# EDGAR Filing Document

**Accession Number:** 0001330967
**File Stem:** 0001145549-25-041471
**Filing Date:** 2025-6
**Character Count:** 1685936
**Document Hash:** 999b7194a84ad4132e0ed15049b6d324
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-25-041471.hdr.sgml**: 20250625

**ACCESSION NUMBER**: 0001145549-25-041471

**CONFORMED SUBMISSION TYPE**: N-CSR

**PUBLIC DOCUMENT COUNT**: 206

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250625

**DATE AS OF CHANGE**: 20250625

**EFFECTIVENESS DATE**: 20250625

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST XII
- **CENTRAL INDEX KEY:** 0001330967

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** N-CSR
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-21780
- **FILM NUMBER:** 251071669

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS Series Trust XII
- **DATE OF NAME CHANGE:** 20050622

## Series and Classes Contracts Data

### MFS Lifetime Income Fund (Series ID: S000002501)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006793 | A            | MLLAX           |
| C000006794 | B            | MLLBX           |
| C000006795 | C            | MLLCX           |
| C000006796 | I            | MLLIX           |
| C000006797 | R1           | MLLEX           |
| C000006799 | R2           | MLLGX           |
| C000006800 | R3           | MLLHX           |
| C000006801 | R4           | MLLJX           |
| C000173225 | R6           | MLLKX           |

### MFS Lifetime 2030 Fund (Series ID: S000002504)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006820 | A            | MLTAX           |
| C000006821 | B            | MLTBX           |
| C000006822 | C            | MLTCX           |
| C000006823 | I            | MLTIX           |
| C000006824 | R1           | MLTEX           |
| C000006826 | R2           | MLTGX           |
| C000006827 | R3           | MLTHX           |
| C000006828 | R4           | MLTJX           |
| C000173227 | R6           | MLTKX           |

### MFS Lifetime 2040 Fund (Series ID: S000002505)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006829 | A            | MLFAX           |
| C000006830 | B            | MLFBX           |
| C000006831 | C            | MLFCX           |
| C000006832 | I            | MLFIX           |
| C000006833 | R1           | MLFEX           |
| C000006835 | R2           | MLFGX           |
| C000006836 | R3           | MLFHX           |
| C000006837 | R4           | MLFJX           |
| C000173228 | R6           | MLFKX           |

### MFS Lifetime 2050 Fund (Series ID: S000030062)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000092196 | A            | MFFSX           |
| C000092197 | B            | MFFRX           |
| C000092198 | C            | MFFDX           |
| C000092199 | I            | MFFIX           |
| C000092200 | R1           | MFFMX           |
| C000092201 | R2           | MFFNX           |
| C000092202 | R3           | MFFOX           |
| C000092203 | R4           | MFFPX           |
| C000173229 | R6           | MFFKX           |

### MFS Lifetime 2025 Fund (Series ID: S000038773)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000119423 | B            | LTTBX           |
| C000119424 | C            | LTTCX           |
| C000119425 | I            | LTTIX           |
| C000119426 | R1           | LTTRX           |
| C000119427 | R2           | LTTSX           |
| C000119428 | R3           | LTTTX           |
| C000119429 | R4           | LTTUX           |
| C000119430 | A            | LTTAX           |
| C000173230 | R6           | LTTKX           |

### MFS Lifetime 2035 Fund (Series ID: S000038774)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000119431 | A            | LFEAX           |
| C000119432 | B            | LFEBX           |
| C000119433 | C            | LFECX           |
| C000119434 | I            | LFEDX           |
| C000119435 | R1           | LFERX           |
| C000119436 | R2           | LFESX           |
| C000119437 | R3           | LFETX           |
| C000119438 | R4           | LFEUX           |
| C000173231 | R6           | LFEKX           |

### MFS Lifetime 2045 Fund (Series ID: S000038775)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000119439 | A            | LTMAX           |
| C000119440 | B            | LTMBX           |
| C000119441 | C            | LTMDX           |
| C000119442 | I            | LTMKX           |
| C000119443 | R1           | LTMRX           |
| C000119444 | R2           | LTMSX           |
| C000119445 | R3           | LTMTX           |
| C000119446 | R4           | LTMUX           |
| C000173232 | R6           | LTMLX           |

### MFS Lifetime 2055 Fund (Series ID: S000038776)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000119447 | A            | LFIAX           |
| C000119448 | B            | LFIBX           |
| C000119449 | C            | LFICX           |
| C000119450 | I            | LFIIX           |
| C000119451 | R1           | LFIRX           |
| C000119452 | R2           | LFISX           |
| C000119453 | R3           | LFITX           |
| C000119454 | R4           | LFIUX           |
| C000173233 | R6           | LFIKX           |

### MFS Lifetime 2060 Fund (Series ID: S000055287)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000173915 | A            | MFJAX           |
| C000173916 | B            | MFJBX           |
| C000173917 | C            | MFJCX           |
| C000173918 | I            | MFJIX           |
| C000173919 | R1           | MFJEX           |
| C000173920 | R2           | MFJGX           |
| C000173921 | R3           | MFJTX           |
| C000173922 | R4           | MFJUX           |
| C000173923 | R6           | MFJKX           |

### MFS Lifetime 2065 Fund (Series ID: S000072833)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000229436 | R3           | LFTLX           |
| C000229437 | R2           | LFTKX           |
| C000229438 | R1           | LFTJX           |
| C000229439 | R4           | LFTMX           |
| C000229440 | C            | LFTGX           |
| C000229441 | A            | LFTFX           |
| C000229442 | R6           | LFTNX           |
| C000229443 | I            | LFTHX           |

### MFS Core Bond Fund (Series ID: S000076470)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000236386 | R4           | MCBKX           |
| C000236387 | R6           | MCBMX           |
| C000236388 | R3           | MCBJX           |
| C000236389 | A            | MCBEX           |
| C000236390 | R1           | MCBGX           |
| C000236391 | I            | MCBFX           |
| C000236392 | C            | MCBCX           |
| C000236393 | R2           | MCBHX           |

?xml version='1.0' encoding='ASCII'? 8ddb0311a759ed8

#### UNITED STATES

#### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

------

#### FORM N-CSR

------

#### CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

#### Investment Company Act file number

#### 811-02178

#### MFS SERIES TRUST XII
(Exact name of registrant as specified in charter)

------

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

#### Registrant's telephone number, including area code:
&nbsp;&nbsp;&nbsp;&nbsp;(617) 954-5000

#### Date of fiscal year end:

#### April 30

#### Date of reporting period:

#### April 30, 2025

#### ITEM 1. REPORTS TO STOCKHOLDERS.
Item 1(a):

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-LTTAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 7.92%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2032808.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 7.92% | 5.62% | 5.05% |
| A with initial sales charge (5.75%) | 1.71% | 4.38% | 4.43% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032804.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-LTTBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 7.06%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032660.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.06% | 4.82% | 4.25% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.06% | 4.49% | 4.25% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032664.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-LTTCX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 7.06%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032621.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.06% | 4.83% | 4.25% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.06% | 4.83% | 4.25% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032617.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-LTTIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 8.12%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032472.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.12% | 5.88% | 5.29% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032476.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-LTTRX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 7.06%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032433.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.06% | 4.82% | 4.24% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032429.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-LTTSX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 7.54%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032271.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 7.54% | 5.35% | 4.76% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032289.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-LTTTX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 7.83%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032245.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 7.83% | 5.61% | 5.03% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032240.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-LTTUX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 8.15%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032096.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.15% | 5.89% | 5.30% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.08% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032100.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2025 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-LTTKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 8.32%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 9.34%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2032056.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 8.32% | 6.02% | 5.81% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2025 Fund Blended Index ∆ | 9.34% | 4.85% | 5.45% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2025 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 69.90% |
| Standard & Poor's 500 Stock Index | 20.80% |
| MSCI EAFE Index (net div) | 5.30% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 350258900 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2032052.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 19.0% |
| MFS Total Return Bond Fund | 19.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS Blended Research International Equity Fund | 2.7% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS High Income Fund | 2.2% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Commodity Strategy Fund | 1.9% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.7% |
| MFS Research Fund | 1.7% |
| MFS Blended Research Core Equity Fund | 1.7% |
| MFS Mid Cap Growth Fund | 1.6% |
| MFS Research International Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.6% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Emerging Markets Debt Fund | 1.1% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.6% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L25R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MLTAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $25 | 0.24% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 8.27%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2031908.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.27% | 7.67% | 6.30% |
| A with initial sales charge (5.75%) | 2.04% | 6.40% | 5.67% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031912.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MLTBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $103 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 7.47%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031867.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.47% | 6.86% | 5.50% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.47% | 6.55% | 5.50% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031864.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MLTCX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $103 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 7.44%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031721.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.44% | 6.86% | 5.50% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.44% | 6.86% | 5.50% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031724.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MLTIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 8.52%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031680.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.52% | 7.93% | 6.54% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031676.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MLTEX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $103 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 7.40%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031533.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.40% | 6.85% | 5.50% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031537.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MLTGX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $51 | 0.49% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 7.99%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031491.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 7.99% | 7.40% | 6.03% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031488.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MLTHX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $25 | 0.24% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 8.21%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031345.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.21% | 7.65% | 6.29% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031349.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MLTJX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 8.51%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031303.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.51% | 7.94% | 6.56% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 6.50% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031300.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2030 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MLTKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 8.68%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 9.94%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2031157.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 8.68% | 8.09% | 7.29% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2030 Fund Blended Index ∆ | 9.94% | 7.50% | 7.20% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2030 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 58.00% |
| Standard & Poor's 500 Stock Index | 29.30% |
| MSCI EAFE Index (net div) | 8.50% |
| Bloomberg Commodity Index | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.10% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 741657983 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 9 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031160.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.0% |
| MFS Inflation-Adjusted Bond Fund | 9.8% |
| MFS Government Securities Fund | 9.6% |
| MFS Limited Maturity Fund | 9.1% |
| MFS Global Opportunistic Bond Fund | 6.9% |
| MFS Blended Research International Equity Fund | 4.2% |
| MFS Blended Research Mid Cap Equity Fund | 4.2% |
| MFS High Income Fund | 4.0% |
| MFS Value Fund | 3.1% |
| MFS Blended Research Value Equity Fund | 3.1% |
| MFS Blended Research Core Equity Fund | 2.7% |
| MFS Research Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Blended Research Growth Equity Fund | 2.6% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Mid Cap Growth Fund | 2.1% |
| MFS Research International Fund | 2.1% |
| MFS Mid Cap Value Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Emerging Markets Debt Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS International Intrinsic Value Fund | 1.1% |
| MFS International Growth Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |
| MFS International New Discovery Fund | 0.1% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML3R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-LFEAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 8.65%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2031115.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.65% | 10.02% | 7.41% |
| A with initial sales charge (5.75%) | 2.40% | 8.73% | 6.78% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2031112.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-LFEBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 7.85%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030969.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.85% | 9.20% | 6.61% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.85% | 8.91% | 6.61% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030972.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-LFECX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 7.87%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030927.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.87% | 9.19% | 6.61% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.87% | 9.19% | 6.61% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030924.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-LFEDX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 8.88%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030781.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.88% | 10.30% | 7.65% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030784.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-LFERX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 7.85%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030739.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.85% | 9.17% | 6.59% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030736.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-LFESX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 8.42%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030593.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 8.42% | 9.75% | 7.15% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030597.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-LFETX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 8.65%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030552.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.65% | 10.02% | 7.41% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030548.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-LFEUX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 8.97%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030405.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.97% | 10.30% | 7.68% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 7.79% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030408.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2035 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-LFEKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 9.09%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 10.71%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030364.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 9.09% | 10.47% | 8.60% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2035 Fund Blended Index ∆ | 10.71% | 10.38% | 8.77% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2035 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 42.10% |
| Bloomberg U.S. Aggregate Bond Index | 38.00% |
| MSCI EAFE Index (net div) | 13.70% |
| Bloomberg Commodity Index | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.10% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 604265833 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 29 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030360.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 8.2% |
| MFS Total Return Bond Fund | 7.6% |
| MFS Blended Research Mid Cap Equity Fund | 7.4% |
| MFS Blended Research International Equity Fund | 6.6% |
| MFS Inflation-Adjusted Bond Fund | 6.5% |
| MFS Global Opportunistic Bond Fund | 4.6% |
| MFS Blended Research Value Equity Fund | 4.2% |
| MFS Value Fund | 4.1% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS High Income Fund | 3.8% |
| MFS Blended Research Core Equity Fund | 3.8% |
| MFS Research Fund | 3.8% |
| MFS Mid Cap Growth Fund | 3.8% |
| MFS Mid Cap Value Fund | 3.6% |
| MFS Global Real Estate Fund | 3.2% |
| MFS Research International Fund | 3.2% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Institutional Money Market Portfolio | 2.2% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS International Intrinsic Value Fund | 1.7% |
| MFS International Growth Fund | 1.7% |
| MFS Blended Research Small Cap Equity Fund | 1.6% |
| MFS International New Discovery Fund | 1.1% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.8% |
| MFS Emerging Markets Equity Fund | 0.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L35R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MLFAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 8.63%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2030217.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.63% | 10.99% | 7.92% |
| A with initial sales charge (5.75%) | 2.39% | 9.69% | 7.28% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030220.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MLFBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 7.80%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030175.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.80% | 10.16% | 7.11% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.80% | 9.88% | 7.11% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030172.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MLFCX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 7.80%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2030029.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.80% | 10.16% | 7.11% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.80% | 10.16% | 7.11% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2030030.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MLFIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 8.88%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029988.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.88% | 11.25% | 8.16% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029984.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MLFEX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 7.82%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029841.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.82% | 10.15% | 7.10% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029844.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MLFGX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 8.40%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029799.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 8.40% | 10.70% | 7.65% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029796.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MLFHX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 8.61%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029653.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.61% | 10.97% | 7.91% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029654.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MLFJX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 8.90%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029612.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.90% | 11.26% | 8.19% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 8.43% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029608.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2040 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MLFKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 9.08%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 11.32%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029465.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 9.08% | 11.42% | 9.20% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2040 Fund Blended Index ∆ | 11.32% | 11.87% | 9.59% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2040 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 52.25% |
| MSCI EAFE Index (net div) | 20.40% |
| Bloomberg U.S. Aggregate Bond Index | 19.25% |
| Bloomberg Commodity Index | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.05% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 765277099 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029468.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 9.2% |
| MFS Blended Research International Equity Fund | 8.9% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 5.0% |
| MFS Blended Research Growth Equity Fund | 4.8% |
| MFS Growth Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.6% |
| MFS Inflation-Adjusted Bond Fund | 4.6% |
| MFS Mid Cap Value Fund | 4.5% |
| MFS Global Real Estate Fund | 4.1% |
| MFS Commodity Strategy Fund | 3.9% |
| MFS High Income Fund | 3.6% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 2.7% |
| MFS Global Opportunistic Bond Fund | 2.7% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.6% |
| MFS Total Return Bond Fund | 2.3% |
| MFS International New Discovery Fund | 2.1% |
| MFS Blended Research Small Cap Equity Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.6% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML4R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-LTMAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 8.65%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2029423.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.65% | 11.57% | 8.15% |
| A with initial sales charge (5.75%) | 2.40% | 10.25% | 7.51% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029420.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-LTMBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 7.86%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029277.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.86% | 10.72% | 7.34% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.86% | 10.45% | 7.34% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029280.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-LTMDX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 7.87%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029236.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.87% | 10.73% | 7.34% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.87% | 10.73% | 7.34% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029232.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-LTMKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 8.96%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029089.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.96% | 11.85% | 8.43% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029092.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-LTMRX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 7.91%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2029048.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.91% | 10.73% | 7.33% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2029044.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-LTMSX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 8.39%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028900.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 8.39% | 11.28% | 7.87% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028904.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-LTMTX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 8.68%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028860.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.68% | 11.56% | 8.15% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028856.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-LTMUX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 8.98%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028701.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.98% | 11.84% | 8.42% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 8.82% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028716.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-LTMLX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 9.11%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 11.61%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028672.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 9.11% | 12.01% | 9.47% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2045 Fund Blended Index ∆ | 11.61% | 12.88% | 10.04% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2045 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 54.75% |
| MSCI EAFE Index (net div) | 24.40% |
| Bloomberg U.S. Aggregate Bond Index | 11.75% |
| Bloomberg Commodity Index | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.55% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 515985480 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 28 | Portfolio Turnover Rate (%): | 14 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028668.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.6% |
| MFS Blended Research Value Equity Fund | 5.2% |
| MFS Value Fund | 5.2% |
| MFS Blended Research Growth Equity Fund | 5.0% |
| MFS Growth Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.6% |
| MFS Global Real Estate Fund | 4.6% |
| MFS Commodity Strategy Fund | 4.3% |
| MFS Research International Fund | 3.9% |
| MFS Inflation-Adjusted Bond Fund | 3.4% |
| MFS International New Discovery Fund | 3.1% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS Blended Research Small Cap Equity Fund | 2.3% |
| MFS Total Return Bond Fund | 2.1% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS High Income Fund | 1.7% |
| MFS Emerging Markets Debt Fund | 1.3% |
| MFS Global Opportunistic Bond Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 0.9% |
| MFS Emerging Markets Equity Fund | 0.8% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L45R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MFFSX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 8.72%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2028512.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.72% | 11.65% | 8.19% |
| A with initial sales charge (5.75%) | 2.47% | 10.34% | 7.55% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028528.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MFFRX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 7.88%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028484.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.88% | 10.81% | 7.38% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.88% | 10.54% | 7.38% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028480.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MFFDX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 7.88%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028324.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.88% | 10.82% | 7.38% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.88% | 10.82% | 7.38% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028341.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MFFIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 9.03%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028296.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 9.03% | 11.93% | 8.47% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028292.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MFFMX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 7.88%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028148.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.88% | 10.82% | 7.38% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028150.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MFFNX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 8.46%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2028108.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 8.46% | 11.36% | 7.92% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2028104.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MFFOX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 8.74%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027960.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.74% | 11.66% | 8.19% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027962.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MFFPX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 8.98%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027920.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.98% | 11.92% | 8.45% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027916.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MFFKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 9.20%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027773.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 9.20% | 12.10% | 9.52% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2050 Fund Blended Index ∆ | 11.84% | 13.13% | 10.18% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2050 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 556731866 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 13 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027776.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML5R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-LFIAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 8.72%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2027732.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.72% | 11.65% | 8.19% |
| A with initial sales charge (5.75%) | 2.47% | 10.34% | 7.55% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027728.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-LFIBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 7.92%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027585.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.92% | 10.82% | 7.38% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.92% | 10.55% | 7.38% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027588.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-LFICX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 7.87%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027544.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.87% | 10.81% | 7.38% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.87% | 10.81% | 7.38% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027540.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-LFIIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 8.93%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027396.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.93% | 11.91% | 8.41% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027398.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-LFIRX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 7.87%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027356.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.87% | 10.83% | 7.38% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027352.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-LFISX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 8.43%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027209.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 8.43% | 11.38% | 7.92% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027212.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-LFITX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 8.71%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027168.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.71% | 11.64% | 8.18% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027164.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-LFIUX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 8.97%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2027021.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.97% | 11.93% | 8.46% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 12.32% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 8.94% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2027024.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-LFIKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 9.11%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026980.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 9.11% | 12.10% | 9.52% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.43% |
| MFS Lifetime 2055 Fund Blended Index ∆ | 11.84% | 13.13% | 10.18% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2055 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 381971962 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 15 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026976.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Value Fund | 5.4% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Mid Cap Growth Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.8% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.4% |
| MFS Total Return Bond Fund | 1.9% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L55R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MFJAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.61%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2026041.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| A without sales charge | 8.61% | 11.63% | 9.43% |
| A with initial sales charge (5.75%) | 2.37% | 10.31% | 8.66% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026036.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MFJBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

For the period from May 1, 2024 through April 30, 2025, the distribution fee was not imposed. Had the distribution fee been imposed throughout the entire period, the "Costs of a $10,000 investment" and the "Costs paid as a percentage of a $10,000 investment" would have been approximately $104 and 1.00%, respectively.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.62%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025892.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| B without sales charge | 8.62% | 10.95% | 8.72% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 4.62% | 10.68% | 8.72% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025896.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6B-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MFJCX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $104 | 1.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 7.79%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025853.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| C without sales charge | 7.79% | 10.80% | 8.63% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.79% | 10.80% | 8.63% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025848.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MFJIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.92%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025703.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| I without sales charge | 8.92% | 11.91% | 9.72% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025707.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MFJEX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

For the period from May 1, 2024 through April 30, 2025, the distribution fee was not imposed. Had the distribution fee been imposed throughout the entire period, the "Costs of a $10,000 investment" and the "Costs paid as a percentage of a $10,000 investment" would have been approximately $104 and 1.00%, respectively.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.61%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025664.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R1 without sales charge | 8.61% | 11.22% | 8.88% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025660.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MFJGX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $52 | 0.50% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.32%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025515.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R2 without sales charge | 8.32% | 11.34% | 9.17% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025520.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MFJTX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $26 | 0.25% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.64%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025477.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R3 without sales charge | 8.64% | 11.63% | 9.44% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025473.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MFJUX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 8.91%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025325.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R4 without sales charge | 8.91% | 11.88% | 9.70% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025332.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MFJKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 9.05%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025288.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 9.05% | 12.07% | 9.85% |
| **Comparative Benchmark(s)** |  |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 15.61% | 13.59% |
| MFS Lifetime 2060 Fund Blended Index ∆ | 11.84% | 13.13% | 10.54% |

---

\* For the period from the commencement of the class's investment operations, December 6, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2060 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 217953647 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 18 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025284.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.2% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Commodity Strategy Fund | 4.9% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS International New Discovery Fund | 4.1% |
| MFS Research International Fund | 4.0% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS Total Return Bond Fund | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

ML6R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-LFTFX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $25 | 0.24% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 8.67%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2025127.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| A without sales charge | 8.67% | 3.31% |
| A with initial sales charge (5.75%) | 2.42% | 1.66% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025144.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65A-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-LFTGX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $103 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 7.77%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2025100.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| C without sales charge | 7.77% | 2.55% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.77% | 2.55% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2025096.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65C-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-LFTHX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 8.86%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2024950.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| I without sales charge | 8.86% | 3.58% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2024956.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65I-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-LFTJX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $102 | 0.98% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 7.84%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2024912.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R1 without sales charge | 7.84% | 2.55% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2024908.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65R1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-LFTKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $51 | 0.49% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 8.30%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2024764.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R2 without sales charge | 8.30% | 3.07% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2024768.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65R2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-LFTLX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $25 | 0.24% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 8.69%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2024724.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R3 without sales charge | 8.69% | 3.33% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2024720.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65R3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-LFTMX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 8.84%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2024576.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R4 without sales charge | 8.84% | 3.55% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2024580.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65R4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-LFTNX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime 2065 Fund (fund) provided a total return of 9.06%, at net asset value. This compares with a return of 12.10% for the fund's benchmark, the Standard & Poor's 500 Stock Index. The fund's other benchmark, the MFS Lifetime 2065 Fund Blended Index (Blended Index), generated a return of 11.84%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

The non-traditional segment was a modest detractor due to the MFS Global Real Estate Fund underperforming its respective benchmark.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2024536.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R6 without sales charge | 9.06% | 3.66% |
| **Comparative Benchmark(s)** |  |  |
| Standard & Poor's 500 Stock Index ∆ | 12.10% | 7.45% |
| MFS Lifetime 2065 Fund Blended Index ∆ | 11.84% | 5.70% |

---

\* For the period from the commencement of the class's investment operations, September 1, 2021 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime 2065 Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Standard & Poor's 500 Stock Index | 57.00% |
| MSCI EAFE Index (net div) | 28.00% |
| Bloomberg Commodity Index | 5.00% |
| Bloomberg U.S. Aggregate Bond Index | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32707030 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 24 | Portfolio Turnover Rate (%): | 22 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2024531.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.0% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 5.5% |
| MFS Blended Research Value Equity Fund | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 2.0% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.3% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

L65R6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MLLAX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| A | $25 | 0.24% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Lifetime Income Fund (fund) provided a total return of 7.78%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2026832.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 7.78% | 4.57% | 4.02% |
| A with initial sales charge (4.25%) | 3.20% | 3.67% | 3.57% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026836.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTA-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MLLBX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| B | $102 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Lifetime Income Fund (fund) provided a total return of 6.98%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026792.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 6.98% | 3.79% | 3.25% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 2.98% | 3.45% | 3.25% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026790.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTB-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MLLCX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| C | $102 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Lifetime Income Fund (fund) provided a total return of 6.89%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks.

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026643.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 6.89% | 3.79% | 3.24% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 5.89% | 3.79% | 3.24% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

*#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026648.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTC-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MLLIX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| I | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Lifetime Income Fund (fund) provided a total return of 7.95%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026604.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 7.95% | 4.83% | 4.28% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026601.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTI-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MLLEX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R1 | $102 | 0.99% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Lifetime Income Fund (fund) provided a total return of 6.97%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026456.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 6.97% | 3.81% | 3.26% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026460.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTR1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MLLGX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R2 | $51 | 0.49% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Lifetime Income Fund (fund) provided a total return of 7.51%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026416.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 7.51% | 4.31% | 3.76% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026414.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTR2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MLLHX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R3 | $25 | 0.24% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Lifetime Income Fund (fund) provided a total return of 7.78%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026268.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 7.78% | 4.57% | 4.02% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

# The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026272.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTR3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MLLJX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R4 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Lifetime Income Fund (fund) provided a total return of 7.96%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026228.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 7.96% | 4.81% | 4.27% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.07% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026225.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTR4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> Income Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MLLKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment ~ | Costs paid as a percentage of a $10,000 investment ~ |
| R6 | $0 | 0.00% |

---

˜ Expenses are direct expenses and do not include underlying fund fees and expenses.

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Lifetime Income Fund (fund) provided a total return of 8.15%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 9.16%. The Blended Index reflects the blended returns of broad asset class indices, with percentage allocations to each index designed to resemble the long term strategic allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Fund Performance. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Blended Index:

The international stock funds segment contributed to the fund's relative performance, with both the MFS Blended Research International Equity Fund and MFS International Growth Fund outpacing their respective benchmarks. 

* Top detractors from performance relative to the Blended Index:

The US equity funds segment was a primary detractor from relative performance. Within this segment, manager selection was a headwind as all funds underperformed their respective benchmarks. Style selection also held back relative performance. Allocations to all strategies, with the exception of large and mid-cap growth funds, held back relative returns as large-cap and growth strategies tended to outperform small-cap and value-oriented strategies. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2026080.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 8.15% | 4.95% | 4.64% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.23% |
| MFS Lifetime Income Fund Blended Index ∆ | 9.16% | 3.59% | 4.17% |

---

\* For the period from the commencement of the class's investment operations, August 29, 2016 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

The MFS Lifetime Income Fund Blended Index (a custom index) was comprised of the following at the end of the reporting period:

---

| | |
|:---|:---|
|  | **4/30/25** |
| Bloomberg U.S. Aggregate Bond Index | 71.00% |
| Standard & Poor's 500 Stock Index | 20.00% |
| MSCI EAFE Index (net div) | 5.00% |
| Bloomberg Commodity Index | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% |

---

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 551511369 | Total Management Fee ($)#: | 0 |
| Total Number of Holdings: | 27 | Portfolio Turnover Rate (%): | 5 |

---

 *#* The fund itself does not pay a management fee but the underlying funds in which the fund invests do pay management fees to MFS.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2026084.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.0% |
| MFS Total Return Bond Fund | 19.5% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.5% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Institutional Money Market Portfolio | 2.5% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Growth Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS New Discovery Value Fund | 0.5% |

---

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

LRTR6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MCBEX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| A | $63 | 0.61% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Core Bond Fund (fund) provided a total return of 7.80%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. 

Yield curve positioning also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2024375.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| A without sales charge | 7.80% | 2.92% |
| A with initial sales charge (4.25%) | 3.22% | 1.37% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBA-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MCBCX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| C | $141 | 1.36% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Core Bond Fund (fund) provided a total return of 7.01%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance.

Yield curve positioning also benefited relative returns.

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2024348.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| C without sales charge | 7.01% | 2.16% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.01% | 2.16% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBC-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MCBFX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| I | $37 | 0.36% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Core Bond Fund (fund) provided a total return of 8.17%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. 

Yield curve positioning also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2024200.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| I without sales charge | 8.17% | 3.21% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBI-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MCBGX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R1 | $141 | 1.36% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Core Bond Fund (fund) provided a total return of 6.99%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. 

Yield curve positioning also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2024159.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R1 without sales charge | 6.99% | 2.15% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBR1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MCBHX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R2 | $89 | 0.86% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Core Bond Fund (fund) provided a total return of 7.41%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. 

Yield curve positioning also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2024012.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R2 without sales charge | 7.41% | 2.66% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBR2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MCBJX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R3 | $64 | 0.62% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Core Bond Fund (fund) provided a total return of 7.68%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. 

Yield curve positioning also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2023972.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R3 without sales charge | 7.68% | 2.92% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBR3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MCBKX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R4 | $38 | 0.37% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Core Bond Fund (fund) provided a total return of 8.06%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook. 

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment. 

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. 

Yield curve positioning also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2023823.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R4 without sales charge | 8.06% | 3.21% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBR4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MCBMX

Annual Shareholder Report

This annual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2024 to April 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R6 | $34 | 0.33% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Core Bond Fund (fund) provided a total return of 8.10%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index.

* Global equity markets reached record levels during the period as they withstood the adversity of the unsettled geopolitical climate and a higher interest rate environment but fell back from those highs as policy uncertainty rose. Healthy earnings growth continued, although advances in artificial intelligence called into question, at least temporarily, the need for extraordinary levels of infrastructure investment to support the technology. In Europe, renewed focus on defense and infrastructure spending brightened the outlook.

* Market volatility rose toward the end of the period as the Trump administration imposed, then suspended for 90-days, an array of very high tariffs on most US trading partners. The US left in place very high tariffs on Chinese imports, as well as a 10% baseline tariff and sectoral tariffs on imports of some goods such as steel, aluminum and autos.

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. However, the pace of disinflation slowed toward the end of the period, particularly in the US, while tariffs made for a more difficult policymaking environment.

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance.

Yield curve positioning also benefited relative returns.

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Security selection within the mortgage-backed security (MBS) sector held back relative performance.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment\*

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2023784.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | |
|:---|:---|:---|
| **Share Class** | **1-yr** | **Life\*** |
| R6 without sales charge | 8.10% | 3.24% |
| **Comparative Benchmark(s)** |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | 2.97% |

---

\* For the period from the commencement of the class's investment operations, June 22, 2022 through April 30, 2025. <br> ∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end. Returns less than one year are cumulative, not annualized.

Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 32089299 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 295 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 95927 |  |  |
| Portfolio Turnover Rate (%): | 139 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 4/30/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 96.1% |
| Money Market Funds | 3.9% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 9.6% |
| AA | 5.3% |
| A | 13.0% |
| BBB | 17.5% |
| U.S. Government | 26.3% |
| Federal Agencies | 24.4% |
| Money Market Funds | 3.9% |

---

Ratings are assigned using Moody's, Fitch, and Standard & Poor's and applying a hierarchy: If all 3 agencies rate a security, the middle rating is assigned; if 2 agencies rate a security, the lower rating is assigned. If none of the 3 agencies rate a security, we use DBRS Morningstar. If none of the 4 agencies rate a security, we use Kroll Bond Rating Agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

MCBR6-ANN

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Item 1(b):
Not applicable.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 2. CODE OF ETHICS.
The Registrant has adopted a Code of Ethics (the "Code") pursuant to Section 406 of the Sarbanes-Oxley Act and as defined in Form N-CSR that applies to the Registrant's principal executive officer and principal financial and accounting officer. During the period covered by this report, the Registrant has not amended any provision in the Code that relates to an element of the Code's definition enumerated in paragraph (b) of Item 2 of this Form N-CSR. During the period covered by this report, the Registrant did not grant a waiver, including an implicit waiver, from any provision of the Code. A copy of the Code is attached hereto as EX-99.COE.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.
Messrs. Steven E. Buller, Clarence Otis, Jr., and Darrell A. Williams, members of the Audit Committee, have been determined by the Board of Trustees in their reasonable business judgment to meet the definition of "audit committee financial expert" as such term is defined in Form N-CSR. In addition, Messrs. Buller, Otis, and Williams are "independent" members of the Audit Committee (as such term has been defined by the Securities and Exchange Commission in regulations implementing Section 407 of the Sarbanes-Oxley Act of 2002). The Securities and Exchange Commission has stated that the designation of a person as an audit committee financial expert pursuant to this Item 3 on the Form N-CSR does not impose on such a person any duties, obligations or liability that are greater than the duties, obligations or liability imposed on such person as a member of the Audit Committee and the Board of Trustees in the absence of such designation or identification.

------

**ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.**

**Items 4(a) through 4(d) and 4(g):**

The Board of Trustees has appointed Ernst & Young LLP ("E&Y") to serve as independent accountant to a series of the Registrant (each a "Fund" and collectively the "Funds"). The tables below set forth the audit fees billed to each Fund as well as fees for non-audit services provided to each Fund and/or to the Fund's investment adviser, Massachusetts Financial Services Company ("MFS") and to various entities either controlling, controlled by, or under common control with MFS that provide ongoing services to the Fund ("MFS Related Entities").

For the fiscal years ended April 30, 2025 and 2024, audit fees billed to each Fund by E&Y were as follows:

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Fees billed by E&Y:** |  | &nbsp;&nbsp;&nbsp;**Audit Fees** |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2025** | **2024** |
| &nbsp;&nbsp;MFS Core Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64400 | 47300 |
| &nbsp;&nbsp;MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39918 | 37244 |
| &nbsp;&nbsp;MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38738 | 36091 |
| &nbsp;&nbsp;MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39582 | 36915 |
| &nbsp;&nbsp;MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38738 | 36091 |
| &nbsp;&nbsp;MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39582 | 36915 |
| &nbsp;&nbsp;MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38738 | 36091 |
| &nbsp;&nbsp;MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38873 | 36223 |
| &nbsp;&nbsp;MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38738 | 36091 |
| &nbsp;&nbsp;MFS Lifetime 2060 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37927 | 35299 |
| &nbsp;&nbsp;MFS Lifetime 2065 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32096 | 29800 |
| &nbsp;&nbsp;**Total** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**447330** | **404060** |

---

For the fiscal years ended April 30, 2025 and 2024, fees billed by E&Y for audit-related, tax and other services provided to each Fund and for audit-related, tax and other services provided to MFS and MFS Related Entities were as follows:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | &nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** |
| &nbsp;&nbsp;**Fees billed by E&Y:**<br>| &nbsp;&nbsp;**2025** | **2024** | **2025** | **2024** | **2025** | **2024** |
| &nbsp;&nbsp;To MFS Core Bond Fund | &nbsp;&nbsp;0 | 0 | 259 | 267 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime Income Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2025 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2030 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2035 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2040 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2045 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2050 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2055 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2060 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Lifetime 2065 Fund | &nbsp;&nbsp;0 | 0 | 0 | 0 | 0 | 0 |
| &nbsp;&nbsp;**Total fees billed by E&Y** | &nbsp;&nbsp;**0** | **0** | **259** | **267** | **0** | **0** |
| &nbsp;&nbsp;**To above Funds:** |  |  |  |  |  |  |
| &nbsp;&nbsp;**Fees billed by E&Y:** | **Audit-Related Fees<sup>1</sup>** | **Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** |
|  | **2025** | **2024** | **2025** | **2024** | **2025** | **2024** |
| &nbsp;&nbsp;To MFS and MFS Related |  |  |  |  |  |  |
| &nbsp;&nbsp;Entities of MFS Core Bond | 0 | 0 | 0 | 0 | 3600 | 3600 |
| &nbsp;&nbsp;Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS and MFS Related |  |  |  |  |  |  |
| &nbsp;&nbsp;Entities of MFS Lifetime | 0 | 0 | 0 | 0 | 3600 | 3600 |
| &nbsp;&nbsp;Income Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS and MFS Related |  |  |  |  |  |  |
| &nbsp;&nbsp;Entities of MFS Lifetime | 0 | 0 | 0 | 0 | 3600 | 3600 |
| &nbsp;&nbsp;2025 Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS and MFS Related |  |  |  |  |  |  |
| &nbsp;&nbsp;Entities of MFS Lifetime | 0 | 0 | 0 | 0 | 3600 | 3600 |
| &nbsp;&nbsp;2030 Fund<sup>\*</sup> |  |  |  |  |  |  |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2035 Fund<sup>\*</sup> |  |  |  |  |
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2040 Fund<sup>\*</sup> |  |  |  |  |
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2045 Fund<sup>\*</sup> |  |  |  |  |
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2050 Fund<sup>\*</sup> |  |  |  |  |
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2055 Fund<sup>\*</sup> |  |  |  |  |
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2060 Fund<sup>\*</sup> |  |  |  |  |
| To MFS and MFS Related |  |  |  |  |
| Entities of MFS Lifetime | 0 | 0 | &nbsp;&nbsp;0 | 3600 |
| 2065 Fund<sup>\*</sup> |  |  |  |  |
| &nbsp;&nbsp;**Fees billed by E&Y:** |  | &nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** | &nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** | &nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** |
|  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2025** |  | **2024<sup>4</sup>** |
| &nbsp;&nbsp;To MFS Core Bond Fund, MFS and MFS | &nbsp;&nbsp;To MFS Core Bond Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277910 |  | 229807 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime Income Fund, |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;MFS and MFS Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2025 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2025 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2030 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2030 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2035 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2035 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2040 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2040 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2045 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2045 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2050 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2050 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2055 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2055 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2060 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2060 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |
| &nbsp;&nbsp;To MFS Lifetime 2065 Fund, MFS and MFS | &nbsp;&nbsp;To MFS Lifetime 2065 Fund, MFS and MFS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;277651 |  | 229540 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |

---

\*This amount reflects the fees billed to MFS and MFS Related Entities for non-audit services relating directly to the operations and financial reporting of the Funds (portions of which services also related to the operations and financial reporting of other funds within the MFS Funds complex).

# This amount reflects the aggregate fees billed by E&Y for non-audit services rendered to the Funds and for non-audit services rendered to MFS and the MFS Related Entities.

<sup>1</sup> The fees included under "Audit-Related Fees" are fees related to assurance and related services that are reasonably related to the performance of the audit or review of financial statements, but not reported under ''Audit Fees,'' including accounting consultations, agreed-upon procedure reports, attestation reports, comfort letters and internal control reviews.

<sup>2</sup> The fees included under "Tax Fees" are fees associated with tax compliance, tax advice and tax planning, including services relating to the filing or amendment of federal, state or local income tax returns, regulated investment company qualification reviews and tax distribution and analysis.

<sup>3</sup> The fees included under "All Other Fees" are fees for products and services provided by E&Y other than those reported under "Audit Fees," "Audit-Related Fees" and "Tax Fees".

**Item 4(e)(1):**

Set forth below are the policies and procedures established by the Audit Committee of the Board of Trustees relating to the pre- approval of audit and non-audit related services:

To the extent required by applicable law, pre-approval by the Audit Committee of the Board is needed for all audit and permissible non-audit services rendered to the Fund and all permissible non-audit services rendered to MFS or MFS Related Entities if the services relate directly to the operations and financial reporting of the Registrant. Pre-approval is currently on an engagement-by-engagement basis. In the event pre-approval of such services is necessary between regular meetings of the Audit Committee and it is not practical to wait to seek pre-approval at the next regular meeting of the Audit Committee, pre-approval of such services may be referred to the Chair of the Audit Committee for approval; provided that the Chair may not pre-approve any individual engagement for such services exceeding $50,000 or multiple engagements for such services in the aggregate exceeding $100,000 in each period between regular meetings of the Audit Committee. Any engagement pre-approved by the Chair between regular meetings of the Audit Committee shall be presented for ratification by the entire Audit Committee at its next regularly scheduled meeting.

**Item 4(e)(2):**

None, or 0%, of the services relating to the Audit-Related Fees, Tax Fees and All Other Fees paid by the Fund and MFS and MFS Related Entities relating directly to the operations and financial reporting of the Registrant disclosed above were approved by the audit committee pursuant to paragraphs (c)(7)(i)(C) of Rule 2-01 of Regulation S-X (which permits audit committee approval after the start of the engagement with respect to services other than audit, review or attest services, if certain conditions are satisfied).

**Item 4(f):**

Not applicable.

**Item 4(h):**

The Registrant's Audit Committee has considered whether the provision by a Registrant's independent registered public accounting firm of non-audit services to MFS and MFS Related Entities that were not pre-approved by the Committee (because such services did not relate directly to the operations and financial reporting of the Registrant) was compatible with maintaining the independence of the independent registered public accounting firm as the Registrant's principal auditors.

**Item 4(i):**

Not applicable.

**Item 4(j):**

Not applicable.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 6. INVESTMENTS
A schedule of investments for each series covered by this Form N-CSR is included in the financial statements of such series under Item 7 of this Form N-CSR.

------

#### ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund, and MFS Lifetime 2065 Fund

### Portfolio of Investments
4/30/25

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

#### MFS Lifetime Income Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 70.0% | Bond Funds – 70.0% | Bond Funds – 70.0% |
| MFS Emerging Markets Debt Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;464008 | $5517060 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;992995 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5521050 |
| MFS Global Opportunistic Bond Fund - Class R6 | &nbsp;&nbsp;4726099 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38612226 |
| MFS Government Securities Fund - Class R6 | &nbsp;&nbsp;6051154 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52402994 |
| MFS High Income Fund - Class R6 | &nbsp;&nbsp;3617335 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11032870 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;5975756 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55156231 |
| MFS Limited Maturity Fund - Class R6 | 18755691 | &nbsp;&nbsp;&nbsp;&nbsp;110283464 |
| MFS Total Return Bond Fund - Class R6 | 11297858 | &nbsp;&nbsp;&nbsp;&nbsp;107555611 |
|  |  | $386081506 |
| International Stock Funds – 5.0% | International Stock Funds – 5.0% | International Stock Funds – 5.0% |
| MFS Blended Research International Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;969638 | $13827039 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61705 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764988 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;69278 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764219 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;344618 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8294957 |
|  |  | $27651203 |
| Non-Traditional Funds – 4.0% | Non-Traditional Funds – 4.0% | Non-Traditional Funds – 4.0% |
| MFS Commodity Strategy Fund - Class R6 | &nbsp;&nbsp;2954849 | $10844294 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;690204 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11050168 |
|  |  | $21894462 |
| U.S. Stock Funds – 18.5% | U.S. Stock Funds – 18.5% | U.S. Stock Funds – 18.5% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;261721 | $8977043 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;391772 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8983337 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | &nbsp;&nbsp;1242523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16562828 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;428780 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5514113 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;726105 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11044059 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8983350 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;274211 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8297620 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;278149 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8274921 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95522 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764392 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;167427 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2745809 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;165802 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8978197 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;226840 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11044812 |
|  |  | $102170481 |
| Money Market Funds – 2.5% | Money Market Funds – 2.5% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 13576203 | $13576203 |
| **Total Mutual Funds (Identified Cost, $490,978,517)** | **Total Mutual Funds (Identified Cost, $490,978,517)** | &nbsp;&nbsp;**$551373855** |
| Other Assets, Less Liabilities – 0.0% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;137514 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$551511369** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
LTFFS-ANN

------

Portfolio of Investments – continued

#### MFS Lifetime 2025 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 68.9% | Bond Funds – 68.9% | Bond Funds – 68.9% |
| MFS Emerging Markets Debt Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;320960 | $3816210 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;697671 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3879050 |
| MFS Global Opportunistic Bond Fund - Class R6 | &nbsp;&nbsp;3004340 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24545457 |
| MFS Government Securities Fund - Class R6 | &nbsp;&nbsp;3844284 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33291501 |
| MFS High Income Fund - Class R6 | &nbsp;&nbsp;2504435 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7638526 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;3790009 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34981787 |
| MFS Limited Maturity Fund - Class R6 | 11317665 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66547868 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;6983080 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66478927 |
|  |  | $241179326 |
| International Stock Funds – 5.4% | International Stock Funds – 5.4% | International Stock Funds – 5.4% |
| MFS Blended Research International Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;659011 | $9397490 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43261 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1938547 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48556 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1937387 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;228069 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5489624 |
|  |  | $18763048 |
| Non-Traditional Funds – 3.9% | Non-Traditional Funds – 3.9% | Non-Traditional Funds – 3.9% |
| MFS Commodity Strategy Fund - Class R6 | &nbsp;&nbsp;1849062 | $6786060 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;441272 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7064758 |
|  |  | $13850818 |
| U.S. Stock Funds – 19.3% | U.S. Stock Funds – 19.3% | U.S. Stock Funds – 19.3% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;176524 | $6054762 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;265777 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6094278 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;816118 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10878858 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;271603 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3492814 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;482394 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7337216 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32391 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6088938 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;181998 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5507248 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;181497 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5399525 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61215 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1771550 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;106062 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1739411 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;111832 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6055708 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;150598 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7332608 |
|  |  | $67752916 |
| Money Market Funds – 2.5% | Money Market Funds – 2.5% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | &nbsp;&nbsp;8694934 | $8694934 |
| **Total Mutual Funds (Identified Cost, $321,203,116)** | **Total Mutual Funds (Identified Cost, $321,203,116)** | &nbsp;&nbsp;**$350241042** |
| Other Assets, Less Liabilities – 0.0% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17858 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$350258900** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*2*

*LTFFS-ANN*

------

Portfolio of Investments – continued

#### MFS Lifetime 2030 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 57.5% | Bond Funds – 57.5% | Bond Funds – 57.5% |
| MFS Emerging Markets Debt Fund - Class R6 | &nbsp;&nbsp;1307633 | $15547753 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | &nbsp;&nbsp;2701126 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15018257 |
| MFS Global Opportunistic Bond Fund - Class R6 | &nbsp;&nbsp;6231214 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;50909020 |
| MFS Government Securities Fund - Class R6 | &nbsp;&nbsp;8189445 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70920596 |
| MFS High Income Fund - Class R6 | &nbsp;&nbsp;9764219 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29780868 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;7865827 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72601583 |
| MFS Limited Maturity Fund - Class R6 | 11526274 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67774490 |
| MFS Total Return Bond Fund - Class R6 | 10935867 | &nbsp;&nbsp;&nbsp;&nbsp;104109454 |
|  |  | $426662021 |
| International Stock Funds – 8.5% | International Stock Funds – 8.5% | International Stock Funds – 8.5% |
| MFS Blended Research International Equity Fund - Class R6 | &nbsp;&nbsp;2198809 | $31355010 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;174497 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7819217 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;196138 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7825905 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21128 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;673560 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;650470 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15656823 |
|  |  | $63330515 |
| Non-Traditional Funds – 4.2% | Non-Traditional Funds – 4.2% | Non-Traditional Funds – 4.2% |
| MFS Commodity Strategy Fund - Class R6 | &nbsp;&nbsp;4156788 | $15255413 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;972521 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15570062 |
|  |  | $30825475 |
| U.S. Stock Funds – 27.3% | U.S. Stock Funds – 27.3% | U.S. Stock Funds – 27.3% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;577606 | $19811876 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;856810 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19646643 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | &nbsp;&nbsp;2342827 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31229887 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;570252 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7333442 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;1502537 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22853587 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;104793 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19699011 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;522394 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15807642 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;524999 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15618719 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;131601 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3808547 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;227257 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3727016 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;365202 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19775705 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;470522 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22909714 |
|  |  | $202221789 |
| Money Market Funds – 2.5% | Money Market Funds – 2.5% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 18882349 | $18882348 |
| **Total Mutual Funds (Identified Cost, $632,850,414)** | **Total Mutual Funds (Identified Cost, $632,850,414)** | &nbsp;&nbsp;**$741922148** |
| Other Assets, Less Liabilities – (0.0)% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(264165) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$741657983** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*LTFFS-ANN*

*3*

------

Portfolio of Investments – continued

#### MFS Lifetime 2035 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 99.9% | Mutual Funds (h) – 99.9% | Mutual Funds (h) – 99.9% |
| Bond Funds – 35.5% | Bond Funds – 35.5% | Bond Funds – 35.5% |
| MFS Emerging Markets Debt Fund - Class R6 | &nbsp;&nbsp;1461602 | $17378446 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | &nbsp;&nbsp;2122567 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11801473 |
| MFS Global Opportunistic Bond Fund - Class R6 | &nbsp;&nbsp;3386880 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27670810 |
| MFS Government Securities Fund - Class R6 | &nbsp;&nbsp;5705502 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49409643 |
| MFS High Income Fund - Class R6 | &nbsp;&nbsp;7622048 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23247248 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;4246121 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39191694 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;4793571 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45634797 |
|  |  | $214334111 |
| International Stock Funds – 14.3% | International Stock Funds – 14.3% | International Stock Funds – 14.3% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20998 | $298592 |
| MFS Blended Research International Equity Fund - Class R6 | &nbsp;&nbsp;2784782 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39710985 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8145 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;298767 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;225678 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10112645 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;254043 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10136332 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;215549 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6871686 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;800660 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19271894 |
|  |  | $86700901 |
| Non-Traditional Funds – 6.2% | Non-Traditional Funds – 6.2% | Non-Traditional Funds – 6.2% |
| MFS Commodity Strategy Fund - Class R6 | &nbsp;&nbsp;4936218 | $18115920 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;1208588 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19349484 |
|  |  | $37465404 |
| U.S. Stock Funds – 41.7% | U.S. Stock Funds – 41.7% | U.S. Stock Funds – 41.7% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;674702 | $23142287 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;1027917 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23570136 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | &nbsp;&nbsp;3345819 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44599773 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;747716 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9615630 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;1644493 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25012738 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;124369 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23378908 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;752671 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22775820 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;738683 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21975804 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;169961 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4918682 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;290044 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4756713 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;425535 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23042731 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;511897 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24924258 |
|  |  | $251713480 |
| Money Market Funds – 2.2% | Money Market Funds – 2.2% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 13350281 | $13350281 |
| **Total Mutual Funds (Identified Cost, $501,143,950)** | **Total Mutual Funds (Identified Cost, $501,143,950)** | &nbsp;&nbsp;**$603564177** |
| Other Assets, Less Liabilities – 0.1% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;701656 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$604265833** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*4*

*LTFFS-ANN*

------

Portfolio of Investments – continued

#### MFS Lifetime 2040 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 17.8% | Bond Funds – 17.8% | Bond Funds – 17.8% |
| MFS Emerging Markets Debt Fund - Class R6 | &nbsp;&nbsp;1744973 | $20747732 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | &nbsp;&nbsp;2539719 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14120835 |
| MFS Global Opportunistic Bond Fund - Class R6 | &nbsp;&nbsp;2521497 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20600633 |
| MFS High Income Fund - Class R6 | &nbsp;&nbsp;9105391 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27771443 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;3812127 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35185933 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;1874192 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17842305 |
|  |  | $136268881 |
| International Stock Funds – 20.9% | International Stock Funds – 20.9% | International Stock Funds – 20.9% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;287778 | $4092204 |
| MFS Blended Research International Equity Fund - Class R6 | &nbsp;&nbsp;4763169 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67922794 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;111617 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4094094 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;446522 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20008634 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;502386 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20045192 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;511808 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16316442 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;1148400 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27641994 |
|  |  | $160121354 |
| Non-Traditional Funds – 8.0% | Non-Traditional Funds – 8.0% | Non-Traditional Funds – 8.0% |
| MFS Commodity Strategy Fund - Class R6 | &nbsp;&nbsp;8105433 | $29746941 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;1966481 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31483361 |
|  |  | $61230302 |
| U.S. Stock Funds – 51.4% | U.S. Stock Funds – 51.4% | U.S. Stock Funds – 51.4% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;1047275 | $35921523 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;1596084 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36598212 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | &nbsp;&nbsp;5259259 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70105928 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;1221002 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15702087 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;2530372 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38486959 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;193483 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36370935 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;1176323 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35595525 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;1165706 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34679752 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;275750 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7980207 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;474923 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7788739 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;661238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35806030 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;788257 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38380213 |
|  |  | $393416110 |
| Money Market Funds – 1.9% | Money Market Funds – 1.9% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 14252012 | $14252012 |
| **Total Mutual Funds (Identified Cost, $567,545,781)** | **Total Mutual Funds (Identified Cost, $567,545,781)** | &nbsp;&nbsp;**$765288659** |
| Other Assets, Less Liabilities – (0.0)% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11560) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$765277099** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*LTFFS-ANN*

*5*

------

Portfolio of Investments – continued

#### MFS Lifetime 2045 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 10.7% | Bond Funds – 10.7% | Bond Funds – 10.7% |
| MFS Emerging Markets Debt Fund - Class R6 | &nbsp;&nbsp;558819 | $6644354 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | &nbsp;&nbsp;809318 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4499811 |
| MFS Global Opportunistic Bond Fund - Class R6 | &nbsp;&nbsp;807706 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6598955 |
| MFS High Income Fund - Class R6 | 2909440 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8873792 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 1912500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17652378 |
| MFS Total Return Bond Fund - Class R6 | 1135567 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10810599 |
|  |  | $55079889 |
| International Stock Funds – 25.0% | International Stock Funds – 25.0% | International Stock Funds – 25.0% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;286004 | $4066972 |
| MFS Blended Research International Equity Fund - Class R6 | 3678426 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52454363 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;110944 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4069438 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;359912 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16127659 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;405334 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16172817 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;508219 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16202014 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;827569 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19919577 |
|  |  | $129012840 |
| Non-Traditional Funds – 8.9% | Non-Traditional Funds – 8.9% | Non-Traditional Funds – 8.9% |
| MFS Commodity Strategy Fund - Class R6 | 6078874 | $22309469 |
| MFS Global Real Estate Fund - Class R6 | 1481633 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23720934 |
|  |  | $46030403 |
| U.S. Stock Funds – 53.5% | U.S. Stock Funds – 53.5% | U.S. Stock Funds – 53.5% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;700996 | $24044151 |
| MFS Blended Research Growth Equity Fund - Class R6 | 1132072 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25958402 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 3710906 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49466374 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;918333 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11809768 |
| MFS Blended Research Value Equity Fund - Class R6 | 1770413 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26927976 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;136916 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25737536 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;834963 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25265986 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;819732 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24387032 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;208661 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6038651 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;356446 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5845721 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;442083 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23938786 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;551384 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26846892 |
|  |  | $276267275 |
| Money Market Funds – 1.9% | Money Market Funds – 1.9% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 9601592 | $9601592 |
| **Total Mutual Funds (Identified Cost, $413,386,967)** | **Total Mutual Funds (Identified Cost, $413,386,967)** | &nbsp;&nbsp;**$515991999** |
| Other Assets, Less Liabilities – (0.0)% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6519) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$515985480** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*6*

*LTFFS-ANN*

------

Portfolio of Investments – continued

#### MFS Lifetime 2050 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 4.3% | Bond Funds – 4.3% | Bond Funds – 4.3% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;1428805 | $13187875 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;1107712 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10545415 |
|  |  | $23733290 |
| International Stock Funds – 28.4% | International Stock Funds – 28.4% | International Stock Funds – 28.4% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;395849 | $5628967 |
| MFS Blended Research International Equity Fund - Class R6 | &nbsp;&nbsp;4368240 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62291107 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;153565 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5632749 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;441057 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19763756 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;495897 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19786302 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;704464 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22458312 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;937243 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22559441 |
|  |  | $158120634 |
| Non-Traditional Funds – 9.8% | Non-Traditional Funds – 9.8% | Non-Traditional Funds – 9.8% |
| MFS Commodity Strategy Fund - Class R6 | &nbsp;&nbsp;7245803 | $26592099 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;1749504 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28009554 |
|  |  | $54601653 |
| U.S. Stock Funds – 55.6% | U.S. Stock Funds – 55.6% | U.S. Stock Funds – 55.6% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;753899 | $25858728 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;1262414 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28947158 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | &nbsp;&nbsp;4189421 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55844984 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;1086766 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13975819 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;1997391 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30380322 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;153313 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28819744 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;933485 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28247246 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;928359 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27618673 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;244429 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7073781 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;423239 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6941128 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;476570 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25806253 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;622618 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30315255 |
|  |  | $309829091 |
| Money Market Funds – 1.9% | Money Market Funds – 1.9% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 10477821 | $10477821 |
| **Total Mutual Funds (Identified Cost, $440,205,535)** | **Total Mutual Funds (Identified Cost, $440,205,535)** | &nbsp;&nbsp;**$556762489** |
| Other Assets, Less Liabilities – (0.0)% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(30623) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$556731866** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*LTFFS-ANN*

*7*

------

Portfolio of Investments – continued

#### MFS Lifetime 2055 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 4.3% | Bond Funds – 4.3% | Bond Funds – 4.3% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;992560 | $9161329 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;769842 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7328895 |
|  |  | $16490224 |
| International Stock Funds – 28.5% | International Stock Funds – 28.5% | International Stock Funds – 28.5% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;271300 | $3857885 |
| MFS Blended Research International Equity Fund - Class R6 | 3009677 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42917998 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;105242 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3860289 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;303331 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13592273 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;341611 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13630273 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;482186 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15372079 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;643707 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15494025 |
|  |  | $108724822 |
| Non-Traditional Funds – 9.8% | Non-Traditional Funds – 9.8% | Non-Traditional Funds – 9.8% |
| MFS Commodity Strategy Fund - Class R6 | 4980371 | $18277962 |
| MFS Global Real Estate Fund - Class R6 | 1196723 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19159536 |
|  |  | $37437498 |
| U.S. Stock Funds – 55.5% | U.S. Stock Funds – 55.5% | U.S. Stock Funds – 55.5% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;514949 | $17662747 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;868653 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19918213 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 2859275 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38114141 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;742256 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9545412 |
| MFS Blended Research Value Equity Fund - Class R6 | 1366423 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20783299 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;105162 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19768328 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;641480 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19411179 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;634105 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18864615 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;168171 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4866876 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;288475 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4730988 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;325535 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17627734 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;426251 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20754154 |
|  |  | $212047686 |
| Money Market Funds – 1.9% | Money Market Funds – 1.9% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 7230423 | $7230422 |
| **Total Mutual Funds (Identified Cost, $321,172,452)** | **Total Mutual Funds (Identified Cost, $321,172,452)** | &nbsp;&nbsp;**$381930652** |
| Other Assets, Less Liabilities – 0.0% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41310 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$381971962** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*8*

*LTFFS-ANN*

------

Portfolio of Investments – continued

#### MFS Lifetime 2060 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 4.5% | Bond Funds – 4.5% | Bond Funds – 4.5% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;593112 | $5474426 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;459485 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4374292 |
|  |  | $9848718 |
| International Stock Funds – 28.4% | International Stock Funds – 28.4% | International Stock Funds – 28.4% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;153447 | $2182012 |
| MFS Blended Research International Equity Fund - Class R6 | 1708532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24363660 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;59579 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2185372 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;172403 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7725370 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;194095 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7744395 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;279398 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8907219 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;367007 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8833855 |
|  |  | $61941883 |
| Non-Traditional Funds – 9.9% | Non-Traditional Funds – 9.9% | Non-Traditional Funds – 9.9% |
| MFS Commodity Strategy Fund - Class R6 | 2876984 | $10558533 |
| MFS Global Real Estate Fund - Class R6 | &nbsp;&nbsp;682670 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10929549 |
|  |  | $21488082 |
| U.S. Stock Funds – 55.2% | U.S. Stock Funds – 55.2% | U.S. Stock Funds – 55.2% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;292163 | $10021197 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;487527 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11178984 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 1623390 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21639785 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;417816 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5373112 |
| MFS Blended Research Value Equity Fund - Class R6 | &nbsp;&nbsp;780681 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11874152 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;59454 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11176195 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;362590 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10971987 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;361043 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10741029 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;&nbsp;&nbsp;94322 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2729677 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;163457 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2680698 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;185220 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10029661 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;244066 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11883594 |
|  |  | $120300071 |
| Money Market Funds – 2.0% | Money Market Funds – 2.0% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 4404968 | $4404968 |
| **Total Mutual Funds (Identified Cost, $195,229,003)** | **Total Mutual Funds (Identified Cost, $195,229,003)** | &nbsp;&nbsp;**$217983722** |
| Other Assets, Less Liabilities – (0.0)% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(30075) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$217953647** |

---

#### See Portfolio Footnotes and Notes to Financial Statements
*LTFFS-ANN*

*9*

------

Portfolio of Investments – continued

#### MFS Lifetime 2065 Fund

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% | Mutual Funds (h) – 100.0% |
| Bond Funds – 4.5% | Bond Funds – 4.5% | Bond Funds – 4.5% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | &nbsp;&nbsp;88596 | $817739 |
| MFS Total Return Bond Fund - Class R6 | &nbsp;&nbsp;68719 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;654205 |
|  |  | $1471944 |
| International Stock Funds – 28.0% | International Stock Funds – 28.0% | International Stock Funds – 28.0% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;23004 | $327114 |
| MFS Blended Research International Equity Fund - Class R6 | 252335 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3598301 |
| MFS Emerging Markets Equity Fund - Class R6 | &nbsp;&nbsp;&nbsp;8918 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;327119 |
| MFS International Growth Fund - Class R6 | &nbsp;&nbsp;25550 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1144892 |
| MFS International Intrinsic Value Fund - Class R6 | &nbsp;&nbsp;28694 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1144879 |
| MFS International New Discovery Fund - Class R6 | &nbsp;&nbsp;41043 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1308452 |
| MFS Research International Fund - Class R6 | &nbsp;&nbsp;54360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1308453 |
|  |  | $9159210 |
| Non-Traditional Funds – 10.0% | Non-Traditional Funds – 10.0% | Non-Traditional Funds – 10.0% |
| MFS Commodity Strategy Fund - Class R6 | 445517 | $1635045 |
| MFS Global Real Estate Fund - Class R6 | 102160 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1635585 |
|  |  | $3270630 |
| U.S. Stock Funds – 55.5% | U.S. Stock Funds – 55.5% | U.S. Stock Funds – 55.5% |
| MFS Blended Research Core Equity Fund - Class R6 | &nbsp;&nbsp;44112 | $1513032 |
| MFS Blended Research Growth Equity Fund - Class R6 | &nbsp;&nbsp;73383 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1682677 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 245400 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3271180 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | &nbsp;&nbsp;63588 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;817746 |
| MFS Blended Research Value Equity Fund - Class R6 | 118287 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1799147 |
| MFS Growth Fund - Class R6 | &nbsp;&nbsp;&nbsp;8920 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1676782 |
| MFS Mid Cap Growth Fund - Class R6 | &nbsp;&nbsp;54058 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1635787 |
| MFS Mid Cap Value Fund - Class R6 | &nbsp;&nbsp;54974 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1635476 |
| MFS New Discovery Fund - Class R6 (a) | &nbsp;&nbsp;14130 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;408931 |
| MFS New Discovery Value Fund - Class R6 | &nbsp;&nbsp;24930 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;408853 |
| MFS Research Fund - Class R6 | &nbsp;&nbsp;27941 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1513021 |
| MFS Value Fund - Class R6 | &nbsp;&nbsp;36952 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1799186 |
|  |  | $18161818 |
| Money Market Funds – 2.0% | Money Market Funds – 2.0% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) | 639795 | $639795 |
| **Total Mutual Funds (Identified Cost, $31,358,758)** | **Total Mutual Funds (Identified Cost, $31,358,758)** | &nbsp;&nbsp;**$32703397** |
| Other Assets, Less Liabilities – 0.0% |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3633 |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp;**$32707030** |

---

Portfolio Footnotes:

(a) Non-income producing security.

(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values
of each fund's investments in affiliated issuers were as follows:

---

| | |
|:---|:---|
|  | **Affiliated Issuers** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime Income Fund | $551373855 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2025 Fund | &nbsp;&nbsp;350241042 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2030 Fund | &nbsp;&nbsp;741922148 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2035 Fund | &nbsp;&nbsp;603564177 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2040 Fund | &nbsp;&nbsp;765288659 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2045 Fund | &nbsp;&nbsp;515991999 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2050 Fund | &nbsp;&nbsp;556762489 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2055 Fund | &nbsp;&nbsp;381930652 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2060 Fund | &nbsp;&nbsp;217983722 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MFS Lifetime 2065 Fund | &nbsp;&nbsp;&nbsp;&nbsp;32703397 |

---

*10*

*LTFFS-ANN*

------

Portfolio of Investments – continued

(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.

#### See Notes to Financial Statements
*LTFFS-ANN*

*11*

------

*Financial Statements*

### Statements of Assets and Liabilities
At 4/30/25

These statements represent each fund's balance sheet, which details the assets and liabilities comprising the total value of each fund.

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** |
| **Assets** |  |  |  |
| Investments in affiliated issuers, at value (identified cost, $490,978,517, $321,203,116, and $632,850,414, respectively) | $551373855 | $350241042 | $741922148 |
| Receivables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;2894554 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;539451 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6715911 |
| &nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;101223 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59723 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;131046 |
| Receivable from investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;119423 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99282 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;166755 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1196 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;834 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1455 |
| Total assets | $554490251 | $350940332 | $748937315 |
| **Liabilities** |  |  |  |
| Payables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Distributions | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$70483 | $— | $— |
| &nbsp;&nbsp;&nbsp;Investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1006 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15952 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30085 |
| &nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;2694824 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;545224 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7031442 |
| Payable to affiliates |  |  |  |
| &nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;148333 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70240 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;158098 |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5008 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2020 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5499 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;204 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;127 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;256 |
| Payable for audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39455 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38522 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39365 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19475 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9253 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14493 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;$2978882 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$681432 | &nbsp;&nbsp;&nbsp;&nbsp;$7279332 |
| Net assets | $551511369 | $350258900 | $741657983 |
| **Net assets consist of** |  |  |  |
| Paid-in capital | $512234594 | $325486540 | $628376069 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;39276775 | &nbsp;&nbsp;&nbsp;&nbsp;24772360 | &nbsp;&nbsp;&nbsp;113281914 |
| Net assets | $551511369 | $350258900 | $741657983 |

---

------

Statements of Assets and Liabilities – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** |
| Net assets |  |  |  |
| Class A | $185202408 | &nbsp;&nbsp;&nbsp;$30416323 | &nbsp;&nbsp;&nbsp;$91791228 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;431192 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;255617 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1142176 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;14121068 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2139808 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7121173 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;42870328 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3077399 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8188652 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;2583284 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;337020 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3103086 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;21431715 | &nbsp;&nbsp;&nbsp;&nbsp;11897470 | &nbsp;&nbsp;&nbsp;&nbsp;34540836 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;87294125 | &nbsp;&nbsp;&nbsp;&nbsp;82362541 | &nbsp;&nbsp;&nbsp;195870443 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;16706795 | &nbsp;&nbsp;&nbsp;&nbsp;29836492 | &nbsp;&nbsp;&nbsp;&nbsp;42039847 |
| Class R6 | &nbsp;&nbsp;180870454 | &nbsp;&nbsp;&nbsp;189936230 | &nbsp;&nbsp;&nbsp;357860542 |
| Total net assets | $551511369 | $350258900 | $741657983 |
| Shares of beneficial interest outstanding |  |  |  |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;15256214 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2320597 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5828574 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35519 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19454 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72860 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;1163906 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165472 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;462023 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;3530432 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;233782 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;516367 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;212464 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25588 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;198606 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;1765235 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;909333 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2213163 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;7191693 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6290040 | &nbsp;&nbsp;&nbsp;&nbsp;12480547 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;1376953 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2257556 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2639359 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;14852664 | &nbsp;&nbsp;&nbsp;&nbsp;14387788 | &nbsp;&nbsp;&nbsp;&nbsp;22511569 |
| Total shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;45385080 | &nbsp;&nbsp;&nbsp;&nbsp;26609610 | &nbsp;&nbsp;&nbsp;&nbsp;46923068 |
| Class A shares |  |  |  |
| Net asset value per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.75 |
| Offering price per share (100 / 95.75 x net asset value per share) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.68 | $— | $— |
| Offering price per share (100 / 94.25 x net asset value per share) | $— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.71 |
| Class B shares |  |  |  |
| Net asset value and offering price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.68 |
| Class C shares |  |  |  |
| Net asset value and offering price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.41 |
| Class I shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.86 |
| Class R1 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.62 |
| Class R2 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.61 |
| Class R3 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.69 |
| Class R4 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.93 |

---

------

Statements of Assets and Liabilities – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** |
| Class R6 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | $12.18 | $13.20 | $15.90 |
| On sales of $100,000 or more, the maximum offering price of Class A shares is reduced for the MFS Lifetime Income Fund. On sales of $50,000 or more, the maximum offering price of Class A shares is reduced for all other funds. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $100,000 or more, the maximum offering price of Class A shares is reduced for the MFS Lifetime Income Fund. On sales of $50,000 or more, the maximum offering price of Class A shares is reduced for all other funds. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $100,000 or more, the maximum offering price of Class A shares is reduced for the MFS Lifetime Income Fund. On sales of $50,000 or more, the maximum offering price of Class A shares is reduced for all other funds. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $100,000 or more, the maximum offering price of Class A shares is reduced for the MFS Lifetime Income Fund. On sales of $50,000 or more, the maximum offering price of Class A shares is reduced for all other funds. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. |

---

#### See Notes to Financial Statements

------

Statements of Assets and Liabilities – continued

---

| | | | | |
|:---|:---|:---|:---|:---|
| **At 4/30/25** | **MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** |
| **Assets** |  |  |  |  |
| Investments in affiliated issuers, at value (identified cost, $501,143,950, $567,545,781, $413,386,967, and $440,205,535, respectively) | $603564177 | $765288659 | $515991999 | $556762489 |
| Receivables for |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;1174078 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4497685 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;105699 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2603008 |
| &nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;143870 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;433310 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;380299 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;283802 |
| Receivable from investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;134249 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;174963 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;132619 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;145565 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1208 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1448 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1092 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1164 |
| Total assets | $605017582 | $770396065 | $516611708 | $559796028 |
| **Liabilities** |  |  |  |  |
| Payables for |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$33528 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$202165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$46243 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$31920 |
| &nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;545677 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4687864 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;410847 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2851882 |
| Payable to affiliates |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;118436 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;170165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;115925 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;125725 |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3535 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5246 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2981 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3307 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;191 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;248 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;176 |
| Payable for audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38518 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39361 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38518 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38652 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11770 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13823 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11455 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12406 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$751749 | &nbsp;&nbsp;&nbsp;&nbsp;$5118966 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$626228 | &nbsp;&nbsp;&nbsp;&nbsp;$3064162 |
| Net assets | $604265833 | $765277099 | $515985480 | $556731866 |
| **Net assets consist of** |  |  |  |  |
| Paid-in capital | $495498296 | $558657875 | $407656905 | $431984045 |
| Total distributable earnings (loss) | &nbsp;&nbsp;108767537 | &nbsp;&nbsp;&nbsp;206619224 | &nbsp;&nbsp;&nbsp;108328575 | &nbsp;&nbsp;&nbsp;124747821 |
| Net assets | $604265833 | $765277099 | $515985480 | $556731866 |

---

------

Statements of Assets and Liabilities – continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** |
| Net assets |  |  |  |  |
| Class A | &nbsp;&nbsp;$47515713 | &nbsp;&nbsp;&nbsp;$73805297 | &nbsp;&nbsp;&nbsp;$36370783 | &nbsp;&nbsp;&nbsp;$39990645 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;334160 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;956381 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;263933 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;459469 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;5366902 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5906653 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3063544 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4100472 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;8644983 | &nbsp;&nbsp;&nbsp;&nbsp;14338779 | &nbsp;&nbsp;&nbsp;&nbsp;12335401 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7780417 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;1357580 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3135016 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;773855 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;915775 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;13188996 | &nbsp;&nbsp;&nbsp;&nbsp;38622165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9960818 | &nbsp;&nbsp;&nbsp;&nbsp;16546563 |
| Class R3 | &nbsp;&nbsp;155985126 | &nbsp;&nbsp;&nbsp;192892666 | &nbsp;&nbsp;&nbsp;145616944 | &nbsp;&nbsp;&nbsp;147221623 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;25267323 | &nbsp;&nbsp;&nbsp;&nbsp;40945689 | &nbsp;&nbsp;&nbsp;&nbsp;20375028 | &nbsp;&nbsp;&nbsp;&nbsp;34358773 |
| Class R6 | &nbsp;&nbsp;346605050 | &nbsp;&nbsp;&nbsp;394674453 | &nbsp;&nbsp;&nbsp;287225174 | &nbsp;&nbsp;&nbsp;305358129 |
| Total net assets | $604265833 | $765277099 | $515985480 | $556731866 |
| Shares of beneficial interest outstanding |  |  |  |  |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;2714312 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3830968 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1896053 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1730220 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19081 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49624 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13773 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20080 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;312070 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;313859 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;162259 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;181988 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;491937 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;737554 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;638571 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;336282 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77917 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;164448 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40540 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40481 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;751641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2017104 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;520380 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;724100 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;8887307 | &nbsp;&nbsp;&nbsp;&nbsp;10012650 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7593034 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6429631 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;1425508 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2092444 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1051922 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1483995 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;19596856 | &nbsp;&nbsp;&nbsp;&nbsp;20199574 | &nbsp;&nbsp;&nbsp;&nbsp;14859131 | &nbsp;&nbsp;&nbsp;&nbsp;13209472 |
| Total shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;34276629 | &nbsp;&nbsp;&nbsp;&nbsp;39418225 | &nbsp;&nbsp;&nbsp;&nbsp;26775663 | &nbsp;&nbsp;&nbsp;&nbsp;24156249 |
| Class A shares |  |  |  |  |
| Net asset value per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.11 |
| Offering price per share (100 / 94.25 x net asset value per share) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$24.52 |
| Class B shares |  |  |  |  |
| Net asset value and offering price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.88 |
| Class C shares |  |  |  |  |
| Net asset value and offering price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.53 |
| Class I shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.14 |
| Class R1 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.62 |
| Class R2 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.85 |
| Class R3 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.90 |
| Class R4 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.15 |

---

------

Statements of Assets and Liabilities – continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** |
| Class R6 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | $17.69 | $19.54 | $19.33 | $23.12 |
| On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. |

---

------

Statements of Assets and Liabilities – continued

---

| | | | |
|:---|:---|:---|:---|
| **At 4/30/25** | **MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| **Assets** |  |  |  |
| Investments in affiliated issuers, at value (identified cost, $321,172,452, $195,229,003, and $31,358,758, respectively) | $381930652 | $217983722 | $32703397 |
| Receivables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments sold |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;690936 |  |
| &nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;442052 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;214598 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;417874 |
| Receivable from investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;123462 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95639 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38981 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;844 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;544 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;148 |
| Total assets | $382497010 | $218985439 | $33160400 |
| **Liabilities** |  |  |  |
| Payables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$266834 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$142483 | &nbsp;&nbsp;&nbsp;&nbsp;$394191 |
| &nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;123302 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;786377 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11463 |
| Payable to affiliates |  |  |  |
| &nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83239 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53397 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7975 |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2373 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1370 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;231 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;115 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6 |
| Payable for audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38519 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37709 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31880 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10572 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10300 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7530 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$525048 | &nbsp;&nbsp;&nbsp;&nbsp;$1031792 | &nbsp;&nbsp;&nbsp;&nbsp;$453370 |
| Net assets | $381971962 | $217953647 | $32707030 |
| **Net assets consist of** |  |  |  |
| Paid-in capital | $315245662 | $192218322 | $30685028 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;66726300 | &nbsp;&nbsp;&nbsp;&nbsp;25735325 | &nbsp;&nbsp;&nbsp;&nbsp;2022002 |
| Net assets | $381971962 | $217953647 | $32707030 |

---

------

Statements of Assets and Liabilities – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Net assets |  |  |  |
| Class A | &nbsp;&nbsp;$24602738 | &nbsp;&nbsp;&nbsp;$18301807 | &nbsp;&nbsp;&nbsp;$2102808 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;290823 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;145828 |  |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;2842768 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1677027 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;302759 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;3998803 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;896062 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;326867 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;2216346 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;102237 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64736 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;11094165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3988334 | &nbsp;&nbsp;&nbsp;&nbsp;1543798 |
| Class R3 | &nbsp;&nbsp;105695283 | &nbsp;&nbsp;&nbsp;&nbsp;66822863 | &nbsp;&nbsp;&nbsp;10627730 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;12635428 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5667990 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;878404 |
| Class R6 | &nbsp;&nbsp;218595608 | &nbsp;&nbsp;&nbsp;120351499 | &nbsp;&nbsp;&nbsp;16859928 |
| Total net assets | $381971962 | $217953647 | $32707030 |
| Shares of beneficial interest outstanding |  |  |  |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;1233335 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1137877 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;213107 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14586 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9023 |  |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;144736 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;105448 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30861 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;200213 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55183 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32982 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;112736 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6314 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6565 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;556430 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;248316 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;156737 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;5297607 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4148337 | &nbsp;&nbsp;&nbsp;&nbsp;1077095 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;626228 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;349267 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;88712 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;10846222 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7394819 | &nbsp;&nbsp;&nbsp;&nbsp;1700296 |
| Total shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;19032093 | &nbsp;&nbsp;&nbsp;&nbsp;13454584 | &nbsp;&nbsp;&nbsp;&nbsp;3306355 |
| Class A shares |  |  |  |
| Net asset value per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.87 |
| Offering price per share (100 / 94.25 x net asset value per share) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$10.47 |
| Class B shares |  |  |  |
| Net asset value and offering price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.16 | $— |
| Class C shares |  |  |  |
| Net asset value and offering price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.81 |
| Class I shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.91 |
| Class R1 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Class R2 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.85 |
| Class R3 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.87 |
| Class R4 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.90 |

---

------

Statements of Assets and Liabilities – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Class R6 shares |  |  |  |
| Net asset value, offering price, and redemption price per share<br> (net assets / shares of beneficial interest outstanding) | $20.15 | $16.28 | $9.92 |
| On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. | On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. |

---

------

*Financial Statements*

### Statements of Operations
Year ended 4/30/25

These statements describe how much each fund earned in investment income and accrued in expenses. They also describe any gains or losses generated by each fund's operations.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| **Net investment income (loss)** |  |  |  |  |  |
| Dividends from affiliated issuers | $22494405 | $13968395 | $26992813 | $18882101 | $21713025 |
| Other | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;181 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;121 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;213 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;169 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;206 |
| Payments from investment adviser for other expenses agreement (See Note 3) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;232764 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;274934 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;527299 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;493623 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;556762 |
| Total investment income | $22727350 | $14243450 | $27520325 | $19375893 | $22269993 |
| Expenses |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;$1084807 | &nbsp;&nbsp;&nbsp;&nbsp;$422317 | &nbsp;&nbsp;&nbsp;$1067305 | &nbsp;&nbsp;&nbsp;&nbsp;$678871 | &nbsp;&nbsp;&nbsp;$1027292 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;586320 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;293673 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;633300 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;454833 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;655331 |
| &nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 |
| &nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8687 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15545 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12630 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15647 |
| &nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24129 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10097 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17118 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13871 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16846 |
| &nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59012 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28043 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49591 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43190 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57822 |
| &nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;50699 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49256 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;50115 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49261 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49611 |
| &nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1447 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2099 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4017 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3588 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4266 |
| &nbsp;&nbsp;&nbsp;Registration fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;152494 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;151759 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;155060 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;156477 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;158138 |
| &nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38548 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37122 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41744 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39253 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41428 |
| Total expenses | &nbsp;&nbsp;$2027488 | &nbsp;&nbsp;&nbsp;$1020553 | &nbsp;&nbsp;&nbsp;$2051295 | &nbsp;&nbsp;&nbsp;$1469474 | &nbsp;&nbsp;&nbsp;$2043881 |
| &nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | &nbsp;&nbsp;&nbsp;&nbsp;(959921) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(601648) | &nbsp;&nbsp;&nbsp;&nbsp;(1000787) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(789148) | &nbsp;&nbsp;&nbsp;&nbsp;(1014627) |
| Net expenses | &nbsp;&nbsp;$1067567 | &nbsp;&nbsp;&nbsp;&nbsp;$418905 | &nbsp;&nbsp;&nbsp;$1050508 | &nbsp;&nbsp;&nbsp;&nbsp;$680326 | &nbsp;&nbsp;&nbsp;$1029254 |
| Net investment income (loss) | $21659783 | $13824545 | $26469817 | $18695567 | $21240739 |
| **Realized and unrealized gain (loss)** |  |  |  |  |  |
| Realized gain (loss) (identified cost basis) |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments in affiliated issuers | &nbsp;&nbsp;$6473992 | &nbsp;&nbsp;&nbsp;$4692047 | $22297782 | &nbsp;&nbsp;&nbsp;$6320303 | &nbsp;&nbsp;&nbsp;$7311305 |
| &nbsp;&nbsp;&nbsp;Capital gain distributions from affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;7696195 | &nbsp;&nbsp;&nbsp;&nbsp;5244498 | &nbsp;&nbsp;&nbsp;16353831 | &nbsp;&nbsp;&nbsp;19127545 | &nbsp;&nbsp;&nbsp;31310257 |
| Net realized gain (loss) | $14170187 | &nbsp;&nbsp;&nbsp;$9936545 | $38651613 | $25447848 | $38621562 |
| Change in unrealized appreciation or depreciation |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Affiliated issuers | $10314434 | &nbsp;&nbsp;&nbsp;$6425990 | &nbsp;&nbsp;$(1109867) | &nbsp;&nbsp;&nbsp;$7616731 | &nbsp;&nbsp;&nbsp;$6889783 |
| Net realized and unrealized gain (loss) | $24484621 | $16362535 | $37541746 | $33064579 | $45511345 |
| Change in net assets from operations | $46144404 | $30187080 | $64011563 | $51760146 | $66752084 |

---

#### See Notes to Financial Statements

------

Statements of Operations – continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/25** | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| **Net investment income (loss)** |  |  |  |  |  |
| Dividends from affiliated issuers | $13504263 | $13454561 | &nbsp;&nbsp;&nbsp;$8922162 | &nbsp;&nbsp;&nbsp;$4963062 | &nbsp;&nbsp;&nbsp;&nbsp;$613061 |
| Other | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;147 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;154 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;112 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 |
| Payments from investment adviser for other expenses agreement (See Note 3) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;422935 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;446598 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;313135 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;170702 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17491 |
| Total investment income | $13927345 | $13901313 | &nbsp;&nbsp;&nbsp;$9235409 | &nbsp;&nbsp;&nbsp;$5133832 | &nbsp;&nbsp;&nbsp;&nbsp;$630569 |
| Expenses |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;$587989 | &nbsp;&nbsp;&nbsp;&nbsp;$635125 | &nbsp;&nbsp;&nbsp;&nbsp;$440669 | &nbsp;&nbsp;&nbsp;&nbsp;$244804 | &nbsp;&nbsp;&nbsp;&nbsp;$31914 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;430733 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;476668 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;327683 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;210502 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36023 |
| &nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 |
| &nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11237 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11883 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8591 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5705 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3001 |
| &nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12509 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13656 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9902 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7484 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9391 |
| &nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48186 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60458 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60905 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59521 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14437 |
| &nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48759 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48893 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48752 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47936 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42100 |
| &nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3156 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3408 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2255 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1258 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;151 |
| &nbsp;&nbsp;&nbsp;Registration fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;153287 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;152024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;150790 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;147618 | &nbsp;&nbsp;&nbsp;&nbsp;126744 |
| &nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38369 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38958 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37103 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35453 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32628 |
| Total expenses | &nbsp;&nbsp;$1351725 | &nbsp;&nbsp;&nbsp;$1458573 | &nbsp;&nbsp;&nbsp;$1104150 | &nbsp;&nbsp;&nbsp;&nbsp;$777781 | &nbsp;&nbsp;&nbsp;&nbsp;$313889 |
| &nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | &nbsp;&nbsp;&nbsp;&nbsp;(761123) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(820381) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(662262) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(532096) | &nbsp;&nbsp;&nbsp;&nbsp;(283369) |
| Net expenses | &nbsp;&nbsp;&nbsp;&nbsp;$590602 | &nbsp;&nbsp;&nbsp;&nbsp;$638192 | &nbsp;&nbsp;&nbsp;&nbsp;$441888 | &nbsp;&nbsp;&nbsp;&nbsp;$245685 | &nbsp;&nbsp;&nbsp;&nbsp;$30520 |
| Net investment income (loss) | $13336743 | $13263121 | &nbsp;&nbsp;&nbsp;$8793521 | &nbsp;&nbsp;&nbsp;$4888147 | &nbsp;&nbsp;&nbsp;&nbsp;$600049 |
| **Realized and unrealized gain (loss)** |  |  |  |  |  |
| Realized gain (loss) (identified cost basis) |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments in affiliated issuers | &nbsp;&nbsp;$4349701 | &nbsp;&nbsp;&nbsp;$4743463 | &nbsp;&nbsp;&nbsp;$1492045 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$62644 | &nbsp;&nbsp;&nbsp;&nbsp;$(21583) |
| &nbsp;&nbsp;&nbsp;Capital gain distributions from affiliated issuers | &nbsp;&nbsp;22652141 | &nbsp;&nbsp;&nbsp;25455008 | &nbsp;&nbsp;&nbsp;16869423 | &nbsp;&nbsp;&nbsp;&nbsp;9382967 | &nbsp;&nbsp;&nbsp;1167767 |
| Net realized gain (loss) | $27001842 | $30198471 | $18361468 | &nbsp;&nbsp;&nbsp;$9445611 | $1146184 |
| Change in unrealized appreciation or depreciation |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;$4890681 | &nbsp;&nbsp;&nbsp;$4922929 | &nbsp;&nbsp;&nbsp;$4443995 | &nbsp;&nbsp;&nbsp;$2549488 | &nbsp;&nbsp;&nbsp;&nbsp;$(63445) |
| Net realized and unrealized gain (loss) | $31892523 | $35121400 | $22805463 | $11995099 | $1082739 |
| Change in net assets from operations | $45229266 | $48384521 | $31598984 | $16883246 | $1682788 |

---

------

*Financial Statements*

### Statements of Changes in Net Assets
These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/25** | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| **Change in net assets** |  |  |  |  |  |
| **From operations** |  |  |  |  |  |
| Net investment income (loss) | &nbsp;&nbsp;$21659783 | &nbsp;&nbsp;&nbsp;$13824545 | &nbsp;&nbsp;&nbsp;$26469817 | &nbsp;&nbsp;&nbsp;$18695567 | &nbsp;&nbsp;&nbsp;$21240739 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;14170187 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9936545 | &nbsp;&nbsp;&nbsp;&nbsp;38651613 | &nbsp;&nbsp;&nbsp;&nbsp;25447848 | &nbsp;&nbsp;&nbsp;&nbsp;38621562 |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;10314434 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6425990 | &nbsp;&nbsp;&nbsp;&nbsp;(1109867) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7616731 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6889783 |
| Change in net assets from operations | &nbsp;&nbsp;$46144404 | &nbsp;&nbsp;&nbsp;$30187080 | &nbsp;&nbsp;&nbsp;$64011563 | &nbsp;&nbsp;&nbsp;$51760146 | &nbsp;&nbsp;&nbsp;$66752084 |
| Total distributions to shareholders | $(38307709) | &nbsp;&nbsp;$(24215523) | &nbsp;&nbsp;$(57307216) | &nbsp;&nbsp;$(31353909) | &nbsp;&nbsp;$(39423987) |
| Change in net assets from fund share transactions | $(77869927) | &nbsp;&nbsp;$(42290234) | &nbsp;&nbsp;$(50643407) | &nbsp;&nbsp;&nbsp;&nbsp;$(9097772) | &nbsp;&nbsp;$(29249942) |
| Total change in net assets | $(70033232) | &nbsp;&nbsp;$(36318677) | &nbsp;&nbsp;$(43939060) | &nbsp;&nbsp;&nbsp;$11308465 | &nbsp;&nbsp;&nbsp;&nbsp;$(1921845) |
| **Net assets** |  |  |  |  |  |
| At beginning of period | &nbsp;&nbsp;621544601 | &nbsp;&nbsp;&nbsp;386577577 | &nbsp;&nbsp;&nbsp;785597043 | &nbsp;&nbsp;&nbsp;592957368 | &nbsp;&nbsp;&nbsp;767198944 |
| At end of period | $551511369 | $350258900 | $741657983 | $604265833 | $765277099 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/25** | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| **Change in net assets** |  |  |  |  |  |
| **From operations** |  |  |  |  |  |
| Net investment income (loss) | &nbsp;&nbsp;$13336743 | &nbsp;&nbsp;&nbsp;$13263121 | &nbsp;&nbsp;&nbsp;&nbsp;$8793521 | &nbsp;&nbsp;&nbsp;&nbsp;$4888147 | &nbsp;&nbsp;&nbsp;&nbsp;$600049 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;27001842 | &nbsp;&nbsp;&nbsp;&nbsp;30198471 | &nbsp;&nbsp;&nbsp;&nbsp;18361468 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9445611 | &nbsp;&nbsp;&nbsp;&nbsp;1146184 |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;4890681 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4922929 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4443995 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2549488 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(63445) |
| Change in net assets from operations | &nbsp;&nbsp;$45229266 | &nbsp;&nbsp;&nbsp;$48384521 | &nbsp;&nbsp;&nbsp;$31598984 | &nbsp;&nbsp;&nbsp;$16883246 | &nbsp;&nbsp;&nbsp;$1682788 |
| Total distributions to shareholders | $(24993079) | &nbsp;&nbsp;$(25554001) | &nbsp;&nbsp;$(15990066) | &nbsp;&nbsp;&nbsp;&nbsp;$(8050553) | &nbsp;&nbsp;&nbsp;&nbsp;$(901894) |
| Change in net assets from fund share transactions | $(11672658) | &nbsp;&nbsp;$(14013605) | &nbsp;&nbsp;&nbsp;&nbsp;$8551863 | &nbsp;&nbsp;&nbsp;$16329620 | $13699343 |
| Total change in net assets | &nbsp;&nbsp;&nbsp;&nbsp;$8563529 | &nbsp;&nbsp;&nbsp;&nbsp;$8816915 | &nbsp;&nbsp;&nbsp;$24160781 | &nbsp;&nbsp;&nbsp;$25162313 | $14480237 |
| **Net assets** |  |  |  |  |  |
| At beginning of period | &nbsp;&nbsp;507421951 | &nbsp;&nbsp;&nbsp;547914951 | &nbsp;&nbsp;&nbsp;357811181 | &nbsp;&nbsp;&nbsp;192791334 | &nbsp;&nbsp;&nbsp;18226793 |
| At end of period | $515985480 | $556731866 | $381971962 | $217953647 | $32707030 |

---

#### See Notes to Financial Statements

------

Statements of Changes in Net Assets – continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/24** | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| **Change in net assets** |  |  |  |  |  |
| **From operations** |  |  |  |  |  |
| Net investment income (loss) | &nbsp;&nbsp;$20607953 | &nbsp;&nbsp;&nbsp;$12056097 | &nbsp;&nbsp;&nbsp;$21620492 | &nbsp;&nbsp;&nbsp;$12932128 | &nbsp;&nbsp;&nbsp;$14107196 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;13176555 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6097068 | &nbsp;&nbsp;&nbsp;&nbsp;20188082 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8832260 | &nbsp;&nbsp;&nbsp;&nbsp;11606884 |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;(1933335) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3542215 | &nbsp;&nbsp;&nbsp;&nbsp;18190051 | &nbsp;&nbsp;&nbsp;&nbsp;35450809 | &nbsp;&nbsp;&nbsp;&nbsp;62817771 |
| Change in net assets from operations | &nbsp;&nbsp;$31851173 | &nbsp;&nbsp;&nbsp;$21695380 | &nbsp;&nbsp;&nbsp;$59998625 | &nbsp;&nbsp;&nbsp;$57215197 | &nbsp;&nbsp;&nbsp;$88531851 |
| Total distributions to shareholders | $(28125348) | &nbsp;&nbsp;$(12272947) | &nbsp;&nbsp;$(29656475) | &nbsp;&nbsp;$(15335080) | &nbsp;&nbsp;$(24513935) |
| Change in net assets from fund share transactions | $(18799478) | &nbsp;&nbsp;&nbsp;$36458690 | &nbsp;&nbsp;&nbsp;$62708566 | &nbsp;&nbsp;&nbsp;$85664033 | &nbsp;&nbsp;&nbsp;$89772806 |
| Total change in net assets | $(15073653) | &nbsp;&nbsp;&nbsp;$45881123 | &nbsp;&nbsp;&nbsp;$93050716 | $127544150 | $153790722 |
| **Net assets** |  |  |  |  |  |
| At beginning of period | &nbsp;&nbsp;636618254 | &nbsp;&nbsp;&nbsp;340696454 | &nbsp;&nbsp;&nbsp;692546327 | &nbsp;&nbsp;&nbsp;465413218 | &nbsp;&nbsp;&nbsp;613408222 |
| At end of period | $621544601 | $386577577 | $785597043 | $592957368 | $767198944 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/24** | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| **Change in net assets** |  |  |  |  |  |
| **From operations** |  |  |  |  |  |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$8184010 | &nbsp;&nbsp;&nbsp;&nbsp;$7959386 | &nbsp;&nbsp;&nbsp;&nbsp;$5175910 | &nbsp;&nbsp;&nbsp;&nbsp;$2662386 | &nbsp;&nbsp;&nbsp;&nbsp;$214304 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;7446742 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8035265 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4609921 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1774450 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54561 |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;44216776 | &nbsp;&nbsp;&nbsp;&nbsp;48872649 | &nbsp;&nbsp;&nbsp;&nbsp;32089109 | &nbsp;&nbsp;&nbsp;&nbsp;17278975 | &nbsp;&nbsp;&nbsp;&nbsp;1441035 |
| Change in net assets from operations | &nbsp;&nbsp;$59847528 | &nbsp;&nbsp;&nbsp;$64867300 | &nbsp;&nbsp;&nbsp;$41874940 | &nbsp;&nbsp;&nbsp;$21715811 | &nbsp;&nbsp;&nbsp;$1709900 |
| Total distributions to shareholders | $(14556070) | &nbsp;&nbsp;$(16711959) | &nbsp;&nbsp;$(10914914) | &nbsp;&nbsp;&nbsp;&nbsp;$(5206962) | &nbsp;&nbsp;&nbsp;&nbsp;$(284999) |
| Change in net assets from fund share transactions | &nbsp;&nbsp;$70634667 | &nbsp;&nbsp;&nbsp;$86207259 | &nbsp;&nbsp;&nbsp;$64351222 | &nbsp;&nbsp;&nbsp;$49691500 | $10331452 |
| Total change in net assets | $115926125 | $134362600 | &nbsp;&nbsp;&nbsp;$95311248 | &nbsp;&nbsp;&nbsp;$66200349 | $11756353 |
| **Net assets** |  |  |  |  |  |
| At beginning of period | &nbsp;&nbsp;391495826 | &nbsp;&nbsp;&nbsp;413552351 | &nbsp;&nbsp;&nbsp;262499933 | &nbsp;&nbsp;&nbsp;126590985 | &nbsp;&nbsp;&nbsp;&nbsp;6470440 |
| At end of period | $507421951 | $547914951 | $357811181 | $192791334 | $18226793 |

---

------

*Financial Statements*

### Financial Highlights

#### MFS Lifetime Income Fund
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.72 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$0.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.95 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.80) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.01 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.77 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $185202 | &nbsp;&nbsp;&nbsp;$186276 | &nbsp;&nbsp;&nbsp;$190944 | &nbsp;&nbsp;&nbsp;$166307 | &nbsp;&nbsp;&nbsp;$164096 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $12.01 | &nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;$13.84 | &nbsp;&nbsp;&nbsp;$12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 | &nbsp;&nbsp;&nbsp;&nbsp;$0.33 | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70 |
| Total from investment operations | &nbsp;&nbsp;$0.83 | &nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;&nbsp;$1.85 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.35) | &nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;$(0.17) |
| From net realized gain | &nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | $(0.70) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | $12.14 | &nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;$13.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.25 | &nbsp;&nbsp;&nbsp;&nbsp;(1.03) | &nbsp;&nbsp;&nbsp;&nbsp;(5.24) | &nbsp;&nbsp;&nbsp;&nbsp;15.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.98 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.15 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$431 | &nbsp;&nbsp;&nbsp;&nbsp;$839 | &nbsp;&nbsp;&nbsp;$1647 | &nbsp;&nbsp;&nbsp;$1914 | &nbsp;&nbsp;&nbsp;$3347 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime Income Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.93 | &nbsp;&nbsp;&nbsp;&nbsp;$12.47 | &nbsp;&nbsp;&nbsp;&nbsp;$13.83 | &nbsp;&nbsp;&nbsp;&nbsp;$12.28 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.85 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.17) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.13 | &nbsp;&nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.93 | &nbsp;&nbsp;&nbsp;&nbsp;$12.47 | &nbsp;&nbsp;&nbsp;&nbsp;$13.83 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;6.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.03) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.98 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.16 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $14121 | &nbsp;&nbsp;&nbsp;$23192 | &nbsp;&nbsp;&nbsp;$39244 | &nbsp;&nbsp;&nbsp;$55415 | &nbsp;&nbsp;&nbsp;$81542 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.02 | &nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 | &nbsp;&nbsp;&nbsp;&nbsp;$12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.63 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.30) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.83) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;$12.02 | &nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.03) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.30 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.14 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $42870 | &nbsp;&nbsp;&nbsp;$41571 | &nbsp;&nbsp;&nbsp;$43462 | &nbsp;&nbsp;&nbsp;$45108 | &nbsp;&nbsp;&nbsp;$46956 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime Income Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $12.03 | &nbsp;&nbsp;&nbsp;$11.96 | &nbsp;&nbsp;&nbsp;$12.49 | &nbsp;&nbsp;&nbsp;$13.85 | &nbsp;&nbsp;&nbsp;$12.30 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 | &nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(1.03) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.71 |
| Total from investment operations | &nbsp;&nbsp;$0.83 | &nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;&nbsp;$1.85 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.35) | &nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;$(0.17) |
| From net realized gain | &nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | $(0.70) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | $12.16 | &nbsp;&nbsp;&nbsp;$12.03 | &nbsp;&nbsp;&nbsp;$11.96 | &nbsp;&nbsp;&nbsp;$12.49 | &nbsp;&nbsp;&nbsp;$13.85 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.25 | &nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;(5.23) | &nbsp;&nbsp;&nbsp;&nbsp;15.15 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.98 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.08 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $2583 | &nbsp;&nbsp;&nbsp;$2703 | &nbsp;&nbsp;&nbsp;$2792 | &nbsp;&nbsp;&nbsp;$1779 | &nbsp;&nbsp;&nbsp;$1932 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;$13.84 | &nbsp;&nbsp;&nbsp;&nbsp;$12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.71 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.56 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;$(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.92 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.24) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;$(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.37) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(4.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15.73 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.60 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $21432 | &nbsp;&nbsp;&nbsp;$22747 | &nbsp;&nbsp;&nbsp;$27337 | &nbsp;&nbsp;&nbsp;$7981 | &nbsp;&nbsp;&nbsp;$10823 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime Income Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 | &nbsp;&nbsp;&nbsp;&nbsp;$12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.99) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.95 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.80) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.01 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.90 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $87294 | &nbsp;&nbsp;&nbsp;$121320 | &nbsp;&nbsp;&nbsp;$120218 | &nbsp;&nbsp;&nbsp;$61647 | &nbsp;&nbsp;&nbsp;$75909 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 | &nbsp;&nbsp;&nbsp;&nbsp;$12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.62 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.30) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.83) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.13 | &nbsp;&nbsp;&nbsp;&nbsp;$12.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;&nbsp;$12.48 | &nbsp;&nbsp;&nbsp;&nbsp;$13.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.03) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.30 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.14 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $16707 | &nbsp;&nbsp;&nbsp;$18412 | &nbsp;&nbsp;&nbsp;$26707 | &nbsp;&nbsp;&nbsp;$11700 | &nbsp;&nbsp;&nbsp;$31138 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime Income Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$12.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.52 | &nbsp;&nbsp;&nbsp;&nbsp;$13.88 | &nbsp;&nbsp;&nbsp;&nbsp;$12.32 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.30 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.71 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.01 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.45) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$12.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.98 | &nbsp;&nbsp;&nbsp;&nbsp;$12.52 | &nbsp;&nbsp;&nbsp;&nbsp;$13.88 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.18) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16.44 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.10 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.24 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12 |
| Net assets at end of period (000 omitted) | $180870 | &nbsp;&nbsp;&nbsp;$204485 | &nbsp;&nbsp;&nbsp;$184269 | &nbsp;&nbsp;&nbsp;$81457 | &nbsp;&nbsp;&nbsp;$87750 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2025 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.97 | &nbsp;&nbsp;&nbsp;&nbsp;$12.65 | &nbsp;&nbsp;&nbsp;&nbsp;$13.38 | &nbsp;&nbsp;&nbsp;&nbsp;$15.00 | &nbsp;&nbsp;&nbsp;&nbsp;$12.75 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.73 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.63 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.88) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.68) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.38) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$13.11 | &nbsp;&nbsp;&nbsp;&nbsp;$12.97 | &nbsp;&nbsp;&nbsp;&nbsp;$12.65 | &nbsp;&nbsp;&nbsp;&nbsp;$13.38 | &nbsp;&nbsp;&nbsp;&nbsp;$15.00 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.47) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20.70 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.77 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $30416 | &nbsp;&nbsp;&nbsp;$36142 | &nbsp;&nbsp;&nbsp;$23748 | &nbsp;&nbsp;&nbsp;$26794 | &nbsp;&nbsp;&nbsp;$29637 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $12.95 | &nbsp;&nbsp;&nbsp;$12.58 | &nbsp;&nbsp;&nbsp;$13.29 | &nbsp;&nbsp;&nbsp;$14.89 | &nbsp;&nbsp;&nbsp;$12.64 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(1.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.36 |
| Total from investment operations | &nbsp;&nbsp;$0.91 | &nbsp;&nbsp;&nbsp;&nbsp;$0.63 | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;$2.50 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;$(0.13) |
| From net realized gain | &nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | $(0.72) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;$(0.25) |
| Net asset value, end of period (x) | $13.14 | &nbsp;&nbsp;&nbsp;$12.95 | &nbsp;&nbsp;&nbsp;$12.58 | &nbsp;&nbsp;&nbsp;$13.29 | &nbsp;&nbsp;&nbsp;$14.89 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.00 | &nbsp;&nbsp;&nbsp;&nbsp;(0.95) | &nbsp;&nbsp;&nbsp;&nbsp;(5.15) | &nbsp;&nbsp;&nbsp;&nbsp;19.83 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$256 | &nbsp;&nbsp;&nbsp;&nbsp;$512 | &nbsp;&nbsp;&nbsp;&nbsp;$799 | &nbsp;&nbsp;&nbsp;$1156 | &nbsp;&nbsp;&nbsp;$1447 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2025 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $12.80 | &nbsp;&nbsp;&nbsp;$12.46 | &nbsp;&nbsp;&nbsp;$13.20 | &nbsp;&nbsp;&nbsp;$14.80 | &nbsp;&nbsp;&nbsp;$12.58 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(1.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.35 |
| Total from investment operations | &nbsp;&nbsp;$0.90 | &nbsp;&nbsp;&nbsp;&nbsp;$0.62 | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;$2.49 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.38) | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;$(0.15) |
| From net realized gain | &nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | $(0.77) | &nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;$(0.60) | &nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;$(0.27) |
| Net asset value, end of period (x) | $12.93 | &nbsp;&nbsp;&nbsp;$12.80 | &nbsp;&nbsp;&nbsp;$12.46 | &nbsp;&nbsp;&nbsp;$13.20 | &nbsp;&nbsp;&nbsp;$14.80 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.96 | &nbsp;&nbsp;&nbsp;&nbsp;(0.88) | &nbsp;&nbsp;&nbsp;&nbsp;(5.19) | &nbsp;&nbsp;&nbsp;&nbsp;19.86 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $2140 | &nbsp;&nbsp;&nbsp;$2766 | &nbsp;&nbsp;&nbsp;$3478 | &nbsp;&nbsp;&nbsp;$3571 | &nbsp;&nbsp;&nbsp;$4618 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $13.03 | &nbsp;&nbsp;&nbsp;$12.69 | &nbsp;&nbsp;&nbsp;$13.43 | &nbsp;&nbsp;&nbsp;$15.06 | &nbsp;&nbsp;&nbsp;$12.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;$0.55 | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(1.10) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 |
| Total from investment operations | &nbsp;&nbsp;$1.05 | &nbsp;&nbsp;&nbsp;&nbsp;$0.77 | &nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;$2.68 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.53) | &nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;$(0.29) |
| From net realized gain | &nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | $(0.92) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.72) | &nbsp;&nbsp;&nbsp;$(1.08) | &nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | $13.16 | &nbsp;&nbsp;&nbsp;$13.03 | &nbsp;&nbsp;&nbsp;$12.69 | &nbsp;&nbsp;&nbsp;$13.43 | &nbsp;&nbsp;&nbsp;$15.06 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;(4.26) | &nbsp;&nbsp;&nbsp;&nbsp;21.10 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;3.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.08 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $3077 | &nbsp;&nbsp;&nbsp;$2846 | &nbsp;&nbsp;&nbsp;$2724 | &nbsp;&nbsp;&nbsp;$4104 | &nbsp;&nbsp;&nbsp;$3131 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2025 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $13.04 | &nbsp;&nbsp;&nbsp;$12.70 | &nbsp;&nbsp;&nbsp;$13.44 | &nbsp;&nbsp;&nbsp;$15.04 | &nbsp;&nbsp;&nbsp;$12.65 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;$0.09 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;(1.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.42 |
| Total from investment operations | &nbsp;&nbsp;$0.91 | &nbsp;&nbsp;&nbsp;&nbsp;$0.64 | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$2.51 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.39) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;$— |
| From net realized gain | &nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | $(0.78) | &nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;$(0.90) | &nbsp;&nbsp;&nbsp;$(0.12) |
| Net asset value, end of period (x) | $13.17 | &nbsp;&nbsp;&nbsp;$13.04 | &nbsp;&nbsp;&nbsp;$12.70 | &nbsp;&nbsp;&nbsp;$13.44 | &nbsp;&nbsp;&nbsp;$15.04 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.99 | &nbsp;&nbsp;&nbsp;&nbsp;(0.92) | &nbsp;&nbsp;&nbsp;&nbsp;(5.19) | &nbsp;&nbsp;&nbsp;&nbsp;19.86 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.67 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$337 | &nbsp;&nbsp;&nbsp;&nbsp;$333 | &nbsp;&nbsp;&nbsp;&nbsp;$347 | &nbsp;&nbsp;&nbsp;&nbsp;$310 | &nbsp;&nbsp;&nbsp;&nbsp;$374 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.96 | &nbsp;&nbsp;&nbsp;&nbsp;$12.61 | &nbsp;&nbsp;&nbsp;&nbsp;$13.35 | &nbsp;&nbsp;&nbsp;&nbsp;$14.95 | &nbsp;&nbsp;&nbsp;&nbsp;$12.69 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.37 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.71 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.61) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.58 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.85) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.99) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$13.08 | &nbsp;&nbsp;&nbsp;&nbsp;$12.96 | &nbsp;&nbsp;&nbsp;&nbsp;$12.61 | &nbsp;&nbsp;&nbsp;&nbsp;$13.35 | &nbsp;&nbsp;&nbsp;&nbsp;$14.95 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20.43 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $11897 | &nbsp;&nbsp;&nbsp;$12648 | &nbsp;&nbsp;&nbsp;$14322 | &nbsp;&nbsp;&nbsp;$16771 | &nbsp;&nbsp;&nbsp;$21994 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2025 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$12.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.73 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.63 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.26) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.87) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.68) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.38) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$13.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.98 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.18) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20.74 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.80 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $82363 | &nbsp;&nbsp;&nbsp;$106722 | &nbsp;&nbsp;&nbsp;$100312 | &nbsp;&nbsp;&nbsp;$109420 | &nbsp;&nbsp;&nbsp;$112826 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$13.08 | &nbsp;&nbsp;&nbsp;&nbsp;$12.73 | &nbsp;&nbsp;&nbsp;&nbsp;$13.47 | &nbsp;&nbsp;&nbsp;&nbsp;$15.09 | &nbsp;&nbsp;&nbsp;&nbsp;$12.81 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.40 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.68 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.72) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.06) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$13.22 | &nbsp;&nbsp;&nbsp;&nbsp;$13.08 | &nbsp;&nbsp;&nbsp;&nbsp;$12.73 | &nbsp;&nbsp;&nbsp;&nbsp;$13.47 | &nbsp;&nbsp;&nbsp;&nbsp;$15.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21.06 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.00 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $29836 | &nbsp;&nbsp;&nbsp;$29500 | &nbsp;&nbsp;&nbsp;$36419 | &nbsp;&nbsp;&nbsp;$34089 | &nbsp;&nbsp;&nbsp;$82037 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2025 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$13.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.82 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.10) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.70 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.31) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.12) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.93) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.74) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.10) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$13.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.06) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.22 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $189936 | &nbsp;&nbsp;&nbsp;$195108 | &nbsp;&nbsp;&nbsp;$158548 | &nbsp;&nbsp;&nbsp;$217171 | &nbsp;&nbsp;&nbsp;$228469 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2030 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$15.70 | &nbsp;&nbsp;&nbsp;&nbsp;$15.08 | &nbsp;&nbsp;&nbsp;&nbsp;$16.03 | &nbsp;&nbsp;&nbsp;&nbsp;$18.20 | &nbsp;&nbsp;&nbsp;&nbsp;$14.61 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.34) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.96 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.21 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.22 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.73) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.24) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.90) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.63) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$15.75 | &nbsp;&nbsp;&nbsp;&nbsp;$15.70 | &nbsp;&nbsp;&nbsp;&nbsp;$15.08 | &nbsp;&nbsp;&nbsp;&nbsp;$16.03 | &nbsp;&nbsp;&nbsp;&nbsp;$18.20 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.56 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $91791 | &nbsp;&nbsp;&nbsp;$91172 | &nbsp;&nbsp;&nbsp;$78198 | &nbsp;&nbsp;&nbsp;$78464 | &nbsp;&nbsp;&nbsp;$81398 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.55 | &nbsp;&nbsp;&nbsp;$14.92 | &nbsp;&nbsp;&nbsp;$15.82 | &nbsp;&nbsp;&nbsp;$17.96 | &nbsp;&nbsp;&nbsp;$14.41 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 | &nbsp;&nbsp;&nbsp;&nbsp;$0.55 | &nbsp;&nbsp;&nbsp;&nbsp;$0.13 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;(1.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.91 |
| Total from investment operations | &nbsp;&nbsp;$1.16 | &nbsp;&nbsp;&nbsp;&nbsp;$1.07 | &nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$4.04 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.34) | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;$(0.13) |
| From net realized gain | &nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | $(1.03) | &nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;$(0.74) | &nbsp;&nbsp;&nbsp;$(1.39) | &nbsp;&nbsp;&nbsp;$(0.49) |
| Net asset value, end of period (x) | $15.68 | &nbsp;&nbsp;&nbsp;$15.55 | &nbsp;&nbsp;&nbsp;$14.92 | &nbsp;&nbsp;&nbsp;$15.82 | &nbsp;&nbsp;&nbsp;$17.96 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.19 | &nbsp;&nbsp;&nbsp;&nbsp;(0.74) | &nbsp;&nbsp;&nbsp;&nbsp;(4.98) | &nbsp;&nbsp;&nbsp;&nbsp;28.24 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $1142 | &nbsp;&nbsp;&nbsp;$2224 | &nbsp;&nbsp;&nbsp;$3104 | &nbsp;&nbsp;&nbsp;$4398 | &nbsp;&nbsp;&nbsp;$6394 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2030 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.38 | &nbsp;&nbsp;&nbsp;$14.78 | &nbsp;&nbsp;&nbsp;$15.69 | &nbsp;&nbsp;&nbsp;&nbsp;$17.84 | &nbsp;&nbsp;&nbsp;&nbsp;$14.31 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.87 |
| Total from investment operations | &nbsp;&nbsp;$1.14 | &nbsp;&nbsp;&nbsp;&nbsp;$1.06 | &nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.74) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.01 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.42) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.12) |
| From net realized gain | &nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | $(1.11) | &nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.48) |
| Net asset value, end of period (x) | $15.41 | &nbsp;&nbsp;&nbsp;$15.38 | &nbsp;&nbsp;&nbsp;$14.78 | &nbsp;&nbsp;&nbsp;&nbsp;$15.69 | &nbsp;&nbsp;&nbsp;&nbsp;$17.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.21 | &nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.97) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28.24 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.85 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $7121 | &nbsp;&nbsp;&nbsp;$7387 | &nbsp;&nbsp;&nbsp;$8025 | &nbsp;&nbsp;&nbsp;$10573 | &nbsp;&nbsp;&nbsp;$12826 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.81 | &nbsp;&nbsp;&nbsp;$15.17 | &nbsp;&nbsp;&nbsp;$16.12 | &nbsp;&nbsp;&nbsp;$18.30 | &nbsp;&nbsp;&nbsp;$14.69 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.59 | &nbsp;&nbsp;&nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;$0.85 | &nbsp;&nbsp;&nbsp;&nbsp;$0.31 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.80 | &nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;(1.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.98 |
| Total from investment operations | &nbsp;&nbsp;$1.34 | &nbsp;&nbsp;&nbsp;&nbsp;$1.26 | &nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;$(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;$4.29 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.60) | &nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;$(0.78) | &nbsp;&nbsp;&nbsp;$(0.32) |
| From net realized gain | &nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | $(1.29) | &nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;$(0.93) | &nbsp;&nbsp;&nbsp;$(1.60) | &nbsp;&nbsp;&nbsp;$(0.68) |
| Net asset value, end of period (x) | $15.86 | &nbsp;&nbsp;&nbsp;$15.81 | &nbsp;&nbsp;&nbsp;$15.17 | &nbsp;&nbsp;&nbsp;$16.12 | &nbsp;&nbsp;&nbsp;$18.30 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;(4.02) | &nbsp;&nbsp;&nbsp;&nbsp;29.48 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;3.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.81 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.86 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $8189 | &nbsp;&nbsp;&nbsp;$5535 | &nbsp;&nbsp;&nbsp;$6146 | &nbsp;&nbsp;&nbsp;$6552 | &nbsp;&nbsp;&nbsp;$6274 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2030 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.59 | &nbsp;&nbsp;&nbsp;$14.97 | &nbsp;&nbsp;&nbsp;$15.89 | &nbsp;&nbsp;&nbsp;$18.05 | &nbsp;&nbsp;&nbsp;$14.43 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.58 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;(1.34) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.94 |
| Total from investment operations | &nbsp;&nbsp;$1.15 | &nbsp;&nbsp;&nbsp;&nbsp;$1.08 | &nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;$(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;$4.05 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.43) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.58) | &nbsp;&nbsp;&nbsp;$(0.07) |
| From net realized gain | &nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | $(1.12) | &nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;$(0.76) | &nbsp;&nbsp;&nbsp;$(1.40) | &nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | $15.62 | &nbsp;&nbsp;&nbsp;$15.59 | &nbsp;&nbsp;&nbsp;$14.97 | &nbsp;&nbsp;&nbsp;$15.89 | &nbsp;&nbsp;&nbsp;$18.05 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.24 | &nbsp;&nbsp;&nbsp;&nbsp;(0.73) | &nbsp;&nbsp;&nbsp;&nbsp;(5.00) | &nbsp;&nbsp;&nbsp;&nbsp;28.21 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.66 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $3103 | &nbsp;&nbsp;&nbsp;$3055 | &nbsp;&nbsp;&nbsp;$3347 | &nbsp;&nbsp;&nbsp;$4148 | &nbsp;&nbsp;&nbsp;$5636 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$15.57 | &nbsp;&nbsp;&nbsp;&nbsp;$14.94 | &nbsp;&nbsp;&nbsp;&nbsp;$15.88 | &nbsp;&nbsp;&nbsp;&nbsp;$18.04 | &nbsp;&nbsp;&nbsp;&nbsp;$14.47 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.20 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.31) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.94 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.17 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.66) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.14 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.68) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.21) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.85) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.50) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.57) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$15.61 | &nbsp;&nbsp;&nbsp;&nbsp;$15.57 | &nbsp;&nbsp;&nbsp;&nbsp;$14.94 | &nbsp;&nbsp;&nbsp;&nbsp;$15.88 | &nbsp;&nbsp;&nbsp;&nbsp;$18.04 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28.84 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.24 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $34541 | &nbsp;&nbsp;&nbsp;$35220 | &nbsp;&nbsp;&nbsp;$46256 | &nbsp;&nbsp;&nbsp;$51968 | &nbsp;&nbsp;&nbsp;$60402 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2030 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$15.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.57 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.31) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.95 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.21 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.73) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(1.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.90) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.63) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$15.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.15 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29.18 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.58 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $195870 | &nbsp;&nbsp;&nbsp;$220766 | &nbsp;&nbsp;&nbsp;$199271 | &nbsp;&nbsp;&nbsp;$196297 | &nbsp;&nbsp;&nbsp;$196178 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$15.87 | &nbsp;&nbsp;&nbsp;&nbsp;$15.22 | &nbsp;&nbsp;&nbsp;&nbsp;$16.17 | &nbsp;&nbsp;&nbsp;&nbsp;$18.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.30 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.01 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.27 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.31 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.77) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.31) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.28) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.93) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.67) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$15.93 | &nbsp;&nbsp;&nbsp;&nbsp;$15.87 | &nbsp;&nbsp;&nbsp;&nbsp;$15.22 | &nbsp;&nbsp;&nbsp;&nbsp;$16.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.34 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.03) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29.58 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;3.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.80 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $42040 | &nbsp;&nbsp;&nbsp;$38081 | &nbsp;&nbsp;&nbsp;$59570 | &nbsp;&nbsp;&nbsp;$58095 | &nbsp;&nbsp;&nbsp;$123740 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2030 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$15.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.98 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.32 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.80) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.82) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(1.31) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.96) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.69) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$15.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.33 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29.71 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.01 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $357861 | &nbsp;&nbsp;&nbsp;$382157 | &nbsp;&nbsp;&nbsp;$288629 | &nbsp;&nbsp;&nbsp;$316077 | &nbsp;&nbsp;&nbsp;$300098 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2035 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$16.96 | &nbsp;&nbsp;&nbsp;&nbsp;$15.67 | &nbsp;&nbsp;&nbsp;&nbsp;$16.63 | &nbsp;&nbsp;&nbsp;&nbsp;$18.63 | &nbsp;&nbsp;&nbsp;&nbsp;$13.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.04 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.73 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.23) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.92) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.44) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$17.51 | &nbsp;&nbsp;&nbsp;&nbsp;$16.96 | &nbsp;&nbsp;&nbsp;&nbsp;$15.67 | &nbsp;&nbsp;&nbsp;&nbsp;$16.63 | &nbsp;&nbsp;&nbsp;&nbsp;$18.63 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.84) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38.48 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.67 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.41 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $47516 | &nbsp;&nbsp;&nbsp;$42511 | &nbsp;&nbsp;&nbsp;$32421 | &nbsp;&nbsp;&nbsp;$29272 | &nbsp;&nbsp;&nbsp;$27770 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $16.91 | &nbsp;&nbsp;&nbsp;$15.59 | &nbsp;&nbsp;&nbsp;$16.52 | &nbsp;&nbsp;&nbsp;$18.50 | &nbsp;&nbsp;&nbsp;$13.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.69 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(1.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.99 |
| Total from investment operations | &nbsp;&nbsp;$1.33 | &nbsp;&nbsp;&nbsp;&nbsp;$1.59 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$5.10 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;$(0.10) |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | $(0.73) | &nbsp;&nbsp;&nbsp;$(0.27) | &nbsp;&nbsp;&nbsp;$(0.80) | &nbsp;&nbsp;&nbsp;$(1.28) | &nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | $17.51 | &nbsp;&nbsp;&nbsp;$16.91 | &nbsp;&nbsp;&nbsp;$15.59 | &nbsp;&nbsp;&nbsp;$16.52 | &nbsp;&nbsp;&nbsp;$18.50 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.85 | &nbsp;&nbsp;&nbsp;&nbsp;10.24 | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;(4.53) | &nbsp;&nbsp;&nbsp;&nbsp;37.44 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.65 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$334 | &nbsp;&nbsp;&nbsp;&nbsp;$697 | &nbsp;&nbsp;&nbsp;$1067 | &nbsp;&nbsp;&nbsp;$1370 | &nbsp;&nbsp;&nbsp;$1597 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2035 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $16.66 | &nbsp;&nbsp;&nbsp;$15.42 | &nbsp;&nbsp;&nbsp;$16.40 | &nbsp;&nbsp;&nbsp;$18.38 | &nbsp;&nbsp;&nbsp;$13.62 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 | &nbsp;&nbsp;&nbsp;&nbsp;$0.69 | &nbsp;&nbsp;&nbsp;&nbsp;$0.10 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.33 | &nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;(1.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.97 |
| Total from investment operations | &nbsp;&nbsp;$1.31 | &nbsp;&nbsp;&nbsp;&nbsp;$1.57 | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.68) | &nbsp;&nbsp;&nbsp;&nbsp;$5.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.37) | &nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;$(0.27) | &nbsp;&nbsp;&nbsp;$(0.72) | &nbsp;&nbsp;&nbsp;$(0.11) |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | $(0.77) | &nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;$(1.30) | &nbsp;&nbsp;&nbsp;$(0.31) |
| Net asset value, end of period (x) | $17.20 | &nbsp;&nbsp;&nbsp;$16.66 | &nbsp;&nbsp;&nbsp;$15.42 | &nbsp;&nbsp;&nbsp;$16.40 | &nbsp;&nbsp;&nbsp;$18.38 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.87 | &nbsp;&nbsp;&nbsp;&nbsp;10.27 | &nbsp;&nbsp;&nbsp;&nbsp;(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;(4.50) | &nbsp;&nbsp;&nbsp;&nbsp;37.40 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.63 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $5367 | &nbsp;&nbsp;&nbsp;$5285 | &nbsp;&nbsp;&nbsp;$4272 | &nbsp;&nbsp;&nbsp;$3413 | &nbsp;&nbsp;&nbsp;$3514 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $17.02 | &nbsp;&nbsp;&nbsp;$15.72 | &nbsp;&nbsp;&nbsp;$16.69 | &nbsp;&nbsp;&nbsp;$18.68 | &nbsp;&nbsp;&nbsp;$13.82 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.56 | &nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;$0.88 | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;(1.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.05 |
| Total from investment operations | &nbsp;&nbsp;$1.51 | &nbsp;&nbsp;&nbsp;&nbsp;$1.78 | &nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;$(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;$5.32 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.56) | &nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;$(0.26) |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | $(0.96) | &nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;$(1.49) | &nbsp;&nbsp;&nbsp;$(0.46) |
| Net asset value, end of period (x) | $17.57 | &nbsp;&nbsp;&nbsp;$17.02 | &nbsp;&nbsp;&nbsp;$15.72 | &nbsp;&nbsp;&nbsp;$16.69 | &nbsp;&nbsp;&nbsp;$18.68 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.88 | &nbsp;&nbsp;&nbsp;&nbsp;11.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;(3.55) | &nbsp;&nbsp;&nbsp;&nbsp;38.83 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;3.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.66 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $8645 | &nbsp;&nbsp;&nbsp;$8302 | &nbsp;&nbsp;&nbsp;$1953 | &nbsp;&nbsp;&nbsp;$1365 | &nbsp;&nbsp;&nbsp;$1267 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2035 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $16.88 | &nbsp;&nbsp;&nbsp;$15.61 | &nbsp;&nbsp;&nbsp;$16.59 | &nbsp;&nbsp;&nbsp;$18.59 | &nbsp;&nbsp;&nbsp;$13.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.72 | &nbsp;&nbsp;&nbsp;$(0.01) |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(1.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.10 |
| Total from investment operations | &nbsp;&nbsp;$1.33 | &nbsp;&nbsp;&nbsp;&nbsp;$1.59 | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$5.09 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.39) | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;$(0.27) | &nbsp;&nbsp;&nbsp;$(0.72) | &nbsp;&nbsp;&nbsp;$— |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | $(0.79) | &nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;$(1.30) | &nbsp;&nbsp;&nbsp;$(0.20) |
| Net asset value, end of period (x) | $17.42 | &nbsp;&nbsp;&nbsp;$16.88 | &nbsp;&nbsp;&nbsp;$15.61 | &nbsp;&nbsp;&nbsp;$16.59 | &nbsp;&nbsp;&nbsp;$18.59 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.85 | &nbsp;&nbsp;&nbsp;&nbsp;10.25 | &nbsp;&nbsp;&nbsp;&nbsp;(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;(4.52) | &nbsp;&nbsp;&nbsp;&nbsp;37.27 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.24 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.84 | &nbsp;&nbsp;&nbsp;&nbsp;(0.05) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $1358 | &nbsp;&nbsp;&nbsp;$1229 | &nbsp;&nbsp;&nbsp;&nbsp;$998 | &nbsp;&nbsp;&nbsp;&nbsp;$932 | &nbsp;&nbsp;&nbsp;&nbsp;$470 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$16.98 | &nbsp;&nbsp;&nbsp;&nbsp;$15.68 | &nbsp;&nbsp;&nbsp;&nbsp;$16.64 | &nbsp;&nbsp;&nbsp;&nbsp;$18.61 | &nbsp;&nbsp;&nbsp;&nbsp;$13.75 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.16 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.04 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.69 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.20 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.14) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.89) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.37) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$17.55 | &nbsp;&nbsp;&nbsp;&nbsp;$16.98 | &nbsp;&nbsp;&nbsp;&nbsp;$15.68 | &nbsp;&nbsp;&nbsp;&nbsp;$16.64 | &nbsp;&nbsp;&nbsp;&nbsp;$18.61 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38.06 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.97 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $13189 | &nbsp;&nbsp;&nbsp;$14018 | &nbsp;&nbsp;&nbsp;$14659 | &nbsp;&nbsp;&nbsp;$17075 | &nbsp;&nbsp;&nbsp;$20783 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2035 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$16.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.80 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.04 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.23) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$17.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.64 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.81) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38.44 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.40 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $155985 | &nbsp;&nbsp;&nbsp;$177887 | &nbsp;&nbsp;&nbsp;$140851 | &nbsp;&nbsp;&nbsp;$142758 | &nbsp;&nbsp;&nbsp;$141555 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$17.15 | &nbsp;&nbsp;&nbsp;&nbsp;$15.81 | &nbsp;&nbsp;&nbsp;&nbsp;$16.78 | &nbsp;&nbsp;&nbsp;&nbsp;$18.76 | &nbsp;&nbsp;&nbsp;&nbsp;$13.87 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.09 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.34 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.89) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.96) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.47) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.45) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$17.73 | &nbsp;&nbsp;&nbsp;&nbsp;$17.15 | &nbsp;&nbsp;&nbsp;&nbsp;$15.81 | &nbsp;&nbsp;&nbsp;&nbsp;$16.78 | &nbsp;&nbsp;&nbsp;&nbsp;$18.76 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38.82 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.56 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $25267 | &nbsp;&nbsp;&nbsp;$27498 | &nbsp;&nbsp;&nbsp;$45521 | &nbsp;&nbsp;&nbsp;$39766 | &nbsp;&nbsp;&nbsp;$89097 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2035 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$17.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$13.87 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.31 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.47) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.07 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.38 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.93) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.29) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.20) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.99) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.49) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$17.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.76 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39.08 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.86 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28 |
| Net assets at end of period (000 omitted) | $346605 | &nbsp;&nbsp;&nbsp;$315531 | &nbsp;&nbsp;&nbsp;$223670 | &nbsp;&nbsp;&nbsp;$237753 | &nbsp;&nbsp;&nbsp;$206449 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2040 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.65 | &nbsp;&nbsp;&nbsp;&nbsp;$17.01 | &nbsp;&nbsp;&nbsp;&nbsp;$18.03 | &nbsp;&nbsp;&nbsp;&nbsp;$20.33 | &nbsp;&nbsp;&nbsp;&nbsp;$14.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.86 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00(w) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.22) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.61) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.76) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.53) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.27 | &nbsp;&nbsp;&nbsp;&nbsp;$18.65 | &nbsp;&nbsp;&nbsp;&nbsp;$17.01 | &nbsp;&nbsp;&nbsp;&nbsp;$18.03 | &nbsp;&nbsp;&nbsp;&nbsp;$20.33 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41.38 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $73805 | &nbsp;&nbsp;&nbsp;$67188 | &nbsp;&nbsp;&nbsp;$51443 | &nbsp;&nbsp;&nbsp;$50245 | &nbsp;&nbsp;&nbsp;$56524 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.61 | &nbsp;&nbsp;&nbsp;$16.93 | &nbsp;&nbsp;&nbsp;$17.92 | &nbsp;&nbsp;&nbsp;$20.20 | &nbsp;&nbsp;&nbsp;$14.68 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.18 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.93 | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(1.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.81 |
| Total from investment operations | &nbsp;&nbsp;$1.46 | &nbsp;&nbsp;&nbsp;&nbsp;$2.11 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$5.89 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.32) | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.79) | &nbsp;&nbsp;&nbsp;$(0.06) |
| From net realized gain | &nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | $(0.80) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;$(1.58) | &nbsp;&nbsp;&nbsp;$(0.37) |
| Net asset value, end of period (x) | $19.27 | &nbsp;&nbsp;&nbsp;$18.61 | &nbsp;&nbsp;&nbsp;$16.93 | &nbsp;&nbsp;&nbsp;$17.92 | &nbsp;&nbsp;&nbsp;$20.20 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.80 | &nbsp;&nbsp;&nbsp;&nbsp;12.50 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(4.34) | &nbsp;&nbsp;&nbsp;&nbsp;40.36 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.04 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$956 | &nbsp;&nbsp;&nbsp;$1381 | &nbsp;&nbsp;&nbsp;$1972 | &nbsp;&nbsp;&nbsp;$2641 | &nbsp;&nbsp;&nbsp;$3527 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2040 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.23 | &nbsp;&nbsp;&nbsp;$16.64 | &nbsp;&nbsp;&nbsp;$17.64 | &nbsp;&nbsp;&nbsp;$19.94 | &nbsp;&nbsp;&nbsp;$14.48 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.20 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.77 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.86 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.73 |
| Total from investment operations | &nbsp;&nbsp;$1.43 | &nbsp;&nbsp;&nbsp;&nbsp;$2.06 | &nbsp;&nbsp;&nbsp;$(0.11) | &nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;$5.81 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.82) | &nbsp;&nbsp;&nbsp;$(0.04) |
| From net realized gain | &nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | $(0.84) | &nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;$(0.89) | &nbsp;&nbsp;&nbsp;$(1.61) | &nbsp;&nbsp;&nbsp;$(0.35) |
| Net asset value, end of period (x) | $18.82 | &nbsp;&nbsp;&nbsp;$18.23 | &nbsp;&nbsp;&nbsp;$16.64 | &nbsp;&nbsp;&nbsp;$17.64 | &nbsp;&nbsp;&nbsp;$19.94 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.80 | &nbsp;&nbsp;&nbsp;&nbsp;12.46 | &nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;(4.40) | &nbsp;&nbsp;&nbsp;&nbsp;40.39 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $5907 | &nbsp;&nbsp;&nbsp;$6208 | &nbsp;&nbsp;&nbsp;$6747 | &nbsp;&nbsp;&nbsp;$7809 | &nbsp;&nbsp;&nbsp;$8727 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.81 | &nbsp;&nbsp;&nbsp;&nbsp;$17.15 | &nbsp;&nbsp;&nbsp;$18.17 | &nbsp;&nbsp;&nbsp;$20.49 | &nbsp;&nbsp;&nbsp;$14.91 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;$1.04 | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.91 | &nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;(1.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.88 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 | &nbsp;&nbsp;&nbsp;$(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;$6.16 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;$(1.03) | &nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.05) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;$(1.07) | &nbsp;&nbsp;&nbsp;$(1.82) | &nbsp;&nbsp;&nbsp;$(0.58) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.44 | &nbsp;&nbsp;&nbsp;&nbsp;$18.81 | &nbsp;&nbsp;&nbsp;$17.15 | &nbsp;&nbsp;&nbsp;$18.17 | &nbsp;&nbsp;&nbsp;$20.49 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.68 | &nbsp;&nbsp;&nbsp;&nbsp;(3.41) | &nbsp;&nbsp;&nbsp;&nbsp;41.67 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.57 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $14339 | &nbsp;&nbsp;&nbsp;$13391 | &nbsp;&nbsp;&nbsp;$7846 | &nbsp;&nbsp;&nbsp;$5129 | &nbsp;&nbsp;&nbsp;$3870 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2040 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.46 | &nbsp;&nbsp;&nbsp;$16.84 | &nbsp;&nbsp;&nbsp;$17.82 | &nbsp;&nbsp;&nbsp;$20.13 | &nbsp;&nbsp;&nbsp;$14.61 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;$0.19 | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;$0.79 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.90 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(1.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.81 |
| Total from investment operations | &nbsp;&nbsp;$1.45 | &nbsp;&nbsp;&nbsp;&nbsp;$2.09 | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;$5.86 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.37) | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.83) | &nbsp;&nbsp;&nbsp;$(0.03) |
| From net realized gain | &nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | $(0.85) | &nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;$(1.62) | &nbsp;&nbsp;&nbsp;$(0.34) |
| Net asset value, end of period (x) | $19.06 | &nbsp;&nbsp;&nbsp;$18.46 | &nbsp;&nbsp;&nbsp;$16.84 | &nbsp;&nbsp;&nbsp;$17.82 | &nbsp;&nbsp;&nbsp;$20.13 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.82 | &nbsp;&nbsp;&nbsp;&nbsp;12.46 | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(4.36) | &nbsp;&nbsp;&nbsp;&nbsp;40.32 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.29 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $3135 | &nbsp;&nbsp;&nbsp;$3012 | &nbsp;&nbsp;&nbsp;$3063 | &nbsp;&nbsp;&nbsp;$4001 | &nbsp;&nbsp;&nbsp;$3965 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.53 | &nbsp;&nbsp;&nbsp;&nbsp;$16.90 | &nbsp;&nbsp;&nbsp;&nbsp;$17.91 | &nbsp;&nbsp;&nbsp;&nbsp;$20.21 | &nbsp;&nbsp;&nbsp;&nbsp;$14.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.16 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.82 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.19 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.92) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.16) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.71) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.47) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.15 | &nbsp;&nbsp;&nbsp;&nbsp;$18.53 | &nbsp;&nbsp;&nbsp;&nbsp;$16.90 | &nbsp;&nbsp;&nbsp;&nbsp;$17.91 | &nbsp;&nbsp;&nbsp;&nbsp;$20.21 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.89) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40.98 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.90 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $38622 | &nbsp;&nbsp;&nbsp;$40651 | &nbsp;&nbsp;&nbsp;$40810 | &nbsp;&nbsp;&nbsp;$44155 | &nbsp;&nbsp;&nbsp;$53097 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2040 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$18.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.80 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.84 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00(w) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.06 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.22) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.99) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.61) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.77) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.53) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$19.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.33 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41.32 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.26 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $192893 | &nbsp;&nbsp;&nbsp;$215273 | &nbsp;&nbsp;&nbsp;$176070 | &nbsp;&nbsp;&nbsp;$171589 | &nbsp;&nbsp;&nbsp;$156544 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.92 | &nbsp;&nbsp;&nbsp;&nbsp;$17.24 | &nbsp;&nbsp;&nbsp;&nbsp;$18.26 | &nbsp;&nbsp;&nbsp;&nbsp;$20.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.93 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.18 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.25) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.06) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.81) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.56) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.57 | &nbsp;&nbsp;&nbsp;&nbsp;$18.92 | &nbsp;&nbsp;&nbsp;&nbsp;$17.24 | &nbsp;&nbsp;&nbsp;&nbsp;$18.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.56 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41.74 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.40 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $40946 | &nbsp;&nbsp;&nbsp;$41884 | &nbsp;&nbsp;&nbsp;$51695 | &nbsp;&nbsp;&nbsp;$41621 | &nbsp;&nbsp;&nbsp;$105822 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2040 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$18.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.31 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.89 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.20 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.06) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.28) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.31) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(1.07) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.85) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.59) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$19.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.55 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41.92 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.69 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 |
| Net assets at end of period (000 omitted) | $394674 | &nbsp;&nbsp;&nbsp;$378212 | &nbsp;&nbsp;&nbsp;$273761 | &nbsp;&nbsp;&nbsp;$243550 | &nbsp;&nbsp;&nbsp;$221571 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(w) Per share amount was less than $0.01.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2045 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.49 | &nbsp;&nbsp;&nbsp;&nbsp;$16.73 | &nbsp;&nbsp;&nbsp;&nbsp;$17.72 | &nbsp;&nbsp;&nbsp;&nbsp;$19.84 | &nbsp;&nbsp;&nbsp;&nbsp;$14.08 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.97 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.16 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.19) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.92) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.99) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.63) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.18 | &nbsp;&nbsp;&nbsp;&nbsp;$18.49 | &nbsp;&nbsp;&nbsp;&nbsp;$16.73 | &nbsp;&nbsp;&nbsp;&nbsp;$17.72 | &nbsp;&nbsp;&nbsp;&nbsp;$19.84 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.10 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $36371 | &nbsp;&nbsp;&nbsp;$34162 | &nbsp;&nbsp;&nbsp;$23665 | &nbsp;&nbsp;&nbsp;$19763 | &nbsp;&nbsp;&nbsp;$18980 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.42 | &nbsp;&nbsp;&nbsp;$16.64 | &nbsp;&nbsp;&nbsp;$17.60 | &nbsp;&nbsp;&nbsp;$19.71 | &nbsp;&nbsp;&nbsp;$14.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.79 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.01 | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(1.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.93 |
| Total from investment operations | &nbsp;&nbsp;$1.46 | &nbsp;&nbsp;&nbsp;&nbsp;$2.15 | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;$5.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.26) | &nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;$(0.81) | &nbsp;&nbsp;&nbsp;$(0.06) |
| From net realized gain | &nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | $(0.72) | &nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;$(1.46) | &nbsp;&nbsp;&nbsp;$(0.27) |
| Net asset value, end of period (x) | $19.16 | &nbsp;&nbsp;&nbsp;$18.42 | &nbsp;&nbsp;&nbsp;$16.64 | &nbsp;&nbsp;&nbsp;$17.60 | &nbsp;&nbsp;&nbsp;$19.71 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.86 | &nbsp;&nbsp;&nbsp;&nbsp;12.99 | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(4.13) | &nbsp;&nbsp;&nbsp;&nbsp;42.95 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.26 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.30 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$264 | &nbsp;&nbsp;&nbsp;&nbsp;$435 | &nbsp;&nbsp;&nbsp;&nbsp;$676 | &nbsp;&nbsp;&nbsp;&nbsp;$736 | &nbsp;&nbsp;&nbsp;&nbsp;$930 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2045 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.20 | &nbsp;&nbsp;&nbsp;$16.49 | &nbsp;&nbsp;&nbsp;$17.50 | &nbsp;&nbsp;&nbsp;$19.62 | &nbsp;&nbsp;&nbsp;$13.91 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.98 | &nbsp;&nbsp;&nbsp;&nbsp;(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;(1.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.90 |
| Total from investment operations | &nbsp;&nbsp;$1.45 | &nbsp;&nbsp;&nbsp;&nbsp;$2.13 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;$5.95 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.31) | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;$(0.83) | &nbsp;&nbsp;&nbsp;$(0.03) |
| From net realized gain | &nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | $(0.77) | &nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.88) | &nbsp;&nbsp;&nbsp;$(1.48) | &nbsp;&nbsp;&nbsp;$(0.24) |
| Net asset value, end of period (x) | $18.88 | &nbsp;&nbsp;&nbsp;$18.20 | &nbsp;&nbsp;&nbsp;$16.49 | &nbsp;&nbsp;&nbsp;$17.50 | &nbsp;&nbsp;&nbsp;$19.62 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.87 | &nbsp;&nbsp;&nbsp;&nbsp;12.99 | &nbsp;&nbsp;&nbsp;&nbsp;(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;(4.13) | &nbsp;&nbsp;&nbsp;&nbsp;43.01 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.30 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $3064 | &nbsp;&nbsp;&nbsp;$3204 | &nbsp;&nbsp;&nbsp;$2642 | &nbsp;&nbsp;&nbsp;$2027 | &nbsp;&nbsp;&nbsp;$1943 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.61 | &nbsp;&nbsp;&nbsp;&nbsp;$16.84 | &nbsp;&nbsp;&nbsp;$17.82 | &nbsp;&nbsp;&nbsp;$19.94 | &nbsp;&nbsp;&nbsp;$14.15 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;$1.01 | &nbsp;&nbsp;&nbsp;&nbsp;$0.24 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.01 | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(1.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.00 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$6.24 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;$(1.03) | &nbsp;&nbsp;&nbsp;$(0.24) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;$(1.68) | &nbsp;&nbsp;&nbsp;$(0.45) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.32 | &nbsp;&nbsp;&nbsp;&nbsp;$18.61 | &nbsp;&nbsp;&nbsp;$16.84 | &nbsp;&nbsp;&nbsp;$17.82 | &nbsp;&nbsp;&nbsp;$19.94 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.66 | &nbsp;&nbsp;&nbsp;&nbsp;(3.17) | &nbsp;&nbsp;&nbsp;&nbsp;44.43 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.37 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $12335 | &nbsp;&nbsp;&nbsp;$11779 | &nbsp;&nbsp;&nbsp;$3190 | &nbsp;&nbsp;&nbsp;$2458 | &nbsp;&nbsp;&nbsp;$2145 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2045 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.41 | &nbsp;&nbsp;&nbsp;$16.68 | &nbsp;&nbsp;&nbsp;$17.67 | &nbsp;&nbsp;&nbsp;$19.74 | &nbsp;&nbsp;&nbsp;$13.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.69 | &nbsp;&nbsp;&nbsp;$(0.04) |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.00 | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(1.34) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.02 |
| Total from investment operations | &nbsp;&nbsp;$1.47 | &nbsp;&nbsp;&nbsp;&nbsp;$2.15 | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;$5.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;$(0.77) | &nbsp;&nbsp;&nbsp;$— |
| From net realized gain | &nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | $(0.79) | &nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.87) | &nbsp;&nbsp;&nbsp;$(1.42) | &nbsp;&nbsp;&nbsp;$(0.21) |
| Net asset value, end of period (x) | $19.09 | &nbsp;&nbsp;&nbsp;$18.41 | &nbsp;&nbsp;&nbsp;$16.68 | &nbsp;&nbsp;&nbsp;$17.67 | &nbsp;&nbsp;&nbsp;$19.74 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.91 | &nbsp;&nbsp;&nbsp;&nbsp;12.93 | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(4.13) | &nbsp;&nbsp;&nbsp;&nbsp;42.98 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.28 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.47 | &nbsp;&nbsp;&nbsp;&nbsp;(0.25) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$774 | &nbsp;&nbsp;&nbsp;&nbsp;$636 | &nbsp;&nbsp;&nbsp;&nbsp;$522 | &nbsp;&nbsp;&nbsp;&nbsp;$398 | &nbsp;&nbsp;&nbsp;&nbsp;$552 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.45 | &nbsp;&nbsp;&nbsp;$16.68 | &nbsp;&nbsp;&nbsp;&nbsp;$17.66 | &nbsp;&nbsp;&nbsp;&nbsp;$19.75 | &nbsp;&nbsp;&nbsp;&nbsp;$14.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.11 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.96 |
| Total from investment operations | &nbsp;&nbsp;$1.56 | &nbsp;&nbsp;&nbsp;&nbsp;$2.25 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.41) | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.90) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.11) |
| From net realized gain | &nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | $(0.87) | &nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.93) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.55) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) |
| Net asset value, end of period (x) | $19.14 | &nbsp;&nbsp;&nbsp;$18.45 | &nbsp;&nbsp;&nbsp;&nbsp;$16.68 | &nbsp;&nbsp;&nbsp;&nbsp;$17.66 | &nbsp;&nbsp;&nbsp;&nbsp;$19.75 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.39 | &nbsp;&nbsp;&nbsp;&nbsp;13.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43.65 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.67 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $9961 | &nbsp;&nbsp;&nbsp;$9755 | &nbsp;&nbsp;&nbsp;$10413 | &nbsp;&nbsp;&nbsp;$11276 | &nbsp;&nbsp;&nbsp;$15161 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2045 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$18.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.07 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.18 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.97 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.15 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.19) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$19.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.82 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.05 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.08 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $145617 | &nbsp;&nbsp;&nbsp;$165730 | &nbsp;&nbsp;&nbsp;$129497 | &nbsp;&nbsp;&nbsp;$127223 | &nbsp;&nbsp;&nbsp;$109034 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$18.65 | &nbsp;&nbsp;&nbsp;&nbsp;$16.86 | &nbsp;&nbsp;&nbsp;&nbsp;$17.84 | &nbsp;&nbsp;&nbsp;&nbsp;$19.94 | &nbsp;&nbsp;&nbsp;&nbsp;$14.14 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.02 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.23 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.22) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.65) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.37 | &nbsp;&nbsp;&nbsp;&nbsp;$18.65 | &nbsp;&nbsp;&nbsp;&nbsp;$16.86 | &nbsp;&nbsp;&nbsp;&nbsp;$17.84 | &nbsp;&nbsp;&nbsp;&nbsp;$19.94 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.17) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.39 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $20375 | &nbsp;&nbsp;&nbsp;$20246 | &nbsp;&nbsp;&nbsp;$23492 | &nbsp;&nbsp;&nbsp;$20668 | &nbsp;&nbsp;&nbsp;$68489 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2045 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$18.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.14 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.27 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.98 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.25 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.25) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.70) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.46) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$19.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.93 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2.99) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.58 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.11 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.56 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 |
| Net assets at end of period (000 omitted) | $287225 | &nbsp;&nbsp;&nbsp;$261476 | &nbsp;&nbsp;&nbsp;$197399 | &nbsp;&nbsp;&nbsp;$166911 | &nbsp;&nbsp;&nbsp;$140992 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2050 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$22.21 | &nbsp;&nbsp;&nbsp;&nbsp;$20.09 | &nbsp;&nbsp;&nbsp;&nbsp;$21.30 | &nbsp;&nbsp;&nbsp;&nbsp;$23.98 | &nbsp;&nbsp;&nbsp;&nbsp;$16.99 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.73) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.23 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.83 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.45 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.18) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.23) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.23) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.05) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.71) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(2.12) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.46) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$23.11 | &nbsp;&nbsp;&nbsp;&nbsp;$22.21 | &nbsp;&nbsp;&nbsp;&nbsp;$20.09 | &nbsp;&nbsp;&nbsp;&nbsp;$21.30 | &nbsp;&nbsp;&nbsp;&nbsp;$23.98 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.08 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $39991 | &nbsp;&nbsp;&nbsp;$37887 | &nbsp;&nbsp;&nbsp;$27752 | &nbsp;&nbsp;&nbsp;$22761 | &nbsp;&nbsp;&nbsp;$22708 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $21.96 | &nbsp;&nbsp;&nbsp;$19.80 | &nbsp;&nbsp;&nbsp;$20.96 | &nbsp;&nbsp;&nbsp;$23.62 | &nbsp;&nbsp;&nbsp;$16.75 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.95 | &nbsp;&nbsp;&nbsp;&nbsp;$0.06 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.51 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(1.70) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.11 |
| Total from investment operations | &nbsp;&nbsp;$1.74 | &nbsp;&nbsp;&nbsp;&nbsp;$2.63 | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$7.17 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.29) | &nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;$(0.07) |
| From net realized gain | &nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;(0.23) |
| Total distributions declared to shareholders | $(0.82) | &nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;$(1.91) | &nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | $22.88 | &nbsp;&nbsp;&nbsp;$21.96 | &nbsp;&nbsp;&nbsp;$19.80 | &nbsp;&nbsp;&nbsp;$20.96 | &nbsp;&nbsp;&nbsp;$23.62 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.88 | &nbsp;&nbsp;&nbsp;&nbsp;13.32 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(4.11) | &nbsp;&nbsp;&nbsp;&nbsp;43.04 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.26 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$459 | &nbsp;&nbsp;&nbsp;&nbsp;$650 | &nbsp;&nbsp;&nbsp;&nbsp;$987 | &nbsp;&nbsp;&nbsp;$1265 | &nbsp;&nbsp;&nbsp;$1727 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2050 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $21.68 | &nbsp;&nbsp;&nbsp;$19.63 | &nbsp;&nbsp;&nbsp;$20.83 | &nbsp;&nbsp;&nbsp;$23.49 | &nbsp;&nbsp;&nbsp;$16.65 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.91 | &nbsp;&nbsp;&nbsp;&nbsp;$0.06 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.46 | &nbsp;&nbsp;&nbsp;&nbsp;(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;(1.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.08 |
| Total from investment operations | &nbsp;&nbsp;$1.72 | &nbsp;&nbsp;&nbsp;&nbsp;$2.60 | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.74) | &nbsp;&nbsp;&nbsp;&nbsp;$7.14 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.34) | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.29) | &nbsp;&nbsp;&nbsp;$(0.98) | &nbsp;&nbsp;&nbsp;$(0.07) |
| From net realized gain | &nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;(0.23) |
| Total distributions declared to shareholders | $(0.87) | &nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;$(1.05) | &nbsp;&nbsp;&nbsp;$(1.92) | &nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | $22.53 | &nbsp;&nbsp;&nbsp;$21.68 | &nbsp;&nbsp;&nbsp;$19.63 | &nbsp;&nbsp;&nbsp;$20.83 | &nbsp;&nbsp;&nbsp;$23.49 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.88 | &nbsp;&nbsp;&nbsp;&nbsp;13.33 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(4.11) | &nbsp;&nbsp;&nbsp;&nbsp;43.12 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.26 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $4100 | &nbsp;&nbsp;&nbsp;$4204 | &nbsp;&nbsp;&nbsp;$3521 | &nbsp;&nbsp;&nbsp;$3223 | &nbsp;&nbsp;&nbsp;$3898 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $22.23 | &nbsp;&nbsp;&nbsp;$20.10 | &nbsp;&nbsp;&nbsp;$21.27 | &nbsp;&nbsp;&nbsp;$23.95 | &nbsp;&nbsp;&nbsp;$16.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.57 | &nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.60 | &nbsp;&nbsp;&nbsp;&nbsp;$1.18 | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.53 | &nbsp;&nbsp;&nbsp;&nbsp;(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;(1.68) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.21 |
| Total from investment operations | &nbsp;&nbsp;$2.02 | &nbsp;&nbsp;&nbsp;&nbsp;$2.89 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;$(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;$7.49 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.58) | &nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;$(1.24) | &nbsp;&nbsp;&nbsp;$(0.28) |
| From net realized gain | &nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;(0.23) |
| Total distributions declared to shareholders | $(1.11) | &nbsp;&nbsp;&nbsp;$(0.76) | &nbsp;&nbsp;&nbsp;$(1.21) | &nbsp;&nbsp;&nbsp;$(2.18) | &nbsp;&nbsp;&nbsp;$(0.51) |
| Net asset value, end of period (x) | $23.14 | &nbsp;&nbsp;&nbsp;$22.23 | &nbsp;&nbsp;&nbsp;$20.10 | &nbsp;&nbsp;&nbsp;$21.27 | &nbsp;&nbsp;&nbsp;$23.95 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;9.03 | &nbsp;&nbsp;&nbsp;&nbsp;14.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;(3.14) | &nbsp;&nbsp;&nbsp;&nbsp;44.49 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.26 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $7780 | &nbsp;&nbsp;&nbsp;$7824 | &nbsp;&nbsp;&nbsp;$2425 | &nbsp;&nbsp;&nbsp;$1445 | &nbsp;&nbsp;&nbsp;$1033 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2050 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $21.78 | &nbsp;&nbsp;&nbsp;$19.72 | &nbsp;&nbsp;&nbsp;$20.91 | &nbsp;&nbsp;&nbsp;$23.59 | &nbsp;&nbsp;&nbsp;$16.67 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.33 | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 | &nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;$0.95 | &nbsp;&nbsp;&nbsp;$(0.04) |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.46 | &nbsp;&nbsp;&nbsp;&nbsp;(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;(1.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.20 |
| Total from investment operations | &nbsp;&nbsp;$1.73 | &nbsp;&nbsp;&nbsp;&nbsp;$2.61 | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.74) | &nbsp;&nbsp;&nbsp;&nbsp;$7.16 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;$— |
| From net realized gain | &nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) |
| Total distributions declared to shareholders | $(0.89) | &nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;$(1.94) | &nbsp;&nbsp;&nbsp;$(0.24) |
| Net asset value, end of period (x) | $22.62 | &nbsp;&nbsp;&nbsp;$21.78 | &nbsp;&nbsp;&nbsp;$19.72 | &nbsp;&nbsp;&nbsp;$20.91 | &nbsp;&nbsp;&nbsp;$23.59 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.88 | &nbsp;&nbsp;&nbsp;&nbsp;13.32 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(4.08) | &nbsp;&nbsp;&nbsp;&nbsp;43.08 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.28 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.02 | &nbsp;&nbsp;&nbsp;&nbsp;(0.21) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$916 | &nbsp;&nbsp;&nbsp;&nbsp;$826 | &nbsp;&nbsp;&nbsp;&nbsp;$680 | &nbsp;&nbsp;&nbsp;&nbsp;$731 | &nbsp;&nbsp;&nbsp;&nbsp;$695 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$21.97 | &nbsp;&nbsp;&nbsp;&nbsp;$19.86 | &nbsp;&nbsp;&nbsp;&nbsp;$21.06 | &nbsp;&nbsp;&nbsp;&nbsp;$23.70 | &nbsp;&nbsp;&nbsp;&nbsp;$16.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.15 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.74 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.30 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.08) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.15) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.24) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.99) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.14) | &nbsp;&nbsp;&nbsp;&nbsp;$(2.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$22.85 | &nbsp;&nbsp;&nbsp;&nbsp;$21.97 | &nbsp;&nbsp;&nbsp;&nbsp;$19.86 | &nbsp;&nbsp;&nbsp;&nbsp;$21.06 | &nbsp;&nbsp;&nbsp;&nbsp;$23.70 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43.72 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;1.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $16547 | &nbsp;&nbsp;&nbsp;$15982 | &nbsp;&nbsp;&nbsp;$18388 | &nbsp;&nbsp;&nbsp;$19078 | &nbsp;&nbsp;&nbsp;$28781 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2050 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$22.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.86 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.67) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.17 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.39 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.17) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.23) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.23) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(1.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(2.11) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.46) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$22.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.79 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.08 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $147222 | &nbsp;&nbsp;&nbsp;$157398 | &nbsp;&nbsp;&nbsp;$121060 | &nbsp;&nbsp;&nbsp;$118076 | &nbsp;&nbsp;&nbsp;$113346 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$22.24 | &nbsp;&nbsp;&nbsp;&nbsp;$20.10 | &nbsp;&nbsp;&nbsp;&nbsp;$21.31 | &nbsp;&nbsp;&nbsp;&nbsp;$23.97 | &nbsp;&nbsp;&nbsp;&nbsp;$16.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.24 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$2.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.50 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.24) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(1.10) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.25) | &nbsp;&nbsp;&nbsp;&nbsp;$(2.14) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.50) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$23.15 | &nbsp;&nbsp;&nbsp;&nbsp;$22.24 | &nbsp;&nbsp;&nbsp;&nbsp;$20.10 | &nbsp;&nbsp;&nbsp;&nbsp;$21.31 | &nbsp;&nbsp;&nbsp;&nbsp;$23.97 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.16) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.52 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.28 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $34359 | &nbsp;&nbsp;&nbsp;$38189 | &nbsp;&nbsp;&nbsp;$44972 | &nbsp;&nbsp;&nbsp;$24207 | &nbsp;&nbsp;&nbsp;$71368 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2050 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$22.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$16.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.72) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.20 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$2.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.52 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.61) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.30) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.23) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(1.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.78) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(2.21) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.53) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$23.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$22.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$20.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23.96 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2.97) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.70 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.12 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.54 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $305358 | &nbsp;&nbsp;&nbsp;$284955 | &nbsp;&nbsp;&nbsp;$193767 | &nbsp;&nbsp;&nbsp;$147729 | &nbsp;&nbsp;&nbsp;$121495 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2055 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$19.12 | &nbsp;&nbsp;&nbsp;&nbsp;$17.30 | &nbsp;&nbsp;&nbsp;&nbsp;$18.30 | &nbsp;&nbsp;&nbsp;&nbsp;$20.42 | &nbsp;&nbsp;&nbsp;&nbsp;$14.47 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.15 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.34 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.85) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.61) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.62) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.95 | &nbsp;&nbsp;&nbsp;&nbsp;$19.12 | &nbsp;&nbsp;&nbsp;&nbsp;$17.30 | &nbsp;&nbsp;&nbsp;&nbsp;$18.30 | &nbsp;&nbsp;&nbsp;&nbsp;$20.42 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.11 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;1.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $24603 | &nbsp;&nbsp;&nbsp;$26236 | &nbsp;&nbsp;&nbsp;$19429 | &nbsp;&nbsp;&nbsp;$15144 | &nbsp;&nbsp;&nbsp;$14314 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $19.10 | &nbsp;&nbsp;&nbsp;$17.25 | &nbsp;&nbsp;&nbsp;$18.22 | &nbsp;&nbsp;&nbsp;$20.33 | &nbsp;&nbsp;&nbsp;$14.41 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 | &nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.82 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.17 | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(1.48) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.13 |
| Total from investment operations | &nbsp;&nbsp;$1.52 | &nbsp;&nbsp;&nbsp;&nbsp;$2.28 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.66) | &nbsp;&nbsp;&nbsp;&nbsp;$6.18 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.28) | &nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.85) | &nbsp;&nbsp;&nbsp;$(0.07) |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | $(0.68) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;$(1.45) | &nbsp;&nbsp;&nbsp;$(0.26) |
| Net asset value, end of period (x) | $19.94 | &nbsp;&nbsp;&nbsp;$19.10 | &nbsp;&nbsp;&nbsp;$17.25 | &nbsp;&nbsp;&nbsp;$18.22 | &nbsp;&nbsp;&nbsp;$20.33 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.92 | &nbsp;&nbsp;&nbsp;&nbsp;13.32 | &nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;(4.09) | &nbsp;&nbsp;&nbsp;&nbsp;43.06 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$291 | &nbsp;&nbsp;&nbsp;&nbsp;$383 | &nbsp;&nbsp;&nbsp;&nbsp;$502 | &nbsp;&nbsp;&nbsp;&nbsp;$590 | &nbsp;&nbsp;&nbsp;&nbsp;$713 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2055 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.85 | &nbsp;&nbsp;&nbsp;$17.06 | &nbsp;&nbsp;&nbsp;$18.06 | &nbsp;&nbsp;&nbsp;$20.17 | &nbsp;&nbsp;&nbsp;$14.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.82 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.14 | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(1.47) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.08 |
| Total from investment operations | &nbsp;&nbsp;$1.50 | &nbsp;&nbsp;&nbsp;&nbsp;$2.26 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;$6.13 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.31) | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;$(0.06) |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | $(0.71) | &nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;$(0.87) | &nbsp;&nbsp;&nbsp;$(1.46) | &nbsp;&nbsp;&nbsp;$(0.25) |
| Net asset value, end of period (x) | $19.64 | &nbsp;&nbsp;&nbsp;$18.85 | &nbsp;&nbsp;&nbsp;$17.06 | &nbsp;&nbsp;&nbsp;$18.06 | &nbsp;&nbsp;&nbsp;$20.17 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.87 | &nbsp;&nbsp;&nbsp;&nbsp;13.34 | &nbsp;&nbsp;&nbsp;&nbsp;(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;(4.06) | &nbsp;&nbsp;&nbsp;&nbsp;43.08 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.29 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $2843 | &nbsp;&nbsp;&nbsp;$2889 | &nbsp;&nbsp;&nbsp;$2588 | &nbsp;&nbsp;&nbsp;$2426 | &nbsp;&nbsp;&nbsp;$2585 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $19.16 | &nbsp;&nbsp;&nbsp;$17.33 | &nbsp;&nbsp;&nbsp;$18.33 | &nbsp;&nbsp;&nbsp;$20.45 | &nbsp;&nbsp;&nbsp;$14.49 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$1.00 | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.14 | &nbsp;&nbsp;&nbsp;&nbsp;(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;(1.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.14 |
| Total from investment operations | &nbsp;&nbsp;$1.72 | &nbsp;&nbsp;&nbsp;&nbsp;$2.48 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;$6.39 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.51) | &nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;$(1.07) | &nbsp;&nbsp;&nbsp;$(0.24) |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | $(0.91) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;$(1.67) | &nbsp;&nbsp;&nbsp;$(0.43) |
| Net asset value, end of period (x) | $19.97 | &nbsp;&nbsp;&nbsp;$19.16 | &nbsp;&nbsp;&nbsp;$17.33 | &nbsp;&nbsp;&nbsp;$18.33 | &nbsp;&nbsp;&nbsp;$20.45 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.93 | &nbsp;&nbsp;&nbsp;&nbsp;14.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.62 | &nbsp;&nbsp;&nbsp;&nbsp;(3.13) | &nbsp;&nbsp;&nbsp;&nbsp;44.42 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.39 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $3999 | &nbsp;&nbsp;&nbsp;$3821 | &nbsp;&nbsp;&nbsp;$1314 | &nbsp;&nbsp;&nbsp;&nbsp;$512 | &nbsp;&nbsp;&nbsp;&nbsp;$434 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2055 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $18.89 | &nbsp;&nbsp;&nbsp;$17.12 | &nbsp;&nbsp;&nbsp;$18.14 | &nbsp;&nbsp;&nbsp;$20.26 | &nbsp;&nbsp;&nbsp;$14.30 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;$0.13 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.81 | &nbsp;&nbsp;&nbsp;$(0.06) |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.13 | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.21 |
| Total from investment operations | &nbsp;&nbsp;$1.50 | &nbsp;&nbsp;&nbsp;&nbsp;$2.26 | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;$6.15 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;$(0.87) | &nbsp;&nbsp;&nbsp;$— |
| From net realized gain | &nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | $(0.73) | &nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;$(0.89) | &nbsp;&nbsp;&nbsp;$(1.47) | &nbsp;&nbsp;&nbsp;$(0.19) |
| Net asset value, end of period (x) | $19.66 | &nbsp;&nbsp;&nbsp;$18.89 | &nbsp;&nbsp;&nbsp;$17.12 | &nbsp;&nbsp;&nbsp;$18.14 | &nbsp;&nbsp;&nbsp;$20.26 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.87 | &nbsp;&nbsp;&nbsp;&nbsp;13.34 | &nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;(4.07) | &nbsp;&nbsp;&nbsp;&nbsp;43.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.39 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.95 | &nbsp;&nbsp;&nbsp;&nbsp;(0.34) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $2216 | &nbsp;&nbsp;&nbsp;$1684 | &nbsp;&nbsp;&nbsp;$1070 | &nbsp;&nbsp;&nbsp;&nbsp;$701 | &nbsp;&nbsp;&nbsp;&nbsp;$663 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$19.13 | &nbsp;&nbsp;&nbsp;$17.30 | &nbsp;&nbsp;&nbsp;$18.29 | &nbsp;&nbsp;&nbsp;$20.35 | &nbsp;&nbsp;&nbsp;&nbsp;$14.39 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.11 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.16 | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(1.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.16 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.62 | &nbsp;&nbsp;&nbsp;&nbsp;$2.38 | &nbsp;&nbsp;&nbsp;$(0.04) | &nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.12) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.81) | &nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;$(0.95) | &nbsp;&nbsp;&nbsp;$(1.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.31) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$19.94 | &nbsp;&nbsp;&nbsp;$19.13 | &nbsp;&nbsp;&nbsp;$17.30 | &nbsp;&nbsp;&nbsp;$18.29 | &nbsp;&nbsp;&nbsp;&nbsp;$20.35 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.43 | &nbsp;&nbsp;&nbsp;&nbsp;13.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.10 | &nbsp;&nbsp;&nbsp;&nbsp;(3.56) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43.78 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.81 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.81 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.87 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;1.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.64 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $11094 | &nbsp;&nbsp;&nbsp;$9538 | &nbsp;&nbsp;&nbsp;$9003 | &nbsp;&nbsp;&nbsp;$8981 | &nbsp;&nbsp;&nbsp;$17589 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2055 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$19.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.31 | &nbsp;&nbsp;&nbsp;&nbsp;$18.31 | &nbsp;&nbsp;&nbsp;&nbsp;$20.42 | &nbsp;&nbsp;&nbsp;&nbsp;$14.47 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.15 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.34 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.61) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.62) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$19.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.13 | &nbsp;&nbsp;&nbsp;&nbsp;$17.31 | &nbsp;&nbsp;&nbsp;&nbsp;$18.31 | &nbsp;&nbsp;&nbsp;&nbsp;$20.42 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.10 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $105695 | &nbsp;&nbsp;&nbsp;$107463 | &nbsp;&nbsp;&nbsp;$76726 | &nbsp;&nbsp;&nbsp;$73743 | &nbsp;&nbsp;&nbsp;$65613 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$19.34 | &nbsp;&nbsp;&nbsp;&nbsp;$17.47 | &nbsp;&nbsp;&nbsp;&nbsp;$18.47 | &nbsp;&nbsp;&nbsp;&nbsp;$20.56 | &nbsp;&nbsp;&nbsp;&nbsp;$14.55 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.21 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.43 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.23) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.63) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.64) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.42) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$20.18 | &nbsp;&nbsp;&nbsp;&nbsp;$19.34 | &nbsp;&nbsp;&nbsp;&nbsp;$17.47 | &nbsp;&nbsp;&nbsp;&nbsp;$18.47 | &nbsp;&nbsp;&nbsp;&nbsp;$20.56 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.49 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $12635 | &nbsp;&nbsp;&nbsp;$12123 | &nbsp;&nbsp;&nbsp;$18660 | &nbsp;&nbsp;&nbsp;$14606 | &nbsp;&nbsp;&nbsp;$38374 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2055 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$19.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$18.46 | &nbsp;&nbsp;&nbsp;&nbsp;$20.58 | &nbsp;&nbsp;&nbsp;&nbsp;$14.56 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.18 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.46 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.10) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.19) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.07) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.70) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$20.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$19.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17.46 | &nbsp;&nbsp;&nbsp;&nbsp;$18.46 | &nbsp;&nbsp;&nbsp;&nbsp;$20.58 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2.99) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.75 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.54 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 |
| Net assets at end of period (000 omitted) | $218596 | &nbsp;&nbsp;&nbsp;$193673 | &nbsp;&nbsp;&nbsp;$133208 | &nbsp;&nbsp;&nbsp;$87462 | &nbsp;&nbsp;&nbsp;$60705 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2060 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$15.37 | &nbsp;&nbsp;&nbsp;&nbsp;$13.87 | &nbsp;&nbsp;&nbsp;&nbsp;$14.54 | &nbsp;&nbsp;&nbsp;$15.99 | &nbsp;&nbsp;&nbsp;$11.25 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;(1.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.82 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00(w) | &nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$4.97 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;$(0.79) | &nbsp;&nbsp;&nbsp;$(0.14) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;$(1.01) | &nbsp;&nbsp;&nbsp;$(0.23) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$16.08 | &nbsp;&nbsp;&nbsp;&nbsp;$15.37 | &nbsp;&nbsp;&nbsp;&nbsp;$13.87 | &nbsp;&nbsp;&nbsp;$14.54 | &nbsp;&nbsp;&nbsp;$15.99 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;(3.51) | &nbsp;&nbsp;&nbsp;&nbsp;44.39 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.08 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.06 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | $18302 | &nbsp;&nbsp;&nbsp;$15598 | &nbsp;&nbsp;&nbsp;$11316 | &nbsp;&nbsp;&nbsp;$8023 | &nbsp;&nbsp;&nbsp;$5584 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class B** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.40 | &nbsp;&nbsp;&nbsp;$13.87 | &nbsp;&nbsp;&nbsp;$14.52 | &nbsp;&nbsp;&nbsp;$15.95 | &nbsp;&nbsp;&nbsp;$11.24 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;$0.19 | &nbsp;&nbsp;&nbsp;&nbsp;$0.65 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.75 | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;(1.21) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.80 |
| Total from investment operations | &nbsp;&nbsp;$1.34 | &nbsp;&nbsp;&nbsp;&nbsp;$1.83 | &nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$4.84 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.32) | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;$(0.04) |
| From net realized gain | &nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | $(0.58) | &nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;$(0.87) | &nbsp;&nbsp;&nbsp;$(0.13) |
| Net asset value, end of period (x) | $16.16 | &nbsp;&nbsp;&nbsp;$15.40 | &nbsp;&nbsp;&nbsp;$13.87 | &nbsp;&nbsp;&nbsp;$14.52 | &nbsp;&nbsp;&nbsp;$15.95 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.62 | &nbsp;&nbsp;&nbsp;&nbsp;13.27 | &nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;(4.15) | &nbsp;&nbsp;&nbsp;&nbsp;43.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.83 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$146 | &nbsp;&nbsp;&nbsp;&nbsp;$150 | &nbsp;&nbsp;&nbsp;&nbsp;$168 | &nbsp;&nbsp;&nbsp;&nbsp;$179 | &nbsp;&nbsp;&nbsp;&nbsp;$191 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2060 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.21 | &nbsp;&nbsp;&nbsp;$13.74 | &nbsp;&nbsp;&nbsp;$14.41 | &nbsp;&nbsp;&nbsp;$15.86 | &nbsp;&nbsp;&nbsp;$11.18 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.10 | &nbsp;&nbsp;&nbsp;&nbsp;$0.19 | &nbsp;&nbsp;&nbsp;&nbsp;$0.67 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.71 | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;(1.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.78 |
| Total from investment operations | &nbsp;&nbsp;$1.20 | &nbsp;&nbsp;&nbsp;&nbsp;$1.81 | &nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$4.83 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.25) | &nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;$(0.18) | &nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;$(0.06) |
| From net realized gain | &nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | $(0.51) | &nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;$(0.89) | &nbsp;&nbsp;&nbsp;$(0.15) |
| Net asset value, end of period (x) | $15.90 | &nbsp;&nbsp;&nbsp;$15.21 | &nbsp;&nbsp;&nbsp;$13.74 | &nbsp;&nbsp;&nbsp;$14.41 | &nbsp;&nbsp;&nbsp;$15.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.79 | &nbsp;&nbsp;&nbsp;&nbsp;13.30 | &nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;(4.20) | &nbsp;&nbsp;&nbsp;&nbsp;43.28 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.83 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | $1677 | &nbsp;&nbsp;&nbsp;$1468 | &nbsp;&nbsp;&nbsp;$1091 | &nbsp;&nbsp;&nbsp;&nbsp;$891 | &nbsp;&nbsp;&nbsp;&nbsp;$761 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.51 | &nbsp;&nbsp;&nbsp;$13.99 | &nbsp;&nbsp;&nbsp;$14.65 | &nbsp;&nbsp;&nbsp;$16.09 | &nbsp;&nbsp;&nbsp;$11.32 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.33 | &nbsp;&nbsp;&nbsp;&nbsp;$0.85 | &nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;1.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.73 | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;(1.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.84 |
| Total from investment operations | &nbsp;&nbsp;$1.39 | &nbsp;&nbsp;&nbsp;&nbsp;$1.99 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$5.03 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.40) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.82) | &nbsp;&nbsp;&nbsp;$(0.17) |
| From net realized gain | &nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | $(0.66) | &nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;$(1.04) | &nbsp;&nbsp;&nbsp;$(0.26) |
| Net asset value, end of period (x) | $16.24 | &nbsp;&nbsp;&nbsp;$15.51 | &nbsp;&nbsp;&nbsp;$13.99 | &nbsp;&nbsp;&nbsp;$14.65 | &nbsp;&nbsp;&nbsp;$16.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.92 | &nbsp;&nbsp;&nbsp;&nbsp;14.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.64 | &nbsp;&nbsp;&nbsp;&nbsp;(3.25) | &nbsp;&nbsp;&nbsp;&nbsp;44.66 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.33 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$896 | &nbsp;&nbsp;&nbsp;&nbsp;$576 | &nbsp;&nbsp;&nbsp;&nbsp;$396 | &nbsp;&nbsp;&nbsp;&nbsp;$295 | &nbsp;&nbsp;&nbsp;&nbsp;$232 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2060 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.47 | &nbsp;&nbsp;&nbsp;$13.95 | &nbsp;&nbsp;&nbsp;$14.57 | &nbsp;&nbsp;&nbsp;$16.01 | &nbsp;&nbsp;&nbsp;$11.28 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.21 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.65 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.75 | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;(1.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.82 |
| Total from investment operations | &nbsp;&nbsp;$1.34 | &nbsp;&nbsp;&nbsp;&nbsp;$1.96 | &nbsp;&nbsp;&nbsp;$(0.03) | &nbsp;&nbsp;&nbsp;$(0.57) | &nbsp;&nbsp;&nbsp;&nbsp;$4.86 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.65) | &nbsp;&nbsp;&nbsp;$(0.04) |
| From net realized gain | &nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | $(0.62) | &nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;$(0.87) | &nbsp;&nbsp;&nbsp;$(0.13) |
| Net asset value, end of period (x) | $16.19 | &nbsp;&nbsp;&nbsp;$15.47 | &nbsp;&nbsp;&nbsp;$13.95 | &nbsp;&nbsp;&nbsp;$14.57 | &nbsp;&nbsp;&nbsp;$16.01 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.61 | &nbsp;&nbsp;&nbsp;&nbsp;14.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;(4.20) | &nbsp;&nbsp;&nbsp;&nbsp;43.20 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.83 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$102 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$86 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.36 | &nbsp;&nbsp;&nbsp;$13.86 | &nbsp;&nbsp;&nbsp;$14.52 | &nbsp;&nbsp;&nbsp;$15.97 | &nbsp;&nbsp;&nbsp;$11.25 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;$0.18 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.75 | &nbsp;&nbsp;&nbsp;&nbsp;$0.13 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.73 | &nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;(1.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.80 |
| Total from investment operations | &nbsp;&nbsp;$1.29 | &nbsp;&nbsp;&nbsp;&nbsp;$1.91 | &nbsp;&nbsp;&nbsp;$(0.04) | &nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$4.93 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.75) | &nbsp;&nbsp;&nbsp;$(0.12) |
| From net realized gain | &nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | $(0.59) | &nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;$(0.21) |
| Net asset value, end of period (x) | $16.06 | &nbsp;&nbsp;&nbsp;$15.36 | &nbsp;&nbsp;&nbsp;$13.86 | &nbsp;&nbsp;&nbsp;$14.52 | &nbsp;&nbsp;&nbsp;$15.97 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.32 | &nbsp;&nbsp;&nbsp;&nbsp;13.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.04 | &nbsp;&nbsp;&nbsp;&nbsp;(3.73) | &nbsp;&nbsp;&nbsp;&nbsp;43.97 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.04 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.33 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | $3988 | &nbsp;&nbsp;&nbsp;$3262 | &nbsp;&nbsp;&nbsp;$2203 | &nbsp;&nbsp;&nbsp;$2107 | &nbsp;&nbsp;&nbsp;$1580 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2060 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$15.39 | &nbsp;&nbsp;&nbsp;&nbsp;$13.89 | &nbsp;&nbsp;&nbsp;&nbsp;$14.56 | &nbsp;&nbsp;&nbsp;&nbsp;$16.00 | &nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.16 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.30) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.21) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.81 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$1.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$1.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00(w) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$4.97 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.78) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.15) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.67) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.24) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$16.11 | &nbsp;&nbsp;&nbsp;&nbsp;$15.39 | &nbsp;&nbsp;&nbsp;&nbsp;$13.89 | &nbsp;&nbsp;&nbsp;&nbsp;$14.56 | &nbsp;&nbsp;&nbsp;&nbsp;$16.00 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.28 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.07 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.12 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | $66823 | &nbsp;&nbsp;&nbsp;$63579 | &nbsp;&nbsp;&nbsp;$43119 | &nbsp;&nbsp;&nbsp;$28505 | &nbsp;&nbsp;&nbsp;$17477 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $15.50 | &nbsp;&nbsp;&nbsp;$13.97 | &nbsp;&nbsp;&nbsp;$14.64 | &nbsp;&nbsp;&nbsp;$16.07 | &nbsp;&nbsp;&nbsp;$11.31 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;$0.57 | &nbsp;&nbsp;&nbsp;&nbsp;$0.18 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.77 | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;(0.98) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.84 |
| Total from investment operations | &nbsp;&nbsp;$1.39 | &nbsp;&nbsp;&nbsp;&nbsp;$2.00 | &nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$5.02 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.40) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.80) | &nbsp;&nbsp;&nbsp;$(0.17) |
| From net realized gain | &nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | $(0.66) | &nbsp;&nbsp;&nbsp;$(0.47) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;$(1.02) | &nbsp;&nbsp;&nbsp;$(0.26) |
| Net asset value, end of period (x) | $16.23 | &nbsp;&nbsp;&nbsp;$15.50 | &nbsp;&nbsp;&nbsp;$13.97 | &nbsp;&nbsp;&nbsp;$14.64 | &nbsp;&nbsp;&nbsp;$16.07 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.91 | &nbsp;&nbsp;&nbsp;&nbsp;14.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;(3.31) | &nbsp;&nbsp;&nbsp;&nbsp;44.61 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.83 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.33 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | $5668 | &nbsp;&nbsp;&nbsp;$4458 | &nbsp;&nbsp;&nbsp;$7987 | &nbsp;&nbsp;&nbsp;$3227 | &nbsp;&nbsp;&nbsp;$8871 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2060 Fund - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$15.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.01 | &nbsp;&nbsp;&nbsp;&nbsp;$14.67 | &nbsp;&nbsp;&nbsp;&nbsp;$16.11 | &nbsp;&nbsp;&nbsp;&nbsp;$11.33 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.85 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.06 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.84) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.19) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.09) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.69) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.49) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.72) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.06) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$16.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.55 | &nbsp;&nbsp;&nbsp;&nbsp;$14.01 | &nbsp;&nbsp;&nbsp;&nbsp;$14.67 | &nbsp;&nbsp;&nbsp;&nbsp;$16.11 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14.65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.15) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44.87 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21 |
| Net assets at end of period (000 omitted) | $120351 | &nbsp;&nbsp;&nbsp;$103606 | &nbsp;&nbsp;&nbsp;$60227 | &nbsp;&nbsp;&nbsp;$35897 | &nbsp;&nbsp;&nbsp;$25148 |

---

(d) Per share data is based on average shares outstanding.

(h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the
fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may
own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.

(l) The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.

(r) Certain expenses have been reduced without which performance would have been lower.

(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

(t) Total returns do not include any applicable sales charges.

(w) Per share amount was less than $0.01.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting
principles required at period end for financial reporting purposes.

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2065 Fund
**The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.**

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class A** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;$9.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.68 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.18 | &nbsp;&nbsp;&nbsp;&nbsp;$0.21 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.05 | &nbsp;&nbsp;&nbsp;&nbsp;(0.17)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.12) |
| Total from investment operations | &nbsp;&nbsp;$0.82 | &nbsp;&nbsp;&nbsp;&nbsp;$1.19 | &nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;$(0.91) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.22) | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.18) | &nbsp;&nbsp;&nbsp;$(0.41) |
| From net realized gain | &nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | $(0.34) | &nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$9.87 | &nbsp;&nbsp;&nbsp;&nbsp;$9.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.68 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.67 | &nbsp;&nbsp;&nbsp;&nbsp;14.19 | &nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;(9.56)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.25 | &nbsp;&nbsp;&nbsp;&nbsp;10.09 | &nbsp;&nbsp;&nbsp;&nbsp;11.82(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.12(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.55 | &nbsp;&nbsp;&nbsp;&nbsp;2.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.44(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | $2103 | &nbsp;&nbsp;&nbsp;$1332 | &nbsp;&nbsp;&nbsp;&nbsp;$539 | &nbsp;&nbsp;&nbsp;&nbsp;$240 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class C** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | $9.36 | &nbsp;&nbsp;&nbsp;&nbsp;$8.37 | &nbsp;&nbsp;&nbsp;&nbsp;$8.67 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.15 | &nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;$0.40 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;1.07 | &nbsp;&nbsp;&nbsp;&nbsp;(0.18)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.35) |
| Total from investment operations | $0.73 | &nbsp;&nbsp;&nbsp;&nbsp;$1.13 | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;$(0.95) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.16) | &nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.38) |
| From net realized gain | &nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | $(0.28) | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;$(0.38) |
| Net asset value, end of period (x) | $9.81 | &nbsp;&nbsp;&nbsp;&nbsp;$9.36 | &nbsp;&nbsp;&nbsp;&nbsp;$8.37 | &nbsp;&nbsp;&nbsp;&nbsp;$8.67 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.77 | &nbsp;&nbsp;&nbsp;&nbsp;13.47 | &nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;(9.93)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;2.20 | &nbsp;&nbsp;&nbsp;&nbsp;3.04 | &nbsp;&nbsp;&nbsp;&nbsp;11.64 | &nbsp;&nbsp;&nbsp;&nbsp;13.66(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;0.97 | &nbsp;&nbsp;&nbsp;&nbsp;0.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.87(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.35(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$303 | &nbsp;&nbsp;&nbsp;&nbsp;$183 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$52 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2065 Fund - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class I** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | $9.43 | &nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;$8.70 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.20 | &nbsp;&nbsp;&nbsp;&nbsp;$0.16 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.48 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.64 | &nbsp;&nbsp;&nbsp;&nbsp;1.06 | &nbsp;&nbsp;&nbsp;&nbsp;(0.21)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.37) |
| Total from investment operations | $0.84 | &nbsp;&nbsp;&nbsp;&nbsp;$1.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.02 | &nbsp;&nbsp;&nbsp;$(0.89) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.24) | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;$(0.41) |
| From net realized gain | &nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | $9.91 | &nbsp;&nbsp;&nbsp;&nbsp;$9.43 | &nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;$8.70 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.86 | &nbsp;&nbsp;&nbsp;&nbsp;14.58 | &nbsp;&nbsp;&nbsp;&nbsp;0.59 | &nbsp;&nbsp;&nbsp;&nbsp;(9.32)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;2.15 | &nbsp;&nbsp;&nbsp;&nbsp;10.51 | &nbsp;&nbsp;&nbsp;&nbsp;12.75(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.94 | &nbsp;&nbsp;&nbsp;&nbsp;1.80 | &nbsp;&nbsp;&nbsp;&nbsp;2.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.56(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$327 | &nbsp;&nbsp;&nbsp;&nbsp;$101 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$46 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R1** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | $9.38 | &nbsp;&nbsp;&nbsp;&nbsp;$8.38 | &nbsp;&nbsp;&nbsp;&nbsp;$8.67 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;$0.13 | &nbsp;&nbsp;&nbsp;&nbsp;$0.42 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;1.05 | &nbsp;&nbsp;&nbsp;&nbsp;(0.18)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.37) |
| Total from investment operations | $0.74 | &nbsp;&nbsp;&nbsp;&nbsp;$1.12 | &nbsp;&nbsp;&nbsp;$(0.05) | &nbsp;&nbsp;&nbsp;$(0.95) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.14) | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.38) |
| From net realized gain | &nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | $(0.26) | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;$(0.38) |
| Net asset value, end of period (x) | $9.86 | &nbsp;&nbsp;&nbsp;&nbsp;$9.38 | &nbsp;&nbsp;&nbsp;&nbsp;$8.38 | &nbsp;&nbsp;&nbsp;&nbsp;$8.67 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.84 | &nbsp;&nbsp;&nbsp;&nbsp;13.33 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(9.93)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;2.25 | &nbsp;&nbsp;&nbsp;&nbsp;3.26 | &nbsp;&nbsp;&nbsp;&nbsp;12.20 | &nbsp;&nbsp;&nbsp;&nbsp;13.76(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.98 | &nbsp;&nbsp;&nbsp;&nbsp;0.97 | &nbsp;&nbsp;&nbsp;&nbsp;0.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.87(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;1.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.58(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;&nbsp;$65 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$45 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2065 Fund - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R2** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;$9.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.68 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.44 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.56 | &nbsp;&nbsp;&nbsp;&nbsp;1.05 | &nbsp;&nbsp;&nbsp;&nbsp;(0.18)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.36) |
| Total from investment operations | &nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;$1.17 | &nbsp;&nbsp;&nbsp;$(0.01) | &nbsp;&nbsp;&nbsp;$(0.92) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.20) | &nbsp;&nbsp;&nbsp;$(0.11) | &nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;$(0.40) |
| From net realized gain | &nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | $(0.32) | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;$(0.40) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$9.85 | &nbsp;&nbsp;&nbsp;&nbsp;$9.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.68 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.30 | &nbsp;&nbsp;&nbsp;&nbsp;13.99 | &nbsp;&nbsp;&nbsp;&nbsp;0.18 | &nbsp;&nbsp;&nbsp;&nbsp;(9.67)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.71 | &nbsp;&nbsp;&nbsp;&nbsp;2.54 | &nbsp;&nbsp;&nbsp;&nbsp;10.75 | &nbsp;&nbsp;&nbsp;&nbsp;13.14(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.21 | &nbsp;&nbsp;&nbsp;&nbsp;1.34 | &nbsp;&nbsp;&nbsp;&nbsp;2.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.00(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | $1544 | &nbsp;&nbsp;&nbsp;&nbsp;$259 | &nbsp;&nbsp;&nbsp;&nbsp;$102 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$60 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R3** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.69 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 | &nbsp;&nbsp;&nbsp;&nbsp;$0.47 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.05 | &nbsp;&nbsp;&nbsp;&nbsp;(0.11)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.37) |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.82 | &nbsp;&nbsp;&nbsp;&nbsp;$1.19 | &nbsp;&nbsp;&nbsp;&nbsp;$0.00 | &nbsp;&nbsp;&nbsp;$(0.90) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.18) | &nbsp;&nbsp;&nbsp;$(0.41) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;$(0.30) | &nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.87 | &nbsp;&nbsp;&nbsp;&nbsp;$9.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.69 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.69 | &nbsp;&nbsp;&nbsp;&nbsp;14.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;(9.50)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.43 | &nbsp;&nbsp;&nbsp;&nbsp;13.01(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.12(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.33(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | $10628 | &nbsp;&nbsp;&nbsp;$6380 | &nbsp;&nbsp;&nbsp;$1729 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$45 |

---

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2065 Fund - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R4** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | $9.42 | &nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;$8.70 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.48 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;1.04 | &nbsp;&nbsp;&nbsp;&nbsp;(0.15)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.37) |
| Total from investment operations | $0.84 | &nbsp;&nbsp;&nbsp;&nbsp;$1.21 | &nbsp;&nbsp;&nbsp;&nbsp;$0.02 | &nbsp;&nbsp;&nbsp;$(0.89) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.24) | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;$(0.41) |
| From net realized gain | &nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | $9.90 | &nbsp;&nbsp;&nbsp;&nbsp;$9.42 | &nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;$8.70 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.84 | &nbsp;&nbsp;&nbsp;&nbsp;14.47 | &nbsp;&nbsp;&nbsp;&nbsp;0.59 | &nbsp;&nbsp;&nbsp;&nbsp;(9.32)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;1.21 | &nbsp;&nbsp;&nbsp;&nbsp;2.17 | &nbsp;&nbsp;&nbsp;&nbsp;9.06 | &nbsp;&nbsp;&nbsp;&nbsp;12.76(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;0.01 | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;2.32 | &nbsp;&nbsp;&nbsp;&nbsp;1.90 | &nbsp;&nbsp;&nbsp;&nbsp;2.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.58(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$878 | &nbsp;&nbsp;&nbsp;&nbsp;$439 | &nbsp;&nbsp;&nbsp;&nbsp;$536 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$45 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
| **Class R6** | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.43 | &nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;$8.69 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d)(l) | &nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.43 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.06 | &nbsp;&nbsp;&nbsp;&nbsp;(0.20)(g) | &nbsp;&nbsp;&nbsp;&nbsp;(1.32) |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.86 | &nbsp;&nbsp;&nbsp;&nbsp;$1.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;$(0.89) |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;$(0.42) |
| From net realized gain | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;(0.12) | &nbsp;&nbsp;&nbsp;— |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.42) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.92 | &nbsp;&nbsp;&nbsp;&nbsp;$9.43 | &nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;$8.69 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;9.06 | &nbsp;&nbsp;&nbsp;&nbsp;14.66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;(9.42)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |
| Expenses before expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;1.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.93 | &nbsp;&nbsp;&nbsp;&nbsp;12.42(a) |
| Expenses after expense reductions (h) | &nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.00(a) |
| Net investment income (loss) (l) | &nbsp;&nbsp;&nbsp;&nbsp;2.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.79(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4(n) |
| Net assets at end of period (000 omitted) | $16860 | &nbsp;&nbsp;&nbsp;$9473 | &nbsp;&nbsp;&nbsp;$3358 | &nbsp;&nbsp;&nbsp;&nbsp;$664 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

#### See Notes to Financial Statements

------

*Financial Highlights - continued*

#### MFS Lifetime 2065 Fund - continued
**(a)** **Annualized.** 

**(c)** **For the period from the commencement of the fund's investment operations, September 1, 2021, through the stated period end.** 

**(d)** **Per share data is based on average shares outstanding.** 

**(g)** **The per share amount varies from the net realized and unrealized gain/loss for the period because of the timing of sales of fund shares and the per share amount of realized and unrealized gains and losses at such time.** 

**(h)** **In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary.** 

**(l)** **The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests.** 

**(n)** **Not annualized.** 

**(r)** **Certain expenses have been reduced without which performance would have been lower.** 

**(s)** **From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.** 

**(t)** **Total returns do not include any applicable sales charges.** 

**(x)** **The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.** 

#### See Notes to Financial Statements

------

### Notes to Financial Statements
(1) Business and Organization

MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund, and MFS Lifetime 2065 Fund (the funds) are each a diversified series of MFS Series Trust XII (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company.

Each fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

(2) Significant Accounting Policies

**General — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of each fund's Statement of Assets and Liabilities through the date that the financial statements were issued.**

Each fund is a "fund of funds", which invests the majority of its assets in other MFS mutual funds (hereafter referred to as "underlying affiliated funds" or "underlying funds"), which may have different fiscal year ends than the funds. The underlying funds, in turn, may engage in a number of investment techniques and practices, which involve certain risks. Certain underlying funds invest their portfolio in high-yield securities rated below investment grade. Investments in below investment grade quality securities can involve a substantially greater risk of default or can already be in default, and their values can decline significantly. Below investment grade quality securities tend to be more sensitive to adverse news about the issuer, or the market or economy in general, than higher quality debt instruments. Certain underlying funds invest a significant portion of their assets in asset-backed and/or mortgage-backed securities. For these securities, the value of the debt instrument also depends on the credit quality and adequacy of the underlying assets or collateral as well as whether there is a security interest in the underlying assets or collateral. Enforcing rights, if any, against the underlying assets or collateral may be difficult. U.S. Government securities not supported as to the payment of principal or interest by the U.S. Treasury, such as those issued by Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are subject to greater credit risk than are U.S. Government securities supported by the U.S. Treasury, such as those issued by Ginnie Mae. Certain underlying funds invest in foreign securities, including securities of emerging market issuers. Investments in foreign securities are vulnerable to the effects of changes in the relative values of the local currency and the U.S. dollar and to the effects of changes in each country's market, economic, industrial, political, regulatory, geopolitical, environmental, public health, and other conditions. Investments in emerging markets can involve additional and greater risks than the risks associated with investments in developed foreign markets. Emerging markets can have less developed markets, greater custody and operational risk, less developed legal, regulatory, accounting, and auditing systems, greater government involvement in the economy, greater risk of new or inconsistent government treatment of or restrictions on issuers and instruments, and greater political, social, and economic instability than developed markets.

The accounting policies of the underlying funds in which each fund invests are outlined in the underlying funds' financial statements, which are available without charge by calling 1-800-225-2606, at mfs.com and on the Securities and Exchange Commission (SEC) web site at http://www.sec.gov. The underlying funds' financial statements are not covered by this report.

In this reporting period, the funds adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect each fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. Each fund represents a single operating segment and the Chairman's Committee of the funds' adviser acts as the segment's CODM. Each fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within each fund's financial statements.

**Investment Valuations — Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, "fund" also refers to the underlying funds in which the fund-of-funds invests.**

Subject to its oversight, the funds' Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of each fund's investments to MFS as the funds' adviser, pursuant to each fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of each fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.

------

Notes to Financial Statements - continued

Under each fund's valuation policy and procedures, equity securities, including restricted equity securities and equity securities sold short, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Equity securities sold short, for which there were no sales reported that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Debt instruments sold short are generally valued at an evaluated or composite mean as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing service. For put options, the position may be valued at the last daily ask quotation if there are no trades reported during the day. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued using valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under each fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data. Pricing services generally value debt instruments assuming orderly transactions of institutional round lot sizes, but a fund may hold or transact in such securities in smaller, odd lot sizes. In instances where a fund holds an odd lot size position in a debt instrument, such position will typically be valued using the pricing agent's institutional round lot price for the debt instrument. Odd lots may trade at lower prices than institutional round lots, and the fund may receive different prices when it sells odd lot positions than it would receive for sales of institutional round lot positions. An investment may also be valued at fair value if the adviser determines that the investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of each fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund's net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund's foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating each fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine each fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that each fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which each fund determines its net asset value per share.

Various inputs are used in determining the value of each fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. Each fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities,

------

Notes to Financial Statements - continued

interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of April 30, 2025 in valuing each fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;**Level 1** | &nbsp;&nbsp;**Level 2** | &nbsp;&nbsp;**Level 3** | &nbsp;&nbsp;**Total** |
| **MFS Lifetime Income Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$551373855 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$551373855 |
| **MFS Lifetime 2025 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$350241042 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$350241042 |
| **MFS Lifetime 2030 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$741922148 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$741922148 |
| **MFS Lifetime 2035 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$603564177 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$603564177 |
| **MFS Lifetime 2040 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$765288659 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$765288659 |
| **MFS Lifetime 2045 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$515991999 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$515991999 |
| **MFS Lifetime 2050 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$556762489 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$556762489 |
| **MFS Lifetime 2055 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$381930652 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$381930652 |
| **MFS Lifetime 2060 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;$217983722 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;$217983722 |
| **MFS Lifetime 2065 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | &nbsp;&nbsp;&nbsp;&nbsp;$32703397 | &nbsp;&nbsp;$— | &nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;&nbsp;$32703397 |

---

For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds' shareholder reports for further information regarding the levels used in valuing the underlying funds' assets and liabilities.

**Derivatives — Each fund does not invest in derivatives directly. Each fund does invest in underlying funds that may use derivatives primarily to increase or decrease exposure to a particular market or segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. Derivatives are used for hedging or non-hedging purposes. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. When the underlying funds use derivatives as an investment to increase market exposure, or for hedging purposes, gains and losses from derivative instruments may be substantially greater than the derivative's original cost.**

**Indemnifications — Under each fund's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to each fund. Additionally, in the normal course of business, each fund enters into agreements with service providers that may contain indemnification clauses. Each fund's maximum exposure under these agreements is unknown as this would involve future claims that may be made against each fund that have not yet occurred.**

------

Notes to Financial Statements - continued

**Investment Transactions and Income — Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Distributions of income and capital gains from the underlying funds are recorded on the ex-dividend date. Recognition of net investment income and realized gain from affiliated issuers by each fund is affected by the timing of the declaration of distributions by the underlying funds in which each fund invests.**

Each fund and/or the underlying funds may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statements of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statements of Operations.

Investment transactions are recorded on the trade date. In determining the net gain or loss on securities sold, the cost of securities is determined on the identified cost basis.

**Tax Matters and Distributions — Each fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. Each fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed each fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability.**

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

Book/tax differences primarily relate to wash sale loss deferrals and treating a portion of the proceeds from redemptions as a distribution for tax purposes, as applicable to each fund.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/25** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$22042114 | &nbsp;&nbsp;&nbsp;$14109613 | &nbsp;&nbsp;&nbsp;$27900416 | &nbsp;&nbsp;&nbsp;$20632388 | &nbsp;&nbsp;&nbsp;$24377381 |
| Long-term capital gains | &nbsp;&nbsp;&nbsp;&nbsp;16265595 | &nbsp;&nbsp;&nbsp;&nbsp;10105910 | &nbsp;&nbsp;&nbsp;&nbsp;29406800 | &nbsp;&nbsp;&nbsp;&nbsp;10721521 | &nbsp;&nbsp;&nbsp;&nbsp;15046606 |
| Total distributions | &nbsp;&nbsp;&nbsp;$38307709 | &nbsp;&nbsp;&nbsp;$24215523 | &nbsp;&nbsp;&nbsp;$57307216 | &nbsp;&nbsp;&nbsp;$31353909 | &nbsp;&nbsp;&nbsp;$39423987 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/25** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$15452105 | &nbsp;&nbsp;&nbsp;$15478076 | &nbsp;&nbsp;&nbsp;$10079050 | &nbsp;&nbsp;&nbsp;$5353515 | &nbsp;&nbsp;&nbsp;$669134 |
| Long-term capital gains | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9540974 | &nbsp;&nbsp;&nbsp;&nbsp;10075925 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5911016 | &nbsp;&nbsp;&nbsp;&nbsp;2697038 | &nbsp;&nbsp;&nbsp;&nbsp;232760 |
| Total distributions | &nbsp;&nbsp;&nbsp;$24993079 | &nbsp;&nbsp;&nbsp;$25554001 | &nbsp;&nbsp;&nbsp;$15990066 | &nbsp;&nbsp;&nbsp;$8050553 | &nbsp;&nbsp;&nbsp;$901894 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/24** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$24030553 | &nbsp;&nbsp;&nbsp;$11251448 | &nbsp;&nbsp;&nbsp;$20820021 | &nbsp;&nbsp;&nbsp;$12220031 | &nbsp;&nbsp;&nbsp;$13001594 |
| Long-term capital gains | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4094795 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1021499 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8836454 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3115049 | &nbsp;&nbsp;&nbsp;&nbsp;11512341 |
| Total distributions | &nbsp;&nbsp;&nbsp;$28125348 | &nbsp;&nbsp;&nbsp;$12272947 | &nbsp;&nbsp;&nbsp;$29656475 | &nbsp;&nbsp;&nbsp;$15335080 | &nbsp;&nbsp;&nbsp;$24513935 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/24** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;&nbsp;$7715990 | &nbsp;&nbsp;&nbsp;&nbsp;$7732965 | &nbsp;&nbsp;&nbsp;&nbsp;$4900977 | &nbsp;&nbsp;&nbsp;$2525991 | &nbsp;&nbsp;&nbsp;$203499 |
| Long-term capital gains | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6840080 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8978994 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6013937 | &nbsp;&nbsp;&nbsp;&nbsp;2680971 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;81500 |
| Total distributions | &nbsp;&nbsp;&nbsp;$14556070 | &nbsp;&nbsp;&nbsp;$16711959 | &nbsp;&nbsp;&nbsp;$10914914 | &nbsp;&nbsp;&nbsp;$5206962 | &nbsp;&nbsp;&nbsp;$284999 |

---

------

Notes to Financial Statements - continued

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **As of 4/30/25** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Cost of investments | &nbsp;&nbsp;&nbsp;$518129367 | &nbsp;&nbsp;&nbsp;$334630595 | &nbsp;&nbsp;&nbsp;$656635082 | &nbsp;&nbsp;&nbsp;$518348063 | &nbsp;&nbsp;&nbsp;$591061945 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46403085 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23141255 | &nbsp;&nbsp;&nbsp;&nbsp;104237541 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;92648752 | &nbsp;&nbsp;&nbsp;&nbsp;180313851 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;(13158597) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7530808) | &nbsp;&nbsp;&nbsp;&nbsp;(18950475) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7432638) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6087137) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;$33244488 | &nbsp;&nbsp;&nbsp;&nbsp;$15610447 | &nbsp;&nbsp;&nbsp;&nbsp;$85287066 | &nbsp;&nbsp;&nbsp;&nbsp;$85216114 | &nbsp;&nbsp;&nbsp;$174226714 |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23470 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3293330 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5987336 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3474467 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2345873 |
| Undistributed long-term capital gain | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7438853 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5868583 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22007512 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20076956 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30046637 |
| Other temporary differences | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1430036) | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$39276775 | &nbsp;&nbsp;&nbsp;&nbsp;$24772360 | &nbsp;&nbsp;&nbsp;$113281914 | &nbsp;&nbsp;&nbsp;$108767537 | &nbsp;&nbsp;&nbsp;$206619224 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **As of 4/30/25** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Cost of investments | &nbsp;&nbsp;&nbsp;$430612777 | &nbsp;&nbsp;&nbsp;$457681152 | &nbsp;&nbsp;&nbsp;$331670258 | &nbsp;&nbsp;&nbsp;$201594215 | &nbsp;&nbsp;&nbsp;$31788729 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;88001348 | &nbsp;&nbsp;&nbsp;&nbsp;102310119 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53355859 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18533810 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1556139 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2622126) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3228782) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3095465) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2144303) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(641471) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;$85379222 | &nbsp;&nbsp;&nbsp;&nbsp;$99081337 | &nbsp;&nbsp;&nbsp;&nbsp;$50260394 | &nbsp;&nbsp;&nbsp;&nbsp;$16389507 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$914668 |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1276638 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;896423 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;484811 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;584227 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37175 |
| Undistributed long-term capital gain | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21672715 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24770061 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15981095 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8761591 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1070159 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;$108328575 | &nbsp;&nbsp;&nbsp;$124747821 | &nbsp;&nbsp;&nbsp;&nbsp;$66726300 | &nbsp;&nbsp;&nbsp;&nbsp;$25735325 | &nbsp;&nbsp;&nbsp;&nbsp;$2022002 |

---

**Multiple Classes of Shares of Beneficial Interest — Each fund offers multiple classes of shares, which differ in their respective distribution and service fees. For the MFS Lifetime Income Fund, income and common expenses are allocated to shareholders based on the value of settled shares outstanding of each class. For the MFS Lifetime Income Fund, realized and unrealized gain (loss) are allocated to shareholders based on the daily net assets of each class. For all other funds, income, realized and unrealized gain (loss), and common expenses are allocated to shareholders based on the daily net assets of each class. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class B and Class C shares will convert to Class A shares approximately eight years after purchase. Each fund's distributions declared to shareholders as reported in the Statements of Changes in Net Assets are presented by class as follows:**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | **MFS Lifetime<br> Income Fund** | **MFS Lifetime<br> 2025 Fund** | **MFS Lifetime<br> 2025 Fund** | **MFS Lifetime<br> 2030 Fund** | **MFS Lifetime<br> 2030 Fund** |
|  | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** |
| Class A | $12118187 | &nbsp;&nbsp;&nbsp;$8247132 | &nbsp;&nbsp;&nbsp;$2138668 | &nbsp;&nbsp;&nbsp;$1164290 | &nbsp;&nbsp;&nbsp;$6902201 | &nbsp;&nbsp;&nbsp;$3395832 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41320 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18319 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11667 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;90661 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;73979 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;946423 | &nbsp;&nbsp;&nbsp;&nbsp;1099652 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;142925 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62015 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;494056 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;229318 |
| Class I | &nbsp;&nbsp;&nbsp;2830062 | &nbsp;&nbsp;&nbsp;&nbsp;1930639 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;208991 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;89170 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;628908 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;227722 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;163062 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;90829 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20035 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7400 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;225523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97914 |
| Class R2 | &nbsp;&nbsp;&nbsp;1336777 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;990921 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;795712 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;341680 | &nbsp;&nbsp;&nbsp;&nbsp;2601077 | &nbsp;&nbsp;&nbsp;&nbsp;1318013 |
| Class R3 | &nbsp;&nbsp;&nbsp;7106465 | &nbsp;&nbsp;&nbsp;&nbsp;5329548 | &nbsp;&nbsp;&nbsp;&nbsp;5900433 | &nbsp;&nbsp;&nbsp;&nbsp;3266194 | &nbsp;&nbsp;&nbsp;15242989 | &nbsp;&nbsp;&nbsp;&nbsp;8251019 |
| Class R4 | &nbsp;&nbsp;&nbsp;1114947 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;937577 | &nbsp;&nbsp;&nbsp;&nbsp;1905992 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;933157 | &nbsp;&nbsp;&nbsp;&nbsp;2888479 | &nbsp;&nbsp;&nbsp;&nbsp;1511165 |
| Class R6 | &nbsp;&nbsp;12659254 | &nbsp;&nbsp;&nbsp;&nbsp;9457730 | &nbsp;&nbsp;&nbsp;13084448 | &nbsp;&nbsp;&nbsp;&nbsp;6397374 | &nbsp;&nbsp;&nbsp;28233322 | &nbsp;&nbsp;&nbsp;14551513 |
| Total | $38307709 | $28125348 | $24215523 | $12272947 | $57307216 | $29656475 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2035 Fund** | **MFS Lifetime<br> 2035 Fund** | **MFS Lifetime<br> 2040 Fund** | **MFS Lifetime<br> 2040 Fund** | **MFS Lifetime<br> 2045 Fund** | **MFS Lifetime<br> 2045 Fund** |
|  | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$2321363 | &nbsp;&nbsp;&nbsp;$1105908 | &nbsp;&nbsp;&nbsp;$3649040 | &nbsp;&nbsp;&nbsp;$2071166 | &nbsp;&nbsp;&nbsp;$1664273 | &nbsp;&nbsp;&nbsp;&nbsp;$939365 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22541 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13252 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46079 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37949 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13277 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11479 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;229744 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;104363 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;268874 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;184835 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;117749 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72853 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;446682 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;162745 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;776372 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;373291 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;595824 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;251868 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57518 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20810 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;139529 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78441 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12770 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;631762 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;355220 | &nbsp;&nbsp;&nbsp;&nbsp;1971235 | &nbsp;&nbsp;&nbsp;&nbsp;1216005 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;445402 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;264623 |
| Class R3 | &nbsp;&nbsp;&nbsp;8084873 | &nbsp;&nbsp;&nbsp;&nbsp;4253844 | &nbsp;&nbsp;&nbsp;10329285 | &nbsp;&nbsp;&nbsp;&nbsp;6649838 | &nbsp;&nbsp;&nbsp;&nbsp;7368504 | &nbsp;&nbsp;&nbsp;&nbsp;4617756 |
| Class R4 | &nbsp;&nbsp;&nbsp;1248338 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;608473 | &nbsp;&nbsp;&nbsp;&nbsp;1928669 | &nbsp;&nbsp;&nbsp;&nbsp;1391089 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;902805 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;532632 |
| Class R6 | &nbsp;&nbsp;18311088 | &nbsp;&nbsp;&nbsp;&nbsp;8710465 | &nbsp;&nbsp;&nbsp;20314904 | &nbsp;&nbsp;&nbsp;12511321 | &nbsp;&nbsp;&nbsp;13856713 | &nbsp;&nbsp;&nbsp;&nbsp;7852724 |
| Total | $31353909 | $15335080 | $39423987 | $24513935 | $24993079 | $14556070 |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2050 Fund** | **MFS Lifetime<br> 2050 Fund** | **MFS Lifetime<br> 2055 Fund** | **MFS Lifetime<br> 2055 Fund** | **MFS Lifetime<br> 2060 Fund** | **MFS Lifetime<br> 2060 Fund** |
|  | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$1742096 | &nbsp;&nbsp;&nbsp;$1132673 | &nbsp;&nbsp;&nbsp;&nbsp;$985837 | &nbsp;&nbsp;&nbsp;&nbsp;$800618 | &nbsp;&nbsp;&nbsp;$659053 | &nbsp;&nbsp;&nbsp;$412324 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19174 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16004 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12326 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10463 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5147 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2951 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;159186 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99866 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;102582 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70472 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48190 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30085 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;373691 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;170303 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;178956 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99505 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26603 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16185 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34206 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19093 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;68973 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36957 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2592 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;700685 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;492007 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;408475 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;274109 | &nbsp;&nbsp;&nbsp;&nbsp;138005 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75636 |
| Class R3 | &nbsp;&nbsp;&nbsp;6758067 | &nbsp;&nbsp;&nbsp;&nbsp;4737555 | &nbsp;&nbsp;&nbsp;&nbsp;4348269 | &nbsp;&nbsp;&nbsp;&nbsp;3169752 | &nbsp;&nbsp;&nbsp;2376888 | &nbsp;&nbsp;&nbsp;1669512 |
| Class R4 | &nbsp;&nbsp;&nbsp;1483697 | &nbsp;&nbsp;&nbsp;&nbsp;1450254 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;492607 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;406752 | &nbsp;&nbsp;&nbsp;&nbsp;197292 | &nbsp;&nbsp;&nbsp;&nbsp;199256 |
| Class R6 | &nbsp;&nbsp;14283199 | &nbsp;&nbsp;&nbsp;&nbsp;8594204 | &nbsp;&nbsp;&nbsp;&nbsp;9392041 | &nbsp;&nbsp;&nbsp;&nbsp;6046286 | &nbsp;&nbsp;&nbsp;4595594 | &nbsp;&nbsp;&nbsp;2798421 |
| Total | $25554001 | $16711959 | $15990066 | $10914914 | $8050553 | $5206962 |

---

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime<br> 2065 Fund** | **MFS Lifetime<br> 2065 Fund** |
|  | **Year Ended<br> 4/30/25** | **Year Ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$58615 | &nbsp;&nbsp;&nbsp;$18583 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;7274 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1798 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;4499 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1874 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;1666 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;717 |
| Class R2 | &nbsp;&nbsp;&nbsp;13113 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3392 |
| Class R3 | &nbsp;&nbsp;337999 | &nbsp;&nbsp;&nbsp;109122 |
| Class R4 | &nbsp;&nbsp;&nbsp;19909 | &nbsp;&nbsp;&nbsp;&nbsp;16855 |
| Class R6 | &nbsp;&nbsp;458819 | &nbsp;&nbsp;&nbsp;132658 |
| Total | $901894 | $284999 |

---

(3) Transactions with Affiliates

**Investment Adviser — Each fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the funds. MFS receives no compensation under this agreement; however MFS receives management fees from the underlying MFS funds.**

------

Notes to Financial Statements - continued

For classes other than Class R6 shares, the investment adviser has agreed in writing to pay all of each fund's operating expenses, excluding distribution and service fees, interest, taxes, extraordinary expenses, brokerage and transaction costs and investment-related expenses including fees and expenses associated with investments in investment companies and other similar investment vehicles ("Other Expenses"). For the year ended April 30, 2025, this reduction amounted to the following for each fund and is included in the reduction of total expenses in the Statements of Operations:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime<br> Income Fund** | **MFS Lifetime<br> 2025 Fund** | **MFS Lifetime<br> 2030 Fund** | **MFS Lifetime<br> 2035 Fund** | **MFS Lifetime<br> 2040 Fund** |
| $959800 | $601646 | $1000410 | $789127 | $1014335 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime<br> 2045 Fund** | **MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| $761123 | $820324 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$662256 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$532068 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$283361 |

---

For Class R6 shares, the investment adviser has agreed to bear each fund's expenses, or make payment to such fund, such that the "Other Expenses" of the class do not exceed (0.12)% annually of average daily net assets for the MFS Lifetime Income Fund and (0.14)% annually of average daily net assets for all other funds. These written agreements will continue until modified by the funds' Board of Trustees, but such agreements will continue at least until August 31, 2025. Payments made to certain classes of the funds to further reduce "Other Expenses" below 0.00% annually of average daily net assets are included in "Payments from investment adviser for other expenses agreement" in the Statements of Operations.

In addition to the fees and expenses which each fund bears directly, each fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which each fund invests. Accordingly, the expense ratio for each fund reflects only those fees and expenses borne directly by each fund.

**Distributor — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received the following amounts for the year ended April 30, 2025, as its portion of the initial sales charge on sales of Class A shares of each fund:**

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime<br> Income Fund** | **MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| $2186 | $4184 | &nbsp;&nbsp;&nbsp;$13181 | &nbsp;&nbsp;&nbsp;$17940 | &nbsp;&nbsp;&nbsp;$19437 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime<br> 2045 Fund** | **MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| $12373 | $16890 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12355 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17888 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5093 |

---

The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.

Each fund's distribution plan provides that each fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. The distribution and service fees are computed daily and paid monthly.

#### Distribution Plan Fee Table:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class A** | **Class A** | **Class A** | **Class A** | **Class A** |
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| MFS Lifetime Income Fund |  | 0.25% | 0.25% | 0.25% | $474976 |
| MFS Lifetime 2025 Fund |  | 0.25% | 0.25% | 0.25% | 86483 |
| MFS Lifetime 2030 Fund |  | 0.25% | 0.25% | 0.25% | 234262 |
| MFS Lifetime 2035 Fund |  | 0.25% | 0.25% | 0.25% | 113847 |
| MFS Lifetime 2040 Fund |  | 0.25% | 0.25% | 0.25% | 183405 |
| MFS Lifetime 2045 Fund |  | 0.25% | 0.25% | 0.25% | 90372 |
| MFS Lifetime 2050 Fund |  | 0.25% | 0.25% | 0.25% | 101554 |
| MFS Lifetime 2055 Fund |  | 0.25% | 0.25% | 0.25% | 66299 |
| MFS Lifetime 2060 Fund |  | 0.25% | 0.25% | 0.25% | 44002 |
| MFS Lifetime 2065 Fund |  | 0.25% | 0.25% | 0.25% | 4324 |

---

------

Notes to Financial Statements - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class B** | **Class B** | **Class B** | **Class B** | **Class B** |
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $6360 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 4009 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 17496 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 6008 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 12239 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 3833 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 6005 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 3775 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 0.25% | 383 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class C** | **Class C** | **Class C** | **Class C** | **Class C** |
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $182728 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 25449 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 74785 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 55339 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 63817 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 30722 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 43897 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 30102 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 15904 |
| MFS Lifetime 2065 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 2451 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class R1** | **Class R1** | **Class R1** | **Class R1** | **Class R1** |
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $28881 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 3521 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 32707 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 13282 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 31957 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 7141 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 8985 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 19329 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 0.25% | 255 |
| MFS Lifetime 2065 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 649 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class R2** | **Class R2** | **Class R2** | **Class R2** | **Class R2** |
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| MFS Lifetime Income Fund | 0.25% | 0.25% | 0.50% | 0.50% | $111347 |
| MFS Lifetime 2025 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 62600 |
| MFS Lifetime 2030 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 181262 |
| MFS Lifetime 2035 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 70206 |
| MFS Lifetime 2040 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 207246 |
| MFS Lifetime 2045 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 50780 |
| MFS Lifetime 2050 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 83766 |
| MFS Lifetime 2055 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 51360 |
| MFS Lifetime 2060 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 19251 |
| MFS Lifetime 2065 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 1776 |

---

------

Notes to Financial Statements - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Class R3** | **Class R3** | **Class R3** | **Class R3** | **Class R3** |
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| MFS Lifetime Income Fund |  | 0.25% | 0.25% | 0.25% | $280515 |
| MFS Lifetime 2025 Fund |  | 0.25% | 0.25% | 0.25% | 240255 |
| MFS Lifetime 2030 Fund |  | 0.25% | 0.25% | 0.25% | 526793 |
| MFS Lifetime 2035 Fund |  | 0.25% | 0.25% | 0.25% | 420189 |
| MFS Lifetime 2040 Fund |  | 0.25% | 0.25% | 0.25% | 528628 |
| MFS Lifetime 2045 Fund |  | 0.25% | 0.25% | 0.25% | 405141 |
| MFS Lifetime 2050 Fund |  | 0.25% | 0.25% | 0.25% | 390918 |
| MFS Lifetime 2055 Fund |  | 0.25% | 0.25% | 0.25% | 269804 |
| MFS Lifetime 2060 Fund |  | 0.25% | 0.25% | 0.25% | 165009 |
| MFS Lifetime 2065 Fund |  | 0.25% | 0.25% | 0.25% | 22714 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Total Distribution and Service Fees | &nbsp;&nbsp;&nbsp;&nbsp;$1084807 | &nbsp;&nbsp;&nbsp;&nbsp;$422317 | &nbsp;&nbsp;&nbsp;&nbsp;$1067305 | &nbsp;&nbsp;&nbsp;&nbsp;$678871 | &nbsp;&nbsp;&nbsp;&nbsp;$1027292 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Total Distribution and Service Fees | &nbsp;&nbsp;&nbsp;&nbsp;$587989 | &nbsp;&nbsp;&nbsp;&nbsp;$635125 | &nbsp;&nbsp;&nbsp;&nbsp;$440669 | &nbsp;&nbsp;&nbsp;&nbsp;$244804 | &nbsp;&nbsp;&nbsp;&nbsp;$31914 |

---

(d) In accordance with the distribution plan for certain classes, each fund pays distribution and/or service fees equal to these annual percentage rates of each class's average
daily net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended April 30, 2025 based on each class's average daily net assets. MFD has
voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on the account except for accounts attributable to MFS or
its affiliates' seed money. For the year ended April 30, 2025, these rebates amounted to the following and are included in the reduction of total expenses in the Statements of Operations:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Class A | &nbsp;&nbsp;$7 | &nbsp;&nbsp;$1 | &nbsp;&nbsp;$83 | &nbsp;&nbsp;$20 | &nbsp;&nbsp;$150 |
| Class C | &nbsp;&nbsp;&nbsp;1 | &nbsp;&nbsp;&nbsp;&nbsp;1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 | &nbsp;&nbsp;— |
| Class R2 | 113 | &nbsp;&nbsp;— | &nbsp;&nbsp;291 | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;141 |
| Class R3 |  | &nbsp;&nbsp;— | &nbsp;&nbsp;— | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Class A | $— | &nbsp;&nbsp;$32 | &nbsp;&nbsp;$4 | &nbsp;&nbsp;$4 | &nbsp;&nbsp;$8 |
| Class C |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;11 | &nbsp;&nbsp;— |
| Class R2 |  | &nbsp;&nbsp;&nbsp;&nbsp;25 | &nbsp;&nbsp;— | &nbsp;&nbsp;13 | &nbsp;&nbsp;— |

---

For the MFS Lifetime 2060 Fund, for the year ended April 30, 2025, the 0.75% distribution fee was not imposed for Class B and Class R1 shares due to the sales charge limitations contained in Financial Industry Regulatory Authority ("FINRA") Rule 2341.

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended April 30, 2025, were as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **CDSC Imposed** | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Class A | $3138 | &nbsp;&nbsp;$189 | &nbsp;&nbsp;$765 | &nbsp;&nbsp;&nbsp;$544 | &nbsp;&nbsp;&nbsp;$653 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;348 | &nbsp;&nbsp;&nbsp;&nbsp;111 | &nbsp;&nbsp;&nbsp;&nbsp;245 | &nbsp;&nbsp;&nbsp;&nbsp;115 | &nbsp;&nbsp;— |
| Class C | &nbsp;&nbsp;1919 | &nbsp;&nbsp;&nbsp;&nbsp;671 | &nbsp;&nbsp;&nbsp;&nbsp;664 | &nbsp;&nbsp;1953 | &nbsp;&nbsp;1255 |

---

------

Notes to Financial Statements - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **CDSC Imposed** | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Class A | $1010 | &nbsp;&nbsp;&nbsp;$506 | &nbsp;&nbsp;$454 | &nbsp;&nbsp;$217 | &nbsp;&nbsp;$49 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13 | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24 | &nbsp;&nbsp;— | &nbsp;&nbsp;N/A |
| Class C | &nbsp;&nbsp;1031 | &nbsp;&nbsp;1019 | &nbsp;&nbsp;&nbsp;&nbsp;936 | &nbsp;&nbsp;&nbsp;&nbsp;427 | &nbsp;&nbsp;&nbsp;&nbsp;85 |

---

**Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from each fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of each fund as determined periodically under the supervision of the funds' Board of Trustees. For the year ended April 30, 2025, each fund paid the following fee, which equated to the following annual percentage of each fund's average daily net assets:**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Expenses paid | $66657 | &nbsp;&nbsp;&nbsp;$21799 | &nbsp;&nbsp;&nbsp;$54982 | &nbsp;&nbsp;&nbsp;$34511 | &nbsp;&nbsp;&nbsp;$57156 |
| Annual percentage of average daily net assets | 0.0112% | &nbsp;&nbsp;0.0058% | &nbsp;&nbsp;0.0071% | &nbsp;&nbsp;0.0057% | &nbsp;&nbsp;0.0073% |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Expenses paid | $34942 | &nbsp;&nbsp;&nbsp;$46450 | &nbsp;&nbsp;&nbsp;$44529 | &nbsp;&nbsp;&nbsp;$33089 | &nbsp;&nbsp;&nbsp;$12771 |
| Annual percentage of average daily net assets | 0.0066% | &nbsp;&nbsp;0.0082% | &nbsp;&nbsp;0.0118% | &nbsp;&nbsp;0.0159% | &nbsp;&nbsp;0.0517% |

---

MFSC also receives reimbursement from each fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended April 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to the following:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime<br> Income Fund** | **MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| $519663 | $271874 | &nbsp;&nbsp;&nbsp;$578318 | &nbsp;&nbsp;&nbsp;$420322 | &nbsp;&nbsp;&nbsp;$598175 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime<br> 2045 Fund** | **MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| $395791 | $430218 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$283154 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$177413 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$23252 |

---

**Administrator – MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to each fund. Under an administrative services agreement, each fund reimburses MFS the costs incurred to provide these services. Each fund pays an annual fixed amount of $17,500. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended April 30, 2025 was equivalent to the following annual effective rates of each fund's average daily net assets:**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Percentage of average daily net assets | 0.0029% | &nbsp;&nbsp;0.0047% | &nbsp;&nbsp;0.0023% | &nbsp;&nbsp;0.0029% | &nbsp;&nbsp;0.0022% |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Percentage of average daily net assets | 0.0033% | &nbsp;&nbsp;0.0031% | &nbsp;&nbsp;0.0047% | &nbsp;&nbsp;0.0084% | &nbsp;&nbsp;0.0708% |

---

**Trustees' and Officers' Compensation — Each fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. Independent Trustees' compensation is accrued daily and paid subsequent to each Trustee Board meeting. The funds do not pay compensation directly to Trustees or officers of each fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to each fund. Certain officers and Trustees of each fund are officers or directors of MFS, MFD, and MFSC.**

**Other — Each fund invests in the MFS Institutional Money Market Portfolio which is managed by MFS and seeks current income consistent with preservation of capital and liquidity. This money market fund does not pay a management fee to MFS but does incur investment and operating costs.**

MFS purchased or redeemed fund shares on the dates indicated:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Fund** | **Date** | &nbsp;&nbsp;**Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;11 | &nbsp;&nbsp;$134 |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83 |

---

------

Notes to Financial Statements - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Fund** | **Date** | &nbsp;&nbsp;**Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77 |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80 |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83 |
| MFS Lifetime Income Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83 |
| MFS Lifetime 2025 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42 |
| MFS Lifetime 2025 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40 |
| MFS Lifetime 2025 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;50 |
| MFS Lifetime 2025 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 |
| MFS Lifetime 2025 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40 |
| MFS Lifetime 2025 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65 |
| MFS Lifetime 2030 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78 |
| MFS Lifetime 2035 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;152 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;143 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;73 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 |
| MFS Lifetime 2040 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80 |
| MFS Lifetime 2045 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57 |
| MFS Lifetime 2045 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52 |
| MFS Lifetime 2045 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72 |
| MFS Lifetime 2045 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77 |
| MFS Lifetime 2045 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 |
| MFS Lifetime 2045 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 |
| MFS Lifetime 2050 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;85 |
| MFS Lifetime 2050 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80 |
| MFS Lifetime 2050 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77 |
| MFS Lifetime 2050 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99 |
| MFS Lifetime 2050 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91 |
| MFS Lifetime 2050 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;87 |
| MFS Lifetime 2055 Fund | 6/23/2023 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;4480 | &nbsp;&nbsp;78445 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;4226 | &nbsp;&nbsp;85832 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64 |
| MFS Lifetime 2055 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64 |
| MFS Lifetime 2060 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 |

---

------

Notes to Financial Statements - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Fund** | **Date** | &nbsp;&nbsp;**Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| MFS Lifetime 2060 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;6114 | &nbsp;&nbsp;100020 |
| MFS Lifetime 2060 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 |
| MFS Lifetime 2060 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41 |
| MFS Lifetime 2060 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 |
| MFS Lifetime 2065 Fund | 6/23/2023 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;5411 | &nbsp;&nbsp;&nbsp;&nbsp;45831 |
| MFS Lifetime 2065 Fund | 6/23/2023 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R6 | &nbsp;&nbsp;54236 | &nbsp;&nbsp;461006 |
| MFS Lifetime 2065 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;5522 | &nbsp;&nbsp;&nbsp;&nbsp;55884 |
| MFS Lifetime 2065 Fund | 8/19/2024 | &nbsp;&nbsp;Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20 |

---

At April 30, 2025, MFS held approximately 69% of the outstanding shares of Class B and 100% of the outstanding shares of Class R1 of the MFS Lifetime 2060 Fund. Also, MFS held 100% of the outstanding shares of Class R1 of the MFS Lifetime 2065 Fund.

(4) Portfolio Securities

For the year ended April 30, 2025, purchases and sales of shares of underlying funds, excluding the MFS Institutional Money Market Portfolio, aggregated to the following:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Purchases | $29170727 | &nbsp;&nbsp;$32193284 | &nbsp;&nbsp;$68435304 | &nbsp;&nbsp;$83432657 | &nbsp;&nbsp;$99675867 |
| Sales | $140349883 | &nbsp;&nbsp;$95454119 | &nbsp;&nbsp;$170600141 | &nbsp;&nbsp;$119581833 | &nbsp;&nbsp;$164254174 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Purchases | $72560952 | &nbsp;&nbsp;$70579726 | &nbsp;&nbsp;$54911653 | &nbsp;&nbsp;$44993514 | &nbsp;&nbsp;$17853500 |
| Sales | $106556898 | &nbsp;&nbsp;$107290401 | &nbsp;&nbsp;$60950269 | &nbsp;&nbsp;$36484790 | &nbsp;&nbsp;$5288215 |

---

(5) Shares of Beneficial Interest

Each fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;1631355 | $20220024 | &nbsp;&nbsp;&nbsp;&nbsp;2493897 | &nbsp;&nbsp;$29695958 | &nbsp;&nbsp; 282644 | $3760079 | &nbsp;&nbsp; 1547894 | &nbsp;&nbsp;$19697054 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;387 | &nbsp;&nbsp;&nbsp; 4818 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;774 | &nbsp;&nbsp;&nbsp;&nbsp; 9197 | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; 606 | &nbsp;&nbsp;&nbsp;&nbsp; 7664 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;101231 | &nbsp;&nbsp;&nbsp; 1257065 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;104903 | &nbsp;&nbsp;&nbsp;&nbsp; 1259063 | &nbsp;&nbsp; 30046 | &nbsp;&nbsp;&nbsp; 400244 | &nbsp;&nbsp; 34841 | &nbsp;&nbsp;&nbsp;&nbsp; 440045 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;555756 | &nbsp;&nbsp;&nbsp; 6873912 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;749432 | &nbsp;&nbsp;&nbsp;&nbsp; 8952644 | &nbsp;&nbsp; 23844 | &nbsp;&nbsp;&nbsp; 329560 | &nbsp;&nbsp; 24813 | &nbsp;&nbsp;&nbsp;&nbsp; 315979 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28354 | &nbsp;&nbsp;&nbsp; 351608 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49333 | &nbsp;&nbsp;&nbsp;&nbsp; 593056 | &nbsp;&nbsp; 3221 | &nbsp;&nbsp;&nbsp; 43249 | &nbsp;&nbsp; 4124 | &nbsp;&nbsp;&nbsp;&nbsp; 53064 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;234242 | &nbsp;&nbsp;&nbsp; 2892306 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;300855 | &nbsp;&nbsp;&nbsp;&nbsp; 3596047 | &nbsp;&nbsp; 156234 | &nbsp;&nbsp;&nbsp; 2089030 | &nbsp;&nbsp; 160657 | &nbsp;&nbsp;&nbsp;&nbsp; 2049877 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;1361071 | &nbsp;&nbsp;&nbsp; 16846235 | &nbsp;&nbsp;&nbsp;&nbsp;2194012 | &nbsp;&nbsp;&nbsp;&nbsp; 26144260 | &nbsp;&nbsp; 974089 | &nbsp;&nbsp;&nbsp; 13043681 | &nbsp;&nbsp; 2087112 | &nbsp;&nbsp;&nbsp;&nbsp; 26513263 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;189638 | &nbsp;&nbsp;&nbsp; 2330777 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;524726 | &nbsp;&nbsp;&nbsp;&nbsp; 6256801 | &nbsp;&nbsp; 562389 | &nbsp;&nbsp;&nbsp; 7776652 | &nbsp;&nbsp; 1218675 | &nbsp;&nbsp;&nbsp;&nbsp; 15775209 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;2493516 | &nbsp;&nbsp;&nbsp; 30822329 | &nbsp;&nbsp;&nbsp;&nbsp;4553678 | &nbsp;&nbsp;&nbsp;&nbsp; 54528806 | &nbsp;&nbsp; 2914503 | &nbsp;&nbsp;&nbsp; 39190621 | &nbsp;&nbsp; 5797647 | &nbsp;&nbsp;&nbsp;&nbsp; 74834673 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;6595550 | &nbsp;&nbsp;&nbsp;&nbsp;$81599074 | 10971610 | &nbsp;&nbsp; $131035832 | &nbsp;&nbsp; 4946970 | &nbsp;&nbsp;&nbsp;&nbsp;$66633116 | &nbsp;&nbsp;10876369 | &nbsp;&nbsp; $139686828 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2025 Fund - continued** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares issued to shareholders in<br> reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;927514 | $11371904 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;641527 | &nbsp;&nbsp;$7710690 | &nbsp;&nbsp; 105570 | $1367136 | &nbsp;&nbsp; 54792 | &nbsp;&nbsp;$711744 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2645 | &nbsp;&nbsp;&nbsp; 32431 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3365 | &nbsp;&nbsp;&nbsp;&nbsp; 40426 | &nbsp;&nbsp; 1408 | &nbsp;&nbsp;&nbsp; 18319 | &nbsp;&nbsp; 897 | &nbsp;&nbsp;&nbsp;&nbsp; 11667 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76573 | &nbsp;&nbsp;&nbsp; 937906 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;90562 | &nbsp;&nbsp;&nbsp;&nbsp; 1088254 | &nbsp;&nbsp; 11148 | &nbsp;&nbsp;&nbsp; 142809 | &nbsp;&nbsp; 4824 | &nbsp;&nbsp;&nbsp;&nbsp; 61983 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;203081 | &nbsp;&nbsp;&nbsp; 2491830 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;139991 | &nbsp;&nbsp;&nbsp;&nbsp; 1682409 | &nbsp;&nbsp; 16089 | &nbsp;&nbsp;&nbsp; 208991 | &nbsp;&nbsp; 6838 | &nbsp;&nbsp;&nbsp;&nbsp; 89170 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13297 | &nbsp;&nbsp;&nbsp; 163062 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7522 | &nbsp;&nbsp;&nbsp;&nbsp; 90684 | &nbsp;&nbsp; 1537 | &nbsp;&nbsp;&nbsp; 20035 | &nbsp;&nbsp; 565 | &nbsp;&nbsp;&nbsp;&nbsp; 7399 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;106265 | &nbsp;&nbsp;&nbsp; 1302741 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80702 | &nbsp;&nbsp;&nbsp;&nbsp; 970183 | &nbsp;&nbsp; 61399 | &nbsp;&nbsp;&nbsp; 793892 | &nbsp;&nbsp; 26275 | &nbsp;&nbsp;&nbsp;&nbsp; 341056 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;579430 | &nbsp;&nbsp;&nbsp; 7106040 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;443325 | &nbsp;&nbsp;&nbsp;&nbsp; 5328822 | &nbsp;&nbsp; 456337 | &nbsp;&nbsp;&nbsp; 5900433 | &nbsp;&nbsp; 251633 | &nbsp;&nbsp;&nbsp;&nbsp; 3266194 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;90843 | &nbsp;&nbsp;&nbsp; 1113884 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77775 | &nbsp;&nbsp;&nbsp;&nbsp; 934168 | &nbsp;&nbsp; 144285 | &nbsp;&nbsp;&nbsp; 1881482 | &nbsp;&nbsp; 70473 | &nbsp;&nbsp;&nbsp;&nbsp; 921790 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;964304 | &nbsp;&nbsp;&nbsp; 11869243 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;732775 | &nbsp;&nbsp;&nbsp;&nbsp; 8834452 | &nbsp;&nbsp; 933377 | &nbsp;&nbsp;&nbsp; 12152574 | &nbsp;&nbsp; 449691 | &nbsp;&nbsp;&nbsp;&nbsp; 5872964 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;2963952 | &nbsp;&nbsp;&nbsp;&nbsp;$36389041 | &nbsp;&nbsp;&nbsp;&nbsp;2217544 | &nbsp;&nbsp; $26680088 | &nbsp;&nbsp; 1731150 | &nbsp;&nbsp;&nbsp;&nbsp;$22485671 | &nbsp;&nbsp; 865988 | &nbsp;&nbsp; $11283967 |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (2808846) | $(34742878) | &nbsp;&nbsp; (3623282) | &nbsp;&nbsp;$(43259427) | &nbsp;&nbsp;&nbsp; (854310) | $(11457574) | &nbsp;&nbsp;&nbsp; (693851) | &nbsp;&nbsp;$(8926268) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(37311) | &nbsp;&nbsp;&nbsp; (461165) | &nbsp;&nbsp; (72240) | &nbsp;&nbsp;&nbsp;&nbsp; (864833) | &nbsp;&nbsp;&nbsp; (21484) | &nbsp;&nbsp;&nbsp; (289084) | &nbsp;&nbsp;&nbsp; (25476) | &nbsp;&nbsp;&nbsp;&nbsp; (323566) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(945568) | &nbsp;&nbsp;&nbsp; (11752059) | &nbsp;&nbsp; (1552584) | &nbsp;&nbsp;&nbsp;&nbsp; (18522327) | &nbsp;&nbsp;&nbsp; (91822) | &nbsp;&nbsp;&nbsp; (1210957) | &nbsp;&nbsp;&nbsp; (102770) | &nbsp;&nbsp;&nbsp;&nbsp; (1286766) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;(688048) | &nbsp;&nbsp;&nbsp; (8508459) | &nbsp;&nbsp; (1069236) | &nbsp;&nbsp;&nbsp;&nbsp; (12747673) | &nbsp;&nbsp;&nbsp; (24554) | &nbsp;&nbsp;&nbsp; (325471) | &nbsp;&nbsp;&nbsp; (27868) | &nbsp;&nbsp;&nbsp;&nbsp; (358118) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(53822) | &nbsp;&nbsp;&nbsp; (658237) | &nbsp;&nbsp; (65730) | &nbsp;&nbsp;&nbsp;&nbsp; (779285) | &nbsp;&nbsp;&nbsp; (4714) | &nbsp;&nbsp;&nbsp; (62609) | &nbsp;&nbsp;&nbsp; (6450) | &nbsp;&nbsp;&nbsp;&nbsp; (81552) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(468540) | &nbsp;&nbsp;&nbsp; (5820094) | &nbsp;&nbsp; (777799) | &nbsp;&nbsp;&nbsp;&nbsp; (9287010) | &nbsp;&nbsp;&nbsp; (284534) | &nbsp;&nbsp;&nbsp; (3755822) | &nbsp;&nbsp;&nbsp; (346049) | &nbsp;&nbsp;&nbsp;&nbsp; (4363521) |
| &nbsp;&nbsp;&nbsp;Class R3 | (4847957) | &nbsp;&nbsp;&nbsp; (59335668) | &nbsp;&nbsp; (2607867) | &nbsp;&nbsp;&nbsp;&nbsp; (31037258) | &nbsp;&nbsp;&nbsp;(3375976) | &nbsp;&nbsp;&nbsp; (45193986) | &nbsp;&nbsp;&nbsp;(2047448) | &nbsp;&nbsp;&nbsp;&nbsp; (26228062) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(437002) | &nbsp;&nbsp;&nbsp; (5399369) | &nbsp;&nbsp; (1306540) | &nbsp;&nbsp;&nbsp;&nbsp; (15649359) | &nbsp;&nbsp;&nbsp; (705000) | &nbsp;&nbsp;&nbsp; (9792289) | &nbsp;&nbsp;&nbsp;(1893347) | &nbsp;&nbsp;&nbsp;&nbsp; (24433399) |
| &nbsp;&nbsp;&nbsp;Class R6 | (5574889) | &nbsp;&nbsp;&nbsp; (69180113) | &nbsp;&nbsp; (3703919) | &nbsp;&nbsp;&nbsp;&nbsp; (44368226) | &nbsp;&nbsp;&nbsp;(4394515) | &nbsp;&nbsp;&nbsp; (59321229) | &nbsp;&nbsp;&nbsp;(3772148) | &nbsp;&nbsp;&nbsp;&nbsp; (48510853) |
|  | (15861983) | $(195858042) | &nbsp;&nbsp;(14779197) | &nbsp;&nbsp;$(176515398) | &nbsp;&nbsp;&nbsp;(9756909) | $(131409021) | &nbsp;&nbsp;&nbsp;(8915407) | &nbsp;&nbsp;$(114512105) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;(249977) | $(3150950) | &nbsp;&nbsp; (487858) | &nbsp;&nbsp;$(5852779) | &nbsp;&nbsp;&nbsp; (466096) | $(6330359) | &nbsp;&nbsp; 908835 | &nbsp;&nbsp;$11482530 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(34279) | &nbsp;&nbsp;&nbsp; (423916) | &nbsp;&nbsp; (68101) | &nbsp;&nbsp;&nbsp;&nbsp; (815210) | &nbsp;&nbsp;&nbsp; (20076) | &nbsp;&nbsp;&nbsp; (270765) | &nbsp;&nbsp;&nbsp; (23973) | &nbsp;&nbsp;&nbsp;&nbsp; (304235) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(767764) | &nbsp;&nbsp;&nbsp; (9557088) | &nbsp;&nbsp; (1357119) | &nbsp;&nbsp;&nbsp;&nbsp; (16175010) | &nbsp;&nbsp;&nbsp; (50628) | &nbsp;&nbsp;&nbsp; (667904) | &nbsp;&nbsp;&nbsp; (63105) | &nbsp;&nbsp;&nbsp;&nbsp; (784738) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70789 | &nbsp;&nbsp;&nbsp; 857283 | &nbsp;&nbsp; (179813) | &nbsp;&nbsp;&nbsp;&nbsp; (2112620) | &nbsp;&nbsp; 15379 | &nbsp;&nbsp;&nbsp; 213080 | &nbsp;&nbsp; 3783 | &nbsp;&nbsp;&nbsp;&nbsp; 47031 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(12171) | &nbsp;&nbsp;&nbsp; (143567) | &nbsp;&nbsp; (8875) | &nbsp;&nbsp;&nbsp;&nbsp; (95545) | &nbsp;&nbsp; 44 | &nbsp;&nbsp;&nbsp; 675 | &nbsp;&nbsp;&nbsp; (1761) | &nbsp;&nbsp;&nbsp;&nbsp; (21089) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(128033) | &nbsp;&nbsp;&nbsp; (1625047) | &nbsp;&nbsp; (396242) | &nbsp;&nbsp;&nbsp;&nbsp; (4720780) | &nbsp;&nbsp;&nbsp; (66901) | &nbsp;&nbsp;&nbsp; (872900) | &nbsp;&nbsp;&nbsp; (159117) | &nbsp;&nbsp;&nbsp;&nbsp; (1972588) |
| &nbsp;&nbsp;&nbsp;Class R3 | (2907456) | &nbsp;&nbsp;&nbsp; (35383393) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29470 | &nbsp;&nbsp;&nbsp;&nbsp; 435824 | &nbsp;&nbsp;&nbsp;(1945550) | &nbsp;&nbsp;&nbsp; (26249872) | &nbsp;&nbsp; 291297 | &nbsp;&nbsp;&nbsp;&nbsp; 3551395 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(156521) | &nbsp;&nbsp;&nbsp; (1954708) | &nbsp;&nbsp; (704039) | &nbsp;&nbsp;&nbsp;&nbsp; (8458390) | &nbsp;&nbsp; 1674 | &nbsp;&nbsp;&nbsp; (134155) | &nbsp;&nbsp;&nbsp; (604199) | &nbsp;&nbsp;&nbsp;&nbsp; (7736400) |
| &nbsp;&nbsp;&nbsp;Class R6 | (2117069) | &nbsp;&nbsp;&nbsp; (26488541) | &nbsp;&nbsp;&nbsp;&nbsp;1582534 | &nbsp;&nbsp;&nbsp;&nbsp; 18995032 | &nbsp;&nbsp;&nbsp; (546635) | &nbsp;&nbsp;&nbsp; (7978034) | &nbsp;&nbsp; 2475190 | &nbsp;&nbsp;&nbsp;&nbsp; 32196784 |
|  | (6302481) | $(77869927) | &nbsp;&nbsp; (1590043) | &nbsp;&nbsp; $(18799478) | &nbsp;&nbsp;&nbsp;(3078789) | $(42290234) | &nbsp;&nbsp; 2826950 | &nbsp;&nbsp; $36458690 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;535238 | $8693938 | &nbsp;&nbsp;&nbsp;&nbsp;1253897 | &nbsp;&nbsp;$19198135 | &nbsp;&nbsp; 566727 | $10140181 | &nbsp;&nbsp; 845920 | &nbsp;&nbsp;$13745472 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;772 | &nbsp;&nbsp;&nbsp; 12707 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4401 | &nbsp;&nbsp;&nbsp;&nbsp; 65705 | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; 621 | &nbsp;&nbsp;&nbsp;&nbsp; 10126 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65686 | &nbsp;&nbsp;&nbsp; 1040010 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67862 | &nbsp;&nbsp;&nbsp;&nbsp; 1021750 | &nbsp;&nbsp; 48819 | &nbsp;&nbsp;&nbsp; 856057 | &nbsp;&nbsp; 99531 | &nbsp;&nbsp;&nbsp;&nbsp; 1553631 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;208832 | &nbsp;&nbsp;&nbsp; 3535156 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;116231 | &nbsp;&nbsp;&nbsp;&nbsp; 1772462 | &nbsp;&nbsp; 80595 | &nbsp;&nbsp;&nbsp; 1423577 | &nbsp;&nbsp; 447164 | &nbsp;&nbsp;&nbsp;&nbsp; 7342700 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23275 | &nbsp;&nbsp;&nbsp; 374793 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41152 | &nbsp;&nbsp;&nbsp;&nbsp; 625645 | &nbsp;&nbsp; 9038 | &nbsp;&nbsp;&nbsp; 159943 | &nbsp;&nbsp; 16183 | &nbsp;&nbsp;&nbsp;&nbsp; 267546 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;362021 | &nbsp;&nbsp;&nbsp; 5794936 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;336138 | &nbsp;&nbsp;&nbsp;&nbsp; 5115221 | &nbsp;&nbsp; 141165 | &nbsp;&nbsp;&nbsp; 2534362 | &nbsp;&nbsp; 203532 | &nbsp;&nbsp;&nbsp;&nbsp; 3322750 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;2160068 | &nbsp;&nbsp;&nbsp; 34896520 | &nbsp;&nbsp;&nbsp;&nbsp;3166069 | &nbsp;&nbsp;&nbsp;&nbsp; 48354143 | &nbsp;&nbsp; 1456885 | &nbsp;&nbsp;&nbsp; 26156650 | &nbsp;&nbsp; 2836797 | &nbsp;&nbsp;&nbsp;&nbsp; 46043906 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;741843 | &nbsp;&nbsp;&nbsp; 12080226 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;950994 | &nbsp;&nbsp;&nbsp;&nbsp; 14921978 | &nbsp;&nbsp; 407851 | &nbsp;&nbsp;&nbsp; 7361557 | &nbsp;&nbsp; 688297 | &nbsp;&nbsp;&nbsp;&nbsp; 11428190 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;4400746 | &nbsp;&nbsp;&nbsp; 72129712 | &nbsp;&nbsp;&nbsp;&nbsp;8039922 | &nbsp;&nbsp;&nbsp;&nbsp; 124992412 | &nbsp;&nbsp; 3946886 | &nbsp;&nbsp;&nbsp; 71184191 | &nbsp;&nbsp; 6853768 | &nbsp;&nbsp;&nbsp;&nbsp; 112680361 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;8498481 | $138557998 | 13976666 | &nbsp;&nbsp; $216067451 | &nbsp;&nbsp; 6657966 | $119816518 | &nbsp;&nbsp;11991813 | &nbsp;&nbsp; $196394682 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2035 Fund - continued** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares issued to shareholders in<br> reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;382191 | $5981292 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185877 | &nbsp;&nbsp;$2897817 | &nbsp;&nbsp; 110452 | $1937322 | &nbsp;&nbsp; 54727 | &nbsp;&nbsp;$910656 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5804 | &nbsp;&nbsp;&nbsp; 90661 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4767 | &nbsp;&nbsp;&nbsp;&nbsp; 73847 | &nbsp;&nbsp; 1281 | &nbsp;&nbsp;&nbsp; 22541 | &nbsp;&nbsp; 796 | &nbsp;&nbsp;&nbsp;&nbsp; 13252 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31955 | &nbsp;&nbsp;&nbsp; 490821 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14551 | &nbsp;&nbsp;&nbsp;&nbsp; 222920 | &nbsp;&nbsp; 13207 | &nbsp;&nbsp;&nbsp; 228080 | &nbsp;&nbsp; 6322 | &nbsp;&nbsp;&nbsp;&nbsp; 103689 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39106 | &nbsp;&nbsp;&nbsp; 615916 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14106 | &nbsp;&nbsp;&nbsp;&nbsp; 221330 | &nbsp;&nbsp; 25168 | &nbsp;&nbsp;&nbsp; 442697 | &nbsp;&nbsp; 9630 | &nbsp;&nbsp;&nbsp;&nbsp; 160724 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14484 | &nbsp;&nbsp;&nbsp; 225523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6309 | &nbsp;&nbsp;&nbsp;&nbsp; 97914 | &nbsp;&nbsp; 3287 | &nbsp;&nbsp;&nbsp; 57518 | &nbsp;&nbsp; 1252 | &nbsp;&nbsp;&nbsp;&nbsp; 20810 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165342 | &nbsp;&nbsp;&nbsp; 2567767 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;84364 | &nbsp;&nbsp;&nbsp;&nbsp; 1305107 | &nbsp;&nbsp; 35833 | &nbsp;&nbsp;&nbsp; 630299 | &nbsp;&nbsp; 21251 | &nbsp;&nbsp;&nbsp;&nbsp; 354472 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;977115 | &nbsp;&nbsp;&nbsp; 15242989 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;530954 | &nbsp;&nbsp;&nbsp;&nbsp; 8251019 | &nbsp;&nbsp; 459890 | &nbsp;&nbsp;&nbsp; 8084873 | &nbsp;&nbsp; 255027 | &nbsp;&nbsp;&nbsp;&nbsp; 4253844 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;178409 | &nbsp;&nbsp;&nbsp; 2822437 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94053 | &nbsp;&nbsp;&nbsp;&nbsp; 1481340 | &nbsp;&nbsp; 70369 | &nbsp;&nbsp;&nbsp; 1248338 | &nbsp;&nbsp; 36176 | &nbsp;&nbsp;&nbsp;&nbsp; 608473 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;1599300 | &nbsp;&nbsp;&nbsp; 25236954 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;839137 | &nbsp;&nbsp;&nbsp;&nbsp; 13182837 | &nbsp;&nbsp; 901447 | &nbsp;&nbsp;&nbsp; 15946596 | &nbsp;&nbsp; 451208 | &nbsp;&nbsp;&nbsp;&nbsp; 7571270 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;3393706 | &nbsp;&nbsp;&nbsp;&nbsp;$53274360 | &nbsp;&nbsp;&nbsp;&nbsp;1774118 | &nbsp;&nbsp; $27734131 | &nbsp;&nbsp; 1620934 | &nbsp;&nbsp;&nbsp;&nbsp;$28598264 | &nbsp;&nbsp; 836389 | &nbsp;&nbsp; $13997190 |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;(894939) | $(14552965) | &nbsp;&nbsp; (818593) | &nbsp;&nbsp;$(12615111) | &nbsp;&nbsp;&nbsp; (470035) | $(8343215) | &nbsp;&nbsp;&nbsp; (462799) | &nbsp;&nbsp;$(7592441) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(76735) | &nbsp;&nbsp;&nbsp; (1250105) | &nbsp;&nbsp; (74274) | &nbsp;&nbsp;&nbsp;&nbsp; (1138964) | &nbsp;&nbsp;&nbsp; (23382) | &nbsp;&nbsp;&nbsp; (415660) | &nbsp;&nbsp;&nbsp; (28720) | &nbsp;&nbsp;&nbsp;&nbsp; (465336) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(115739) | &nbsp;&nbsp;&nbsp; (1852151) | &nbsp;&nbsp; (145312) | &nbsp;&nbsp;&nbsp;&nbsp; (2188657) | &nbsp;&nbsp;&nbsp; (67116) | &nbsp;&nbsp;&nbsp; (1195047) | &nbsp;&nbsp;&nbsp; (65728) | &nbsp;&nbsp;&nbsp;&nbsp; (1050066) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(81674) | &nbsp;&nbsp;&nbsp; (1338238) | &nbsp;&nbsp; (185288) | &nbsp;&nbsp;&nbsp;&nbsp; (2833335) | &nbsp;&nbsp;&nbsp; (101728) | &nbsp;&nbsp;&nbsp; (1801183) | &nbsp;&nbsp;&nbsp; (93132) | &nbsp;&nbsp;&nbsp;&nbsp; (1527837) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(35087) | &nbsp;&nbsp;&nbsp; (558779) | &nbsp;&nbsp; (75142) | &nbsp;&nbsp;&nbsp;&nbsp; (1148929) | &nbsp;&nbsp;&nbsp; (7183) | &nbsp;&nbsp;&nbsp; (127365) | &nbsp;&nbsp;&nbsp; (8602) | &nbsp;&nbsp;&nbsp;&nbsp; (139711) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(576346) | &nbsp;&nbsp;&nbsp; (9255134) | &nbsp;&nbsp; (1253869) | &nbsp;&nbsp;&nbsp;&nbsp; (19054583) | &nbsp;&nbsp;&nbsp; (250803) | &nbsp;&nbsp;&nbsp; (4519735) | &nbsp;&nbsp;&nbsp; (334057) | &nbsp;&nbsp;&nbsp;&nbsp; (5479141) |
| &nbsp;&nbsp;&nbsp;Class R3 | (4764076) | &nbsp;&nbsp;&nbsp; (76985009) | &nbsp;&nbsp; (2848091) | &nbsp;&nbsp;&nbsp;&nbsp; (43809633) | &nbsp;&nbsp;&nbsp;(3498924) | &nbsp;&nbsp;&nbsp; (62603782) | &nbsp;&nbsp;&nbsp;(1596952) | &nbsp;&nbsp;&nbsp;&nbsp; (25788988) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(680746) | &nbsp;&nbsp;&nbsp; (11152012) | &nbsp;&nbsp; (2559145) | &nbsp;&nbsp;&nbsp;&nbsp; (40055368) | &nbsp;&nbsp;&nbsp; (655996) | &nbsp;&nbsp;&nbsp; (11939547) | &nbsp;&nbsp;&nbsp;(1999670) | &nbsp;&nbsp;&nbsp;&nbsp; (32730415) |
| &nbsp;&nbsp;&nbsp;Class R6 | (7613535) | &nbsp;&nbsp;&nbsp;(125531372) | &nbsp;&nbsp; (3740405) | &nbsp;&nbsp;&nbsp;&nbsp; (58248436) | &nbsp;&nbsp;&nbsp;(3682948) | &nbsp;&nbsp;&nbsp; (66567020) | &nbsp;&nbsp;&nbsp;(3026268) | &nbsp;&nbsp;&nbsp;&nbsp; (49953904) |
|  | (14838877) | $(242475765) | &nbsp;&nbsp;(11700119) | &nbsp;&nbsp;$(181093016) | &nbsp;&nbsp;&nbsp;(8758115) | $(157512554) | &nbsp;&nbsp;&nbsp;(7615928) | &nbsp;&nbsp;$(124727839) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22490 | $122265 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;621181 | &nbsp;&nbsp;$9480841 | &nbsp;&nbsp; 207144 | $3734288 | &nbsp;&nbsp; 437848 | &nbsp;&nbsp;$7063687 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(70159) | &nbsp;&nbsp;&nbsp; (1146737) | &nbsp;&nbsp; (65106) | &nbsp;&nbsp;&nbsp;&nbsp; (999412) | &nbsp;&nbsp;&nbsp; (22101) | &nbsp;&nbsp;&nbsp; (393119) | &nbsp;&nbsp;&nbsp; (27303) | &nbsp;&nbsp;&nbsp;&nbsp; (441958) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(18098) | &nbsp;&nbsp;&nbsp; (321320) | &nbsp;&nbsp; (62899) | &nbsp;&nbsp;&nbsp;&nbsp; (943987) | &nbsp;&nbsp;&nbsp; (5090) | &nbsp;&nbsp;&nbsp; (110910) | &nbsp;&nbsp; 40125 | &nbsp;&nbsp;&nbsp;&nbsp; 607254 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;166264 | &nbsp;&nbsp;&nbsp; 2812834 | &nbsp;&nbsp; (54951) | &nbsp;&nbsp;&nbsp;&nbsp; (839543) | &nbsp;&nbsp; 4035 | &nbsp;&nbsp;&nbsp; 65091 | &nbsp;&nbsp; 363662 | &nbsp;&nbsp;&nbsp;&nbsp; 5975587 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2672 | &nbsp;&nbsp;&nbsp; 41537 | &nbsp;&nbsp; (27681) | &nbsp;&nbsp;&nbsp;&nbsp; (425370) | &nbsp;&nbsp; 5142 | &nbsp;&nbsp;&nbsp; 90096 | &nbsp;&nbsp; 8833 | &nbsp;&nbsp;&nbsp;&nbsp; 148645 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(48983) | &nbsp;&nbsp;&nbsp; (892431) | &nbsp;&nbsp; (833367) | &nbsp;&nbsp;&nbsp;&nbsp; (12634255) | &nbsp;&nbsp;&nbsp; (73805) | &nbsp;&nbsp;&nbsp; (1355074) | &nbsp;&nbsp;&nbsp; (109274) | &nbsp;&nbsp;&nbsp;&nbsp; (1801919) |
| &nbsp;&nbsp;&nbsp;Class R3 | (1626893) | &nbsp;&nbsp;&nbsp; (26845500) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;848932 | &nbsp;&nbsp;&nbsp;&nbsp; 12795529 | &nbsp;&nbsp;&nbsp;(1582149) | &nbsp;&nbsp;&nbsp; (28362259) | &nbsp;&nbsp; 1494872 | &nbsp;&nbsp;&nbsp;&nbsp; 24508762 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;239506 | &nbsp;&nbsp;&nbsp; 3750651 | &nbsp;&nbsp; (1514098) | &nbsp;&nbsp;&nbsp;&nbsp; (23652050) | &nbsp;&nbsp;&nbsp; (177776) | &nbsp;&nbsp;&nbsp; (3329652) | &nbsp;&nbsp;&nbsp;(1275197) | &nbsp;&nbsp;&nbsp;&nbsp; (20693752) |
| &nbsp;&nbsp;&nbsp;Class R6 | (1613489) | &nbsp;&nbsp;&nbsp; (28164706) | &nbsp;&nbsp;&nbsp;&nbsp;5138654 | &nbsp;&nbsp;&nbsp;&nbsp; 79926813 | &nbsp;&nbsp; 1165385 | &nbsp;&nbsp;&nbsp; 20563767 | &nbsp;&nbsp; 4278708 | &nbsp;&nbsp;&nbsp;&nbsp; 70297727 |
|  | (2946690) | $(50643407) | &nbsp;&nbsp;&nbsp;&nbsp;4050665 | &nbsp;&nbsp; $62708566 | &nbsp;&nbsp;&nbsp; (479215) | &nbsp;&nbsp;&nbsp;&nbsp;$(9097772) | &nbsp;&nbsp; 5212274 | &nbsp;&nbsp; $85664033 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;643004 | $12745582 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;946864 | &nbsp;&nbsp;$16834351 | &nbsp;&nbsp; 338469 | $6680677 | &nbsp;&nbsp; 666031 | &nbsp;&nbsp;$11641031 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;403 | &nbsp;&nbsp;&nbsp; 8096 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp; 875 | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; — | &nbsp;&nbsp; — |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55909 | &nbsp;&nbsp;&nbsp; 1079909 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;62709 | &nbsp;&nbsp;&nbsp;&nbsp; 1082701 | &nbsp;&nbsp; 39696 | &nbsp;&nbsp;&nbsp; 764685 | &nbsp;&nbsp; 41313 | &nbsp;&nbsp;&nbsp;&nbsp; 715050 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;115772 | &nbsp;&nbsp;&nbsp; 2289487 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;420595 | &nbsp;&nbsp;&nbsp;&nbsp; 7615489 | &nbsp;&nbsp; 82223 | &nbsp;&nbsp;&nbsp; 1609736 | &nbsp;&nbsp; 538307 | &nbsp;&nbsp;&nbsp;&nbsp; 9500323 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20909 | &nbsp;&nbsp;&nbsp; 408897 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28918 | &nbsp;&nbsp;&nbsp;&nbsp; 506325 | &nbsp;&nbsp; 7237 | &nbsp;&nbsp;&nbsp; 141210 | &nbsp;&nbsp; 8044 | &nbsp;&nbsp;&nbsp;&nbsp; 141409 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;300777 | &nbsp;&nbsp;&nbsp; 5885532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;399453 | &nbsp;&nbsp;&nbsp;&nbsp; 6993541 | &nbsp;&nbsp; 122540 | &nbsp;&nbsp;&nbsp; 2423371 | &nbsp;&nbsp; 183933 | &nbsp;&nbsp;&nbsp;&nbsp; 3200852 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;1880308 | &nbsp;&nbsp;&nbsp; 37059314 | &nbsp;&nbsp;&nbsp;&nbsp;2545885 | &nbsp;&nbsp;&nbsp;&nbsp; 44943987 | &nbsp;&nbsp; 1344298 | &nbsp;&nbsp;&nbsp; 26371095 | &nbsp;&nbsp; 2059762 | &nbsp;&nbsp;&nbsp;&nbsp; 35693902 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;358514 | &nbsp;&nbsp;&nbsp; 7171489 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;695059 | &nbsp;&nbsp;&nbsp;&nbsp; 12658694 | &nbsp;&nbsp; 252943 | &nbsp;&nbsp;&nbsp; 5013049 | &nbsp;&nbsp; 501962 | &nbsp;&nbsp;&nbsp;&nbsp; 9036933 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;3997673 | &nbsp;&nbsp;&nbsp; 80013901 | &nbsp;&nbsp;&nbsp;&nbsp;6079912 | &nbsp;&nbsp;&nbsp;&nbsp; 109493942 | &nbsp;&nbsp; 3061210 | &nbsp;&nbsp;&nbsp; 60357722 | &nbsp;&nbsp; 4291496 | &nbsp;&nbsp;&nbsp;&nbsp; 76058561 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;7373269 | $146662207 | 11179443 | &nbsp;&nbsp; $200129905 | &nbsp;&nbsp; 5248616 | $103361545 | &nbsp;&nbsp; 8290848 | &nbsp;&nbsp; $145988061 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2045 Fund - continued** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares issued to shareholders in<br> reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;158712 | $3091704 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97076 | &nbsp;&nbsp;$1759015 | &nbsp;&nbsp; 74951 | $1456306 | &nbsp;&nbsp; 45382 | &nbsp;&nbsp;$812791 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2359 | &nbsp;&nbsp;&nbsp; 46079 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2093 | &nbsp;&nbsp;&nbsp;&nbsp; 37949 | &nbsp;&nbsp; 682 | &nbsp;&nbsp;&nbsp; 13277 | &nbsp;&nbsp; 642 | &nbsp;&nbsp;&nbsp;&nbsp; 11479 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13801 | &nbsp;&nbsp;&nbsp; 263324 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10303 | &nbsp;&nbsp;&nbsp;&nbsp; 182978 | &nbsp;&nbsp; 6120 | &nbsp;&nbsp;&nbsp; 117323 | &nbsp;&nbsp; 4107 | &nbsp;&nbsp;&nbsp;&nbsp; 72616 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36761 | &nbsp;&nbsp;&nbsp; 721996 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18663 | &nbsp;&nbsp;&nbsp;&nbsp; 340787 | &nbsp;&nbsp; 30477 | &nbsp;&nbsp;&nbsp; 595824 | &nbsp;&nbsp; 13985 | &nbsp;&nbsp;&nbsp;&nbsp; 251868 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7222 | &nbsp;&nbsp;&nbsp; 139529 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4360 | &nbsp;&nbsp;&nbsp;&nbsp; 78441 | &nbsp;&nbsp; 1472 | &nbsp;&nbsp;&nbsp; 28532 | &nbsp;&nbsp; 714 | &nbsp;&nbsp;&nbsp;&nbsp; 12770 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99141 | &nbsp;&nbsp;&nbsp; 1920365 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65915 | &nbsp;&nbsp;&nbsp;&nbsp; 1188447 | &nbsp;&nbsp; 22958 | &nbsp;&nbsp;&nbsp; 445402 | &nbsp;&nbsp; 14791 | &nbsp;&nbsp;&nbsp;&nbsp; 264607 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;530248 | &nbsp;&nbsp;&nbsp; 10329226 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;367191 | &nbsp;&nbsp;&nbsp;&nbsp; 6649838 | &nbsp;&nbsp; 379429 | &nbsp;&nbsp;&nbsp; 7368504 | &nbsp;&nbsp; 257975 | &nbsp;&nbsp;&nbsp;&nbsp; 4617751 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97491 | &nbsp;&nbsp;&nbsp; 1927404 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75691 | &nbsp;&nbsp;&nbsp;&nbsp; 1390437 | &nbsp;&nbsp; 46004 | &nbsp;&nbsp;&nbsp; 901681 | &nbsp;&nbsp; 29479 | &nbsp;&nbsp;&nbsp;&nbsp; 532104 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;899432 | &nbsp;&nbsp;&nbsp; 17745784 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;595124 | &nbsp;&nbsp;&nbsp;&nbsp; 10914574 | &nbsp;&nbsp; 626130 | &nbsp;&nbsp;&nbsp; 12240845 | &nbsp;&nbsp; 385111 | &nbsp;&nbsp;&nbsp;&nbsp; 6935853 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;1845167 | &nbsp;&nbsp;&nbsp;&nbsp;$36185411 | &nbsp;&nbsp;&nbsp;&nbsp;1236416 | &nbsp;&nbsp; $22542466 | &nbsp;&nbsp; 1188223 | &nbsp;&nbsp;&nbsp;&nbsp;$23167694 | &nbsp;&nbsp; 752186 | &nbsp;&nbsp; $13511839 |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;(574276) | $(11339234) | &nbsp;&nbsp; (464821) | &nbsp;&nbsp;$(8373801) | &nbsp;&nbsp;&nbsp; (365463) | $(7148654) | &nbsp;&nbsp;&nbsp; (277650) | &nbsp;&nbsp;$(4949692) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(27346) | &nbsp;&nbsp;&nbsp; (536526) | &nbsp;&nbsp; (44382) | &nbsp;&nbsp;&nbsp;&nbsp; (792009) | &nbsp;&nbsp;&nbsp; (10501) | &nbsp;&nbsp;&nbsp; (204609) | &nbsp;&nbsp;&nbsp; (17663) | &nbsp;&nbsp;&nbsp;&nbsp; (310588) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(96461) | &nbsp;&nbsp;&nbsp; (1862718) | &nbsp;&nbsp; (137989) | &nbsp;&nbsp;&nbsp;&nbsp; (2426973) | &nbsp;&nbsp;&nbsp; (59601) | &nbsp;&nbsp;&nbsp; (1149856) | &nbsp;&nbsp;&nbsp; (29605) | &nbsp;&nbsp;&nbsp;&nbsp; (521739) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;(127039) | &nbsp;&nbsp;&nbsp; (2541683) | &nbsp;&nbsp; (184739) | &nbsp;&nbsp;&nbsp;&nbsp; (3240198) | &nbsp;&nbsp;&nbsp; (107146) | &nbsp;&nbsp;&nbsp; (2131830) | &nbsp;&nbsp;&nbsp; (108758) | &nbsp;&nbsp;&nbsp;&nbsp; (1926746) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(26811) | &nbsp;&nbsp;&nbsp; (523739) | &nbsp;&nbsp; (52026) | &nbsp;&nbsp;&nbsp;&nbsp; (918562) | &nbsp;&nbsp;&nbsp; (2714) | &nbsp;&nbsp;&nbsp; (50370) | &nbsp;&nbsp;&nbsp; (5495) | &nbsp;&nbsp;&nbsp;&nbsp; (93704) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(576114) | &nbsp;&nbsp;&nbsp; (11277361) | &nbsp;&nbsp; (686221) | &nbsp;&nbsp;&nbsp;&nbsp; (11947615) | &nbsp;&nbsp;&nbsp; (153947) | &nbsp;&nbsp;&nbsp; (3017412) | &nbsp;&nbsp;&nbsp; (293980) | &nbsp;&nbsp;&nbsp;&nbsp; (5087073) |
| &nbsp;&nbsp;&nbsp;Class R3 | (3946410) | &nbsp;&nbsp;&nbsp; (77650739) | &nbsp;&nbsp; (1720379) | &nbsp;&nbsp;&nbsp;&nbsp; (30487687) | &nbsp;&nbsp;&nbsp;(3100449) | &nbsp;&nbsp;&nbsp; (60594172) | &nbsp;&nbsp;&nbsp;(1093003) | &nbsp;&nbsp;&nbsp;&nbsp; (19181629) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(577494) | &nbsp;&nbsp;&nbsp; (11651024) | &nbsp;&nbsp; (1555706) | &nbsp;&nbsp;&nbsp;&nbsp; (28437986) | &nbsp;&nbsp;&nbsp; (332440) | &nbsp;&nbsp;&nbsp; (6553633) | &nbsp;&nbsp;&nbsp; (839579) | &nbsp;&nbsp;&nbsp;&nbsp; (15033360) |
| &nbsp;&nbsp;&nbsp;Class R6 | (4716049) | &nbsp;&nbsp;&nbsp; (94714536) | &nbsp;&nbsp; (2556551) | &nbsp;&nbsp;&nbsp;&nbsp; (46274734) | &nbsp;&nbsp;&nbsp;(2872638) | &nbsp;&nbsp;&nbsp; (57351361) | &nbsp;&nbsp;&nbsp;(2357427) | &nbsp;&nbsp;&nbsp;&nbsp; (41760702) |
|  | (10668000) | $(212097560) | &nbsp;&nbsp; (7402814) | &nbsp;&nbsp;$(132899565) | &nbsp;&nbsp;&nbsp;(7004899) | $(138201897) | &nbsp;&nbsp;&nbsp;(5023160) | &nbsp;&nbsp; $(88865233) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;227440 | $4498052 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;579119 | &nbsp;&nbsp;$10219565 | &nbsp;&nbsp; 47957 | $988329 | &nbsp;&nbsp; 433763 | &nbsp;&nbsp;$7504130 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(24584) | &nbsp;&nbsp;&nbsp; (482351) | &nbsp;&nbsp; (42241) | &nbsp;&nbsp;&nbsp;&nbsp; (753185) | &nbsp;&nbsp;&nbsp; (9819) | &nbsp;&nbsp;&nbsp; (191332) | &nbsp;&nbsp;&nbsp; (17021) | &nbsp;&nbsp;&nbsp;&nbsp; (299109) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(26751) | &nbsp;&nbsp;&nbsp; (519485) | &nbsp;&nbsp; (64977) | &nbsp;&nbsp;&nbsp;&nbsp; (1161294) | &nbsp;&nbsp;&nbsp; (13785) | &nbsp;&nbsp;&nbsp; (267848) | &nbsp;&nbsp; 15815 | &nbsp;&nbsp;&nbsp;&nbsp; 265927 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25494 | &nbsp;&nbsp;&nbsp; 469800 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;254519 | &nbsp;&nbsp;&nbsp;&nbsp; 4716078 | &nbsp;&nbsp; 5554 | &nbsp;&nbsp;&nbsp; 73730 | &nbsp;&nbsp; 443534 | &nbsp;&nbsp;&nbsp;&nbsp; 7825445 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1320 | &nbsp;&nbsp;&nbsp; 24687 | &nbsp;&nbsp; (18748) | &nbsp;&nbsp;&nbsp;&nbsp; (333796) | &nbsp;&nbsp; 5995 | &nbsp;&nbsp;&nbsp; 119372 | &nbsp;&nbsp; 3263 | &nbsp;&nbsp;&nbsp;&nbsp; 60475 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(176196) | &nbsp;&nbsp;&nbsp; (3471464) | &nbsp;&nbsp; (220853) | &nbsp;&nbsp;&nbsp;&nbsp; (3765627) | &nbsp;&nbsp;&nbsp; (8449) | &nbsp;&nbsp;&nbsp; (148639) | &nbsp;&nbsp;&nbsp; (95256) | &nbsp;&nbsp;&nbsp;&nbsp; (1621614) |
| &nbsp;&nbsp;&nbsp;Class R3 | (1535854) | &nbsp;&nbsp;&nbsp; (30262199) | &nbsp;&nbsp;&nbsp;&nbsp;1192697 | &nbsp;&nbsp;&nbsp;&nbsp; 21106138 | &nbsp;&nbsp;&nbsp;(1376722) | &nbsp;&nbsp;&nbsp; (26854573) | &nbsp;&nbsp; 1224734 | &nbsp;&nbsp;&nbsp;&nbsp; 21130024 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(121489) | &nbsp;&nbsp;&nbsp; (2552131) | &nbsp;&nbsp; (784956) | &nbsp;&nbsp;&nbsp;&nbsp; (14388855) | &nbsp;&nbsp;&nbsp; (33493) | &nbsp;&nbsp;&nbsp; (638903) | &nbsp;&nbsp;&nbsp; (308138) | &nbsp;&nbsp;&nbsp;&nbsp; (5464323) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;181056 | &nbsp;&nbsp;&nbsp; 3045149 | &nbsp;&nbsp;&nbsp;&nbsp;4118485 | &nbsp;&nbsp;&nbsp;&nbsp; 74133782 | &nbsp;&nbsp; 814702 | &nbsp;&nbsp;&nbsp; 15247206 | &nbsp;&nbsp; 2319180 | &nbsp;&nbsp;&nbsp;&nbsp; 41233712 |
|  | (1449564) | $(29249942) | &nbsp;&nbsp;&nbsp;&nbsp;5013045 | &nbsp;&nbsp; $89772806 | &nbsp;&nbsp;&nbsp; (568060) | $(11672658) | &nbsp;&nbsp; 4019874 | &nbsp;&nbsp; $70634667 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;250343 | $5899239 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;498499 | &nbsp;&nbsp;$10464915 | &nbsp;&nbsp; 261600 | $5335824 | &nbsp;&nbsp; 452686 | &nbsp;&nbsp;$8220810 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; — | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp; 1 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46164 | &nbsp;&nbsp;&nbsp; 1063987 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42474 | &nbsp;&nbsp;&nbsp;&nbsp; 877810 | &nbsp;&nbsp; 25784 | &nbsp;&nbsp;&nbsp; 516792 | &nbsp;&nbsp; 32081 | &nbsp;&nbsp;&nbsp;&nbsp; 572690 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;73767 | &nbsp;&nbsp;&nbsp; 1746238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;305222 | &nbsp;&nbsp;&nbsp;&nbsp; 6540076 | &nbsp;&nbsp; 27663 | &nbsp;&nbsp;&nbsp; 559467 | &nbsp;&nbsp; 141997 | &nbsp;&nbsp;&nbsp;&nbsp; 2578594 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6627 | &nbsp;&nbsp;&nbsp; 153296 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8245 | &nbsp;&nbsp;&nbsp;&nbsp; 170195 | &nbsp;&nbsp; 33417 | &nbsp;&nbsp;&nbsp; 673612 | &nbsp;&nbsp; 31344 | &nbsp;&nbsp;&nbsp;&nbsp; 563497 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;155151 | &nbsp;&nbsp;&nbsp; 3609203 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;221963 | &nbsp;&nbsp;&nbsp;&nbsp; 4604732 | &nbsp;&nbsp; 177510 | &nbsp;&nbsp;&nbsp; 3597276 | &nbsp;&nbsp; 184668 | &nbsp;&nbsp;&nbsp;&nbsp; 3350254 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;1391520 | &nbsp;&nbsp;&nbsp; 32616266 | &nbsp;&nbsp;&nbsp;&nbsp;1806883 | &nbsp;&nbsp;&nbsp;&nbsp; 37591194 | &nbsp;&nbsp; 1297525 | &nbsp;&nbsp;&nbsp; 26448100 | &nbsp;&nbsp; 1703476 | &nbsp;&nbsp;&nbsp;&nbsp; 30808082 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;256018 | &nbsp;&nbsp;&nbsp; 6057367 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;671222 | &nbsp;&nbsp;&nbsp;&nbsp; 14262529 | &nbsp;&nbsp; 168939 | &nbsp;&nbsp;&nbsp; 3488758 | &nbsp;&nbsp; 308798 | &nbsp;&nbsp;&nbsp;&nbsp; 5687609 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;2692574 | &nbsp;&nbsp;&nbsp; 63825076 | &nbsp;&nbsp;&nbsp;&nbsp;4412784 | &nbsp;&nbsp;&nbsp;&nbsp; 94359399 | &nbsp;&nbsp; 2558127 | &nbsp;&nbsp;&nbsp; 52534427 | &nbsp;&nbsp; 3582057 | &nbsp;&nbsp;&nbsp;&nbsp; 66134754 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;4872164 | $114970672 | &nbsp;&nbsp;&nbsp;&nbsp;7967292 | &nbsp;&nbsp; $168870850 | &nbsp;&nbsp; 4550565 | &nbsp;&nbsp;&nbsp;&nbsp;$93154256 | &nbsp;&nbsp; 6437107 | &nbsp;&nbsp; $117916291 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2050 Fund - continued** | **MFS Lifetime 2050 Fund - continued** | **MFS Lifetime 2050 Fund - continued** | **MFS Lifetime 2050 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2055 Fund - continued** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares issued to shareholders in<br> reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67032 | $1571222 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46147 | &nbsp;&nbsp;$991233 | &nbsp;&nbsp; 42633 | $862456 | &nbsp;&nbsp; 30445 | &nbsp;&nbsp;$562927 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;824 | &nbsp;&nbsp;&nbsp; 19174 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;752 | &nbsp;&nbsp;&nbsp;&nbsp; 16004 | &nbsp;&nbsp; 608 | &nbsp;&nbsp;&nbsp; 12326 | &nbsp;&nbsp; 565 | &nbsp;&nbsp;&nbsp;&nbsp; 10463 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6739 | &nbsp;&nbsp;&nbsp; 154316 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4575 | &nbsp;&nbsp;&nbsp;&nbsp; 96111 | &nbsp;&nbsp; 5045 | &nbsp;&nbsp;&nbsp; 100749 | &nbsp;&nbsp; 3779 | &nbsp;&nbsp;&nbsp;&nbsp; 69038 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15792 | &nbsp;&nbsp;&nbsp; 370165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7892 | &nbsp;&nbsp;&nbsp;&nbsp; 169529 | &nbsp;&nbsp; 8823 | &nbsp;&nbsp;&nbsp; 178574 | &nbsp;&nbsp; 5373 | &nbsp;&nbsp;&nbsp;&nbsp; 99394 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1487 | &nbsp;&nbsp;&nbsp; 34206 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;904 | &nbsp;&nbsp;&nbsp;&nbsp; 19093 | &nbsp;&nbsp; 3450 | &nbsp;&nbsp;&nbsp; 68973 | &nbsp;&nbsp; 2018 | &nbsp;&nbsp;&nbsp;&nbsp; 36957 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30208 | &nbsp;&nbsp;&nbsp; 700524 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23136 | &nbsp;&nbsp;&nbsp;&nbsp; 491870 | &nbsp;&nbsp; 19420 | &nbsp;&nbsp;&nbsp; 393060 | &nbsp;&nbsp; 14437 | &nbsp;&nbsp;&nbsp;&nbsp; 267237 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;291045 | &nbsp;&nbsp;&nbsp; 6758067 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;222629 | &nbsp;&nbsp;&nbsp;&nbsp; 4737550 | &nbsp;&nbsp; 214942 | &nbsp;&nbsp;&nbsp; 4348269 | &nbsp;&nbsp; 171338 | &nbsp;&nbsp;&nbsp;&nbsp; 3169752 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63244 | &nbsp;&nbsp;&nbsp; 1483697 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;67512 | &nbsp;&nbsp;&nbsp;&nbsp; 1450164 | &nbsp;&nbsp; 24077 | &nbsp;&nbsp;&nbsp; 492125 | &nbsp;&nbsp; 21764 | &nbsp;&nbsp;&nbsp;&nbsp; 406558 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;564581 | &nbsp;&nbsp;&nbsp; 13216852 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;371385 | &nbsp;&nbsp;&nbsp;&nbsp; 7966216 | &nbsp;&nbsp; 423422 | &nbsp;&nbsp;&nbsp; 8642040 | &nbsp;&nbsp; 298627 | &nbsp;&nbsp;&nbsp;&nbsp; 5569392 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;1040952 | &nbsp;&nbsp;&nbsp;&nbsp;$24308223 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;744932 | &nbsp;&nbsp; $15937770 | &nbsp;&nbsp; 742420 | &nbsp;&nbsp;&nbsp;&nbsp;$15098572 | &nbsp;&nbsp; 548346 | &nbsp;&nbsp; $10191718 |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;(292857) | $(6942116) | &nbsp;&nbsp; (220339) | &nbsp;&nbsp;$(4700869) | &nbsp;&nbsp;&nbsp; (442898) | $(9161299) | &nbsp;&nbsp;&nbsp; (234153) | &nbsp;&nbsp;$(4332340) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(10341) | &nbsp;&nbsp;&nbsp; (242582) | &nbsp;&nbsp; (20999) | &nbsp;&nbsp;&nbsp;&nbsp; (430749) | &nbsp;&nbsp;&nbsp; (6078) | &nbsp;&nbsp;&nbsp; (120850) | &nbsp;&nbsp;&nbsp; (9602) | &nbsp;&nbsp;&nbsp;&nbsp; (178417) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(64855) | &nbsp;&nbsp;&nbsp; (1491207) | &nbsp;&nbsp; (32511) | &nbsp;&nbsp;&nbsp;&nbsp; (674738) | &nbsp;&nbsp;&nbsp; (39352) | &nbsp;&nbsp;&nbsp; (786875) | &nbsp;&nbsp;&nbsp; (34307) | &nbsp;&nbsp;&nbsp;&nbsp; (613349) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;(105138) | &nbsp;&nbsp;&nbsp; (2466867) | &nbsp;&nbsp; (81865) | &nbsp;&nbsp;&nbsp;&nbsp; (1790936) | &nbsp;&nbsp;&nbsp; (35727) | &nbsp;&nbsp;&nbsp; (726076) | &nbsp;&nbsp;&nbsp; (23738) | &nbsp;&nbsp;&nbsp;&nbsp; (438807) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5558) | &nbsp;&nbsp;&nbsp; (126658) | &nbsp;&nbsp; (5716) | &nbsp;&nbsp;&nbsp;&nbsp; (116743) | &nbsp;&nbsp;&nbsp; (13305) | &nbsp;&nbsp;&nbsp; (270634) | &nbsp;&nbsp;&nbsp; (6670) | &nbsp;&nbsp;&nbsp;&nbsp; (116776) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(188622) | &nbsp;&nbsp;&nbsp; (4394532) | &nbsp;&nbsp; (443539) | &nbsp;&nbsp;&nbsp;&nbsp; (9215515) | &nbsp;&nbsp;&nbsp; (139133) | &nbsp;&nbsp;&nbsp; (2812274) | &nbsp;&nbsp;&nbsp; (220907) | &nbsp;&nbsp;&nbsp;&nbsp; (3960217) |
| &nbsp;&nbsp;&nbsp;Class R3 | (2403645) | &nbsp;&nbsp;&nbsp; (55955416) | &nbsp;&nbsp; (958581) | &nbsp;&nbsp;&nbsp;&nbsp; (20001069) | &nbsp;&nbsp;&nbsp;(1831187) | &nbsp;&nbsp;&nbsp; (37128745) | &nbsp;&nbsp;&nbsp; (690976) | &nbsp;&nbsp;&nbsp;&nbsp; (12557894) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(552469) | &nbsp;&nbsp;&nbsp; (13439891) | &nbsp;&nbsp; (1258510) | &nbsp;&nbsp;&nbsp;&nbsp; (27811457) | &nbsp;&nbsp;&nbsp; (193684) | &nbsp;&nbsp;&nbsp; (4081311) | &nbsp;&nbsp;&nbsp; (771917) | &nbsp;&nbsp;&nbsp;&nbsp; (14310867) |
| &nbsp;&nbsp;&nbsp;Class R6 | (2874899) | &nbsp;&nbsp;&nbsp; (68233231) | &nbsp;&nbsp; (1607005) | &nbsp;&nbsp;&nbsp;&nbsp; (33859285) | &nbsp;&nbsp;&nbsp;(2159615) | &nbsp;&nbsp;&nbsp; (44612901) | &nbsp;&nbsp;&nbsp;(1484948) | &nbsp;&nbsp;&nbsp;&nbsp; (27248120) |
|  | (6498384) | $(153292500) | &nbsp;&nbsp; (4629065) | &nbsp;&nbsp; $(98601361) | &nbsp;&nbsp;&nbsp;(4860979) | $(99700965) | &nbsp;&nbsp;&nbsp;(3477218) | &nbsp;&nbsp; $(63756787) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24518 | $528345 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;324307 | &nbsp;&nbsp;$6755279 | &nbsp;&nbsp;&nbsp; (138665) | $(2963019) | &nbsp;&nbsp; 248978 | &nbsp;&nbsp;$4451397 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9517) | &nbsp;&nbsp;&nbsp; (223408) | &nbsp;&nbsp; (20247) | &nbsp;&nbsp;&nbsp;&nbsp; (414745) | &nbsp;&nbsp;&nbsp; (5470) | &nbsp;&nbsp;&nbsp; (108524) | &nbsp;&nbsp;&nbsp; (9037) | &nbsp;&nbsp;&nbsp;&nbsp; (167953) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11952) | &nbsp;&nbsp;&nbsp; (272904) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14538 | &nbsp;&nbsp;&nbsp;&nbsp; 299183 | &nbsp;&nbsp;&nbsp; (8523) | &nbsp;&nbsp;&nbsp; (169334) | &nbsp;&nbsp; 1553 | &nbsp;&nbsp;&nbsp;&nbsp; 28379 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(15579) | &nbsp;&nbsp;&nbsp; (350464) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;231249 | &nbsp;&nbsp;&nbsp;&nbsp; 4918669 | &nbsp;&nbsp; 759 | &nbsp;&nbsp;&nbsp; 11965 | &nbsp;&nbsp; 123632 | &nbsp;&nbsp;&nbsp;&nbsp; 2239181 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2556 | &nbsp;&nbsp;&nbsp; 60844 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3433 | &nbsp;&nbsp;&nbsp;&nbsp; 72545 | &nbsp;&nbsp; 23562 | &nbsp;&nbsp;&nbsp; 471951 | &nbsp;&nbsp; 26692 | &nbsp;&nbsp;&nbsp;&nbsp; 483678 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3263) | &nbsp;&nbsp;&nbsp; (84805) | &nbsp;&nbsp; (198440) | &nbsp;&nbsp;&nbsp;&nbsp; (4118913) | &nbsp;&nbsp; 57797 | &nbsp;&nbsp;&nbsp; 1178062 | &nbsp;&nbsp;&nbsp; (21802) | &nbsp;&nbsp;&nbsp;&nbsp; (342726) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;(721080) | &nbsp;&nbsp;&nbsp; (16581083) | &nbsp;&nbsp;&nbsp;&nbsp;1070931 | &nbsp;&nbsp;&nbsp;&nbsp; 22327675 | &nbsp;&nbsp;&nbsp; (318720) | &nbsp;&nbsp;&nbsp; (6332376) | &nbsp;&nbsp; 1183838 | &nbsp;&nbsp;&nbsp;&nbsp; 21419940 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(233207) | &nbsp;&nbsp;&nbsp; (5898827) | &nbsp;&nbsp; (519776) | &nbsp;&nbsp;&nbsp;&nbsp; (12098764) | &nbsp;&nbsp;&nbsp; (668) | &nbsp;&nbsp;&nbsp; (100428) | &nbsp;&nbsp;&nbsp; (441355) | &nbsp;&nbsp;&nbsp;&nbsp; (8216700) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;382256 | &nbsp;&nbsp;&nbsp; 8808697 | &nbsp;&nbsp;&nbsp;&nbsp;3177164 | &nbsp;&nbsp;&nbsp;&nbsp; 68466330 | &nbsp;&nbsp; 821934 | &nbsp;&nbsp;&nbsp; 16563566 | &nbsp;&nbsp; 2395736 | &nbsp;&nbsp;&nbsp;&nbsp; 44456026 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;(585268) | $(14013605) | &nbsp;&nbsp;&nbsp;&nbsp;4083159 | &nbsp;&nbsp; $86207259 | &nbsp;&nbsp; 432006 | &nbsp;&nbsp;&nbsp;&nbsp;$8551863 | &nbsp;&nbsp; 3508235 | &nbsp;&nbsp; $64351222 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;255431 | $4174027 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;330365 | &nbsp;&nbsp;$4802584 | &nbsp;&nbsp; 131513 | $1336020 | &nbsp;&nbsp; 84330 | &nbsp;&nbsp;$755593 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24092 | &nbsp;&nbsp;&nbsp; 390147 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25886 | &nbsp;&nbsp;&nbsp;&nbsp; 373801 | &nbsp;&nbsp; 12423 | &nbsp;&nbsp;&nbsp; 124667 | &nbsp;&nbsp; 10709 | &nbsp;&nbsp;&nbsp;&nbsp; 95053 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24517 | &nbsp;&nbsp;&nbsp; 413613 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9681 | &nbsp;&nbsp;&nbsp;&nbsp; 140686 | &nbsp;&nbsp; 24542 | &nbsp;&nbsp;&nbsp; 251756 | &nbsp;&nbsp; 2831 | &nbsp;&nbsp;&nbsp;&nbsp; 25327 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;102284 | &nbsp;&nbsp;&nbsp; 1675585 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;115076 | &nbsp;&nbsp;&nbsp;&nbsp; 1671886 | &nbsp;&nbsp; 142227 | &nbsp;&nbsp;&nbsp; 1377243 | &nbsp;&nbsp; 15251 | &nbsp;&nbsp;&nbsp;&nbsp; 135941 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;1379541 | &nbsp;&nbsp;&nbsp; 22658595 | &nbsp;&nbsp;&nbsp;&nbsp;1692201 | &nbsp;&nbsp;&nbsp;&nbsp; 24590194 | &nbsp;&nbsp; 684934 | &nbsp;&nbsp;&nbsp; 6868477 | &nbsp;&nbsp; 706776 | &nbsp;&nbsp;&nbsp;&nbsp; 6179087 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;121181 | &nbsp;&nbsp;&nbsp; 2003939 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;217560 | &nbsp;&nbsp;&nbsp;&nbsp; 3194772 | &nbsp;&nbsp; 42481 | &nbsp;&nbsp;&nbsp; 438488 | &nbsp;&nbsp; 76583 | &nbsp;&nbsp;&nbsp;&nbsp; 701316 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;2501104 | &nbsp;&nbsp;&nbsp; 41383360 | &nbsp;&nbsp;&nbsp;&nbsp;3276896 | &nbsp;&nbsp;&nbsp;&nbsp; 48681073 | &nbsp;&nbsp; 1182786 | &nbsp;&nbsp;&nbsp; 11897351 | &nbsp;&nbsp; 854619 | &nbsp;&nbsp;&nbsp;&nbsp; 7723168 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;4408150 | &nbsp;&nbsp;&nbsp;&nbsp;$72699266 | &nbsp;&nbsp;&nbsp;&nbsp;5667665 | &nbsp;&nbsp; $83454996 | &nbsp;&nbsp; 2220906 | &nbsp;&nbsp;&nbsp;&nbsp;$22294002 | &nbsp;&nbsp; 1751099 | &nbsp;&nbsp; $15615485 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund - continued** | &nbsp;&nbsp;**MFS Lifetime 2065 Fund - continued** |
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | **Amount** | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | **Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares issued to shareholders in<br> reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39194 | $640043 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26950 | &nbsp;&nbsp;$400479 | &nbsp;&nbsp; 5557 | $55684 | &nbsp;&nbsp; 1994 | &nbsp;&nbsp;$18104 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;314 | &nbsp;&nbsp;&nbsp; 5147 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;198 | &nbsp;&nbsp;&nbsp;&nbsp; 2951 | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; — | &nbsp;&nbsp; — |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2937 | &nbsp;&nbsp;&nbsp; 47552 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1993 | &nbsp;&nbsp;&nbsp;&nbsp; 29379 | &nbsp;&nbsp; 729 | &nbsp;&nbsp;&nbsp; 7274 | &nbsp;&nbsp; 198 | &nbsp;&nbsp;&nbsp;&nbsp; 1798 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1601 | &nbsp;&nbsp;&nbsp; 26365 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1071 | &nbsp;&nbsp;&nbsp;&nbsp; 16051 | &nbsp;&nbsp; 448 | &nbsp;&nbsp;&nbsp; 4499 | &nbsp;&nbsp; 206 | &nbsp;&nbsp;&nbsp;&nbsp; 1874 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;230 | &nbsp;&nbsp;&nbsp; 3781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;173 | &nbsp;&nbsp;&nbsp;&nbsp; 2592 | &nbsp;&nbsp; 166 | &nbsp;&nbsp;&nbsp; 1666 | &nbsp;&nbsp; 79 | &nbsp;&nbsp;&nbsp;&nbsp; 717 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8456 | &nbsp;&nbsp;&nbsp; 138005 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5090 | &nbsp;&nbsp;&nbsp;&nbsp; 75636 | &nbsp;&nbsp; 1310 | &nbsp;&nbsp;&nbsp; 13113 | &nbsp;&nbsp; 374 | &nbsp;&nbsp;&nbsp;&nbsp; 3392 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;145375 | &nbsp;&nbsp;&nbsp; 2376888 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;112198 | &nbsp;&nbsp;&nbsp;&nbsp; 1669507 | &nbsp;&nbsp; 33732 | &nbsp;&nbsp;&nbsp; 337999 | &nbsp;&nbsp; 12018 | &nbsp;&nbsp;&nbsp;&nbsp; 109122 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11986 | &nbsp;&nbsp;&nbsp; 197292 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13310 | &nbsp;&nbsp;&nbsp;&nbsp; 199256 | &nbsp;&nbsp; 1983 | &nbsp;&nbsp;&nbsp; 19909 | &nbsp;&nbsp; 1852 | &nbsp;&nbsp;&nbsp;&nbsp; 16855 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;247187 | &nbsp;&nbsp;&nbsp; 4078592 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;163715 | &nbsp;&nbsp;&nbsp;&nbsp; 2457355 | &nbsp;&nbsp; 45530 | &nbsp;&nbsp;&nbsp; 457579 | &nbsp;&nbsp; 14578 | &nbsp;&nbsp;&nbsp;&nbsp; 132658 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;457280 | &nbsp;&nbsp;&nbsp;&nbsp;$7513665 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;324698 | &nbsp;&nbsp; $4853206 | &nbsp;&nbsp; 89455 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$897723 | &nbsp;&nbsp; 31299 | &nbsp;&nbsp; $284520 |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;(171341) | $(2816180) | &nbsp;&nbsp; (158693) | &nbsp;&nbsp;$(2323292) | &nbsp;&nbsp;&nbsp; (65791) | $(666668) | &nbsp;&nbsp;&nbsp; (8798) | &nbsp;&nbsp;$(80800) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1023) | &nbsp;&nbsp;&nbsp; (16928) | &nbsp;&nbsp; (2616) | &nbsp;&nbsp;&nbsp;&nbsp; (37697) | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; — | &nbsp;&nbsp; — |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(18067) | &nbsp;&nbsp;&nbsp; (295365) | &nbsp;&nbsp; (10786) | &nbsp;&nbsp;&nbsp;&nbsp; (153639) | &nbsp;&nbsp;&nbsp; (1817) | &nbsp;&nbsp;&nbsp; (18142) | &nbsp;&nbsp;&nbsp; (2006) | &nbsp;&nbsp;&nbsp;&nbsp; (16778) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8069) | &nbsp;&nbsp;&nbsp; (136693) | &nbsp;&nbsp; (1964) | &nbsp;&nbsp;&nbsp;&nbsp; (29146) | &nbsp;&nbsp;&nbsp; (2691) | &nbsp;&nbsp;&nbsp; (26985) | &nbsp;&nbsp;&nbsp; (14) | &nbsp;&nbsp;&nbsp;&nbsp; (125) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(74827) | &nbsp;&nbsp;&nbsp; (1228605) | &nbsp;&nbsp; (66686) | &nbsp;&nbsp;&nbsp;&nbsp; (966549) | &nbsp;&nbsp;&nbsp; (14396) | &nbsp;&nbsp;&nbsp; (143381) | &nbsp;&nbsp;&nbsp; (229) | &nbsp;&nbsp;&nbsp;&nbsp; (2005) |
| &nbsp;&nbsp;&nbsp;Class R3 | (1507083) | &nbsp;&nbsp;&nbsp; (24549952) | &nbsp;&nbsp; (779084) | &nbsp;&nbsp;&nbsp;&nbsp; (11422857) | &nbsp;&nbsp;&nbsp; (320700) | &nbsp;&nbsp;&nbsp; (3207989) | &nbsp;&nbsp;&nbsp; (245779) | &nbsp;&nbsp;&nbsp;&nbsp; (2201249) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(71482) | &nbsp;&nbsp;&nbsp; (1176850) | &nbsp;&nbsp; (514994) | &nbsp;&nbsp;&nbsp;&nbsp; (7808611) | &nbsp;&nbsp;&nbsp; (2348) | &nbsp;&nbsp;&nbsp; (23546) | &nbsp;&nbsp;&nbsp; (95624) | &nbsp;&nbsp;&nbsp;&nbsp; (917601) |
| &nbsp;&nbsp;&nbsp;Class R6 | (2018052) | &nbsp;&nbsp;&nbsp; (33662738) | &nbsp;&nbsp; (1075189) | &nbsp;&nbsp;&nbsp;&nbsp; (15874911) | &nbsp;&nbsp;&nbsp; (532720) | &nbsp;&nbsp;&nbsp; (5405671) | &nbsp;&nbsp;&nbsp; (263822) | &nbsp;&nbsp;&nbsp;&nbsp; (2349995) |
|  | (3869944) | $(63883311) | &nbsp;&nbsp; (2610012) | &nbsp;&nbsp; $(38616702) | &nbsp;&nbsp;&nbsp; (940463) | &nbsp;&nbsp;&nbsp;&nbsp;$(9492382) | &nbsp;&nbsp;&nbsp; (616272) | &nbsp;&nbsp; $(5568553) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;123284 | $1997890 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;198622 | &nbsp;&nbsp;$2879771 | &nbsp;&nbsp; 71279 | $725036 | &nbsp;&nbsp; 77526 | &nbsp;&nbsp;$692897 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(709) | &nbsp;&nbsp;&nbsp; (11781) | &nbsp;&nbsp; (2418) | &nbsp;&nbsp;&nbsp;&nbsp; (34746) | &nbsp;&nbsp; — | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp; — | &nbsp;&nbsp; — |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8962 | &nbsp;&nbsp;&nbsp; 142334 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17093 | &nbsp;&nbsp;&nbsp;&nbsp; 249541 | &nbsp;&nbsp; 11335 | &nbsp;&nbsp;&nbsp; 113799 | &nbsp;&nbsp; 8901 | &nbsp;&nbsp;&nbsp;&nbsp; 80073 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18049 | &nbsp;&nbsp;&nbsp; 303285 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8788 | &nbsp;&nbsp;&nbsp;&nbsp; 127591 | &nbsp;&nbsp; 22299 | &nbsp;&nbsp;&nbsp; 229270 | &nbsp;&nbsp; 3023 | &nbsp;&nbsp;&nbsp;&nbsp; 27076 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;230 | &nbsp;&nbsp;&nbsp; 3781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;173 | &nbsp;&nbsp;&nbsp;&nbsp; 2592 | &nbsp;&nbsp; 166 | &nbsp;&nbsp;&nbsp; 1666 | &nbsp;&nbsp; 79 | &nbsp;&nbsp;&nbsp;&nbsp; 717 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35913 | &nbsp;&nbsp;&nbsp; 584985 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53480 | &nbsp;&nbsp;&nbsp;&nbsp; 780973 | &nbsp;&nbsp; 129141 | &nbsp;&nbsp;&nbsp; 1246975 | &nbsp;&nbsp; 15396 | &nbsp;&nbsp;&nbsp;&nbsp; 137328 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17833 | &nbsp;&nbsp;&nbsp; 485531 | &nbsp;&nbsp;&nbsp;&nbsp;1025315 | &nbsp;&nbsp;&nbsp;&nbsp; 14836844 | &nbsp;&nbsp; 397966 | &nbsp;&nbsp;&nbsp; 3998487 | &nbsp;&nbsp; 473015 | &nbsp;&nbsp;&nbsp;&nbsp; 4086960 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61685 | &nbsp;&nbsp;&nbsp; 1024381 | &nbsp;&nbsp; (284124) | &nbsp;&nbsp;&nbsp;&nbsp; (4414583) | &nbsp;&nbsp; 42116 | &nbsp;&nbsp;&nbsp; 434851 | &nbsp;&nbsp;&nbsp; (17189) | &nbsp;&nbsp;&nbsp;&nbsp; (199430) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;730239 | &nbsp;&nbsp;&nbsp; 11799214 | &nbsp;&nbsp;&nbsp;&nbsp;2365422 | &nbsp;&nbsp;&nbsp;&nbsp; 35263517 | &nbsp;&nbsp; 695596 | &nbsp;&nbsp;&nbsp; 6949259 | &nbsp;&nbsp; 605375 | &nbsp;&nbsp;&nbsp;&nbsp; 5505831 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;995486 | &nbsp;&nbsp;&nbsp;&nbsp;$16329620 | &nbsp;&nbsp;&nbsp;&nbsp;3382351 | &nbsp;&nbsp; $49691500 | &nbsp;&nbsp; 1369898 | &nbsp;&nbsp;&nbsp;&nbsp;$13699343 | &nbsp;&nbsp; 1166126 | &nbsp;&nbsp; $10331452 |

---

Effective June 1, 2019, purchases of each fund's Class B shares were closed to new and existing investors subject to certain exceptions. Effective September 29, 2023, purchases of each fund's Class R1 and Class R2 shares were closed to new eligible investors.

(6) Line of Credit

Each fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by each fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, each fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund,

------

Notes to Financial Statements - continued

based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended April 30, 2025, each fund's commitment fee and interest expense were as follows and are included in "Miscellaneous" expense in the Statements of Operations:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> Income Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2025 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2030 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2035 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2040 Fund** |
| Commitment Fee | $3200 | &nbsp;&nbsp;$1933 | &nbsp;&nbsp;$4316 | &nbsp;&nbsp;$3211 | &nbsp;&nbsp;$4121 |
| Interest Expense |  | &nbsp;&nbsp;— | &nbsp;&nbsp;— | &nbsp;&nbsp;— | &nbsp;&nbsp;— |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime<br> 2045 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2050 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2055 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2060 Fund** | &nbsp;&nbsp;**MFS Lifetime<br> 2065 Fund** |
| Commitment Fee | $2740 | &nbsp;&nbsp;$3124 | &nbsp;&nbsp;$2050 | &nbsp;&nbsp;$1101 | &nbsp;&nbsp;$132 |
| Interest Expense |  | &nbsp;&nbsp;— | &nbsp;&nbsp;— | &nbsp;&nbsp;— | &nbsp;&nbsp;— |

---

(7) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the year ended April 30, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$9979138 | &nbsp;&nbsp;&nbsp;$1756801 | &nbsp;&nbsp;&nbsp;&nbsp;$2871426 | &nbsp;&nbsp;&nbsp;$787497 | &nbsp;&nbsp;&nbsp;&nbsp;$(674967) | &nbsp;&nbsp;&nbsp;&nbsp;$8977043 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;9914674 | &nbsp;&nbsp;&nbsp;&nbsp;1908241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3853244 | &nbsp;&nbsp;&nbsp;1517040 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(503374) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8983337 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;15517979 | &nbsp;&nbsp;&nbsp;&nbsp;1741346 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5304296 | &nbsp;&nbsp;&nbsp;1012088 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;859922 | &nbsp;&nbsp;&nbsp;&nbsp;13827039 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;18411563 | &nbsp;&nbsp;&nbsp;&nbsp;3821046 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5185985 | &nbsp;&nbsp;&nbsp;1385318 | &nbsp;&nbsp;&nbsp;(1869114) | &nbsp;&nbsp;&nbsp;&nbsp;16562828 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;6116310 | &nbsp;&nbsp;&nbsp;&nbsp;1546570 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1459713 | &nbsp;&nbsp;&nbsp;&nbsp;355250 | &nbsp;&nbsp;&nbsp;(1044304) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5514113 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;12353463 | &nbsp;&nbsp;&nbsp;&nbsp;2027262 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2934821 | &nbsp;&nbsp;&nbsp;&nbsp;679356 | &nbsp;&nbsp;&nbsp;(1081201) | &nbsp;&nbsp;&nbsp;&nbsp;11044059 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;12293959 | &nbsp;&nbsp;&nbsp;&nbsp;1493901 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3244178 | &nbsp;&nbsp;&nbsp;&nbsp;(413849) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;714461 | &nbsp;&nbsp;&nbsp;&nbsp;10844294 |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;6258015 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;498258 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1324107 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(71503) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;156397 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5517060 |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;6207107 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;734682 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1656641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(81723) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;317625 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5521050 |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;43712819 | &nbsp;&nbsp;&nbsp;&nbsp;2127152 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8743288 | &nbsp;&nbsp;&nbsp;&nbsp;(830831) | &nbsp;&nbsp;&nbsp;&nbsp;2346374 | &nbsp;&nbsp;&nbsp;&nbsp;38612226 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;12104575 | &nbsp;&nbsp;&nbsp;&nbsp;1676863 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3166957 | &nbsp;&nbsp;&nbsp;&nbsp;269225 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;166462 | &nbsp;&nbsp;&nbsp;&nbsp;11050168 |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;58014294 | &nbsp;&nbsp;&nbsp;&nbsp;4780285 | &nbsp;&nbsp;&nbsp;&nbsp;12677274 | &nbsp;&nbsp;(1801498) | &nbsp;&nbsp;&nbsp;&nbsp;4087187 | &nbsp;&nbsp;&nbsp;&nbsp;52402994 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;9855908 | &nbsp;&nbsp;&nbsp;&nbsp;2494804 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3402749 | &nbsp;&nbsp;&nbsp;1845645 | &nbsp;&nbsp;&nbsp;(1810258) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8983350 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;12547730 | &nbsp;&nbsp;&nbsp;&nbsp;1015811 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2665488 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(87510) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;222327 | &nbsp;&nbsp;&nbsp;&nbsp;11032870 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;61646782 | &nbsp;&nbsp;&nbsp;&nbsp;4485741 | &nbsp;&nbsp;&nbsp;&nbsp;12992484 | &nbsp;&nbsp;(1633924) | &nbsp;&nbsp;&nbsp;&nbsp;3650116 | &nbsp;&nbsp;&nbsp;&nbsp;55156231 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;18701436 | &nbsp;&nbsp;&nbsp;19813324 | &nbsp;&nbsp;&nbsp;&nbsp;24939255 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(221) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;919 | &nbsp;&nbsp;&nbsp;&nbsp;13576203 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;3094429 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;431954 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1075093 | &nbsp;&nbsp;&nbsp;&nbsp;379997 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(66299) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764988 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;3089232 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;601558 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1015566 | &nbsp;&nbsp;&nbsp;&nbsp;185967 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(96972) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764219 |
| MFS Limited Maturity Fund | &nbsp;&nbsp;125089385 | &nbsp;&nbsp;&nbsp;&nbsp;7681136 | &nbsp;&nbsp;&nbsp;&nbsp;25836674 | &nbsp;&nbsp;&nbsp;&nbsp;(649106) | &nbsp;&nbsp;&nbsp;&nbsp;3998723 | &nbsp;&nbsp;&nbsp;110283464 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;9102690 | &nbsp;&nbsp;&nbsp;&nbsp;1742007 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2665701 | &nbsp;&nbsp;&nbsp;1319679 | &nbsp;&nbsp;&nbsp;(1201055) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8297620 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;9271917 | &nbsp;&nbsp;&nbsp;&nbsp;1794536 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2288725 | &nbsp;&nbsp;&nbsp;1367356 | &nbsp;&nbsp;&nbsp;(1870163) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8274921 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;3037542 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;487382 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;787731 | &nbsp;&nbsp;&nbsp;&nbsp;229762 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(202563) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764392 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;3080190 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;642659 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;834688 | &nbsp;&nbsp;&nbsp;&nbsp;284438 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(426790) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2745809 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;9940874 | &nbsp;&nbsp;&nbsp;&nbsp;1773134 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2618913 | &nbsp;&nbsp;&nbsp;1325361 | &nbsp;&nbsp;&nbsp;(1442259) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8978197 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;9305847 | &nbsp;&nbsp;&nbsp;&nbsp;1023325 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2739916 | &nbsp;&nbsp;&nbsp;&nbsp;793164 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(87463) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8294957 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;120472917 | &nbsp;&nbsp;&nbsp;&nbsp;8543405 | &nbsp;&nbsp;&nbsp;&nbsp;25934174 | &nbsp;&nbsp;(2808358) | &nbsp;&nbsp;&nbsp;&nbsp;7281821 | &nbsp;&nbsp;&nbsp;107555611 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;12385948 | &nbsp;&nbsp;&nbsp;&nbsp;1724661 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3070051 | &nbsp;&nbsp;&nbsp;1115372 | &nbsp;&nbsp;&nbsp;(1111118) | &nbsp;&nbsp;&nbsp;&nbsp;11044812 |
|  | $621506723 | $78367844 | $165289138 | $6473992 | $10314434 | $551373855 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$223544 | &nbsp;&nbsp;&nbsp;$673867 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;121484 | &nbsp;&nbsp;&nbsp;&nbsp;327166 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;497525 | &nbsp;&nbsp;&nbsp;&nbsp;178488 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;581774 | &nbsp;&nbsp;&nbsp;1083264 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91608 | &nbsp;&nbsp;&nbsp;&nbsp;309942 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;416017 | &nbsp;&nbsp;&nbsp;&nbsp;742407 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;394689 |  |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;408017 |  |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;339898 |  |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;1395319 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;293270 |  |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;2252616 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14902 | &nbsp;&nbsp;&nbsp;1061144 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;771099 |  |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;2538483 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;806804 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47465 | &nbsp;&nbsp;&nbsp;&nbsp;124401 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65137 | &nbsp;&nbsp;&nbsp;&nbsp;270287 |
| MFS Limited Maturity Fund | &nbsp;&nbsp;&nbsp;&nbsp;5326386 |  |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;559337 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;155815 | &nbsp;&nbsp;&nbsp;&nbsp;683113 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82225 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94980 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;81556 | &nbsp;&nbsp;&nbsp;&nbsp;806879 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;186009 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;5163927 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;238836 | &nbsp;&nbsp;&nbsp;&nbsp;780920 |
|  | $22494405 | $7696195 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$7327797 | &nbsp;&nbsp;&nbsp;$1448317 | &nbsp;&nbsp;&nbsp;&nbsp;$2898751 | &nbsp;&nbsp;&nbsp;$742949 | &nbsp;&nbsp;&nbsp;$(565550) | &nbsp;&nbsp;&nbsp;&nbsp;$6054762 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;7305242 | &nbsp;&nbsp;&nbsp;&nbsp;1651911 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3698004 | &nbsp;&nbsp;&nbsp;1546873 | &nbsp;&nbsp;&nbsp;&nbsp;(711744) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6094278 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;11302319 | &nbsp;&nbsp;&nbsp;&nbsp;1213773 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4435168 | &nbsp;&nbsp;&nbsp;&nbsp;892360 | &nbsp;&nbsp;&nbsp;&nbsp;424206 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9397490 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;12598388 | &nbsp;&nbsp;&nbsp;&nbsp;3016658 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4529479 | &nbsp;&nbsp;&nbsp;1049064 | &nbsp;&nbsp;(1255773) | &nbsp;&nbsp;&nbsp;&nbsp;10878858 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;3835277 | &nbsp;&nbsp;&nbsp;&nbsp;1301023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1240184 | &nbsp;&nbsp;&nbsp;&nbsp;155093 | &nbsp;&nbsp;&nbsp;&nbsp;(558395) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3492814 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;8792175 | &nbsp;&nbsp;&nbsp;&nbsp;1584668 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2815153 | &nbsp;&nbsp;&nbsp;&nbsp;594850 | &nbsp;&nbsp;&nbsp;&nbsp;(819324) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7337216 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;7667872 | &nbsp;&nbsp;&nbsp;&nbsp;1273447 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2341636 | &nbsp;&nbsp;&nbsp;&nbsp;(317104) | &nbsp;&nbsp;&nbsp;&nbsp;503481 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6786060 |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;5007364 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;373553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1642916 | &nbsp;&nbsp;&nbsp;&nbsp;(258044) | &nbsp;&nbsp;&nbsp;&nbsp;336253 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3816210 |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;4988572 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;468767 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1747976 | &nbsp;&nbsp;&nbsp;&nbsp;(170749) | &nbsp;&nbsp;&nbsp;&nbsp;340436 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3879050 |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;27164495 | &nbsp;&nbsp;&nbsp;&nbsp;2128958 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5696881 | &nbsp;&nbsp;&nbsp;&nbsp;(560819) | &nbsp;&nbsp;&nbsp;1509704 | &nbsp;&nbsp;&nbsp;&nbsp;24545457 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;7631272 | &nbsp;&nbsp;&nbsp;&nbsp;1472599 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2336111 | &nbsp;&nbsp;&nbsp;&nbsp;109990 | &nbsp;&nbsp;&nbsp;&nbsp;187008 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7064758 |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;36046954 | &nbsp;&nbsp;&nbsp;&nbsp;4072787 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8222067 | &nbsp;&nbsp;(1186681) | &nbsp;&nbsp;&nbsp;2580508 | &nbsp;&nbsp;&nbsp;&nbsp;33291501 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;7286028 | &nbsp;&nbsp;&nbsp;&nbsp;2029484 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3371746 | &nbsp;&nbsp;&nbsp;1571323 | &nbsp;&nbsp;(1426151) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6088938 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;10015561 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;687786 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3198086 | &nbsp;&nbsp;&nbsp;&nbsp;(204187) | &nbsp;&nbsp;&nbsp;&nbsp;337452 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7638526 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;38266718 | &nbsp;&nbsp;&nbsp;&nbsp;3862269 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8368245 | &nbsp;&nbsp;(1153716) | &nbsp;&nbsp;&nbsp;2374761 | &nbsp;&nbsp;&nbsp;&nbsp;34981787 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;11641572 | &nbsp;&nbsp;&nbsp;10655757 | &nbsp;&nbsp;&nbsp;&nbsp;13603009 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;115 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;499 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8694934 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;2475045 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;307099 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1088888 | &nbsp;&nbsp;&nbsp;&nbsp;327088 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(81797) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1938547 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;2469943 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;400683 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1002431 | &nbsp;&nbsp;&nbsp;&nbsp;173363 | &nbsp;&nbsp;&nbsp;&nbsp;(104171) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1937387 |
| MFS Limited Maturity Fund | &nbsp;&nbsp;&nbsp;&nbsp;66538982 | &nbsp;&nbsp;&nbsp;&nbsp;8291882 | &nbsp;&nbsp;&nbsp;&nbsp;10141923 | &nbsp;&nbsp;&nbsp;&nbsp;(276990) | &nbsp;&nbsp;&nbsp;2135917 | &nbsp;&nbsp;&nbsp;&nbsp;66547868 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;6278821 | &nbsp;&nbsp;&nbsp;&nbsp;1354229 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2253076 | &nbsp;&nbsp;&nbsp;&nbsp;853317 | &nbsp;&nbsp;&nbsp;&nbsp;(726043) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5507248 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;6336229 | &nbsp;&nbsp;&nbsp;&nbsp;1373234 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2027902 | &nbsp;&nbsp;&nbsp;&nbsp;686222 | &nbsp;&nbsp;&nbsp;&nbsp;(968258) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5399525 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;1911638 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;468300 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;637872 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76494 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(47010) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1771550 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;1919903 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;515668 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;617617 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58025 | &nbsp;&nbsp;&nbsp;&nbsp;(136568) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1739411 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;7318848 | &nbsp;&nbsp;&nbsp;&nbsp;1451268 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2721992 | &nbsp;&nbsp;&nbsp;&nbsp;804057 | &nbsp;&nbsp;&nbsp;&nbsp;(796473) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6055708 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;6337042 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;749087 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2069798 | &nbsp;&nbsp;&nbsp;&nbsp;401116 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72177 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5489624 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;69361327 | &nbsp;&nbsp;&nbsp;&nbsp;8029166 | &nbsp;&nbsp;&nbsp;&nbsp;13465689 | &nbsp;&nbsp;(1837629) | &nbsp;&nbsp;&nbsp;4391752 | &nbsp;&nbsp;&nbsp;&nbsp;66478927 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;8801165 | &nbsp;&nbsp;&nbsp;&nbsp;1371211 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2884528 | &nbsp;&nbsp;&nbsp;&nbsp;615667 | &nbsp;&nbsp;&nbsp;&nbsp;(570907) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7332608 |
|  | $386626549 | $61553584 | $109057128 | $4692047 | $6425990 | $350241042 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2025 Fund - continued** | **MFS Lifetime 2025 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$154963 | &nbsp;&nbsp;&nbsp;$467132 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;84032 | &nbsp;&nbsp;&nbsp;&nbsp;226306 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;345362 | &nbsp;&nbsp;&nbsp;&nbsp;123899 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;387868 | &nbsp;&nbsp;&nbsp;&nbsp;722213 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58047 | &nbsp;&nbsp;&nbsp;&nbsp;196394 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;284816 | &nbsp;&nbsp;&nbsp;&nbsp;508271 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;251312 |  |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;305343 |  |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;253903 |  |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;874301 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;184517 |  |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;1412017 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10949 | &nbsp;&nbsp;&nbsp;&nbsp;730651 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;575175 |  |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;1597868 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;508354 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34847 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91328 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47804 | &nbsp;&nbsp;&nbsp;&nbsp;198360 |
| MFS Limited Maturity Fund | &nbsp;&nbsp;&nbsp;&nbsp;3017319 |  |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;370487 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;103856 | &nbsp;&nbsp;&nbsp;&nbsp;455318 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52076 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60132 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56577 | &nbsp;&nbsp;&nbsp;&nbsp;559756 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;124247 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;3078761 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;164081 | &nbsp;&nbsp;&nbsp;&nbsp;534251 |
|  | $13968395 | $5244498 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$22792219 | &nbsp;&nbsp;&nbsp;&nbsp;$3564024 | &nbsp;&nbsp;&nbsp;&nbsp;$6874543 | &nbsp;&nbsp;&nbsp;$1987545 | $(1657369) | &nbsp;&nbsp;&nbsp;$19811876 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;22633121 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3963158 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9325224 | &nbsp;&nbsp;&nbsp;&nbsp;3688523 | &nbsp;&nbsp;&nbsp;(1312935) | &nbsp;&nbsp;&nbsp;&nbsp;19646643 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;36599212 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3342099 | &nbsp;&nbsp;&nbsp;&nbsp;12947826 | &nbsp;&nbsp;&nbsp;&nbsp;2676432 | &nbsp;&nbsp;&nbsp;&nbsp;1685093 | &nbsp;&nbsp;&nbsp;&nbsp;31355010 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;38320749 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5783632 | &nbsp;&nbsp;&nbsp;&nbsp;12152951 | &nbsp;&nbsp;&nbsp;&nbsp;3488294 | &nbsp;&nbsp;&nbsp;(4209837) | &nbsp;&nbsp;&nbsp;&nbsp;31229887 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;8897440 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1823891 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2465833 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;552941 | &nbsp;&nbsp;&nbsp;(1474997) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7333442 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;26023513 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3707695 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6076501 | &nbsp;&nbsp;&nbsp;&nbsp;1587127 | &nbsp;&nbsp;&nbsp;(2388247) | &nbsp;&nbsp;&nbsp;&nbsp;22853587 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;18060680 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1715362 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4925696 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(696033) | &nbsp;&nbsp;&nbsp;&nbsp;1101100 | &nbsp;&nbsp;&nbsp;&nbsp;15255413 |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;18175574 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1494275 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4370416 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(845359) | &nbsp;&nbsp;&nbsp;&nbsp;1093679 | &nbsp;&nbsp;&nbsp;&nbsp;15547753 |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;15560478 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2331570 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3497015 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(459656) | &nbsp;&nbsp;&nbsp;&nbsp;1082880 | &nbsp;&nbsp;&nbsp;&nbsp;15018257 |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;50450887 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5951735 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7280716 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(813207) | &nbsp;&nbsp;&nbsp;&nbsp;2600321 | &nbsp;&nbsp;&nbsp;&nbsp;50909020 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;17563722 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2062717 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4726378 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;364961 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;305040 | &nbsp;&nbsp;&nbsp;&nbsp;15570062 |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;73131017 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9125969 | &nbsp;&nbsp;&nbsp;&nbsp;14237337 | &nbsp;&nbsp;&nbsp;(2166610) | &nbsp;&nbsp;&nbsp;&nbsp;5067557 | &nbsp;&nbsp;&nbsp;&nbsp;70920596 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;22510615 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5202798 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8165231 | &nbsp;&nbsp;&nbsp;&nbsp;4492222 | &nbsp;&nbsp;&nbsp;(4341393) | &nbsp;&nbsp;&nbsp;&nbsp;19699011 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;31865749 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3214378 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5632046 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(500052) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;832839 | &nbsp;&nbsp;&nbsp;&nbsp;29780868 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;71022086 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9469342 | &nbsp;&nbsp;&nbsp;&nbsp;10286373 | &nbsp;&nbsp;&nbsp;(1896392) | &nbsp;&nbsp;&nbsp;&nbsp;4292920 | &nbsp;&nbsp;&nbsp;&nbsp;72601583 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;23943987 | &nbsp;&nbsp;&nbsp;&nbsp;26255410 | &nbsp;&nbsp;&nbsp;&nbsp;31317404 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(583) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;938 | &nbsp;&nbsp;&nbsp;&nbsp;18882348 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;9014324 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1005066 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3109349 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;986975 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(77799) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7819217 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;9056016 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1503113 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3004840 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;228289 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43327 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7825905 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;2325255 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;96931 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1803014 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;907649 | &nbsp;&nbsp;&nbsp;&nbsp;(853261) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;673560 |
| MFS Limited Maturity Fund | &nbsp;&nbsp;&nbsp;&nbsp;55473008 | &nbsp;&nbsp;&nbsp;&nbsp;15055739 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4415142 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(191062) | &nbsp;&nbsp;&nbsp;&nbsp;1851947 | &nbsp;&nbsp;&nbsp;&nbsp;67774490 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;18861931 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2459358 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5809676 | &nbsp;&nbsp;&nbsp;&nbsp;3050175 | &nbsp;&nbsp;&nbsp;(2754146) | &nbsp;&nbsp;&nbsp;&nbsp;15807642 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;19319731 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2705945 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5527442 | &nbsp;&nbsp;&nbsp;&nbsp;2924742 | &nbsp;&nbsp;&nbsp;(3804257) | &nbsp;&nbsp;&nbsp;&nbsp;15618719 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;4432864 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;569529 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1250322 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;183783 | &nbsp;&nbsp;&nbsp;&nbsp;(127307) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3808547 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;4520948 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;727088 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1342595 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;308034 | &nbsp;&nbsp;&nbsp;&nbsp;(486459) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3727016 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;22702201 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3480184 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6198849 | &nbsp;&nbsp;&nbsp;&nbsp;2467697 | &nbsp;&nbsp;&nbsp;(2675528) | &nbsp;&nbsp;&nbsp;&nbsp;19775705 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;18117528 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1590789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5430899 | &nbsp;&nbsp;&nbsp;&nbsp;1350617 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28788 | &nbsp;&nbsp;&nbsp;&nbsp;15656823 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;98243876 | &nbsp;&nbsp;&nbsp;&nbsp;15523227 | &nbsp;&nbsp;&nbsp;&nbsp;13324305 | &nbsp;&nbsp;&nbsp;(2427599) | &nbsp;&nbsp;&nbsp;&nbsp;6094255 | &nbsp;&nbsp;&nbsp;104109454 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;26045852 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3262171 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6419622 | &nbsp;&nbsp;&nbsp;&nbsp;1048329 | &nbsp;&nbsp;&nbsp;(1027016) | &nbsp;&nbsp;&nbsp;&nbsp;22909714 |
|  | $785664583 | $136987195 | $201917545 | $22297782 | $(1109867) | $741922148 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$503137 | &nbsp;&nbsp;&nbsp;$1516696 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;276238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;743936 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1131859 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;406056 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1146263 | &nbsp;&nbsp;&nbsp;&nbsp;2134343 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;130177 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;440432 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;858220 | &nbsp;&nbsp;&nbsp;&nbsp;1531548 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;558880 |  |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;1159654 |  |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;881105 |  |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;1707889 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;413425 |  |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;2914188 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34211 | &nbsp;&nbsp;&nbsp;&nbsp;2397152 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;1997598 |  |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;3076425 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;1050161 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;135321 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;354661 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185328 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;769015 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35266 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56470 |
| MFS Limited Maturity Fund | &nbsp;&nbsp;&nbsp;&nbsp;2775120 |  |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;1104711 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;305021 | &nbsp;&nbsp;&nbsp;&nbsp;1337256 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;116339 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;134366 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;183877 | &nbsp;&nbsp;&nbsp;&nbsp;1819191 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;354380 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;4568073 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;494658 | &nbsp;&nbsp;&nbsp;&nbsp;1607998 |
|  | $26992813 | $16353831 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$22959592 | &nbsp;&nbsp;&nbsp;&nbsp;$5086422 | &nbsp;&nbsp;&nbsp;&nbsp;$5235241 | $1039321 | &nbsp;&nbsp;&nbsp;$(707807) | &nbsp;&nbsp;&nbsp;$23142287 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;902358 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15652 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;678266 | &nbsp;&nbsp;&nbsp;&nbsp;124869 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(66021) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;298592 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;22818667 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5772969 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7607932 | &nbsp;&nbsp;&nbsp;2369296 | &nbsp;&nbsp;&nbsp;&nbsp;217136 | &nbsp;&nbsp;&nbsp;&nbsp;23570136 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;40302762 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3859374 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9353418 | &nbsp;&nbsp;&nbsp;&nbsp;865205 | &nbsp;&nbsp;&nbsp;4037062 | &nbsp;&nbsp;&nbsp;&nbsp;39710985 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;44748902 | &nbsp;&nbsp;&nbsp;&nbsp;11185043 | &nbsp;&nbsp;&nbsp;&nbsp;10230830 | &nbsp;&nbsp;&nbsp;2016050 | &nbsp;&nbsp;(3119392) | &nbsp;&nbsp;&nbsp;&nbsp;44599773 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;9708239 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2989816 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2037037 | &nbsp;&nbsp;&nbsp;&nbsp;219577 | &nbsp;&nbsp;(1264965) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9615630 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;25481600 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4664325 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4245689 | &nbsp;&nbsp;&nbsp;&nbsp;509908 | &nbsp;&nbsp;(1397406) | &nbsp;&nbsp;&nbsp;&nbsp;25012738 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;19706066 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2189601 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4206968 | &nbsp;&nbsp;&nbsp;&nbsp;(621548) | &nbsp;&nbsp;&nbsp;1048769 | &nbsp;&nbsp;&nbsp;&nbsp;18115920 |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;17886519 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2754687 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3449544 | &nbsp;&nbsp;&nbsp;&nbsp;(726243) | &nbsp;&nbsp;&nbsp;&nbsp;913027 | &nbsp;&nbsp;&nbsp;&nbsp;17378446 |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;11817758 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2161404 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2620161 | &nbsp;&nbsp;&nbsp;&nbsp;(382576) | &nbsp;&nbsp;&nbsp;&nbsp;825048 | &nbsp;&nbsp;&nbsp;&nbsp;11801473 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;899120 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14576 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;686481 | &nbsp;&nbsp;&nbsp;&nbsp;182755 | &nbsp;&nbsp;&nbsp;&nbsp;(111203) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;298767 |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;26200415 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5348641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4813976 | &nbsp;&nbsp;&nbsp;&nbsp;(677738) | &nbsp;&nbsp;&nbsp;1613468 | &nbsp;&nbsp;&nbsp;&nbsp;27670810 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;19228913 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3117241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3686787 | &nbsp;&nbsp;&nbsp;&nbsp;113637 | &nbsp;&nbsp;&nbsp;&nbsp;576480 | &nbsp;&nbsp;&nbsp;&nbsp;19349484 |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;39050895 | &nbsp;&nbsp;&nbsp;&nbsp;14671496 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6011720 | &nbsp;&nbsp;(1030405) | &nbsp;&nbsp;&nbsp;2729377 | &nbsp;&nbsp;&nbsp;&nbsp;49409643 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;22730586 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6983205 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6446655 | &nbsp;&nbsp;&nbsp;2250479 | &nbsp;&nbsp;(2138707) | &nbsp;&nbsp;&nbsp;&nbsp;23378908 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;24008280 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3381360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4342826 | &nbsp;&nbsp;&nbsp;&nbsp;(423182) | &nbsp;&nbsp;&nbsp;&nbsp;623616 | &nbsp;&nbsp;&nbsp;&nbsp;23247248 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;37513565 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7771239 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7367871 | &nbsp;&nbsp;(1271996) | &nbsp;&nbsp;&nbsp;2546757 | &nbsp;&nbsp;&nbsp;&nbsp;39191694 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;17826374 | &nbsp;&nbsp;&nbsp;&nbsp;18312609 | &nbsp;&nbsp;&nbsp;&nbsp;22789183 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(242) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;723 | &nbsp;&nbsp;&nbsp;&nbsp;13350281 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;10614726 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1200246 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2776701 | &nbsp;&nbsp;&nbsp;&nbsp;236694 | &nbsp;&nbsp;&nbsp;&nbsp;837680 | &nbsp;&nbsp;&nbsp;&nbsp;10112645 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;10632170 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1806295 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2583397 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;68026 | &nbsp;&nbsp;&nbsp;&nbsp;213238 | &nbsp;&nbsp;&nbsp;&nbsp;10136332 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;7674212 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;856733 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1781357 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44015 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78083 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6871686 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;22108726 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5024649 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4721640 | &nbsp;&nbsp;&nbsp;&nbsp;706217 | &nbsp;&nbsp;&nbsp;&nbsp;(342132) | &nbsp;&nbsp;&nbsp;&nbsp;22775820 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;22576402 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4886687 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4213517 | &nbsp;&nbsp;&nbsp;&nbsp;606686 | &nbsp;&nbsp;(1880454) | &nbsp;&nbsp;&nbsp;&nbsp;21975804 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;4816944 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1046644 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1031758 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;86136 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;716 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4918682 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;4887142 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1173044 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1092292 | &nbsp;&nbsp;&nbsp;&nbsp;107445 | &nbsp;&nbsp;&nbsp;&nbsp;(318626) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4756713 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;22899142 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4996523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4605127 | &nbsp;&nbsp;&nbsp;&nbsp;609851 | &nbsp;&nbsp;&nbsp;&nbsp;(857658) | &nbsp;&nbsp;&nbsp;&nbsp;23042731 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;18662791 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2110609 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2970180 | &nbsp;&nbsp;&nbsp;&nbsp;108059 | &nbsp;&nbsp;&nbsp;1360615 | &nbsp;&nbsp;&nbsp;&nbsp;19271894 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;38850887 | &nbsp;&nbsp;&nbsp;&nbsp;11834917 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6511906 | &nbsp;&nbsp;(1060509) | &nbsp;&nbsp;&nbsp;2521408 | &nbsp;&nbsp;&nbsp;&nbsp;45634797 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;25521700 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3746699 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4272556 | &nbsp;&nbsp;&nbsp;&nbsp;250516 | &nbsp;&nbsp;&nbsp;&nbsp;(322101) | &nbsp;&nbsp;&nbsp;&nbsp;24924258 |
|  | $593035453 | $138962706 | $142371016 | $6320303 | $7616731 | $603564177 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2035 Fund - continued** | **MFS Lifetime 2035 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$544818 | &nbsp;&nbsp;&nbsp;$1642345 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13103 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;299770 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;807313 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1345329 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;482637 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1486613 | &nbsp;&nbsp;&nbsp;&nbsp;2768076 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;151124 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;511304 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;901349 | &nbsp;&nbsp;&nbsp;&nbsp;1608514 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;655503 |  |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;1242658 |  |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;691474 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13454 |  |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;934932 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;482660 |  |
| MFS Government Securities Fund | &nbsp;&nbsp;&nbsp;&nbsp;1840304 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;36005 | &nbsp;&nbsp;&nbsp;&nbsp;2625502 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;1567062 |  |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;1685884 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;792206 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;167335 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;438562 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;229024 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;950331 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;194270 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;311077 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;1433180 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;395940 | &nbsp;&nbsp;&nbsp;&nbsp;1735854 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;135100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;156279 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;198947 | &nbsp;&nbsp;&nbsp;&nbsp;1968290 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;402037 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;1963091 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;512109 | &nbsp;&nbsp;&nbsp;&nbsp;1688281 |
|  | $18882101 | $19127545 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$35191012 | &nbsp;&nbsp;&nbsp;&nbsp;$7507853 | &nbsp;&nbsp;&nbsp;&nbsp;$7023842 | $1111046 | &nbsp;&nbsp;&nbsp;$(864546) | &nbsp;&nbsp;&nbsp;$35921523 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;4565214 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;506116 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1348891 | &nbsp;&nbsp;&nbsp;&nbsp;135717 | &nbsp;&nbsp;&nbsp;&nbsp;234048 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4092204 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;35645023 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8470333 | &nbsp;&nbsp;&nbsp;&nbsp;11296333 | &nbsp;&nbsp;&nbsp;2893823 | &nbsp;&nbsp;&nbsp;&nbsp;885366 | &nbsp;&nbsp;&nbsp;&nbsp;36598212 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;68961378 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7349484 | &nbsp;&nbsp;&nbsp;&nbsp;16668211 | &nbsp;&nbsp;&nbsp;1255827 | &nbsp;&nbsp;&nbsp;7024316 | &nbsp;&nbsp;&nbsp;&nbsp;67922794 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;69979392 | &nbsp;&nbsp;&nbsp;&nbsp;16546206 | &nbsp;&nbsp;&nbsp;&nbsp;14191641 | &nbsp;&nbsp;&nbsp;2357177 | &nbsp;&nbsp;(4585206) | &nbsp;&nbsp;&nbsp;&nbsp;70105928 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;15715434 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4973546 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3151803 | &nbsp;&nbsp;&nbsp;&nbsp;235937 | &nbsp;&nbsp;(2071027) | &nbsp;&nbsp;&nbsp;&nbsp;15702087 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;39002064 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6979953 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5925171 | &nbsp;&nbsp;&nbsp;&nbsp;544111 | &nbsp;&nbsp;(2113998) | &nbsp;&nbsp;&nbsp;&nbsp;38486959 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;32497689 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4355562 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7767253 | &nbsp;&nbsp;(1333285) | &nbsp;&nbsp;&nbsp;1994228 | &nbsp;&nbsp;&nbsp;&nbsp;29746941 |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;19779366 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5204118 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4411611 | &nbsp;&nbsp;&nbsp;&nbsp;(981696) | &nbsp;&nbsp;&nbsp;1157555 | &nbsp;&nbsp;&nbsp;&nbsp;20747732 |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;13032201 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3847063 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3272291 | &nbsp;&nbsp;&nbsp;&nbsp;(502021) | &nbsp;&nbsp;&nbsp;1015883 | &nbsp;&nbsp;&nbsp;&nbsp;14120835 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;4529245 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;463724 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1393277 | &nbsp;&nbsp;&nbsp;&nbsp;136088 | &nbsp;&nbsp;&nbsp;&nbsp;358314 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4094094 |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;19718985 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5109105 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4926999 | &nbsp;&nbsp;&nbsp;&nbsp;(685128) | &nbsp;&nbsp;&nbsp;1384670 | &nbsp;&nbsp;&nbsp;&nbsp;20600633 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;31127660 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5420417 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6050470 | &nbsp;&nbsp;&nbsp;&nbsp;115220 | &nbsp;&nbsp;&nbsp;&nbsp;870534 | &nbsp;&nbsp;&nbsp;&nbsp;31483361 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;35506550 | &nbsp;&nbsp;&nbsp;&nbsp;10291002 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9371481 | &nbsp;&nbsp;&nbsp;1912497 | &nbsp;&nbsp;(1967633) | &nbsp;&nbsp;&nbsp;&nbsp;36370935 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;26541132 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6701361 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5644483 | &nbsp;&nbsp;&nbsp;&nbsp;(596449) | &nbsp;&nbsp;&nbsp;&nbsp;769882 | &nbsp;&nbsp;&nbsp;&nbsp;27771443 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;34954296 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8485291 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9417314 | &nbsp;&nbsp;(1529179) | &nbsp;&nbsp;&nbsp;2692839 | &nbsp;&nbsp;&nbsp;&nbsp;35185933 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;18000995 | &nbsp;&nbsp;&nbsp;&nbsp;22405706 | &nbsp;&nbsp;&nbsp;&nbsp;26155053 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(300) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;664 | &nbsp;&nbsp;&nbsp;&nbsp;14252012 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;20256523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2642456 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4909085 | &nbsp;&nbsp;&nbsp;&nbsp;235897 | &nbsp;&nbsp;&nbsp;1782843 | &nbsp;&nbsp;&nbsp;&nbsp;20008634 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;20437608 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3776997 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4638762 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21091 | &nbsp;&nbsp;&nbsp;&nbsp;448258 | &nbsp;&nbsp;&nbsp;&nbsp;20045192 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;17662935 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2825102 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4412090 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1899 | &nbsp;&nbsp;&nbsp;&nbsp;238596 | &nbsp;&nbsp;&nbsp;&nbsp;16316442 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;34434479 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7359879 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6577164 | &nbsp;&nbsp;&nbsp;&nbsp;656182 | &nbsp;&nbsp;&nbsp;&nbsp;(277851) | &nbsp;&nbsp;&nbsp;&nbsp;35595525 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;35187407 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7752816 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6016091 | &nbsp;&nbsp;&nbsp;&nbsp;716387 | &nbsp;&nbsp;(2960767) | &nbsp;&nbsp;&nbsp;&nbsp;34679752 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;7820859 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1636061 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1577536 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71753 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29070 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7980207 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;7956790 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1881262 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1647930 | &nbsp;&nbsp;&nbsp;&nbsp;133235 | &nbsp;&nbsp;&nbsp;&nbsp;(534618) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7788739 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;35039295 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7560707 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6163851 | &nbsp;&nbsp;&nbsp;&nbsp;600388 | &nbsp;&nbsp;(1230509) | &nbsp;&nbsp;&nbsp;&nbsp;35806030 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;27427943 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3159668 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5003033 | &nbsp;&nbsp;&nbsp;&nbsp;117684 | &nbsp;&nbsp;&nbsp;1939732 | &nbsp;&nbsp;&nbsp;&nbsp;27641994 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;17184508 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5113141 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5074645 | &nbsp;&nbsp;&nbsp;&nbsp;(557500) | &nbsp;&nbsp;&nbsp;1176801 | &nbsp;&nbsp;&nbsp;&nbsp;17842305 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;39063682 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5952204 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6372916 | &nbsp;&nbsp;&nbsp;&nbsp;244904 | &nbsp;&nbsp;&nbsp;&nbsp;(507661) | &nbsp;&nbsp;&nbsp;&nbsp;38380213 |
|  | $767219665 | $174277133 | $190409227 | $7311305 | $6889783 | $765288659 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$859721 | &nbsp;&nbsp;&nbsp;$2591613 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;109002 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;476791 | &nbsp;&nbsp;&nbsp;&nbsp;1284043 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;2350482 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;843238 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;2384731 | &nbsp;&nbsp;&nbsp;&nbsp;4440374 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;252923 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;855727 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1410170 | &nbsp;&nbsp;&nbsp;&nbsp;2516534 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;1091711 |  |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;1442117 |  |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;803260 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;111849 |  |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;706844 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;805145 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55833 | &nbsp;&nbsp;&nbsp;&nbsp;4170565 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;1821358 |  |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;1561455 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;827719 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;334364 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;876325 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;457320 | &nbsp;&nbsp;&nbsp;&nbsp;1897635 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;465483 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;745357 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;2302907 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;634739 | &nbsp;&nbsp;&nbsp;&nbsp;2782783 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;224860 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;260669 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;313725 | &nbsp;&nbsp;&nbsp;&nbsp;3103859 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;595976 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;820550 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;794897 | &nbsp;&nbsp;&nbsp;&nbsp;2638628 |
|  | $21713025 | $31310257 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$23282351 | &nbsp;&nbsp;&nbsp;&nbsp;$4894541 | &nbsp;&nbsp;&nbsp;&nbsp;$4249790 | &nbsp;&nbsp;&nbsp;$597695 | &nbsp;&nbsp;&nbsp;$(480646) | &nbsp;&nbsp;&nbsp;$24044151 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;4288960 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;533026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1097815 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82919 | &nbsp;&nbsp;&nbsp;&nbsp;259882 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4066972 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;24851959 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5636202 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7138444 | &nbsp;&nbsp;&nbsp;1772470 | &nbsp;&nbsp;&nbsp;&nbsp;836215 | &nbsp;&nbsp;&nbsp;&nbsp;25958402 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;51915878 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5716393 | &nbsp;&nbsp;&nbsp;&nbsp;11376902 | &nbsp;&nbsp;&nbsp;&nbsp;634070 | &nbsp;&nbsp;&nbsp;5564924 | &nbsp;&nbsp;&nbsp;&nbsp;52454363 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;48823259 | &nbsp;&nbsp;&nbsp;&nbsp;12638620 | &nbsp;&nbsp;&nbsp;&nbsp;10348374 | &nbsp;&nbsp;&nbsp;1310075 | &nbsp;&nbsp;(2957206) | &nbsp;&nbsp;&nbsp;&nbsp;49466374 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;11689107 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3861757 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2333848 | &nbsp;&nbsp;&nbsp;&nbsp;119595 | &nbsp;&nbsp;(1526843) | &nbsp;&nbsp;&nbsp;&nbsp;11809768 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;27079160 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5505150 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4543393 | &nbsp;&nbsp;&nbsp;&nbsp;252036 | &nbsp;&nbsp;(1364977) | &nbsp;&nbsp;&nbsp;&nbsp;26927976 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;24076044 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3802962 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6062594 | &nbsp;&nbsp;&nbsp;&nbsp;(980203) | &nbsp;&nbsp;&nbsp;1473260 | &nbsp;&nbsp;&nbsp;&nbsp;22309469 |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;5427498 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2342319 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1165676 | &nbsp;&nbsp;&nbsp;&nbsp;(210143) | &nbsp;&nbsp;&nbsp;&nbsp;250356 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6644354 |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;3577977 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1627178 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;859634 | &nbsp;&nbsp;&nbsp;&nbsp;(102071) | &nbsp;&nbsp;&nbsp;&nbsp;256361 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4499811 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;4269613 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;493140 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1159853 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77470 | &nbsp;&nbsp;&nbsp;&nbsp;389068 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4069438 |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;5408515 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2328365 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1341187 | &nbsp;&nbsp;&nbsp;&nbsp;(130582) | &nbsp;&nbsp;&nbsp;&nbsp;333844 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6598955 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;23159885 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4760044 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4924789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74350 | &nbsp;&nbsp;&nbsp;&nbsp;651444 | &nbsp;&nbsp;&nbsp;&nbsp;23720934 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;24739865 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7203841 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6083380 | &nbsp;&nbsp;&nbsp;1111369 | &nbsp;&nbsp;(1234159) | &nbsp;&nbsp;&nbsp;&nbsp;25737536 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;7283176 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2996346 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1443271 | &nbsp;&nbsp;&nbsp;&nbsp;(155945) | &nbsp;&nbsp;&nbsp;&nbsp;193486 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8873792 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;16794558 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5068580 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4780050 | &nbsp;&nbsp;&nbsp;&nbsp;(694989) | &nbsp;&nbsp;&nbsp;1264279 | &nbsp;&nbsp;&nbsp;&nbsp;17652378 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;12013472 | &nbsp;&nbsp;&nbsp;&nbsp;11781591 | &nbsp;&nbsp;&nbsp;&nbsp;14193673 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(219) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;421 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9601592 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;15940398 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2128327 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3510218 | &nbsp;&nbsp;&nbsp;&nbsp;113461 | &nbsp;&nbsp;&nbsp;1455691 | &nbsp;&nbsp;&nbsp;&nbsp;16127659 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;16008573 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3164847 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3321429 | &nbsp;&nbsp;&nbsp;&nbsp;(267382) | &nbsp;&nbsp;&nbsp;&nbsp;588208 | &nbsp;&nbsp;&nbsp;&nbsp;16172817 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;16783978 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3077210 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3840660 | &nbsp;&nbsp;&nbsp;&nbsp;(170985) | &nbsp;&nbsp;&nbsp;&nbsp;352471 | &nbsp;&nbsp;&nbsp;&nbsp;16202014 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;24061425 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5581765 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4584375 | &nbsp;&nbsp;&nbsp;&nbsp;300053 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(92882) | &nbsp;&nbsp;&nbsp;&nbsp;25265986 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;24540796 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5969421 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4518145 | &nbsp;&nbsp;&nbsp;&nbsp;358717 | &nbsp;&nbsp;(1963757) | &nbsp;&nbsp;&nbsp;&nbsp;24387032 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;5815230 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1304387 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1146467 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;65754 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(253) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6038651 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;5908832 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1546576 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1302654 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83036 | &nbsp;&nbsp;&nbsp;&nbsp;(390069) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5845721 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;23201527 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5140349 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3938625 | &nbsp;&nbsp;&nbsp;&nbsp;302623 | &nbsp;&nbsp;&nbsp;&nbsp;(767088) | &nbsp;&nbsp;&nbsp;&nbsp;23938786 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;19428709 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2355050 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3290431 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11465 | &nbsp;&nbsp;&nbsp;1414784 | &nbsp;&nbsp;&nbsp;&nbsp;19919577 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;10093749 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3564565 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3215490 | &nbsp;&nbsp;&nbsp;&nbsp;(334155) | &nbsp;&nbsp;&nbsp;&nbsp;701930 | &nbsp;&nbsp;&nbsp;&nbsp;10810599 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;27095918 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4919224 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4979404 | &nbsp;&nbsp;&nbsp;&nbsp;129217 | &nbsp;&nbsp;&nbsp;&nbsp;(318063) | &nbsp;&nbsp;&nbsp;&nbsp;26846892 |
|  | $507560412 | $119941776 | $120750571 | $4349701 | $4890681 | $515991999 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2045 Fund - continued** | **MFS Lifetime 2045 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$579786 | &nbsp;&nbsp;&nbsp;$1747756 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108005 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;339749 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;914978 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1816643 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;651723 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1703205 | &nbsp;&nbsp;&nbsp;&nbsp;3171370 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;192144 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;650087 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;997102 | &nbsp;&nbsp;&nbsp;&nbsp;1779388 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;829213 |  |
| MFS Emerging Markets Debt Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;431933 |  |
| MFS Emerging Markets Debt Local Currency Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;241061 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;110795 |  |
| MFS Global Opportunistic Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;212345 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;609770 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39969 | &nbsp;&nbsp;&nbsp;&nbsp;2970162 |
| MFS High Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;546464 |  |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;770917 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;557170 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;269678 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;706793 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;369115 | &nbsp;&nbsp;&nbsp;&nbsp;1531632 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;459308 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;735471 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;1647057 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;453183 | &nbsp;&nbsp;&nbsp;&nbsp;1986817 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;171211 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;198354 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;211677 | &nbsp;&nbsp;&nbsp;&nbsp;2094244 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;430413 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;492952 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;560455 | &nbsp;&nbsp;&nbsp;&nbsp;1866309 |
|  | $13504263 | $22652141 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$25125171 | &nbsp;&nbsp;&nbsp;&nbsp;$4958231 | &nbsp;&nbsp;&nbsp;&nbsp;$4322460 | &nbsp;&nbsp;&nbsp;$627034 | &nbsp;&nbsp;&nbsp;$(529248) | &nbsp;&nbsp;&nbsp;$25858728 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;5643363 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;724792 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1185548 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;68935 | &nbsp;&nbsp;&nbsp;&nbsp;377425 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5628967 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;27769882 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6132220 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7807557 | &nbsp;&nbsp;&nbsp;1724392 | &nbsp;&nbsp;&nbsp;1128221 | &nbsp;&nbsp;&nbsp;&nbsp;28947158 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;60924123 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7046692 | &nbsp;&nbsp;&nbsp;&nbsp;12967663 | &nbsp;&nbsp;&nbsp;&nbsp;572411 | &nbsp;&nbsp;&nbsp;6715544 | &nbsp;&nbsp;&nbsp;&nbsp;62291107 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;54478557 | &nbsp;&nbsp;&nbsp;&nbsp;13522587 | &nbsp;&nbsp;&nbsp;&nbsp;10207688 | &nbsp;&nbsp;&nbsp;1458969 | &nbsp;&nbsp;(3407441) | &nbsp;&nbsp;&nbsp;&nbsp;55844984 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;13606730 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4719884 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2677270 | &nbsp;&nbsp;&nbsp;&nbsp;128535 | &nbsp;&nbsp;(1802060) | &nbsp;&nbsp;&nbsp;&nbsp;13975819 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;30148806 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5885613 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4361045 | &nbsp;&nbsp;&nbsp;&nbsp;233494 | &nbsp;&nbsp;(1526546) | &nbsp;&nbsp;&nbsp;&nbsp;30380322 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;28012415 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4247113 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6218323 | &nbsp;&nbsp;(1234508) | &nbsp;&nbsp;&nbsp;1785402 | &nbsp;&nbsp;&nbsp;&nbsp;26592099 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;5608895 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;649896 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1241039 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59918 | &nbsp;&nbsp;&nbsp;&nbsp;555079 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5632749 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;27137965 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5662036 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5575598 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52663 | &nbsp;&nbsp;&nbsp;&nbsp;732488 | &nbsp;&nbsp;&nbsp;&nbsp;28009554 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;27669553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7743054 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6395574 | &nbsp;&nbsp;&nbsp;1022882 | &nbsp;&nbsp;(1220171) | &nbsp;&nbsp;&nbsp;&nbsp;28819744 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;13270373 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3619720 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4141051 | &nbsp;&nbsp;&nbsp;&nbsp;(514063) | &nbsp;&nbsp;&nbsp;&nbsp;952896 | &nbsp;&nbsp;&nbsp;&nbsp;13187875 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;12963873 | &nbsp;&nbsp;&nbsp;&nbsp;12359598 | &nbsp;&nbsp;&nbsp;&nbsp;14845760 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(348) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;458 | &nbsp;&nbsp;&nbsp;&nbsp;10477821 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;19155240 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2554915 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3816632 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72868 | &nbsp;&nbsp;&nbsp;1797365 | &nbsp;&nbsp;&nbsp;&nbsp;19763756 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;19149819 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4073094 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3825023 | &nbsp;&nbsp;&nbsp;&nbsp;(264693) | &nbsp;&nbsp;&nbsp;&nbsp;653105 | &nbsp;&nbsp;&nbsp;&nbsp;19786302 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;22010684 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4763552 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4561860 | &nbsp;&nbsp;&nbsp;&nbsp;(223982) | &nbsp;&nbsp;&nbsp;&nbsp;469918 | &nbsp;&nbsp;&nbsp;&nbsp;22458312 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;27010865 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5626324 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4591294 | &nbsp;&nbsp;&nbsp;&nbsp;322823 | &nbsp;&nbsp;&nbsp;&nbsp;(121472) | &nbsp;&nbsp;&nbsp;&nbsp;28247246 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;27481889 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6425852 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4428283 | &nbsp;&nbsp;&nbsp;&nbsp;380984 | &nbsp;&nbsp;(2241769) | &nbsp;&nbsp;&nbsp;&nbsp;27618673 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;6776407 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1477447 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1239604 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43003 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16528 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7073781 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;6861085 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1845137 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1386042 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;92603 | &nbsp;&nbsp;&nbsp;&nbsp;(471655) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6941128 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;25064751 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5085982 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3814673 | &nbsp;&nbsp;&nbsp;&nbsp;312369 | &nbsp;&nbsp;&nbsp;&nbsp;(842176) | &nbsp;&nbsp;&nbsp;&nbsp;25806253 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;21945767 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2933206 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3926559 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4942 | &nbsp;&nbsp;&nbsp;1602085 | &nbsp;&nbsp;&nbsp;&nbsp;22559441 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;9943063 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3561248 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3320038 | &nbsp;&nbsp;&nbsp;&nbsp;(275838) | &nbsp;&nbsp;&nbsp;&nbsp;636980 | &nbsp;&nbsp;&nbsp;&nbsp;10545415 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;30220506 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5634283 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5279577 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78070 | &nbsp;&nbsp;&nbsp;&nbsp;(338027) | &nbsp;&nbsp;&nbsp;&nbsp;30315255 |
|  | $547979782 | $121252476 | $122136161 | $4743463 | $4922929 | $556762489 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2050 Fund - continued** | **MFS Lifetime 2050 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$618439 | &nbsp;&nbsp;&nbsp;$1864272 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;145653 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;377603 | &nbsp;&nbsp;&nbsp;&nbsp;1016921 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;2143187 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;768871 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1886929 | &nbsp;&nbsp;&nbsp;&nbsp;3513465 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;222222 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;751854 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1105809 | &nbsp;&nbsp;&nbsp;&nbsp;1973383 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;962731 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;149521 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;709271 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44135 | &nbsp;&nbsp;&nbsp;&nbsp;3308154 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;587946 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;596415 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;326931 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;856846 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;447221 | &nbsp;&nbsp;&nbsp;&nbsp;1855729 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;617819 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;989286 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;1819769 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;502557 | &nbsp;&nbsp;&nbsp;&nbsp;2203279 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;197367 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;229152 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;225825 | &nbsp;&nbsp;&nbsp;&nbsp;2234210 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;484754 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;478356 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;623870 | &nbsp;&nbsp;&nbsp;&nbsp;2069817 |
|  | $13454561 | $25455008 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$16403509 | &nbsp;&nbsp;&nbsp;$3856894 | &nbsp;&nbsp;&nbsp;$2610749 | &nbsp;&nbsp;&nbsp;$303001 | &nbsp;&nbsp;&nbsp;$(289908) | &nbsp;&nbsp;&nbsp;$17662747 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;3695617 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;507518 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;642110 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29739 | &nbsp;&nbsp;&nbsp;&nbsp;267121 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3857885 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;18121851 | &nbsp;&nbsp;&nbsp;&nbsp;4644142 | &nbsp;&nbsp;&nbsp;&nbsp;4647393 | &nbsp;&nbsp;&nbsp;&nbsp;993829 | &nbsp;&nbsp;&nbsp;&nbsp;805784 | &nbsp;&nbsp;&nbsp;&nbsp;19918213 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;39755187 | &nbsp;&nbsp;&nbsp;&nbsp;4679054 | &nbsp;&nbsp;&nbsp;&nbsp;6381050 | &nbsp;&nbsp;&nbsp;&nbsp;154768 | &nbsp;&nbsp;&nbsp;4710039 | &nbsp;&nbsp;&nbsp;&nbsp;42917998 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;35612338 | &nbsp;&nbsp;&nbsp;10198536 | &nbsp;&nbsp;&nbsp;&nbsp;6307910 | &nbsp;&nbsp;&nbsp;&nbsp;745316 | &nbsp;&nbsp;(2134139) | &nbsp;&nbsp;&nbsp;&nbsp;38114141 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;8885478 | &nbsp;&nbsp;&nbsp;&nbsp;3420688 | &nbsp;&nbsp;&nbsp;&nbsp;1606956 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83401 | &nbsp;&nbsp;(1237199) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9545412 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;19680363 | &nbsp;&nbsp;&nbsp;&nbsp;4670864 | &nbsp;&nbsp;&nbsp;&nbsp;2689353 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97955 | &nbsp;&nbsp;&nbsp;&nbsp;(976530) | &nbsp;&nbsp;&nbsp;&nbsp;20783299 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;18434623 | &nbsp;&nbsp;&nbsp;&nbsp;3355506 | &nbsp;&nbsp;&nbsp;&nbsp;3899143 | &nbsp;&nbsp;&nbsp;&nbsp;(937957) | &nbsp;&nbsp;&nbsp;1324933 | &nbsp;&nbsp;&nbsp;&nbsp;18277962 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;3668360 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;464025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;679863 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14356 | &nbsp;&nbsp;&nbsp;&nbsp;393411 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3860289 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;17710940 | &nbsp;&nbsp;&nbsp;&nbsp;3908774 | &nbsp;&nbsp;&nbsp;&nbsp;2963945 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8190 | &nbsp;&nbsp;&nbsp;&nbsp;495577 | &nbsp;&nbsp;&nbsp;&nbsp;19159536 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;18047983 | &nbsp;&nbsp;&nbsp;&nbsp;5851254 | &nbsp;&nbsp;&nbsp;&nbsp;3924610 | &nbsp;&nbsp;&nbsp;&nbsp;546261 | &nbsp;&nbsp;&nbsp;&nbsp;(752560) | &nbsp;&nbsp;&nbsp;&nbsp;19768328 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;8669006 | &nbsp;&nbsp;&nbsp;&nbsp;2544163 | &nbsp;&nbsp;&nbsp;&nbsp;2343542 | &nbsp;&nbsp;&nbsp;&nbsp;(352472) | &nbsp;&nbsp;&nbsp;&nbsp;644174 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9161329 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;8454120 | &nbsp;&nbsp;&nbsp;&nbsp;8295756 | &nbsp;&nbsp;&nbsp;&nbsp;9519570 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(140) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;256 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7230422 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;12498235 | &nbsp;&nbsp;&nbsp;&nbsp;1724917 | &nbsp;&nbsp;&nbsp;&nbsp;1875555 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10805 | &nbsp;&nbsp;&nbsp;1233871 | &nbsp;&nbsp;&nbsp;&nbsp;13592273 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;12497235 | &nbsp;&nbsp;&nbsp;&nbsp;2714893 | &nbsp;&nbsp;&nbsp;&nbsp;1851518 | &nbsp;&nbsp;&nbsp;&nbsp;(336088) | &nbsp;&nbsp;&nbsp;&nbsp;605751 | &nbsp;&nbsp;&nbsp;&nbsp;13630273 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;14373324 | &nbsp;&nbsp;&nbsp;&nbsp;3095290 | &nbsp;&nbsp;&nbsp;&nbsp;2273648 | &nbsp;&nbsp;&nbsp;&nbsp;(239655) | &nbsp;&nbsp;&nbsp;&nbsp;416768 | &nbsp;&nbsp;&nbsp;&nbsp;15372079 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;17619873 | &nbsp;&nbsp;&nbsp;&nbsp;4538968 | &nbsp;&nbsp;&nbsp;&nbsp;2846988 | &nbsp;&nbsp;&nbsp;&nbsp;159581 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(60255) | &nbsp;&nbsp;&nbsp;&nbsp;19411179 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;17935894 | &nbsp;&nbsp;&nbsp;&nbsp;4879665 | &nbsp;&nbsp;&nbsp;&nbsp;2683233 | &nbsp;&nbsp;&nbsp;&nbsp;201904 | &nbsp;&nbsp;(1469615) | &nbsp;&nbsp;&nbsp;&nbsp;18864615 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;4421833 | &nbsp;&nbsp;&nbsp;&nbsp;1162953 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;740188 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3704 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18574 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4866876 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;4481142 | &nbsp;&nbsp;&nbsp;&nbsp;1389699 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;872167 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52708 | &nbsp;&nbsp;&nbsp;&nbsp;(320394) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4730988 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;16359269 | &nbsp;&nbsp;&nbsp;&nbsp;4013249 | &nbsp;&nbsp;&nbsp;&nbsp;2342019 | &nbsp;&nbsp;&nbsp;&nbsp;148465 | &nbsp;&nbsp;&nbsp;&nbsp;(551230) | &nbsp;&nbsp;&nbsp;&nbsp;17627734 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;14322871 | &nbsp;&nbsp;&nbsp;&nbsp;1983593 | &nbsp;&nbsp;&nbsp;&nbsp;1885914 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(28809) | &nbsp;&nbsp;&nbsp;1102284 | &nbsp;&nbsp;&nbsp;&nbsp;15494025 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;6491058 | &nbsp;&nbsp;&nbsp;&nbsp;2473280 | &nbsp;&nbsp;&nbsp;&nbsp;1870821 | &nbsp;&nbsp;&nbsp;&nbsp;(196448) | &nbsp;&nbsp;&nbsp;&nbsp;431826 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7328895 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;19722017 | &nbsp;&nbsp;&nbsp;&nbsp;4228644 | &nbsp;&nbsp;&nbsp;&nbsp;3011594 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29631 | &nbsp;&nbsp;&nbsp;&nbsp;(214544) | &nbsp;&nbsp;&nbsp;&nbsp;20754154 |
|  | $357862126 | $88602325 | $70469839 | $1492045 | $4443995 | $381930652 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2055 Fund - continued** | **MFS Lifetime 2055 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;$409547 | &nbsp;&nbsp;&nbsp;$1234571 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;96677 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;249956 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;673155 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;1420906 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;509752 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;1251493 | &nbsp;&nbsp;&nbsp;&nbsp;2330282 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;147094 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;497668 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;734752 | &nbsp;&nbsp;&nbsp;&nbsp;1311207 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;636763 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;99234 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;470478 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29276 | &nbsp;&nbsp;&nbsp;&nbsp;2190763 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;388714 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;396669 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;216640 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;567785 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;296162 | &nbsp;&nbsp;&nbsp;&nbsp;1228914 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;409594 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;655865 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;1202371 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;332951 | &nbsp;&nbsp;&nbsp;&nbsp;1459701 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;130968 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;151863 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;149481 | &nbsp;&nbsp;&nbsp;&nbsp;1478905 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;321128 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;318803 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;414876 | &nbsp;&nbsp;&nbsp;&nbsp;1376621 |
|  | $8922162 | $16869423 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$8878527 | &nbsp;&nbsp;&nbsp;$2602250 | &nbsp;&nbsp;&nbsp;$1392699 | $102059 | &nbsp;&nbsp;&nbsp;$(168940) | &nbsp;&nbsp;&nbsp;$10021197 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1962390 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;522305 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;468172 | &nbsp;&nbsp;&nbsp;&nbsp;13259 | &nbsp;&nbsp;&nbsp;&nbsp;152230 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2182012 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;9823647 | &nbsp;&nbsp;&nbsp;&nbsp;2999708 | &nbsp;&nbsp;&nbsp;&nbsp;2518191 | &nbsp;&nbsp;&nbsp;339394 | &nbsp;&nbsp;&nbsp;&nbsp;534426 | &nbsp;&nbsp;&nbsp;&nbsp;11178984 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;21368026 | &nbsp;&nbsp;&nbsp;&nbsp;4362625 | &nbsp;&nbsp;&nbsp;&nbsp;4136780 | &nbsp;&nbsp;&nbsp;&nbsp;94071 | &nbsp;&nbsp;&nbsp;2675718 | &nbsp;&nbsp;&nbsp;&nbsp;24363660 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;19209312 | &nbsp;&nbsp;&nbsp;&nbsp;6934916 | &nbsp;&nbsp;&nbsp;&nbsp;3553073 | &nbsp;&nbsp;&nbsp;262492 | &nbsp;&nbsp;(1213862) | &nbsp;&nbsp;&nbsp;&nbsp;21639785 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;4800523 | &nbsp;&nbsp;&nbsp;&nbsp;2259167 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;981444 | &nbsp;&nbsp;&nbsp;&nbsp;38533 | &nbsp;&nbsp;&nbsp;&nbsp;(743667) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5373112 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;10600697 | &nbsp;&nbsp;&nbsp;&nbsp;3455695 | &nbsp;&nbsp;&nbsp;&nbsp;1651533 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7939 | &nbsp;&nbsp;&nbsp;&nbsp;(538646) | &nbsp;&nbsp;&nbsp;&nbsp;11874152 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;9637887 | &nbsp;&nbsp;&nbsp;&nbsp;2881467 | &nbsp;&nbsp;&nbsp;&nbsp;2186317 | &nbsp;&nbsp;(433483) | &nbsp;&nbsp;&nbsp;&nbsp;658979 | &nbsp;&nbsp;&nbsp;&nbsp;10558533 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1963085 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;513134 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;521974 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9424 | &nbsp;&nbsp;&nbsp;&nbsp;221703 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2185372 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;9625899 | &nbsp;&nbsp;&nbsp;&nbsp;3251560 | &nbsp;&nbsp;&nbsp;&nbsp;2214536 | &nbsp;&nbsp;&nbsp;(77059) | &nbsp;&nbsp;&nbsp;&nbsp;343685 | &nbsp;&nbsp;&nbsp;&nbsp;10929549 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;9810297 | &nbsp;&nbsp;&nbsp;&nbsp;3718642 | &nbsp;&nbsp;&nbsp;&nbsp;2133932 | &nbsp;&nbsp;&nbsp;152930 | &nbsp;&nbsp;&nbsp;&nbsp;(371742) | &nbsp;&nbsp;&nbsp;&nbsp;11176195 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;4645899 | &nbsp;&nbsp;&nbsp;&nbsp;1656379 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;994971 | &nbsp;&nbsp;(174306) | &nbsp;&nbsp;&nbsp;&nbsp;341425 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5474426 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;4467901 | &nbsp;&nbsp;&nbsp;&nbsp;5622190 | &nbsp;&nbsp;&nbsp;&nbsp;5685149 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4404968 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;6746491 | &nbsp;&nbsp;&nbsp;&nbsp;1677504 | &nbsp;&nbsp;&nbsp;&nbsp;1397794 | &nbsp;&nbsp;&nbsp;&nbsp;10443 | &nbsp;&nbsp;&nbsp;&nbsp;688726 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7725370 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;6733969 | &nbsp;&nbsp;&nbsp;&nbsp;2036575 | &nbsp;&nbsp;&nbsp;&nbsp;1201822 | &nbsp;&nbsp;(218513) | &nbsp;&nbsp;&nbsp;&nbsp;394186 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7744395 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;7757775 | &nbsp;&nbsp;&nbsp;&nbsp;2478053 | &nbsp;&nbsp;&nbsp;&nbsp;1474656 | &nbsp;&nbsp;(142734) | &nbsp;&nbsp;&nbsp;&nbsp;288781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8907219 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;9576214 | &nbsp;&nbsp;&nbsp;&nbsp;3085598 | &nbsp;&nbsp;&nbsp;&nbsp;1678317 | &nbsp;&nbsp;&nbsp;&nbsp;37542 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(49050) | &nbsp;&nbsp;&nbsp;&nbsp;10971987 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;9665948 | &nbsp;&nbsp;&nbsp;&nbsp;3490609 | &nbsp;&nbsp;&nbsp;&nbsp;1639763 | &nbsp;&nbsp;&nbsp;&nbsp;58482 | &nbsp;&nbsp;&nbsp;&nbsp;(834247) | &nbsp;&nbsp;&nbsp;&nbsp;10741029 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;2397748 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;782845 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;440041 | &nbsp;&nbsp;&nbsp;(11576) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;701 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2729677 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;2411586 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;990508 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;549784 | &nbsp;&nbsp;&nbsp;&nbsp;19157 | &nbsp;&nbsp;&nbsp;&nbsp;(190769) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2680698 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;8870494 | &nbsp;&nbsp;&nbsp;&nbsp;2751394 | &nbsp;&nbsp;&nbsp;&nbsp;1298756 | &nbsp;&nbsp;&nbsp;&nbsp;41818 | &nbsp;&nbsp;&nbsp;&nbsp;(335289) | &nbsp;&nbsp;&nbsp;&nbsp;10029661 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;7728444 | &nbsp;&nbsp;&nbsp;&nbsp;1738077 | &nbsp;&nbsp;&nbsp;&nbsp;1257277 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3980 | &nbsp;&nbsp;&nbsp;&nbsp;620631 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8833855 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;3496418 | &nbsp;&nbsp;&nbsp;&nbsp;1551811 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;806330 | &nbsp;&nbsp;&nbsp;(63698) | &nbsp;&nbsp;&nbsp;&nbsp;196091 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4374292 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;10621334 | &nbsp;&nbsp;&nbsp;&nbsp;3378006 | &nbsp;&nbsp;&nbsp;&nbsp;1986628 | &nbsp;&nbsp;&nbsp;&nbsp;(7460) | &nbsp;&nbsp;&nbsp;&nbsp;(121658) | &nbsp;&nbsp;&nbsp;&nbsp;11883594 |
|  | $192800511 | $64741018 | $42169939 | &nbsp;&nbsp;&nbsp;$62644 | $2549488 | $217983722 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;$227697 | &nbsp;&nbsp;&nbsp;$686387 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54046 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;139316 | &nbsp;&nbsp;&nbsp;&nbsp;375189 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;790560 | &nbsp;&nbsp;&nbsp;&nbsp;283615 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;695467 | &nbsp;&nbsp;&nbsp;1294962 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;81762 | &nbsp;&nbsp;&nbsp;&nbsp;276629 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;409061 | &nbsp;&nbsp;&nbsp;&nbsp;729995 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;354639 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55476 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;261505 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15964 | &nbsp;&nbsp;&nbsp;1220369 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;215417 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;220716 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;120632 | &nbsp;&nbsp;&nbsp;&nbsp;316164 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;164735 | &nbsp;&nbsp;&nbsp;&nbsp;683567 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;227532 | &nbsp;&nbsp;&nbsp;&nbsp;364336 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;667067 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;184888 | &nbsp;&nbsp;&nbsp;&nbsp;810571 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72666 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;84376 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83089 | &nbsp;&nbsp;&nbsp;&nbsp;822054 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;178636 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;178043 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;231215 | &nbsp;&nbsp;&nbsp;&nbsp;767686 |
|  | $4963062 | $9382967 |

---

------

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** |
| **Affiliated Issuers** | **Beginning<br> Value** | **Purchases** | **Sales<br> Proceeds** | **Realized<br> Gain<br> (Loss)** | **Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | **Ending<br> Value** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;$843043 | &nbsp;&nbsp;&nbsp;&nbsp;$926839 | &nbsp;&nbsp;&nbsp;$218609 | &nbsp;&nbsp;&nbsp;&nbsp;$(181) | $(38060) | &nbsp;&nbsp;&nbsp;$1513032 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;184410 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;174936 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49092 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;127 | &nbsp;&nbsp;&nbsp;&nbsp;16733 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;327114 |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;934078 | &nbsp;&nbsp;&nbsp;&nbsp;1017543 | &nbsp;&nbsp;&nbsp;&nbsp;333447 | &nbsp;&nbsp;&nbsp;&nbsp;8157 | &nbsp;&nbsp;&nbsp;&nbsp;56346 | &nbsp;&nbsp;&nbsp;&nbsp;1682677 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;2007781 | &nbsp;&nbsp;&nbsp;&nbsp;1801467 | &nbsp;&nbsp;&nbsp;&nbsp;527464 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(237) | &nbsp;&nbsp;316754 | &nbsp;&nbsp;&nbsp;&nbsp;3598301 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1822350 | &nbsp;&nbsp;&nbsp;&nbsp;2169547 | &nbsp;&nbsp;&nbsp;&nbsp;548458 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;431 | (172690) | &nbsp;&nbsp;&nbsp;&nbsp;3271180 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;455586 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;646773 | &nbsp;&nbsp;&nbsp;&nbsp;182619 | &nbsp;&nbsp;&nbsp;&nbsp;2644 | (104638) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;817746 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;1003057 | &nbsp;&nbsp;&nbsp;&nbsp;1136044 | &nbsp;&nbsp;&nbsp;&nbsp;255105 | &nbsp;&nbsp;&nbsp;&nbsp;(3745) | &nbsp;&nbsp;&nbsp;(81104) | &nbsp;&nbsp;&nbsp;&nbsp;1799147 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;911087 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;994493 | &nbsp;&nbsp;&nbsp;&nbsp;296035 | &nbsp;&nbsp;&nbsp;&nbsp;(2954) | &nbsp;&nbsp;&nbsp;&nbsp;28454 | &nbsp;&nbsp;&nbsp;&nbsp;1635045 |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;184252 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;168926 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;51155 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;353 | &nbsp;&nbsp;&nbsp;&nbsp;24743 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;327119 |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;912373 | &nbsp;&nbsp;&nbsp;&nbsp;1019595 | &nbsp;&nbsp;&nbsp;&nbsp;299085 | &nbsp;&nbsp;&nbsp;&nbsp;(6257) | &nbsp;&nbsp;&nbsp;&nbsp;8959 | &nbsp;&nbsp;&nbsp;&nbsp;1635585 |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;933984 | &nbsp;&nbsp;&nbsp;&nbsp;1115553 | &nbsp;&nbsp;&nbsp;&nbsp;310022 | &nbsp;&nbsp;&nbsp;&nbsp;2189 | &nbsp;&nbsp;&nbsp;(64922) | &nbsp;&nbsp;&nbsp;&nbsp;1676782 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;439719 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;523233 | &nbsp;&nbsp;&nbsp;&nbsp;163263 | &nbsp;&nbsp;&nbsp;&nbsp;(5475) | &nbsp;&nbsp;&nbsp;&nbsp;23525 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;817739 |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;425051 | &nbsp;&nbsp;&nbsp;&nbsp;2373412 | &nbsp;&nbsp;&nbsp;2158597 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(21) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;639795 |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;638532 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;602986 | &nbsp;&nbsp;&nbsp;&nbsp;169745 | &nbsp;&nbsp;&nbsp;&nbsp;(1609) | &nbsp;&nbsp;&nbsp;&nbsp;74728 | &nbsp;&nbsp;&nbsp;&nbsp;1144892 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;638262 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;662795 | &nbsp;&nbsp;&nbsp;&nbsp;172830 | &nbsp;&nbsp;&nbsp;&nbsp;(3311) | &nbsp;&nbsp;&nbsp;&nbsp;19963 | &nbsp;&nbsp;&nbsp;&nbsp;1144879 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;732703 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;761160 | &nbsp;&nbsp;&nbsp;&nbsp;195753 | &nbsp;&nbsp;&nbsp;&nbsp;(5528) | &nbsp;&nbsp;&nbsp;&nbsp;15870 | &nbsp;&nbsp;&nbsp;&nbsp;1308452 |
| MFS Mid Cap Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;911144 | &nbsp;&nbsp;&nbsp;&nbsp;1025409 | &nbsp;&nbsp;&nbsp;&nbsp;282744 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(91) | &nbsp;&nbsp;&nbsp;(17931) | &nbsp;&nbsp;&nbsp;&nbsp;1635787 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;912491 | &nbsp;&nbsp;&nbsp;&nbsp;1105772 | &nbsp;&nbsp;&nbsp;&nbsp;258413 | &nbsp;&nbsp;&nbsp;&nbsp;(1437) | (122937) | &nbsp;&nbsp;&nbsp;&nbsp;1635476 |
| MFS New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;227781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;266458 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;79194 | &nbsp;&nbsp;&nbsp;&nbsp;1244 | &nbsp;&nbsp;&nbsp;&nbsp;(7358) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;408931 |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;227871 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;291346 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;81839 | &nbsp;&nbsp;&nbsp;&nbsp;1542 | &nbsp;&nbsp;&nbsp;(30067) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;408853 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;843017 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;947385 | &nbsp;&nbsp;&nbsp;&nbsp;215026 | &nbsp;&nbsp;&nbsp;&nbsp;(1033) | &nbsp;&nbsp;&nbsp;(61322) | &nbsp;&nbsp;&nbsp;&nbsp;1513021 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;730238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;698555 | &nbsp;&nbsp;&nbsp;&nbsp;190197 | &nbsp;&nbsp;&nbsp;&nbsp;(1471) | &nbsp;&nbsp;&nbsp;&nbsp;71328 | &nbsp;&nbsp;&nbsp;&nbsp;1308453 |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;331066 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;438853 | &nbsp;&nbsp;&nbsp;&nbsp;127685 | &nbsp;&nbsp;&nbsp;&nbsp;(1334) | &nbsp;&nbsp;&nbsp;&nbsp;13305 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;654205 |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;1003602 | &nbsp;&nbsp;&nbsp;&nbsp;1112679 | &nbsp;&nbsp;&nbsp;&nbsp;280435 | &nbsp;&nbsp;&nbsp;&nbsp;(3557) | &nbsp;&nbsp;&nbsp;(33103) | &nbsp;&nbsp;&nbsp;&nbsp;1799186 |
|  | $18253478 | $21981759 | $7446812 | $(21583) | $(63445) | $32703397 |

---

------

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2065 Fund - continued** | **MFS Lifetime 2065 Fund - continued** |
| **Affiliated Issuers** | **Dividend<br> Income** | **Capital Gain<br> Distributions** |
| MFS Blended Research Core Equity Fund | &nbsp;&nbsp;$28267 | &nbsp;&nbsp;&nbsp;&nbsp;$85211 |
| MFS Blended Research Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;6641 |  |
| MFS Blended Research Growth Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;17166 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46230 |
| MFS Blended Research International Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;98252 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35248 |
| MFS Blended Research Mid Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;87124 | &nbsp;&nbsp;&nbsp;&nbsp;162225 |
| MFS Blended Research Small Cap Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;10199 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34508 |
| MFS Blended Research Value Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;51412 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91748 |
| MFS Commodity Strategy Fund | &nbsp;&nbsp;&nbsp;&nbsp;44048 |  |
| MFS Emerging Markets Equity Fund | &nbsp;&nbsp;&nbsp;&nbsp;6818 |  |
| MFS Global Real Estate Fund | &nbsp;&nbsp;&nbsp;&nbsp;32908 |  |
| MFS Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;1657 | &nbsp;&nbsp;&nbsp;&nbsp;150316 |
| MFS Inflation-Adjusted Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;25123 |  |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;&nbsp;25982 |  |
| MFS International Growth Fund | &nbsp;&nbsp;&nbsp;&nbsp;14896 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39040 |
| MFS International Intrinsic Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;20431 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;84780 |
| MFS International New Discovery Fund | &nbsp;&nbsp;&nbsp;&nbsp;28220 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45187 |
| MFS Mid Cap Growth Fund |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82718 |
| MFS Mid Cap Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;23132 | &nbsp;&nbsp;&nbsp;&nbsp;101413 |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;8790 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10434 |
| MFS Research Fund | &nbsp;&nbsp;&nbsp;&nbsp;10297 | &nbsp;&nbsp;&nbsp;&nbsp;101876 |
| MFS Research International Fund | &nbsp;&nbsp;&nbsp;&nbsp;22067 |  |
| MFS Total Return Bond Fund | &nbsp;&nbsp;&nbsp;&nbsp;21331 |  |
| MFS Value Fund | &nbsp;&nbsp;&nbsp;&nbsp;28300 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;96833 |
|  | $613061 | $1167767 |

---

------

### Report of Independent Registered Public Accounting Firm
To the Shareholders of MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund and MFS Lifetime 2065 Fund and the Board of Trustees of MFS Series Trust XII

**Opinion on the Financial Statements We have audited the accompanying statements of assets and liabilities of MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund and MFS Lifetime 2065 Fund (collectively referred to as the "Funds"), (ten of the funds constituting MFS Series Trust XII (the "Trust")), including the portfolios of investments, as of April 30, 2025, and the related statements of operations and changes in net assets and the financial highlights for each of the periods indicated in the table below and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of each of the Funds (ten of the funds constituting MFS Series Trust XII) at April 30, 2025, and the results of their operations, changes in net assets and financial highlights for each of the periods indicated in the table below, in conformity with U.S. generally accepted accounting principles.** 

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;**Individual fund constituting the MFS Series Trust XII** | **Statement of operations** | **Statements of changes in net assets** | **Financial Highlights** |
| &nbsp;&nbsp;MFS Lifetime Income Fund MFS Lifetime 2025 Fund MFS Lifetime 2030 Fund MFS Lifetime 2035 Fund MFS Lifetime 2040 Fund MFS Lifetime 2045 Fund MFS Lifetime 2050 Fund MFS Lifetime 2055 Fund MFS Lifetime 2060 Fund | For the year ended April 30, 2025 | For each of the two years in the<br> period ended April 30, 2025 | For each of the five years in the<br> period ended April 30, 2025 |
| &nbsp;&nbsp;MFS Lifetime 2065 Fund | For the year ended April 30, 2025 | For each of the two years in the<br> period ended April 30, 2025 | For each of the three years in the<br> period ended April 30, 2025 and<br> the period from September 1, 2021<br> (commencement of operations)<br> through April 30, 2022 |

---

#### Basis for Opinion
These financial statements are the responsibility of the Trust's management. Our responsibility is to express an opinion on each of the Funds' financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Trust in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were we engaged to perform, an audit of the Trust's internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as of April 30, 2025, by correspondence with the custodian, brokers and others; when replies were not received from brokers and others, we performed other auditing procedures. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ Ernst & Young LLP

We have served as the auditor of one or more MFS investment companies since 1993.

Boston, Massachusetts

June 13, 2025

------

### Results of Shareholder Meeting (unaudited)
At a special meeting of shareholders of MFS Series Trust XII, which was held on November 14, 2024, the following action was taken:

#### Item 1: To elect the following individuals as Trustees:

---

| | | |
|:---|:---|:---|
|  | **Number of Dollars** | **Number of Dollars** |
| **Nominee** | **For** | &nbsp;&nbsp;&nbsp;**Against/Withheld** |
| Steven E. Buller | 2560251800.049 | &nbsp;&nbsp;&nbsp;50047454.697 |
| John A. Caroselli | 2550653388.160 | &nbsp;&nbsp;&nbsp;59645866.376 |
| Maureen R. Goldfarb | 2545243569.344 | &nbsp;&nbsp;&nbsp;65055685.210 |
| Peter D. Jones | 2551269018.791 | &nbsp;&nbsp;&nbsp;59030235.745 |
| John P. Kavanaugh | 2550561372.721 | &nbsp;&nbsp;&nbsp;59737881.814 |
| James W. Kilman, Jr. | 2550172878.682 | &nbsp;&nbsp;&nbsp;60126375.853 |
| Clarence Otis, Jr. | 2551247004.181 | &nbsp;&nbsp;&nbsp;59052250.354 |
| Michael W. Roberge | 2550009104.740 | &nbsp;&nbsp;&nbsp;60290149.795 |
| Maryanne L. Roepke | 2545419366.917 | &nbsp;&nbsp;&nbsp;64879887.637 |
| Paula E. Smith | 2534933959.058 | &nbsp;&nbsp;&nbsp;75365295.496 |
| Laurie J. Thomsen | 2544782084.655 | &nbsp;&nbsp;&nbsp;65517169.899 |
| Darrell A. Williams | 2540912957.455 | &nbsp;&nbsp;&nbsp;69386297.081 |

---

------

#### Federal Tax Information (unaudited)
The funds will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

The funds designate the maximum amount allowable as qualified dividend income eligible to be taxed at the same rate as long-term capital gain.

The funds below designated the following amounts as capital gain dividends paid during the fiscal year:

---

| | |
|:---|:---|
|  | **Capital<br> Gains** |
| MFS Lifetime Income Fund | $19663000 |
| MFS Lifetime 2025 Fund | $12960000 |
| MFS Lifetime 2030 Fund | $37477000 |
| MFS Lifetime 2035 Fund | $14497000 |
| MFS Lifetime 2040 Fund | $19871000 |
| MFS Lifetime 2045 Fund | $12774000 |
| MFS Lifetime 2050 Fund | $13634000 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;$7755000 |
| MFS Lifetime 2060 Fund | &nbsp;&nbsp;$3810000 |
| MFS Lifetime 2065 Fund | &nbsp;&nbsp;&nbsp;&nbsp;$368000 |

---

For corporate shareholders, the percentages of the ordinary income dividends paid during the prior calendar year that qualify for the corporate dividends received deduction are as follows:

---

| | |
|:---|:---|
|  | **Dividends Received<br> Deductions** |
| MFS Lifetime Income Fund | &nbsp;&nbsp;5.02% |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;5.42% |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;8.16% |
| MFS Lifetime 2035 Fund | 12.33% |
| MFS Lifetime 2040 Fund | 16.51% |
| MFS Lifetime 2045 Fund | 18.44% |
| MFS Lifetime 2050 Fund | 20.35% |
| MFS Lifetime 2055 Fund | 20.64% |
| MFS Lifetime 2060 Fund | 21.47% |
| MFS Lifetime 2065 Fund | 20.55% |

---

The funds designate the maximum amount allowable as Section 199A dividends as defined in Proposed Treasury Regulation §1.199A-3(d).

The funds intend to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

------

#### ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
There is nothing to report for this item for MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund, and MFS Lifetime 2065 Fund.

#### ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund, and MFS Lifetime 2065 Fund.

#### ITEM 10. REMUNERATION PAID TO DIRECTORS, OFFICERS, AND OTHERS OF OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Lifetime Income Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, MFS Lifetime 2060 Fund, and MFS Lifetime 2065 Fund. See the Statements of Operations and Note 3 within the Notes to Financial Statements for more information.

#### ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.
Not Applicable.

------

MFS Core Bond Fund

#### ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
MFS Core Bond Fund

### Portfolio of Investments - 4/30/25
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – 99.2% | Bonds – 99.2% | Bonds – 99.2% |
| Asset-Backed & Securitized – 14.9% | Asset-Backed & Securitized – 14.9% | Asset-Backed & Securitized – 14.9% |
| AmeriCredit Automobile Receivables Trust, 2024-1, "A2-A", 5.75%, 2/18/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;18274 | &nbsp;&nbsp;$18321 |
| Angel Oak Mortgage Trust, 2024-10, "A1", 5.348%, 10/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;97734 | &nbsp;&nbsp;&nbsp;&nbsp; **97512** |
| Angel Oak Mortgage Trust, 2024-12, "A1", 5.653%, 10/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;93044 | &nbsp;&nbsp;&nbsp;&nbsp; **93279** |
| Angel Oak Mortgage Trust, 2024-9, "A1", 5.138%, 9/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;56609 | &nbsp;&nbsp;&nbsp;&nbsp; **56297** |
| Arbor Realty Trust, Inc., CLO, 2021-FL3, "B", FLR, 6.036% ((SOFR - 1mo. + 0.11448%) + 1.6%), 8/15/2034 (n) | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **197831** |
| ARI Fleet Lease Trust, 2023-B, "A2", 6.05%, 7/15/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;60775 | &nbsp;&nbsp;&nbsp;&nbsp; **61252** |
| Bain Capital Credit CLO Ltd., 2020-3A, "BRR", FLR, 5.879% (SOFR - 3mo. + 1.6%), 10/23/2034 (n) | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **196785** |
| Benchmark 2023-V3 Mortgage Trust, "A3", 6.363%, 7/15/2056 | &nbsp;&nbsp;&nbsp;&nbsp;10878 | &nbsp;&nbsp;&nbsp;&nbsp; **11413** |
| BSPRT 2021-FL6 Issuer Ltd., "C", FLR, 6.486% ((SOFR - 1mo. + 0.11448%) + 2.05%), 3/15/2036 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **98763** |
| Business Jet Securities LLC, 2024-1A, "A", 6.197%, 5/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;85093 | &nbsp;&nbsp;&nbsp;&nbsp; **86189** |
| Chesapeake Funding II LLC, 2023-1A, "A1", 5.65%, 5/15/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;45553 | &nbsp;&nbsp;&nbsp;&nbsp; **45816** |
| Colt Funding LLC, 2024-5, "A1", 5.123%, 8/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;91048 | &nbsp;&nbsp;&nbsp;&nbsp; **90550** |
| Commercial Mortgage Pass-Through Certificates, 2023-BNK46, "A4", 5.745%, 8/15/2056 | &nbsp;&nbsp;&nbsp;145414 | &nbsp;&nbsp;&nbsp;&nbsp; **151633** |
| Commercial Mortgage Trust, 2015-PC1, "A5", 3.902%, 7/10/2050 | &nbsp;&nbsp;&nbsp;&nbsp;32702 | &nbsp;&nbsp;&nbsp;&nbsp; **32656** |
| Consumers 2023 Securitization Funding LLC, 5.55%, 3/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;26518 | &nbsp;&nbsp;&nbsp;&nbsp; **26907** |
| Dryden Senior Loan Fund, 2019-68A, "BRR", CLO, FLR, 5.806% (SOFR - 3mo. + 1.55%), 7/15/2035 (n) | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **245646** |
| Dryden Senior Loan Fund, 2022-113A, "AR2", CLO, FLR, 5.506% (SOFR - 3mo. + 1.25%), 10/15/2037 (n) | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **248601** |
| ELM Trust, 2024-ELM, "B10", 5.995%, 6/10/2039 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **101093** |
| Empire District Bondco LLC, 4.943%, 1/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;37379 | &nbsp;&nbsp;&nbsp;&nbsp; **37744** |
| Enterprise Fleet Financing 2023-1 LLC, "A2", 5.51%, 1/22/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;21402 | &nbsp;&nbsp;&nbsp;&nbsp; **21466** |
| Enterprise Fleet Financing 2024-4 LLC, "A2", 4.69%, 7/20/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;50000 | &nbsp;&nbsp;&nbsp;&nbsp; **50124** |
| GLS Auto Select Receivables Trust, 2023-1A, "A2", 6.27%, 8/16/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9504 | &nbsp;&nbsp;&nbsp;&nbsp; **9527** |
| Hyundai Auto Lease Securitization Trust, 2025-B, 4.58%, 9/15/2027 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **100074** |
| KREF 2018-FT1 Ltd., "A", FLR, 5.513% ((SOFR - 1mo. + 0.11448%) + 1.07%), 2/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;97832 | &nbsp;&nbsp;&nbsp;&nbsp; **97325** |
| Kubota Credit Owner Trust, 2023-2A, "A2", 5.61%, 7/15/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;23236 | &nbsp;&nbsp;&nbsp;&nbsp; **23269** |
| LoanCore 2021-CRE5 Ltd., "B", FLR, 6.436% ((SOFR - 1mo. + 0.11448%) + 2.0%), 7/15/2036 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **99541** |
| MF1 2021-FL7 Ltd., "AS", FLR, 5.884% ((SOFR - 1mo. + 0.11448%) + 1.45%), 10/16/2036 (n) | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **248036** |
| MF1 2022-FL10 Ltd., "AS", FLR, 7.506% (SOFR - 1mo. + 3.187%), 9/17/2037 (n) | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **249753** |
| MF1 2022-FL8 Ltd., "B", FLR, 6.269% (SOFR - 30 day + 1.95%), 2/19/2037 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **97611** |
| MF1 2024-FL15 Ltd., "AS", FLR, 6.36% (SOFR - 1mo. + 2.04%), 8/18/2041 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **99750** |
| MF1 2024-FL16 Ltd., "A", FLR, 5.861% (SOFR - 1mo. + 1.541%), 11/18/2039 (n) | &nbsp;&nbsp;&nbsp;154790 | &nbsp;&nbsp;&nbsp;&nbsp; **154596** |
| MSWF Commercial Mortgage Trust, 2023-2, "A5", 6.014%, 12/15/2056 | &nbsp;&nbsp;&nbsp;&nbsp;69165 | &nbsp;&nbsp;&nbsp;&nbsp; **73834** |
| Nissan Master Owner Trust, 2024-A, "A", FLR, 5.015% (SOFR - 1mo. + 0.67%), 2/15/2028 (n) | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **100119** |
| OBX Trust, 2024-NQM10, "A2", 6.332%, 5/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;82134 | &nbsp;&nbsp;&nbsp;&nbsp; **82867** |
| OBX Trust, 2024-NQM15, "A1", 5.316%, 10/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;90414 | &nbsp;&nbsp;&nbsp;&nbsp; **90326** |
| OneMain Financial Issuance Trust, 2022-3A, "A", 5.94%, 5/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;66261 | &nbsp;&nbsp;&nbsp;&nbsp; **66584** |
| Palmer Square Loan Funding 2024-3A Ltd., "A-2", FLR, 5.947% (SOFR - 3mo. + 1.65%), 8/08/2032 (n) | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **249437** |
| PFP III 2024-11 Ltd., "11A", FLR, 6.133% (SOFR - 1mo. + 1.83239%), 9/17/2039 (n) | &nbsp;&nbsp;&nbsp;160977 | &nbsp;&nbsp;&nbsp;&nbsp; **160496** |
| Ready Capital Mortgage Financing LLC, 2022-FL9, FLR, 7.438% (SOFR - 1mo. + 3.111%), 6/25/2037 (n) | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **250000** |
| Santander Drive Auto Receivables Trust, 2025-1, "A2", 4.76%, 8/16/2027 | &nbsp;&nbsp;&nbsp;116886 | &nbsp;&nbsp;&nbsp;&nbsp; **116889** |
| SBNA Auto Lease Trust, 2024-C, "A2", 4.94%, 11/20/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6614 | &nbsp;&nbsp;&nbsp;&nbsp; **6617** |
| Venture CLO 43 Ltd., 2021-43A, "BR", FLR, 6.106% (SOFR - 3mo. + 1.85%), 4/15/2034 (n) | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **147657** |
| Verus Securitization Trust, 2024-8, "A1", 5.364%, 10/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;92473 | &nbsp;&nbsp;&nbsp;&nbsp; **92347** |
| Virginia Power Fuel Securitization LLC, 5.088%, 5/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;38324 | &nbsp;&nbsp;&nbsp;&nbsp; **38644** |
| Wells Fargo Commercial Mortgage Trust, 2017-RB1, "A5", 3.635%, 3/15/2050 | &nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;&nbsp;&nbsp; **168602** |
|  |  | &nbsp;&nbsp; **$4793779** |
| Automotive – 0.5% | Automotive – 0.5% | Automotive – 0.5% |
| Stellantis Finance US, Inc., 2.691%, 9/15/2031 (n) | $&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;$164925 |

---

MCBFS-ANN

------

MFS Core Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Broadcasting – 0.2% | Broadcasting – 0.2% | Broadcasting – 0.2% |
| Walt Disney Co., 3.5%, 5/13/2040 | $&nbsp;&nbsp;&nbsp;&nbsp;68000 | &nbsp;&nbsp;$55097 |
| Brokerage & Asset Managers – 1.6% | Brokerage & Asset Managers – 1.6% | Brokerage & Asset Managers – 1.6% |
| Charles Schwab Corp., 5.853% to 5/19/2033, FLR (SOFR - 1 day + 2.5%) to 5/19/2034 | $&nbsp;&nbsp;&nbsp;198000 | &nbsp;&nbsp;$206880 |
| Intercontinental Exchange, Inc., 2.1%, 6/15/2030 | &nbsp;&nbsp;&nbsp;103000 | &nbsp;&nbsp;&nbsp;&nbsp; **91989** |
| LPL Holdings, Inc., 4.625%, 11/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;43000 | &nbsp;&nbsp;&nbsp;&nbsp; **42801** |
| LPL Holdings, Inc., 6.75%, 11/17/2028 | &nbsp;&nbsp;&nbsp;&nbsp;11000 | &nbsp;&nbsp;&nbsp;&nbsp; **11693** |
| LPL Holdings, Inc., 4.375%, 5/15/2031 (n) | &nbsp;&nbsp;&nbsp;178000 | &nbsp;&nbsp;&nbsp;&nbsp; **169602** |
|  |  | &nbsp;&nbsp; **$522965** |
| Building – 0.3% | Building – 0.3% | Building – 0.3% |
| Masco Corp., 2%, 2/15/2031 | $&nbsp;&nbsp;&nbsp;117000 | &nbsp;&nbsp;$99148 |
| Business Services – 1.4% | Business Services – 1.4% | Business Services – 1.4% |
| Equinix, Inc., 1.8%, 7/15/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;83000 | &nbsp;&nbsp;$78515 |
| Equinix, Inc., 2.5%, 5/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;69000 | &nbsp;&nbsp;&nbsp;&nbsp; **60416** |
| Fiserv, Inc., 2.65%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;88000 | &nbsp;&nbsp;&nbsp;&nbsp; **79489** |
| Global Payments, Inc., 1.2%, 3/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;87000 | &nbsp;&nbsp;&nbsp;&nbsp; **84267** |
| Global Payments, Inc., 2.9%, 11/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;77000 | &nbsp;&nbsp;&nbsp;&nbsp; **66818** |
| Verisk Analytics, Inc., 5.75%, 4/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;70000 | &nbsp;&nbsp;&nbsp;&nbsp; **72476** |
|  |  | &nbsp;&nbsp; **$441981** |
| Cable TV – 0.9% | Cable TV – 0.9% | Cable TV – 0.9% |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 6.384%, 10/23/2035 | $&nbsp;&nbsp;&nbsp;&nbsp;69000 | &nbsp;&nbsp;$69845 |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 5.375%, 5/01/2047 | &nbsp;&nbsp;&nbsp;&nbsp;98000 | &nbsp;&nbsp;&nbsp;&nbsp; **79511** |
| Cox Communications, Inc., 1.8%, 10/01/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;88000 | &nbsp;&nbsp;&nbsp;&nbsp; **75094** |
| Time Warner Entertainment Co. LP, 8.375%, 7/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;58000 | &nbsp;&nbsp;&nbsp;&nbsp; **66019** |
|  |  | &nbsp;&nbsp; **$290469** |
| Computer Software – 0.3% | Computer Software – 0.3% | Computer Software – 0.3% |
| Oracle Corp., 4.9%, 2/06/2033 | $&nbsp;&nbsp;&nbsp;&nbsp;22000 | &nbsp;&nbsp;$21627 |
| Roper Technologies, Inc., 2%, 6/30/2030 | &nbsp;&nbsp;&nbsp;&nbsp;89000 | &nbsp;&nbsp;&nbsp;&nbsp; **77878** |
|  |  | &nbsp;&nbsp; **$99505** |
| Conglomerates – 0.4% | Conglomerates – 0.4% | Conglomerates – 0.4% |
| Westinghouse Air Brake Technologies Corp., 3.2%, 6/15/2025 | $&nbsp;&nbsp;&nbsp;129000 | &nbsp;&nbsp;$128706 |
| Consumer Products – 0.2% | Consumer Products – 0.2% | Consumer Products – 0.2% |
| Kenvue, Inc., 4.9%, 3/22/2033 | $&nbsp;&nbsp;&nbsp;&nbsp;60000 | &nbsp;&nbsp;$60728 |
| Consumer Services – 0.4% | Consumer Services – 0.4% | Consumer Services – 0.4% |
| Booking Holdings, Inc., 4.625%, 4/13/2030 | $&nbsp;&nbsp;&nbsp;138000 | &nbsp;&nbsp;$139088 |
| Electrical Equipment – 0.4% | Electrical Equipment – 0.4% | Electrical Equipment – 0.4% |
| Arrow Electronics, Inc., 2.95%, 2/15/2032 | $&nbsp;&nbsp;&nbsp;147000 | &nbsp;&nbsp;$126024 |
| Electronics – 0.5% | Electronics – 0.5% | Electronics – 0.5% |
| Broadcom, Inc., 4.3%, 11/15/2032 | $&nbsp;&nbsp;&nbsp;&nbsp;63000 | &nbsp;&nbsp;$60212 |
| Broadcom, Inc., 4.926%, 5/15/2037 (n) | &nbsp;&nbsp;&nbsp;108000 | &nbsp;&nbsp;&nbsp;&nbsp; **103437** |
|  |  | &nbsp;&nbsp; **$163649** |

---

------

MFS Core Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Energy - Integrated – 0.7% | Energy - Integrated – 0.7% | Energy - Integrated – 0.7% |
| Eni S.p.A., 5.5%, 5/15/2034 (n) | $&nbsp;&nbsp;&nbsp;208000 | &nbsp;&nbsp;$206146 |
| Financial Institutions – 0.9% | Financial Institutions – 0.9% | Financial Institutions – 0.9% |
| AerCap Ireland Capital DAC/AerCap Global Aviation Trust, 2.45%, 10/29/2026 | $&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;$145103 |
| Avolon Holdings Funding Ltd., 4.375%, 5/01/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;79000 | &nbsp;&nbsp;&nbsp;&nbsp; **78403** |
| Avolon Holdings Funding Ltd., 3.25%, 2/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;78000 | &nbsp;&nbsp;&nbsp;&nbsp; **75513** |
|  |  | &nbsp;&nbsp; **$299019** |
| Food & Beverages – 1.8% | Food & Beverages – 1.8% | Food & Beverages – 1.8% |
| Anheuser-Busch InBev Worldwide, Inc., 4.375%, 4/15/2038 | $&nbsp;&nbsp;&nbsp;163000 | &nbsp;&nbsp;$148970 |
| Anheuser-Busch InBev Worldwide, Inc., 8%, 11/15/2039 | &nbsp;&nbsp;&nbsp;123000 | &nbsp;&nbsp;&nbsp;&nbsp; **154242** |
| Diageo Capital PLC, 2.375%, 10/24/2029 | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **184204** |
| Mars, Inc., 5.2%, 3/01/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;81000 | &nbsp;&nbsp;&nbsp;&nbsp; **81318** |
|  |  | &nbsp;&nbsp; **$568734** |
| Gaming & Lodging – 0.7% | Gaming & Lodging – 0.7% | Gaming & Lodging – 0.7% |
| GLP Capital LP/GLP Financing II, Inc., 5.3%, 1/15/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;64000 | &nbsp;&nbsp;$63938 |
| Las Vegas Sands Corp., 3.9%, 8/08/2029 | &nbsp;&nbsp;&nbsp;&nbsp;65000 | &nbsp;&nbsp;&nbsp;&nbsp; **60353** |
| Marriott International, Inc., 4.625%, 6/15/2030 | &nbsp;&nbsp;&nbsp;108000 | &nbsp;&nbsp;&nbsp;&nbsp; **107342** |
|  |  | &nbsp;&nbsp; **$231633** |
| Insurance – 0.8% | Insurance – 0.8% | Insurance – 0.8% |
| Corebridge Financial, Inc., 3.9%, 4/05/2032 | $&nbsp;&nbsp;&nbsp;&nbsp;82000 | &nbsp;&nbsp;$75498 |
| Corebridge Financial, Inc., 5.75%, 1/15/2034 | &nbsp;&nbsp;&nbsp;&nbsp;42000 | &nbsp;&nbsp;&nbsp;&nbsp; **42808** |
| Metropolitan Life Global Funding I, 3.3%, 3/21/2029 (n) | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **144224** |
|  |  | &nbsp;&nbsp; **$262530** |
| Insurance - Health – 0.1% | Insurance - Health – 0.1% | Insurance - Health – 0.1% |
| Humana, Inc., 5.875%, 3/01/2033 | $&nbsp;&nbsp;&nbsp;&nbsp;38000 | &nbsp;&nbsp;$38915 |
| Insurance - Property & Casualty – 0.7% | Insurance - Property & Casualty – 0.7% | Insurance - Property & Casualty – 0.7% |
| Aon Corp., 4.5%, 12/15/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;61000 | &nbsp;&nbsp;$61283 |
| Brown & Brown, Inc., 4.2%, 3/17/2032 | &nbsp;&nbsp;&nbsp;&nbsp;84000 | &nbsp;&nbsp;&nbsp;&nbsp; **78231** |
| Fairfax Financial Holdings Ltd., 5.625%, 8/16/2032 | &nbsp;&nbsp;&nbsp;&nbsp;85000 | &nbsp;&nbsp;&nbsp;&nbsp; **86383** |
|  |  | &nbsp;&nbsp; **$225897** |
| Machinery & Tools – 0.9% | Machinery & Tools – 0.9% | Machinery & Tools – 0.9% |
| Ashtead Capital, Inc., 5.5%, 8/11/2032 (n) | $&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;$198320 |
| CNH Industrial Capital LLC, 1.875%, 1/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;79000 | &nbsp;&nbsp;&nbsp;&nbsp; **77400** |
|  |  | &nbsp;&nbsp; **$275720** |
| Major Banks – 7.3% | Major Banks – 7.3% | Major Banks – 7.3% |
| Bank of America Corp., 2.572% to 10/20/2031, FLR (SOFR - 1 day + 1.21%) to 10/20/2032 | $&nbsp;&nbsp;&nbsp;302000 | &nbsp;&nbsp;$262447 |
| Capital One Financial Corp., 3.273% to 3/01/2029, FLR (SOFR - 1 day + 1.79%) to 3/01/2030 | &nbsp;&nbsp;&nbsp;160000 | &nbsp;&nbsp;&nbsp;&nbsp; **150779** |
| Deutsche Bank AG, 2.311% to 11/16/2026, FLR (SOFR - 1 day + 1.219%) to 11/16/2027 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **144433** |
| Deutsche Bank AG, 6.72% to 1/18/2028, FLR (SOFR - 1 day + 3.18%) to 1/18/2029 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **157287** |
| Goldman Sachs Group, Inc., 2.6%, 2/07/2030 | &nbsp;&nbsp;&nbsp;172000 | &nbsp;&nbsp;&nbsp;&nbsp; **157095** |
| Goldman Sachs Group, Inc., 2.383% to 7/21/2031, FLR (SOFR - 1 day + 1.248%) to 7/21/2032 | &nbsp;&nbsp;&nbsp;&nbsp;98000 | &nbsp;&nbsp;&nbsp;&nbsp; **84415** |
| JPMorgan Chase & Co., 4.323% to 4/26/2027, FLR (SOFR - 1 day + 1.56%) to 4/26/2028 | &nbsp;&nbsp;&nbsp;&nbsp;74000 | &nbsp;&nbsp;&nbsp;&nbsp; **73904** |
| JPMorgan Chase & Co., 2.956% to 5/13/2030, FLR (SOFR - 1 day + 2.515%) to 5/13/2031 | &nbsp;&nbsp;&nbsp;&nbsp;72000 | &nbsp;&nbsp;&nbsp;&nbsp; **65807** |
| JPMorgan Chase & Co., 2.963% to 1/25/2032, FLR (SOFR - 1 day + 1.26%) to 1/25/2033 | &nbsp;&nbsp;&nbsp;&nbsp;69000 | &nbsp;&nbsp;&nbsp;&nbsp; **61163** |
| JPMorgan Chase & Co., 3.109% to 4/22/2040, FLR (SOFR - 1 day + 2.46%) to 4/22/2041 | &nbsp;&nbsp;&nbsp;102000 | &nbsp;&nbsp;&nbsp;&nbsp; **77212** |
| JPMorgan Chase & Co., 3.157% to 4/22/2041, FLR (SOFR - 1 day + 1.46%) to 4/22/2042 | &nbsp;&nbsp;&nbsp;152000 | &nbsp;&nbsp;&nbsp;&nbsp; **113433** |

---

------

MFS Core Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Major Banks – continued | Major Banks – continued | Major Banks – continued |
| Mitsubishi UFJ Financial Group, Inc., 5.615%, 4/24/2036 | $&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;$204316 |
| Morgan Stanley, 1.512% to 7/20/2026, FLR (SOFR - 1 day + 0.858%) to 7/20/2027 | &nbsp;&nbsp;&nbsp;131000 | &nbsp;&nbsp;&nbsp;&nbsp; **126475** |
| Morgan Stanley, 2.699% to 1/22/2030, FLR (SOFR - 1 day + 1.143%) to 1/22/2031 | &nbsp;&nbsp;&nbsp;&nbsp;97000 | &nbsp;&nbsp;&nbsp;&nbsp; **88601** |
| Morgan Stanley, 2.943% to 1/21/2032, FLR (SOFR - 1 day + 1.29%) to 1/21/2033 | &nbsp;&nbsp;&nbsp;127000 | &nbsp;&nbsp;&nbsp;&nbsp; **111554** |
| PNC Financial Services Group, Inc., 5.676% to 1/22/2034, FLR (SOFR - 1 day + 1.902%) to 1/22/2035 | &nbsp;&nbsp;&nbsp;147000 | &nbsp;&nbsp;&nbsp;&nbsp; **149828** |
| UBS Group AG, 2.095% to 2/11/2031, FLR (CMT - 1yr. + 1.0%) to 2/11/2032 (n) | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **170876** |
| Wells Fargo & Co., 3.35% to 3/02/2032, FLR (SOFR - 1 day + 1.5%) to 3/02/2033 | &nbsp;&nbsp;&nbsp;162000 | &nbsp;&nbsp;&nbsp;&nbsp; **145456** |
|  |  | &nbsp;&nbsp; **$2345081** |
| Medical & Health Technology & Services – 1.1% | Medical & Health Technology & Services – 1.1% | Medical & Health Technology & Services – 1.1% |
| Adventist Health System/West, 5.43%, 3/01/2032 | $&nbsp;&nbsp;&nbsp;&nbsp;75000 | &nbsp;&nbsp;$75516 |
| Alcon Finance Corp., 2.6%, 5/27/2030 (n) | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **180071** |
| CVS Health Corp., 5.3%, 6/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;85000 | &nbsp;&nbsp;&nbsp;&nbsp; **84419** |
|  |  | &nbsp;&nbsp; **$340006** |
| Metals & Mining – 0.9% | Metals & Mining – 0.9% | Metals & Mining – 0.9% |
| Anglo American Capital PLC, 5.625%, 4/01/2030 (n) | $&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;$205061 |
| Glencore Funding LLC, 2.5%, 9/01/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;87000 | &nbsp;&nbsp;&nbsp;&nbsp; **77072** |
|  |  | &nbsp;&nbsp; **$282133** |
| Midstream – 1.6% | Midstream – 1.6% | Midstream – 1.6% |
| DCP Midstream Operating LP, 3.25%, 2/15/2032 | $&nbsp;&nbsp;&nbsp;167000 | &nbsp;&nbsp;$143477 |
| Plains All American Pipeline LP, 3.8%, 9/15/2030 | &nbsp;&nbsp;&nbsp;174000 | &nbsp;&nbsp;&nbsp;&nbsp; **163999** |
| Sabine Pass Liquefaction LLC, 4.5%, 5/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;75000 | &nbsp;&nbsp;&nbsp;&nbsp; **73969** |
| Targa Resources Corp., 6.125%, 3/15/2033 | &nbsp;&nbsp;&nbsp;138000 | &nbsp;&nbsp;&nbsp;&nbsp; **142012** |
|  |  | &nbsp;&nbsp; **$523457** |
| Mortgage-Backed – 25.2% | Mortgage-Backed – 25.2% |  |
| Fannie Mae, 5.352%, 2/25/2045 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;28184 | &nbsp;&nbsp;$28052 |
| Fannie Mae, 3.5%, 3/01/2046 | &nbsp;&nbsp;&nbsp;&nbsp;26007 | &nbsp;&nbsp;&nbsp;&nbsp; **23984** |
| Fannie Mae, 3%, 8/01/2046 | &nbsp;&nbsp;&nbsp;&nbsp;27687 | &nbsp;&nbsp;&nbsp;&nbsp; **24644** |
| Fannie Mae, TBA, 5%, 5/25/2055 | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **97882** |
| Fannie Mae, UMBS, 2.5%, 5/01/2037 - 5/01/2052 | 1282531 | &nbsp;&nbsp;&nbsp;&nbsp; **1075433** |
| Fannie Mae, UMBS, 5%, 10/01/2037 - 6/01/2053 | &nbsp;&nbsp;&nbsp;196965 | &nbsp;&nbsp;&nbsp;&nbsp; **193440** |
| Fannie Mae, UMBS, 5.5%, 10/01/2038 - 11/01/2053 | &nbsp;&nbsp;&nbsp;&nbsp;95137 | &nbsp;&nbsp;&nbsp;&nbsp; **95256** |
| Fannie Mae, UMBS, 2%, 7/01/2042 - 7/01/2052 | &nbsp;&nbsp;&nbsp;542352 | &nbsp;&nbsp;&nbsp;&nbsp; **446247** |
| Fannie Mae, UMBS, 3%, 5/01/2043 - 8/01/2052 | &nbsp;&nbsp;&nbsp;361816 | &nbsp;&nbsp;&nbsp;&nbsp; **315164** |
| Fannie Mae, UMBS, 3.5%, 7/01/2043 - 3/01/2055 | &nbsp;&nbsp;&nbsp;232650 | &nbsp;&nbsp;&nbsp;&nbsp; **211735** |
| Fannie Mae, UMBS, 4%, 9/01/2046 - 11/01/2052 | &nbsp;&nbsp;&nbsp;145928 | &nbsp;&nbsp;&nbsp;&nbsp; **136894** |
| Fannie Mae, UMBS, 1.5%, 6/01/2051 | &nbsp;&nbsp;&nbsp;&nbsp;82025 | &nbsp;&nbsp;&nbsp;&nbsp; **61993** |
| Fannie Mae, UMBS, 4.5%, 6/01/2052 - 9/01/2052 | &nbsp;&nbsp;&nbsp;&nbsp;99941 | &nbsp;&nbsp;&nbsp;&nbsp; **95821** |
| Fannie Mae, UMBS, 6%, 11/01/2052 - 7/01/2054 | &nbsp;&nbsp;&nbsp;182275 | &nbsp;&nbsp;&nbsp;&nbsp; **185255** |
| Freddie Mac, 2.57%, 7/25/2026 | &nbsp;&nbsp;&nbsp;&nbsp;74909 | &nbsp;&nbsp;&nbsp;&nbsp; **73552** |
| Freddie Mac, 3.117%, 6/25/2027 | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **98170** |
| Freddie Mac, UMBS, 2%, 3/01/2037 - 11/01/2051 | &nbsp;&nbsp;&nbsp;103487 | &nbsp;&nbsp;&nbsp;&nbsp; **91688** |
| Freddie Mac, UMBS, 2.5%, 5/01/2037 - 6/01/2052 | &nbsp;&nbsp;&nbsp;&nbsp;84175 | &nbsp;&nbsp;&nbsp;&nbsp; **70249** |
| Freddie Mac, UMBS, 3%, 10/01/2037 - 6/01/2052 | &nbsp;&nbsp;&nbsp;409323 | &nbsp;&nbsp;&nbsp;&nbsp; **362926** |
| Freddie Mac, UMBS, 3.5%, 1/01/2041 - 5/01/2052 | &nbsp;&nbsp;&nbsp;173818 | &nbsp;&nbsp;&nbsp;&nbsp; **159615** |
| Freddie Mac, UMBS, 1.5%, 3/01/2051 | &nbsp;&nbsp;&nbsp;&nbsp;36578 | &nbsp;&nbsp;&nbsp;&nbsp; **27718** |
| Freddie Mac, UMBS, 4%, 7/01/2052 | &nbsp;&nbsp;&nbsp;190610 | &nbsp;&nbsp;&nbsp;&nbsp; **178143** |
| Freddie Mac, UMBS, 4.5%, 10/01/2052 | &nbsp;&nbsp;&nbsp;126193 | &nbsp;&nbsp;&nbsp;&nbsp; **120910** |
| Freddie Mac, UMBS, 5.5%, 4/01/2053 - 6/01/2053 | &nbsp;&nbsp;&nbsp;221515 | &nbsp;&nbsp;&nbsp;&nbsp; **222362** |
| Freddie Mac, UMBS, 6.5%, 8/01/2053 | &nbsp;&nbsp;&nbsp;&nbsp;24670 | &nbsp;&nbsp;&nbsp;&nbsp; **25480** |

---

------

MFS Core Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Mortgage-Backed – continued | Mortgage-Backed – continued |  |
| Freddie Mac, UMBS, 5%, 11/01/2053 | $&nbsp;&nbsp;&nbsp;&nbsp;92780 | &nbsp;&nbsp;$90997 |
| Freddie Mac, UMBS, 6%, 3/01/2054 - 6/01/2054 | &nbsp;&nbsp;&nbsp;134768 | &nbsp;&nbsp;&nbsp;&nbsp; **136734** |
| Ginnie Mae, 4.533%, 9/20/2041 | &nbsp;&nbsp;&nbsp;&nbsp;25170 | &nbsp;&nbsp;&nbsp;&nbsp; **24500** |
| Ginnie Mae, 3%, 1/20/2051 - 11/20/2052 | &nbsp;&nbsp;&nbsp;314278 | &nbsp;&nbsp;&nbsp;&nbsp; **278343** |
| Ginnie Mae, 2%, 2/20/2052 - 6/20/2052 | &nbsp;&nbsp;&nbsp;329315 | &nbsp;&nbsp;&nbsp;&nbsp; **268714** |
| Ginnie Mae, 2.5%, 2/20/2052 - 4/20/2052 | &nbsp;&nbsp;&nbsp;452869 | &nbsp;&nbsp;&nbsp;&nbsp; **386011** |
| Ginnie Mae, 3.5%, 6/20/2052 - 9/20/2052 | &nbsp;&nbsp;&nbsp;240268 | &nbsp;&nbsp;&nbsp;&nbsp; **218678** |
| Ginnie Mae, 4%, 7/20/2052 - 10/20/2052 | &nbsp;&nbsp;&nbsp;126259 | &nbsp;&nbsp;&nbsp;&nbsp; **118018** |
| Ginnie Mae, 4.5%, 9/20/2052 - 5/20/2053 | &nbsp;&nbsp;&nbsp;317431 | &nbsp;&nbsp;&nbsp;&nbsp; **305537** |
| Ginnie Mae, 5%, 1/20/2053 - 5/20/2053 | &nbsp;&nbsp;&nbsp;233778 | &nbsp;&nbsp;&nbsp;&nbsp; **230249** |
| Ginnie Mae, 5.5%, 2/20/2053 - 1/20/2055 | &nbsp;&nbsp;&nbsp;231277 | &nbsp;&nbsp;&nbsp;&nbsp; **231750** |
| Ginnie Mae, 6.5%, 7/20/2054 | &nbsp;&nbsp;&nbsp;&nbsp;47058 | &nbsp;&nbsp;&nbsp;&nbsp; **48169** |
| Ginnie Mae, TBA, 5.5%, 5/15/2055 | &nbsp;&nbsp;&nbsp;&nbsp;50000 | &nbsp;&nbsp;&nbsp;&nbsp; **49973** |
| Ginnie Mae, TBA, 6%, 6/15/2055 | &nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp;&nbsp; **126318** |
| UMBS, TBA, 2.5%, 5/25/2040 - 6/25/2055 | &nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;&nbsp;&nbsp; **275108** |
| UMBS, TBA, 2%, 5/25/2055 | &nbsp;&nbsp;&nbsp;425000 | &nbsp;&nbsp;&nbsp;&nbsp; **337008** |
| UMBS, TBA, 4%, 5/25/2055 | &nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp;&nbsp; **116481** |
| UMBS, TBA, 3%, 6/25/2055 | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **216965** |
| UMBS, TBA, 6.5%, 6/25/2055 | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **205774** |
|  |  | &nbsp;&nbsp; **$8087940** |
| Municipals – 0.6% | Municipals – 0.6% | Municipals – 0.6% |
| Massachusetts Educational Financing Authority, Education Loan Rev., Taxable, "A", 6.352%, 7/01/2049 | $&nbsp;&nbsp;&nbsp;&nbsp;95000 | &nbsp;&nbsp;$95290 |
| Rhode Island Student Loan Authority Education Loan Rev., Taxable, "1", 6.081%, 12/01/2042 | &nbsp;&nbsp;&nbsp;&nbsp;85000 | &nbsp;&nbsp;&nbsp;&nbsp; **86633** |
|  |  | &nbsp;&nbsp; **$181923** |
| Natural Gas - Distribution – 0.2% | Natural Gas - Distribution – 0.2% | Natural Gas - Distribution – 0.2% |
| NiSource, Inc., 5.65%, 2/01/2045 | $&nbsp;&nbsp;&nbsp;&nbsp;73000 | &nbsp;&nbsp;$69918 |
| Network & Telecom – 0.2% | Network & Telecom – 0.2% | Network & Telecom – 0.2% |
| Verizon Communications, Inc., 2.55%, 3/21/2031 | $&nbsp;&nbsp;&nbsp;&nbsp;57000 | &nbsp;&nbsp;$50752 |
| Oils – 0.2% | Oils – 0.2% | Oils – 0.2% |
| Marathon Petroleum Corp., 4.75%, 9/15/2044 | $&nbsp;&nbsp;&nbsp;&nbsp;83000 | &nbsp;&nbsp;$66593 |
| Other Banks & Diversified Financials – 0.4% | Other Banks & Diversified Financials – 0.4% | Other Banks & Diversified Financials – 0.4% |
| Macquarie Group Ltd., 4.442% to 6/21/2032, FLR (SOFR - 1 day + 2.405%) to 6/21/2033 (n) | $&nbsp;&nbsp;&nbsp;148000 | &nbsp;&nbsp;$139455 |
| Pollution Control – 0.6% | Pollution Control – 0.6% | Pollution Control – 0.6% |
| Waste Management, Inc., 4.875%, 2/15/2034 | $&nbsp;&nbsp;&nbsp;179000 | &nbsp;&nbsp;$179787 |
| Real Estate - Office – 0.3% | Real Estate - Office – 0.3% | Real Estate - Office – 0.3% |
| Boston Properties LP, REIT, 5.75%, 1/15/2035 | $&nbsp;&nbsp;&nbsp;105000 | &nbsp;&nbsp;$103553 |
| Retailers – 0.5% | Retailers – 0.5% | Retailers – 0.5% |
| Alimentation Couche-Tard, Inc., 2.95%, 1/25/2030 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;62000 | &nbsp;&nbsp;$57308 |
| Alimentation Couche-Tard, Inc., 3.439%, 5/13/2041 (n) | &nbsp;&nbsp;&nbsp;117000 | &nbsp;&nbsp;&nbsp;&nbsp; **85960** |
|  |  | &nbsp;&nbsp; **$143268** |
| Specialty Stores – 0.3% | Specialty Stores – 0.3% | Specialty Stores – 0.3% |
| Genuine Parts Co., 2.75%, 2/01/2032 | $&nbsp;&nbsp;&nbsp;115000 | &nbsp;&nbsp;$98626 |

---

------

MFS Core Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Telecommunications - Wireless – 1.1% | Telecommunications - Wireless – 1.1% | Telecommunications - Wireless – 1.1% |
| Crown Castle, Inc., REIT, 3.65%, 9/01/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;79000 | &nbsp;&nbsp;$77259 |
| Rogers Communications, Inc., 3.8%, 3/15/2032 | &nbsp;&nbsp;&nbsp;146000 | &nbsp;&nbsp;&nbsp;&nbsp; **133435** |
| T-Mobile USA, Inc., 2.05%, 2/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;69000 | &nbsp;&nbsp;&nbsp;&nbsp; **64884** |
| T-Mobile USA, Inc., 4.5%, 4/15/2050 | &nbsp;&nbsp;&nbsp;&nbsp;83000 | &nbsp;&nbsp;&nbsp;&nbsp; **67334** |
| Vodafone Group PLC, 5.625%, 2/10/2053 | &nbsp;&nbsp;&nbsp;&nbsp;22000 | &nbsp;&nbsp;&nbsp;&nbsp; **20406** |
|  |  | &nbsp;&nbsp; **$363318** |
| Tobacco – 0.9% | Tobacco – 0.9% | Tobacco – 0.9% |
| B.A.T. International Finance PLC, 4.448%, 3/16/2028 | $&nbsp;&nbsp;&nbsp;158000 | &nbsp;&nbsp;$158182 |
| Philip Morris International, Inc., 5.125%, 11/17/2027 | &nbsp;&nbsp;&nbsp;&nbsp;25000 | &nbsp;&nbsp;&nbsp;&nbsp; **25532** |
| Philip Morris International, Inc., 5.625%, 11/17/2029 | &nbsp;&nbsp;&nbsp;&nbsp;11000 | &nbsp;&nbsp;&nbsp;&nbsp; **11529** |
| Philip Morris International, Inc., 5.125%, 2/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;52000 | &nbsp;&nbsp;&nbsp;&nbsp; **53341** |
| Philip Morris International, Inc., 5.75%, 11/17/2032 | &nbsp;&nbsp;&nbsp;&nbsp;48000 | &nbsp;&nbsp;&nbsp;&nbsp; **50356** |
|  |  | &nbsp;&nbsp; **$298940** |
| Transportation - Services – 0.1% | Transportation - Services – 0.1% | Transportation - Services – 0.1% |
| ERAC USA Finance LLC, 7%, 10/15/2037 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;36000 | &nbsp;&nbsp;$41051 |
| U.S. Treasury Obligations – 27.2% | U.S. Treasury Obligations – 27.2% | U.S. Treasury Obligations – 27.2% |
| U.S. Treasury Bonds, 2.375%, 2/15/2042 | $1548000 | &nbsp;&nbsp;$1134938 |
| U.S. Treasury Bonds, 4.375%, 8/15/2043 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **144633** |
| U.S. Treasury Bonds, 4.75%, 11/15/2043 | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp;&nbsp; **101031** |
| U.S. Treasury Bonds, 4.5%, 2/15/2044 | &nbsp;&nbsp;&nbsp;580000 | &nbsp;&nbsp;&nbsp;&nbsp; **566746** |
| U.S. Treasury Bonds, 2.25%, 2/15/2052 (f) | &nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;&nbsp;&nbsp; **556453** |
| U.S. Treasury Bonds, 4%, 11/15/2052 | &nbsp;&nbsp;&nbsp;383000 | &nbsp;&nbsp;&nbsp;&nbsp; **339718** |
| U.S. Treasury Bonds, 4.75%, 11/15/2053 | &nbsp;&nbsp;&nbsp;&nbsp;80000 | &nbsp;&nbsp;&nbsp;&nbsp; **80447** |
| U.S. Treasury Bonds, 4.25%, 2/15/2054 | &nbsp;&nbsp;&nbsp;420000 | &nbsp;&nbsp;&nbsp;&nbsp; **388910** |
| U.S. Treasury Notes, 4%, 1/15/2027 | 1150000 | &nbsp;&nbsp;&nbsp;&nbsp; **1156289** |
| U.S. Treasury Notes, 4.125%, 2/15/2027 | &nbsp;&nbsp;&nbsp;810000 | &nbsp;&nbsp;&nbsp;&nbsp; **816455** |
| U.S. Treasury Notes, 2.5%, 3/31/2027 | &nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp;&nbsp; **832602** |
| U.S. Treasury Notes, 4.5%, 4/15/2027 | 1170000 | &nbsp;&nbsp;&nbsp;&nbsp; **1189332** |
| U.S. Treasury Notes, 4.25%, 6/30/2029 | 1115000 | &nbsp;&nbsp;&nbsp;&nbsp; **1139478** |
| U.S. Treasury Notes, 4.125%, 11/15/2032 | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **201969** |
| U.S. Treasury Notes, 4.25%, 11/15/2034 | &nbsp;&nbsp;&nbsp;&nbsp;60000 | &nbsp;&nbsp;&nbsp;&nbsp; **60459** |
|  |  | &nbsp;&nbsp; **$8709460** |
| Utilities - Electric Power – 1.4% | Utilities - Electric Power – 1.4% | Utilities - Electric Power – 1.4% |
| American Electric Power Co., Inc., 5.95%, 11/01/2032 | $&nbsp;&nbsp;&nbsp;&nbsp;43000 | &nbsp;&nbsp;$44912 |
| Duke Energy Carolinas LLC, 4.95%, 1/15/2033 | &nbsp;&nbsp;&nbsp;118000 | &nbsp;&nbsp;&nbsp;&nbsp; **118683** |
| Duke Energy Progress LLC, 3.45%, 3/15/2029 | &nbsp;&nbsp;&nbsp;118000 | &nbsp;&nbsp;&nbsp;&nbsp; **114476** |
| Pacific Gas & Electric Co., 2.1%, 8/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;82000 | &nbsp;&nbsp;&nbsp;&nbsp; **77223** |
| Pacific Gas & Electric Co., 3%, 6/15/2028 | &nbsp;&nbsp;&nbsp;108000 | &nbsp;&nbsp;&nbsp;&nbsp; **102222** |
|  |  | &nbsp;&nbsp; **$457516** |
| Utilities - Gas – 0.5% | Utilities - Gas – 0.5% | Utilities - Gas – 0.5% |
| East Ohio Gas Co., 2%, 6/15/2030 (n) | $&nbsp;&nbsp;&nbsp;176000 | &nbsp;&nbsp;$154681 |
| **Total Bonds (Identified Cost, $32,114,110)** |  | &nbsp;&nbsp;**$31832116** |

---

------

MFS Core Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Mutual Funds (h) – 4.0% | Mutual Funds (h) – 4.0% | Mutual Funds (h) – 4.0% |
| Money Market Funds – 4.0% | Money Market Funds – 4.0% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) (Identified Cost, $1,287,229) | 1287229 | &nbsp;&nbsp;$1287229 |
| Other Assets, Less Liabilities – (3.2)% |  | &nbsp;&nbsp;&nbsp;&nbsp;(1030046) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | **$32089299** |

---

(f) All or a portion of the security has been segregated as collateral for open futures contracts.

(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values
of the fund's investments in affiliated issuers and in unaffiliated issuers were $1,287,229 and $31,832,116, respectively.

(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to
qualified institutional buyers. At period end, the aggregate value of these securities was $6,596,506, representing 20.6% of net assets.

(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period
end.

---

| | |
|:---|:---|
| The following abbreviations are used in this report and are defined: | The following abbreviations are used in this report and are defined: |
| CLO | &nbsp;&nbsp;Collateralized Loan Obligation |
| CMT | &nbsp;&nbsp;Constant Maturity Treasury |
| FLR | &nbsp;&nbsp;Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate. All reference rates are USD unless otherwise noted. |
| REIT | &nbsp;&nbsp;Real Estate Investment Trust |
| SOFR | &nbsp;&nbsp;Secured Overnight Financing Rate |
| TBA | &nbsp;&nbsp;To Be Announced |
| UMBS | &nbsp;&nbsp;Uniform Mortgage-Backed Security |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** |
| **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** |
| **Description** | &nbsp;&nbsp;&nbsp;&nbsp;**Long/<br> Short** | &nbsp;&nbsp;&nbsp;&nbsp;**Currency** | &nbsp;&nbsp;&nbsp;&nbsp;**Contracts** | &nbsp;&nbsp;&nbsp;&nbsp;**Notional<br> Amount** | &nbsp;&nbsp;&nbsp;&nbsp;**Expiration<br> Date** | &nbsp;&nbsp;&nbsp;&nbsp;**Value/Unrealized<br> Appreciation<br> (Depreciation)** |
| **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Note 2 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;7 | &nbsp;&nbsp;&nbsp;&nbsp;$1457039 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$13510 |
| U.S. Treasury Note 5 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;12 | &nbsp;&nbsp;&nbsp;&nbsp;1310344 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29207 |
|  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;$42717 |
| **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Ultra Bond 30 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$726187 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$(14320) |

---

At April 30, 2025, the fund had liquid securities with an aggregate value of $61,210 to cover any collateral or margin obligations for certain derivative contracts.

#### See Notes to Financial Statements

------

MFS Core Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Assets and Liabilities** |

---

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

---

| | |
|:---|:---|
| **At 4/30/25 <br>Assets** |  |
| Investments in unaffiliated issuers, at value (identified cost, $32,114,110) | &nbsp;&nbsp;$31832116 |
| Investments in affiliated issuers, at value (identified cost, $1,287,229) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1287229 |
| Cash | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7819 |
| Receivables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;214049 |
| &nbsp;&nbsp;&nbsp;&nbsp;TBA sale commitments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;650728 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;413 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest and dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;224902 |
| Receivable from investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26651 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;199 |
| Total assets | &nbsp;&nbsp;$34244106 |
| **Liabilities** |  |
| Payables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$200 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net daily variation margin on open futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2108 |
| &nbsp;&nbsp;&nbsp;&nbsp;TBA purchase commitments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2073709 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1205 |
| Payable to affiliates |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1083 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;118 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76281 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;$2154807 |
| Net assets | &nbsp;&nbsp;$32089299 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp;$33057663 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(968364) |
| Net assets | &nbsp;&nbsp;$32089299 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3334313 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Net assets** | &nbsp;&nbsp;&nbsp;&nbsp;**Shares<br> outstanding** | &nbsp;&nbsp;&nbsp;&nbsp;**Net asset value<br> per share (a)** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;$3416698 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;355210 | &nbsp;&nbsp;&nbsp;&nbsp;$9.62 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;1184695 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;123255 | &nbsp;&nbsp;&nbsp;&nbsp;9.61 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;327561 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34011 | &nbsp;&nbsp;&nbsp;&nbsp;9.63 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;63961 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6647 | &nbsp;&nbsp;&nbsp;&nbsp;9.62 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53922 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5602 | &nbsp;&nbsp;&nbsp;&nbsp;9.62 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78092 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8114 | &nbsp;&nbsp;&nbsp;&nbsp;9.62 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54697 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5683 | &nbsp;&nbsp;&nbsp;&nbsp;9.63 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;26909673 | &nbsp;&nbsp;&nbsp;&nbsp;2795791 | &nbsp;&nbsp;&nbsp;&nbsp;9.63 |

---

(a) Maximum offering price per share was equal to the net asset value per share for all share classes, except for Class A, for which the maximum offering price per
share was $10.05 [100 / 95.75 x $9.62]. On sales of $100,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A and Class C
shares. Redemption price per share was equal to the net asset value per share for Classes I, R1, R2, R3, R4, and R6.

------

MFS Core Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Operations** |

---

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

---

| | |
|:---|:---|
| **Year ended 4/30/25 <br>Net investment income (loss)** |  |
| Income |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest | &nbsp;&nbsp;$1420864 |
| &nbsp;&nbsp;&nbsp;&nbsp;Dividends from affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77077 |
| Total investment income | &nbsp;&nbsp;$1497941 |
| Expenses |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Management fee | &nbsp;&nbsp;&nbsp;&nbsp;$100088 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19706 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7115 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17500 |
| &nbsp;&nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3004 |
| &nbsp;&nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17314 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8179 |
| &nbsp;&nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76123 |
| &nbsp;&nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;804 |
| &nbsp;&nbsp;&nbsp;&nbsp;Registration fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108409 |
| &nbsp;&nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40680 |
| Total expenses | &nbsp;&nbsp;&nbsp;&nbsp;$398922 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fees paid indirectly | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(82) |
| &nbsp;&nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;(275509) |
| Net expenses | &nbsp;&nbsp;&nbsp;&nbsp;$123331 |
| Net investment income (loss) | &nbsp;&nbsp;$1374610 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$28194 |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;151 |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(89291) |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$(60946) |
| Change in unrealized appreciation or depreciation |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;$911632 |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;109042 |
| Net unrealized gain (loss) | &nbsp;&nbsp;$1020674 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$959728 |
| Change in net assets from operations | &nbsp;&nbsp;$2334338 |

---

------

MFS Core Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statements of Changes in Net Assets** |

---

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | |
|:---|:---|:---|
|  | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | &nbsp;&nbsp;$1374610 | &nbsp;&nbsp;&nbsp;&nbsp;$1275657 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(60946) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(308802) |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;1020674 | &nbsp;&nbsp;&nbsp;&nbsp;(1151058) |
| Change in net assets from operations | &nbsp;&nbsp;$2334338 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(184203) |
| Total distributions to shareholders | $(1440208) | &nbsp;&nbsp;&nbsp;&nbsp;$(1342532) |
| Change in net assets from fund share transactions | &nbsp;&nbsp;$1996029 | &nbsp;&nbsp;&nbsp;&nbsp;$3747306 |
| Total change in net assets | &nbsp;&nbsp;$2890159 | &nbsp;&nbsp;&nbsp;&nbsp;$2220571 |
| **Net assets** |  |  |
| At beginning of period | &nbsp;&nbsp;29199140 | &nbsp;&nbsp;&nbsp;&nbsp;26978569 |
| At end of period | $32089299 | &nbsp;&nbsp;&nbsp;$29199140 |

---

------

MFS Core Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Financial Highlights** |

---

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | |
|:---|:---|:---|:---|
| **Class A** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;$9.33 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.32 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.15) |
| Total from investment operations | &nbsp;&nbsp;$0.72 | &nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.43) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.31) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$9.62 | &nbsp;&nbsp;&nbsp;&nbsp;$9.33 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.80 | &nbsp;&nbsp;&nbsp;&nbsp;(1.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.75(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.59(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.85(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | $3417 | &nbsp;&nbsp;&nbsp;$2643 | &nbsp;&nbsp;&nbsp;&nbsp;$947 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

---

| | | | |
|:---|:---|:---|:---|
| **Class C** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;$9.32 | &nbsp;&nbsp;&nbsp;&nbsp;$9.85 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.16) |
| Total from investment operations | &nbsp;&nbsp;$0.65 | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;&nbsp;$0.10 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;$(0.25) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$9.61 | &nbsp;&nbsp;&nbsp;&nbsp;$9.32 | &nbsp;&nbsp;&nbsp;&nbsp;$9.85 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.01 | &nbsp;&nbsp;&nbsp;&nbsp;(1.71) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.06(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;2.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.12(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.12(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | $1185 | &nbsp;&nbsp;&nbsp;$1051 | &nbsp;&nbsp;&nbsp;&nbsp;$391 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Core Bond Fund

Financial Highlights - continued

---

| | | | |
|:---|:---|:---|:---|
| **Class I** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | $9.33 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | $0.43 | &nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;$0.35 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.16) |
| Total from investment operations | $0.75 | &nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.45) | &nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;$(0.33) |
| Net asset value, end of period (x) | $9.63 | &nbsp;&nbsp;&nbsp;&nbsp;$9.33 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.17 | &nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.95(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.36(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.50 | &nbsp;&nbsp;&nbsp;&nbsp;4.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.19(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$328 | &nbsp;&nbsp;&nbsp;&nbsp;$466 | &nbsp;&nbsp;&nbsp;&nbsp;$445 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

---

| | | | |
|:---|:---|:---|:---|
| **Class R1** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | $9.33 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | $0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;(0.15) |
| Total from investment operations | $0.65 | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;&nbsp;$0.10 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.36) | &nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;$(0.24) |
| Net asset value, end of period (x) | $9.62 | &nbsp;&nbsp;&nbsp;&nbsp;$9.33 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.99 | &nbsp;&nbsp;&nbsp;&nbsp;(1.74) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;2.25 | &nbsp;&nbsp;&nbsp;&nbsp;2.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.20(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.49 | &nbsp;&nbsp;&nbsp;&nbsp;3.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.97(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;&nbsp;$64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$51 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Core Bond Fund

Financial Highlights - continued

---

| | | | |
|:---|:---|:---|:---|
| **Class R2** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | $9.34 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | $0.38 | &nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;$0.29 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total from investment operations | $0.69 | &nbsp;&nbsp;&nbsp;$(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.41) | &nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;$(0.29) |
| Net asset value, end of period (x) | $9.62 | &nbsp;&nbsp;&nbsp;&nbsp;$9.34 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.41 | &nbsp;&nbsp;&nbsp;&nbsp;(1.15) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.76 | &nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.86 | &nbsp;&nbsp;&nbsp;&nbsp;0.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.85(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.99 | &nbsp;&nbsp;&nbsp;&nbsp;4.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.47(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;&nbsp;$54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$51 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

---

| | | | |
|:---|:---|:---|:---|
| **Class R3** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | $9.34 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | $0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.31 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.30 | &nbsp;&nbsp;&nbsp;&nbsp;(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total from investment operations | $0.71 | &nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.43) | &nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;$(0.31) |
| Net asset value, end of period (x) | $9.62 | &nbsp;&nbsp;&nbsp;&nbsp;$9.34 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.68 | &nbsp;&nbsp;&nbsp;&nbsp;(0.90) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.74(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;1.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.62 | &nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.23 | &nbsp;&nbsp;&nbsp;&nbsp;4.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.71(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;&nbsp;$78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$51 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Core Bond Fund

Financial Highlights - continued

---

| | | | |
|:---|:---|:---|:---|
| **Class R4** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | $9.34 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | $0.43 | &nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;$0.33 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total from investment operations | $0.74 | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | $(0.45) | &nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;$(0.33) |
| Net asset value, end of period (x) | $9.63 | &nbsp;&nbsp;&nbsp;&nbsp;$9.34 | &nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;8.06 | &nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.95(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.20(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.49 | &nbsp;&nbsp;&nbsp;&nbsp;4.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.96(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;&nbsp;$55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$51 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

---

| | | | |
|:---|:---|:---|:---|
| **Class R6** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23(c)** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.86 | &nbsp;&nbsp;&nbsp;&nbsp;$10.00 |
| **Income (loss) from investment operations** |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.15) |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.75 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.19 |
| **Less distributions declared to shareholders** |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.33) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.86 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.62) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.97(n) |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.18(a) |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33(a) |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;4.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.99(a) |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;139 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129(n) |
| Net assets at end of period (000 omitted) | $26910 | &nbsp;&nbsp;&nbsp;$24828 | &nbsp;&nbsp;&nbsp;$24992 |
| **Supplemental Ratios (%):** |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Core Bond Fund

Financial Highlights - continued

**(a)** **Annualized.** 

**(c)** **For the period from the commencement of the fund's investment operations, June 22, 2022, through the stated period end.** 

**(d)** **Per share data is based on average shares outstanding.** 

**(e)** **Portfolio turnover rate (excluding TBA transactions) is disclosed beginning with the period ending April 30, 2024. Refer to Note 2 for more information on TBA transactions and mortgage dollar rolls.** 

**(f)** **Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note 2 in the Notes to Financial Statements for additional information.** 

**(n)** **Not annualized.** 

**(r)** **Certain expenses have been reduced without which performance would have been lower.** 

**(s)** **From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.** 

**(t)** **Total returns do not include any applicable sales charges.** 

**(x)** **The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.** 

------

MFS Core Bond Fund

### Notes to Financial Statements
(1) Business and Organization

MFS Core Bond Fund (the fund) is a diversified series of MFS Series Trust XII (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company.

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

(2) Significant Accounting Policies

**General — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund's Statement of Assets and Liabilities through the date that the financial statements were issued.**

In this reporting period, the fund adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect the fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. The fund represents a single operating segment and the Chairman's Committee of the fund's adviser acts as the segment's CODM. The fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within the fund's financial statements.

**Balance Sheet Offsetting — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.**

**Investment Valuations — Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.**

Under the fund's valuation policy and procedures, debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data.

------

MFS Core Bond Fund

Notes to Financial Statements - continued

Pricing services generally value debt instruments assuming orderly transactions of institutional round lot sizes, but a fund may hold or transact in such securities in smaller, odd lot sizes. In instances where a fund holds an odd lot size position in a debt instrument, such position will typically be valued using the pricing agent's institutional round lot price for the debt instrument. Odd lots may trade at lower prices than institutional round lots, and the fund may receive different prices when it sells odd lot positions than it would receive for sales of institutional round lot positions. An investment may also be valued at fair value if the adviser determines that the investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments, such as futures contracts. The following is a summary of the levels used as of April 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| U.S. Treasury Bonds & U.S. Government Agencies & Equivalents | $— | &nbsp;&nbsp;$8709460 | $— | &nbsp;&nbsp;$8709460 |
| Municipal Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;181923 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;181923 |
| U.S. Corporate Bonds |  | &nbsp;&nbsp;&nbsp;7227939 |  | &nbsp;&nbsp;&nbsp;7227939 |
| Residential Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;8691118 |  | &nbsp;&nbsp;&nbsp;8691118 |
| Commercial Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;949727 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;949727 |
| Asset-Backed Securities (including CDOs) |  | &nbsp;&nbsp;&nbsp;3240874 |  | &nbsp;&nbsp;&nbsp;3240874 |
| Foreign Bonds |  | &nbsp;&nbsp;&nbsp;2831075 |  | &nbsp;&nbsp;&nbsp;2831075 |
| Investment Companies | &nbsp;&nbsp;1287229 |  |  | &nbsp;&nbsp;&nbsp;1287229 |
| Total | $1287229 | $31832116 | $— | $33119345 |

---

---

| | | | |
|:---|:---|:---|:---|
| **Other Financial Instruments** |  |  |  |
| Futures Contracts – Assets | $42717 | $— | $42717 |
| Futures Contracts – Liabilities | (14320) |  | (14320) |

---

For further information regarding security characteristics, see the Portfolio of Investments.

**Derivatives — The fund uses derivatives primarily to increase or decrease exposure to a particular market or segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. Derivatives are used for hedging or non-hedging purposes. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. When the fund uses derivatives as an investment to increase market exposure, or for hedging purposes, gains and losses from derivative instruments may be substantially greater than the derivative's original cost.**

The derivative instruments used by the fund during the period were futures contracts. Depending on the type of derivative, a fund may exit a derivative position by entering into an offsetting transaction with a counterparty or exchange, negotiating an agreement with the derivative counterparty, or novating the position to a third party. The fund may be unable to promptly close out a futures position in instances where the daily fluctuation in the price for that type of future exceeds the daily limit set by the exchange. The fund's period end derivatives, as presented in the Portfolio of Investments and the associated Derivative Contract tables, generally are indicative of the volume of its derivative activity during the period.

The following table presents, by major type of derivative contract, the fair value, on a gross basis, of the asset and liability components of derivatives held by the fund at April 30, 2025 as reported in the Statement of Assets and Liabilities:

------

MFS Core Bond Fund

Notes to Financial Statements - continued

---

| | | | |
|:---|:---|:---|:---|
|  |  | &nbsp;&nbsp;**Fair Value (a)** | &nbsp;&nbsp;**Fair Value (a)** |
| **Risk** | **Derivative Contracts** | &nbsp;&nbsp;**Asset Derivatives** | &nbsp;&nbsp;**Liability Derivatives** |
| Interest Rate | Futures Contracts | &nbsp;&nbsp;$42717 | &nbsp;&nbsp;$(14320) |

---

(a) Values presented in this table for futures contracts correspond to the values reported in the Portfolio of Investments. Only the current day net variation margin for futures contracts is reported separately within the Statement of Assets and Liabilities.

The following table presents, by major type of derivative contract, the realized gain (loss) on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures<br> Contracts** |
| Interest Rate | $(89291) |

---

The following table presents, by major type of derivative contract, the change in unrealized appreciation or depreciation on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures<br> Contracts** |
| Interest Rate | $109042 |

---

Derivative counterparty credit risk is managed through formal evaluation of the creditworthiness of all potential counterparties. On certain, but not all, uncleared derivatives, the fund attempts to reduce its exposure to counterparty credit risk whenever possible by entering into an ISDA Master Agreement on a bilateral basis. The ISDA Master Agreement gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a specified deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each agreement to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the ISDA Master Agreement could result in a reduction of the fund's credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

Collateral and margin requirements differ by type of derivative. For cleared derivatives (e.g., futures contracts, cleared swaps, and exchange-traded options), margin requirements are set by the clearing broker and the clearing house and collateral, in the form of cash or securities, is posted by the fund directly with the clearing broker. Collateral terms are counterparty agreement specific for uncleared derivatives (e.g., forward foreign currency exchange contracts, uncleared swap agreements, and uncleared options). Collateral, in the form of cash and securities, is held in segregated accounts with the fund's custodian in connection with these agreements. For derivatives traded under an ISDA Master Agreement, which contains a credit support annex, the collateral requirements are netted across all transactions traded under such counterparty-specific agreement and an amount is posted from one party to the other to collateralize such obligations. Cash that has been segregated or delivered to cover the fund's collateral or margin obligations under derivative contracts, if any, will be reported separately in the Statement of Assets and Liabilities as restricted cash for uncleared derivatives and/or deposits with brokers for cleared derivatives. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments. The fund may be required to make payments of interest on uncovered collateral or margin obligations with the broker. Any such payments are included in "Miscellaneous" expense in the Statement of Operations.

**Futures Contracts — The fund entered into futures contracts which may be used to hedge against or obtain broad market exposure, interest rate exposure, currency exposure, or to manage duration. A futures contract represents a commitment for the future purchase or sale of an asset at a specified price on a specified date.**

Upon entering into a futures contract, the fund is required to deposit with the broker, either in cash or securities, an initial margin in an amount equal to a specified percentage of the notional amount of the contract. Subsequent payments (variation margin) are made or received by the fund each day, depending on the daily fluctuations in the value of the contract, and are recorded for financial statement purposes as unrealized gain or loss by the fund until the contract is closed or expires at which point the gain or loss on futures contracts is realized.

The fund bears the risk of interest rates, exchange rates or securities prices moving unexpectedly, in which case, the fund may not achieve the anticipated benefits of the futures contracts and may realize a loss. While futures contracts may present less counterparty risk to the fund since the contracts are exchange traded and the exchange's clearinghouse guarantees payments to the broker, there is still counterparty credit risk due to the insolvency of the broker. The fund's maximum risk of loss due to counterparty credit risk is equal to the margin posted by the fund to the broker plus any gains or minus any losses on the outstanding futures contracts.

------

MFS Core Bond Fund

Notes to Financial Statements - continued

**Mortgage-Backed/Asset-Backed Securities — The fund invests a significant portion of its assets in asset-backed and/or mortgage-backed securities. For these securities, the value of the debt instrument also depends on the credit quality and adequacy of the underlying assets or collateral as well as whether there is a security interest in the underlying assets or collateral. Enforcing rights, if any, against the underlying assets or collateral may be difficult. U.S. Government securities not supported as to the payment of principal or interest by the U.S. Treasury, such as those issued by Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are subject to greater credit risk than are U.S. Government securities supported by the U.S. Treasury, such as those issued by Ginnie Mae.**

**Indemnifications — Under the fund's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the fund. Additionally, in the normal course of business, the fund enters into agreements with service providers that may contain indemnification clauses. The fund's maximum exposure under these agreements is unknown as this would involve future claims that may be made against the fund that have not yet occurred.**

**Investment Transactions and Income — Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Interest payments received in additional securities are recorded on the ex-interest date in an amount equal to the value of the security on such date.**

The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.

Investment transactions are recorded on the trade date. In determining the net gain or loss on securities sold, the cost of securities is determined on the identified cost basis.

The fund may purchase or sell mortgage-backed securities on a "To Be Announced" (TBA) basis. A TBA transaction is subject to extended settlement and typically does not designate the actual security to be delivered, but instead includes an approximate principal amount. The price of the TBA security and the date that it will be settled are fixed at the time the transaction is negotiated. The value of the security varies with market fluctuations and no interest accrues to the fund until settlement takes place. TBA purchase and sale commitments are held at carrying amount, which approximates fair value and are categorized as level 2 within the fair value hierarchy and included in TBA purchase and TBA sale commitments in the Statement of Assets and Liabilities, as applicable. Losses may arise as a result of changes in the value of the TBA investment prior to settlement date or due to counterparty non-performance.

The fund may also enter into mortgage dollar rolls, typically TBA dollar rolls, in which the fund sells TBA mortgage-backed securities to financial institutions and simultaneously agrees to repurchase similar (same issuer, type and coupon) securities at a later date at an agreed-upon price. During the period between the sale and repurchase, the fund will not be entitled to receive interest and principal payments on the securities sold. The fund accounts for dollar roll transactions as purchases and sales and realizes gains and losses on these transactions. As such, these transactions may result in an increase to the fund's portfolio turnover rate. Portfolio turnover rates including and excluding TBA transactions are presented in the Financial Highlights. Dollar roll transactions involve the risk that the market value of the securities that the fund is required to purchase may decline below the agreed upon repurchase price of those securities.

To mitigate the counterparty credit risk on TBA transactions, mortgage dollar rolls, and other types of forward settling mortgage-backed and asset-backed security transactions, the fund whenever possible enters into a Master Securities Forward Transaction Agreement ("MSFTA") on a bilateral basis with each of the counterparties with whom it undertakes a significant volume of transactions. The MSFTA gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a specified deterioration in the credit quality of the other party. Upon an event of default or a termination of the MSFTA, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each transaction to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the MSFTA could result in a reduction of the fund's credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

For mortgage-backed and asset-backed securities traded under a MSFTA, the collateral and margining requirements are contract specific. Collateral amounts across all transactions traded under such agreement are netted and an amount is posted from one party to the other to collateralize such obligations. Cash that has been pledged to cover the fund's collateral or margin obligations under a MSFTA, if any, will be reported separately on the Statement of Assets and Liabilities as restricted cash. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments.

**Fees Paid Indirectly — The fund's custody fee may be reduced by a credit earned under an arrangement that measures the value of U.S. dollars deposited with the custodian by the fund. The amount of the credit, for the year ended April 30, 2025, is shown as a reduction of total expenses in the Statement of Operations.**

------

MFS Core Bond Fund

Notes to Financial Statements - continued

**Tax Matters and Distributions — The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.**

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

Book/tax differences primarily relate to derivative transactions.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$1440208 | &nbsp;&nbsp;&nbsp;$1342532 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | |
|:---|:---|
| **As of 4/30/25** |  |
| Cost of investments | &nbsp;&nbsp;&nbsp;$33426663 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;298109 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(577030) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(278921) |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;168457 |
| Capital loss carryforwards | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(737910) |
| Other temporary differences | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(119990) |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(968364) |

---

As of April 30, 2025, the fund had capital loss carryforwards available to offset future realized gains. These net capital losses may be carried forward indefinitely and their character is retained as short-term and/or long-term losses. Such losses are characterized as follows:

---

| | |
|:---|:---|
| Short-Term | $(265374) |
| Long-Term | &nbsp;&nbsp;(472536) |
| Total | $(737910) |

---

**Multiple Classes of Shares of Beneficial Interest — The fund offers multiple classes of shares, which differ in their respective distribution and service fees. The fund's income and common expenses are allocated to shareholders based on the value of settled shares outstanding of each class. The fund's realized and unrealized gain (loss) are allocated to shareholders based on the daily net assets of each class. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class C shares will convert to Class A shares approximately eight years after purchase. The fund's distributions declared to shareholders as reported in the Statements of Changes in Net Assets are presented by class as follows:**

------

MFS Core Bond Fund

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **Year<br> ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year<br> ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$134260 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$91006 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;41571 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32793 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;13027 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21782 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2325 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2239 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2218 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2140 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3029 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2273 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2511 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2408 |
| Class R6 | &nbsp;&nbsp;1241267 | &nbsp;&nbsp;&nbsp;&nbsp;1187891 |
| Total | $1440208 | &nbsp;&nbsp;&nbsp;$1342532 |

---

(3) Transactions with Affiliates

**Investment Adviser — The fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. The management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets:**

---

| | |
|:---|:---|
| Up to $1 billion | 0.325% |
| In excess of $1 billion and up to $2.5 billion | &nbsp;&nbsp;0.31% |
| In excess of $2.5 billion | &nbsp;&nbsp;0.30% |

---

MFS has agreed in writing to reduce its management fee by a specified amount if certain MFS mutual fund assets exceed thresholds agreed to by MFS and the fund's Board of Trustees. MFS has also agreed in writing to waive at least 0.01% of its management fee as part of this agreement. The agreement to waive at least 0.01% of the management fee will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2026. For the year ended April 30, 2025, this management fee reduction amounted to $4,161, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.31% of the fund's average daily net assets.

The investment adviser has agreed in writing to pay a portion of the fund's total annual operating expenses, excluding interest, taxes, extraordinary expenses, brokerage and transaction costs, certain tax reclaim recovery expenses (including contingency fees and closing agreement expenses), and investment-related expenses, such that total fund operating expenses do not exceed the following rates annually of each class's average daily net assets:

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Classes** | **Classes** | **Classes** | **Classes** | **Classes** | **Classes** | **Classes** | **Classes** |
| **A** | &nbsp;&nbsp;&nbsp;**C** | &nbsp;&nbsp;&nbsp;**I** | &nbsp;&nbsp;&nbsp;**R1** | &nbsp;&nbsp;&nbsp;**R2** | &nbsp;&nbsp;&nbsp;**R3** | &nbsp;&nbsp;&nbsp;**R4** | &nbsp;&nbsp;&nbsp;**R6** |
| 0.64% | &nbsp;&nbsp;&nbsp;1.39% | &nbsp;&nbsp;&nbsp;0.39% | &nbsp;&nbsp;&nbsp;1.39% | &nbsp;&nbsp;&nbsp;0.89% | &nbsp;&nbsp;&nbsp;0.64% | &nbsp;&nbsp;&nbsp;0.39% | &nbsp;&nbsp;&nbsp;0.33% |

---

This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2025. For the year ended April 30, 2025, this reduction amounted to $271,348, which is included in the reduction of total expenses in the Statement of Operations.

**Distributor — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received $164 for the year ended April 30, 2025, as its portion of the initial sales charge on sales of Class A shares of the fund.**

The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.

The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. The distribution and service fees are computed daily and paid monthly.

------

MFS Core Bond Fund

Notes to Financial Statements - continued

#### Distribution Plan Fee Table:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.25% | $7491 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;11157 |
| Class R1 | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;628 |
| Class R2 | 0.25% | 0.25% | 0.50% | 0.50% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;263 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.25% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;167 |
| Total Distribution and Service Fees |  |  |  |  | $19706 |

---

(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each class's average daily
net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended April 30, 2025 based on each class's average daily net assets. MFD has
voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on the account except for accounts attributable to MFS or its
affiliates' seed money. There were no service fee rebates for the year ended April 30, 2025.

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended April 30, 2025, were as follows:

---

| | |
|:---|:---|
|  | **Amount** |
| Class A | $11 |
| Class C | &nbsp;&nbsp;23 |

---

**Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended April 30, 2025, the fee was $3,357, which equated to 0.0109% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended April 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $3,758.**

**Administrator — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.0567% of the fund's average daily net assets.**

**Trustees' and Officers' Compensation — The fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. Independent Trustees' compensation is accrued daily and paid subsequent to each Trustee Board meeting. The fund does not pay compensation directly to Trustees or officers of the fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to the fund. Certain officers and Trustees of the fund are officers or directors of MFS, MFD, and MFSC.**

**Other — The fund invests in the MFS Institutional Money Market Portfolio which is managed by MFS and seeks current income consistent with preservation of capital and liquidity. This money market fund does not pay a management fee to MFS but does incur investment and operating costs.**

At April 30, 2025, MFS held approximately 70% and 100% of the outstanding shares of Class R3 and Class R6, and 100% of the outstanding shares of Class R1, Class R2, and Class R4.

MFS purchases or redeemed fund shares on the dates indicated:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Date** | **Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| 6/23/2023 | Purchase | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;1044 | &nbsp;&nbsp;$10154 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;21820 | &nbsp;&nbsp;214710 |

---

------

MFS Core Bond Fund

Notes to Financial Statements - continued

(4) Portfolio Securities

For the year ended April 30, 2025, purchases and sales of investments, other than short-term obligations, were as follows:

---

| | | |
|:---|:---|:---|
|  | **Purchases** | &nbsp;&nbsp;**Sales** |
| U.S. Government securities | $40665045 | &nbsp;&nbsp;$39538076 |
| Non-U.S. Government securities | &nbsp;&nbsp;&nbsp;3468999 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2724544 |

---

(5) Shares of Beneficial Interest

The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 179547 | &nbsp;&nbsp;&nbsp;$1734477 | &nbsp;&nbsp;209006 | &nbsp;&nbsp;$1999742 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;23433 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;225289 | &nbsp;&nbsp;&nbsp;73439 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;700325 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;26215 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;254510 | &nbsp;&nbsp;&nbsp;&nbsp;2730 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25554 |
| &nbsp;&nbsp;&nbsp;Class R1 |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;1044 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10154 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;2406 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23891 | &nbsp;&nbsp;— | &nbsp;&nbsp;— |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;8832 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;85375 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;187 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1795 |
|  | 240433 | &nbsp;&nbsp;&nbsp;$2323542 | &nbsp;&nbsp;286406 | &nbsp;&nbsp;$2737570 |
| Shares issued to shareholders<br> in reinvestment of distributions |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;13852 | &nbsp;&nbsp;&nbsp;&nbsp;$133375 | &nbsp;&nbsp;&nbsp;&nbsp;9558 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$91006 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;4222 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40627 | &nbsp;&nbsp;&nbsp;&nbsp;3424 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32682 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;1357 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13027 | &nbsp;&nbsp;&nbsp;&nbsp;2282 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21782 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2325 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;235 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2239 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;230 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2218 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;224 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2140 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;314 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3029 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2273 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;261 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2511 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;252 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2408 |
| &nbsp;&nbsp;&nbsp;Class R6 | 128777 | &nbsp;&nbsp;&nbsp;&nbsp;1241267 | &nbsp;&nbsp;124415 | &nbsp;&nbsp;&nbsp;&nbsp;1187891 |
|  | 149254 | &nbsp;&nbsp;&nbsp;$1438379 | &nbsp;&nbsp;140628 | &nbsp;&nbsp;$1342421 |
| Shares reacquired |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (121393) | &nbsp;&nbsp;$(1170436) | &nbsp;&nbsp;(31432) | &nbsp;&nbsp;&nbsp;&nbsp;$(293498) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;(17158) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(165549) | &nbsp;&nbsp;&nbsp;&nbsp;(3822) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(36404) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;(43462) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(418702) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(292) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2783) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(26) | &nbsp;&nbsp;— | &nbsp;&nbsp;— |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;(1169) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11179) | &nbsp;&nbsp;— | &nbsp;&nbsp;— |
|  | (183185) | &nbsp;&nbsp;$(1765892) | &nbsp;&nbsp;(35546) | &nbsp;&nbsp;&nbsp;&nbsp;$(332685) |
| Net change |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;72006 | &nbsp;&nbsp;&nbsp;&nbsp;$697416 | &nbsp;&nbsp;187132 | &nbsp;&nbsp;$1797250 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;10497 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100367 | &nbsp;&nbsp;&nbsp;73041 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;696603 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;(15890) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(151165) | &nbsp;&nbsp;&nbsp;&nbsp;4720 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44553 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2325 | &nbsp;&nbsp;&nbsp;&nbsp;1279 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12393 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;230 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2218 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;224 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2140 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;2717 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26894 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;238 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2273 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;261 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2511 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;252 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2408 |
| &nbsp;&nbsp;&nbsp;Class R6 | 136440 | &nbsp;&nbsp;&nbsp;&nbsp;1315463 | &nbsp;&nbsp;124602 | &nbsp;&nbsp;&nbsp;&nbsp;1189686 |
|  | 206502 | &nbsp;&nbsp;&nbsp;$1996029 | &nbsp;&nbsp;391488 | &nbsp;&nbsp;$3747306 |

---

------

MFS Core Bond Fund

Notes to Financial Statements - continued

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended April 30, 2025, the fund's commitment fee and interest expense were $172 and $0, respectively, and are included in "Miscellaneous" expense in the Statement of Operations.

(7) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the year ended April 30, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$2083506 | &nbsp;&nbsp;&nbsp;$9147632 | &nbsp;&nbsp;&nbsp;$9944060 | &nbsp;&nbsp;&nbsp;$151 | &nbsp;&nbsp;&nbsp;$— | &nbsp;&nbsp;&nbsp;$1287229 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$77077 | &nbsp;&nbsp;&nbsp;$— |

---

------

MFS Core Bond Fund

### Report of Independent Registered Public Accounting Firm
To the Shareholders of MFS Core Bond Fund and the Board of Trustees of MFS Series Trust XII

#### Opinion on the Financial Statements
We have audited the accompanying statement of assets and liabilities of MFS Core Bond Fund (the "Fund") (one of the funds constituting MFS Series Trust XII (the "Trust")), including the portfolio of investments, as of April 30, 2025, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the two years in the period then ended and the period from June 22, 2022 (commencement of operations) through April 30, 2023 and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund (one of the funds constituting MFS Series Trust XII) at April 30, 2025, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended and its financial highlights for each of the two years in the period then ended and the period from June 22, 2022 (commencement of operations) through April 30, 2023, in conformity with U.S. generally accepted accounting principles.

#### Basis for Opinion
These financial statements are the responsibility of the Trust's management. Our responsibility is to express an opinion on the Fund's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Trust in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were we engaged to perform, an audit of the Trust's internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as of April 30, 2025, by correspondence with the custodian, brokers and others; when replies were not received from brokers and others, we performed other auditing procedures. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ Ernst & Young LLP

We have served as the auditor of one or more MFS investment companies since 1993.

Boston, Massachusetts

June 13, 2025

------

MFS Core Bond Fund

### Results of Shareholder Meeting (unaudited)
At a special meeting of shareholders of MFS Series Trust XII, which was held on November 14, 2024, the following action was taken:

#### Item 1: To elect the following individuals as Trustees, effective January 1, 2025:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Number of Dollars** | &nbsp;&nbsp;&nbsp;**Number of Dollars** |
| **Nominee** | &nbsp;&nbsp;&nbsp;**For** | &nbsp;&nbsp;&nbsp;**Against/Withheld** |
| Steven E. Buller | &nbsp;&nbsp;&nbsp;2560251800.049 | &nbsp;&nbsp;&nbsp;50047454.697 |
| John A. Caroselli | &nbsp;&nbsp;&nbsp;2550653388.160 | &nbsp;&nbsp;&nbsp;59645866.376 |
| Maureen R. Goldfarb | &nbsp;&nbsp;&nbsp;2545243569.344 | &nbsp;&nbsp;&nbsp;65055685.210 |
| Peter D. Jones | &nbsp;&nbsp;&nbsp;2551269018.791 | &nbsp;&nbsp;&nbsp;59030235.745 |
| John P. Kavanaugh | &nbsp;&nbsp;&nbsp;2550561372.721 | &nbsp;&nbsp;&nbsp;59737881.814 |
| James W. Kilman, Jr. | &nbsp;&nbsp;&nbsp;2550172878.682 | &nbsp;&nbsp;&nbsp;60126375.853 |
| Clarence Otis, Jr. | &nbsp;&nbsp;&nbsp;2551247004.181 | &nbsp;&nbsp;&nbsp;59052250.354 |
| Michael W. Roberge | &nbsp;&nbsp;&nbsp;2550009104.740 | &nbsp;&nbsp;&nbsp;60290149.795 |
| Maryanne L. Roepke | &nbsp;&nbsp;&nbsp;2545419366.917 | &nbsp;&nbsp;&nbsp;64879887.637 |
| Paula E. Smith | &nbsp;&nbsp;&nbsp;2534933959.058 | &nbsp;&nbsp;&nbsp;75365295.496 |
| Laurie J. Thomsen | &nbsp;&nbsp;&nbsp;2544782084.655 | &nbsp;&nbsp;&nbsp;65517169.899 |
| Darrell A. Williams | &nbsp;&nbsp;&nbsp;2540912957.455 | &nbsp;&nbsp;&nbsp;69386297.081 |

---

------

MFS Core Bond Fund

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

The fund intends to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

------

#### ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
There is nothing to report for this item for MFS Core Bond Fund.

#### ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Core Bond Fund.

#### ITEM 10. REMUNERATION PAID TO DIRECTORS, OFFICERS, AND OTHERS OF OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Core Bond Fund. See the Statement of Operations and Note 3 within the Notes to Financial Statements for more information.

#### ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.
Not Applicable.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 12. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 13. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 14. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 15. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant's Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 407 (c)(2)(iv) of Regulation S-K or this Item.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 16. CONTROLS AND PROCEDURES.
* Based upon their evaluation of the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act")) as conducted within 90 days of the filing date of this report on Form N-CSR, the Registrant's principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the Registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. 

* There were no changes in the Registrant's internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the period covered by the report that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting. 

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 17. DISCLOSURE OF SECURITIES LENDING ACTIVITIES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 18. RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION.
Not applicable to the Registrant.

------

#### ITEM 19. EXHIBITS.
* Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit: Attached hereto as [EX-99.COE](Code_of_Ethics.htm).

* Any policy required by the listing standards adopted pursuant to Rule 10D-1 under the Exchange Act (17 CFR 240.10D-1) by the registered national securities exchange or registered national securities association upon which the registrant's securities are listed. Not applicable.

* A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto as [EX-99.302CERT](99.302CERT.htm).

* Any written solicitation to purchase securities under Rule 23c-1 under the Act (17 CFR 270.23c-1) sent or given during the period covered by the report by or on behalf of the registrant to 10 or more persons. Not applicable.

* Change in the registrant's independent public accountant. Not applicable.

* If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed "filed" for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference. Attached hereto as [EX-99.906CERT](99.906CERT.htm).

------

#### Notice
A copy of the Declaration of Trust, as amended, of the Registrant is on file with the Secretary of State of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant) MFS SERIES TRUST XII

By (Signature and Title)\*

/S/ DAVID L. DILORENZO

David L. DiLorenzo, President

Date: June 13, 2025

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)\*

/S/ DAVID L. DILORENZO

David L. DiLorenzo, President (Principal Executive Officer)

Date: June 13, 2025

By (Signature and Title)\*

/S/ KASEY L. PHILLIPS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Kasey L. Phillips, Treasurer (Principal Financial Officer and Accounting Officer)

Date: June 13, 2025

\* Print name and title of each signing officer under his or her signature.

------

## Ex-99.Code

![Image is missing](gli3kdn2o6fuq5fi96vle.jpg)

<u>EX-99.COE</u>

**Code of Ethics for Principal Executive and Principal Financial Officers**

**Effective April 1, 2024**

**Policy Purpose and Summary**

Section 406 of the Sarbanes-Oxley Act requires that each MFS Fund registered under the Investment Company Act of 1940 disclose whether or not it has adopted a code of ethics for senior financial officers, applicable to its principal financial officer and principal accounting officer.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**I.Overview**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A. Covered Officers/Purpose of the Code

This code of ethics (this "Code") has been adopted by the funds (collectively, "Funds" and each, "Fund") under supervision of the MFS Funds Board (the "Board") and applies to the Funds' Principal Executive Officer and Principal Financial Officer (the "Covered Officers" each of whom is set forth in Exhibit A) for the purpose of promoting:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•full, fair, accurate, timely and understandable disclosure in reports and documents that the Funds file with, or submit to, the Securities and Exchange Commission ("SEC") and in other public communications made by the Funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•compliance by the Funds with applicable laws and governmental rules and regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the prompt internal reporting of violations of the Code to an appropriate person or persons identified in the Code; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•accountability for adherence to the Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B. Conduct Guidelines

Each Covered Officer should adhere to a high standard of business ethics and should be sensitive to situations that may give rise to actual as well as apparent conflicts of interest. In addition, each Covered Officer should not place his or her personal interests ahead of the Funds' interests and should endeavor to act honestly and ethically. In furtherance of the foregoing, each Covered Officer must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not use his or her personal influence or personal relationships improperly to influence investment decisions or financial reporting for any Fund whereby the Covered Officer would benefit personally to the detriment of the Fund; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not cause a Fund to take action, or fail to take action, for the individual personal benefit of the Covered Officer rather than the benefit of the Fund.

The following activities, which could create the appearance of a conflict of interest, are permitted only with the approval of the Funds' Chief Legal Officer ("CLO"):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•service as a director on the board of any "for profit" company other than the board of the Funds' investment adviser or its subsidiaries or board of a pooled investment vehicle sponsored by the Funds' investment adviser or its subsidiaries;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•running for political office;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the receipt of any Fund business-related gift or any entertainment from any company with which a Fund has current or prospective business dealings unless such gift or entertainment is permitted by the gifts and entertainment policy of the Funds' investment adviser;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•any material ownership interest in, or any consulting or employment relationship with, any Fund service providers (e.g., custodian banks, audit firms), other than the Funds' investment adviser, principal underwriter, administrator or any affiliated person thereof;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•a direct or indirect financial interest in commissions, transaction charges or spreads paid by a Fund for effecting portfolio transactions or for selling or redeeming shares, other than an interest arising from the Covered Officer's employment or securities ownership.

**C.Disclosure and Compliance**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Each Covered Officer should familiarize himself or herself with the disclosure requirements generally applicable to the Funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•each Covered Officer should not knowingly misrepresent, or cause others to misrepresent, facts about a Fund to others, whether within or outside the Fund, including to the Fund's trustees and auditors, and to governmental regulators and self-regulatory organizations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•each Covered Officer should, to the extent appropriate within his or her area of Fund responsibility, consult with other officers and employees of the Funds and the adviser with the goal of promoting full, fair, accurate, timely and understandable disclosure in the reports and documents the Funds file with, or submit to, the SEC and in other public communications made by the Funds; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•it is the responsibility of each Covered Officer to promote compliance within his or her area of Fund responsibility with the standards and restrictions imposed by applicable laws, rules and regulations.

**D.Reporting and Accountability**

Each Covered Officer must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•upon adoption of the Code (or thereafter as applicable, upon becoming a Covered Officer), affirm in writing to the Board that he or she has received, read, and understands the Code;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•annually thereafter affirm to the Board that he or she has complied with the requirements of the Code;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•annually report to the CLO affiliations and relationships which are or may raise the appearance of a conflict of interest with the Covered Officer's duties to the Funds, as identified in the annual Trustee and Officer Questionnaire;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not retaliate against any other Covered Officer or any officer or employee of the Funds or their affiliated persons for reports of potential violations that are made in good faith; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•notify the CLO promptly if he or she knows of any violation of this Code. Failure to do so is itself a violation of this Code.

The CLO is responsible for applying this Code to specific situations in which questions are presented under it, granting waivers upon consultation with the Board or its designee, investigating violations, and has the authority to interpret this Code in any particular situation. The CLO will report requests for waivers to the Board (or a designee thereof) promptly upon receipt of a waiver request and will periodically report to the Board any approvals granted since the last report.

The CLO will take all appropriate action to investigate any potential violations reported to him or her and to report any violations to the Board. If the Board concurs that a violation has occurred, it will consider appropriate action, which may include review of, and appropriate modifications to, applicable policies and procedures; notification to appropriate personnel of the investment adviser or its board; or a recommendation to dismiss the Covered Officer.

Any changes to or waivers of this Code will, to the extent required, be disclosed as provided by SEC rules.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E. Confidentiality

All reports and records prepared or maintained pursuant to this Code and under the direction of the CLO will be considered confidential and shall be maintained and protected accordingly. Except as otherwise required by law or this Code, such matters shall not be disclosed to anyone other than the Funds' Board, its counsel, counsel to the Board's independent trustees and senior management and the board of directors of the Fund's investment adviser and its counsel.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;F. Internal Use

The Code is intended solely for the internal use by the Funds and does not constitute an admission, by or on behalf of any Fund, as to any fact, circumstance, or legal conclusion.

**II.Supervision**

The Board of Trustees of the Funds, including a majority of the Trustees who are not "interested persons" (as defined in the 1940 Act) of the Funds, shall review no less frequently than annually, a report from the CLO regarding the affirmations of the principal executive officer and the principal financial officer as to compliance with this Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**III.Interpretation and Escalation**

Breaches of the Code are reviewed by the CLO and communicated to the Board of Trustees of the affected Fund(s). Interpretations of this Policy shall be made from time to time by the CLO, as needed, and questions regarding the application of this Policy to a specific set of facts are escalated to the CLO.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IV. Authority

Section 406 of the Sarbanes-Oxley Act.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**V.Monitoring**

Adherence to this policy is monitored by the CLO.

---

| | |
|:---|:---|
| VI. | **Related Policies** |
|  | This Code shall be the sole code of ethics adopted by the Funds for purposes of |
|  | Section 406 of the Sarbanes-Oxley Act and the rules and forms applicable to |
|  | registered investment companies thereunder. Insofar as other policies or procedures |
|  | of the Funds, the Funds' adviser, principal underwriter, or other service providers |
|  | govern or purport to govern the behavior or activities of the Covered Officers who |
|  | are subject to this Code, they are superseded by this Code to the extent that they |
|  | overlap or conflict with the provisions of this Code. The Funds' and their investment |
|  | adviser's codes of ethics under Rule 17j-1 under the Investment Company Act and |
|  | any other codes or policies or procedures adopted by the Funds or their investment |
|  | adviser or other service providers are separate requirements and are not part of this |
|  | Code. |
| VII. | **Amendment** |
|  | Any amendments to this Code, other than amendments to Exhibit A, must be |
|  | approved or ratified by a majority vote of the Board, including a majority of |
|  | independent trustees. |
| VIII. | **Recordkeeping** |
|  | All required books, records and other documentation shall be retained in accordance |
|  | with MFS' related record retention policy. |

---

**Additional procedures may need to be implemented by departments to properly comply with this policy.**

**<u>Exhibit A</u>**

**<u>As of April 1, 2024</u>**

**Persons Covered by this Code of Ethics**

Funds' Principal Executive Officer: David L. DiLorenzo

Funds' Principal Financial Officer: Kasey L. Phillips

------

## Ex-99

**<u>EX-99.302CERT</u>**

**MFS SERIES TRUST XII**

**Certification Pursuant to Section 302 of the Sarbanes-Oxley Act**

I, David L. DiLorenzo, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.I have reviewed this report on Form N-CSR of MFS Series Trust XII;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.The registrant's other certifying officer and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 13, 2025

<u>/S/ DAVID L. DILORENZO</u>

David L. DiLorenzo

President (Principal Executive Officer)

**<u>EX-99.302CERT</u>**

**MFS SERIES TRUST XII**

**Certification Pursuant to Section 302 of the Sarbanes-Oxley Act**

I, Kasey L. Phillips, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.I have reviewed this report on Form N-CSR of MFS Series Trust XII;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.The registrant's other certifying officer and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 13, 2025

<u>/S/ KASEY L. PHILLIPS</u>

Kasey L. Phillips

Treasurer (Principal Financial Officer and Accounting Officer)

------

## Exhibit 99.906

**<u>EX-99.906CERT</u>**

**MFS SERIES TRUST XII**

**Certification Pursuant to Section 906 of the Sarbanes-Oxley Act**

I, David L. DiLorenzo, certify that, to my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.The Form N-CSR (the "Report") of MFS Series Trust XII (the "Registrant") fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: June 13, 2025

<u>/S/ DAVID L. DILORENZO</u>

David L. DiLorenzo

President (Principal Executive Officer)

**A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.**

**<u>EX-99.906CERT</u>**

**MFS SERIES TRUST XII**

**Certification Pursuant to Section 906 of the Sarbanes-Oxley Act**

I, Kasey L. Phillips, certify that, to my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.The Form N-CSR (the "Report") of MFS Series Trust XII (the "Registrant") fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: June 13, 2025

<u>/S/ KASEY L. PHILLIPS</u>

Kasey L. Phillips

Treasurer (Principal Financial Officer and Accounting Officer)

**A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.**

------