# EDGAR Filing Document

**Accession Number:** 0001330967
**File Stem:** 0001193125-25-332495
**Filing Date:** 2025-12
**Character Count:** 1152133
**Document Hash:** d9f98509a09aab053b049b55d246e46a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-332495.hdr.sgml**: 20251229

**ACCESSION NUMBER**: 0001193125-25-332495

**CONFORMED SUBMISSION TYPE**: N-CSRS

**PUBLIC DOCUMENT COUNT**: 105

**CONFORMED PERIOD OF REPORT**: 20251031

**FILED AS OF DATE**: 20251229

**DATE AS OF CHANGE**: 20251229

**EFFECTIVENESS DATE**: 20251229

**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-CSRS
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-21780
- **FILM NUMBER:** 251603501

**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           |

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#### 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:

#### October 31, 2025

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

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class A-LTTAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $12 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2181813.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class B-LTTBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $51 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2181921.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class C-LTTCX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $51 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182015.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class I-LTTIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182109.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R1-LTTRX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $51 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182203.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R2-LTTSX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $25 | 0.49% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182297.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R3-LTTTX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $12 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182391.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R4-LTTUX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182485.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R6-LTTKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2025 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 335980618 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182579.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS High Income Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.7% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L25R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class A-MLTAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $13 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182673.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class B-MLTBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $52 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182767.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class C-MLTCX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $51 | 0.98% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182861.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class I-MLTIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2182955.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R1-MLTEX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $52 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183049.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R2-MLTGX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $26 | 0.49% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183143.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R3-MLTHX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $13 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183237.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R4-MLTJX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183331.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R6-MLTKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2030 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 752161123 | Portfolio Turnover Rate (%):<sub>2</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183425.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Total Return Bond Fund | 14.5% |
| MFS Limited Maturity Fund | 10.1% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research International Equity Fund | 4.3% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research Value Equity Fund | 3.0% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.7% |
| MFS Growth Fund | 2.7% |
| MFS Research Fund | 2.6% |
| MFS Blended Research Core Equity Fund | 2.6% |
| MFS Research International Fund | 2.1% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.8% |
| 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 | 0.0% |

---

#### 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML3R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class A-LFEAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $13 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183519.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class B-LFEBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183613.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class C-LFECX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183707.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class I-LFEDX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183801.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R1-LFERX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183895.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R2-LFESX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $26 | 0.49% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2183989.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R3-LFETX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $13 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184083.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R4-LFEUX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184177.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R6-LFEKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2035 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 649905930 | Portfolio Turnover Rate (%):<sub>6</sub> |
| Total Number of Holdings: | 30 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184271.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Government Securities Fund | 9.6% |
| MFS Total Return Bond Fund | 8.5% |
| MFS Inflation-Adjusted Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 6.9% |
| MFS Blended Research International Equity Fund | 6.3% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.0% |
| MFS Blended Research Value Equity Fund | 4.0% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.7% |
| MFS Growth Fund | 3.7% |
| MFS Research Fund | 3.7% |
| MFS Blended Research Core Equity Fund | 3.7% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.4% |
| MFS Research International Fund | 3.1% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Commodity Strategy Fund | 3.0% |
| MFS Global Real Estate Fund | 3.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.9% |
| MFS International Intrinsic Value Fund | 1.6% |
| MFS International Growth Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International New Discovery Fund | 1.0% |
| MFS New Discovery Fund | 0.8% |
| MFS New Discovery Value Fund | 0.7% |
| MFS Limited Maturity Fund | 0.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L35R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class A-MLFAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $13 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184365.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class B-MLFBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184459.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class C-MLFCX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184553.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class I-MLFIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184647.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R1-MLFEX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184741.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R2-MLFGX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $26 | 0.49% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184835.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R3-MLFHX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $13 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2184929.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R4-MLFJX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185023.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R6-MLFKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2040 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 838231076 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 29 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185117.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research Mid Cap Equity Fund | 8.9% |
| MFS Blended Research International Equity Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 5.0% |
| MFS Value Fund | 4.9% |
| MFS Blended Research Growth Equity Fund | 4.7% |
| MFS Growth Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Commodity Strategy Fund | 4.1% |
| MFS High Income Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Research International Fund | 3.6% |
| MFS Emerging Markets Debt Fund | 3.1% |
| MFS Global Opportunistic Bond Fund | 3.0% |
| MFS International Intrinsic Value Fund | 2.6% |
| MFS International Growth Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS International New Discovery Fund | 2.0% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 0.5% |
| MFS Blended Research Emerging Markets Equity Fund | 0.5% |
| MFS Government Securities 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML4R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class A-LTMAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $13 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185211.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class B-LTMBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%): | 3.0 |
| Total Number of Holdings: | 28 |  |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185305.jpg)

**Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class C-LTMDX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185399.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class I-LTMKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185493.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R1-LTMRX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185587.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R2-LTMSX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $27 | 0.50% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185681.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R3-LTMTX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $13 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185775.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R4-LTMUX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185869.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2045 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R6-LTMLX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2045 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 564044982 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2185963.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 10.1% |
| MFS Blended Research Mid Cap Equity Fund | 9.3% |
| 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 Blended Research Core Equity Fund | 4.7% |
| MFS Research Fund | 4.7% |
| MFS Mid Cap Value Fund | 4.7% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.6% |
| MFS Global Real Estate Fund | 4.4% |
| MFS Research International Fund | 3.8% |
| MFS Inflation-Adjusted Bond Fund | 3.7% |
| MFS International Intrinsic Value Fund | 3.1% |
| MFS International Growth Fund | 3.1% |
| MFS International New Discovery Fund | 3.0% |
| MFS Total Return Bond Fund | 2.2% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS High Income Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 1.5% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS Global Opportunistic Bond Fund | 1.5% |
| MFS New Discovery Fund | 1.1% |
| MFS New Discovery Value Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.8% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L45R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class A-MFFSX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186057.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class B-MFFRX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186151.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class C-MFFDX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186245.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class I-MFFIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186339.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R1-MFFMX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186433.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R2-MFFNX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $27 | 0.50% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186527.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R3-MFFOX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186621.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R4-MFFPX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186715.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2050 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R6-MFFKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2050 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 623667178 | Portfolio Turnover Rate (%):<sub>3</sub> |
| Total Number of Holdings: | 28 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186809.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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% |
| MFS High Income Fund | 0.0% |
| MFS Emerging Markets Debt Fund | 0.0% |
| MFS Global Opportunistic Bond Fund | 0.0% |
| MFS Emerging Markets Debt Local Currency 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML5R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class A-LFIAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186903.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class B-LFIBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2186997.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class C-LFICX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187091.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class I-LFIIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187185.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R1-LFIRX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187279.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R2-LFISX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $27 | 0.50% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187373.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R3-LFITX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187467.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R4-LFIUX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187561.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2055 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R6-LFIKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2055 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 436849019 | Portfolio Turnover Rate (%):<sub>4</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187655.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Blended Research International Equity Fund | 11.3% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| 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 Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 4.9% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Global Real Estate Fund | 4.9% |
| MFS Research Fund | 4.7% |
| MFS Blended Research Core Equity Fund | 4.7% |
| 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 | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L55R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class A-MFJAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188595.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class B-MFJBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $14 | 0.25% |

---

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

For the period from May 1, 2025 through October 31, 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 (annualized)" would have been approximately $54 and 1.00%, respectively.

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188689.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6B-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class C-MFJCX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $53 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188783.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class I-MFJIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188877.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R1-MFJEX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $14 | 0.25% |

---

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

For the period from May 1, 2025 through October 31, 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 (annualized)" would have been approximately $54 and 1.00%, respectively.

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188971.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R2-MFJGX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $27 | 0.50% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189065.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R3-MFJTX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189159.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R4-MFJUX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189253.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2060 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R6-MFJKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2060 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 256615060 | Portfolio Turnover Rate (%):<sub>5</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189347.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.1% |
| MFS Growth Fund | 5.1% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Research Fund | 4.6% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| MFS International Intrinsic Value Fund | 3.6% |
| MFS International Growth Fund | 3.6% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

ML6R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class A-LFTFX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189441.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65A-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class C-LFTGX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189535.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65C-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class I-LFTHX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189629.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65I-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R1-LFTJX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $54 | 1.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189723.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65R1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R2-LFTKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $27 | 0.50% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189817.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65R2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R3-LFTLX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $14 | 0.25% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2189911.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65R3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R4-LFTMX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2190005.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65R4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Lifetime<sup>®</sup> 2065 Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R6-LFTNX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime 2065 Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 42774282 | Portfolio Turnover Rate (%):<sub>7</sub> |
| Total Number of Holdings: | 24 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2190099.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 | 5.5% |
| MFS Blended Research Growth Equity Fund | 5.2% |
| MFS Growth Fund | 5.2% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Blended Research Core Equity Fund | 4.6% |
| MFS Research Fund | 4.6% |
| MFS Research International Fund | 4.1% |
| MFS International New Discovery Fund | 4.1% |
| 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 Total Return Bond Fund | 2.0% |
| MFS Institutional Money Market Portfolio | 1.5% |
| MFS New Discovery Fund | 1.2% |
| 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

L65R6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class A-MLLAX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| A | $12 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187749.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTA-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class B-MLLBX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| B | $51 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187843.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTB-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class C-MLLCX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| C | $51 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2187937.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTC-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class I-MLLIX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| I | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188031.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTI-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R1-MLLEX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R1 | $51 | 0.99% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188125.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTR1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R2-MLLGX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R2 | $25 | 0.49% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188219.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTR2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R3-MLLHX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R3 | $12 | 0.24% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188313.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTR3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R4-MLLJX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R4 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188407.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTR4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

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

![TSR_Ribbon_red](images_1181.jpg)

Class R6-MLLKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Lifetime Income Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) ~ |
| R6 | $0 | 0.00% |

---

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

FUND STATISTICS AS OF 10/31/25

---

| | | |
|:---|:---|:---|
| Net Assets ($): | 539145866 | Portfolio Turnover Rate (%):<sub>1</sub> |
| Total Number of Holdings: | 27 |  |

---

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

 **Portfolio allocation**

![Port Comp - Portfolio Target Allocation Chart](chartimages_2188501.jpg)

 **Portfolio holdings**

---

| | |
|:---|:---|
| MFS Limited Maturity Fund | 20.1% |
| MFS Total Return Bond Fund | 19.6% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.7% |
| MFS Global Opportunistic Bond Fund | 7.0% |
| MFS Blended Research Mid Cap Equity Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.8% |
| MFS High Income Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Research International Fund | 1.6% |
| MFS Blended Research Growth Equity Fund | 1.7% |
| MFS Institutional Money Market Portfolio | 1.6% |
| MFS Growth Fund | 1.6% |
| MFS Research Fund | 1.6% |
| MFS Blended Research Core Equity Fund | 1.6% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Emerging Markets Debt Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.6% |
| MFS International Growth 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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

LRTR6-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class A-MCBEX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| A | $31 | 0.61% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBA-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class C-MCBCX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| C | $70 | 1.36% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBC-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class I-MCBFX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| I | $18 | 0.36% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBI-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R1-MCBGX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| R1 | $70 | 1.36% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBR1-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R2-MCBHX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| R2 | $44 | 0.86% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBR2-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R3-MCBJX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| R3 | $31 | 0.61% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBR3-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R4-MCBKX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| R4 | $18 | 0.36% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBR4-SEM

![MFSLOGO_RED.EPS](images_1177.jpg)

MFS<sup>®</sup> Core Bond Fund

![TSR_Ribbon_red](images_1181.jpg)

Class R6-MCBMX

Semiannual Shareholder Report

This semiannual shareholder report contains important information about MFS Core Bond Fund for the period of May 1, 2025 to October 31, 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 six months?

---

| | | |
|:---|:---|:---|
| *(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 (annualized) |
| R6 | $17 | 0.33% |

---

FUND STATISTICS AS OF 10/31/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 33859480 | Average Effective Maturity (yrs): | 7.4 |
| Total Number of Holdings: | 291 | Average Effective Duration (yrs): | 6.0 |
| Portfolio Turnover Rate (%): | 54 |  |  |

---

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 10/31/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 93.9% |
| Money Market Funds | 6.1% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 12.0% |
| AA | 4.8% |
| A | 14.7% |
| BBB | 16.2% |
| U.S. Government | 22.6% |
| Federal Agencies | 23.6% |
| Money Market Funds | 6.1% |

---

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.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MCBR6-SEM

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#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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.
During the period covered by this report, the Registrant has not amended any provision in its Code of Ethics (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.

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#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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.
Not applicable for semi-annual reports.

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#### ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.
Not applicable for semi-annual reports.

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#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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.

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#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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**

10/31/25 (unaudited)

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** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 70.5% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 430664 | $5452205 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 915641 | 5411435 |
| MFS Global Opportunistic Bond Fund - Class R6 | 4562037 | 37956146 |
| MFS Government Securities Fund - Class R6 | 5968408 | 52104198 |
| MFS High Income Fund - Class R6 | 3456827 | 10854438 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 5863062 | 54057434 |
| MFS Limited Maturity Fund - Class R6 | 18391611 | 108510504 |
| MFS Total Return Bond Fund - Class R6 | 10901968 | 105531055 |
|  |  | $379877415 |
| International Equity Funds – 5.5% |  |  |
| MFS Blended Research International Equity Fund - Class R6 | 868379 | $14892696 |
| MFS International Growth Fund - Class R6 | 59146 | 2951981 |
| MFS International Intrinsic Value Fund - Class R6 | 64761 | 2963443 |
| MFS Research International Fund - Class R6 | 336017 | 8884304 |
|  |  | $29692424 |
| Non-Traditional Funds – 4.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 2676731 | $10840761 |
| MFS Global Real Estate Fund - Class R6 | 642453 | 10645448 |
|  |  | $21486209 |
| U.S. Equity Funds – 18.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 208958 | $8809671 |
| MFS Blended Research Growth Equity Fund - Class R6 | 292446 | 8846498 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 1054028 | 16010683 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 345834 | 5370795 |
| MFS Blended Research Value Equity Fund - Class R6 | 628918 | 10767083 |
| MFS Growth Fund - Class R6 | 38179 | 8834361 |
| MFS Mid Cap Growth Fund - Class R6 | 236067 | 7955452 |
| MFS Mid Cap Value Fund - Class R6 | 243312 | 8009822 |
| MFS New Discovery Fund - Class R6 (a) | 78468 | 2715776 |
| MFS New Discovery Value Fund - Class R6 | 149936 | 2655369 |
| MFS Research Fund - Class R6 | 135436 | 8815541 |
| MFS Value Fund - Class R6 | 206066 | 10672168 |
|  |  | $99463219 |
| Money Market Funds – 1.6% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 8840628 | $8842396 |
| **Total Mutual Funds (Identified Cost, $457,289,095)** |  | **$539361663** |
| Other Assets, Less Liabilities – (0.0)% |  | (215797) |
| **Net Assets – 100.0%** |  | **$539145866** |

---

**See Portfolio Footnotes and Notes to Financial Statements**

LTFFS-SEM 1

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2025 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 70.4% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 267634 | $3388248 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 570477 | 3371523 |
| MFS Global Opportunistic Bond Fund - Class R6 | 2839275 | 23622771 |
| MFS Government Securities Fund - Class R6 | 3749203 | 32730539 |
| MFS High Income Fund - Class R6 | 2151813 | 6756692 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 3651313 | 33665107 |
| MFS Limited Maturity Fund - Class R6 | 11447011 | 67537364 |
| MFS Total Return Bond Fund - Class R6 | 6787790 | 65705807 |
|  |  | $236778051 |
| International Equity Funds – 5.5% |  |  |
| MFS Blended Research International Equity Fund - Class R6 | 541529 | $9287230 |
| MFS International Growth Fund - Class R6 | 36909 | 1842103 |
| MFS International Intrinsic Value Fund - Class R6 | 40448 | 1850891 |
| MFS Research International Fund - Class R6 | 209847 | 5548364 |
|  |  | $18528588 |
| Non-Traditional Funds – 4.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 1668766 | $6758501 |
| MFS Global Real Estate Fund - Class R6 | 399095 | 6613001 |
|  |  | $13371502 |
| U.S. Equity Funds – 18.5% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 130245 | $5491123 |
| MFS Blended Research Growth Equity Fund - Class R6 | 182180 | 5510951 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 658756 | 10006507 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 216221 | 3357912 |
| MFS Blended Research Value Equity Fund - Class R6 | 392423 | 6718277 |
| MFS Growth Fund - Class R6 | 23793 | 5505508 |
| MFS Mid Cap Growth Fund - Class R6 | 148713 | 5011624 |
| MFS Mid Cap Value Fund - Class R6 | 151866 | 4999431 |
| MFS New Discovery Fund - Class R6 (a) | 48848 | 1690639 |
| MFS New Discovery Value Fund - Class R6 | 94109 | 1666665 |
| MFS Research Fund - Class R6 | 84390 | 5492944 |
| MFS Value Fund - Class R6 | 128677 | 6664198 |
|  |  | $62115779 |
| Money Market Funds – 1.6% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 5306437 | $5307498 |
| **Total Mutual Funds (Identified Cost, $295,140,468)** |  | **$336101418** |
| Other Assets, Less Liabilities – (0.0)% |  | (120800) |
| **Net Assets – 100.0%** |  | **$335980618** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

2 LTFFS-SEM

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2030 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 59.3% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 1198967 | $15178919 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 2538689 | 15003651 |
| MFS Global Opportunistic Bond Fund - Class R6 | 6344317 | 52784717 |
| MFS Government Securities Fund - Class R6 | 8365715 | 73032695 |
| MFS High Income Fund - Class R6 | 9569789 | 30049137 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 8137312 | 75026017 |
| MFS Limited Maturity Fund - Class R6 | 12806137 | 75556207 |
| MFS Total Return Bond Fund - Class R6 | 11298867 | 109373037 |
|  |  | $446004380 |
| International Equity Funds – 8.5% |  |  |
| MFS Blended Research International Equity Fund - Class R6 | 1875962 | $32172755 |
| MFS International Growth Fund - Class R6 | 158546 | 7913027 |
| MFS International Intrinsic Value Fund - Class R6 | 173284 | 7929453 |
| MFS International New Discovery Fund - Class R6 | 294 | 10135 |
| MFS Research International Fund - Class R6 | 603904 | 15967229 |
|  |  | $63992599 |
| Non-Traditional Funds – 4.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 3760505 | $15230043 |
| MFS Global Real Estate Fund - Class R6 | 897347 | 14869041 |
|  |  | $30099084 |
| U.S. Equity Funds – 26.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 471767 | $19889714 |
| MFS Blended Research Growth Equity Fund - Class R6 | 664188 | 20091699 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 1949211 | 29608520 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 481803 | 7482403 |
| MFS Blended Research Value Equity Fund - Class R6 | 1307742 | 22388536 |
| MFS Growth Fund - Class R6 | 86450 | 20003629 |
| MFS Mid Cap Growth Fund - Class R6 | 438708 | 14784447 |
| MFS Mid Cap Value Fund - Class R6 | 450803 | 14840437 |
| MFS New Discovery Fund - Class R6 (a) | 110061 | 3809199 |
| MFS New Discovery Value Fund - Class R6 | 208403 | 3690826 |
| MFS Research Fund - Class R6 | 306015 | 19918529 |
| MFS Value Fund - Class R6 | 429241 | 22230374 |
|  |  | $198738313 |
| Money Market Funds – 1.8% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 13208733 | $13211375 |
| **Total Mutual Funds (Identified Cost, $605,947,783)** |  | **$752045751** |
| Other Assets, Less Liabilities – 0.0% |  | 115372 |
| **Net Assets – 100.0%** |  | **$752161123** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

LTFFS-SEM 3

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2035 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 39.2% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 1560194 | $19752060 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 2205120 | 13032258 |
| MFS Global Opportunistic Bond Fund - Class R6 | 3924956 | 32655631 |
| MFS Government Securities Fund - Class R6 | 7123546 | 62188555 |
| MFS High Income Fund - Class R6 | 8299128 | 26059262 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 4926998 | 45426924 |
| MFS Limited Maturity Fund - Class R6 | 34811 | 205388 |
| MFS Total Return Bond Fund - Class R6 | 5718563 | 55355686 |
|  |  | $254675764 |
| International Equity Funds – 13.5% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 165 | $3038 |
| MFS Blended Research International Equity Fund - Class R6 | 2382898 | 40866698 |
| MFS Emerging Markets Equity Fund - Class R6 | 65 | 3024 |
| MFS International Growth Fund - Class R6 | 202272 | 10095403 |
| MFS International Intrinsic Value Fund - Class R6 | 220737 | 10100943 |
| MFS International New Discovery Fund - Class R6 | 192904 | 6655177 |
| MFS Research International Fund - Class R6 | 762124 | 20150546 |
|  |  | $87874829 |
| Non-Traditional Funds – 6.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 4858737 | $19677885 |
| MFS Global Real Estate Fund - Class R6 | 1161211 | 19241267 |
|  |  | $38919152 |
| U.S. Equity Funds – 39.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 565310 | $23833484 |
| MFS Blended Research Growth Equity Fund - Class R6 | 796767 | 24102194 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 2945739 | 44745781 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 626556 | 9730418 |
| MFS Blended Research Value Equity Fund - Class R6 | 1510929 | 25867103 |
| MFS Growth Fund - Class R6 | 103672 | 23988671 |
| MFS Mid Cap Growth Fund - Class R6 | 661401 | 22289228 |
| MFS Mid Cap Value Fund - Class R6 | 680921 | 22415914 |
| MFS New Discovery Fund - Class R6 (a) | 143213 | 4956596 |
| MFS New Discovery Value Fund - Class R6 | 270085 | 4783206 |
| MFS Research Fund - Class R6 | 366908 | 23882026 |
| MFS Value Fund - Class R6 | 493839 | 25575914 |
|  |  | $256170535 |
| Money Market Funds – 1.9% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 12273328 | $12275783 |
| **Total Mutual Funds (Identified Cost, $495,700,111)** |  | **$649916063** |
| Other Assets, Less Liabilities – (0.0)% |  | (10133) |
| **Net Assets – 100.0%** |  | **$649905930** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

4 LTFFS-SEM

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2040 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 19.6% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 2011570 | $25466471 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 2842110 | 16796868 |
| MFS Global Opportunistic Bond Fund - Class R6 | 3042845 | 25316471 |
| MFS Government Securities Fund - Class R6 | 23419 | 204451 |
| MFS High Income Fund - Class R6 | 10698554 | 33593459 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 4553016 | 41978805 |
| MFS Total Return Bond Fund - Class R6 | 2195541 | 21252841 |
|  |  | $164609366 |
| International Equity Funds – 20.5% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 233656 | $4299273 |
| MFS Blended Research International Equity Fund - Class R6 | 4284739 | 73483276 |
| MFS Emerging Markets Equity Fund - Class R6 | 92768 | 4299796 |
| MFS International Growth Fund - Class R6 | 428010 | 21361969 |
| MFS International Intrinsic Value Fund - Class R6 | 468777 | 21451232 |
| MFS International New Discovery Fund - Class R6 | 491961 | 16972669 |
| MFS Research International Fund - Class R6 | 1142054 | 30195894 |
|  |  | $172064109 |
| Non-Traditional Funds – 8.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 8363731 | $33873112 |
| MFS Global Real Estate Fund - Class R6 | 1993407 | 33030758 |
|  |  | $66903870 |
| U.S. Equity Funds – 50.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 926795 | $39073688 |
| MFS Blended Research Growth Equity Fund - Class R6 | 1300952 | 39353796 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 4903064 | 74477540 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 1076259 | 16714303 |
| MFS Blended Research Value Equity Fund - Class R6 | 2443065 | 41825279 |
| MFS Growth Fund - Class R6 | 169340 | 39183515 |
| MFS Mid Cap Growth Fund - Class R6 | 1096864 | 36964320 |
| MFS Mid Cap Value Fund - Class R6 | 1131926 | 37262990 |
| MFS New Discovery Fund - Class R6 (a) | 243850 | 8439662 |
| MFS New Discovery Value Fund - Class R6 | 464081 | 8218868 |
| MFS Research Fund - Class R6 | 600201 | 39067070 |
| MFS Value Fund - Class R6 | 800133 | 41438915 |
|  |  | $422019946 |
| Money Market Funds – 1.5% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 12646131 | $12648660 |
| **Total Mutual Funds (Identified Cost, $552,022,045)** |  | **$838245951** |
| Other Assets, Less Liabilities – (0.0)% |  | (14875) |
| **Net Assets – 100.0%** |  | **$838231076** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

LTFFS-SEM 5

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2045 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 11.9% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 673440 | $8525745 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 947605 | 5600346 |
| MFS Global Opportunistic Bond Fund - Class R6 | 1009985 | 8403079 |
| MFS High Income Fund - Class R6 | 3561255 | 11182340 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 2278367 | 21006546 |
| MFS Total Return Bond Fund - Class R6 | 1312308 | 12703143 |
|  |  | $67421199 |
| International Equity Funds – 24.7% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 241752 | $4448238 |
| MFS Blended Research International Equity Fund - Class R6 | 3320868 | 56952879 |
| MFS Emerging Markets Equity Fund - Class R6 | 95782 | 4439499 |
| MFS International Growth Fund - Class R6 | 346038 | 17270756 |
| MFS International Intrinsic Value Fund - Class R6 | 379024 | 17344126 |
| MFS International New Discovery Fund - Class R6 | 492525 | 16992118 |
| MFS Research International Fund - Class R6 | 819048 | 21655631 |
|  |  | $139103247 |
| Non-Traditional Funds – 9.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 6378336 | $25832262 |
| MFS Global Real Estate Fund - Class R6 | 1505469 | 24945615 |
|  |  | $50777877 |
| U.S. Equity Funds – 52.9% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 627979 | $26475618 |
| MFS Blended Research Growth Equity Fund - Class R6 | 933704 | 28244539 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 3467534 | 52671848 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 814723 | 12652644 |
| MFS Blended Research Value Equity Fund - Class R6 | 1725477 | 29540166 |
| MFS Growth Fund - Class R6 | 120956 | 27987997 |
| MFS Mid Cap Growth Fund - Class R6 | 777778 | 26211124 |
| MFS Mid Cap Value Fund - Class R6 | 799395 | 26316084 |
| MFS New Discovery Fund - Class R6 (a) | 185481 | 6419513 |
| MFS New Discovery Value Fund - Class R6 | 349979 | 6198127 |
| MFS Research Fund - Class R6 | 406170 | 26437581 |
| MFS Value Fund - Class R6 | 563181 | 29167123 |
|  |  | $298322364 |
| Money Market Funds – 1.5% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 8424926 | $8426611 |
| **Total Mutual Funds (Identified Cost, $397,083,100)** |  | **$564051298** |
| Other Assets, Less Liabilities – (0.0)% |  | (6316) |
| **Net Assets – 100.0%** |  | **$564044982** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

6 LTFFS-SEM

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2050 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 4.5% |  |  |
| MFS Emerging Markets Debt Fund - Class R6 | 3593 | $45489 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | 5076 | 30001 |
| MFS Global Opportunistic Bond Fund - Class R6 | 5408 | 44989 |
| MFS High Income Fund - Class R6 | 19136 | 60088 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 1694552 | 15623767 |
| MFS Total Return Bond Fund - Class R6 | 1293362 | 12519746 |
|  |  | $28324080 |
| International Equity Funds – 28.6% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 351034 | $6459014 |
| MFS Blended Research International Equity Fund - Class R6 | 4109236 | 70473402 |
| MFS Emerging Markets Equity Fund - Class R6 | 139354 | 6459045 |
| MFS International Growth Fund - Class R6 | 442956 | 22107945 |
| MFS International Intrinsic Value Fund - Class R6 | 486200 | 22248491 |
| MFS International New Discovery Fund - Class R6 | 727601 | 25102237 |
| MFS Research International Fund - Class R6 | 961050 | 25410171 |
|  |  | $178260305 |
| Non-Traditional Funds – 10.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 7797604 | $31580295 |
| MFS Global Real Estate Fund - Class R6 | 1853303 | 30709237 |
|  |  | $62289532 |
| U.S. Equity Funds – 55.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 690268 | $29101684 |
| MFS Blended Research Growth Equity Fund - Class R6 | 1072498 | 32443077 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 4053641 | 61574813 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 1002440 | 15567886 |
| MFS Blended Research Value Equity Fund - Class R6 | 2001121 | 34259195 |
| MFS Growth Fund - Class R6 | 139829 | 32355019 |
| MFS Mid Cap Growth Fund - Class R6 | 911499 | 30717522 |
| MFS Mid Cap Value Fund - Class R6 | 935973 | 30812235 |
| MFS New Discovery Fund - Class R6 (a) | 227137 | 7861206 |
| MFS New Discovery Value Fund - Class R6 | 433093 | 7670085 |
| MFS Research Fund - Class R6 | 447662 | 29138293 |
| MFS Value Fund - Class R6 | 654337 | 33888092 |
|  |  | $345389107 |
| Money Market Funds – 1.5% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 9430136 | $9432022 |
| **Total Mutual Funds (Identified Cost, $431,212,739)** |  | **$623695046** |
| Other Assets, Less Liabilities – (0.0)% |  | (27868) |
| **Net Assets – 100.0%** |  | **$623667178** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

LTFFS-SEM 7

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2055 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 4.5% |  |  |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 1181780 | $10896013 |
| MFS Total Return Bond Fund - Class R6 | 903041 | 8741435 |
|  |  | $19637448 |
| International Equity Funds – 28.6% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 247519 | $4554340 |
| MFS Blended Research International Equity Fund - Class R6 | 2880301 | 49397161 |
| MFS Emerging Markets Equity Fund - Class R6 | 98196 | 4551398 |
| MFS International Growth Fund - Class R6 | 310664 | 15505224 |
| MFS International Intrinsic Value Fund - Class R6 | 340105 | 15563214 |
| MFS International New Discovery Fund - Class R6 | 510466 | 17611079 |
| MFS Research International Fund - Class R6 | 672288 | 17775296 |
|  |  | $124957712 |
| Non-Traditional Funds – 10.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 5464038 | $22129355 |
| MFS Global Real Estate Fund - Class R6 | 1298509 | 21516295 |
|  |  | $43645650 |
| U.S. Equity Funds – 55.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 483223 | $20372683 |
| MFS Blended Research Growth Equity Fund - Class R6 | 753293 | 22787103 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 2839994 | 43139508 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 701719 | 10897694 |
| MFS Blended Research Value Equity Fund - Class R6 | 1398063 | 23934838 |
| MFS Growth Fund - Class R6 | 98086 | 22696076 |
| MFS Mid Cap Growth Fund - Class R6 | 640444 | 21582949 |
| MFS Mid Cap Value Fund - Class R6 | 655682 | 21585042 |
| MFS New Discovery Fund - Class R6 (a) | 159091 | 5506157 |
| MFS New Discovery Value Fund - Class R6 | 303960 | 5383140 |
| MFS Research Fund - Class R6 | 313347 | 20395753 |
| MFS Value Fund - Class R6 | 458344 | 23737650 |
|  |  | $242018593 |
| Money Market Funds – 1.5% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 6515625 | $6516928 |
| **Total Mutual Funds (Identified Cost, $322,599,311)** |  | **$436776331** |
| Other Assets, Less Liabilities – 0.0% |  | 72688 |
| **Net Assets – 100.0%** |  | **$436849019** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

8 LTFFS-SEM

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2060 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.0% |  |  |
| Bond Funds – 4.5% |  |  |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 697934 | $6434953 |
| MFS Total Return Bond Fund - Class R6 | 532308 | 5152743 |
|  |  | $11587696 |
| International Equity Funds – 28.6% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 143519 | $2640756 |
| MFS Blended Research International Equity Fund - Class R6 | 1682693 | 28858189 |
| MFS Emerging Markets Equity Fund - Class R6 | 56981 | 2641049 |
| MFS International Growth Fund - Class R6 | 182345 | 9100839 |
| MFS International Intrinsic Value Fund - Class R6 | 199986 | 9151345 |
| MFS International New Discovery Fund - Class R6 | 301531 | 10402812 |
| MFS Research International Fund - Class R6 | 394460 | 10429528 |
|  |  | $73224518 |
| Non-Traditional Funds – 10.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 3197447 | $12949659 |
| MFS Global Real Estate Fund - Class R6 | 768576 | 12735312 |
|  |  | $25684971 |
| U.S. Equity Funds – 55.4% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 281771 | $11879455 |
| MFS Blended Research Growth Equity Fund - Class R6 | 436277 | 13197364 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 1681325 | 25539327 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 412086 | 6399700 |
| MFS Blended Research Value Equity Fund - Class R6 | 823121 | 14091833 |
| MFS Growth Fund - Class R6 | 56993 | 13187706 |
| MFS Mid Cap Growth Fund - Class R6 | 379592 | 12792253 |
| MFS Mid Cap Value Fund - Class R6 | 387903 | 12769763 |
| MFS New Discovery Fund - Class R6 (a) | 93025 | 3219584 |
| MFS New Discovery Value Fund - Class R6 | 180192 | 3191204 |
| MFS Research Fund - Class R6 | 182778 | 11897011 |
| MFS Value Fund - Class R6 | 271278 | 14049500 |
|  |  | $142214700 |
| Money Market Funds – 1.5% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 3890286 | $3891064 |
| **Total Mutual Funds (Identified Cost, $202,800,343)** |  | **$256602949** |
| Other Assets, Less Liabilities – 0.0% |  | 12111 |
| **Net Assets – 100.0%** |  | **$256615060** |
| **See Portfolio Footnotes and Notes to Financial Statements** |  |  |

---

LTFFS-SEM 9

Portfolio of Investments (unaudited) – continued

**MFS LIFETIME 2065 FUND**

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Mutual Funds (h) – 100.1% |  |  |
| Bond Funds – 4.5% |  |  |
| MFS Inflation-Adjusted Bond Fund - Class R6 | 116099 | $1070438 |
| MFS Total Return Bond Fund - Class R6 | 88548 | 857143 |
|  |  | $1927581 |
| International Equity Funds – 28.5% |  |  |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | 23779 | $437526 |
| MFS Blended Research International Equity Fund - Class R6 | 279780 | 4798226 |
| MFS Emerging Markets Equity Fund - Class R6 | 9456 | 438280 |
| MFS International Growth Fund - Class R6 | 30462 | 1520346 |
| MFS International Intrinsic Value Fund - Class R6 | 33297 | 1523665 |
| MFS International New Discovery Fund - Class R6 | 50345 | 1736909 |
| MFS Research International Fund - Class R6 | 65803 | 1739844 |
|  |  | $12194796 |
| Non-Traditional Funds – 10.0% |  |  |
| MFS Commodity Strategy Fund - Class R6 | 529352 | $2143878 |
| MFS Global Real Estate Fund - Class R6 | 128614 | 2131129 |
|  |  | $4275007 |
| U.S. Equity Funds – 55.5% |  |  |
| MFS Blended Research Core Equity Fund - Class R6 | 47027 | $1982653 |
| MFS Blended Research Growth Equity Fund - Class R6 | 73009 | 2208510 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | 280885 | 4266645 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | 68741 | 1067541 |
| MFS Blended Research Value Equity Fund - Class R6 | 137230 | 2349377 |
| MFS Growth Fund - Class R6 | 9533 | 2205840 |
| MFS Mid Cap Growth Fund - Class R6 | 63306 | 2133415 |
| MFS Mid Cap Value Fund - Class R6 | 64803 | 2133324 |
| MFS New Discovery Fund - Class R6 (a) | 15478 | 535707 |
| MFS New Discovery Value Fund - Class R6 | 30106 | 533176 |
| MFS Research Fund - Class R6 | 30457 | 1982407 |
| MFS Value Fund - Class R6 | 45316 | 2346931 |
|  |  | $23745526 |
| Money Market Funds – 1.6% |  |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) | 653652 | $653783 |
| **Total Mutual Funds (Identified Cost, $36,546,303)** |  | **$42796693** |
| Other Assets, Less Liabilities – (0.1)% |  | (22411) |
| **Net Assets – 100.0%** |  | **$42774282** |

---

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** |
| MFS Lifetime Income Fund | $539361663 |
| MFS Lifetime 2025 Fund | 336101418 |
| MFS Lifetime 2030 Fund | 752045751 |
| MFS Lifetime 2035 Fund | 649916063 |
| MFS Lifetime 2040 Fund | 838245951 |
| MFS Lifetime 2045 Fund | 564051298 |
| MFS Lifetime 2050 Fund | 623695046 |
| MFS Lifetime 2055 Fund | 436776331 |
| MFS Lifetime 2060 Fund | 256602949 |
| MFS Lifetime 2065 Fund | 42796693 |

---

10 LTFFS-SEM

Portfolio of Investments (unaudited) – 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-SEM 11

Financial Statements

**STATEMENTS OF ASSETS AND LIABILITIES**

At 10/31/25 (unaudited)

These statements represent each fund's balance sheet, which details the assets and liabilities comprising the total value of each fund.

---

| | | | |
|:---|:---|:---|:---|
| <br>**Assets** | **MFS Lifetime**<br>**Income Fund**<br>| **MFS Lifetime**<br>**2025 Fund**<br>| **MFS Lifetime**<br>**2030 Fund**<br>|
| Investments in affiliated issuers, at value (identified cost, $457,289,095, $295,140,468, and $605,947,783, |  |  |  |
| &nbsp;&nbsp;&nbsp;respectively) | $539361663 | $336101418 | $752045751 |
| Receivables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments sold | 1131293 | 1029895 | 155550 |
| &nbsp;&nbsp;&nbsp;Fund shares sold | 127509 | 111838 | 539855 |
| Receivable from investment adviser | 96436 | 71335 | 130647 |
| Other assets | 30050 | 25129 | 32631 |
| Total assets | $540746951 | $337339615 | $752904434 |
| **Liabilities** |  |  |  |
| Payables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Distributions | $66669 | $— | $— |
| &nbsp;&nbsp;&nbsp;Investments purchased |  | 10055 | 375055 |
| &nbsp;&nbsp;&nbsp;Fund shares reacquired | 1345488 | 1247129 | 174954 |
| Payable to affiliates |  |  |  |
| &nbsp;&nbsp;&nbsp;Administrative services fee | 96 | 96 | 96 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | 139950 | 63900 | 147529 |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | 4822 | 1959 | 5324 |
| Accrued expenses and other liabilities | 44060 | 35858 | 40353 |
| Total liabilities | $1601085 | $1358997 | $743311 |
| Net assets | $539145866 | $335980618 | $752161123 |
| **Net assets consist of** |  |  |  |
| Paid-in capital | $473757813 | $289154755 | $578885153 |
| Total distributable earnings (loss) | 65388053 | 46825863 | 173275970 |
| Net assets | $539145866 | $335980618 | $752161123 |

---

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **Income Fund** | **2025 Fund** | **2030 Fund** |
| Net assets |  |  |  |
| Class A | $185192847 | $29781882 | $96623417 |
| Class B | 263469 | 147875 | 900665 |
| Class C | 12407148 | 2105442 | 6557179 |
| Class I | 44890820 | 3498814 | 9079704 |
| Class R1 | 2736612 | 239726 | 3459501 |
| Class R2 | 20389542 | 11534016 | 33239415 |
| Class R3 | 81477028 | 79528793 | 185299756 |
| Class R4 | 15355771 | 30324788 | 40825405 |
| Class R6 | 176432629 | 178819282 | 376176081 |
| Total net assets | $539145866 | $335980618 | $752161123 |
| Shares of beneficial interest outstanding |  |  |  |
| Class A | 14544022 | 2132941 | 5665165 |
| Class B | 20692 | 10604 | 53251 |
| Class C | 974999 | 153417 | 394297 |
| Class I | 3524369 | 249196 | 528014 |
| Class R1 | 214593 | 17152 | 205222 |
| Class R2 | 1601133 | 828580 | 1969031 |
| Class R3 | 6399504 | 5701565 | 10902138 |
| Class R4 | 1206551 | 2151198 | 2363692 |
| Class R6 | 13812282 | 12691251 | 21808135 |
| Total shares of beneficial interest outstanding | 42298145 | 23935904 | 43888945 |
| Class A shares |  |  |  |
| Net asset value per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.73 | $13.96 | $17.06 |
| Offering price per share (100 / 95.75 x net asset value per share) | $13.30 | $— | $— |
| Offering price per share (100 / 94.25 x net asset value per share) | $— | $14.81 | $18.10 |
| Class B shares |  |  |  |
| Net asset value and offering price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.73 | $13.95 | $16.91 |
| Class C shares |  |  |  |
| Net asset value and offering price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.73 | $13.72 | $16.63 |
| Class I shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.74 | $14.04 | $17.20 |
| Class R1 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.75 | $13.98 | $16.86 |
| Class R2 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.73 | $13.92 | $16.88 |
| Class R3 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.73 | $13.95 | $17.00 |
| Class R4 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.73 | $14.10 | $17.27 |

---

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **Income Fund** | **2025 Fund** | **2030 Fund** |
| Class R6 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $12.77 | $14.09 | $17.25 |

---

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 (unaudited) – continued

---

| | | | | |
|:---|:---|:---|:---|:---|
| **At 10/31/25**<br>**Assets** | **MFS Lifetime**<br>**2035 Fund**<br>| **MFS Lifetime**<br>**2040 Fund**<br>| **MFS Lifetime**<br>**2045 Fund**<br>| **MFS Lifetime**<br>**2050 Fund**<br>|
| Investments in affiliated issuers, at value (identified cost, $495,700,111, $552,022,045, |  |  |  |  |
| &nbsp;&nbsp;&nbsp;$397,083,100, and $431,212,739, respectively) | $649916063 | $838245951 | $564051298 | $623695046 |
| Receivables for |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments sold |  | 2043964 | 52705 | 74606 |
| &nbsp;&nbsp;&nbsp;Fund shares sold | 412367 | 303323 | 432026 | 253028 |
| Receivable from investment adviser | 114412 | 143263 | 98580 | 109271 |
| Other assets | 28575 | 31598 | 28598 | 30477 |
| Total assets | $650471417 | $840768099 | $564663207 | $624162428 |
| **Liabilities** |  |  |  |  |
| Payables for |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments purchased | $196386 | $27171 | $184348 | $36690 |
| &nbsp;&nbsp;&nbsp;Fund shares reacquired | 216328 | 2302826 | 285946 | 298851 |
| Payable to affiliates |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Administrative services fee | 96 | 96 | 96 | 96 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | 111860 | 162446 | 108010 | 118700 |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | 3676 | 5626 | 3241 | 3722 |
| Accrued expenses and other liabilities | 37141 | 38858 | 36584 | 37191 |
| Total liabilities | $565487 | $2537023 | $618225 | $495250 |
| Net assets | $649905930 | $838231076 | $564044982 | $623667178 |
| **Net assets consist of** |  |  |  |  |
| Paid-in capital | $475261810 | $530534014 | $384546248 | $418203932 |
| Total distributable earnings (loss) | 174644120 | 307697062 | 179498734 | 205463246 |
| Net assets | $649905930 | $838231076 | $564044982 | $623667178 |

---

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2035 Fund** | **2040 Fund** | **2045 Fund** | **2050 Fund** |
| Net assets |  |  |  |  |
| Class A | $52294104 | $82360813 | $38946546 | $45471405 |
| Class B | 276421 | 667522 | 211809 | 456978 |
| Class C | 5561156 | 5831543 | 3169954 | 4447682 |
| Class I | 9450195 | 16497181 | 13698552 | 9046698 |
| Class R1 | 1345468 | 3124193 | 857368 | 1062144 |
| Class R2 | 13926338 | 42478847 | 11011083 | 18049499 |
| Class R3 | 162555114 | 203493397 | 160243474 | 165680192 |
| Class R4 | 27066432 | 44612103 | 21027902 | 38197705 |
| Class R6 | 377430702 | 439165477 | 314878294 | 341254875 |
| Total net assets | $649905930 | $838231076 | $564044982 | $623667178 |
| Shares of beneficial interest outstanding |  |  |  |  |
| Class A | 2692115 | 3773151 | 1781652 | 1717645 |
| Class B | 14278 | 30685 | 9736 | 17502 |
| Class C | 292510 | 274522 | 147886 | 172993 |
| Class I | 484014 | 748020 | 621513 | 340956 |
| Class R1 | 69856 | 145184 | 39563 | 41147 |
| Class R2 | 716145 | 1960534 | 505434 | 690482 |
| Class R3 | 8346606 | 9322846 | 7332360 | 6317385 |
| Class R4 | 1374391 | 2009659 | 951486 | 1438598 |
| Class R6 | 19194182 | 19799715 | 14266739 | 12863520 |
| Total shares of beneficial interest outstanding | 33184097 | 38064316 | 25656369 | 23600228 |
| Class A shares |  |  |  |  |
| Net asset value per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.42 | $21.83 | $21.86 | $26.47 |
| Offering price per share (100 / 94.25 x net asset value per share) | $20.60 | $23.16 | $23.19 | $28.08 |
| Class B shares |  |  |  |  |
| Net asset value and offering price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.36 | $21.75 | $21.76 | $26.11 |
| Class C shares |  |  |  |  |
| Net asset value and offering price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.01 | $21.24 | $21.44 | $25.71 |
| Class I shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.52 | $22.05 | $22.04 | $26.53 |
| Class R1 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.26 | $21.52 | $21.67 | $25.81 |
| Class R2 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.45 | $21.67 | $21.79 | $26.14 |
| Class R3 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.48 | $21.83 | $21.85 | $26.23 |
| Class R4 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.69 | $22.20 | $22.10 | $26.55 |

---

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2035 Fund** | **2040 Fund** | **2045 Fund** | **2050 Fund** |
| Class R6 shares |  |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $19.66 | $22.18 | $22.07 | $26.53 |

---

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.

**See Notes to Financial Statements**

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | |
|:---|:---|:---|:---|
| **At 10/31/25**<br>**Assets** | **MFS Lifetime**<br>**2055 Fund**<br>| **MFS Lifetime**<br>**2060 Fund**<br>| **MFS Lifetime**<br>**2065 Fund**<br>|
| Investments in affiliated issuers, at value (identified cost, $322,599,311, $202,800,343, and $36,546,303, |  |  |  |
| &nbsp;&nbsp;&nbsp;respectively) | $436776331 | $256602949 | $42796693 |
| Receivables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments sold | 62232 |  | 50878 |
| &nbsp;&nbsp;&nbsp;Fund shares sold | 485246 | 556611 | 169388 |
| Receivable from investment adviser | 87717 | 64980 | 19965 |
| Other assets | 27632 | 26141 | 490 |
| Total assets | $437439158 | $257250681 | $43037414 |
| **Liabilities** |  |  |  |
| Payables for |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments purchased | $332145 | $511371 | $135953 |
| &nbsp;&nbsp;&nbsp;Fund shares reacquired | 141111 | 32125 | 88450 |
| Payable to affiliates |  |  |  |
| &nbsp;&nbsp;&nbsp;Administrative services fee | 96 | 96 | 96 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | 78110 | 55675 | 8572 |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | 2701 | 1596 | 289 |
| Accrued expenses and other liabilities | 35976 | 34758 | 29772 |
| Total liabilities | $590139 | $635621 | $263132 |
| Net assets | $436849019 | $256615060 | $42774282 |
| **Net assets consist of** |  |  |  |
| Paid-in capital | $314426685 | $198802121 | $35766890 |
| Total distributable earnings (loss) | 122422334 | 57812939 | 7007392 |
| Net assets | $436849019 | $256615060 | $42774282 |

---

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Net assets |  |  |  |
| Class A | $28162164 | $21771048 | $2810790 |
| Class B | 237409 | 156594 |  |
| Class C | 2952285 | 1922457 | 395651 |
| Class I | 4732707 | 1261492 | 701002 |
| Class R1 | 2770269 | 117066 | 73860 |
| Class R2 | 11992731 | 4934718 | 1803930 |
| Class R3 | 120769874 | 78332545 | 12835244 |
| Class R4 | 14309223 | 6207282 | 1119042 |
| Class R6 | 250922357 | 141911858 | 23034763 |
| Total net assets | $436849019 | $256615060 | $42774282 |
| Shares of beneficial interest outstanding |  |  |  |
| Class A | 1232631 | 1182097 | 248744 |
| Class B | 10436 | 8462 |  |
| Class C | 131734 | 105961 | 35348 |
| Class I | 206631 | 67761 | 61682 |
| Class R1 | 123497 | 6314 | 6565 |
| Class R2 | 525833 | 268654 | 160126 |
| Class R3 | 5285060 | 4246820 | 1135873 |
| Class R4 | 618410 | 333623 | 98557 |
| Class R6 | 10849267 | 7599782 | 2024319 |
| Total shares of beneficial interest outstanding | 18983499 | 13819474 | 3771214 |
| Class A shares |  |  |  |
| Net asset value per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.85 | $18.42 | $11.30 |
| Offering price per share (100 / 94.25 x net asset value per share) | $24.24 | $19.54 | $11.99 |
| Class B shares |  |  |  |
| Net asset value and offering price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.75 | $18.51 | $— |
| Class C shares |  |  |  |
| Net asset value and offering price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.41 | $18.14 | $11.19 |
| Class I shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.90 | $18.62 | $11.36 |
| Class R1 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.43 | $18.54 | $11.25 |
| Class R2 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.81 | $18.37 | $11.27 |
| Class R3 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $22.85 | $18.44 | $11.30 |
| Class R4 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $23.14 | $18.61 | $11.35 |

---

Statements of Assets and Liabilities (unaudited) – continued

---

| | | | |
|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Class R6 shares |  |  |  |
| Net asset value, offering price, and redemption price per share |  |  |  |
| &nbsp;&nbsp;&nbsp;(net assets / shares of beneficial interest outstanding) | $23.13 | $18.67 | $11.38 |

---

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.

**See Notes to Financial Statements**

Financial Statements

**STATEMENTS OF OPERATIONS**

Six months ended 10/31/25 (unaudited)

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.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| <br>**Net investment income (loss)** | **MFS Lifetime**<br>**Income Fund**<br>| **MFS Lifetime**<br>**2025 Fund**<br>| **MFS Lifetime**<br>**2030 Fund**<br>| **MFS Lifetime**<br>**2035 Fund**<br>| **MFS Lifetime**<br>**2040 Fund**<br>|
| Dividends from affiliated issuers | $8854213 | $5506711 | $10189427 | $5775576 | $4299272 |
| Payments from investment adviser for other expenses agreement (See |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Note 3) | 110297 | 130231 | 260366 | 259097 | 301721 |
| Total investment income | $8964510 | $5636942 | $10449793 | $6034673 | $4600993 |
| Expenses |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | $474288 | $184335 | $499636 | $337691 | $508900 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | 268273 | 130083 | 301188 | 218574 | 317798 |
| &nbsp;&nbsp;&nbsp;Administrative services fee | 8823 | 8823 | 8823 | 8823 | 8823 |
| &nbsp;&nbsp;&nbsp;Independent Trustees' compensation | 7113 | 4743 | 9066 | 7432 | 9211 |
| &nbsp;&nbsp;&nbsp;Custodian fee | 12131 | 4924 | 8118 | 6850 | 8276 |
| &nbsp;&nbsp;&nbsp;Shareholder communications | 10072 | 4767 | 6479 | 6215 | 7337 |
| &nbsp;&nbsp;&nbsp;Audit and tax fees | 26338 | 25434 | 25867 | 25436 | 25613 |
| &nbsp;&nbsp;&nbsp;Legal fees | 1576 | 999 | 2064 | 1626 | 2094 |
| &nbsp;&nbsp;&nbsp;Registration fees | 68781 | 68090 | 69035 | 69776 | 70072 |
| &nbsp;&nbsp;&nbsp;Miscellaneous | 19759 | 18648 | 20574 | 19772 | 20757 |
| Total expenses | $897154 | $450846 | $950850 | $702195 | $978881 |
| &nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | (433100) | (271950) | (464714) | (370128) | (480148) |
| Net expenses | $464054 | $178896 | $486136 | $332067 | $498733 |
| Net investment income (loss) | $8500456 | $5458046 | $9963657 | $5702606 | $4102260 |
| **Realized and unrealized gain (loss)** |  |  |  |  |  |
| Realized gain (loss) (identified cost basis) |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments in affiliated issuers | $3862486 | $4518031 | $12522895 | $7801960 | $7534153 |
| &nbsp;&nbsp;&nbsp;Capital gain distributions from affiliated issuers | 246169 | 154402 | 481270 | 576292 | 960397 |
| Net realized gain (loss) | $4108655 | $4672433 | $13004165 | $8378252 | $8494550 |
| Change in unrealized appreciation or depreciation |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Affiliated issuers | $21677230 | $11923024 | $37026234 | $51795725 | $88481028 |
| Net realized and unrealized gain (loss) | $25785885 | $16595457 | $50030399 | $60173977 | $96975578 |
| Change in net assets from operations | $34286341 | $22053503 | $59994056 | $65876583 | $101077838 |

---

**See Notes to Financial Statements**

Statements of Operations (unaudited) – continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Six months ended 10/31/25**<br>**Net investment income (loss)** | **MFS Lifetime**<br>**2045 Fund**<br>| **MFS Lifetime**<br>**2050 Fund**<br>| **MFS Lifetime**<br>**2055 Fund**<br>| **MFS Lifetime**<br>**2060 Fund**<br>| **MFS Lifetime**<br>**2065 Fund**<br>|
| Dividends from affiliated issuers | $1942106 | $1173818 | $812724 | $477426 | $75143 |
| Payments from investment adviser for other expenses agreement (See |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Note 3) | 215453 | 233630 | 169901 | 98501 | 15383 |
| Total investment income | $2157559 | $1407448 | $982625 | $575927 | $90526 |
| Expenses |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Distribution and service fees | $292293 | $331666 | $238464 | $140377 | $24478 |
| &nbsp;&nbsp;&nbsp;Shareholder servicing costs | 206897 | 234150 | 167412 | 118112 | 27879 |
| &nbsp;&nbsp;&nbsp;Administrative services fee | 8823 | 8823 | 8823 | 8823 | 8823 |
| &nbsp;&nbsp;&nbsp;Independent Trustees' compensation | 6490 | 6952 | 5219 | 3416 | 1520 |
| &nbsp;&nbsp;&nbsp;Custodian fee | 6197 | 6497 | 4942 | 3566 | 4753 |
| &nbsp;&nbsp;&nbsp;Shareholder communications | 6732 | 7668 | 7508 | 8814 | 3664 |
| &nbsp;&nbsp;&nbsp;Audit and tax fees | 25184 | 25252 | 25180 | 24768 | 21828 |
| &nbsp;&nbsp;&nbsp;Legal fees | 1415 | 1529 | 1028 | 567 | 73 |
| &nbsp;&nbsp;&nbsp;Registration fees | 68095 | 68735 | 68242 | 67615 | 89030 |
| &nbsp;&nbsp;&nbsp;Miscellaneous | 19456 | 19647 | 18727 | 18100 | 16703 |
| Total expenses | $641582 | $710919 | $545545 | $394158 | $198751 |
| &nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | (349450) | (382439) | (309738) | (253381) | (174202) |
| Net expenses | $292132 | $328480 | $235807 | $140777 | $24549 |
| Net investment income (loss) | $1865427 | $1078968 | $746818 | $435150 | $65977 |
| **Realized and unrealized gain (loss)** |  |  |  |  |  |
| Realized gain (loss) (identified cost basis) |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Investments in affiliated issuers | $4254251 | $2899283 | $968087 | $271218 | $(36648) |
| &nbsp;&nbsp;&nbsp;Capital gain distributions from affiliated issuers | 687315 | 811821 | 562309 | 323359 | 50310 |
| Net realized gain (loss) | $4941566 | $3711104 | $1530396 | $594577 | $13662 |
| Change in unrealized appreciation or depreciation |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Affiliated issuers | $64363166 | $75925353 | $53418820 | $31047887 | $4905751 |
| Net realized and unrealized gain (loss) | $69304732 | $79636457 | $54949216 | $31642464 | $4919413 |
| Change in net assets from operations | $71170159 | $80715425 | $55696034 | $32077614 | $4985390 |

---

**See Notes to Financial Statements**

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.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Six months ended 10/31/25 (unaudited)**<br>**Change in net assets**<br>**From operations** | **MFS Lifetime**<br>**Income Fund**<br>| **MFS Lifetime**<br>**2025 Fund**<br>| **MFS Lifetime**<br>**2030 Fund**<br>| **MFS Lifetime**<br>**2035 Fund**<br>| **MFS Lifetime**<br>**2040 Fund**<br>|
| Net investment income (loss) | $8500456 | $5458046 | $9963657 | $5702606 | $4102260 |
| Net realized gain (loss) | 4108655 | 4672433 | 13004165 | 8378252 | 8494550 |
| Net unrealized gain (loss) | 21677230 | 11923024 | 37026234 | 51795725 | 88481028 |
| Change in net assets from operations | $34286341 | $22053503 | $59994056 | $65876583 | $101077838 |
| Total distributions to shareholders | $(8175063) | $— | $— | $— | $— |
| Change in net assets from fund share transactions | $(38476781) | $(36331785) | $(49490916) | $(20236486) | $(28123861) |
| Total change in net assets | $(12365503) | $(14278282) | $10503140 | $45640097 | $72953977 |
| **Net assets** |  |  |  |  |  |
| At beginning of period | 551511369 | 350258900 | 741657983 | 604265833 | 765277099 |
| At end of period | $539145866 | $335980618 | $752161123 | $649905930 | $838231076 |
| **Six months ended 10/31/25 (unaudited)** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| **Change in net assets** |  |  |  |  |  |
| **From operations** |  |  |  |  |  |
| Net investment income (loss) | $1865427 | $1078968 | $746818 | $435150 | $65977 |
| Net realized gain (loss) | 4941566 | 3711104 | 1530396 | 594577 | 13662 |
| Net unrealized gain (loss) | 64363166 | 75925353 | 53418820 | 31047887 | 4905751 |
| Change in net assets from operations | $71170159 | $80715425 | $55696034 | $32077614 | $4985390 |
| Change in net assets from fund share transactions | $(23110657) | $(13780113) | $(818977) | $6583799 | $5081862 |
| Total change in net assets | $48059502 | $66935312 | $54877057 | $38661413 | $10067252 |
| **Net assets** |  |  |  |  |  |
| At beginning of period | 515985480 | 556731866 | 381971962 | 217953647 | 32707030 |
| At end of period | $564044982 | $623667178 | $436849019 | $256615060 | $42774282 |

---

**See Notes to Financial Statements**

Statements of Changes in Net Assets – continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Year ended 4/30/25**<br>**Change in net assets**<br>**From operations** | **MFS Lifetime**<br>**Income Fund**<br>| **MFS Lifetime**<br>**2025 Fund**<br>| **MFS Lifetime**<br>**2030 Fund**<br>| **MFS Lifetime**<br>**2035 Fund**<br>| **MFS Lifetime**<br>**2040 Fund**<br>|
| Net investment income (loss) | $21659783 | $13824545 | $26469817 | $18695567 | $21240739 |
| Net realized gain (loss) | 14170187 | 9936545 | 38651613 | 25447848 | 38621562 |
| Net unrealized gain (loss) | 10314434 | 6425990 | (1109867) | 7616731 | 6889783 |
| Change in net assets from operations | $46144404 | $30187080 | $64011563 | $51760146 | $66752084 |
| Total distributions to shareholders | $(38307709) | $(24215523) | $(57307216) | $(31353909) | $(39423987) |
| Change in net assets from fund share transactions | $(77869927) | $(42290234) | $(50643407) | $(9097772) | $(29249942) |
| Total change in net assets | $(70033232) | $(36318677) | $(43939060) | $11308465 | $(1921845) |
| **Net assets** |  |  |  |  |  |
| At beginning of period | 621544601 | 386577577 | 785597043 | 592957368 | 767198944 |
| At end of period | $551511369 | $350258900 | $741657983 | $604265833 | $765277099 |
| **Year ended 4/30/25** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| **Change in net assets** |  |  |  |  |  |
| **From operations** |  |  |  |  |  |
| Net investment income (loss) | $13336743 | $13263121 | $8793521 | $4888147 | $600049 |
| Net realized gain (loss) | 27001842 | 30198471 | 18361468 | 9445611 | 1146184 |
| Net unrealized gain (loss) | 4890681 | 4922929 | 4443995 | 2549488 | (63445) |
| Change in net assets from operations | $45229266 | $48384521 | $31598984 | $16883246 | $1682788 |
| Total distributions to shareholders | $(24993079) | $(25554001) | $(15990066) | $(8050553) | $(901894) |
| Change in net assets from fund share transactions | $(11672658) | $(14013605) | $8551863 | $16329620 | $13699343 |
| Total change in net assets | $8563529 | $8816915 | $24160781 | $25162313 | $14480237 |
| **Net assets** |  |  |  |  |  |
| At beginning of period | 507421951 | 547914951 | 357811181 | 192791334 | 18226793 |
| At end of period | $515985480 | $556731866 | $381971962 | $217953647 | $32707030 |

---

**See Notes to Financial Statements**

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 semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 | $12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.19 | $0.44 | $0.38 | $0.35 | $0.45 | $0.23 |
| Net realized and unrealized gain (loss) | 0.58 | 0.48 | 0.21 | (0.40) | (1.01) | 1.72 |
| Total from investment operations | $0.77 | $0.92 | $0.59 | $(0.05) | $(0.56) | $1.95 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.18) | $(0.44) | $(0.44) | $(0.29) | $(0.45) | $(0.27) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.18) | $(0.79) | $(0.52) | $(0.49) | $(0.80) | $(0.40) |
| Net asset value, end of period (x) | $12.73 | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 |
| Total return (%) (r)(s)(t)(x) | 6.37(n) | 7.78 | 5.03 | (0.28) | (4.52) | 16.01 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.44(a) | 0.44 | 0.43 | 0.44 | 0.43 | 0.43 |
| Expenses after expense reductions (h) | 0.24(a) | 0.24 | 0.24 | 0.25 | 0.23 | 0.23 |
| Net investment income (loss) (l) | 2.97(a) | 3.53 | 3.17 | 2.90 | 3.28 | 1.77 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $185193 | $185202 | $186276 | $190944 | $166307 | $164096 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime Income Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 | $12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | $0.34 | $0.28 | $0.27 | $0.33 | $0.15 |
| Net realized and unrealized gain (loss) | 0.58 | 0.49 | 0.22 | (0.41) | (1.00) | 1.70 |
| Total from investment operations | $0.72 | $0.83 | $0.50 | $(0.14) | $(0.67) | $1.85 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.13) | $(0.35) | $(0.35) | $(0.20) | $(0.34) | $(0.17) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.13) | $(0.70) | $(0.43) | $(0.40) | $(0.69) | $(0.30) |
| Net asset value, end of period (x) | $12.73 | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 |
| Total return (%) (r)(s)(t)(x) | 5.98(n) | 6.98 | 4.25 | (1.03) | (5.24) | 15.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.19(a) | 1.19 | 1.19 | 1.19 | 1.18 | 1.19 |
| Expenses after expense reductions (h) | 0.99(a) | 0.99 | 1.00 | 1.00 | 0.98 | 0.98 |
| Net investment income (loss) (l) | 2.20(a) | 2.73 | 2.36 | 2.26 | 2.39 | 1.15 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $263 | $431 | $839 | $1647 | $1914 | $3347 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.13 | $12.01 | $11.93 | $12.47 | $13.83 | $12.28 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | $0.34 | $0.29 | $0.25 | $0.34 | $0.15 |
| Net realized and unrealized gain (loss) | 0.59 | 0.48 | 0.22 | (0.39) | (1.01) | 1.70 |
| Total from investment operations | $0.73 | $0.82 | $0.51 | $(0.14) | $(0.67) | $1.85 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.13) | $(0.35) | $(0.35) | $(0.20) | $(0.34) | $(0.17) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.13) | $(0.70) | $(0.43) | $(0.40) | $(0.69) | $(0.30) |
| Net asset value, end of period (x) | $12.73 | $12.13 | $12.01 | $11.93 | $12.47 | $13.83 |
| Total return (%) (r)(s)(t)(x) | 6.07(n) | 6.89 | 4.34 | (1.03) | (5.24) | 15.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.19(a) | 1.19 | 1.19 | 1.20 | 1.18 | 1.19 |
| Expenses after expense reductions (h) | 0.99(a) | 0.99 | 0.99 | 1.00 | 0.98 | 0.98 |
| Net investment income (loss) (l) | 2.22(a) | 2.74 | 2.39 | 2.07 | 2.47 | 1.16 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $12407 | $14121 | $23192 | $39244 | $55415 | $81542 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime Income Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.14 | $12.02 | $11.94 | $12.48 | $13.84 | $12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.20 | $0.47 | $0.41 | $0.37 | $0.49 | $0.28 |
| Net realized and unrealized gain (loss) | 0.60 | 0.47 | 0.22 | (0.39) | (1.02) | 1.70 |
| Total from investment operations | $0.80 | $0.94 | $0.63 | $(0.02) | $(0.53) | $1.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.20) | $(0.47) | $(0.47) | $(0.32) | $(0.48) | $(0.30) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.20) | $(0.82) | $(0.55) | $(0.52) | $(0.83) | $(0.43) |
| Net asset value, end of period (x) | $12.74 | $12.14 | $12.02 | $11.94 | $12.48 | $13.84 |
| Total return (%) (r)(s)(t)(x) | 6.59(n) | 7.95 | 5.38 | (0.03) | (4.28) | 16.30 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.19(a) | 0.19 | 0.19 | 0.19 | 0.18 | 0.18 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 3.23(a) | 3.78 | 3.41 | 3.11 | 3.58 | 2.14 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $44891 | $42870 | $41571 | $43462 | $45108 | $46956 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.16 | $12.03 | $11.96 | $12.49 | $13.85 | $12.30 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | $0.34 | $0.28 | $0.27 | $0.36 | $0.14 |
| Net realized and unrealized gain (loss) | 0.58 | 0.49 | 0.22 | (0.40) | (1.03) | 1.71 |
| Total from investment operations | $0.72 | $0.83 | $0.50 | $(0.13) | $(0.67) | $1.85 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.13) | $(0.35) | $(0.35) | $(0.20) | $(0.34) | $(0.17) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.13) | $(0.70) | $(0.43) | $(0.40) | $(0.69) | $(0.30) |
| Net asset value, end of period (x) | $12.75 | $12.16 | $12.03 | $11.96 | $12.49 | $13.85 |
| Total return (%) (r)(s)(t)(x) | 5.97(n) | 6.97 | 4.25 | (0.94) | (5.23) | 15.15 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.19(a) | 1.19 | 1.18 | 1.19 | 1.18 | 1.19 |
| Expenses after expense reductions (h) | 0.99(a) | 0.99 | 0.99 | 1.00 | 0.98 | 0.98 |
| Net investment income (loss) (l) | 2.22(a) | 2.78 | 2.38 | 2.22 | 2.61 | 1.08 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $2737 | $2583 | $2703 | $2792 | $1779 | $1932 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime Income Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 | $12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.17 | $0.40 | $0.35 | $0.34 | $0.40 | $0.21 |
| Net realized and unrealized gain (loss) | 0.58 | 0.49 | 0.21 | (0.42) | (1.00) | 1.71 |
| Total from investment operations | $0.75 | $0.89 | $0.56 | $(0.08) | $(0.60) | $1.92 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.16) | $(0.41) | $(0.41) | $(0.26) | $(0.41) | $(0.24) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.16) | $(0.76) | $(0.49) | $(0.46) | $(0.76) | $(0.37) |
| Net asset value, end of period (x) | $12.73 | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 |
| Total return (%) (r)(s)(t)(x) | 6.24(n) | 7.51 | 4.77 | (0.53) | (4.76) | 15.73 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.69(a) | 0.69 | 0.69 | 0.69 | 0.68 | 0.69 |
| Expenses after expense reductions (h) | 0.49(a) | 0.49 | 0.49 | 0.50 | 0.48 | 0.48 |
| Net investment income (loss) (l) | 2.72(a) | 3.26 | 2.91 | 2.88 | 2.92 | 1.60 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $20390 | $21432 | $22747 | $27337 | $7981 | $10823 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 | $12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.19 | $0.44 | $0.38 | $0.36 | $0.43 | $0.25 |
| Net realized and unrealized gain (loss) | 0.58 | 0.48 | 0.21 | (0.41) | (0.99) | 1.70 |
| Total from investment operations | $0.77 | $0.92 | $0.59 | $(0.05) | $(0.56) | $1.95 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.18) | $(0.44) | $(0.44) | $(0.29) | $(0.45) | $(0.27) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.18) | $(0.79) | $(0.52) | $(0.49) | $(0.80) | $(0.40) |
| Net asset value, end of period (x) | $12.73 | $12.14 | $12.01 | $11.94 | $12.48 | $13.84 |
| Total return (%) (r)(s)(t)(x) | 6.37(n) | 7.78 | 5.03 | (0.28) | (4.52) | 16.01 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.44(a) | 0.44 | 0.43 | 0.44 | 0.43 | 0.43 |
| Expenses after expense reductions (h) | 0.24(a) | 0.24 | 0.24 | 0.25 | 0.23 | 0.23 |
| Net investment income (loss) (l) | 2.97(a) | 3.53 | 3.17 | 3.00 | 3.13 | 1.90 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $81477 | $87294 | $121320 | $120218 | $61647 | $75909 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime Income Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.13 | $12.01 | $11.94 | $12.48 | $13.84 | $12.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.20 | $0.46 | $0.40 | $0.40 | $0.45 | $0.28 |
| Net realized and unrealized gain (loss) | 0.60 | 0.48 | 0.22 | (0.42) | (0.98) | 1.70 |
| Total from investment operations | $0.80 | $0.94 | $0.62 | $(0.02) | $(0.53) | $1.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.20) | $(0.47) | $(0.47) | $(0.32) | $(0.48) | $(0.30) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.20) | $(0.82) | $(0.55) | $(0.52) | $(0.83) | $(0.43) |
| Net asset value, end of period (x) | $12.73 | $12.13 | $12.01 | $11.94 | $12.48 | $13.84 |
| Total return (%) (r)(s)(t)(x) | 6.59(n) | 7.96 | 5.29 | (0.03) | (4.28) | 16.30 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.19(a) | 0.19 | 0.19 | 0.19 | 0.18 | 0.19 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 3.22(a) | 3.74 | 3.33 | 3.36 | 3.28 | 2.14 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $15356 | $16707 | $18412 | $26707 | $11700 | $31138 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.18 | $12.05 | $11.98 | $12.52 | $13.88 | $12.32 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.21 | $0.48 | $0.43 | $0.42 | $0.50 | $0.30 |
| Net realized and unrealized gain (loss) | 0.58 | 0.49 | 0.21 | (0.43) | (1.02) | 1.71 |
| Total from investment operations | $0.79 | $0.97 | $0.64 | $(0.01) | $(0.52) | $2.01 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $(0.20) | $(0.49) | $(0.49) | $(0.33) | $(0.49) | $(0.32) |
| From net realized gain |  | (0.35) | (0.08) | (0.20) | (0.35) | (0.13) |
| Total distributions declared to shareholders | $(0.20) | $(0.84) | $(0.57) | $(0.53) | $(0.84) | $(0.45) |
| Net asset value, end of period (x) | $12.77 | $12.18 | $12.05 | $11.98 | $12.52 | $13.88 |
| Total return (%) (r)(s)(t)(x) | 6.55(n) | 8.15 | 5.41 | 0.09 | (4.18) | 16.44 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.08(a) | 0.08 | 0.07 | 0.08 | 0.09 | 0.10 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 3.34(a) | 3.88 | 3.55 | 3.54 | 3.61 | 2.24 |
| Portfolio turnover rate | 1(n) | 5 | 9 | 16 | 7 | 12 |
| Net assets at end of period (000 omitted) | $176433 | $180870 | $204485 | $184269 | $81457 | $87750 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime Income Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2025 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.11 | $12.97 | $12.65 | $13.38 | $15.00 | $12.75 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.20 | $0.47 | $0.41 | $0.35 | $0.51 | $0.25 |
| Net realized and unrealized gain (loss) | 0.65 | 0.55 | 0.32 | (0.40) | (1.09) | 2.38 |
| Total from investment operations | $0.85 | $1.02 | $0.73 | $(0.05) | $(0.58) | $2.63 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.49) | $(0.37) | $(0.32) | $(0.53) | $(0.26) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.88) | $(0.41) | $(0.68) | $(1.04) | $(0.38) |
| Net asset value, end of period (x) | $13.96 | $13.11 | $12.97 | $12.65 | $13.38 | $15.00 |
| Total return (%) (r)(s)(t)(x) | 6.48(n) | 7.92 | 5.77 | (0.13) | (4.47) | 20.70 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.47(a) | 0.48 | 0.48 | 0.48 | 0.46 | 0.47 |
| Expenses after expense reductions (h) | 0.24(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 2.95(a) | 3.47 | 3.18 | 2.74 | 3.41 | 1.77 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $29782 | $30416 | $36142 | $23748 | $26794 | $29637 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2025 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.14 | $12.95 | $12.58 | $13.29 | $14.89 | $12.64 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.15 | $0.36 | $0.29 | $0.25 | $0.40 | $0.14 |
| Net realized and unrealized gain (loss) | 0.66 | 0.55 | 0.34 | (0.40) | (1.09) | 2.36 |
| Total from investment operations | $0.81 | $0.91 | $0.63 | $(0.15) | $(0.69) | $2.50 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.33) | $(0.22) | $(0.20) | $(0.40) | $(0.13) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.72) | $(0.26) | $(0.56) | $(0.91) | $(0.25) |
| Net asset value, end of period (x) | $13.95 | $13.14 | $12.95 | $12.58 | $13.29 | $14.89 |
| Total return (%) (r)(s)(t)(x) | 6.16(n) | 7.06 | 5.00 | (0.95) | (5.15) | 19.83 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.22(a) | 1.23 | 1.23 | 1.23 | 1.21 | 1.22 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 2.23(a) | 2.68 | 2.27 | 1.97 | 2.71 | 1.00 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $148 | $256 | $512 | $799 | $1156 | $1447 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $12.93 | $12.80 | $12.46 | $13.20 | $14.80 | $12.58 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.15 | $0.36 | $0.29 | $0.26 | $0.40 | $0.14 |
| Net realized and unrealized gain (loss) | 0.64 | 0.54 | 0.33 | (0.40) | (1.09) | 2.35 |
| Total from investment operations | $0.79 | $0.90 | $0.62 | $(0.14) | $(0.69) | $2.49 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.38) | $(0.24) | $(0.24) | $(0.40) | $(0.15) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.77) | $(0.28) | $(0.60) | $(0.91) | $(0.27) |
| Net asset value, end of period (x) | $13.72 | $12.93 | $12.80 | $12.46 | $13.20 | $14.80 |
| Total return (%) (r)(s)(t)(x) | 6.11(n) | 7.06 | 4.96 | (0.88) | (5.19) | 19.86 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.22(a) | 1.23 | 1.23 | 1.23 | 1.21 | 1.22 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 2.20(a) | 2.72 | 2.28 | 2.07 | 2.74 | 1.03 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $2105 | $2140 | $2766 | $3478 | $3571 | $4618 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2025 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.16 | $13.03 | $12.69 | $13.43 | $15.06 | $12.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.22 | $0.51 | $0.42 | $0.38 | $0.55 | $0.30 |
| Net realized and unrealized gain (loss) | 0.66 | 0.54 | 0.35 | (0.40) | (1.10) | 2.38 |
| Total from investment operations | $0.88 | $1.05 | $0.77 | $(0.02) | $(0.55) | $2.68 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.53) | $(0.39) | $(0.36) | $(0.57) | $(0.29) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.92) | $(0.43) | $(0.72) | $(1.08) | $(0.41) |
| Net asset value, end of period (x) | $14.04 | $13.16 | $13.03 | $12.69 | $13.43 | $15.06 |
| Total return (%) (r)(s)(t)(x) | 6.69(n) | 8.12 | 6.06 | 0.07 | (4.26) | 21.10 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.22(a) | 0.23 | 0.23 | 0.23 | 0.21 | 0.22 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 3.21(a) | 3.75 | 3.30 | 2.99 | 3.68 | 2.08 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $3499 | $3077 | $2846 | $2724 | $4104 | $3131 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.17 | $13.04 | $12.70 | $13.44 | $15.04 | $12.65 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.15 | $0.37 | $0.30 | $0.26 | $0.39 | $0.09 |
| Net realized and unrealized gain (loss) | 0.66 | 0.54 | 0.34 | (0.41) | (1.09) | 2.42 |
| Total from investment operations | $0.81 | $0.91 | $0.64 | $(0.15) | $(0.70) | $2.51 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.39) | $(0.26) | $(0.23) | $(0.39) | $— |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.78) | $(0.30) | $(0.59) | $(0.90) | $(0.12) |
| Net asset value, end of period (x) | $13.98 | $13.17 | $13.04 | $12.70 | $13.44 | $15.04 |
| Total return (%) (r)(s)(t)(x) | 6.15(n) | 7.06 | 4.99 | (0.92) | (5.19) | 19.86 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.22(a) | 1.23 | 1.23 | 1.23 | 1.21 | 1.23 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 2.23(a) | 2.72 | 2.31 | 2.02 | 2.61 | 0.67 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $240 | $337 | $333 | $347 | $310 | $374 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2025 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.08 | $12.96 | $12.61 | $13.35 | $14.95 | $12.69 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.18 | $0.44 | $0.36 | $0.32 | $0.47 | $0.21 |
| Net realized and unrealized gain (loss) | 0.66 | 0.53 | 0.35 | (0.41) | (1.08) | 2.37 |
| Total from investment operations | $0.84 | $0.97 | $0.71 | $(0.09) | $(0.61) | $2.58 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.32) | $(0.29) | $(0.48) | $(0.20) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.85) | $(0.36) | $(0.65) | $(0.99) | $(0.32) |
| Net asset value, end of period (x) | $13.92 | $13.08 | $12.96 | $12.61 | $13.35 | $14.95 |
| Total return (%) (r)(s)(t)(x) | 6.42(n) | 7.54 | 5.60 | (0.48) | (4.64) | 20.43 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.72(a) | 0.73 | 0.73 | 0.73 | 0.71 | 0.73 |
| Expenses after expense reductions (h) | 0.49(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 2.70(a) | 3.25 | 2.80 | 2.51 | 3.15 | 1.49 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $11534 | $11897 | $12648 | $14322 | $16771 | $21994 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.09 | $12.96 | $12.63 | $13.37 | $14.98 | $12.73 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.20 | $0.47 | $0.39 | $0.35 | $0.51 | $0.25 |
| Net realized and unrealized gain (loss) | 0.66 | 0.53 | 0.34 | (0.41) | (1.08) | 2.38 |
| Total from investment operations | $0.86 | $1.00 | $0.73 | $(0.06) | $(0.57) | $2.63 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.48) | $(0.36) | $(0.32) | $(0.53) | $(0.26) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.87) | $(0.40) | $(0.68) | $(1.04) | $(0.38) |
| Net asset value, end of period (x) | $13.95 | $13.09 | $12.96 | $12.63 | $13.37 | $14.98 |
| Total return (%) (r)(s)(t)(x) | 6.57(n) | 7.83 | 5.76 | (0.18) | (4.41) | 20.74 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.47(a) | 0.48 | 0.48 | 0.48 | 0.46 | 0.47 |
| Expenses after expense reductions (h) | 0.24(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 2.95(a) | 3.48 | 3.07 | 2.75 | 3.43 | 1.80 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $79529 | $82363 | $106722 | $100312 | $109420 | $112826 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2025 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.22 | $13.08 | $12.73 | $13.47 | $15.09 | $12.81 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.22 | $0.50 | $0.42 | $0.38 | $0.52 | $0.28 |
| Net realized and unrealized gain (loss) | 0.66 | 0.55 | 0.36 | (0.40) | (1.08) | 2.40 |
| Total from investment operations | $0.88 | $1.05 | $0.78 | $(0.02) | $(0.56) | $2.68 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.52) | $(0.39) | $(0.36) | $(0.55) | $(0.28) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.91) | $(0.43) | $(0.72) | $(1.06) | $(0.40) |
| Net asset value, end of period (x) | $14.10 | $13.22 | $13.08 | $12.73 | $13.47 | $15.09 |
| Total return (%) (r)(s)(t)(x) | 6.66(n) | 8.15 | 6.11 | 0.08 | (4.26) | 21.06 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.22(a) | 0.23 | 0.23 | 0.23 | 0.21 | 0.23 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 3.20(a) | 3.71 | 3.26 | 2.99 | 3.43 | 2.00 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $30325 | $29836 | $29500 | $36419 | $34089 | $82037 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $13.20 | $13.06 | $12.73 | $13.47 | $15.09 | $12.82 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.23 | $0.52 | $0.45 | $0.43 | $0.58 | $0.32 |
| Net realized and unrealized gain (loss) | 0.66 | 0.55 | 0.33 | (0.43) | (1.10) | 2.38 |
| Total from investment operations | $0.89 | $1.07 | $0.78 | $0.00 | $(0.52) | $2.70 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.54) | $(0.41) | $(0.38) | $(0.59) | $(0.31) |
| From net realized gain |  | (0.39) | (0.04) | (0.36) | (0.51) | (0.12) |
| Total distributions declared to shareholders | $— | $(0.93) | $(0.45) | $(0.74) | $(1.10) | $(0.43) |
| Net asset value, end of period (x) | $14.09 | $13.20 | $13.06 | $12.73 | $13.47 | $15.09 |
| Total return (%) (r)(s)(t)(x) | 6.74(n) | 8.32 | 6.12 | 0.24 | (4.06) | 21.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.09(a) | 0.09 | 0.09 | 0.09 | 0.07 | 0.08 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 3.33(a) | 3.87 | 3.48 | 3.34 | 3.88 | 2.22 |
| Portfolio turnover rate | 3(n) | 9 | 17 | 18 | 14 | 24 |
| Net assets at end of period (000 omitted) | $178819 | $189936 | $195108 | $158548 | $217171 | $228469 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2025 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2030 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.75 | $15.70 | $15.08 | $16.03 | $18.20 | $14.61 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.21 | $0.53 | $0.42 | $0.40 | $0.72 | $0.26 |
| Net realized and unrealized gain (loss) | 1.10 | 0.76 | 0.79 | (0.45) | (1.34) | 3.96 |
| Total from investment operations | $1.31 | $1.29 | $1.21 | $(0.05) | $(0.62) | $4.22 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.55) | $(0.39) | $(0.37) | $(0.73) | $(0.27) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.24) | $(0.59) | $(0.90) | $(1.55) | $(0.63) |
| Net asset value, end of period (x) | $17.06 | $15.75 | $15.70 | $15.08 | $16.03 | $18.20 |
| Total return (%) (r)(s)(t)(x) | 8.32(n) | 8.27 | 8.06 | (0.02) | (4.25) | 29.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.43(a) | 0.44 | 0.44 | 0.45 | 0.44 | 0.44 |
| Expenses after expense reductions (h) | 0.24(a) | 0.24 | 0.25 | 0.25 | 0.25 | 0.24 |
| Net investment income (loss) (l) | 2.48(a) | 3.25 | 2.76 | 2.62 | 3.95 | 1.56 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $96623 | $91791 | $91172 | $78198 | $78464 | $81398 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2030 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.68 | $15.55 | $14.92 | $15.82 | $17.96 | $14.41 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | $0.39 | $0.30 | $0.27 | $0.55 | $0.13 |
| Net realized and unrealized gain (loss) | 1.09 | 0.77 | 0.77 | (0.43) | (1.30) | 3.91 |
| Total from investment operations | $1.23 | $1.16 | $1.07 | $(0.16) | $(0.75) | $4.04 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.34) | $(0.24) | $(0.21) | $(0.57) | $(0.13) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.03) | $(0.44) | $(0.74) | $(1.39) | $(0.49) |
| Net asset value, end of period (x) | $16.91 | $15.68 | $15.55 | $14.92 | $15.82 | $17.96 |
| Total return (%) (r)(s)(t)(x) | 7.84(n) | 7.47 | 7.19 | (0.74) | (4.98) | 28.24 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.18(a) | 1.19 | 1.19 | 1.20 | 1.19 | 1.19 |
| Expenses after expense reductions (h) | 0.99(a) | 0.99 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | 1.71(a) | 2.41 | 1.95 | 1.82 | 3.09 | 0.82 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $901 | $1142 | $2224 | $3104 | $4398 | $6394 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.41 | $15.38 | $14.78 | $15.69 | $17.84 | $14.31 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | $0.40 | $0.30 | $0.26 | $0.56 | $0.14 |
| Net realized and unrealized gain (loss) | 1.08 | 0.74 | 0.76 | (0.42) | (1.30) | 3.87 |
| Total from investment operations | $1.22 | $1.14 | $1.06 | $(0.16) | $(0.74) | $4.01 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.42) | $(0.26) | $(0.22) | $(0.59) | $(0.12) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.11) | $(0.46) | $(0.75) | $(1.41) | $(0.48) |
| Net asset value, end of period (x) | $16.63 | $15.41 | $15.38 | $14.78 | $15.69 | $17.84 |
| Total return (%) (r)(s)(t)(x) | 7.92(n) | 7.44 | 7.21 | (0.76) | (4.97) | 28.24 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.18(a) | 1.19 | 1.19 | 1.20 | 1.19 | 1.19 |
| Expenses after expense reductions (h) | 0.98(a) | 0.99 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | 1.72(a) | 2.48 | 1.96 | 1.78 | 3.15 | 0.85 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $6557 | $7121 | $7387 | $8025 | $10573 | $12826 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2030 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.86 | $15.81 | $15.17 | $16.12 | $18.30 | $14.69 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.23 | $0.59 | $0.46 | $0.43 | $0.85 | $0.31 |
| Net realized and unrealized gain (loss) | 1.11 | 0.75 | 0.80 | (0.45) | (1.43) | 3.98 |
| Total from investment operations | $1.34 | $1.34 | $1.26 | $(0.02) | $(0.58) | $4.29 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.60) | $(0.42) | $(0.40) | $(0.78) | $(0.32) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.29) | $(0.62) | $(0.93) | $(1.60) | $(0.68) |
| Net asset value, end of period (x) | $17.20 | $15.86 | $15.81 | $15.17 | $16.12 | $18.30 |
| Total return (%) (r)(s)(t)(x) | 8.45(n) | 8.52 | 8.35 | 0.23 | (4.02) | 29.48 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.18(a) | 0.19 | 0.19 | 0.20 | 0.19 | 0.19 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.73(a) | 3.62 | 2.98 | 2.81 | 4.65 | 1.86 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $9080 | $8189 | $5535 | $6146 | $6552 | $6274 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.62 | $15.59 | $14.97 | $15.89 | $18.05 | $14.43 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.14 | $0.41 | $0.30 | $0.28 | $0.58 | $0.11 |
| Net realized and unrealized gain (loss) | 1.10 | 0.74 | 0.78 | (0.44) | (1.34) | 3.94 |
| Total from investment operations | $1.24 | $1.15 | $1.08 | $(0.16) | $(0.76) | $4.05 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.43) | $(0.26) | $(0.23) | $(0.58) | $(0.07) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.12) | $(0.46) | $(0.76) | $(1.40) | $(0.43) |
| Net asset value, end of period (x) | $16.86 | $15.62 | $15.59 | $14.97 | $15.89 | $18.05 |
| Total return (%) (r)(s)(t)(x) | 7.94(n) | 7.40 | 7.24 | (0.73) | (5.00) | 28.21 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.18(a) | 1.19 | 1.19 | 1.20 | 1.19 | 1.20 |
| Expenses after expense reductions (h) | 0.99(a) | 0.99 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | 1.73(a) | 2.52 | 1.95 | 1.83 | 3.21 | 0.66 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $3460 | $3103 | $3055 | $3347 | $4148 | $5636 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2030 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.61 | $15.57 | $14.94 | $15.88 | $18.04 | $14.47 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.18 | $0.49 | $0.37 | $0.35 | $0.65 | $0.20 |
| Net realized and unrealized gain (loss) | 1.09 | 0.75 | 0.80 | (0.44) | (1.31) | 3.94 |
| Total from investment operations | $1.27 | $1.24 | $1.17 | $(0.09) | $(0.66) | $4.14 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.34) | $(0.32) | $(0.68) | $(0.21) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.20) | $(0.54) | $(0.85) | $(1.50) | $(0.57) |
| Net asset value, end of period (x) | $16.88 | $15.61 | $15.57 | $14.94 | $15.88 | $18.04 |
| Total return (%) (r)(s)(t)(x) | 8.14(n) | 7.99 | 7.82 | (0.26) | (4.50) | 28.84 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.68(a) | 0.69 | 0.69 | 0.70 | 0.69 | 0.70 |
| Expenses after expense reductions (h) | 0.49(a) | 0.49 | 0.50 | 0.50 | 0.50 | 0.49 |
| Net investment income (loss) (l) | 2.21(a) | 3.01 | 2.45 | 2.33 | 3.64 | 1.24 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $33239 | $34541 | $35220 | $46256 | $51968 | $60402 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.69 | $15.65 | $15.03 | $15.98 | $18.15 | $14.57 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.20 | $0.53 | $0.42 | $0.39 | $0.69 | $0.26 |
| Net realized and unrealized gain (loss) | 1.11 | 0.75 | 0.79 | (0.44) | (1.31) | 3.95 |
| Total from investment operations | $1.31 | $1.28 | $1.21 | $(0.05) | $(0.62) | $4.21 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.55) | $(0.39) | $(0.37) | $(0.73) | $(0.27) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.24) | $(0.59) | $(0.90) | $(1.55) | $(0.63) |
| Net asset value, end of period (x) | $17.00 | $15.69 | $15.65 | $15.03 | $15.98 | $18.15 |
| Total return (%) (r)(s)(t)(x) | 8.35(n) | 8.21 | 8.06 | (0.01) | (4.27) | 29.18 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.43(a) | 0.44 | 0.44 | 0.45 | 0.44 | 0.44 |
| Expenses after expense reductions (h) | 0.24(a) | 0.24 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 2.46(a) | 3.24 | 2.73 | 2.59 | 3.84 | 1.58 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $185300 | $195870 | $220766 | $199271 | $196297 | $196178 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2030 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.93 | $15.87 | $15.22 | $16.17 | $18.34 | $14.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.23 | $0.57 | $0.44 | $0.44 | $0.71 | $0.30 |
| Net realized and unrealized gain (loss) | 1.11 | 0.77 | 0.83 | (0.46) | (1.29) | 4.01 |
| Total from investment operations | $1.34 | $1.34 | $1.27 | $(0.02) | $(0.58) | $4.31 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.59) | $(0.42) | $(0.40) | $(0.77) | $(0.31) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.28) | $(0.62) | $(0.93) | $(1.59) | $(0.67) |
| Net asset value, end of period (x) | $17.27 | $15.93 | $15.87 | $15.22 | $16.17 | $18.34 |
| Total return (%) (r)(s)(t)(x) | 8.41(n) | 8.51 | 8.36 | 0.24 | (4.03) | 29.58 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.18(a) | 0.19 | 0.19 | 0.20 | 0.19 | 0.20 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.73(a) | 3.46 | 2.83 | 2.83 | 3.87 | 1.80 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $40825 | $42040 | $38081 | $59570 | $58095 | $123740 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.90 | $15.84 | $15.20 | $16.15 | $18.33 | $14.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.24 | $0.60 | $0.49 | $0.49 | $0.79 | $0.34 |
| Net realized and unrealized gain (loss) | 1.11 | 0.77 | 0.79 | (0.48) | (1.35) | 3.98 |
| Total from investment operations | $1.35 | $1.37 | $1.28 | $0.01 | $(0.56) | $4.32 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.62) | $(0.44) | $(0.43) | $(0.80) | $(0.33) |
| From net realized gain |  | (0.69) | (0.20) | (0.53) | (0.82) | (0.36) |
| Total distributions declared to shareholders | $— | $(1.31) | $(0.64) | $(0.96) | $(1.62) | $(0.69) |
| Net asset value, end of period (x) | $17.25 | $15.90 | $15.84 | $15.20 | $16.15 | $18.33 |
| Total return (%) (r)(s)(t)(x) | 8.49(n) | 8.68 | 8.49 | 0.40 | (3.92) | 29.71 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.05(a) | 0.06 | 0.06 | 0.06 | 0.05 | 0.06 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.86(a) | 3.62 | 3.14 | 3.17 | 4.34 | 2.01 |
| Portfolio turnover rate | 2(n) | 9 | 14 | 18 | 15 | 27 |
| Net assets at end of period (000 omitted) | $376176 | $357861 | $382157 | $288629 | $316077 | $300098 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2030 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2035 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.51 | $16.96 | $15.67 | $16.63 | $18.63 | $13.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.15 | $0.51 | $0.37 | $0.38 | $0.88 | $0.23 |
| Net realized and unrealized gain (loss) | 1.76 | 0.96 | 1.36 | (0.40) | (1.44) | 5.04 |
| Total from investment operations | $1.91 | $1.47 | $1.73 | $(0.02) | $(0.56) | $5.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.52) | $(0.33) | $(0.37) | $(0.86) | $(0.23) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.92) | $(0.44) | $(0.94) | $(1.44) | $(0.43) |
| Net asset value, end of period (x) | $19.42 | $17.51 | $16.96 | $15.67 | $16.63 | $18.63 |
| Total return (%) (r)(s)(t)(x) | 10.91(n) | 8.65 | 11.13 | 0.27 | (3.84) | 38.48 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.44(a) | 0.46 | 0.46 | 0.47 | 0.47 | 0.48 |
| Expenses after expense reductions (h) | 0.24(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.57(a) | 2.86 | 2.29 | 2.44 | 4.67 | 1.41 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $52294 | $47516 | $42511 | $32421 | $29272 | $27770 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2035 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.51 | $16.91 | $15.59 | $16.52 | $18.50 | $13.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.37 | $0.23 | $0.26 | $0.69 | $0.11 |
| Net realized and unrealized gain (loss) | 1.77 | 0.96 | 1.36 | (0.39) | (1.39) | 4.99 |
| Total from investment operations | $1.85 | $1.33 | $1.59 | $(0.13) | $(0.70) | $5.10 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.33) | $(0.16) | $(0.23) | $(0.70) | $(0.10) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.73) | $(0.27) | $(0.80) | $(1.28) | $(0.30) |
| Net asset value, end of period (x) | $19.36 | $17.51 | $16.91 | $15.59 | $16.52 | $18.50 |
| Total return (%) (r)(s)(t)(x) | 10.57(n) | 7.85 | 10.24 | (0.48) | (4.53) | 37.44 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.19(a) | 1.21 | 1.22 | 1.22 | 1.22 | 1.23 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.81(a) | 2.06 | 1.43 | 1.66 | 3.72 | 0.65 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $276 | $334 | $697 | $1067 | $1370 | $1597 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.20 | $16.66 | $15.42 | $16.40 | $18.38 | $13.62 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.36 | $0.24 | $0.27 | $0.69 | $0.10 |
| Net realized and unrealized gain (loss) | 1.73 | 0.95 | 1.33 | (0.41) | (1.37) | 4.97 |
| Total from investment operations | $1.81 | $1.31 | $1.57 | $(0.14) | $(0.68) | $5.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.37) | $(0.22) | $(0.27) | $(0.72) | $(0.11) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.77) | $(0.33) | $(0.84) | $(1.30) | $(0.31) |
| Net asset value, end of period (x) | $19.01 | $17.20 | $16.66 | $15.42 | $16.40 | $18.38 |
| Total return (%) (r)(s)(t)(x) | 10.52(n) | 7.87 | 10.27 | (0.55) | (4.50) | 37.40 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.19(a) | 1.21 | 1.21 | 1.22 | 1.22 | 1.23 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.82(a) | 2.07 | 1.52 | 1.74 | 3.72 | 0.63 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $5561 | $5367 | $5285 | $4272 | $3413 | $3514 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2035 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.57 | $17.02 | $15.72 | $16.69 | $18.68 | $13.82 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.17 | $0.56 | $0.42 | $0.45 | $0.88 | $0.27 |
| Net realized and unrealized gain (loss) | 1.78 | 0.95 | 1.36 | (0.44) | (1.38) | 5.05 |
| Total from investment operations | $1.95 | $1.51 | $1.78 | $0.01 | $(0.50) | $5.32 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.56) | $(0.37) | $(0.41) | $(0.91) | $(0.26) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.96) | $(0.48) | $(0.98) | $(1.49) | $(0.46) |
| Net asset value, end of period (x) | $19.52 | $17.57 | $17.02 | $15.72 | $16.69 | $18.68 |
| Total return (%) (r)(s)(t)(x) | 11.10(n) | 8.88 | 11.44 | 0.48 | (3.55) | 38.83 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.19(a) | 0.21 | 0.21 | 0.22 | 0.22 | 0.23 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.81(a) | 3.09 | 2.54 | 2.83 | 4.69 | 1.66 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $9450 | $8645 | $8302 | $1953 | $1365 | $1267 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.42 | $16.88 | $15.61 | $16.59 | $18.59 | $13.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.38 | $0.24 | $0.26 | $0.72 | $(0.01) |
| Net realized and unrealized gain (loss) | 1.76 | 0.95 | 1.35 | (0.40) | (1.42) | 5.10 |
| Total from investment operations | $1.84 | $1.33 | $1.59 | $(0.14) | $(0.70) | $5.09 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.39) | $(0.21) | $(0.27) | $(0.72) | $— |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.79) | $(0.32) | $(0.84) | $(1.30) | $(0.20) |
| Net asset value, end of period (x) | $19.26 | $17.42 | $16.88 | $15.61 | $16.59 | $18.59 |
| Total return (%) (r)(s)(t)(x) | 10.56(n) | 7.85 | 10.25 | (0.50) | (4.52) | 37.27 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.19(a) | 1.21 | 1.21 | 1.22 | 1.22 | 1.24 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.81(a) | 2.11 | 1.46 | 1.64 | 3.84 | (0.05) |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $1345 | $1358 | $1229 | $998 | $932 | $470 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2035 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.55 | $16.98 | $15.68 | $16.64 | $18.61 | $13.75 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.12 | $0.47 | $0.32 | $0.34 | $0.75 | $0.16 |
| Net realized and unrealized gain (loss) | 1.78 | 0.96 | 1.37 | (0.41) | (1.35) | 5.04 |
| Total from investment operations | $1.90 | $1.43 | $1.69 | $(0.07) | $(0.60) | $5.20 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.28) | $(0.32) | $(0.79) | $(0.14) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.86) | $(0.39) | $(0.89) | $(1.37) | $(0.34) |
| Net asset value, end of period (x) | $19.45 | $17.55 | $16.98 | $15.68 | $16.64 | $18.61 |
| Total return (%) (r)(s)(t)(x) | 10.83(n) | 8.42 | 10.85 | (0.05) | (4.01) | 38.06 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.69(a) | 0.71 | 0.72 | 0.72 | 0.72 | 0.74 |
| Expenses after expense reductions (h) | 0.49(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 1.31(a) | 2.62 | 1.98 | 2.19 | 4.01 | 0.97 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $13926 | $13189 | $14018 | $14659 | $17075 | $20783 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.55 | $16.99 | $15.69 | $16.65 | $18.64 | $13.80 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.15 | $0.51 | $0.36 | $0.38 | $0.83 | $0.23 |
| Net realized and unrealized gain (loss) | 1.78 | 0.96 | 1.38 | (0.40) | (1.38) | 5.04 |
| Total from investment operations | $1.93 | $1.47 | $1.74 | $(0.02) | $(0.55) | $5.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.33) | $(0.37) | $(0.86) | $(0.23) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.91) | $(0.44) | $(0.94) | $(1.44) | $(0.43) |
| Net asset value, end of period (x) | $19.48 | $17.55 | $16.99 | $15.69 | $16.65 | $18.64 |
| Total return (%) (r)(s)(t)(x) | 11.00(n) | 8.65 | 11.14 | 0.24 | (3.81) | 38.44 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.44(a) | 0.46 | 0.46 | 0.47 | 0.47 | 0.48 |
| Expenses after expense reductions (h) | 0.24(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.56(a) | 2.82 | 2.24 | 2.41 | 4.41 | 1.40 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $162555 | $155985 | $177887 | $140851 | $142758 | $141555 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2035 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.73 | $17.15 | $15.81 | $16.78 | $18.76 | $13.87 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.17 | $0.54 | $0.35 | $0.42 | $0.78 | $0.25 |
| Net realized and unrealized gain (loss) | 1.79 | 1.00 | 1.45 | (0.41) | (1.29) | 5.09 |
| Total from investment operations | $1.96 | $1.54 | $1.80 | $0.01 | $(0.51) | $5.34 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.56) | $(0.35) | $(0.41) | $(0.89) | $(0.25) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.96) | $(0.46) | $(0.98) | $(1.47) | $(0.45) |
| Net asset value, end of period (x) | $19.69 | $17.73 | $17.15 | $15.81 | $16.78 | $18.76 |
| Total return (%) (r)(s)(t)(x) | 11.05(n) | 8.97 | 11.45 | 0.44 | (3.56) | 38.82 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.19(a) | 0.21 | 0.22 | 0.22 | 0.22 | 0.23 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.81(a) | 2.99 | 2.16 | 2.65 | 4.12 | 1.56 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $27066 | $25267 | $27498 | $45521 | $39766 | $89097 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $17.69 | $17.12 | $15.80 | $16.77 | $18.76 | $13.87 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.19 | $0.59 | $0.44 | $0.50 | $0.94 | $0.31 |
| Net realized and unrealized gain (loss) | 1.78 | 0.97 | 1.38 | (0.47) | (1.42) | 5.07 |
| Total from investment operations | $1.97 | $1.56 | $1.82 | $0.03 | $(0.48) | $5.38 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.59) | $(0.39) | $(0.43) | $(0.93) | $(0.29) |
| From net realized gain |  | (0.40) | (0.11) | (0.57) | (0.58) | (0.20) |
| Total distributions declared to shareholders | $— | $(0.99) | $(0.50) | $(1.00) | $(1.51) | $(0.49) |
| Net asset value, end of period (x) | $19.66 | $17.69 | $17.12 | $15.80 | $16.77 | $18.76 |
| Total return (%) (r)(s)(t)(x) | 11.14(n) | 9.09 | 11.59 | 0.61 | (3.42) | 39.08 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.06(a) | 0.07 | 0.07 | 0.07 | 0.07 | 0.09 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.95(a) | 3.26 | 2.66 | 3.13 | 4.97 | 1.86 |
| Portfolio turnover rate | 6(n) | 14 | 11 | 24 | 18 | 28 |
| Net assets at end of period (000 omitted) | $377431 | $346605 | $315531 | $223670 | $237753 | $206449 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2035 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2040 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.27 | $18.65 | $17.01 | $18.03 | $20.33 | $14.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.51 | $0.34 | $0.39 | $0.94 | $0.21 |
| Net realized and unrealized gain (loss) | 2.48 | 1.11 | 1.91 | (0.39) | (1.48) | 5.86 |
| Total from investment operations | $2.56 | $1.62 | $2.25 | $0.00(w) | $(0.54) | $6.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.52) | $(0.31) | $(0.39) | $(0.97) | $(0.22) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(1.00) | $(0.61) | $(1.02) | $(1.76) | $(0.53) |
| Net asset value, end of period (x) | $21.83 | $19.27 | $18.65 | $17.01 | $18.03 | $20.33 |
| Total return (%) (r)(s)(t)(x) | 13.28(n) | 8.63 | 13.33 | 0.39 | (3.60) | 41.38 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.43(a) | 0.45 | 0.45 | 0.46 | 0.45 | 0.46 |
| Expenses after expense reductions (h) | 0.24(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.24 |
| Net investment income (loss) (l) | 0.80(a) | 2.58 | 1.89 | 2.29 | 4.60 | 1.21 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $82361 | $73805 | $67188 | $51443 | $50245 | $56524 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2040 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.27 | $18.61 | $16.93 | $17.92 | $20.20 | $14.68 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.00 | $0.34 | $0.18 | $0.26 | $0.78 | $0.08 |
| Net realized and unrealized gain (loss) | 2.48 | 1.12 | 1.93 | (0.39) | (1.48) | 5.81 |
| Total from investment operations | $2.48 | $1.46 | $2.11 | $(0.13) | $(0.70) | $5.89 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.32) | $(0.13) | $(0.23) | $(0.79) | $(0.06) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(0.80) | $(0.43) | $(0.86) | $(1.58) | $(0.37) |
| Net asset value, end of period (x) | $21.75 | $19.27 | $18.61 | $16.93 | $17.92 | $20.20 |
| Total return (%) (r)(s)(t)(x) | 12.87(n) | 7.80 | 12.50 | (0.40) | (4.34) | 40.36 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.18(a) | 1.20 | 1.20 | 1.21 | 1.20 | 1.21 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | 0.03(a) | 1.73 | 1.04 | 1.52 | 3.85 | 0.44 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $668 | $956 | $1381 | $1972 | $2641 | $3527 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $18.82 | $18.23 | $16.64 | $17.64 | $19.94 | $14.48 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.34 | $0.20 | $0.26 | $0.77 | $0.08 |
| Net realized and unrealized gain (loss) | 2.41 | 1.09 | 1.86 | (0.37) | (1.46) | 5.73 |
| Total from investment operations | $2.42 | $1.43 | $2.06 | $(0.11) | $(0.69) | $5.81 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.36) | $(0.17) | $(0.26) | $(0.82) | $(0.04) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(0.84) | $(0.47) | $(0.89) | $(1.61) | $(0.35) |
| Net asset value, end of period (x) | $21.24 | $18.82 | $18.23 | $16.64 | $17.64 | $19.94 |
| Total return (%) (r)(s)(t)(x) | 12.86(n) | 7.80 | 12.46 | (0.30) | (4.40) | 40.39 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.18(a) | 1.20 | 1.20 | 1.21 | 1.20 | 1.22 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.06(a) | 1.75 | 1.13 | 1.57 | 3.84 | 0.48 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $5832 | $5907 | $6208 | $6747 | $7809 | $8727 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2040 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.44 | $18.81 | $17.15 | $18.17 | $20.49 | $14.91 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.11 | $0.56 | $0.40 | $0.47 | $1.04 | $0.28 |
| Net realized and unrealized gain (loss) | 2.50 | 1.12 | 1.91 | (0.42) | (1.54) | 5.88 |
| Total from investment operations | $2.61 | $1.68 | $2.31 | $0.05 | $(0.50) | $6.16 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.57) | $(0.35) | $(0.44) | $(1.03) | $(0.27) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(1.05) | $(0.65) | $(1.07) | $(1.82) | $(0.58) |
| Net asset value, end of period (x) | $22.05 | $19.44 | $18.81 | $17.15 | $18.17 | $20.49 |
| Total return (%) (r)(s)(t)(x) | 13.43(n) | 8.88 | 13.60 | 0.68 | (3.41) | 41.67 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.18(a) | 0.20 | 0.20 | 0.21 | 0.20 | 0.21 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.05(a) | 2.80 | 2.19 | 2.75 | 5.06 | 1.57 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $16497 | $14339 | $13391 | $7846 | $5129 | $3870 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.06 | $18.46 | $16.84 | $17.82 | $20.13 | $14.61 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.00 | $0.35 | $0.19 | $0.25 | $0.79 | $0.05 |
| Net realized and unrealized gain (loss) | 2.46 | 1.10 | 1.90 | (0.37) | (1.48) | 5.81 |
| Total from investment operations | $2.46 | $1.45 | $2.09 | $(0.12) | $(0.69) | $5.86 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.37) | $(0.17) | $(0.23) | $(0.83) | $(0.03) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(0.85) | $(0.47) | $(0.86) | $(1.62) | $(0.34) |
| Net asset value, end of period (x) | $21.52 | $19.06 | $18.46 | $16.84 | $17.82 | $20.13 |
| Total return (%) (r)(s)(t)(x) | 12.91(n) | 7.82 | 12.46 | (0.35) | (4.36) | 40.32 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.18(a) | 1.20 | 1.20 | 1.21 | 1.20 | 1.22 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.05(a) | 1.80 | 1.07 | 1.46 | 3.90 | 0.29 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $3124 | $3135 | $3012 | $3063 | $4001 | $3965 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2040 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.15 | $18.53 | $16.90 | $17.91 | $20.21 | $14.70 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.06 | $0.45 | $0.28 | $0.34 | $0.87 | $0.16 |
| Net realized and unrealized gain (loss) | 2.46 | 1.11 | 1.91 | (0.38) | (1.46) | 5.82 |
| Total from investment operations | $2.52 | $1.56 | $2.19 | $(0.04) | $(0.59) | $5.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.26) | $(0.34) | $(0.92) | $(0.16) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(0.94) | $(0.56) | $(0.97) | $(1.71) | $(0.47) |
| Net asset value, end of period (x) | $21.67 | $19.15 | $18.53 | $16.90 | $17.91 | $20.21 |
| Total return (%) (r)(s)(t)(x) | 13.16(n) | 8.40 | 13.03 | 0.14 | (3.89) | 40.98 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.68(a) | 0.70 | 0.70 | 0.71 | 0.70 | 0.72 |
| Expenses after expense reductions (h) | 0.49(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.55(a) | 2.29 | 1.59 | 2.00 | 4.26 | 0.90 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $42479 | $38622 | $40651 | $40810 | $44155 | $53097 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.26 | $18.64 | $17.00 | $18.02 | $20.33 | $14.80 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.50 | $0.33 | $0.39 | $0.94 | $0.22 |
| Net realized and unrealized gain (loss) | 2.49 | 1.11 | 1.92 | (0.39) | (1.48) | 5.84 |
| Total from investment operations | $2.57 | $1.61 | $2.25 | $0.00(w) | $(0.54) | $6.06 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.31) | $(0.39) | $(0.98) | $(0.22) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(0.99) | $(0.61) | $(1.02) | $(1.77) | $(0.53) |
| Net asset value, end of period (x) | $21.83 | $19.26 | $18.64 | $17.00 | $18.02 | $20.33 |
| Total return (%) (r)(s)(t)(x) | 13.34(n) | 8.61 | 13.31 | 0.39 | (3.63) | 41.32 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.43(a) | 0.45 | 0.45 | 0.46 | 0.45 | 0.46 |
| Expenses after expense reductions (h) | 0.24(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.80(a) | 2.53 | 1.86 | 2.27 | 4.60 | 1.26 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $203493 | $192893 | $215273 | $176070 | $171589 | $156544 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2040 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.57 | $18.92 | $17.24 | $18.26 | $20.56 | $14.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.11 | $0.54 | $0.35 | $0.43 | $0.91 | $0.25 |
| Net realized and unrealized gain (loss) | 2.52 | 1.15 | 1.97 | (0.39) | (1.40) | 5.93 |
| Total from investment operations | $2.63 | $1.69 | $2.32 | $0.04 | $(0.49) | $6.18 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.56) | $(0.34) | $(0.43) | $(1.02) | $(0.25) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(1.04) | $(0.64) | $(1.06) | $(1.81) | $(0.56) |
| Net asset value, end of period (x) | $22.20 | $19.57 | $18.92 | $17.24 | $18.26 | $20.56 |
| Total return (%) (r)(s)(t)(x) | 13.44(n) | 8.90 | 13.58 | 0.64 | (3.38) | 41.74 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.18(a) | 0.20 | 0.20 | 0.21 | 0.20 | 0.22 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.05(a) | 2.68 | 1.95 | 2.50 | 4.36 | 1.40 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $44612 | $40946 | $41884 | $51695 | $41621 | $105822 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.54 | $18.89 | $17.22 | $18.24 | $20.55 | $14.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.13 | $0.58 | $0.41 | $0.51 | $1.06 | $0.31 |
| Net realized and unrealized gain (loss) | 2.51 | 1.14 | 1.93 | (0.44) | (1.52) | 5.89 |
| Total from investment operations | $2.64 | $1.72 | $2.34 | $0.07 | $(0.46) | $6.20 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.59) | $(0.37) | $(0.46) | $(1.06) | $(0.28) |
| From net realized gain |  | (0.48) | (0.30) | (0.63) | (0.79) | (0.31) |
| Total distributions declared to shareholders | $— | $(1.07) | $(0.67) | $(1.09) | $(1.85) | $(0.59) |
| Net asset value, end of period (x) | $22.18 | $19.54 | $18.89 | $17.22 | $18.24 | $20.55 |
| Total return (%) (r)(s)(t)(x) | 13.51(n) | 9.08 | 13.72 | 0.80 | (3.24) | 41.92 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.05(a) | 0.06 | 0.06 | 0.07 | 0.06 | 0.08 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.18(a) | 2.90 | 2.30 | 2.98 | 5.12 | 1.69 |
| Portfolio turnover rate | 4(n) | 13 | 9 | 18 | 14 | 27 |
| Net assets at end of period (000 omitted) | $439165 | $394674 | $378212 | $273761 | $243550 | $221571 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2040 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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.

(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 semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.18 | $18.49 | $16.73 | $17.72 | $19.84 | $14.08 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.05 | $0.46 | $0.30 | $0.36 | $0.97 | $0.19 |
| Net realized and unrealized gain (loss) | 2.63 | 1.15 | 2.01 | (0.36) | (1.46) | 5.97 |
| Total from investment operations | $2.68 | $1.61 | $2.31 | $0.00 | $(0.49) | $6.16 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.28) | $(0.36) | $(0.98) | $(0.19) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.92) | $(0.55) | $(0.99) | $(1.63) | $(0.40) |
| Net asset value, end of period (x) | $21.86 | $19.18 | $18.49 | $16.73 | $17.72 | $19.84 |
| Total return (%) (r)(s)(t)(x) | 13.97(n) | 8.65 | 13.87 | 0.37 | (3.41) | 44.10 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.45(a) | 0.48 | 0.48 | 0.50 | 0.49 | 0.51 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.45(a) | 2.32 | 1.69 | 2.14 | 4.83 | 1.09 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $38947 | $36371 | $34162 | $23665 | $19763 | $18980 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2045 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.16 | $18.42 | $16.64 | $17.60 | $19.71 | $14.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.03) | $0.30 | $0.14 | $0.23 | $0.79 | $0.05 |
| Net realized and unrealized gain (loss) | 2.63 | 1.16 | 2.01 | (0.35) | (1.44) | 5.93 |
| Total from investment operations | $2.60 | $1.46 | $2.15 | $(0.12) | $(0.65) | $5.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.26) | $(0.10) | $(0.21) | $(0.81) | $(0.06) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.72) | $(0.37) | $(0.84) | $(1.46) | $(0.27) |
| Net asset value, end of period (x) | $21.76 | $19.16 | $18.42 | $16.64 | $17.60 | $19.71 |
| Total return (%) (r)(s)(t)(x) | 13.57(n) | 7.86 | 12.99 | (0.36) | (4.13) | 42.95 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.20(a) | 1.22 | 1.23 | 1.25 | 1.24 | 1.26 |
| Expenses after expense reductions (h) | 1.00(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.30)(a) | 1.53 | 0.80 | 1.39 | 3.98 | 0.30 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $212 | $264 | $435 | $676 | $736 | $930 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $18.88 | $18.20 | $16.49 | $17.50 | $19.62 | $13.91 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.03) | $0.30 | $0.15 | $0.25 | $0.78 | $0.05 |
| Net realized and unrealized gain (loss) | 2.59 | 1.15 | 1.98 | (0.38) | (1.42) | 5.90 |
| Total from investment operations | $2.56 | $1.45 | $2.13 | $(0.13) | $(0.64) | $5.95 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.31) | $(0.15) | $(0.25) | $(0.83) | $(0.03) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.77) | $(0.42) | $(0.88) | $(1.48) | $(0.24) |
| Net asset value, end of period (x) | $21.44 | $18.88 | $18.20 | $16.49 | $17.50 | $19.62 |
| Total return (%) (r)(s)(t)(x) | 13.56(n) | 7.87 | 12.99 | (0.38) | (4.13) | 43.01 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.20(a) | 1.22 | 1.23 | 1.25 | 1.24 | 1.27 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | (0.29)(a) | 1.56 | 0.88 | 1.52 | 3.93 | 0.30 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $3170 | $3064 | $3204 | $2642 | $2027 | $1943 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2045 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.32 | $18.61 | $16.84 | $17.82 | $19.94 | $14.15 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.50 | $0.35 | $0.39 | $1.01 | $0.24 |
| Net realized and unrealized gain (loss) | 2.64 | 1.18 | 2.01 | (0.35) | (1.45) | 6.00 |
| Total from investment operations | $2.72 | $1.68 | $2.36 | $0.04 | $(0.44) | $6.24 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.32) | $(0.39) | $(1.03) | $(0.24) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.97) | $(0.59) | $(1.02) | $(1.68) | $(0.45) |
| Net asset value, end of period (x) | $22.04 | $19.32 | $18.61 | $16.84 | $17.82 | $19.94 |
| Total return (%) (r)(s)(t)(x) | 14.08(n) | 8.96 | 14.11 | 0.66 | (3.17) | 44.43 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.20(a) | 0.22 | 0.22 | 0.25 | 0.24 | 0.25 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.71(a) | 2.54 | 1.98 | 2.32 | 5.03 | 1.37 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $13699 | $12335 | $11779 | $3190 | $2458 | $2145 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.09 | $18.41 | $16.68 | $17.67 | $19.74 | $13.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.03) | $0.31 | $0.15 | $0.23 | $0.69 | $(0.04) |
| Net realized and unrealized gain (loss) | 2.61 | 1.16 | 2.00 | (0.35) | (1.34) | 6.02 |
| Total from investment operations | $2.58 | $1.47 | $2.15 | $(0.12) | $(0.65) | $5.98 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.33) | $(0.15) | $(0.24) | $(0.77) | $— |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.79) | $(0.42) | $(0.87) | $(1.42) | $(0.21) |
| Net asset value, end of period (x) | $21.67 | $19.09 | $18.41 | $16.68 | $17.67 | $19.74 |
| Total return (%) (r)(s)(t)(x) | 13.51(n) | 7.91 | 12.93 | (0.36) | (4.13) | 42.98 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.20(a) | 1.23 | 1.23 | 1.25 | 1.24 | 1.28 |
| Expenses after expense reductions (h) | 1.00(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.29)(a) | 1.58 | 0.85 | 1.39 | 3.47 | (0.25) |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $857 | $774 | $636 | $522 | $398 | $552 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2045 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.14 | $18.45 | $16.68 | $17.66 | $19.75 | $14.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.42 | $0.23 | $0.31 | $0.84 | $0.11 |
| Net realized and unrealized gain (loss) | 2.63 | 1.14 | 2.02 | (0.36) | (1.38) | 5.96 |
| Total from investment operations | $2.65 | $1.56 | $2.25 | $(0.05) | $(0.54) | $6.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.41) | $(0.21) | $(0.30) | $(0.90) | $(0.11) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.87) | $(0.48) | $(0.93) | $(1.55) | $(0.32) |
| Net asset value, end of period (x) | $21.79 | $19.14 | $18.45 | $16.68 | $17.66 | $19.75 |
| Total return (%) (r)(s)(t)(x) | 13.85(n) | 8.39 | 13.59 | 0.09 | (3.62) | 43.65 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.70(a) | 0.72 | 0.73 | 0.75 | 0.74 | 0.77 |
| Expenses after expense reductions (h) | 0.50(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.20(a) | 2.14 | 1.32 | 1.84 | 4.21 | 0.67 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $11011 | $9961 | $9755 | $10413 | $11276 | $15161 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.18 | $18.48 | $16.72 | $17.70 | $19.82 | $14.07 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.05 | $0.46 | $0.29 | $0.36 | $0.92 | $0.18 |
| Net realized and unrealized gain (loss) | 2.62 | 1.16 | 2.01 | (0.36) | (1.41) | 5.97 |
| Total from investment operations | $2.67 | $1.62 | $2.30 | $0.00 | $(0.49) | $6.15 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.27) | $(0.35) | $(0.98) | $(0.19) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.92) | $(0.54) | $(0.98) | $(1.63) | $(0.40) |
| Net asset value, end of period (x) | $21.85 | $19.18 | $18.48 | $16.72 | $17.70 | $19.82 |
| Total return (%) (r)(s)(t)(x) | 13.92(n) | 8.68 | 13.85 | 0.39 | (3.42) | 44.05 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.45(a) | 0.47 | 0.48 | 0.50 | 0.49 | 0.51 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.45(a) | 2.32 | 1.64 | 2.13 | 4.61 | 1.08 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $160243 | $145617 | $165730 | $129497 | $127223 | $109034 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2045 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.37 | $18.65 | $16.86 | $17.84 | $19.94 | $14.14 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.08 | $0.49 | $0.29 | $0.40 | $0.85 | $0.21 |
| Net realized and unrealized gain (loss) | 2.65 | 1.20 | 2.07 | (0.36) | (1.30) | 6.02 |
| Total from investment operations | $2.73 | $1.69 | $2.36 | $0.04 | $(0.45) | $6.23 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.30) | $(0.39) | $(1.00) | $(0.22) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(0.97) | $(0.57) | $(1.02) | $(1.65) | $(0.43) |
| Net asset value, end of period (x) | $22.10 | $19.37 | $18.65 | $16.86 | $17.84 | $19.94 |
| Total return (%) (r)(s)(t)(x) | 14.09(n) | 8.98 | 14.11 | 0.64 | (3.17) | 44.39 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.20(a) | 0.23 | 0.23 | 0.25 | 0.24 | 0.27 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.70(a) | 2.48 | 1.63 | 2.38 | 4.18 | 1.23 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $21028 | $20375 | $20246 | $23492 | $20668 | $68489 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.33 | $18.62 | $16.84 | $17.82 | $19.93 | $14.14 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.09 | $0.54 | $0.36 | $0.50 | $1.05 | $0.27 |
| Net realized and unrealized gain (loss) | 2.65 | 1.17 | 2.02 | (0.43) | (1.46) | 5.98 |
| Total from investment operations | $2.74 | $1.71 | $2.38 | $0.07 | $(0.41) | $6.25 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.54) | $(0.33) | $(0.42) | $(1.05) | $(0.25) |
| From net realized gain |  | (0.46) | (0.27) | (0.63) | (0.65) | (0.21) |
| Total distributions declared to shareholders | $— | $(1.00) | $(0.60) | $(1.05) | $(1.70) | $(0.46) |
| Net asset value, end of period (x) | $22.07 | $19.33 | $18.62 | $16.84 | $17.82 | $19.93 |
| Total return (%) (r)(s)(t)(x) | 14.17(n) | 9.11 | 14.27 | 0.82 | (2.99) | 44.58 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.06(a) | 0.08 | 0.08 | 0.10 | 0.09 | 0.11 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.84(a) | 2.70 | 2.03 | 2.99 | 5.23 | 1.56 |
| Portfolio turnover rate | 3(n) | 14 | 9 | 23 | 18 | 30 |
| Net assets at end of period (000 omitted) | $314878 | $287225 | $261476 | $197399 | $166911 | $140992 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2045 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2050 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $23.11 | $22.21 | $20.09 | $21.30 | $23.98 | $16.99 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.51 | $0.32 | $0.43 | $1.17 | $0.22 |
| Net realized and unrealized gain (loss) | 3.34 | 1.44 | 2.51 | (0.44) | (1.73) | 7.23 |
| Total from investment operations | $3.36 | $1.95 | $2.83 | $(0.01) | $(0.56) | $7.45 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.52) | $(0.31) | $(0.44) | $(1.18) | $(0.23) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.23) |
| Total distributions declared to shareholders | $— | $(1.05) | $(0.71) | $(1.20) | $(2.12) | $(0.46) |
| Net asset value, end of period | $26.47 | $23.11 | $22.21 | $20.09 | $21.30 | $23.98 |
| Total return (%) (r)(s)(t)(x) | 14.54(n) | 8.72 | 14.17 | 0.34 | (3.36) | 44.17 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.45(a) | 0.47 | 0.48 | 0.50 | 0.50 | 0.51 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.14(a) | 2.14 | 1.51 | 2.12 | 4.85 | 1.08 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $45471 | $39991 | $37887 | $27752 | $22761 | $22708 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2050 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $22.88 | $21.96 | $19.80 | $20.96 | $23.62 | $16.75 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.08) | $0.31 | $0.12 | $0.26 | $0.95 | $0.06 |
| Net realized and unrealized gain (loss) | 3.31 | 1.43 | 2.51 | (0.40) | (1.70) | 7.11 |
| Total from investment operations | $3.23 | $1.74 | $2.63 | $(0.14) | $(0.75) | $7.17 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.29) | $(0.07) | $(0.26) | $(0.97) | $(0.07) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.23) |
| Total distributions declared to shareholders | $— | $(0.82) | $(0.47) | $(1.02) | $(1.91) | $(0.30) |
| Net asset value, end of period | $26.11 | $22.88 | $21.96 | $19.80 | $20.96 | $23.62 |
| Total return (%) (r)(s)(t)(x) | 14.12(n) | 7.88 | 13.32 | (0.37) | (4.11) | 43.04 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.20(a) | 1.22 | 1.23 | 1.25 | 1.25 | 1.26 |
| Expenses after expense reductions (h) | 1.00(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.61)(a) | 1.33 | 0.57 | 1.30 | 3.98 | 0.32 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $457 | $459 | $650 | $987 | $1265 | $1727 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $22.53 | $21.68 | $19.63 | $20.83 | $23.49 | $16.65 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.08) | $0.31 | $0.14 | $0.28 | $0.91 | $0.06 |
| Net realized and unrealized gain (loss) | 3.26 | 1.41 | 2.46 | (0.43) | (1.65) | 7.08 |
| Total from investment operations | $3.18 | $1.72 | $2.60 | $(0.15) | $(0.74) | $7.14 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.34) | $(0.15) | $(0.29) | $(0.98) | $(0.07) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.23) |
| Total distributions declared to shareholders | $— | $(0.87) | $(0.55) | $(1.05) | $(1.92) | $(0.30) |
| Net asset value, end of period | $25.71 | $22.53 | $21.68 | $19.63 | $20.83 | $23.49 |
| Total return (%) (r)(s)(t)(x) | 14.11(n) | 7.88 | 13.33 | (0.37) | (4.11) | 43.12 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.20(a) | 1.22 | 1.23 | 1.25 | 1.25 | 1.26 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.61)(a) | 1.34 | 0.69 | 1.42 | 3.85 | 0.31 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $4448 | $4100 | $4204 | $3521 | $3223 | $3898 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2050 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $23.14 | $22.23 | $20.10 | $21.27 | $23.95 | $16.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.05 | $0.57 | $0.36 | $0.60 | $1.18 | $0.28 |
| Net realized and unrealized gain (loss) | 3.34 | 1.45 | 2.53 | (0.56) | (1.68) | 7.21 |
| Total from investment operations | $3.39 | $2.02 | $2.89 | $0.04 | $(0.50) | $7.49 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.58) | $(0.36) | $(0.45) | $(1.24) | $(0.28) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.23) |
| Total distributions declared to shareholders | $— | $(1.11) | $(0.76) | $(1.21) | $(2.18) | $(0.51) |
| Net asset value, end of period | $26.53 | $23.14 | $22.23 | $20.10 | $21.27 | $23.95 |
| Total return (%) (r)(s)(t)(x) | 14.65(n) | 9.03 | 14.46 | 0.60 | (3.14) | 44.49 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.20(a) | 0.22 | 0.23 | 0.25 | 0.25 | 0.26 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.39(a) | 2.41 | 1.68 | 3.00 | 4.92 | 1.36 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $9047 | $7780 | $7824 | $2425 | $1445 | $1033 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $22.62 | $21.78 | $19.72 | $20.91 | $23.59 | $16.67 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.08) | $0.33 | $0.15 | $0.29 | $0.95 | $(0.04) |
| Net realized and unrealized gain (loss) | 3.27 | 1.40 | 2.46 | (0.44) | (1.69) | 7.20 |
| Total from investment operations | $3.19 | $1.73 | $2.61 | $(0.15) | $(0.74) | $7.16 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.36) | $(0.15) | $(0.28) | $(1.00) | $— |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.24) |
| Total distributions declared to shareholders | $— | $(0.89) | $(0.55) | $(1.04) | $(1.94) | $(0.24) |
| Net asset value, end of period | $25.81 | $22.62 | $21.78 | $19.72 | $20.91 | $23.59 |
| Total return (%) (r)(s)(t)(x) | 14.10(n) | 7.88 | 13.32 | (0.37) | (4.08) | 43.08 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.20(a) | 1.22 | 1.23 | 1.25 | 1.25 | 1.28 |
| Expenses after expense reductions (h) | 1.00(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.61)(a) | 1.42 | 0.73 | 1.49 | 4.02 | (0.21) |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $1062 | $916 | $826 | $680 | $731 | $695 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2050 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $22.85 | $21.97 | $19.86 | $21.06 | $23.70 | $16.79 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.01) | $0.45 | $0.24 | $0.36 | $1.00 | $0.15 |
| Net realized and unrealized gain (loss) | 3.30 | 1.42 | 2.50 | (0.42) | (1.62) | 7.15 |
| Total from investment operations | $3.29 | $1.87 | $2.74 | $(0.06) | $(0.62) | $7.30 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.23) | $(0.38) | $(1.08) | $(0.15) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.24) |
| Total distributions declared to shareholders | $— | $(0.99) | $(0.63) | $(1.14) | $(2.02) | $(0.39) |
| Net asset value, end of period | $26.14 | $22.85 | $21.97 | $19.86 | $21.06 | $23.70 |
| Total return (%) (r)(s)(t)(x) | 14.40(n) | 8.46 | 13.89 | 0.07 | (3.59) | 43.72 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.70(a) | 0.72 | 0.73 | 0.75 | 0.75 | 0.77 |
| Expenses after expense reductions (h) | 0.50(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | (0.11)(a) | 1.92 | 1.14 | 1.82 | 4.18 | 0.72 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $18049 | $16547 | $15982 | $18388 | $19078 | $28781 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $22.90 | $22.01 | $19.91 | $21.11 | $23.79 | $16.86 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.50 | $0.31 | $0.42 | $1.10 | $0.22 |
| Net realized and unrealized gain (loss) | 3.31 | 1.44 | 2.49 | (0.42) | (1.67) | 7.17 |
| Total from investment operations | $3.33 | $1.94 | $2.80 | $0.00 | $(0.57) | $7.39 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.52) | $(0.30) | $(0.44) | $(1.17) | $(0.23) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.23) |
| Total distributions declared to shareholders | $— | $(1.05) | $(0.70) | $(1.20) | $(2.11) | $(0.46) |
| Net asset value, end of period | $26.23 | $22.90 | $22.01 | $19.91 | $21.11 | $23.79 |
| Total return (%) (r)(s)(t)(x) | 14.54(n) | 8.74 | 14.18 | 0.37 | (3.41) | 44.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.45(a) | 0.47 | 0.48 | 0.50 | 0.50 | 0.51 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.14(a) | 2.13 | 1.49 | 2.09 | 4.60 | 1.08 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $165680 | $147222 | $157398 | $121060 | $118076 | $113346 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2050 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $23.15 | $22.24 | $20.10 | $21.31 | $23.97 | $16.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.05 | $0.51 | $0.34 | $0.45 | $0.94 | $0.26 |
| Net realized and unrealized gain (loss) | 3.35 | 1.50 | 2.55 | (0.41) | (1.46) | 7.24 |
| Total from investment operations | $3.40 | $2.01 | $2.89 | $0.04 | $(0.52) | $7.50 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.57) | $(0.35) | $(0.49) | $(1.20) | $(0.26) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.24) |
| Total distributions declared to shareholders | $— | $(1.10) | $(0.75) | $(1.25) | $(2.14) | $(0.50) |
| Net asset value, end of period | $26.55 | $23.15 | $22.24 | $20.10 | $21.31 | $23.97 |
| Total return (%) (r)(s)(t)(x) | 14.69(n) | 8.98 | 14.49 | 0.57 | (3.16) | 44.52 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.20(a) | 0.22 | 0.23 | 0.25 | 0.25 | 0.27 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.39(a) | 2.15 | 1.61 | 2.24 | 3.88 | 1.28 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $38198 | $34359 | $38189 | $44972 | $24207 | $71368 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $23.12 | $22.21 | $20.08 | $21.29 | $23.96 | $16.97 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.07 | $0.60 | $0.40 | $0.57 | $1.26 | $0.32 |
| Net realized and unrealized gain (loss) | 3.34 | 1.45 | 2.51 | (0.50) | (1.72) | 7.20 |
| Total from investment operations | $3.41 | $2.05 | $2.91 | $0.07 | $(0.46) | $7.52 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.61) | $(0.38) | $(0.52) | $(1.27) | $(0.30) |
| From net realized gain |  | (0.53) | (0.40) | (0.76) | (0.94) | (0.23) |
| Total distributions declared to shareholders | $— | $(1.14) | $(0.78) | $(1.28) | $(2.21) | $(0.53) |
| Net asset value, end of period | $26.53 | $23.12 | $22.21 | $20.08 | $21.29 | $23.96 |
| Total return (%) (r)(s)(t)(x) | 14.75(n) | 9.20 | 14.60 | 0.74 | (2.97) | 44.70 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.06(a) | 0.08 | 0.08 | 0.10 | 0.09 | 0.12 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.53(a) | 2.55 | 1.88 | 2.85 | 5.23 | 1.54 |
| Portfolio turnover rate | 3(n) | 13 | 7 | 21 | 17 | 24 |
| Net assets at end of period (000 omitted) | $341255 | $305358 | $284955 | $193767 | $147729 | $121495 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2050 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2055 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.95 | $19.12 | $17.30 | $18.30 | $20.42 | $14.47 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.40 | $0.27 | $0.37 | $1.02 | $0.19 |
| Net realized and unrealized gain (loss) | 2.88 | 1.28 | 2.16 | (0.37) | (1.52) | 6.15 |
| Total from investment operations | $2.90 | $1.68 | $2.43 | $0.00 | $(0.50) | $6.34 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.45) | $(0.26) | $(0.36) | $(1.02) | $(0.20) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.85) | $(0.61) | $(1.00) | $(1.62) | $(0.39) |
| Net asset value, end of period (x) | $22.85 | $19.95 | $19.12 | $17.30 | $18.30 | $20.42 |
| Total return (%) (r)(s)(t)(x) | 14.54(n) | 8.72 | 14.17 | 0.36 | (3.35) | 44.11 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.47(a) | 0.51 | 0.52 | 0.56 | 0.56 | 0.61 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.14(a) | 1.95 | 1.51 | 2.12 | 4.94 | 1.09 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $28162 | $24603 | $26236 | $19429 | $15144 | $14314 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2055 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.94 | $19.10 | $17.25 | $18.22 | $20.33 | $14.41 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.07) | $0.28 | $0.11 | $0.22 | $0.82 | $0.05 |
| Net realized and unrealized gain (loss) | 2.88 | 1.24 | 2.17 | (0.35) | (1.48) | 6.13 |
| Total from investment operations | $2.81 | $1.52 | $2.28 | $(0.13) | $(0.66) | $6.18 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.28) | $(0.08) | $(0.20) | $(0.85) | $(0.07) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.68) | $(0.43) | $(0.84) | $(1.45) | $(0.26) |
| Net asset value, end of period (x) | $22.75 | $19.94 | $19.10 | $17.25 | $18.22 | $20.33 |
| Total return (%) (r)(s)(t)(x) | 14.09(n) | 7.92 | 13.32 | (0.41) | (4.09) | 43.06 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.22(a) | 1.26 | 1.27 | 1.31 | 1.31 | 1.36 |
| Expenses after expense reductions (h) | 1.00(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.62)(a) | 1.39 | 0.63 | 1.30 | 3.96 | 0.31 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $237 | $291 | $383 | $502 | $590 | $713 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.64 | $18.85 | $17.06 | $18.06 | $20.17 | $14.29 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.07) | $0.28 | $0.12 | $0.23 | $0.82 | $0.05 |
| Net realized and unrealized gain (loss) | 2.84 | 1.22 | 2.14 | (0.36) | (1.47) | 6.08 |
| Total from investment operations | $2.77 | $1.50 | $2.26 | $(0.13) | $(0.65) | $6.13 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.31) | $(0.12) | $(0.23) | $(0.86) | $(0.06) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.71) | $(0.47) | $(0.87) | $(1.46) | $(0.25) |
| Net asset value, end of period (x) | $22.41 | $19.64 | $18.85 | $17.06 | $18.06 | $20.17 |
| Total return (%) (r)(s)(t)(x) | 14.10(n) | 7.87 | 13.34 | (0.43) | (4.06) | 43.08 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.22(a) | 1.26 | 1.27 | 1.31 | 1.31 | 1.36 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.61)(a) | 1.40 | 0.69 | 1.35 | 4.03 | 0.29 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $2952 | $2843 | $2889 | $2588 | $2426 | $2585 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2055 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.97 | $19.16 | $17.33 | $18.33 | $20.45 | $14.49 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.04 | $0.49 | $0.34 | $0.36 | $1.00 | $0.25 |
| Net realized and unrealized gain (loss) | 2.89 | 1.23 | 2.14 | (0.32) | (1.45) | 6.14 |
| Total from investment operations | $2.93 | $1.72 | $2.48 | $0.04 | $(0.45) | $6.39 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.30) | $(0.40) | $(1.07) | $(0.24) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.91) | $(0.65) | $(1.04) | $(1.67) | $(0.43) |
| Net asset value, end of period (x) | $22.90 | $19.97 | $19.16 | $17.33 | $18.33 | $20.45 |
| Total return (%) (r)(s)(t)(x) | 14.67(n) | 8.93 | 14.49 | 0.62 | (3.13) | 44.42 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.22(a) | 0.26 | 0.27 | 0.31 | 0.31 | 0.35 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.39(a) | 2.39 | 1.86 | 2.10 | 4.85 | 1.39 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $4733 | $3999 | $3821 | $1314 | $512 | $434 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.66 | $18.89 | $17.12 | $18.14 | $20.26 | $14.30 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.07) | $0.28 | $0.13 | $0.23 | $0.81 | $(0.06) |
| Net realized and unrealized gain (loss) | 2.84 | 1.22 | 2.13 | (0.36) | (1.46) | 6.21 |
| Total from investment operations | $2.77 | $1.50 | $2.26 | $(0.13) | $(0.65) | $6.15 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.33) | $(0.14) | $(0.25) | $(0.87) | $— |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.73) | $(0.49) | $(0.89) | $(1.47) | $(0.19) |
| Net asset value, end of period (x) | $22.43 | $19.66 | $18.89 | $17.12 | $18.14 | $20.26 |
| Total return (%) (r)(s)(t)(x) | 14.09(n) | 7.87 | 13.34 | (0.42) | (4.07) | 43.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.22(a) | 1.26 | 1.27 | 1.31 | 1.31 | 1.39 |
| Expenses after expense reductions (h) | 1.00(a) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.61)(a) | 1.38 | 0.74 | 1.37 | 3.95 | (0.34) |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $2770 | $2216 | $1684 | $1070 | $701 | $663 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2055 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.94 | $19.13 | $17.30 | $18.29 | $20.35 | $14.39 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.01) | $0.39 | $0.22 | $0.31 | $0.83 | $0.11 |
| Net realized and unrealized gain (loss) | 2.88 | 1.23 | 2.16 | (0.35) | (1.38) | 6.16 |
| Total from investment operations | $2.87 | $1.62 | $2.38 | $(0.04) | $(0.55) | $6.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.41) | $(0.20) | $(0.31) | $(0.91) | $(0.12) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.81) | $(0.55) | $(0.95) | $(1.51) | $(0.31) |
| Net asset value, end of period (x) | $22.81 | $19.94 | $19.13 | $17.30 | $18.29 | $20.35 |
| Total return (%) (r)(s)(t)(x) | 14.39(n) | 8.43 | 13.89 | 0.10 | (3.56) | 43.78 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.72(a) | 0.76 | 0.77 | 0.81 | 0.81 | 0.87 |
| Expenses after expense reductions (h) | 0.50(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | (0.11)(a) | 1.93 | 1.19 | 1.80 | 4.02 | 0.64 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $11993 | $11094 | $9538 | $9003 | $8981 | $17589 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $19.95 | $19.13 | $17.31 | $18.31 | $20.42 | $14.47 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.43 | $0.27 | $0.36 | $0.97 | $0.19 |
| Net realized and unrealized gain (loss) | 2.88 | 1.25 | 2.16 | (0.36) | (1.46) | 6.15 |
| Total from investment operations | $2.90 | $1.68 | $2.43 | $0.00 | $(0.49) | $6.34 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.46) | $(0.26) | $(0.36) | $(1.02) | $(0.20) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.86) | $(0.61) | $(1.00) | $(1.62) | $(0.39) |
| Net asset value, end of period (x) | $22.85 | $19.95 | $19.13 | $17.31 | $18.31 | $20.42 |
| Total return (%) (r)(s)(t)(x) | 14.54(n) | 8.71 | 14.16 | 0.34 | (3.33) | 44.10 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.47(a) | 0.51 | 0.52 | 0.56 | 0.56 | 0.61 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 0.14(a) | 2.12 | 1.51 | 2.09 | 4.69 | 1.09 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $120770 | $105695 | $107463 | $76726 | $73743 | $65613 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2055 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $20.18 | $19.34 | $17.47 | $18.47 | $20.56 | $14.55 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.04 | $0.46 | $0.26 | $0.41 | $0.80 | $0.22 |
| Net realized and unrealized gain (loss) | 2.92 | 1.29 | 2.24 | (0.37) | (1.25) | 6.21 |
| Total from investment operations | $2.96 | $1.75 | $2.50 | $0.04 | $(0.45) | $6.43 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.51) | $(0.28) | $(0.40) | $(1.04) | $(0.23) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.91) | $(0.63) | $(1.04) | $(1.64) | $(0.42) |
| Net asset value, end of period (x) | $23.14 | $20.18 | $19.34 | $17.47 | $18.47 | $20.56 |
| Total return (%) (r)(s)(t)(x) | 14.67(n) | 8.97 | 14.47 | 0.58 | (3.09) | 44.49 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.22(a) | 0.26 | 0.27 | 0.31 | 0.31 | 0.36 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.39(a) | 2.24 | 1.44 | 2.34 | 3.86 | 1.27 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $14309 | $12635 | $12123 | $18660 | $14606 | $38374 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $20.15 | $19.32 | $17.46 | $18.46 | $20.58 | $14.56 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.06 | $0.53 | $0.35 | $0.49 | $1.11 | $0.28 |
| Net realized and unrealized gain (loss) | 2.92 | 1.24 | 2.18 | (0.42) | (1.53) | 6.18 |
| Total from investment operations | $2.98 | $1.77 | $2.53 | $0.07 | $(0.42) | $6.46 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.54) | $(0.32) | $(0.43) | $(1.10) | $(0.25) |
| From net realized gain |  | (0.40) | (0.35) | (0.64) | (0.60) | (0.19) |
| Total distributions declared to shareholders | $— | $(0.94) | $(0.67) | $(1.07) | $(1.70) | $(0.44) |
| Net asset value, end of period (x) | $23.13 | $20.15 | $19.32 | $17.46 | $18.46 | $20.58 |
| Total return (%) (r)(s)(t)(x) | 14.79(n) | 9.11 | 14.66 | 0.75 | (2.99) | 44.75 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.09(a) | 0.11 | 0.12 | 0.15 | 0.15 | 0.21 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.53(a) | 2.55 | 1.89 | 2.82 | 5.32 | 1.54 |
| Portfolio turnover rate | 4(n) | 15 | 7 | 13 | 19 | 24 |
| Net assets at end of period (000 omitted) | $250922 | $218596 | $193673 | $133208 | $87462 | $60705 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2055 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

Financial Highlights - continued

**MFS Lifetime 2060 Fund**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class A** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.08 | $15.37 | $13.87 | $14.54 | $15.99 | $11.25 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.36 | $0.22 | $0.30 | $0.78 | $0.15 |
| Net realized and unrealized gain (loss) | 2.33 | 0.97 | 1.72 | (0.30) | (1.22) | 4.82 |
| Total from investment operations | $2.34 | $1.33 | $1.94 | $0.00(w) | $(0.44) | $4.97 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.36) | $(0.20) | $(0.28) | $(0.79) | $(0.14) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.62) | $(0.44) | $(0.67) | $(1.01) | $(0.23) |
| Net asset value, end of period (x) | $18.42 | $16.08 | $15.37 | $13.87 | $14.54 | $15.99 |
| Total return (%) (r)(s)(t)(x) | 14.55(n) | 8.61 | 14.12 | 0.35 | (3.51) | 44.39 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.54(a) | 0.59 | 0.61 | 0.70 | 0.79 | 1.08 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.24 |
| Net investment income (loss) (l) | 0.14(a) | 2.18 | 1.48 | 2.17 | 4.80 | 1.06 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $21771 | $18302 | $15598 | $11316 | $8023 | $5584 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2060 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class B** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.16 | $15.40 | $13.87 | $14.52 | $15.95 | $11.24 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.35 | $0.08 | $0.19 | $0.65 | $0.04 |
| Net realized and unrealized gain (loss) | 2.34 | 0.99 | 1.75 | (0.29) | (1.21) | 4.80 |
| Total from investment operations | $2.35 | $1.34 | $1.83 | $(0.10) | $(0.56) | $4.84 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.32) | $(0.06) | $(0.16) | $(0.65) | $(0.04) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.58) | $(0.30) | $(0.55) | $(0.87) | $(0.13) |
| Net asset value, end of period (x) | $18.51 | $16.16 | $15.40 | $13.87 | $14.52 | $15.95 |
| Total return (%) (r)(s)(t)(x) | 14.54(n) | 8.62 | 13.27 | (0.41) | (4.15) | 43.16 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.54(a) | 0.58 | 1.36 | 1.45 | 1.54 | 1.83 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | 0.14(a) | 2.12 | 0.58 | 1.35 | 4.02 | 0.33 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $157 | $146 | $150 | $168 | $179 | $191 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class C** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $15.90 | $15.21 | $13.74 | $14.41 | $15.86 | $11.18 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.05) | $0.22 | $0.10 | $0.19 | $0.67 | $0.05 |
| Net realized and unrealized gain (loss) | 2.29 | 0.98 | 1.71 | (0.29) | (1.23) | 4.78 |
| Total from investment operations | $2.24 | $1.20 | $1.81 | $(0.10) | $(0.56) | $4.83 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.25) | $(0.10) | $(0.18) | $(0.67) | $(0.06) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.51) | $(0.34) | $(0.57) | $(0.89) | $(0.15) |
| Net asset value, end of period (x) | $18.14 | $15.90 | $15.21 | $13.74 | $14.41 | $15.86 |
| Total return (%) (r)(s)(t)(x) | 14.09(n) | 7.79 | 13.30 | (0.40) | (4.20) | 43.28 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.29(a) | 1.34 | 1.36 | 1.45 | 1.54 | 1.83 |
| Expenses after expense reductions (h) | 0.99(a) | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 |
| Net investment income (loss) (l) | (0.60)(a) | 1.36 | 0.71 | 1.38 | 4.14 | 0.34 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $1922 | $1677 | $1468 | $1091 | $891 | $761 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2060 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class I** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.24 | $15.51 | $13.99 | $14.65 | $16.09 | $11.32 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.04 | $0.38 | $0.26 | $0.33 | $0.85 | $0.19 |
| Net realized and unrealized gain (loss) | 2.34 | 1.01 | 1.73 | (0.29) | (1.25) | 4.84 |
| Total from investment operations | $2.38 | $1.39 | $1.99 | $0.04 | $(0.40) | $5.03 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.40) | $(0.23) | $(0.31) | $(0.82) | $(0.17) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.66) | $(0.47) | $(0.70) | $(1.04) | $(0.26) |
| Net asset value, end of period (x) | $18.62 | $16.24 | $15.51 | $13.99 | $14.65 | $16.09 |
| Total return (%) (r)(s)(t)(x) | 14.66(n) | 8.92 | 14.39 | 0.64 | (3.25) | 44.66 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.29(a) | 0.34 | 0.36 | 0.45 | 0.54 | 0.82 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.39(a) | 2.30 | 1.78 | 2.38 | 5.20 | 1.33 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $1261 | $896 | $576 | $396 | $295 | $232 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R1** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.19 | $15.47 | $13.95 | $14.57 | $16.01 | $11.28 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.36 | $0.21 | $0.26 | $0.65 | $0.04 |
| Net realized and unrealized gain (loss) | 2.34 | 0.98 | 1.75 | (0.29) | (1.22) | 4.82 |
| Total from investment operations | $2.35 | $1.34 | $1.96 | $(0.03) | $(0.57) | $4.86 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.36) | $(0.20) | $(0.20) | $(0.65) | $(0.04) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.62) | $(0.44) | $(0.59) | $(0.87) | $(0.13) |
| Net asset value, end of period (x) | $18.54 | $16.19 | $15.47 | $13.95 | $14.57 | $16.01 |
| Total return (%) (r)(s)(t)(x) | 14.52(n) | 8.61 | 14.15 | 0.09 | (4.20) | 43.20 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.54(a) | 0.59 | 0.61 | 0.96 | 1.54 | 1.83 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.50 | 1.00 | 0.99 |
| Net investment income (loss) (l) | 0.14(a) | 2.16 | 1.46 | 1.85 | 3.99 | 0.32 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $117 | $102 | $94 | $82 | $82 | $86 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2060 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R2** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.06 | $15.36 | $13.86 | $14.52 | $15.97 | $11.25 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.01) | $0.32 | $0.18 | $0.23 | $0.75 | $0.13 |
| Net realized and unrealized gain (loss) | 2.32 | 0.97 | 1.73 | (0.27) | (1.23) | 4.80 |
| Total from investment operations | $2.31 | $1.29 | $1.91 | $(0.04) | $(0.48) | $4.93 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.33) | $(0.17) | $(0.23) | $(0.75) | $(0.12) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.59) | $(0.41) | $(0.62) | $(0.97) | $(0.21) |
| Net asset value, end of period (x) | $18.37 | $16.06 | $15.36 | $13.86 | $14.52 | $15.97 |
| Total return (%) (r)(s)(t)(x) | 14.38(n) | 8.32 | 13.92 | 0.04 | (3.73) | 43.97 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.79(a) | 0.84 | 0.86 | 0.96 | 1.04 | 1.33 |
| Expenses after expense reductions (h) | 0.50(a) | 0.50 | 0.50 | 0.50 | 0.50 | 0.49 |
| Net investment income (loss) (l) | (0.11)(a) | 1.93 | 1.23 | 1.66 | 4.62 | 0.99 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $4935 | $3988 | $3262 | $2203 | $2107 | $1580 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R3** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.11 | $15.39 | $13.89 | $14.56 | $16.00 | $11.27 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.35 | $0.22 | $0.30 | $0.77 | $0.16 |
| Net realized and unrealized gain (loss) | 2.32 | 0.99 | 1.72 | (0.30) | (1.21) | 4.81 |
| Total from investment operations | $2.33 | $1.34 | $1.94 | $0.00(w) | $(0.44) | $4.97 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.36) | $(0.20) | $(0.28) | $(0.78) | $(0.15) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.62) | $(0.44) | $(0.67) | $(1.00) | $(0.24) |
| Net asset value, end of period (x) | $18.44 | $16.11 | $15.39 | $13.89 | $14.56 | $16.00 |
| Total return (%) (r)(s)(t)(x) | 14.46(n) | 8.64 | 14.12 | 0.36 | (3.46) | 44.28 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.54(a) | 0.59 | 0.61 | 0.70 | 0.79 | 1.07 |
| Expenses after expense reductions (h) | 0.25(a) | 0.25 | 0.25 | 0.25 | 0.25 | 0.24 |
| Net investment income (loss) (l) | 0.14(a) | 2.10 | 1.51 | 2.17 | 4.74 | 1.12 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $78333 | $66823 | $63579 | $43119 | $28505 | $17477 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2060 Fund - continued**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R4** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.23 | $15.50 | $13.97 | $14.64 | $16.07 | $11.31 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.03 | $0.40 | $0.23 | $0.32 | $0.57 | $0.18 |
| Net realized and unrealized gain (loss) | 2.35 | 0.99 | 1.77 | (0.29) | (0.98) | 4.84 |
| Total from investment operations | $2.38 | $1.39 | $2.00 | $0.03 | $(0.41) | $5.02 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.40) | $(0.23) | $(0.31) | $(0.80) | $(0.17) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.66) | $(0.47) | $(0.70) | $(1.02) | $(0.26) |
| Net asset value, end of period (x) | $18.61 | $16.23 | $15.50 | $13.97 | $14.64 | $16.07 |
| Total return (%) (r)(s)(t)(x) | 14.66(n) | 8.91 | 14.45 | 0.57 | (3.31) | 44.61 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.29(a) | 0.34 | 0.36 | 0.45 | 0.55 | 0.83 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.39(a) | 2.39 | 1.56 | 2.29 | 3.51 | 1.33 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $6207 | $5668 | $4458 | $7987 | $3227 | $8871 |
|  | **Six months** |  |  | **Year ended** |  |  |
|  | **ended** |  |  | **Year ended** |  |  |
|  | **ended** |  |  |  |  |  |
|  | **ended** |  |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22** | **4/30/21** |
| **Class R6** | (unaudited) |  |  |  |  |  |
| Net asset value, beginning of period | $16.28 | $15.55 | $14.01 | $14.67 | $16.11 | $11.33 |
| **Income (loss) from investment operations** |  |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.05 | $0.42 | $0.28 | $0.40 | $0.88 | $0.21 |
| Net realized and unrealized gain (loss) | 2.34 | 1.00 | 1.75 | (0.34) | (1.26) | 4.85 |
| Total from investment operations | $2.39 | $1.42 | $2.03 | $0.06 | $(0.38) | $5.06 |
| **Less distributions declared to shareholders** |  |  |  |  |  |  |
| From net investment income | $— | $(0.43) | $(0.25) | $(0.33) | $(0.84) | $(0.19) |
| From net realized gain |  | (0.26) | (0.24) | (0.39) | (0.22) | (0.09) |
| Total distributions declared to shareholders | $— | $(0.69) | $(0.49) | $(0.72) | $(1.06) | $(0.28) |
| Net asset value, end of period (x) | $18.67 | $16.28 | $15.55 | $14.01 | $14.67 | $16.11 |
| Total return (%) (r)(s)(t)(x) | 14.68(n) | 9.05 | 14.65 | 0.77 | (3.15) | 44.87 |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.14(a) | 0.19 | 0.21 | 0.31 | 0.40 | 0.69 |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 0.54(a) | 2.54 | 1.89 | 2.87 | 5.38 | 1.49 |
| Portfolio turnover rate | 5(n) | 18 | 7 | 14 | 18 | 21 |
| Net assets at end of period (000 omitted) | $141912 | $120351 | $103606 | $60227 | $35897 | $25148 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2060 Fund - continued**

(a) Annualized.

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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.

(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 semiannual period and the past 5 fiscal 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.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class A** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.87 | $9.39 | $8.39 | $8.68 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.22 | $0.14 | $0.18 | $0.21 |
| Net realized and unrealized gain (loss) | 1.42 | 0.60 | 1.05 | (0.17)(g) | (1.12) |
| Total from investment operations | $1.43 | $0.82 | $1.19 | $0.01 | $(0.91) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.22) | $(0.13) | $(0.18) | $(0.41) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.34) | $(0.19) | $(0.30) | $(0.41) |
| Net asset value, end of period (x) | $11.30 | $9.87 | $9.39 | $8.39 | $8.68 |
| Total return (%) (r)(s)(t)(x) | 14.49(n) | 8.67 | 14.19 | 0.42 | (9.56)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.29(a) | 1.48 | 2.25 | 10.09 | 11.82(a) |
| Expenses after expense reductions (h) | 0.25(a) | 0.24 | 0.22 | 0.15 | 0.12(a) |
| Net investment income (loss) (l) | 0.14(a) | 2.18 | 1.55 | 2.24 | 3.44(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $2811 | $2103 | $1332 | $539 | $240 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2065 Fund - continued**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class C** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.81 | $9.36 | $8.37 | $8.67 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.03) | $0.15 | $0.06 | $0.12 | $0.40 |
| Net realized and unrealized gain (loss) | 1.41 | 0.58 | 1.07 | (0.18)(g) | (1.35) |
| Total from investment operations | $1.38 | $0.73 | $1.13 | $(0.06) | $(0.95) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.16) | $(0.08) | $(0.12) | $(0.38) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.28) | $(0.14) | $(0.24) | $(0.38) |
| Net asset value, end of period (x) | $11.19 | $9.81 | $9.36 | $8.37 | $8.67 |
| Total return (%) (r)(s)(t)(x) | 14.07(n) | 7.77 | 13.47 | (0.42) | (9.93)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.99(a) | 2.20 | 3.04 | 11.64 | 13.66(a) |
| Expenses after expense reductions (h) | 1.00(a) | 0.99 | 0.97 | 0.89 | 0.87(a) |
| Net investment income (loss) (l) | (0.61)(a) | 1.47 | 0.73 | 1.51 | 6.35(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $396 | $303 | $183 | $89 | $52 |
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class I** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.91 | $9.43 | $8.41 | $8.70 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.20 | $0.16 | $0.23 | $0.48 |
| Net realized and unrealized gain (loss) | 1.43 | 0.64 | 1.06 | (0.21)(g) | (1.37) |
| Total from investment operations | $1.45 | $0.84 | $1.22 | $0.02 | $(0.89) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.24) | $(0.14) | $(0.19) | $(0.41) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.36) | $(0.20) | $(0.31) | $(0.41) |
| Net asset value, end of period (x) | $11.36 | $9.91 | $9.43 | $8.41 | $8.70 |
| Total return (%) (r)(s)(t)(x) | 14.63(n) | 8.86 | 14.58 | 0.59 | (9.32)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.96(a) | 1.21 | 2.15 | 10.51 | 12.75(a) |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 0.39(a) | 1.94 | 1.80 | 2.75 | 7.56(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $701 | $327 | $101 | $64 | $46 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2065 Fund - continued**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class R1** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.86 | $9.38 | $8.38 | $8.67 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.03) | $0.14 | $0.07 | $0.13 | $0.42 |
| Net realized and unrealized gain (loss) | 1.42 | 0.60 | 1.05 | (0.18)(g) | (1.37) |
| Total from investment operations | $1.39 | $0.74 | $1.12 | $(0.05) | $(0.95) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.14) | $(0.06) | $(0.12) | $(0.38) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.26) | $(0.12) | $(0.24) | $(0.38) |
| Net asset value, end of period (x) | $11.25 | $9.86 | $9.38 | $8.38 | $8.67 |
| Total return (%) (r)(s)(t)(x) | 14.10(n) | 7.84 | 13.33 | (0.37) | (9.93)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.99(a) | 2.25 | 3.26 | 12.20 | 13.76(a) |
| Expenses after expense reductions (h) | 1.00(a) | 0.98 | 0.97 | 0.89 | 0.87(a) |
| Net investment income (loss) (l) | (0.61)(a) | 1.42 | 0.76 | 1.59 | 6.58(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $74 | $65 | $60 | $53 | $45 |
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class R2** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.85 | $9.39 | $8.39 | $8.68 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $(0.01) | $0.22 | $0.12 | $0.17 | $0.44 |
| Net realized and unrealized gain (loss) | 1.43 | 0.56 | 1.05 | (0.18)(g) | (1.36) |
| Total from investment operations | $1.42 | $0.78 | $1.17 | $(0.01) | $(0.92) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.20) | $(0.11) | $(0.16) | $(0.40) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.32) | $(0.17) | $(0.28) | $(0.40) |
| Net asset value, end of period (x) | $11.27 | $9.85 | $9.39 | $8.39 | $8.68 |
| Total return (%) (r)(s)(t)(x) | 14.42(n) | 8.30 | 13.99 | 0.18 | (9.67)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.47(a) | 1.71 | 2.54 | 10.75 | 13.14(a) |
| Expenses after expense reductions (h) | 0.50(a) | 0.49 | 0.47 | 0.40 | 0.37(a) |
| Net investment income (loss) (l) | (0.11)(a) | 2.21 | 1.34 | 2.09 | 7.00(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $1804 | $1544 | $259 | $102 | $60 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2065 Fund - continued**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class R3** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.87 | $9.39 | $8.39 | $8.69 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.01 | $0.24 | $0.14 | $0.11 | $0.47 |
| Net realized and unrealized gain (loss) | 1.42 | 0.58 | 1.05 | (0.11)(g) | (1.37) |
| Total from investment operations | $1.43 | $0.82 | $1.19 | $0.00 | $(0.90) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.22) | $(0.13) | $(0.18) | $(0.41) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.34) | $(0.19) | $(0.30) | $(0.41) |
| Net asset value, end of period (x) | $11.30 | $9.87 | $9.39 | $8.39 | $8.69 |
| Total return (%) (r)(s)(t)(x) | 14.49(n) | 8.69 | 14.20 | 0.36 | (9.50)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 1.23(a) | 1.45 | 2.32 | 6.43 | 13.01(a) |
| Expenses after expense reductions (h) | 0.25(a) | 0.24 | 0.22 | 0.17 | 0.12(a) |
| Net investment income (loss) (l) | 0.14(a) | 2.37 | 1.57 | 1.39 | 7.33(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $12835 | $10628 | $6380 | $1729 | $45 |
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class R4** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.90 | $9.42 | $8.41 | $8.70 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.02 | $0.23 | $0.17 | $0.17 | $0.48 |
| Net realized and unrealized gain (loss) | 1.43 | 0.61 | 1.04 | (0.15)(g) | (1.37) |
| Total from investment operations | $1.45 | $0.84 | $1.21 | $0.02 | $(0.89) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.24) | $(0.14) | $(0.19) | $(0.41) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.36) | $(0.20) | $(0.31) | $(0.41) |
| Net asset value, end of period (x) | $11.35 | $9.90 | $9.42 | $8.41 | $8.70 |
| Total return (%) (r)(s)(t)(x) | 14.65(n) | 8.84 | 14.47 | 0.59 | (9.32)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.99(a) | 1.21 | 2.17 | 9.06 | 12.76(a) |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.01 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 0.39(a) | 2.32 | 1.90 | 2.06 | 7.58(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $1119 | $878 | $439 | $536 | $45 |

---

**See Notes to Financial Statements**

Financial Highlights - continued

**MFS Lifetime 2065 Fund - continued**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Six months** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  | **Year ended** | **Year ended** |  |
|  | **ended** |  |  |  |  |
|  | **ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** | **4/30/24** | **4/30/23** | **4/30/22(c)** |
| **Class R6** | (unaudited) |  |  |  |  |
| Net asset value, beginning of period | $9.92 | $9.43 | $8.41 | $8.69 | $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d)(l) | $0.03 | $0.26 | $0.17 | $0.23 | $0.43 |
| Net realized and unrealized gain (loss) | 1.43 | 0.60 | 1.06 | (0.20)(g) | (1.32) |
| Total from investment operations | $1.46 | $0.86 | $1.23 | $0.03 | $(0.89) |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $(0.25) | $(0.15) | $(0.19) | $(0.42) |
| From net realized gain |  | (0.12) | (0.06) | (0.12) |  |
| Total distributions declared to shareholders | $— | $(0.37) | $(0.21) | $(0.31) | $(0.42) |
| Net asset value, end of period (x) | $11.38 | $9.92 | $9.43 | $8.41 | $8.69 |
| Total return (%) (r)(s)(t)(x) | 14.72(n) | 9.06 | 14.66 | 0.72 | (9.42)(n) |
| **Ratios (%) (to average net assets) and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (h) | 0.83(a) | 1.08 | 1.83 | 7.93 | 12.42(a) |
| Expenses after expense reductions (h) | 0.00(a) | 0.00 | 0.01 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 0.54(a) | 2.55 | 1.87 | 2.78 | 6.79(a) |
| Portfolio turnover rate | 7(n) | 22 | 25 | 15 | 4(n) |
| Net assets at end of period (000 omitted) | $23035 | $16860 | $9473 | $3358 | $664 |

---

(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)Recognition of net investment income by the fund may be affected by the timing of the declaration of dividends by the underlying affiliated funds in which the fund invests and for interim net investment income ratios, the actual annual net investment income ratio may differ. 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**

(unaudited)

(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 tied economically to emerging markets, especially frontier markets, can involve additional and greater risks than the risks associated with investments in developed markets. Emerging markets can have less developed markets, greater custody and operational risk, less developed legal, regulatory, and accounting 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, geopolitical, 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.

An operating segment is defined in FASB Accounting Standards Codification Topic 280-Segment Reporting as 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 (unaudited) - 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. Funds traded on a recognized securities exchange (such as Exchange Traded Funds or Closed End Funds) are generally valued at the official closing price on their primary market or exchange as provided by a third-party pricing service. If no sales are reported that day for these funds, generally they will be valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. 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 (unaudited) - 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 October 31, 2025 in valuing each fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Level 1** | **Level 2** | **Level 3** | **Total** |
| <br>**MFS Lifetime Income Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $539361663 | $— | $— | $539361663 |
| **MFS Lifetime 2025 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $336101418 | $— | $— | $336101418 |
| **MFS Lifetime 2030 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $752045751 | $— | $— | $752045751 |
| **MFS Lifetime 2035 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $649916063 | $— | $— | $649916063 |
| **MFS Lifetime 2040 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $838245951 | $— | $— | $838245951 |
| **MFS Lifetime 2045 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $564051298 | $— | $— | $564051298 |
| **MFS Lifetime 2050 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $623695046 | $— | $— | $623695046 |
| **MFS Lifetime 2055 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $436776331 | $— | $— | $436776331 |
| **MFS Lifetime 2060 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $256602949 | $— | $— | $256602949 |
| **MFS Lifetime 2065 Fund** |  |  |  |  |
| **Financial Instruments** |  |  |  |  |
| Investment Companies | $42796693 | $— | $— | $42796693 |

---

For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds' financial statements 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 (unaudited) - 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 generally 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 made during the current period will be determined at fiscal year end. The tax character of distributions declared to shareholders for the last fiscal year is as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **Year ended 4/30/25** | **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| Ordinary income (including any short-term capital gains) | $22042114 | $14109613 | $27900416 | $20632388 | $24377381 |
| Long-term capital gains | 16265595 | 10105910 | 29406800 | 10721521 | 15046606 |
| Total distributions | $38307709 | $24215523 | $57307216 | $31353909 | $39423987 |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **Year ended 4/30/25** | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Ordinary income (including any short-term capital gains) | $15452105 | $15478076 | $10079050 | $5353515 | $669134 |
| Long-term capital gains | 9540974 | 10075925 | 5911016 | 2697038 | 232760 |
| Total distributions | $24993079 | $25554001 | $15990066 | $8050553 | $901894 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **As of 10/31/25** | **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| Cost of investments | $484439946 | $308567947 | $630270247 | $512904224 | $575674006 |
| Gross appreciation | 87666506 | 30086842 | 153456075 | 137957740 | 263121088 |
| Gross depreciation | (32744789) | (2553371) | (31680571) | (945901) | (549143) |
| Net unrealized appreciation (depreciation) | $54921717 | $27533471 | $121775504 | $137011839 | $262571945 |
| **As of 4/30/25** |  |  |  |  |  |
| Undistributed ordinary income | 23470 | 3293330 | 5987336 | 3474467 | 2345873 |
| Undistributed long-term capital gain | 7438853 | 5868583 | 22007512 | 20076956 | 30046637 |
| Other temporary differences | (1430036) |  |  |  |  |
| Net unrealized appreciation (depreciation) | 33244488 | 15610447 | 85287066 | 85216114 | 174226714 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **As of 10/31/25** | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Cost of investments | $414308911 | $448688356 | $333097118 | $209165555 | $36976274 |
| Gross appreciation | 149826787 | 192535934 | 103772069 | 47438652 | 6250390 |
| Gross depreciation | (84400) | (17529244) | (92856) | (1258) | (429971) |
| Net unrealized appreciation (depreciation) | $149742387 | $175006690 | $103679213 | $47437394 | $5820419 |
| **As of 4/30/25** |  |  |  |  |  |
| Undistributed ordinary income | 1276638 | 896423 | 484811 | 584227 | 37175 |
| Undistributed long-term capital gain | 21672715 | 24770061 | 15981095 | 8761591 | 1070159 |
| Net unrealized appreciation (depreciation) | 85379222 | 99081337 | 50260394 | 16389507 | 914668 |

---

The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.

**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:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Income Fund** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2025 Fund** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2030 Fund** |  |
|  | **Six Months Ended** | **Year Ended** | &nbsp;&nbsp;**Six Months Ended** | **Year Ended** | **Six Months Ended** | **Year Ended** |
|  | **10/31/25** | **4/30/25** | **10/31/25** | **4/30/25** | **10/31/25** | **4/30/25** |
| Class A | $2688370 | $12118187 | $— | $2138668 | $— | $6902201 |
| Class B | 3428 | 32532 |  | 18319 |  | 90661 |
| Class C | 141446 | 946423 |  | 142925 |  | 494056 |
| Class I | 691783 | 2830062 |  | 208991 |  | 628908 |
| Class R1 | 28358 | 163062 |  | 20035 |  | 225523 |
| Class R2 | 269881 | 1336777 |  | 795712 |  | 2601077 |
| Class R3 | 1209739 | 7106465 |  | 5900433 |  | 15242989 |
| Class R4 | 246516 | 1114947 |  | 1905992 |  | 2888479 |
| Class R6 | 2895542 | 12659254 |  | 13084448 |  | 28233322 |
| Total | $8175063 | $38307709 | $— | $24215523 | $— | $57307216 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime** |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2035 Fund** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2040 Fund** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2045 Fund** |  |
|  | **Six Months Ended** | **Year Ended** | &nbsp;&nbsp;**Six Months Ended** | **Year Ended** | **Six Months Ended** | **Year Ended** |
|  | **10/31/25** | **4/30/25** | **10/31/25** | **4/30/25** | **10/31/25** | **4/30/25** |
| Class A | $— | $2321363 | $— | $3649040 | $— | $1664273 |
| Class B |  | 22541 |  | 46079 |  | 13277 |
| Class C |  | 229744 |  | 268874 |  | 117749 |
| Class I |  | 446682 |  | 776372 |  | 595824 |
| Class R1 |  | 57518 |  | 139529 |  | 28532 |
| Class R2 |  | 631762 |  | 1971235 |  | 445402 |
| Class R3 |  | 8084873 |  | 10329285 |  | 7368504 |
| Class R4 |  | 1248338 |  | 1928669 |  | 902805 |
| Class R6 |  | 18311088 |  | 20314904 |  | 13856713 |
| Total | $— | $31353909 | $— | $39423987 | $— | $24993079 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2050 Fund** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2055 Fund** |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime**<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2060 Fund** |  |
|  | **Six Months Ended** | **Year Ended** | &nbsp;&nbsp;**Six Months Ended** | **Year Ended** | **Six Months Ended** | **Year Ended** |
|  | **10/31/25** | **4/30/25** | **10/31/25** | **4/30/25** | **10/31/25** | **4/30/25** |
| Class A | $— | $1742096 | $— | $985837 | $— | $659053 |
| Class B |  | 19174 |  | 12326 |  | 5147 |
| Class C |  | 159186 |  | 102582 |  | 48190 |
| Class I |  | 373691 |  | 178956 |  | 26603 |
| Class R1 |  | 34206 |  | 68973 |  | 3781 |
| Class R2 |  | 700685 |  | 408475 |  | 138005 |
| Class R3 |  | 6758067 |  | 4348269 |  | 2376888 |
| Class R4 |  | 1483697 |  | 492607 |  | 197292 |
| Class R6 |  | 14283199 |  | 9392041 |  | 4595594 |
| Total | $— | $25554001 | $— | $15990066 | $— | $8050553 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime** |  |  |  |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2065 Fund** |  |  |  |  |  |
|  | **Six Months Ended** | **Year Ended** |  |  |  |  |
|  | **10/31/25** | **4/30/25** |  |  |  |  |
| Class A | $— | $58615 |  |  |  |  |
| Class C |  | 7274 |  |  |  |  |
| Class I |  | 4499 |  |  |  |  |
| Class R1 |  | 1666 |  |  |  |  |
| Class R2 |  | 13113 |  |  |  |  |
| Class R3 |  | 337999 |  |  |  |  |
| Class R4 |  | 19909 |  |  |  |  |
| Class R6 |  | 458819 |  |  |  |  |
| Total | $— | $901894 |  |  |  |  |

---

(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.

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 six months ended October 31, 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** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| $432885 | $271760 | $463989 | $369843 | $479467 |
| **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| $349206 | $382222 | $309641 | $253246 | $174187 |

---

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, 2026. 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.

Notes to Financial Statements (unaudited) - continued

**Distributor** — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received the following amounts for the six months ended October 31, 2025, as its portion of the initial sales charge on sales of Class A shares of each fund:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| $610 | $979 | $4401 | $5306 | $9488 |
| **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| $5381 | $6665 | $6283 | $9047 | $1762 |

---

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** |  |  |
|  |  |  | **Total** | **Annual** | **Distribution** |
|  | **Distribution** | **Service** | **Distribution** | **Effective** | **and Service** |
|  | **Fee Rate (d)** | **Fee Rate (d)** | **Plan (d)** | **Rate (e)** | **Fee** |
| MFS Lifetime Income Fund |  | 0.25% | 0.25% | 0.25% | $235192 |
| MFS Lifetime 2025 Fund |  | 0.25% | 0.25% | 0.25% | 38552 |
| MFS Lifetime 2030 Fund |  | 0.25% | 0.25% | 0.25% | 120115 |
| MFS Lifetime 2035 Fund |  | 0.25% | 0.25% | 0.25% | 63739 |
| MFS Lifetime 2040 Fund |  | 0.25% | 0.25% | 0.25% | 100779 |
| MFS Lifetime 2045 Fund |  | 0.25% | 0.25% | 0.25% | 48023 |
| MFS Lifetime 2050 Fund |  | 0.25% | 0.25% | 0.25% | 55043 |
| MFS Lifetime 2055 Fund |  | 0.25% | 0.25% | 0.25% | 34016 |
| MFS Lifetime 2060 Fund |  | 0.25% | 0.25% | 0.25% | 25744 |
| MFS Lifetime 2065 Fund |  | 0.25% | 0.25% | 0.25% | 3148 |
|  |  |  | **Class B** |  |  |
|  |  |  | **Total** | **Annual** | **Distribution** |
|  | **Distribution** | **Service** | **Distribution** | **Effective** | **and Service** |
|  | **Fee Rate (d)** | **Fee Rate (d)** | **Plan (d)** | **Rate (e)** | **Fee** |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $1613 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 995 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 5182 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 1509 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 4406 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 1141 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 2389 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 1396 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 0.25% | 196 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  |  |  | **Class C** |  |  |
|  |  |  | **Total** | **Annual** | **Distribution** |
|  | **Distribution** | **Service** | **Distribution** | **Effective** | **and Service** |
|  | **Fee Rate (d)** | **Fee Rate (d)** | **Plan (d)** | **Rate (e)** | **Fee** |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $66660 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 10724 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 34717 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 28113 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 30126 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 16086 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 22236 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 15076 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 9344 |
| MFS Lifetime 2065 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 1776 |
|  |  |  | **Class R1** |  |  |
|  |  |  | **Total** | **Annual** | **Distribution** |
|  | **Distribution** | **Service** | **Distribution** | **Effective** | **and Service** |
|  | **Fee Rate (d)** | **Fee Rate (d)** | **Plan (d)** | **Rate (e)** | **Fee** |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $13383 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 1400 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 16611 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 6807 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 15951 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 4076 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 5107 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 12722 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 0.25% | 141 |
| MFS Lifetime 2065 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 358 |
|  |  |  | **Class R2** |  |  |
|  |  |  | **Total** | **Annual** | **Distribution** |
|  | **Distribution** | **Service** | **Distribution** | **Effective** | **and Service** |
|  | **Fee Rate (d)** | **Fee Rate (d)** | **Plan (d)** | **Rate (e)** | **Fee** |
| MFS Lifetime Income Fund | 0.25% | 0.25% | 0.50% | 0.50% | $51645 |
| MFS Lifetime 2025 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 30040 |
| MFS Lifetime 2030 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 85160 |
| MFS Lifetime 2035 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 34738 |
| MFS Lifetime 2040 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 103154 |
| MFS Lifetime 2045 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 27049 |
| MFS Lifetime 2050 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 44736 |
| MFS Lifetime 2055 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 29828 |
| MFS Lifetime 2060 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 11514 |
| MFS Lifetime 2065 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 4266 |
|  |  |  | **Class R3** |  |  |
|  |  |  | **Total** | **Annual** | **Distribution** |
|  | **Distribution** | **Service** | **Distribution** | **Effective** | **and Service** |
|  | **Fee Rate (d)** | **Fee Rate (d)** | **Plan (d)** | **Rate (e)** | **Fee** |
| MFS Lifetime Income Fund |  | 0.25% | 0.25% | 0.25% | $105795 |
| MFS Lifetime 2025 Fund |  | 0.25% | 0.25% | 0.25% | 102624 |
| MFS Lifetime 2030 Fund |  | 0.25% | 0.25% | 0.25% | 237851 |
| MFS Lifetime 2035 Fund |  | 0.25% | 0.25% | 0.25% | 202785 |
| MFS Lifetime 2040 Fund |  | 0.25% | 0.25% | 0.25% | 254484 |
| MFS Lifetime 2045 Fund |  | 0.25% | 0.25% | 0.25% | 195918 |
| MFS Lifetime 2050 Fund |  | 0.25% | 0.25% | 0.25% | 202155 |
| MFS Lifetime 2055 Fund |  | 0.25% | 0.25% | 0.25% | 145426 |
| MFS Lifetime 2060 Fund |  | 0.25% | 0.25% | 0.25% | 93438 |
| MFS Lifetime 2065 Fund |  | 0.25% | 0.25% | 0.25% | 14930 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **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** |
| Total Distribution and Service Fees | $474288 | $184335 | $499636 | $337691 | $508900 |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Total Distribution and Service Fees | $292293 | $331666 | $238464 | $140377 | $24478 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(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.

&nbsp;&nbsp;&nbsp;&nbsp;(e)The annual effective rates represent actual fees incurred under the distribution plan for the six months ended October 31, 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 six months ended October 31, 2025, these rebates amounted to the following and are included in the reduction of total expenses in the Statements of Operations:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| Class A | $97 | $166 | $282 | $40 | $423 |
| Class B |  | 4 | 11 |  | 27 |
| Class C | 42 | 20 | 256 | 245 | 145 |
| Class R2 | 76 |  | 176 |  | 86 |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Class A | $118 | $115 | $49 | $1 | $15 |
| Class B |  | 3 |  |  | N/A |
| Class C | 126 | 84 | 48 | 126 |  |
| Class R2 |  | 15 |  | 8 |  |

---

For the MFS Lifetime 2060 Fund, for the six months ended October 31, 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 six months ended October 31, 2025, were as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **CDSC Imposed** | **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| Class A | $3038 | $58 | $317 | $531 | $562 |
| Class B |  |  |  |  |  |
| Class C | 271 | 510 | 2216 | 165 | 638 |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **CDSC Imposed** | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Class A | $227 | $402 | $304 | $136 | $172 |
| Class B |  |  |  |  | N/A |
| Class C | 406 | 172 | 439 | 101 | 35 |

---

**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 six months ended October 31, 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** | **MFS Lifetime**<br>**2025 Fund** | **MFS Lifetime**<br>**2030 Fund** | **MFS Lifetime**<br>**2035 Fund** | **MFS Lifetime**<br>**2040 Fund** |
| Expenses paid | $35420 | $11953 | $30255 | $21577 | $33518 |
| Annual percentage of average daily net assets | 0.0129% | 0.0069% | 0.0081% | 0.0068% | 0.0081% |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime**<br>**2045 Fund** | **MFS Lifetime**<br>**2050 Fund** | **MFS Lifetime**<br>**2055 Fund** | **MFS Lifetime**<br>**2060 Fund** | **MFS Lifetime**<br>**2065 Fund** |
| Expenses paid | $21615 | $27931 | $27156 | $21106 | $10229 |
| Annual percentage of average daily net assets | 0.0078% | 0.0092% | 0.0129% | 0.0173% | 0.0531% |

---

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 six months ended October 31, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to the following:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| $232853 | $118130 | $270933 | $196997 | $284280 |
| **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
| **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| $185282 | $206219 | $140256 | $97006 | $17650 |

---

**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 six months ended October 31, 2025 was equivalent to the following annual effective rates of each fund's average daily net assets:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| Percentage of average daily net assets | 0.0032% | 0.0051% | 0.0023% | 0.0028% | 0.0021% |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Percentage of average daily net assets | 0.0032% | 0.0029% | 0.0042% | 0.0072% | 0.0458% |

---

**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** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Date** | **Transaction** | &nbsp;&nbsp;&nbsp;&nbsp;**Class** | **Shares** | **Amount** |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 11 | $134 |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 6 | 76 |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 7 | 83 |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R1 | 6 | 77 |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 6 | 80 |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 7 | 83 |
| MFS Lifetime Income Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 7 | 83 |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 3 | 42 |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 3 | 40 |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 4 | 50 |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 3 | 46 |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 3 | 40 |
| MFS Lifetime 2025 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 3 | 43 |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 4 | 65 |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 4 | 62 |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 4 | 67 |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R1 | 4 | 62 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Fund** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Date** | **Transaction** | &nbsp;&nbsp;&nbsp;&nbsp;**Class** | **Shares** | **Amount** |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 4 | 62 |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 4 | 65 |
| MFS Lifetime 2030 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 4 | 67 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 4 | 65 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 4 | 63 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 3 | 59 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R1 | 2 | 45 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 4 | 67 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 4 | 78 |
| MFS Lifetime 2035 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 3 | 59 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 8 | 152 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class B | 7 | 143 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 4 | 74 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 4 | 80 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R1 | 4 | 74 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 4 | 73 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 4 | 76 |
| MFS Lifetime 2040 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 4 | 80 |
| MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 3 | 57 |
| MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 3 | 52 |
| MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 4 | 72 |
| MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 4 | 77 |
| MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 4 | 75 |
| MFS Lifetime 2045 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 4 | 75 |
| MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 4 | 85 |
| MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 3 | 80 |
| MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 3 | 77 |
| MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 4 | 99 |
| MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 4 | 91 |
| MFS Lifetime 2050 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 4 | 87 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 3 | 56 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 3 | 52 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class I | 2 | 36 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R1 | 4226 | 85832 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 3 | 55 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 3 | 64 |
| MFS Lifetime 2055 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 3 | 64 |
| MFS Lifetime 2060 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 2 | 38 |
| MFS Lifetime 2060 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class C | 6114 | 100000 |
| MFS Lifetime 2060 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R2 | 2 | 38 |
| MFS Lifetime 2060 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 2 | 41 |
| MFS Lifetime 2060 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R4 | 2 | 39 |
| MFS Lifetime 2065 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class A | 5522 | 55884 |
| MFS Lifetime 2065 Fund | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8/19/2024 | Redemption | Class R3 | 2 | 20 |

---

At October 31, 2025, MFS held approximately 74% 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.

Notes to Financial Statements (unaudited) - continued

(4) Portfolio Securities

For the six months ended October 31, 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** | **MFS Lifetime**<br>**2025 Fund** | **MFS Lifetime**<br>**2030 Fund** | **MFS Lifetime**<br>**2035 Fund** | **MFS Lifetime**<br>**2040 Fund** |
| Purchases | $5158463 | $8562109 | $16754705 | $37209641 | $32492858 |
| Sales | $46834220 | $41263400 | $60844956 | $55448670 | $58927997 |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Purchases | $17207668 | $19948246 | $16399263 | $18071702 | $7664587 |
| Sales | $39034323 | $32575711 | $16459124 | $10975828 | $2567104 |

---

(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 2025 Fund** | **MFS Lifetime 2025 Fund** |  |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 384263 | $4801104 | 1631355 | $20220024 | 70869 | $967588 | 282644 | $3760079 |
| &nbsp;&nbsp;&nbsp;Class B |  |  | 387 | 4818 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class C | 29136 | 367110 | 101231 | 1257065 | 8179 | 109217 | 30046 | 400244 |
| &nbsp;&nbsp;&nbsp;Class I | 312739 | 3887545 | 555756 | 6873912 | 36675 | 502880 | 23844 | 329560 |
| &nbsp;&nbsp;&nbsp;Class R1 | 11790 | 147729 | 28354 | 351608 | 1175 | 16058 | 3221 | 43249 |
| &nbsp;&nbsp;&nbsp;Class R2 | 85339 | 1067010 | 234242 | 2892306 | 63711 | 873455 | 156234 | 2089030 |
| &nbsp;&nbsp;&nbsp;Class R3 | 362130 | 4526925 | 1361071 | 16846235 | 535833 | 7283530 | 974089 | 13043681 |
| &nbsp;&nbsp;&nbsp;Class R4 | 67764 | 848922 | 189638 | 2330777 | 127321 | 1753418 | 562389 | 7776652 |
| &nbsp;&nbsp;&nbsp;Class R6 | 726222 | 9092974 | 2493516 | 30822329 | 918677 | 12630404 | 2914503 | 39190621 |
|  | 1979383 | $24739319 | 6595550 | $81599074 | 1762440 | $24136550 | 4946970 | $66633116 |
| Shares issued to shareholders in |  |  |  |  |  |  |  |  |
| reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 202276 | $2535689 | 927514 | $11371904 |  | $— | 105570 | $1367136 |
| &nbsp;&nbsp;&nbsp;Class B | 270 | 3374 | 2645 | 32431 |  |  | 1408 | 18319 |
| &nbsp;&nbsp;&nbsp;Class C | 11182 | 140024 | 76573 | 937906 |  |  | 11148 | 142809 |
| &nbsp;&nbsp;&nbsp;Class I | 49192 | 617119 | 203081 | 2491830 |  |  | 16089 | 208991 |
| &nbsp;&nbsp;&nbsp;Class R1 | 2256 | 28325 | 13297 | 163062 |  |  | 1537 | 20035 |
| &nbsp;&nbsp;&nbsp;Class R2 | 20836 | 261191 | 106265 | 1302741 |  |  | 61399 | 793892 |
| &nbsp;&nbsp;&nbsp;Class R3 | 96499 | 1209399 | 579430 | 7106040 |  |  | 456337 | 5900433 |
| &nbsp;&nbsp;&nbsp;Class R4 | 19604 | 245621 | 90843 | 1113884 |  |  | 144285 | 1881482 |
| &nbsp;&nbsp;&nbsp;Class R6 | 216295 | 2720092 | 964304 | 11869243 |  |  | 933377 | 12152574 |
|  | 618410 | $7760834 | 2963952 | $36389041 |  | $— | 1731150 | $22485671 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** | **MFS Lifetime 2025 Fund - continued** | **MFS Lifetime 2025 Fund - continued** | **MFS Lifetime 2025 Fund - continued** | **MFS Lifetime 2025 Fund - continued** |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (1298731) | $(16259945) | (2808846) | $(34742878) | (258525) | $(3543408) | (854310) | $(11457574) |
| &nbsp;&nbsp;&nbsp;Class B | (15097) | (187429) | (37311) | (461165) | (8850) | (120307) | (21484) | (289084) |
| &nbsp;&nbsp;&nbsp;Class C | (229225) | (2861439) | (945568) | (11752059) | (20234) | (270126) | (91822) | (1210957) |
| &nbsp;&nbsp;&nbsp;Class I | (367994) | (4584463) | (688048) | (8508459) | (21261) | (294896) | (24554) | (325471) |
| &nbsp;&nbsp;&nbsp;Class R1 | (11917) | (148386) | (53822) | (658237) | (9611) | (130627) | (4714) | (62609) |
| &nbsp;&nbsp;&nbsp;Class R2 | (270277) | (3351332) | (468540) | (5820094) | (144464) | (1978211) | (284534) | (3755822) |
| &nbsp;&nbsp;&nbsp;Class R3 | (1250818) | (15579040) | (4847957) | (59335668) | (1124308) | (15270853) | (3375976) | (45193986) |
| &nbsp;&nbsp;&nbsp;Class R4 | (257770) | (3208787) | (437002) | (5399369) | (233679) | (3192091) | (705000) | (9792289) |
| &nbsp;&nbsp;&nbsp;Class R6 | (1982899) | (24796113) | (5574889) | (69180113) | (2615214) | (35667816) | (4394515) | (59321229) |
|  | (5684728) | $(70976934) | (15861983) | $(195858042) | (4436146) | $(60468335) | (9756909) | $(131409021) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (712192) | $(8923152) | (249977) | $(3150950) | (187656) | $(2575820) | (466096) | $(6330359) |
| &nbsp;&nbsp;&nbsp;Class B | (14827) | (184055) | (34279) | (423916) | (8850) | (120307) | (20076) | (270765) |
| &nbsp;&nbsp;&nbsp;Class C | (188907) | (2354305) | (767764) | (9557088) | (12055) | (160909) | (50628) | (667904) |
| &nbsp;&nbsp;&nbsp;Class I | (6063) | (79799) | 70789 | 857283 | 15414 | 207984 | 15379 | 213080 |
| &nbsp;&nbsp;&nbsp;Class R1 | 2129 | 27668 | (12171) | (143567) | (8436) | (114569) | 44 | 675 |
| &nbsp;&nbsp;&nbsp;Class R2 | (164102) | (2023131) | (128033) | (1625047) | (80753) | (1104756) | (66901) | (872900) |
| &nbsp;&nbsp;&nbsp;Class R3 | (792189) | (9842716) | (2907456) | (35383393) | (588475) | (7987323) | (1945550) | (26249872) |
| &nbsp;&nbsp;&nbsp;Class R4 | (170402) | (2114244) | (156521) | (1954708) | (106358) | (1438673) | 1674 | (134155) |
| &nbsp;&nbsp;&nbsp;Class R6 | (1040382) | (12983047) | (2117069) | (26488541) | (1696537) | (23037412) | (546635) | (7978034) |
|  | (3086935) | $(38476781) | (6302481) | $(77869927) | (2673706) | $(36331785) | (3078789) | $(42290234) |
|  |  | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** |  |  | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** |  |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 190739 | $3173545 | 535238 | $8693938 | 133967 | $2518557 | 566727 | $10140181 |
| &nbsp;&nbsp;&nbsp;Class B |  |  | 772 | 12707 | 386 | 7453 |  |  |
| &nbsp;&nbsp;&nbsp;Class C | 21601 | 349393 | 65686 | 1040010 | 17340 | 320110 | 48819 | 856057 |
| &nbsp;&nbsp;&nbsp;Class I | 67184 | 1122358 | 208832 | 3535156 | 56889 | 1073218 | 80595 | 1423577 |
| &nbsp;&nbsp;&nbsp;Class R1 | 10750 | 175998 | 23275 | 374793 | 2406 | 45034 | 9038 | 159943 |
| &nbsp;&nbsp;&nbsp;Class R2 | 127923 | 2103313 | 362021 | 5794936 | 70309 | 1319039 | 141165 | 2534362 |
| &nbsp;&nbsp;&nbsp;Class R3 | 649949 | 10707786 | 2160068 | 34896520 | 563404 | 10596452 | 1456885 | 26156650 |
| &nbsp;&nbsp;&nbsp;Class R4 | 132923 | 2240308 | 741843 | 12080226 | 119351 | 2249429 | 407851 | 7361557 |
| &nbsp;&nbsp;&nbsp;Class R6 | 1732748 | 28939406 | 4400746 | 72129712 | 1589583 | 30128021 | 3946886 | 71184191 |
|  | 2933817 | $48812107 | 8498481 | $138557998 | 2553635 | $48257313 | 6657966 | $119816518 |
| Shares issued to shareholders in |  |  |  |  |  |  |  |  |
| reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A |  | $— | 382191 | $5981292 |  | $— | 110452 | $1937322 |
| &nbsp;&nbsp;&nbsp;Class B |  |  | 5804 | 90661 |  |  | 1281 | 22541 |
| &nbsp;&nbsp;&nbsp;Class C |  |  | 31955 | 490821 |  |  | 13207 | 228080 |
| &nbsp;&nbsp;&nbsp;Class I |  |  | 39106 | 615916 |  |  | 25168 | 442697 |
| &nbsp;&nbsp;&nbsp;Class R1 |  |  | 14484 | 225523 |  |  | 3287 | 57518 |
| &nbsp;&nbsp;&nbsp;Class R2 |  |  | 165342 | 2567767 |  |  | 35833 | 630299 |
| &nbsp;&nbsp;&nbsp;Class R3 |  |  | 977115 | 15242989 |  |  | 459890 | 8084873 |
| &nbsp;&nbsp;&nbsp;Class R4 |  |  | 178409 | 2822437 |  |  | 70369 | 1248338 |
| &nbsp;&nbsp;&nbsp;Class R6 |  |  | 1599300 | 25236954 |  |  | 901447 | 15946596 |
|  |  | $— | 3393706 | $53274360 |  | $— | 1620934 | $28598264 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2035 Fund - continued** | **MFS Lifetime 2035 Fund - continued** | **MFS Lifetime 2035 Fund - continued** | **MFS Lifetime 2035 Fund - continued** |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (354148) | $(5891421) | (894939) | $(14552965) | (156164) | $(2924515) | (470035) | $(8343215) |
| &nbsp;&nbsp;&nbsp;Class B | (19609) | (321975) | (76735) | (1250105) | (5189) | (96204) | (23382) | (415660) |
| &nbsp;&nbsp;&nbsp;Class C | (89327) | (1442418) | (115739) | (1852151) | (36900) | (680951) | (67116) | (1195047) |
| &nbsp;&nbsp;&nbsp;Class I | (55537) | (941977) | (81674) | (1338238) | (64812) | (1214158) | (101728) | (1801183) |
| &nbsp;&nbsp;&nbsp;Class R1 | (4134) | (66222) | (35087) | (558779) | (10467) | (191953) | (7183) | (127365) |
| &nbsp;&nbsp;&nbsp;Class R2 | (372055) | (6074629) | (576346) | (9255134) | (105805) | (1993260) | (250803) | (4519735) |
| &nbsp;&nbsp;&nbsp;Class R3 | (2228358) | (36434833) | (4764076) | (76985009) | (1104105) | (20676290) | (3498924) | (62603782) |
| &nbsp;&nbsp;&nbsp;Class R4 | (408590) | (6821851) | (680746) | (11152012) | (170468) | (3260224) | (655996) | (11939547) |
| &nbsp;&nbsp;&nbsp;Class R6 | (2436182) | (40307697) | (7613535) | (125531372) | (1992257) | (37456244) | (3682948) | (66567020) |
|  | (5967940) | $(98303023) | (14838877) | $(242475765) | (3646167) | $(68493799) | (8758115) | $(157512554) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (163409) | $(2717876) | 22490 | $122265 | (22197) | $(405958) | 207144 | $3734288 |
| &nbsp;&nbsp;&nbsp;Class B | (19609) | (321975) | (70159) | (1146737) | (4803) | (88751) | (22101) | (393119) |
| &nbsp;&nbsp;&nbsp;Class C | (67726) | (1093025) | (18098) | (321320) | (19560) | (360841) | (5090) | (110910) |
| &nbsp;&nbsp;&nbsp;Class I | 11647 | 180381 | 166264 | 2812834 | (7923) | (140940) | 4035 | 65091 |
| &nbsp;&nbsp;&nbsp;Class R1 | 6616 | 109776 | 2672 | 41537 | (8061) | (146919) | 5142 | 90096 |
| &nbsp;&nbsp;&nbsp;Class R2 | (244132) | (3971316) | (48983) | (892431) | (35496) | (674221) | (73805) | (1355074) |
| &nbsp;&nbsp;&nbsp;Class R3 | (1578409) | (25727047) | (1626893) | (26845500) | (540701) | (10079838) | (1582149) | (28362259) |
| &nbsp;&nbsp;&nbsp;Class R4 | (275667) | (4581543) | 239506 | 3750651 | (51117) | (1010795) | (177776) | (3329652) |
| &nbsp;&nbsp;&nbsp;Class R6 | (703434) | (11368291) | (1613489) | (28164706) | (402674) | (7328223) | 1165385 | 20563767 |
|  | (3034123) | $(49490916) | (2946690) | $(50643407) | (1092532) | $(20236486) | (479215) | $(9097772) |
|  |  | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** |  |  | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** |  |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 204943 | $4292966 | 643004 | $12745582 | 87646 | $1830971 | 338469 | $6680677 |
| &nbsp;&nbsp;&nbsp;Class B | 1 |  | 403 | 8096 | 38 | 806 |  |  |
| &nbsp;&nbsp;&nbsp;Class C | 25102 | 517488 | 55909 | 1079909 | 15474 | 319494 | 39696 | 764685 |
| &nbsp;&nbsp;&nbsp;Class I | 89937 | 1893429 | 115772 | 2289487 | 27515 | 584816 | 82223 | 1609736 |
| &nbsp;&nbsp;&nbsp;Class R1 | 8827 | 183350 | 20909 | 408897 | 2239 | 46811 | 7237 | 141210 |
| &nbsp;&nbsp;&nbsp;Class R2 | 130330 | 2727649 | 300777 | 5885532 | 53996 | 1128979 | 122540 | 2423371 |
| &nbsp;&nbsp;&nbsp;Class R3 | 588868 | 12332933 | 1880308 | 37059314 | 485758 | 10116599 | 1344298 | 26371095 |
| &nbsp;&nbsp;&nbsp;Class R4 | 173007 | 3661064 | 358514 | 7171489 | 91110 | 1916958 | 252943 | 5013049 |
| &nbsp;&nbsp;&nbsp;Class R6 | 1357514 | 28878223 | 3997673 | 80013901 | 947199 | 20093644 | 3061210 | 60357722 |
|  | 2578529 | $54487102 | 7373269 | $146662207 | 1710975 | $36039078 | 5248616 | $103361545 |
| Shares issued to shareholders in |  |  |  |  |  |  |  |  |
| reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A |  | $— | 158712 | $3091704 |  | $— | 74951 | $1456306 |
| &nbsp;&nbsp;&nbsp;Class B |  |  | 2359 | 46079 |  |  | 682 | 13277 |
| &nbsp;&nbsp;&nbsp;Class C |  |  | 13801 | 263324 |  |  | 6120 | 117323 |
| &nbsp;&nbsp;&nbsp;Class I |  |  | 36761 | 721996 |  |  | 30477 | 595824 |
| &nbsp;&nbsp;&nbsp;Class R1 |  |  | 7222 | 139529 |  |  | 1472 | 28532 |
| &nbsp;&nbsp;&nbsp;Class R2 |  |  | 99141 | 1920365 |  |  | 22958 | 445402 |
| &nbsp;&nbsp;&nbsp;Class R3 |  |  | 530248 | 10329226 |  |  | 379429 | 7368504 |
| &nbsp;&nbsp;&nbsp;Class R4 |  |  | 97491 | 1927404 |  |  | 46004 | 901681 |
| &nbsp;&nbsp;&nbsp;Class R6 |  |  | 899432 | 17745784 |  |  | 626130 | 12240845 |
|  |  | $— | 1845167 | $36185411 |  | $— | 1188223 | $23167694 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2045 Fund - continued** | **MFS Lifetime 2045 Fund - continued** | **MFS Lifetime 2045 Fund - continued** | **MFS Lifetime 2045 Fund - continued** |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (262760) | $(5529099) | (574276) | $(11339234) | (202047) | $(4196670) | (365463) | $(7148654) |
| &nbsp;&nbsp;&nbsp;Class B | (18940) | (401800) | (27346) | (536526) | (4075) | (83724) | (10501) | (204609) |
| &nbsp;&nbsp;&nbsp;Class C | (64439) | (1314711) | (96461) | (1862718) | (29847) | (614355) | (59601) | (1149856) |
| &nbsp;&nbsp;&nbsp;Class I | (79471) | (1667329) | (127039) | (2541683) | (44573) | (953925) | (107146) | (2131830) |
| &nbsp;&nbsp;&nbsp;Class R1 | (28091) | (577060) | (26811) | (523739) | (3216) | (63203) | (2714) | (50370) |
| &nbsp;&nbsp;&nbsp;Class R2 | (186900) | (3841224) | (576114) | (11277361) | (68942) | (1449416) | (153947) | (3017412) |
| &nbsp;&nbsp;&nbsp;Class R3 | (1278672) | (26712308) | (3946410) | (77650739) | (746432) | (15510015) | (3100449) | (60594172) |
| &nbsp;&nbsp;&nbsp;Class R4 | (255792) | (5413431) | (577494) | (11651024) | (191546) | (4071518) | (332440) | (6553633) |
| &nbsp;&nbsp;&nbsp;Class R6 | (1757373) | (37154001) | (4716049) | (94714536) | (1539591) | (32206909) | (2872638) | (57351361) |
|  | (3932438) | $(82610963) | (10668000) | $(212097560) | (2830269) | $(59149735) | (7004899) | $(138201897) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (57817) | $(1236133) | 227440 | $4498052 | (114401) | $(2365699) | 47957 | $988329 |
| &nbsp;&nbsp;&nbsp;Class B | (18939) | (401800) | (24584) | (482351) | (4037) | (82918) | (9819) | (191332) |
| &nbsp;&nbsp;&nbsp;Class C | (39337) | (797223) | (26751) | (519485) | (14373) | (294861) | (13785) | (267848) |
| &nbsp;&nbsp;&nbsp;Class I | 10466 | 226100 | 25494 | 469800 | (17058) | (369109) | 5554 | 73730 |
| &nbsp;&nbsp;&nbsp;Class R1 | (19264) | (393710) | 1320 | 24687 | (977) | (16392) | 5995 | 119372 |
| &nbsp;&nbsp;&nbsp;Class R2 | (56570) | (1113575) | (176196) | (3471464) | (14946) | (320437) | (8449) | (148639) |
| &nbsp;&nbsp;&nbsp;Class R3 | (689804) | (14379375) | (1535854) | (30262199) | (260674) | (5393416) | (1376722) | (26854573) |
| &nbsp;&nbsp;&nbsp;Class R4 | (82785) | (1752367) | (121489) | (2552131) | (100436) | (2154560) | (33493) | (638903) |
| &nbsp;&nbsp;&nbsp;Class R6 | (399859) | (8275778) | 181056 | 3045149 | (592392) | (12113265) | 814702 | 15247206 |
|  | (1353909) | $(28123861) | (1449564) | $(29249942) | (1119294) | $(23110657) | (568060) | $(11672658) |
|  |  | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** |  |  | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** |  |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 92594 | $2335770 | 250343 | $5899239 | 95016 | $2080561 | 261600 | $5335824 |
| &nbsp;&nbsp;&nbsp;Class C | 16697 | 412277 | 46164 | 1063987 | 12017 | 256639 | 25784 | 516792 |
| &nbsp;&nbsp;&nbsp;Class I | 31730 | 811175 | 73767 | 1746238 | 18465 | 410001 | 27663 | 559467 |
| &nbsp;&nbsp;&nbsp;Class R1 | 2288 | 56829 | 6627 | 153296 | 13394 | 292219 | 33417 | 673612 |
| &nbsp;&nbsp;&nbsp;Class R2 | 67607 | 1706424 | 155151 | 3609203 | 78313 | 1714673 | 177510 | 3597276 |
| &nbsp;&nbsp;&nbsp;Class R3 | 450273 | 11297700 | 1391520 | 32616266 | 480408 | 10506009 | 1297525 | 26448100 |
| &nbsp;&nbsp;&nbsp;Class R4 | 130559 | 3299636 | 256018 | 6057367 | 81221 | 1796807 | 168939 | 3488758 |
| &nbsp;&nbsp;&nbsp;Class R6 | 1056264 | 26799631 | 2692574 | 63825076 | 1022452 | 22698108 | 2558127 | 52534427 |
|  | 1848012 | $46719442 | 4872164 | $114970672 | 1801286 | $39755017 | 4550565 | $93154256 |
| Shares issued to shareholders in |  |  |  |  |  |  |  |  |
| reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A |  | $— | 67032 | $1571222 |  | $— | 42633 | $862456 |
| &nbsp;&nbsp;&nbsp;Class B |  |  | 824 | 19174 |  |  | 608 | 12326 |
| &nbsp;&nbsp;&nbsp;Class C |  |  | 6739 | 154316 |  |  | 5045 | 100749 |
| &nbsp;&nbsp;&nbsp;Class I |  |  | 15792 | 370165 |  |  | 8823 | 178574 |
| &nbsp;&nbsp;&nbsp;Class R1 |  |  | 1487 | 34206 |  |  | 3450 | 68973 |
| &nbsp;&nbsp;&nbsp;Class R2 |  |  | 30208 | 700524 |  |  | 19420 | 393060 |
| &nbsp;&nbsp;&nbsp;Class R3 |  |  | 291045 | 6758067 |  |  | 214942 | 4348269 |
| &nbsp;&nbsp;&nbsp;Class R4 |  |  | 63244 | 1483697 |  |  | 24077 | 492125 |
| &nbsp;&nbsp;&nbsp;Class R6 |  |  | 564581 | 13216852 |  |  | 423422 | 8642040 |
|  |  | $— | 1040952 | $24308223 |  | $— | 742420 | $15098572 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime 2050 Fund - continued** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime 2050 Fund - continued** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime 2050 Fund - continued** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**MFS Lifetime 2050 Fund - continued** | **MFS Lifetime 2055 Fund - continued** | **MFS Lifetime 2055 Fund - continued** | **MFS Lifetime 2055 Fund - continued** | **MFS Lifetime 2055 Fund - continued** |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | **Shares** | &nbsp;&nbsp;&nbsp;&nbsp;**Amount** | **Shares** | &nbsp;&nbsp;**Amount** | **Shares** | **Amount** |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (105169) | $(2653177) | (292857) | $(6942116) | (95720) | $(2095875) | (442898) | $(9161299) |
| &nbsp;&nbsp;&nbsp;Class B | (2578) | (65264) | (10341) | (242582) | (4150) | (91677) | (6078) | (120850) |
| &nbsp;&nbsp;&nbsp;Class C | (25692) | (637909) | (64855) | (1491207) | (25019) | (540390) | (39352) | (786875) |
| &nbsp;&nbsp;&nbsp;Class I | (27056) | (688424) | (105138) | (2466867) | (12047) | (264718) | (35727) | (726076) |
| &nbsp;&nbsp;&nbsp;Class R1 | (1622) | (40484) | (5558) | (126658) | (2633) | (57279) | (13305) | (270634) |
| &nbsp;&nbsp;&nbsp;Class R2 | (101225) | (2561943) | (188622) | (4394532) | (108910) | (2385846) | (139133) | (2812274) |
| &nbsp;&nbsp;&nbsp;Class R3 | (562519) | (14140434) | (2403645) | (55955416) | (492955) | (10731625) | (1831187) | (37128745) |
| &nbsp;&nbsp;&nbsp;Class R4 | (175956) | (4431503) | (552469) | (13439891) | (89039) | (2007011) | (193684) | (4081311) |
| &nbsp;&nbsp;&nbsp;Class R6 | (1402216) | (35280417) | (2874899) | (68233231) | (1019407) | (22399573) | (2159615) | (44612901) |
|  | (2404033) | $(60499555) | (6498384) | $(153292500) | (1849880) | $(40573994) | (4860979) | $(99700965) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (12575) | $(317407) | 24518 | $528345 | (704) | $(15314) | (138665) | $(2963019) |
| &nbsp;&nbsp;&nbsp;Class B | (2578) | (65264) | (9517) | (223408) | (4150) | (91677) | (5470) | (108524) |
| &nbsp;&nbsp;&nbsp;Class C | (8995) | (225632) | (11952) | (272904) | (13002) | (283751) | (8523) | (169334) |
| &nbsp;&nbsp;&nbsp;Class I | 4674 | 122751 | (15579) | (350464) | 6418 | 145283 | 759 | 11965 |
| &nbsp;&nbsp;&nbsp;Class R1 | 666 | 16345 | 2556 | 60844 | 10761 | 234940 | 23562 | 471951 |
| &nbsp;&nbsp;&nbsp;Class R2 | (33618) | (855519) | (3263) | (84805) | (30597) | (671173) | 57797 | 1178062 |
| &nbsp;&nbsp;&nbsp;Class R3 | (112246) | (2842734) | (721080) | (16581083) | (12547) | (225616) | (318720) | (6332376) |
| &nbsp;&nbsp;&nbsp;Class R4 | (45397) | (1131867) | (233207) | (5898827) | (7818) | (210204) | (668) | (100428) |
| &nbsp;&nbsp;&nbsp;Class R6 | (345952) | (8480786) | 382256 | 8808697 | 3045 | 298535 | 821934 | 16563566 |
|  | (556021) | $(13780113) | (585268) | $(14013605) | (48594) | $(818977) | 432006 | $8551863 |
|  |  | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** |  |  | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** |  |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | **Shares** | &nbsp;&nbsp;&nbsp;&nbsp;**Amount** | **Shares** | &nbsp;&nbsp;**Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 108677 | $1930322 | 255431 | $4174027 | 87800 | $951417 | 131513 | $1336020 |
| &nbsp;&nbsp;&nbsp;Class C | 13426 | 233324 | 24092 | 390147 | 7141 | 77014 | 12423 | 124667 |
| &nbsp;&nbsp;&nbsp;Class I | 12899 | 229973 | 24517 | 413613 | 30215 | 323604 | 24542 | 251756 |
| &nbsp;&nbsp;&nbsp;Class R2 | 54462 | 960834 | 102284 | 1675585 | 16887 | 182962 | 142227 | 1377243 |
| &nbsp;&nbsp;&nbsp;Class R3 | 583541 | 10323942 | 1379541 | 22658595 | 236052 | 2554832 | 684934 | 6868477 |
| &nbsp;&nbsp;&nbsp;Class R4 | 52239 | 927476 | 121181 | 2003939 | 12151 | 134025 | 42481 | 438488 |
| &nbsp;&nbsp;&nbsp;Class R6 | 1104344 | 19774507 | 2501104 | 41383360 | 585384 | 6412581 | 1182786 | 11897351 |
|  | 1929588 | $34380378 | 4408150 | $72699266 | 975630 | $10636435 | 2220906 | $22294002 |
| Shares issued to shareholders in |  |  |  |  |  |  |  |  |
| reinvestment of distributions |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A |  | $— | 39194 | $640043 |  | $— | 5557 | $55684 |
| &nbsp;&nbsp;&nbsp;Class B |  |  | 314 | 5147 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class C |  |  | 2937 | 47552 |  |  | 729 | 7274 |
| &nbsp;&nbsp;&nbsp;Class I |  |  | 1601 | 26365 |  |  | 448 | 4499 |
| &nbsp;&nbsp;&nbsp;Class R1 |  |  | 230 | 3781 |  |  | 166 | 1666 |
| &nbsp;&nbsp;&nbsp;Class R2 |  |  | 8456 | 138005 |  |  | 1310 | 13113 |
| &nbsp;&nbsp;&nbsp;Class R3 |  |  | 145375 | 2376888 |  |  | 33732 | 337999 |
| &nbsp;&nbsp;&nbsp;Class R4 |  |  | 11986 | 197292 |  |  | 1983 | 19909 |
| &nbsp;&nbsp;&nbsp;Class R6 |  |  | 247187 | 4078592 |  |  | 45530 | 457579 |
|  |  | $— | 457280 | $7513665 |  | $— | 89455 | $897723 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2065 Fund - continued** | **MFS Lifetime 2065 Fund - continued** | **MFS Lifetime 2065 Fund - continued** | **MFS Lifetime 2065 Fund - continued** |
|  | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** | **Six Months Ended** | **Six Months Ended** | **Year ended** | **Year ended** |
|  | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** | **10/31/25** | **10/31/25** | **4/30/25** | **4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares reacquired |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (64457) | $(1142096) | (171341) | $(2816180) | (52163) | $(564551) | (65791) | $(666668) |
| &nbsp;&nbsp;&nbsp;Class B | (561) | (10024) | (1023) | (16928) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class C | (12913) | (225372) | (18067) | (295365) | (2654) | (28352) | (1817) | (18142) |
| &nbsp;&nbsp;&nbsp;Class I | (321) | (5768) | (8069) | (136693) | (1515) | (17388) | (2691) | (26985) |
| &nbsp;&nbsp;&nbsp;Class R2 | (34124) | (607002) | (74827) | (1228605) | (13498) | (145069) | (14396) | (143381) |
| &nbsp;&nbsp;&nbsp;Class R3 | (485058) | (8576191) | (1507083) | (24549952) | (177274) | (1906570) | (320700) | (3207989) |
| &nbsp;&nbsp;&nbsp;Class R4 | (67883) | (1213787) | (71482) | (1176850) | (2306) | (25883) | (2348) | (23546) |
| &nbsp;&nbsp;&nbsp;Class R6 | (899381) | (16016339) | (2018052) | (33662738) | (261361) | (2866760) | (532720) | (5405671) |
|  | (1564698) | $(27796579) | (3869944) | $(63883311) | (510771) | $(5554573) | (940463) | $(9492382) |
| Net change |  |  |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 44220 | $788226 | 123284 | $1997890 | 35637 | $386866 | 71279 | $725036 |
| &nbsp;&nbsp;&nbsp;Class B | (561) | (10024) | (709) | (11781) |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class C | 513 | 7952 | 8962 | 142334 | 4487 | 48662 | 11335 | 113799 |
| &nbsp;&nbsp;&nbsp;Class I | 12578 | 224205 | 18049 | 303285 | 28700 | 306216 | 22299 | 229270 |
| &nbsp;&nbsp;&nbsp;Class R1 |  |  | 230 | 3781 |  |  | 166 | 1666 |
| &nbsp;&nbsp;&nbsp;Class R2 | 20338 | 353832 | 35913 | 584985 | 3389 | 37893 | 129141 | 1246975 |
| &nbsp;&nbsp;&nbsp;Class R3 | 98483 | 1747751 | 17833 | 485531 | 58778 | 648262 | 397966 | 3998487 |
| &nbsp;&nbsp;&nbsp;Class R4 | (15644) | (286311) | 61685 | 1024381 | 9845 | 108142 | 42116 | 434851 |
| &nbsp;&nbsp;&nbsp;Class R6 | 204963 | 3758168 | 730239 | 11799214 | 324023 | 3545821 | 695596 | 6949259 |
|  | 364890 | $6583799 | 995486 | $16329620 | 464859 | $5081862 | 1369898 | $13699343 |

---

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, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the six months ended October 31, 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** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **Income Fund** | **2025 Fund** | **2030 Fund** | **2035 Fund** | **2040 Fund** |
| Commitment Fee | $1337 | $850 | $1750 | $1486 | $1889 |
| Interest Expense |  |  |  |  |  |
|  | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** | **MFS Lifetime** |
|  | **2045 Fund** | **2050 Fund** | **2055 Fund** | **2060 Fund** | **2065 Fund** |
| Commitment Fee | $1284 | $1340 | $909 | $535 | $74 |
| Interest Expense |  |  |  |  |  |

---

Notes to Financial Statements (unaudited) - continued

(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 six months ended October 31, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** | **MFS Lifetime Income Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $8977043 | $49867 | $2070478 | $471165 | $1382074 | $8809671 |
| MFS Blended Research Growth Equity Fund | 8983337 | 51718 | 2685433 | 1191673 | 1305203 | 8846498 |
| MFS Blended Research International Equity Fund | 13827039 | 586750 | 2241215 | 645922 | 2074200 | 14892696 |
| MFS Blended Research Mid Cap Equity Fund | 16562828 | 175483 | 2913611 | 120715 | 2065268 | 16010683 |
| MFS Blended Research Small Cap Equity Fund | 5514113 | 85849 | 1284084 | 18441 | 1036476 | 5370795 |
| MFS Blended Research Value Equity Fund | 11044059 | 85984 | 1669753 | 232684 | 1074109 | 10767083 |
| MFS Commodity Strategy Fund | 10844294 | 346048 | 1443390 | (95676) | 1189485 | 10840761 |
| MFS Emerging Markets Debt Fund | 5517060 | 146904 | 555338 | 7747 | 335832 | 5452205 |
| MFS Emerging Markets Debt Local Currency Fund | 5521050 | 78887 | 524002 | (29191) | 364691 | 5411435 |
| MFS Global Opportunistic Bond Fund | 38612226 | 854960 | 2206826 | (163462) | 859248 | 37956146 |
| MFS Global Real Estate Fund | 11050168 | 255186 | 1050360 | 63585 | 326869 | 10645448 |
| MFS Government Securities Fund | 52402994 | 1731759 | 2448861 | (317803) | 736109 | 52104198 |
| MFS Growth Fund | 8983350 | 220126 | 2243742 | 668195 | 1206432 | 8834361 |
| MFS High Income Fund | 11032870 | 370248 | 867902 | (7663) | 326885 | 10854438 |
| MFS Inflation-Adjusted Bond Fund | 55156231 | 1720596 | 2766819 | (315777) | 263203 | 54057434 |
| MFS Institutional Money Market Portfolio | 13576203 | 8325057 | 13061117 | 72 | 2181 | 8842396 |
| MFS International Growth Fund | 2764988 | 159933 | 289369 | 92376 | 224053 | 2951981 |
| MFS International Intrinsic Value Fund | 2764219 | 130844 | 334721 | 107186 | 295915 | 2963443 |
| MFS Limited Maturity Fund | 110283464 | 2900746 | 5040235 | (66167) | 432696 | 108510504 |
| MFS Mid Cap Growth Fund | 8297620 | 108019 | 1354441 | 553030 | 351224 | 7955452 |
| MFS Mid Cap Value Fund | 8274921 | 124245 | 1236064 | (17864) | 864584 | 8009822 |
| MFS New Discovery Fund | 2764392 | 36654 | 583256 | 219840 | 278146 | 2715776 |
| MFS New Discovery Value Fund | 2745809 | 151528 | 464211 | (6781) | 229024 | 2655369 |
| MFS Research Fund | 8978197 | 51074 | 1866241 | 633003 | 1019508 | 8815541 |
| MFS Research International Fund | 8294957 | 492015 | 723279 | 122472 | 698139 | 8884304 |
| MFS Total Return Bond Fund | 107555611 | 2844564 | 6651890 | (605521) | 2388291 | 105531055 |
| MFS Value Fund | 11044812 | 258385 | 1318699 | 340285 | 347385 | 10672168 |
|  | $551373855 | $22343429 | $59895337 | $3862486 | $21677230 | $539361663 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime Income Fund - continued** | **MFS Lifetime Income Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 136627 |  |
| MFS Emerging Markets Debt Local Currency Fund | 55082 |  |
| MFS Global Opportunistic Bond Fund | 686732 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Government Securities Fund | 1010849 |  |
| MFS Growth Fund |  | 163100 |
| MFS High Income Fund | 351806 |  |
| MFS Inflation-Adjusted Bond Fund | 1436008 |  |
| MFS Institutional Money Market Portfolio | 240470 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS Limited Maturity Fund | 2524405 |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 7239 | 83069 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 2303695 |  |
| MFS Value Fund | 101300 |  |
|  | $8854213 | $246169 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** | **MFS Lifetime 2025 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $6054762 | $65770 | $1833093 | $543919 | $659765 | $5491123 |
| MFS Blended Research Growth Equity Fund | 6094278 | 97603 | 2303030 | 961327 | 660773 | 5510951 |
| MFS Blended Research International Equity Fund | 9397490 | 260768 | 2135575 | 704696 | 1059851 | 9287230 |
| MFS Blended Research Mid Cap Equity Fund | 10878858 | 353499 | 2643149 | 361428 | 1055871 | 10006507 |
| MFS Blended Research Small Cap Equity Fund | 3492814 | 192536 | 993667 | 67431 | 598798 | 3357912 |
| MFS Blended Research Value Equity Fund | 7337216 | 98107 | 1563377 | 368387 | 477944 | 6718277 |
| MFS Commodity Strategy Fund | 6786060 | 402589 | 1117207 | 21002 | 666057 | 6758501 |
| MFS Emerging Markets Debt Fund | 3816210 | 100305 | 750190 | (82356) | 304279 | 3388248 |
| MFS Emerging Markets Debt Local Currency Fund | 3879050 | 61849 | 790438 | (39879) | 260941 | 3371523 |
| MFS Global Opportunistic Bond Fund | 24545457 | 713377 | 2065614 | (148236) | 577787 | 23622771 |
| MFS Global Real Estate Fund | 7064758 | 329806 | 1032901 | 54584 | 196754 | 6613001 |
| MFS Government Securities Fund | 33291501 | 1563132 | 2371326 | (312052) | 559284 | 32730539 |
| MFS Growth Fund | 6088938 | 221358 | 2034404 | 791878 | 437738 | 5505508 |
| MFS High Income Fund | 7638526 | 284837 | 1381869 | (54750) | 269948 | 6756692 |
| MFS Inflation-Adjusted Bond Fund | 34981787 | 1509770 | 2786871 | (332272) | 292693 | 33665107 |
| MFS Institutional Money Market Portfolio | 8694934 | 4151431 | 7540244 | (26) | 1403 | 5307498 |
| MFS International Growth Fund | 1938547 | 79961 | 387063 | 143483 | 67175 | 1842103 |
| MFS International Intrinsic Value Fund | 1937387 | 56544 | 410347 | 123528 | 143779 | 1850891 |
| MFS Limited Maturity Fund | 66547868 | 3521473 | 2756598 | (39123) | 263744 | 67537364 |
| MFS Mid Cap Growth Fund | 5507248 | 208253 | 1295239 | 478897 | 112465 | 5011624 |
| MFS Mid Cap Value Fund | 5399525 | 181049 | 1129714 | 142727 | 405844 | 4999431 |
| MFS New Discovery Fund | 1771550 | 77196 | 472218 | 60828 | 253283 | 1690639 |
| MFS New Discovery Value Fund | 1739411 | 157787 | 372752 | 12727 | 129492 | 1666665 |
| MFS Research Fund | 6055708 | 69134 | 1707918 | 597111 | 478909 | 5492944 |
| MFS Research International Fund | 5489624 | 313328 | 786939 | 190090 | 342261 | 5548364 |
| MFS Total Return Bond Fund | 66478927 | 2962536 | 4833640 | (550668) | 1648652 | 65705807 |
| MFS Value Fund | 7332608 | 188967 | 1308261 | 453350 | (2466) | 6664198 |
|  | $350241042 | $18222965 | $48803644 | $4518031 | $11923024 | $336101418 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2025 Fund - continued** | **MFS Lifetime 2025 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 88477 |  |
| MFS Emerging Markets Debt Local Currency Fund | 36206 |  |
| MFS Global Opportunistic Bond Fund | 429580 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Government Securities Fund | 632511 |  |
| MFS Growth Fund |  | 102926 |
| MFS High Income Fund | 228335 |  |
| MFS Inflation-Adjusted Bond Fund | 897327 |  |
| MFS Institutional Money Market Portfolio | 151688 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS Limited Maturity Fund | 1548330 |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 4486 | 51476 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 1425326 |  |
| MFS Value Fund | 64445 |  |
|  | $5506711 | $154402 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2030 Fund** | **MFS Lifetime 2030 Fund** |  |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $19811876 | $76319 | $4157240 | $989584 | $3169175 | $19889714 |
| MFS Blended Research Growth Equity Fund | 19646643 | 117289 | 5287827 | 2553060 | 3062534 | 20091699 |
| MFS Blended Research International Equity Fund | 31355010 | 191843 | 5332514 | 1925123 | 4033293 | 32172755 |
| MFS Blended Research Mid Cap Equity Fund | 31229887 | 303977 | 6081571 | 840024 | 3316203 | 29608520 |
| MFS Blended Research Small Cap Equity Fund | 7333442 | 175029 | 1486556 | 80542 | 1379946 | 7482403 |
| MFS Blended Research Value Equity Fund | 22853587 | 79255 | 3257698 | 447477 | 2265915 | 22388536 |
| MFS Commodity Strategy Fund | 15255413 | 331798 | 1887022 | (133939) | 1663793 | 15230043 |
| MFS Emerging Markets Debt Fund | 15547753 | 384361 | 1707082 | (282759) | 1236646 | 15178919 |
| MFS Emerging Markets Debt Local Currency Fund | 15018257 | 203112 | 1129563 | (131601) | 1043446 | 15003651 |
| MFS Global Opportunistic Bond Fund | 50909020 | 1946180 | 1007725 | (95993) | 1033235 | 52784717 |
| MFS Global Real Estate Fund | 15570062 | 235407 | 1484166 | 126651 | 421087 | 14869041 |
| MFS Government Securities Fund | 70920596 | 3775035 | 2224304 | (317894) | 879262 | 73032695 |
| MFS Growth Fund | 19699011 | 474590 | 4387014 | 1182399 | 3034643 | 20003629 |
| MFS High Income Fund | 29780868 | 1082238 | 1677222 | (121227) | 984480 | 30049137 |
| MFS Inflation-Adjusted Bond Fund | 72601583 | 3657735 | 1168591 | (154376) | 89666 | 75026017 |
| MFS Institutional Money Market Portfolio | 18882348 | 9512796 | 15186714 | (646) | 3591 | 13211375 |
| MFS International Growth Fund | 7819217 | 100886 | 872694 | 513317 | 352301 | 7913027 |
| MFS International Intrinsic Value Fund | 7825905 | 74139 | 1073942 | 456772 | 646579 | 7929453 |
| MFS International New Discovery Fund | 673560 |  | 711930 | 456474 | (407969) | 10135 |
| MFS Limited Maturity Fund | 67774490 | 7543682 |  |  | 238035 | 75556207 |
| MFS Mid Cap Growth Fund | 15807642 | 180925 | 2945284 | 1723818 | 17346 | 14784447 |
| MFS Mid Cap Value Fund | 15618719 | 142143 | 2524334 | 372654 | 1231255 | 14840437 |
| MFS New Discovery Fund | 3808547 | 53062 | 749103 | 172672 | 524021 | 3809199 |
| MFS New Discovery Value Fund | 3727016 | 224032 | 568218 | 2773 | 305223 | 3690826 |
| MFS Research Fund | 19775705 | 77310 | 3639895 | 1059698 | 2645711 | 19918529 |
| MFS Research International Fund | 15656823 | 224962 | 1425709 | 517838 | 993315 | 15967229 |
| MFS Total Return Bond Fund | 104109454 | 4977785 | 1491640 | (245240) | 2022678 | 109373037 |
| MFS Value Fund | 22909714 | 460254 | 2566112 | 585694 | 840824 | 22230374 |
|  | $741922148 | $36606144 | $76031670 | $12522895 | $37026234 | $752045751 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2030 Fund - continued** | **MFS Lifetime 2030 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 379478 |  |
| MFS Emerging Markets Debt Local Currency Fund | 150518 |  |
| MFS Global Opportunistic Bond Fund | 922850 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Government Securities Fund | 1374605 |  |
| MFS Growth Fund |  | 366246 |
| MFS High Income Fund | 958941 |  |
| MFS Inflation-Adjusted Bond Fund | 1927874 |  |
| MFS Institutional Money Market Portfolio | 332056 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Limited Maturity Fund | 1636955 |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 10024 | 115024 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 2287088 |  |
| MFS Value Fund | 209038 |  |
|  | $10189427 | $481270 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** | **MFS Lifetime 2035 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $23142287 | $52102 | $4280658 | $609867 | $4309886 | $23833484 |
| MFS Blended Research Emerging Markets Equity Fund | 298592 | 38 | 340518 | 122788 | (77862) | 3038 |
| MFS Blended Research Growth Equity Fund | 23570136 | 82818 | 6265007 | 2184099 | 4530148 | 24102194 |
| MFS Blended Research International Equity Fund | 39710985 | 164287 | 6546474 | 2286408 | 5251492 | 40866698 |
| MFS Blended Research Mid Cap Equity Fund | 44599773 | 665815 | 6557398 | 190721 | 5846870 | 44745781 |
| MFS Blended Research Small Cap Equity Fund | 9615630 | 265756 | 2047606 | 55372 | 1841266 | 9730418 |
| MFS Blended Research Value Equity Fund | 25012738 | 299131 | 2503009 | 111812 | 2946431 | 25867103 |
| MFS Commodity Strategy Fund | 18115920 | 802033 | 1143025 | (64269) | 1967226 | 19677885 |
| MFS Emerging Markets Debt Fund | 17378446 | 1589341 | 392792 | (60106) | 1237171 | 19752060 |
| MFS Emerging Markets Debt Local Currency Fund | 11801473 | 597172 | 125152 | (8884) | 767649 | 13032258 |
| MFS Emerging Markets Equity Fund | 298767 | 38 | 335431 | 142859 | (103209) | 3024 |
| MFS Global Opportunistic Bond Fund | 27670810 | 4533894 | 125913 | (12362) | 589202 | 32655631 |
| MFS Global Real Estate Fund | 19349484 | 381414 | 1169395 | 5297 | 674467 | 19241267 |
| MFS Government Securities Fund | 49409643 | 12327781 | 111059 | (16586) | 578776 | 62188555 |
| MFS Growth Fund | 23378908 | 715542 | 5136432 | 585173 | 4445480 | 23988671 |
| MFS High Income Fund | 23247248 | 2344663 | 231179 | (13575) | 712105 | 26059262 |
| MFS Inflation-Adjusted Bond Fund | 39191694 | 6435279 | 217115 | (27521) | 44587 | 45426924 |
| MFS Institutional Money Market Portfolio | 13350281 | 4519262 | 5596161 | (100) | 2501 | 12275783 |
| MFS International Growth Fund | 10112645 | 105196 | 1233303 | 331342 | 779523 | 10095403 |
| MFS International Intrinsic Value Fund | 10136332 | 71108 | 1522205 | 212514 | 1203194 | 10100943 |
| MFS International New Discovery Fund | 6871686 | 34140 | 807067 | 106200 | 450218 | 6655177 |
| MFS Limited Maturity Fund |  | 205744 |  |  | (356) | 205388 |
| MFS Mid Cap Growth Fund | 22775820 | 433895 | 3449241 | 410894 | 2117860 | 22289228 |
| MFS Mid Cap Value Fund | 21975804 | 399213 | 2262799 | (48498) | 2352194 | 22415914 |
| MFS New Discovery Fund | 4918682 | 88084 | 951403 | 137158 | 764075 | 4956596 |
| MFS New Discovery Value Fund | 4756713 | 276669 | 642722 | (8246) | 400792 | 4783206 |
| MFS Research Fund | 23042731 | 76835 | 3609353 | 375018 | 3996795 | 23882026 |
| MFS Research International Fund | 19271894 | 583696 | 1579598 | 166356 | 1708198 | 20150546 |
| MFS Total Return Bond Fund | 45634797 | 8982099 | 163197 | (17929) | 919916 | 55355686 |
| MFS Value Fund | 24924258 | 765987 | 1699619 | 46158 | 1539130 | 25575914 |
|  | $603564177 | $47799032 | $61044831 | $7801960 | $51795725 | $649916063 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2035 Fund - continued** | **MFS Lifetime 2035 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 469423 |  |
| MFS Emerging Markets Debt Local Currency Fund | 125283 |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Opportunistic Bond Fund | 545848 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Government Securities Fund | 1089902 |  |
| MFS Growth Fund |  | 429681 |
| MFS High Income Fund | 803822 |  |
| MFS Inflation-Adjusted Bond Fund | 1108648 |  |
| MFS Institutional Money Market Portfolio | 281737 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Limited Maturity Fund | 408 |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 12777 | 146611 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 1098538 |  |
| MFS Value Fund | 239190 |  |
|  | $5775576 | $576292 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** | **MFS Lifetime 2040 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $35921523 | $57457 | $4735822 | $439782 | $7390748 | $39073688 |
| MFS Blended Research Emerging Markets Equity Fund | 4092204 | 4132 | 910040 | 284588 | 828389 | 4299273 |
| MFS Blended Research Growth Equity Fund | 36598212 | 2809 | 7933631 | 2689082 | 7997324 | 39353796 |
| MFS Blended Research International Equity Fund | 67922794 | 278041 | 7918536 | 2524570 | 10676407 | 73483276 |
| MFS Blended Research Mid Cap Equity Fund | 70105928 | 922026 | 6103297 | (82364) | 9635247 | 74477540 |
| MFS Blended Research Small Cap Equity Fund | 15702087 | 389377 | 2515081 | (37163) | 3175083 | 16714303 |
| MFS Blended Research Value Equity Fund | 38486959 | 315269 | 1766903 | 72884 | 4717070 | 41825279 |
| MFS Commodity Strategy Fund | 29746941 | 2414845 | 1515564 | (71645) | 3298535 | 33873112 |
| MFS Emerging Markets Debt Fund | 20747732 | 3605396 | 365268 | (52051) | 1530662 | 25466471 |
| MFS Emerging Markets Debt Local Currency Fund | 14120835 | 1805715 | 66878 | (5330) | 942526 | 16796868 |
| MFS Emerging Markets Equity Fund | 4094094 | 1068 | 802244 | 306350 | 700528 | 4299796 |
| MFS Global Opportunistic Bond Fund | 20600633 | 4401012 | 132211 | (11637) | 458674 | 25316471 |
| MFS Global Real Estate Fund | 31483361 | 1410765 | 972785 | (5927) | 1115344 | 33030758 |
| MFS Government Securities Fund |  | 205065 |  |  | (614) | 204451 |
| MFS Growth Fund | 36370935 | 995580 | 6125142 | 488058 | 7454084 | 39183515 |
| MFS High Income Fund | 27771443 | 5110624 | 140048 | (9127) | 860567 | 33593459 |
| MFS Inflation-Adjusted Bond Fund | 35185933 | 7056463 | 291937 | (33307) | 61653 | 41978805 |
| MFS Institutional Money Market Portfolio | 14252012 | 6572899 | 8178664 | (435) | 2848 | 12648660 |
| MFS International Growth Fund | 20008634 | 374002 | 1277943 | 163483 | 2093793 | 21361969 |
| MFS International Intrinsic Value Fund | 20045192 | 289494 | 1762218 | 221023 | 2657741 | 21451232 |
| MFS International New Discovery Fund | 16316442 | 167250 | 838377 | 86869 | 1240485 | 16972669 |
| MFS Mid Cap Growth Fund | 35595525 | 675373 | 3251030 | 277201 | 3667251 | 36964320 |
| MFS Mid Cap Value Fund | 34679752 | 685086 | 1764798 | (49112) | 3712062 | 37262990 |
| MFS New Discovery Fund | 7980207 | 121032 | 1148983 | 135923 | 1351483 | 8439662 |
| MFS New Discovery Value Fund | 7788739 | 488423 | 696348 | (29788) | 667842 | 8218868 |
| MFS Research Fund | 35806030 | 59140 | 3748225 | 151543 | 6798582 | 39067070 |
| MFS Research International Fund | 27641994 | 1116767 | 1282516 | 84650 | 2634999 | 30195894 |
| MFS Total Return Bond Fund | 17842305 | 3248532 | 189537 | (16015) | 367556 | 21252841 |
| MFS Value Fund | 38380213 | 1275130 | 672635 | 12048 | 2444159 | 41438915 |
|  | $765288659 | $44048772 | $67106661 | $7534153 | $88481028 | $838245951 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2040 Fund - continued** | **MFS Lifetime 2040 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 590542 |  |
| MFS Emerging Markets Debt Local Currency Fund | 155847 |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Opportunistic Bond Fund | 418385 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Government Securities Fund | 285 |  |
| MFS Growth Fund |  | 709612 |
| MFS High Income Fund | 1006893 |  |
| MFS Inflation-Adjusted Bond Fund | 1022186 |  |
| MFS Institutional Money Market Portfolio | 276653 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 21856 | 250785 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 427492 |  |
| MFS Value Fund | 379133 |  |
|  | $4299272 | $960397 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** | **MFS Lifetime 2045 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $24044151 | $16211 | $2828628 | $211371 | $5032513 | $26475618 |
| MFS Blended Research Emerging Markets Equity Fund | 4066972 | 7944 | 739221 | 198389 | 914154 | 4448238 |
| MFS Blended Research Growth Equity Fund | 25958402 | 14579 | 5285698 | 1436855 | 6120401 | 28244539 |
| MFS Blended Research International Equity Fund | 52454363 | 110560 | 5761646 | 1515663 | 8633939 | 56952879 |
| MFS Blended Research Mid Cap Equity Fund | 49466374 | 738065 | 4287246 | (23716) | 6778371 | 52671848 |
| MFS Blended Research Small Cap Equity Fund | 11809768 | 297952 | 1817338 | (36909) | 2399171 | 12652644 |
| MFS Blended Research Value Equity Fund | 26927976 | 276220 | 1025879 | 38798 | 3323051 | 29540166 |
| MFS Commodity Strategy Fund | 22309469 | 1919271 | 818778 | (46426) | 2468726 | 25832262 |
| MFS Emerging Markets Debt Fund | 6644354 | 1408682 | 8834 | (49) | 481592 | 8525745 |
| MFS Emerging Markets Debt Local Currency Fund | 4499811 | 801284 | 3797 | (45) | 303093 | 5600346 |
| MFS Emerging Markets Equity Fund | 4069438 | 3006 | 639958 | 165120 | 841893 | 4439499 |
| MFS Global Opportunistic Bond Fund | 6598955 | 1670732 | 12703 | (153) | 146248 | 8403079 |
| MFS Global Real Estate Fund | 23720934 | 922617 | 532635 | (10224) | 844923 | 24945615 |
| MFS Growth Fund | 25737536 | 656392 | 4019286 | 221126 | 5392229 | 27987997 |
| MFS High Income Fund | 8873792 | 2054717 | 19475 | (457) | 273763 | 11182340 |
| MFS Inflation-Adjusted Bond Fund | 17652378 | 3453429 | 112621 | (12834) | 26194 | 21006546 |
| MFS Institutional Money Market Portfolio | 9601592 | 4577556 | 5754168 | (333) | 1964 | 8426611 |
| MFS International Growth Fund | 16127659 | 209804 | 879864 | 103753 | 1709404 | 17270756 |
| MFS International Intrinsic Value Fund | 16172817 | 127289 | 1270446 | 96710 | 2217756 | 17344126 |
| MFS International New Discovery Fund | 16202014 | 190407 | 719910 | 38684 | 1280923 | 16992118 |
| MFS Mid Cap Growth Fund | 25265986 | 514361 | 2369993 | 187826 | 2612944 | 26211124 |
| MFS Mid Cap Value Fund | 24387032 | 507245 | 1165328 | (25007) | 2612142 | 26316084 |
| MFS New Discovery Fund | 6038651 | 89140 | 832282 | 69625 | 1054379 | 6419513 |
| MFS New Discovery Value Fund | 5845721 | 382346 | 511253 | (14715) | 496028 | 6198127 |
| MFS Research Fund | 23938786 | 34577 | 2188633 | 58562 | 4594289 | 26437581 |
| MFS Research International Fund | 19919577 | 579757 | 797915 | 80381 | 1873831 | 21655631 |
| MFS Total Return Bond Fund | 10810599 | 1747531 | 65535 | (4159) | 214707 | 12703143 |
| MFS Value Fund | 26846892 | 918699 | 319421 | 6415 | 1714538 | 29167123 |
|  | $515991999 | $24230373 | $44788491 | $4254251 | $64363166 | $564051298 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2045 Fund - continued** | **MFS Lifetime 2045 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 192984 |  |
| MFS Emerging Markets Debt Local Currency Fund | 50609 |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Opportunistic Bond Fund | 136311 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Growth Fund |  | 498974 |
| MFS High Income Fund | 327899 |  |
| MFS Inflation-Adjusted Bond Fund | 510182 |  |
| MFS Institutional Money Market Portfolio | 184274 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 16414 | 188341 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 257324 |  |
| MFS Value Fund | 266109 |  |
|  | $1942106 | $687315 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** | **MFS Lifetime 2050 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $25858728 | $56819 | $2529806 | $118334 | $5597609 | $29101684 |
| MFS Blended Research Emerging Markets Equity Fund | 5628967 | 51013 | 811691 | 199587 | 1391138 | 6459014 |
| MFS Blended Research Growth Equity Fund | 28947158 | 116085 | 5226285 | 1318963 | 7287156 | 32443077 |
| MFS Blended Research International Equity Fund | 62291107 | 794830 | 4947549 | 1080799 | 11254215 | 70473402 |
| MFS Blended Research Mid Cap Equity Fund | 55844984 | 691853 | 2615519 | (88645) | 7742140 | 61574813 |
| MFS Blended Research Small Cap Equity Fund | 13975819 | 216980 | 1448837 | (90105) | 2914029 | 15567886 |
| MFS Blended Research Value Equity Fund | 30380322 | 522621 | 475034 | 10533 | 3820753 | 34259195 |
| MFS Commodity Strategy Fund | 26592099 | 2856963 | 833290 | (34710) | 2999233 | 31580295 |
| MFS Emerging Markets Debt Fund |  | 45064 |  |  | 425 | 45489 |
| MFS Emerging Markets Debt Local Currency Fund |  | 30012 |  |  | (11) | 30001 |
| MFS Emerging Markets Equity Fund | 5632749 | 66525 | 681397 | 167465 | 1273703 | 6459045 |
| MFS Global Opportunistic Bond Fund |  | 45042 |  |  | (53) | 44989 |
| MFS Global Real Estate Fund | 28009554 | 1981590 | 273714 | (11770) | 1003577 | 30709237 |
| MFS Growth Fund | 28819744 | 1147173 | 3989595 | 81129 | 6296568 | 32355019 |
| MFS High Income Fund |  | 60151 |  |  | (63) | 60088 |
| MFS Inflation-Adjusted Bond Fund | 13187875 | 2508450 | 77402 | (6836) | 11680 | 15623767 |
| MFS Institutional Money Market Portfolio | 10477821 | 4044442 | 5092033 | (285) | 2077 | 9432022 |
| MFS International Growth Fund | 19763756 | 886751 | 817595 | 35715 | 2239318 | 22107945 |
| MFS International Intrinsic Value Fund | 19786302 | 663243 | 1103353 | 51227 | 2851072 | 22248491 |
| MFS International New Discovery Fund | 22458312 | 1233938 | 436066 | 8103 | 1837950 | 25102237 |
| MFS Mid Cap Growth Fund | 28247246 | 1105933 | 1765949 | 22493 | 3107799 | 30717522 |
| MFS Mid Cap Value Fund | 27618673 | 774939 | 519467 | (18445) | 2956535 | 30812235 |
| MFS New Discovery Fund | 7073781 | 125546 | 678093 | 42492 | 1297480 | 7861206 |
| MFS New Discovery Value Fund | 6941128 | 499528 | 335303 | (28610) | 593342 | 7670085 |
| MFS Research Fund | 25806253 | 215469 | 1956041 | 21686 | 5050926 | 29138293 |
| MFS Research International Fund | 22559441 | 1373812 | 774660 | 20593 | 2230985 | 25410171 |
| MFS Total Return Bond Fund | 10545415 | 1859046 | 94958 | (1167) | 211410 | 12519746 |
| MFS Value Fund | 30315255 | 1801847 | 184107 | 737 | 1954360 | 33888092 |
|  | $556762489 | $25775665 | $37667744 | $2899283 | $75925353 | $623695046 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2050 Fund - continued** | **MFS Lifetime 2050 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Debt Fund | 93 |  |
| MFS Emerging Markets Debt Local Currency Fund | 27 |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Opportunistic Bond Fund | 65 |  |
| MFS Global Real Estate Fund |  |  |
| MFS Growth Fund |  | 581313 |
| MFS High Income Fund | 147 |  |
| MFS Inflation-Adjusted Bond Fund | 389380 |  |
| MFS Institutional Money Market Portfolio | 202663 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 20088 | 230508 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 254497 |  |
| MFS Value Fund | 306858 |  |
|  | $1173818 | $811821 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** | **MFS Lifetime 2055 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $17662747 | $12473 | $1249188 | $49215 | $3897436 | $20372683 |
| MFS Blended Research Emerging Markets Equity Fund | 3857885 | 39062 | 444261 | 86774 | 1014880 | 4554340 |
| MFS Blended Research Growth Equity Fund | 19918213 | 25 | 3096144 | 461066 | 5503943 | 22787103 |
| MFS Blended Research International Equity Fund | 42917998 | 379024 | 2426673 | 421800 | 8105012 | 49397161 |
| MFS Blended Research Mid Cap Equity Fund | 38114141 | 1101739 | 1338492 | (27353) | 5289473 | 43139508 |
| MFS Blended Research Small Cap Equity Fund | 9545412 | 142863 | 737746 | (56372) | 2003537 | 10897694 |
| MFS Blended Research Value Equity Fund | 20783299 | 701980 | 189681 | 2564 | 2636676 | 23934838 |
| MFS Commodity Strategy Fund | 18277962 | 2253663 | 458293 | (21968) | 2077991 | 22129355 |
| MFS Emerging Markets Equity Fund | 3860289 | 48003 | 354877 | 69180 | 928803 | 4551398 |
| MFS Global Real Estate Fund | 19159536 | 1803788 | 127328 | (7384) | 687683 | 21516295 |
| MFS Growth Fund | 19768328 | 631267 | 2108139 | (17847) | 4422467 | 22696076 |
| MFS Inflation-Adjusted Bond Fund | 9161329 | 1760015 | 29366 | (2925) | 6960 | 10896013 |
| MFS Institutional Money Market Portfolio | 7230422 | 2645452 | 3360157 | (212) | 1423 | 6516928 |
| MFS International Growth Fund | 13592273 | 698299 | 353518 | 17748 | 1550422 | 15505224 |
| MFS International Intrinsic Value Fund | 13630273 | 386813 | 455602 | 1096 | 2000634 | 15563214 |
| MFS International New Discovery Fund | 15372079 | 1056435 | 81665 | (1522) | 1265752 | 17611079 |
| MFS Mid Cap Growth Fund | 19411179 | 1074064 | 1058482 | (9364) | 2165552 | 21582949 |
| MFS Mid Cap Value Fund | 18864615 | 902969 | 199381 | (2659) | 2019498 | 21585042 |
| MFS New Discovery Fund | 4866876 | 92886 | 379617 | 5268 | 920744 | 5506157 |
| MFS New Discovery Value Fund | 4730988 | 420090 | 155089 | (11178) | 398329 | 5383140 |
| MFS Research Fund | 17627734 | 128520 | 860100 | 6863 | 3492736 | 20395753 |
| MFS Research International Fund | 15494025 | 974192 | 241352 | 6914 | 1541517 | 17775296 |
| MFS Total Return Bond Fund | 7328895 | 1299115 | 32900 | (2077) | 148402 | 8741435 |
| MFS Value Fund | 20754154 | 1725316 | 81230 | 460 | 1338950 | 23737650 |
|  | $381930652 | $20278053 | $19819281 | $968087 | $53418820 | $436776331 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2055 Fund - continued** | **MFS Lifetime 2055 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Real Estate Fund |  |  |
| MFS Growth Fund |  | 402884 |
| MFS Inflation-Adjusted Bond Fund | 268824 |  |
| MFS Institutional Money Market Portfolio | 141694 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 13894 | 159425 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 176328 |  |
| MFS Value Fund | 211984 |  |
|  | $812724 | $562309 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** | **MFS Lifetime 2060 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $10021197 | $232220 | $645150 | $21479 | $2249709 | $11879455 |
| MFS Blended Research Emerging Markets Equity Fund | 2182012 | 105102 | 282377 | 37659 | 598360 | 2640756 |
| MFS Blended Research Growth Equity Fund | 11178984 | 159489 | 1560139 | 140606 | 3278424 | 13197364 |
| MFS Blended Research International Equity Fund | 24363660 | 1064150 | 1492639 | 106555 | 4816463 | 28858189 |
| MFS Blended Research Mid Cap Equity Fund | 21639785 | 1501135 | 611189 | (13241) | 3022837 | 25539327 |
| MFS Blended Research Small Cap Equity Fund | 5373112 | 328418 | 422043 | (28176) | 1148389 | 6399700 |
| MFS Blended Research Value Equity Fund | 11874152 | 957200 | 263600 | 526 | 1523555 | 14091833 |
| MFS Commodity Strategy Fund | 10558533 | 1952044 | 780019 | 2418 | 1216683 | 12949659 |
| MFS Emerging Markets Equity Fund | 2185372 | 121688 | 243196 | 28987 | 548198 | 2641049 |
| MFS Global Real Estate Fund | 10929549 | 1636675 | 220283 | (9028) | 398399 | 12735312 |
| MFS Growth Fund | 11176195 | 775716 | 1294181 | 3340 | 2526636 | 13187706 |
| MFS Inflation-Adjusted Bond Fund | 5474426 | 1060653 | 100792 | (10542) | 11208 | 6434953 |
| MFS Institutional Money Market Portfolio | 4404968 | 2232903 | 2747532 | (133) | 858 | 3891064 |
| MFS International Growth Fund | 7725370 | 804504 | 338846 | 8643 | 901168 | 9100839 |
| MFS International Intrinsic Value Fund | 7744395 | 545257 | 295856 | (4243) | 1161792 | 9151345 |
| MFS International New Discovery Fund | 8907219 | 1035925 | 269666 | (945) | 730279 | 10402812 |
| MFS Mid Cap Growth Fund | 10971987 | 1129520 | 533411 | (3785) | 1227942 | 12792253 |
| MFS Mid Cap Value Fund | 10741029 | 1066470 | 193146 | (7567) | 1162977 | 12769763 |
| MFS New Discovery Fund | 2729677 | 181469 | 224823 | 735 | 532526 | 3219584 |
| MFS New Discovery Value Fund | 2680698 | 393356 | 103469 | (8588) | 229207 | 3191204 |
| MFS Research Fund | 10029661 | 408860 | 557032 | 4722 | 2010800 | 11897011 |
| MFS Research International Fund | 8833855 | 983722 | 285041 | 4381 | 892611 | 10429528 |
| MFS Total Return Bond Fund | 4374292 | 792021 | 99394 | (2123) | 87947 | 5152743 |
| MFS Value Fund | 11883594 | 1554985 | 159536 | (462) | 770919 | 14049500 |
|  | $217983722 | $21023482 | $13723360 | $271218 | $31047887 | $256602949 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2060 Fund - continued** | **MFS Lifetime 2060 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Real Estate Fund |  |  |
| MFS Growth Fund |  | 231208 |
| MFS Inflation-Adjusted Bond Fund | 159292 |  |
| MFS Institutional Money Market Portfolio | 81908 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 8031 | 92151 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 104096 |  |
| MFS Value Fund | 124099 |  |
|  | $477426 | $323359 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** | **MFS Lifetime 2065 Fund** |  |
|  |  |  |  |  | **Change in** |  |
|  |  |  |  | **Realized** | **Unrealized** |  |
|  | **Beginning** |  | **Sales** | **Gain** | **Appreciation or** | **Ending** |
| **Affiliated Issuers** | **Value** | **Purchases** | **Proceeds** | (Loss) | **Depreciation** | **Value** |
| MFS Blended Research Core Equity Fund | $1513032 | $243700 | $129598 | $(874) | $356393 | $1982653 |
| MFS Blended Research Emerging Markets Equity Fund | 327114 | 55635 | 45193 | 1640 | 98330 | 437526 |
| MFS Blended Research Growth Equity Fund | 1682677 | 223980 | 232920 | 2346 | 532427 | 2208510 |
| MFS Blended Research International Equity Fund | 3598301 | 723305 | 291394 | 4162 | 763852 | 4798226 |
| MFS Blended Research Mid Cap Equity Fund | 3271180 | 782867 | 249631 | (6103) | 468332 | 4266645 |
| MFS Blended Research Small Cap Equity Fund | 817746 | 178115 | 103674 | (8591) | 183945 | 1067541 |
| MFS Blended Research Value Equity Fund | 1799147 | 424617 | 112540 | (4965) | 243118 | 2349377 |
| MFS Commodity Strategy Fund | 1635045 | 460933 | 146303 | 2698 | 191505 | 2143878 |
| MFS Emerging Markets Equity Fund | 327119 | 58827 | 38398 | 1028 | 89704 | 438280 |
| MFS Global Real Estate Fund | 1635585 | 528413 | 91550 | (7630) | 66311 | 2131129 |
| MFS Growth Fund | 1676782 | 333404 | 197877 | 146 | 393385 | 2205840 |
| MFS Inflation-Adjusted Bond Fund | 817739 | 302795 | 50354 | (939) | 1197 | 1070438 |
| MFS Institutional Money Market Portfolio | 639795 | 1640505 | 1626623 | (38) | 144 | 653783 |
| MFS International Growth Fund | 1144892 | 308739 | 74955 | 364 | 141306 | 1520346 |
| MFS International Intrinsic Value Fund | 1144879 | 288402 | 89972 | 750 | 179606 | 1523665 |
| MFS International New Discovery Fund | 1308452 | 393640 | 75108 | (337) | 110262 | 1736909 |
| MFS Mid Cap Growth Fund | 1635787 | 429677 | 115686 | (1122) | 184759 | 2133415 |
| MFS Mid Cap Value Fund | 1635476 | 425180 | 105512 | (10097) | 188277 | 2133324 |
| MFS New Discovery Fund | 408931 | 88127 | 44725 | (359) | 83733 | 535707 |
| MFS New Discovery Value Fund | 408853 | 124618 | 34120 | (2912) | 36737 | 533176 |
| MFS Research Fund | 1513021 | 275288 | 120872 | (1278) | 316248 | 1982407 |
| MFS Research International Fund | 1308453 | 371270 | 79204 | 238 | 139087 | 1739844 |
| MFS Total Return Bond Fund | 654205 | 231340 | 42040 | (513) | 14151 | 857143 |
| MFS Value Fund | 1799186 | 524543 | 95478 | (4262) | 122942 | 2346931 |
|  | $32703397 | $9417920 | $4193727 | $(36648) | $4905751 | $42796693 |

---

Notes to Financial Statements (unaudited) - continued

---

| | | |
|:---|:---|:---|
|  | **MFS Lifetime 2065 Fund - continued** | **MFS Lifetime 2065 Fund - continued** |
|  | **Dividend** | **Capital Gain** |
| **Affiliated Issuers** | **Income** | **Distributions** |
| MFS Blended Research Core Equity Fund | $— | $— |
| MFS Blended Research Emerging Markets Equity Fund |  |  |
| MFS Blended Research Growth Equity Fund |  |  |
| MFS Blended Research International Equity Fund |  |  |
| MFS Blended Research Mid Cap Equity Fund |  |  |
| MFS Blended Research Small Cap Equity Fund |  |  |
| MFS Blended Research Value Equity Fund |  |  |
| MFS Commodity Strategy Fund |  |  |
| MFS Emerging Markets Equity Fund |  |  |
| MFS Global Real Estate Fund |  |  |
| MFS Growth Fund |  | 35840 |
| MFS Inflation-Adjusted Bond Fund | 25138 |  |
| MFS Institutional Money Market Portfolio | 12625 |  |
| MFS International Growth Fund |  |  |
| MFS International Intrinsic Value Fund |  |  |
| MFS International New Discovery Fund |  |  |
| MFS Mid Cap Growth Fund |  |  |
| MFS Mid Cap Value Fund |  |  |
| MFS New Discovery Fund |  |  |
| MFS New Discovery Value Fund | 1261 | 14470 |
| MFS Research Fund |  |  |
| MFS Research International Fund |  |  |
| MFS Total Return Bond Fund | 16470 |  |
| MFS Value Fund | 19649 |  |
|  | $75143 | $50310 |

---

**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.**

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 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.**

**BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT**

The Investment Company Act of 1940 requires that both the full Board of Trustees and a majority of the non-interested ("independent") Trustees, voting separately, annually approve the continuation of the Funds' investment advisory agreements with MFS. The Trustees consider matters bearing on the Funds and their advisory arrangements at their meetings throughout the year, including a review of performance data at each regular meeting. In addition, the independent Trustees met several times over the course of three months beginning in May and ending in July, 2025 ("contract review meetings") for the specific purpose of considering whether to approve the continuation of the investment advisory agreements for the Funds and the other investment companies that the Board oversees (the "MFS Funds"). The independent Trustees were assisted in their evaluation of the Funds' investment advisory agreements by independent legal counsel, from whom they received separate legal advice and with whom they met separately from MFS during various contract review meetings. The independent Trustees were also assisted in this process by an independent consultant who was retained by and reported to the independent Trustees.

In connection with their deliberations regarding the continuation of the investment advisory agreements, the Trustees, including the independent Trustees, considered such information and factors as they believed, in light of the legal advice furnished to them and their own business judgment, to be relevant. The investment advisory agreements for the Funds were considered separately, although the Trustees also took into account the common interests of all MFS Funds in their review. As described below, the Trustees considered the nature, quality, and extent of the various investment advisory, administrative, and shareholder services performed by MFS under the existing investment advisory agreements and other arrangements with the Funds.

In connection with their contract review meetings, the Trustees received and relied upon materials that included, among other items: (i) information provided by Broadridge Financial Solutions, Inc. ("Broadridge"), an independent third party, on the investment performance of the Funds for various time periods ended December 31, 2024 and the investment performance of a group of funds with substantially similar investment classifications/objectives (the "Broadridge performance universe"), (ii) information provided by Broadridge on the Funds' fees and expenses and the fees and expenses of comparable funds identified by Broadridge as well as all other funds in the same investment classification/category (the "Broadridge expense group and universe"), (iii) information as to whether and to what extent applicable expense waivers and reimbursements are observed for the Funds, (iv) information regarding MFS' financial results and financial condition, including MFS' and certain of its affiliates' estimated profitability from services performed for the Funds and the MFS Funds as a whole, and compared to MFS' institutional business, (v) MFS' views regarding the outlook for the mutual fund industry and the strategic business plans of MFS, (vi) descriptions of various functions performed by MFS for the Funds, such as compliance monitoring and portfolio trading practices, and (vii) information regarding the overall organization of MFS, including information about MFS' senior management and other personnel providing investment advisory, administrative and other services to the Funds and the other MFS Funds. The comparative performance, fee and expense information prepared and provided by Broadridge was not independently verified and the independent Trustees did not independently verify any information provided to them by MFS.

The Trustees' conclusion as to the continuation of the investment advisory agreements was based on a comprehensive consideration of all information provided to the Trustees and not the result of any single factor. Some of the factors that figured particularly in the Trustees' deliberations are described below, although individual Trustees may have evaluated the information presented differently from one another, giving different weights to various factors. It is also important to recognize that the fee arrangements for the Funds and other MFS Funds are the result of years of review and discussion between the independent Trustees and MFS, that certain aspects of such arrangements may receive greater scrutiny in some years than in others, and that the Trustees' conclusions may be based, in part, on their consideration of these same arrangements during the course of the year and in prior years.

**MFS Lifetime Income Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 2nd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 2nd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

Board Review of Investment Advisory Agreement - continued

**MFS Lifetime 2025 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 4th quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 5th quintile for the one-year period and the 3rd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2030 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 3rd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 5th quintile for the one-year period and the 3rd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2035 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 1st quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 2nd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2040 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 2nd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 2nd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2045 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 3rd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 3rd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2050 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 3rd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 3rd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

Board Review of Investment Advisory Agreement - continued

**MFS Lifetime 2055 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 3rd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 3rd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2060 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 3rd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 4th quintile for the one-year period and the 3rd quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe.

**MFS Lifetime 2065 Fund**

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the three-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 4th quintile relative to the other funds in the universe for each of the three- and one-year periods (the 1st quintile being the best performers and the 5th quintile being the worst performers). The Fund commenced operations on September 1, 2021; therefore, no performance data for the five-year period was available. Because of the passage of time, these performance results may differ from the performance results for more recent periods, including those shown elsewhere in this report.

**General**

Because of the passage of time, the performance results stated above may differ from the performance results for more recent periods, including those shown elsewhere in this report.

In the course of their deliberations, the Trustees took into account information provided by MFS in connection with the contract review meetings, as well as during investment review meetings conducted with portfolio management personnel during the course of the year regarding the Funds' performance. The Trustees noted the structure of the Funds' portfolios and considered MFS' strategic, long-term allocation process with respect to the Funds' underlying investments. After reviewing these and related factors, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreements, that they were satisfied with MFS' responses and efforts relating to investment performance.

The Trustees considered that MFS does not charge any advisory fees for providing investment advisory services to the Funds, but that the Funds pay their pro rata share of the advisory fees paid by the underlying funds in which they invest (the "Underlying Funds").

In assessing the reasonableness of the Funds' expenses, the Trustees considered, among other information, the total expense ratios of the Funds' Class I shares as a percentage of average daily net assets and the total expense ratios of the Broadridge expense groups based on information provided by Broadridge. The Trustees considered that MFS currently observes an expense limitation for each Fund, which may not be changed without the Trustees' approval. The Trustees also considered that, according to the data provided by Broadridge (which takes into account any expense limitations that were in effect during the Funds' last fiscal year), the total expense ratio for each 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 was approximately at the Broadridge expense group median. Because the Funds do not pay advisory fees, the Trustees did not consider the extent to which economies of scale would be realized due to the Funds' growth of assets, whether fee levels reflect economies of scale for the Funds' shareholders, or the fees paid by similar funds to other investment advisers or by similar clients of MFS.

The Trustees also considered information prepared by MFS relating to MFS' costs and profits with respect to the Funds, the MFS Funds considered as a group, and other investment companies and accounts advised by MFS, as well as MFS' methodologies used to determine and allocate its costs to the MFS Funds, the Funds and other accounts and products for purposes of estimating profitability.

Board Review of Investment Advisory Agreement - continued

In addition, the Trustees considered MFS' resources and related efforts to continue to retain, attract and motivate capable personnel to serve the Funds. The Trustees also considered current and developing conditions in the financial services industry, including the presence of large and well-capitalized companies which are spending, and appear to be prepared to continue to spend, substantial sums to engage personnel and to provide services to competing investment companies. In this regard, the Trustees also considered the financial resources of MFS and its ultimate parent, Sun Life Financial Inc. The Trustees also considered the advantages and possible disadvantages to the Funds of having an adviser that also serves other investment companies as well as other accounts.

The Trustees also considered the nature, quality, cost, and extent of administrative, transfer agency, and distribution services provided to the Funds by MFS and its affiliates under agreements and plans other than the investment advisory agreements, including any

12b-1 fees the Funds pay to MFS Fund Distributors, Inc., an affiliate of MFS. The Trustees also considered the nature, extent and quality of certain other services MFS performs or arranges for on the Funds' or the Underlying Funds' behalf, which may include securities lending programs, directed expense payment programs, class action recovery programs, and MFS' interaction with third-party service providers, principally custodians and sub-custodians. The Trustees concluded that the various non-advisory services provided by MFS and its affiliates on behalf of the Funds were satisfactory.

The Trustees considered so-called "fall-out benefits" to MFS such as reputational value derived from serving as investment manager to the MFS Funds. The Trustees also considered that MFS discontinued its historic practice of obtaining investment research from portfolio brokerage commissions paid by certain MFS Funds effective January 2018, and directly pays or voluntarily reimburses a Fund, if applicable, for the costs of external research acquired through the use of the Fund's portfolio brokerage commissions.

Based on their evaluation of factors that they deemed to be material, including those factors described above, the Board of Trustees, including the independent Trustees, concluded that the Funds' investment advisory agreements with MFS should be continued for an additional one-year period, commencing August 1, 2025.

------

MFS Core Bond Fund

**ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.**

MFS Core Bond Fund

**Portfolio of Investments - 10/31/25 (unaudited)**

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** | **Value ($)** |
| Bonds – 97.8% | Bonds – 97.8% | Bonds – 97.8% |
| Asset-Backed & Securitized – 18.2% | Asset-Backed & Securitized – 18.2% | Asset-Backed & Securitized – 18.2% |
| Affirm, Inc., 2025-X1, "A", 5.08%, 4/15/2030 (n) | $53823 | &nbsp;&nbsp; $53929 |
| AmeriCredit Automobile Receivables Trust, 2024-1, "A2-A", 5.75%, 2/18/2028  | 4166 | &nbsp;&nbsp; 4170 |
| Angel Oak Mortgage Trust, 2024-10, "A1", 5.348%, 10/25/2069 (n) | 88039 | &nbsp;&nbsp; 88420 |
| Angel Oak Mortgage Trust, 2024-12, "A1", 5.653%, 10/25/2069 (n) | 82006 | &nbsp;&nbsp; 82598 |
| Angel Oak Mortgage Trust, 2024-9, "A1", 5.138%, 9/25/2069 (n) | 49123 | &nbsp;&nbsp; 49038 |
| Angel Oak Mortgage Trust, 2025 10, "A1" , 4.96%, 9/25/2070 (n) | 50000 | &nbsp;&nbsp; 49990 |
| ARDN Mortgage Trust, 2025-ARCP, "A", FLR, 5.782% (SOFR - 1mo. + 1.75%), 6/15/2035 (n) | 158000 | &nbsp;&nbsp; 158296 |
| ARI Fleet Lease Trust, 2023-B, "A2", 6.05%, 7/15/2032 (n) | 38567 | &nbsp;&nbsp; 38868 |
| Bain Capital Credit CLO Ltd., 2020-3A, "BRR", FLR, 5.46% (SOFR - 3mo. + 1.6%), 10/23/2034 (n) | 200000 | &nbsp;&nbsp; 200139 |
| Bain Capital Credit CLO Ltd., 2022-1A, "CR", FLR, 5.734% (SOFR - 3mo. + 1.85%), 10/18/2038 (n) | 250000 | &nbsp;&nbsp; 250000 |
| Bank5, 2025-5YR17, "A3", 5.225%, 11/15/2058  | 74140 | &nbsp;&nbsp; 76526 |
| Benchmark 2023-V3 Mortgage Trust, "A3", 6.363%, 7/15/2056  | 10878 | &nbsp;&nbsp; 11383 |
| Benchmark 2025-V18 Mortgage Trust, "A3", 5.183%, 10/15/2058  | 72019 | &nbsp;&nbsp; 74126 |
| Business Jet Securities LLC, 2024-1A, "A", 6.197%, 5/15/2039 (n) | 77829 | &nbsp;&nbsp; 79766 |
| BX Trust, 2025-BCAT, "A", FLR, 5.412% (SOFR - 1mo. + 1.38%), 8/15/2042 (n) | 95829 | &nbsp;&nbsp; 95888 |
| Chesapeake Funding II LLC, 2023-1A, "A1", 5.65%, 5/15/2035 (n) | 30296 | &nbsp;&nbsp; 30465 |
| Colt Funding LLC, 2024-5, "A1", 5.123%, 8/25/2069 (n) | 79628 | &nbsp;&nbsp; 79632 |
| Commercial Mortgage Pass-Through Certificates, 2023-BNK46, "A4", 5.745%, 8/15/2056  | 145414 | &nbsp;&nbsp; 154128 |
| Consumers 2023 Securitization Funding LLC, 5.55%, 3/01/2028  | 18955 | &nbsp;&nbsp; 19230 |
| Dryden Senior Loan Fund CLO Ltd., 2019-68A, "BRR", FLR, 5.455% (SOFR - 3mo. + 1.55%), 7/15/2035 (n) | 250000 | &nbsp;&nbsp; 250163 |
| Dryden Senior Loan Fund CLO Ltd., 2020-86A, "BR2", FLR, 5.482% (SOFR - 3mo. + 1.6%), 7/17/2034 (n) | 250000 | &nbsp;&nbsp; 250170 |
| Dryden Senior Loan Fund CLO Ltd., 2022-113A, "AR3", FLR, 4.995% (SOFR - 3mo. + 1.09%), 10/15/2037 (n) | 250000 | &nbsp;&nbsp; 250287 |
| Dwight 2025-FL1 Issuer LLC, "A", FLR, 5.693% (SOFR - 1mo. + 1.662%), 6/18/2042 (n) | 91000 | &nbsp;&nbsp; 91389 |
| ELM Trust, 2024-ELM, "B10", 5.995%, 6/10/2039 (n) | 100000 | &nbsp;&nbsp; 100937 |
| Empire District Bondco LLC, 4.943%, 1/01/2033  | 35323 | &nbsp;&nbsp; 35764 |
| Enterprise Fleet Financing 2023-1 LLC, "A2", 5.51%, 1/22/2029 (n) | 10249 | &nbsp;&nbsp; 10271 |
| Enterprise Fleet Financing 2024-4 LLC, "A2", 4.69%, 7/20/2027 (n) | 41682 | &nbsp;&nbsp; 41802 |
| Greystone Commercial Real Estate Notes, 2025-FL4, "AS", FLR, 6.171% (SOFR - 1mo. + 2.1385%), 1/15/2043 (n) | 100000 | &nbsp;&nbsp; 100156 |
| Hyundai Auto Lease Securitization Trust, 2025-B, 4.58%, 9/15/2027 (n) | 98070 | &nbsp;&nbsp; 98402 |
| KREF 2018-FT1 Ltd., "A", FLR, 5.216% ((SOFR - 1mo. + 0.11448%) + 1.07%), 2/15/2039 (n) | 97486 | &nbsp;&nbsp; 97417 |
| LoanCore 2021-CRE5 Ltd., "B", FLR, 6.146% ((SOFR - 1mo. + 0.11448%) + 2.0%), 7/15/2036 (n) | 100000 | &nbsp;&nbsp; 99749 |
| MF1 2021-FL7 Ltd., "AS", FLR, 5.588% ((SOFR - 1mo. + 0.11448%) + 1.45%), 10/16/2036 (n) | 250000 | &nbsp;&nbsp; 249632 |
| MF1 2022-FL10 Ltd., "AS", FLR, 7.189% (SOFR - 1mo. + 3.187%), 9/17/2037 (n) | 250000 | &nbsp;&nbsp; 250000 |
| MF1 2022-FL8 Ltd., "B", FLR, 5.952% (SOFR - 30 day + 1.95%), 2/19/2037 (n) | 100000 | &nbsp;&nbsp; 99623 |
| MF1 2024-FL15 LLC, "AS", FLR, 6.071% (SOFR - 1mo. + 2.04%), 8/18/2041 (n) | 100000 | &nbsp;&nbsp; 100218 |
| MF1 2024-FL16 LLC, "A", FLR, 5.572% (SOFR - 1mo. + 1.541%), 11/18/2039 (n) | 154790 | &nbsp;&nbsp; 155451 |
| MF1 2025-FL19 LLC, "A", FLR, 5.519% (SOFR - 1mo. + 1.4881%), 5/18/2042 (n) | 100000 | &nbsp;&nbsp; 100279 |
| MF1 2025-FL20, "AS", FLR, 5.731% (SOFR - 1mo. + 1.7%), 2/18/2043 (n) | 164000 | &nbsp;&nbsp; 164201 |
| MSWF Commercial Mortgage Trust, 2023-2, "A5", 6.014%, 12/15/2056  | 69165 | &nbsp;&nbsp; 74873 |
| Nissan Master Owner Trust, 2024-A, "A", FLR, 4.904% (SOFR - 1mo. + 0.67%), 2/15/2028 (n) | 100000 | &nbsp;&nbsp; 100062 |
| OBX Trust, 2024-NQM10, "A2", 6.332%, 5/25/2064 (n) | 68279 | &nbsp;&nbsp; 69013 |
| OBX Trust, 2024-NQM15, "A1", 5.316%, 10/25/2064 (n) | 79950 | &nbsp;&nbsp; 80269 |
| OneMain Financial Issuance Trust, 2022-3A, "A", 5.94%, 5/15/2034 (n) | 31843 | &nbsp;&nbsp; 32018 |
| Palmer Square Loan Funding 2024-3A Ltd., "A-2", FLR, 5.884% (SOFR - 3mo. + 1.65%), 8/08/2032 (n) | 250000 | &nbsp;&nbsp; 250166 |
| PFP III 2024-11 Ltd., "11A", FLR, 5.916% (SOFR - 1mo. + 1.83239%), 9/17/2039 (n) | 109997 | &nbsp;&nbsp; 110127 |
| PFP III 2025-12 Ltd., "AS", FLR, 5.766% (SOFR - 1mo. + 1.7418%), 12/18/2042 (n) | 115500 | &nbsp;&nbsp; 115282 |
| Provident Funding Mortgage Trust, 2025-2, "A4", 5.5%, 6/25/2055 (n) | 128427 | &nbsp;&nbsp; 129159 |
| Santander Drive Auto Receivables Trust, 2025-1, "A2", 4.76%, 8/16/2027  | 36023 | &nbsp;&nbsp; 36036 |
| SBNA Auto Lease Trust, 2024-C, "A2", 4.94%, 11/20/2026 (n) | 41 | &nbsp;&nbsp; 41 |

---

MCBFS-SEM

------

MFS Core Bond Fund

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued |
| Shackleton 2019-14A CLO Ltd., "CRR", FLR, 5.784% (SOFR - 3mo. + 1.9%), 7/20/2034 (n) | $250000 | &nbsp;&nbsp; $251020 |
| Stellantis Finance US, Inc., 4.63%, 7/20/2027 (n) | 59090 | &nbsp;&nbsp; 59244 |
| TPG Real Estate Finance, 2025-FL7, "A", FLR, 0% (SOFR - 1mo. + 1.45%), 6/18/2043 (n) | 183045 | &nbsp;&nbsp; 183045 |
| Venture CLO 43 Ltd., 2021-43A, "BR", FLR, 5.755% (SOFR - 3mo. + 1.85%), 4/15/2034 (n) | 150000 | &nbsp;&nbsp; 150002 |
| Verus Securitization Trust, 2024-8, "A1", 5.364%, 10/25/2069 (n) | 82388 | &nbsp;&nbsp; 82709 |
| Verus Securitization Trust, 2025-9, "A1", 4.935%, 10/27/2070 (n) | 100000 | &nbsp;&nbsp; 99887 |
| Virginia Power Fuel Securitization LLC, 5.088%, 5/01/2027  | 30089 | &nbsp;&nbsp; 30390 |
| Wells Fargo Commercial Mortgage Trust, 2017-RB1, "A5", 3.635%, 3/15/2050  | 175000 | &nbsp;&nbsp; 170478 |
|  |  | &nbsp;&nbsp; $6166324 |
| Automotive – 0.5% | Automotive – 0.5% | Automotive – 0.5% |
| Stellantis Finance US, Inc., 2.691%, 9/15/2031 (n) | $200000 | &nbsp;&nbsp; $173749 |
| Broadcasting – 0.2% | Broadcasting – 0.2% | Broadcasting – 0.2% |
| Walt Disney Co., 3.5%, 5/13/2040  | $68000 | &nbsp;&nbsp; $57175 |
| 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  | $198000 | &nbsp;&nbsp; $211812 |
| Intercontinental Exchange, Inc., 2.1%, 6/15/2030  | 103000 | &nbsp;&nbsp; 94362 |
| LPL Holdings, Inc., 4.625%, 11/15/2027 (n) | 43000 | &nbsp;&nbsp; 42862 |
| LPL Holdings, Inc., 6.75%, 11/17/2028  | 11000 | &nbsp;&nbsp; 11727 |
| LPL Holdings, Inc., 4.375%, 5/15/2031 (n) | 178000 | &nbsp;&nbsp; 172466 |
|  |  | &nbsp;&nbsp; $533229 |
| Building – 0.3% | Building – 0.3% | Building – 0.3% |
| Masco Corp., 2%, 2/15/2031  | $117000 | &nbsp;&nbsp; $102833 |
| Business Services – 1.3% | Business Services – 1.3% | Business Services – 1.3% |
| Equinix, Inc., 1.8%, 7/15/2027  | $83000 | &nbsp;&nbsp; $79763 |
| Equinix, Inc., 2.5%, 5/15/2031  | 69000 | &nbsp;&nbsp; 62328 |
| Fiserv, Inc., 2.65%, 6/01/2030  | 88000 | &nbsp;&nbsp; 80763 |
| Global Payments, Inc., 1.2%, 3/01/2026  | 87000 | &nbsp;&nbsp; 86065 |
| Global Payments, Inc., 2.9%, 11/15/2031  | 77000 | &nbsp;&nbsp; 68479 |
| Verisk Analytics, Inc., 5.75%, 4/01/2033  | 70000 | &nbsp;&nbsp; 73991 |
|  |  | &nbsp;&nbsp; $451389 |
| Cable TV – 0.7% | Cable TV – 0.7% | Cable TV – 0.7% |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 6.384%, 10/23/2035  | $69000 | &nbsp;&nbsp; $71474 |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 5.375%, 5/01/2047  | 98000 | &nbsp;&nbsp; 83148 |
| Time Warner Entertainment Co. LP, 8.375%, 7/15/2033  | 58000 | &nbsp;&nbsp; 67262 |
|  |  | &nbsp;&nbsp; $221884 |
| Computer Software – 0.6% | Computer Software – 0.6% | Computer Software – 0.6% |
| Oracle Corp., 4.9%, 2/06/2033  | $22000 | &nbsp;&nbsp; $21853 |
| Oracle Corp., 5.2%, 9/26/2035  | 88000 | &nbsp;&nbsp; 86663 |
| Roper Technologies, Inc., 2%, 6/30/2030  | 89000 | &nbsp;&nbsp; 80259 |
|  |  | &nbsp;&nbsp; $188775 |
| Consumer Products – 0.2% | Consumer Products – 0.2% | Consumer Products – 0.2% |
| Kenvue, Inc., 4.9%, 3/22/2033  | $60000 | &nbsp;&nbsp; $60631 |
| Electrical Equipment – 0.4% | Electrical Equipment – 0.4% | Electrical Equipment – 0.4% |
| Arrow Electronics, Inc., 2.95%, 2/15/2032  | $147000 | &nbsp;&nbsp; $131202 |

---

------

MFS Core Bond Fund

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Electronics – 0.2% | Electronics – 0.2% | Electronics – 0.2% |
| Broadcom, Inc., 4.3%, 11/15/2032  | $63000 | &nbsp;&nbsp; $62329 |
| Energy - Integrated – 0.6% | Energy - Integrated – 0.6% | Energy - Integrated – 0.6% |
| Eni S.p.A., 5.5%, 5/15/2034 (n) | $208000 | &nbsp;&nbsp; $214388 |
| 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  | $150000 | &nbsp;&nbsp; $147688 |
| Avolon Holdings Funding Ltd., 4.375%, 5/01/2026 (n) | 79000 | &nbsp;&nbsp; 78958 |
| Avolon Holdings Funding Ltd., 3.25%, 2/15/2027 (n) | 78000 | &nbsp;&nbsp; 76846 |
|  |  | &nbsp;&nbsp; $303492 |
| Food & Beverages – 1.7% | Food & Beverages – 1.7% | Food & Beverages – 1.7% |
| Anheuser-Busch InBev Worldwide, Inc., 4.375%, 4/15/2038  | $163000 | &nbsp;&nbsp; $155506 |
| Anheuser-Busch InBev Worldwide, Inc., 8%, 11/15/2039  | 123000 | &nbsp;&nbsp; 157793 |
| Diageo Capital PLC, 2.375%, 10/24/2029  | 200000 | &nbsp;&nbsp; 187459 |
| Mars, Inc., 5.2%, 3/01/2035 (n) | 81000 | &nbsp;&nbsp; 83138 |
|  |  | &nbsp;&nbsp; $583896 |
| Gaming & Lodging – 0.7% | Gaming & Lodging – 0.7% | Gaming & Lodging – 0.7% |
| GLP Capital LP/GLP Financing II, Inc., 5.3%, 1/15/2029  | $64000 | &nbsp;&nbsp; $65214 |
| Las Vegas Sands Corp., 3.9%, 8/08/2029  | 65000 | &nbsp;&nbsp; 63104 |
| Marriott International, Inc., 4.625%, 6/15/2030  | 108000 | &nbsp;&nbsp; 109181 |
|  |  | &nbsp;&nbsp; $237499 |
| Insurance – 0.8% | Insurance – 0.8% | Insurance – 0.8% |
| Corebridge Financial, Inc., 3.9%, 4/05/2032  | $82000 | &nbsp;&nbsp; $77999 |
| Corebridge Financial, Inc., 5.75%, 1/15/2034  | 42000 | &nbsp;&nbsp; 43971 |
| Metropolitan Life Global Funding I, 3.3%, 3/21/2029 (n) | 150000 | &nbsp;&nbsp; 146049 |
|  |  | &nbsp;&nbsp; $268019 |
| Insurance - Health – 0.4% | Insurance - Health – 0.4% | Insurance - Health – 0.4% |
| Humana, Inc., 5.875%, 3/01/2033  | $38000 | &nbsp;&nbsp; $40047 |
| UnitedHealth Group, Inc., 5%, 4/15/2034  | 78000 | &nbsp;&nbsp; 79363 |
|  |  | &nbsp;&nbsp; $119410 |
| Insurance - Property & Casualty – 1.0% | Insurance - Property & Casualty – 1.0% | Insurance - Property & Casualty – 1.0% |
| Aon Corp., 4.5%, 12/15/2028  | $61000 | &nbsp;&nbsp; $61674 |
| Brown & Brown, Inc., 4.2%, 3/17/2032  | 84000 | &nbsp;&nbsp; 81183 |
| Brown & Brown, Inc., 5.55%, 6/23/2035  | 19000 | &nbsp;&nbsp; 19556 |
| Fairfax Financial Holdings Ltd., 5.625%, 8/16/2032  | 85000 | &nbsp;&nbsp; 88738 |
| Fairfax Financial Holdings Ltd., 5.75%, 5/20/2035 (n) | 72000 | &nbsp;&nbsp; 75349 |
|  |  | &nbsp;&nbsp; $326500 |
| Machinery & Tools – 0.8% | Machinery & Tools – 0.8% | Machinery & Tools – 0.8% |
| Ashtead Capital, Inc., 5.5%, 8/11/2032 (n) | $200000 | &nbsp;&nbsp; $206219 |
| CNH Industrial Capital LLC, 1.875%, 1/15/2026  | 79000 | &nbsp;&nbsp; 78588 |
|  |  | &nbsp;&nbsp; $284807 |
| Major Banks – 6.8% | Major Banks – 6.8% | Major Banks – 6.8% |
| Bank of America Corp., 2.572% to 10/20/2031, FLR (SOFR - 1 day + 1.21%) to 10/20/2032  | $302000 | &nbsp;&nbsp; $271596 |
| Capital One Financial Corp., 3.273% to 3/01/2029, FLR (SOFR - 1 day + 1.79%) to 3/01/2030  | 160000 | &nbsp;&nbsp; 154455 |
| Deutsche Bank AG, 2.311% to 11/16/2026, FLR (SOFR - 1 day + 1.219%) to 11/16/2027  | 150000 | &nbsp;&nbsp; 146986 |

---

------

MFS Core Bond Fund

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Major Banks – continued | Major Banks – continued | Major Banks – continued |
| Deutsche Bank AG, 6.72% to 1/18/2028, FLR (SOFR - 1 day + 3.18%) to 1/18/2029  | $150000 | &nbsp;&nbsp; $157239 |
| Goldman Sachs Group, Inc., 2.6%, 2/07/2030  | 172000 | &nbsp;&nbsp; 161104 |
| Goldman Sachs Group, Inc., 2.383% to 7/21/2031, FLR (SOFR - 1 day + 1.248%) to 7/21/2032  | 98000 | &nbsp;&nbsp; 87330 |
| JPMorgan Chase & Co., 4.323% to 4/26/2027, FLR (SOFR - 1 day + 1.56%) to 4/26/2028  | 74000 | &nbsp;&nbsp; 74238 |
| JPMorgan Chase & Co., 2.956% to 5/13/2030, FLR (SOFR - 1 day + 2.515%) to 5/13/2031  | 72000 | &nbsp;&nbsp; 67696 |
| JPMorgan Chase & Co., 2.963% to 1/25/2032, FLR (SOFR - 1 day + 1.26%) to 1/25/2033  | 69000 | &nbsp;&nbsp; 63223 |
| JPMorgan Chase & Co., 3.109% to 4/22/2040, FLR (SOFR - 1 day + 2.46%) to 4/22/2041  | 102000 | &nbsp;&nbsp; 80644 |
| Mitsubishi UFJ Financial Group, Inc., 5.615%, 4/24/2036  | 200000 | &nbsp;&nbsp; 210417 |
| Morgan Stanley, 1.512% to 7/20/2026, FLR (SOFR - 1 day + 0.858%) to 7/20/2027  | 131000 | &nbsp;&nbsp; 128494 |
| Morgan Stanley, 2.699% to 1/22/2030, FLR (SOFR - 1 day + 1.143%) to 1/22/2031  | 97000 | &nbsp;&nbsp; 90800 |
| Morgan Stanley, 2.943% to 1/21/2032, FLR (SOFR - 1 day + 1.29%) to 1/21/2033  | 127000 | &nbsp;&nbsp; 115597 |
| PNC Financial Services Group, Inc., 5.676% to 1/22/2034, FLR (SOFR - 1 day + 1.902%) to 1/22/2035  | 147000 | &nbsp;&nbsp; 155137 |
| UBS Group AG, 2.095% to 2/11/2031, FLR (CMT - 1yr. + 1.0%) to 2/11/2032 (n) | 200000 | &nbsp;&nbsp; 176846 |
| Wells Fargo & Co., 3.35% to 3/02/2032, FLR (SOFR - 1 day + 1.5%) to 3/02/2033  | 162000 | &nbsp;&nbsp; 151036 |
|  |  | &nbsp;&nbsp; $2292838 |
| Medical & Health Technology & Services – 1.0% | Medical & Health Technology & Services – 1.0% | Medical & Health Technology & Services – 1.0% |
| Adventist Health System/West, 5.43%, 3/01/2032  | $75000 | &nbsp;&nbsp; $77316 |
| Alcon Finance Corp., 2.6%, 5/27/2030 (n) | 200000 | &nbsp;&nbsp; 185265 |
| CVS Health Corp., 5.3%, 6/01/2033  | 85000 | &nbsp;&nbsp; 87355 |
|  |  | &nbsp;&nbsp; $349936 |
| Metals & Mining – 0.9% | Metals & Mining – 0.9% | Metals & Mining – 0.9% |
| Anglo American Capital PLC, 5.625%, 4/01/2030 (n) | $200000 | &nbsp;&nbsp; $208922 |
| Glencore Funding LLC, 2.5%, 9/01/2030 (n) | 87000 | &nbsp;&nbsp; 79577 |
|  |  | &nbsp;&nbsp; $288499 |
| Midstream – 1.6% | Midstream – 1.6% | Midstream – 1.6% |
| DCP Midstream Operating LP, 3.25%, 2/15/2032  | $167000 | &nbsp;&nbsp; $152664 |
| Plains All American Pipeline LP, 3.8%, 9/15/2030  | 174000 | &nbsp;&nbsp; 168143 |
| Sabine Pass Liquefaction LLC, 4.5%, 5/15/2030  | 75000 | &nbsp;&nbsp; 75266 |
| Targa Resources Corp., 6.125%, 3/15/2033  | 138000 | &nbsp;&nbsp; 147080 |
|  |  | &nbsp;&nbsp; $543153 |
| Mortgage-Backed – 24.6% | Mortgage-Backed – 24.6% |  |
| Fannie Mae, 5.183%, 2/25/2045 (n) | $27493 | &nbsp;&nbsp; $27546 |
| Fannie Mae, 3.5%, 3/01/2046  | 25336 | &nbsp;&nbsp; 23925 |
| Fannie Mae, 3%, 8/01/2046  | 26088 | &nbsp;&nbsp; 23856 |
| Fannie Mae, UMBS, 5.5%, 10/01/2038 - 11/01/2053  | 81810 | &nbsp;&nbsp; 83053 |
| Fannie Mae, UMBS, 2%, 7/01/2042 - 2/01/2052  | 501080 | &nbsp;&nbsp; 422000 |
| Fannie Mae, UMBS, 3%, 5/01/2043 - 8/01/2052  | 471255 | &nbsp;&nbsp; 418981 |
| Fannie Mae, UMBS, 3.5%, 7/01/2043 - 6/01/2053  | 35131 | &nbsp;&nbsp; 33434 |
| Fannie Mae, UMBS, 4%, 9/01/2046 - 11/01/2052  | 140947 | &nbsp;&nbsp; 135088 |
| Fannie Mae, UMBS, 2.5%, 1/01/2050 - 5/01/2052  | 1149443 | &nbsp;&nbsp; 982212 |
| Fannie Mae, UMBS, 1.5%, 6/01/2051  | 78665 | &nbsp;&nbsp; 60939 |
| Fannie Mae, UMBS, 4.5%, 6/01/2052 - 9/01/2052  | 93469 | &nbsp;&nbsp; 91580 |
| Fannie Mae, UMBS, 6%, 11/01/2052 - 11/01/2054  | 161030 | &nbsp;&nbsp; 165388 |
| Fannie Mae, UMBS, 5%, 12/01/2052 - 3/01/2055  | 474782 | &nbsp;&nbsp; 473290 |
| Fannie Mae, UMBS, 6.5%, 9/01/2054  | 200001 | &nbsp;&nbsp; 207052 |
| Freddie Mac, 2.57%, 7/25/2026  | 68789 | &nbsp;&nbsp; 68084 |
| Freddie Mac, 3.117%, 6/25/2027  | 100000 | &nbsp;&nbsp; 98738 |
| Freddie Mac, UMBS, 3%, 10/01/2037 - 6/01/2052  | 390608 | &nbsp;&nbsp; 353214 |
| Freddie Mac, UMBS, 3.5%, 1/01/2041 - 5/01/2052  | 164591 | &nbsp;&nbsp; 154775 |

---

------

MFS Core Bond Fund

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Mortgage-Backed – continued | Mortgage-Backed – continued |  |
| Freddie Mac, UMBS, 1.5%, 3/01/2051  | $35197 | &nbsp;&nbsp; $27335 |
| Freddie Mac, UMBS, 2.5%, 1/01/2052 - 6/01/2052  | 80848 | &nbsp;&nbsp; 68708 |
| Freddie Mac, UMBS, 4%, 7/01/2052 - 6/01/2055  | 297383 | &nbsp;&nbsp; 283080 |
| Freddie Mac, UMBS, 4.5%, 10/01/2052 - 10/01/2055  | 295390 | &nbsp;&nbsp; 288475 |
| Freddie Mac, UMBS, 5.5%, 4/01/2053 - 6/01/2053  | 205591 | &nbsp;&nbsp; 209416 |
| Freddie Mac, UMBS, 6.5%, 8/01/2053  | 24537 | &nbsp;&nbsp; 25439 |
| Freddie Mac, UMBS, 5%, 11/01/2053  | 88642 | &nbsp;&nbsp; 88434 |
| Freddie Mac, UMBS, 6%, 3/01/2054 - 6/01/2054  | 122341 | &nbsp;&nbsp; 125255 |
| Ginnie Mae, 4.246%, 9/20/2041  | 22210 | &nbsp;&nbsp; 21741 |
| Ginnie Mae, 3%, 1/20/2051 - 11/20/2052  | 295167 | &nbsp;&nbsp; 265590 |
| Ginnie Mae, 2%, 2/20/2052 - 6/20/2052  | 312802 | &nbsp;&nbsp; 260268 |
| Ginnie Mae, 2.5%, 2/20/2052 - 4/20/2052  | 429446 | &nbsp;&nbsp; 372005 |
| Ginnie Mae, 4%, 7/20/2052 - 10/20/2052  | 119195 | &nbsp;&nbsp; 113690 |
| Ginnie Mae, 4.5%, 9/20/2052 - 5/20/2053  | 298647 | &nbsp;&nbsp; 293493 |
| Ginnie Mae, 5%, 1/20/2053 - 4/20/2053  | 218872 | &nbsp;&nbsp; 219235 |
| Ginnie Mae, 5.5%, 2/20/2053 - 4/20/2055  | 263406 | &nbsp;&nbsp; 266688 |
| Ginnie Mae, 3.5%, 5/20/2055 - 10/20/2055  | 224992 | &nbsp;&nbsp; 206016 |
| Ginnie Mae, TBA, 6%, 11/15/2055  | 300000 | &nbsp;&nbsp; 305311 |
| UMBS, TBA, 2.5%, 11/25/2055 - 12/25/2055  | 275000 | &nbsp;&nbsp; 233450 |
| UMBS, TBA, 4%, 11/25/2055  | 75000 | &nbsp;&nbsp; 71153 |
| UMBS, TBA, 5.5%, 11/25/2055  | 50000 | &nbsp;&nbsp; 50515 |
| UMBS, TBA, 2%, 12/25/2055  | 575000 | &nbsp;&nbsp; 466247 |
| UMBS, TBA, 3%, 12/25/2055  | 125000 | &nbsp;&nbsp; 110732 |
| UMBS, TBA, 3.5%, 12/25/2055  | 150000 | &nbsp;&nbsp; 138174 |
|  |  | &nbsp;&nbsp; $8333605 |
| Municipals – 0.5% | Municipals – 0.5% | Municipals – 0.5% |
| Massachusetts Educational Financing Authority, Education Loan Rev., Taxable, "A", 6.352%, 7/01/2049  | $95000 | &nbsp;&nbsp; $99303 |
| Rhode Island Student Loan Authority Education Loan Rev., Taxable, "1", 6.081%, 12/01/2042  | 85000 | &nbsp;&nbsp; 86808 |
|  |  | &nbsp;&nbsp; $186111 |
| Natural Gas - Distribution – 0.2% | Natural Gas - Distribution – 0.2% | Natural Gas - Distribution – 0.2% |
| NiSource, Inc., 5.65%, 2/01/2045  | $73000 | &nbsp;&nbsp; $72949 |
| Network & Telecom – 1.4% | Network & Telecom – 1.4% | Network & Telecom – 1.4% |
| NTT Finance Corp., 5.502%, 7/16/2035 (n) | $400000 | &nbsp;&nbsp; $416960 |
| Verizon Communications, Inc., 2.55%, 3/21/2031  | 57000 | &nbsp;&nbsp; 51765 |
|  |  | &nbsp;&nbsp; $468725 |
| Oils – 0.2% | Oils – 0.2% | Oils – 0.2% |
| Marathon Petroleum Corp., 4.75%, 9/15/2044  | $83000 | &nbsp;&nbsp; $72283 |
| 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) | $148000 | &nbsp;&nbsp; $145960 |
| Pollution Control – 0.5% | Pollution Control – 0.5% | Pollution Control – 0.5% |
| Waste Management, Inc., 4.875%, 2/15/2034  | $179000 | &nbsp;&nbsp; $182873 |
| Real Estate - Office – 0.3% | Real Estate - Office – 0.3% | Real Estate - Office – 0.3% |
| Boston Properties LP, REIT, 5.75%, 1/15/2035  | $105000 | &nbsp;&nbsp; $107370 |

---

------

MFS Core Bond Fund

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Retailers – 0.4% | Retailers – 0.4% | Retailers – 0.4% |
| Alimentation Couche-Tard, Inc., 2.95%, 1/25/2030 (n) | $62000 | &nbsp;&nbsp; $58662 |
| Alimentation Couche-Tard, Inc., 3.439%, 5/13/2041 (n) | 117000 | &nbsp;&nbsp; 91335 |
|  |  | &nbsp;&nbsp; $149997 |
| Specialty Stores – 0.3% | Specialty Stores – 0.3% | Specialty Stores – 0.3% |
| Genuine Parts Co., 2.75%, 2/01/2032  | $115000 | &nbsp;&nbsp; $101132 |
| Telecommunications - Wireless – 1.1% | Telecommunications - Wireless – 1.1% | Telecommunications - Wireless – 1.1% |
| Crown Castle, Inc., REIT, 3.65%, 9/01/2027  | $79000 | &nbsp;&nbsp; $78184 |
| Rogers Communications, Inc., 3.8%, 3/15/2032  | 146000 | &nbsp;&nbsp; 137594 |
| T-Mobile USA, Inc., 2.05%, 2/15/2028  | 69000 | &nbsp;&nbsp; 65913 |
| T-Mobile USA, Inc., 4.5%, 4/15/2050  | 83000 | &nbsp;&nbsp; 69393 |
| Vodafone Group PLC, 5.625%, 2/10/2053  | 22000 | &nbsp;&nbsp; 21404 |
|  |  | &nbsp;&nbsp; $372488 |
| Tobacco – 0.9% | Tobacco – 0.9% | Tobacco – 0.9% |
| B.A.T. International Finance PLC, 4.448%, 3/16/2028  | $158000 | &nbsp;&nbsp; $158875 |
| Philip Morris International, Inc., 5.125%, 11/17/2027  | 25000 | &nbsp;&nbsp; 25504 |
| Philip Morris International, Inc., 5.625%, 11/17/2029  | 11000 | &nbsp;&nbsp; 11542 |
| Philip Morris International, Inc., 5.125%, 2/15/2030  | 52000 | &nbsp;&nbsp; 53679 |
| Philip Morris International, Inc., 5.75%, 11/17/2032  | 48000 | &nbsp;&nbsp; 51100 |
|  |  | &nbsp;&nbsp; $300700 |
| Transportation - Services – 0.1% | Transportation - Services – 0.1% | Transportation - Services – 0.1% |
| ERAC USA Finance LLC, 7%, 10/15/2037 (n) | $36000 | &nbsp;&nbsp; $41875 |
| U.S. Treasury Obligations – 23.6% | U.S. Treasury Obligations – 23.6% | U.S. Treasury Obligations – 23.6% |
| U.S. Treasury Bonds, 3.5%, 9/30/2027  | $400000 | &nbsp;&nbsp; $399234 |
| U.S. Treasury Bonds, 2.375%, 2/15/2042  | 1413000 | &nbsp;&nbsp; 1056328 |
| U.S. Treasury Bonds, 4.375%, 8/15/2043  | 150000 | &nbsp;&nbsp; 145898 |
| U.S. Treasury Bonds, 4.75%, 11/15/2043  | 100000 | &nbsp;&nbsp; 101855 |
| U.S. Treasury Bonds, 4.5%, 2/15/2044  | 880000 | &nbsp;&nbsp; 867488 |
| U.S. Treasury Bonds, 2.25%, 2/15/2052 (f) | 900000 | &nbsp;&nbsp; 564680 |
| U.S. Treasury Bonds, 4%, 11/15/2052  | 383000 | &nbsp;&nbsp; 342291 |
| U.S. Treasury Bonds, 4.75%, 11/15/2053  | 80000 | &nbsp;&nbsp; 80913 |
| U.S. Treasury Bonds, 4.25%, 2/15/2054  | 520000 | &nbsp;&nbsp; 484636 |
| U.S. Treasury Bonds, 4.5%, 11/15/2054  | 250000 | &nbsp;&nbsp; 243135 |
| U.S. Treasury Notes, 2.5%, 3/31/2027  | 850000 | &nbsp;&nbsp; 836520 |
| U.S. Treasury Notes, 4.5%, 4/15/2027  | 1170000 | &nbsp;&nbsp; 1183802 |
| U.S. Treasury Notes, 4.25%, 6/30/2029  | 1445000 | &nbsp;&nbsp; 1474803 |
| U.S. Treasury Notes, 3.875%, 7/31/2030  | 200000 | &nbsp;&nbsp; 201492 |
|  |  | &nbsp;&nbsp; $7983075 |
| 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  | $43000 | &nbsp;&nbsp; $46086 |
| Duke Energy Carolinas LLC, 4.95%, 1/15/2033  | 118000 | &nbsp;&nbsp; 121599 |
| Duke Energy Progress LLC, 3.45%, 3/15/2029  | 118000 | &nbsp;&nbsp; 116038 |
| Pacific Gas & Electric Co., 2.1%, 8/01/2027  | 82000 | &nbsp;&nbsp; 78813 |
| Pacific Gas & Electric Co., 3%, 6/15/2028  | 108000 | &nbsp;&nbsp; 104128 |
|  |  | &nbsp;&nbsp; $466664 |

---

------

MFS Core Bond Fund

*Portfolio of Investments (unaudited) – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Utilities - Gas – 0.5% | Utilities - Gas – 0.5% | Utilities - Gas – 0.5% |
| East Ohio Gas Co., 2%, 6/15/2030 (n) | $176000 | &nbsp;&nbsp; $158975 |
| **Total Bonds (Identified Cost, $33,006,310)** |  | &nbsp;&nbsp; **$33106739** |
| Mutual Funds (h) – 6.3% | Mutual Funds (h) – 6.3% | Mutual Funds (h) – 6.3% |
| Money Market Funds – 6.3% | Money Market Funds – 6.3% |  |
| MFS Institutional Money Market Portfolio, 4.12% (v) (Identified Cost, $2,152,439) | 2152343 | &nbsp;&nbsp; $2152773 |
| Other Assets, Less Liabilities – (4.1)% |  | &nbsp;&nbsp; (1400032) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp; **$33859480** |

---

&nbsp;&nbsp;&nbsp;&nbsp;(f) All or a portion of the security has been segregated as collateral for open futures
 contracts.

&nbsp;&nbsp;&nbsp;&nbsp;(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 $2,152,773 and $33,106,739, respectively.

&nbsp;&nbsp;&nbsp;&nbsp;(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 $8,341,167, representing 24.6% of net assets.

&nbsp;&nbsp;&nbsp;&nbsp;(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 | Collateralized Loan Obligation |
| CMT | Constant Maturity Treasury |
| FLR | Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate <br> reported may not be the current rate. All reference rates are USD unless otherwise noted.<br>|
| REIT | Real Estate Investment Trust |
| SOFR | Secured Overnight Financing Rate |
| TBA | To Be Announced |
| UMBS | Uniform Mortgage-Backed Security |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Derivative Contracts at 10/31/25** | **Derivative Contracts at 10/31/25** | **Derivative Contracts at 10/31/25** | **Derivative Contracts at 10/31/25** | **Derivative Contracts at 10/31/25** | **Derivative Contracts at 10/31/25** | **Derivative Contracts at 10/31/25** |
| **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** |
| **Description** | &nbsp;&nbsp; **Long/** <br>**Short**<br>| **Currency** | **Contracts** | &nbsp;&nbsp; **Notional** <br>**Amount**<br>| &nbsp;&nbsp;&nbsp; **Expiration** <br>**Date**<br>| &nbsp;&nbsp; **Value/Unrealized** <br>**Appreciation** <br>&nbsp;&nbsp;&nbsp;&nbsp;**(Depreciation)**<br>|
| **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 Ultra Bond 30 yr | &nbsp;&nbsp;&nbsp; Long | &nbsp;&nbsp;&nbsp; USD | &nbsp;&nbsp;&nbsp; 6 | &nbsp;&nbsp;&nbsp; $727688 | December – 2025 | &nbsp;&nbsp;&nbsp; $30234 |
| **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 Note 2 yr | &nbsp;&nbsp;&nbsp; Long | &nbsp;&nbsp;&nbsp; USD | &nbsp;&nbsp;&nbsp; 12 | &nbsp;&nbsp;&nbsp; $2498906 | December – 2025 | &nbsp;&nbsp;&nbsp; $(2377)<br>|
| U.S. Treasury Note 5 yr | &nbsp;&nbsp;&nbsp; Long | &nbsp;&nbsp;&nbsp; USD | &nbsp;&nbsp;&nbsp; 15 | &nbsp;&nbsp;&nbsp; 1638164 | December – 2025 | &nbsp;&nbsp;&nbsp; (163)<br>|
|  |  |  |  |  |  | &nbsp;&nbsp;&nbsp; $(2540)<br>|

---

At October 31, 2025, the fund had liquid securities with an aggregate value of $70,898 to cover any collateral or margin obligations for certain derivative contracts.

**See Notes to Financial Statements**

------

MFS Core Bond Fund

**Financial Statements** \| **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 10/31/25 (unaudited)**<br> **Assets**<br>|  |
| Investments in unaffiliated issuers, at value (identified cost, $33,006,310) | &nbsp;&nbsp; $33106739 |
| Investments in affiliated issuers, at value (identified cost, $2,152,439) | &nbsp;&nbsp; 2152773 |
| Receivables for |  |
| TBA sale commitments | &nbsp;&nbsp; 1083449 |
| Fund shares sold | &nbsp;&nbsp; 1386 |
| Interest and dividends | &nbsp;&nbsp; 226962 |
| Receivable from investment adviser | &nbsp;&nbsp; 25121 |
| Other assets | &nbsp;&nbsp; 46021 |
| Total assets | &nbsp;&nbsp; $36642451 |
| **Liabilities** |  |
| Payable to custodian | &nbsp;&nbsp; $82732 |
| Payables for |  |
| Distributions | &nbsp;&nbsp; 245 |
| Net daily variation margin on open futures contracts | &nbsp;&nbsp; 2999 |
| Investments purchased | &nbsp;&nbsp; 183045 |
| TBA purchase commitments | &nbsp;&nbsp; 2458789 |
| Fund shares reacquired | &nbsp;&nbsp; 1376 |
| Payable to affiliates |  |
| Administrative services fee | &nbsp;&nbsp; 96 |
| Shareholder servicing costs | &nbsp;&nbsp; 919 |
| Distribution and service fees | &nbsp;&nbsp; 128 |
| Accrued expenses and other liabilities | &nbsp;&nbsp; 52642 |
| Total liabilities | &nbsp;&nbsp; $2782971 |
| Net assets | &nbsp;&nbsp; $33859480 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp; $34446558 |
| Total distributable earnings (loss) | &nbsp;&nbsp; (587078)<br>|
| Net assets | &nbsp;&nbsp; $33859480 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp; 3477771 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | **Net assets** | &nbsp;&nbsp; **Shares** <br>**outstanding**<br>| &nbsp;&nbsp; **Net asset value** <br>**per share (a)**<br>|
| Class A | &nbsp;&nbsp;&nbsp; $4115758 | &nbsp;&nbsp;&nbsp; 422991 | &nbsp;&nbsp;&nbsp; $9.73 |
| Class C | &nbsp;&nbsp;&nbsp; 1183288 | &nbsp;&nbsp;&nbsp; 121697 | &nbsp;&nbsp;&nbsp;&nbsp;9.72 |
| Class I | &nbsp;&nbsp;&nbsp; 391760 | &nbsp;&nbsp;&nbsp; 40213 | &nbsp;&nbsp;&nbsp;&nbsp;9.74 |
| Class R1 | &nbsp;&nbsp;&nbsp; 65983 | &nbsp;&nbsp;&nbsp; 6778 | &nbsp;&nbsp;&nbsp;&nbsp;9.73 |
| Class R2 | &nbsp;&nbsp;&nbsp; 55767 | &nbsp;&nbsp;&nbsp; 5727 | &nbsp;&nbsp;&nbsp;&nbsp;9.74 |
| Class R3 | &nbsp;&nbsp;&nbsp; 83726 | &nbsp;&nbsp;&nbsp; 8599 | &nbsp;&nbsp;&nbsp;&nbsp;9.74 |
| Class R4 | &nbsp;&nbsp;&nbsp; 56712 | &nbsp;&nbsp;&nbsp; 5824 | &nbsp;&nbsp;&nbsp;&nbsp;9.74 |
| Class R6 | &nbsp;&nbsp;&nbsp; 27906486 | &nbsp;&nbsp;&nbsp; 2865942 | &nbsp;&nbsp;&nbsp;&nbsp;9.74 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(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 $10.16 [100 / 95.75 x $9.73]. 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.

**See Notes to Financial Statements**

------

MFS Core Bond Fund

**Financial Statements** \| **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.

---

| | |
|:---|:---|
| **Six months ended 10/31/25 (unaudited)**<br> **Net investment income (loss)**<br>|  |
| Income |  |
| Interest | &nbsp;&nbsp; $747682 |
| Dividends from affiliated issuers | &nbsp;&nbsp; 37859 |
| Other | &nbsp;&nbsp; 305 |
| Total investment income | &nbsp;&nbsp; $785846 |
| Expenses |  |
| Management fee | &nbsp;&nbsp; $53512 |
| Distribution and service fees | &nbsp;&nbsp; 11168 |
| Shareholder servicing costs | &nbsp;&nbsp; 4346 |
| Administrative services fee | &nbsp;&nbsp; 8823 |
| Independent Trustees' compensation | &nbsp;&nbsp; 1523 |
| Custodian fee | &nbsp;&nbsp; 8927 |
| Shareholder communications | &nbsp;&nbsp; 2877 |
| Audit and tax fees | &nbsp;&nbsp; 38903 |
| Legal fees | &nbsp;&nbsp; 124 |
| Registration fees | &nbsp;&nbsp; 57631 |
| Miscellaneous | &nbsp;&nbsp; 20883 |
| Total expenses | &nbsp;&nbsp; $208717 |
| Fees paid indirectly | &nbsp;&nbsp; (85)<br>|
| Reduction of expenses by investment adviser | &nbsp;&nbsp; (142251)<br>|
| Net expenses | &nbsp;&nbsp; $66381 |
| Net investment income (loss) | &nbsp;&nbsp; $719465 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| Unaffiliated issuers | &nbsp;&nbsp; $86349 |
| Affiliated issuers | &nbsp;&nbsp; 83 |
| Futures contracts | &nbsp;&nbsp; (6640)<br>|
| Net realized gain (loss) | &nbsp;&nbsp; $79792 |
| Change in unrealized appreciation or depreciation |  |
| Unaffiliated issuers | &nbsp;&nbsp; $382423 |
| Affiliated issuers | &nbsp;&nbsp; 334 |
| Futures contracts | &nbsp;&nbsp; (703)<br>|
| Net unrealized gain (loss) | &nbsp;&nbsp; $382054 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp; $461846 |
| Change in net assets from operations | &nbsp;&nbsp; $1181311 |

---

**See Notes to Financial Statements**

------

MFS Core Bond Fund

**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.

---

| | | |
|:---|:---|:---|
|  | **Six months ended** | **Year ended** |
|  | <br>**10/31/25** <br>**(unaudited)**<br>| <br>**4/30/25** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | $719465 | &nbsp;&nbsp; $1374610 |
| Net realized gain (loss) | 79792 | &nbsp;&nbsp; (60946)<br>|
| Net unrealized gain (loss) | 382054 | &nbsp;&nbsp; 1020674 |
| Change in net assets from operations | $1181311 | &nbsp;&nbsp; $2334338 |
| Total distributions to shareholders | $(800025)<br>| &nbsp;&nbsp; $(1440208)<br>|
| Change in net assets from fund share transactions | $1388895 | &nbsp;&nbsp; $1996029 |
| Total change in net assets | $1770181 | &nbsp;&nbsp; $2890159 |
| **Net assets** |  |  |
| At beginning of period | 32089299 | &nbsp;&nbsp; 29199140 |
| At end of period | $33859480 | &nbsp;&nbsp; $32089299 |

---

**See Notes to Financial Statements**

------

MFS Core Bond Fund

**Financial Statements** \| **Financial Highlights**

The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal 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**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.62 | &nbsp;&nbsp; $9.33 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.20 | &nbsp;&nbsp; $0.41 | &nbsp;&nbsp; $0.41 | &nbsp;&nbsp; $0.32 |
| Net realized and unrealized gain (loss) | 0.14 | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp; (0.51)<br>| &nbsp;&nbsp; (0.15)<br>|
| Total from investment operations | $0.34 | &nbsp;&nbsp; $0.72 | &nbsp;&nbsp; $(0.10)<br>| &nbsp;&nbsp; $0.17 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.23)<br>| &nbsp;&nbsp; $(0.43)<br>| &nbsp;&nbsp; $(0.43)<br>| &nbsp;&nbsp; $(0.31)<br>|
| Net asset value, end of period (x) | $9.73 | &nbsp;&nbsp; $9.62 | &nbsp;&nbsp; $9.33 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.53<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;7.80 | &nbsp;&nbsp; (1.00)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.75<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 1.48<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;1.27 | &nbsp;&nbsp;&nbsp;&nbsp; 1.59<br> (a)<br>|
| Expenses after expense reductions (f) | 0.61<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp; 0.60<br> (a)<br>|
| Net investment income (loss) | 4.16<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;4.24 | &nbsp;&nbsp;&nbsp;&nbsp;4.31 | &nbsp;&nbsp;&nbsp;&nbsp; 3.85<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $4116 | &nbsp;&nbsp; $3417 | &nbsp;&nbsp; $2643 | &nbsp;&nbsp; $947 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

**See Notes to Financial Statements**

------

MFS Core Bond Fund

*Financial Highlights - continued*

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class C**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.61 | &nbsp;&nbsp; $9.32 | &nbsp;&nbsp; $9.85 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.17 | &nbsp;&nbsp; $0.34 | &nbsp;&nbsp; $0.34 | &nbsp;&nbsp; $0.26 |
| Net realized and unrealized gain (loss) | 0.13 | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp; (0.51)<br>| &nbsp;&nbsp; (0.16)<br>|
| Total from investment operations | $0.30 | &nbsp;&nbsp; $0.65 | &nbsp;&nbsp; $(0.17)<br>| &nbsp;&nbsp; $0.10 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.19)<br>| &nbsp;&nbsp; $(0.36)<br>| &nbsp;&nbsp; $(0.36)<br>| &nbsp;&nbsp; $(0.25)<br>|
| Net asset value, end of period (x) | $9.72 | &nbsp;&nbsp; $9.61 | &nbsp;&nbsp; $9.32 | &nbsp;&nbsp; $9.85 |
| Total return (%) (r)(s)(t)(x) | 3.15<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;7.01 | &nbsp;&nbsp; (1.71)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.06<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 2.23<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;2.26 | &nbsp;&nbsp;&nbsp;&nbsp;2.02 | &nbsp;&nbsp;&nbsp;&nbsp; 3.12<br> (a)<br>|
| Expenses after expense reductions (f) | 1.36<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;1.37 | &nbsp;&nbsp;&nbsp;&nbsp; 1.35<br> (a)<br>|
| Net investment income (loss) | 3.41<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;3.49 | &nbsp;&nbsp;&nbsp;&nbsp;3.56 | &nbsp;&nbsp;&nbsp;&nbsp; 3.12<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $1183 | &nbsp;&nbsp; $1185 | &nbsp;&nbsp; $1051 | &nbsp;&nbsp; $391 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class I**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.63 | &nbsp;&nbsp; $9.33 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.21 | &nbsp;&nbsp; $0.43 | &nbsp;&nbsp; $0.44 | &nbsp;&nbsp; $0.35 |
| Net realized and unrealized gain (loss) | 0.14 | &nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp; (0.51)<br>| &nbsp;&nbsp; (0.16)<br>|
| Total from investment operations | $0.35 | &nbsp;&nbsp; $0.75 | &nbsp;&nbsp; $(0.07)<br>| &nbsp;&nbsp; $0.19 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.24)<br>| &nbsp;&nbsp; $(0.45)<br>| &nbsp;&nbsp; $(0.46)<br>| &nbsp;&nbsp; $(0.33)<br>|
| Net asset value, end of period (x) | $9.74 | &nbsp;&nbsp; $9.63 | &nbsp;&nbsp; $9.33 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.66<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.17 | &nbsp;&nbsp; (0.76)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.95<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 1.23<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp; 1.36<br> (a)<br>|
| Expenses after expense reductions (f) | 0.36<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp; 0.35<br> (a)<br>|
| Net investment income (loss) | 4.41<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;4.50 | &nbsp;&nbsp;&nbsp;&nbsp;4.56 | &nbsp;&nbsp;&nbsp;&nbsp; 4.19<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $392 | &nbsp;&nbsp; $328 | &nbsp;&nbsp; $466 | &nbsp;&nbsp; $445 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

**See Notes to Financial Statements**

------

MFS Core Bond Fund

*Financial Highlights - continued*

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class R1**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.62 | &nbsp;&nbsp; $9.33 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.17 | &nbsp;&nbsp; $0.34 | &nbsp;&nbsp; $0.34 | &nbsp;&nbsp; $0.25 |
| Net realized and unrealized gain (loss) | 0.13 | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp; (0.51)<br>| &nbsp;&nbsp; (0.15)<br>|
| Total from investment operations | $0.30 | &nbsp;&nbsp; $0.65 | &nbsp;&nbsp; $(0.17)<br>| &nbsp;&nbsp; $0.10 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.19)<br>| &nbsp;&nbsp; $(0.36)<br>| &nbsp;&nbsp; $(0.36)<br>| &nbsp;&nbsp; $(0.24)<br>|
| Net asset value, end of period (x) | $9.73 | &nbsp;&nbsp; $9.62 | &nbsp;&nbsp; $9.33 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.14<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;6.99 | &nbsp;&nbsp; (1.74)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.09<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 2.22<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;2.25 | &nbsp;&nbsp;&nbsp;&nbsp;2.03 | &nbsp;&nbsp;&nbsp;&nbsp; 2.20<br> (a)<br>|
| Expenses after expense reductions (f) | 1.36<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp; 1.35<br> (a)<br>|
| Net investment income (loss) | 3.41<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;3.49 | &nbsp;&nbsp;&nbsp;&nbsp;3.56 | &nbsp;&nbsp;&nbsp;&nbsp; 2.97<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $66 | &nbsp;&nbsp; $64 | &nbsp;&nbsp; $60 | &nbsp;&nbsp; $51 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class R2**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.62 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.19 | &nbsp;&nbsp; $0.38 | &nbsp;&nbsp; $0.39 | &nbsp;&nbsp; $0.29 |
| Net realized and unrealized gain (loss) | 0.14 | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp; (0.50)<br>| &nbsp;&nbsp; (0.14)<br>|
| Total from investment operations | $0.33 | &nbsp;&nbsp; $0.69 | &nbsp;&nbsp; $(0.11)<br>| &nbsp;&nbsp; $0.15 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.21)<br>| &nbsp;&nbsp; $(0.41)<br>| &nbsp;&nbsp; $(0.41)<br>| &nbsp;&nbsp; $(0.29)<br>|
| Net asset value, end of period (x) | $9.74 | &nbsp;&nbsp; $9.62 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.51<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;7.41 | &nbsp;&nbsp; (1.15)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.52<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 1.73<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.76 | &nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp; 1.70<br> (a)<br>|
| Expenses after expense reductions (f) | 0.86<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;0.86 | &nbsp;&nbsp;&nbsp;&nbsp;0.86 | &nbsp;&nbsp;&nbsp;&nbsp; 0.85<br> (a)<br>|
| Net investment income (loss) | 3.90<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;3.99 | &nbsp;&nbsp;&nbsp;&nbsp;4.06 | &nbsp;&nbsp;&nbsp;&nbsp; 3.47<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $56 | &nbsp;&nbsp; $54 | &nbsp;&nbsp; $50 | &nbsp;&nbsp; $51 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

**See Notes to Financial Statements**

------

MFS Core Bond Fund

*Financial Highlights - continued*

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class R3**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.62 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.20 | &nbsp;&nbsp; $0.41 | &nbsp;&nbsp; $0.41 | &nbsp;&nbsp; $0.31 |
| Net realized and unrealized gain (loss) | 0.15 | &nbsp;&nbsp;&nbsp;&nbsp;0.30 | &nbsp;&nbsp; (0.50)<br>| &nbsp;&nbsp; (0.14)<br>|
| Total from investment operations | $0.35 | &nbsp;&nbsp; $0.71 | &nbsp;&nbsp; $(0.09)<br>| &nbsp;&nbsp; $0.17 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.23)<br>| &nbsp;&nbsp; $(0.43)<br>| &nbsp;&nbsp; $(0.43)<br>| &nbsp;&nbsp; $(0.31)<br>|
| Net asset value, end of period (x) | $9.74 | &nbsp;&nbsp; $9.62 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.64<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;7.68 | &nbsp;&nbsp; (0.90)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.74<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 1.47<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;1.28 | &nbsp;&nbsp;&nbsp;&nbsp; 1.45<br> (a)<br>|
| Expenses after expense reductions (f) | 0.61<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;0.62 | &nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp; 0.60<br> (a)<br>|
| Net investment income (loss) | 4.16<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;4.23 | &nbsp;&nbsp;&nbsp;&nbsp;4.31 | &nbsp;&nbsp;&nbsp;&nbsp; 3.71<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $84 | &nbsp;&nbsp; $78 | &nbsp;&nbsp; $50 | &nbsp;&nbsp; $51 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class R4**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.63 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.21 | &nbsp;&nbsp; $0.43 | &nbsp;&nbsp; $0.44 | &nbsp;&nbsp; $0.33 |
| Net realized and unrealized gain (loss) | 0.14 | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp; (0.50)<br>| &nbsp;&nbsp; (0.14)<br>|
| Total from investment operations | $0.35 | &nbsp;&nbsp; $0.74 | &nbsp;&nbsp; $(0.06)<br>| &nbsp;&nbsp; $0.19 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.24)<br>| &nbsp;&nbsp; $(0.45)<br>| &nbsp;&nbsp; $(0.46)<br>| &nbsp;&nbsp; $(0.33)<br>|
| Net asset value, end of period (x) | $9.74 | &nbsp;&nbsp; $9.63 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.66<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.06 | &nbsp;&nbsp; (0.65)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.95<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 1.23<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp; 1.20<br> (a)<br>|
| Expenses after expense reductions (f) | 0.36<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp; 0.35<br> (a)<br>|
| Net investment income (loss) | 4.40<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;4.49 | &nbsp;&nbsp;&nbsp;&nbsp;4.56 | &nbsp;&nbsp;&nbsp;&nbsp; 3.96<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $57 | &nbsp;&nbsp; $55 | &nbsp;&nbsp; $51 | &nbsp;&nbsp; $51 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

**See Notes to Financial Statements**

------

MFS Core Bond Fund

*Financial Highlights - continued*

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Class R6**  | **Six months** <br>**ended**<br>| **Year ended** | **Year ended** | **Year ended** |
|  | **10/31/25** <br>**(unaudited)**<br>| **4/30/25** | **4/30/24** | **4/30/23(c)** |
| Net asset value, beginning of period | $9.63 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 | &nbsp;&nbsp; $10.00 |
| **Income (loss) from investment operations** |  |  |  |  |
| Net investment income (loss) (d) | $0.22 | &nbsp;&nbsp; $0.44 | &nbsp;&nbsp; $0.44 | &nbsp;&nbsp; $0.34 |
| Net realized and unrealized gain (loss) | 0.13 | &nbsp;&nbsp;&nbsp;&nbsp;0.31 | &nbsp;&nbsp; (0.50)<br>| &nbsp;&nbsp; (0.15)<br>|
| Total from investment operations | $0.35 | &nbsp;&nbsp; $0.75 | &nbsp;&nbsp; $(0.06)<br>| &nbsp;&nbsp; $0.19 |
| **Less distributions declared to shareholders** |  |  |  |  |
| From net investment income | $(0.24)<br>| &nbsp;&nbsp; $(0.46)<br>| &nbsp;&nbsp; $(0.46)<br>| &nbsp;&nbsp; $(0.33)<br>|
| Net asset value, end of period (x) | $9.74 | &nbsp;&nbsp; $9.63 | &nbsp;&nbsp; $9.34 | &nbsp;&nbsp; $9.86 |
| Total return (%) (r)(s)(t)(x) | 3.68<br> (n)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.10 | &nbsp;&nbsp; (0.62)<br>| &nbsp;&nbsp;&nbsp;&nbsp; 1.97<br> (n)<br>|
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |
| Expenses before expense reductions (f) | 1.19<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp; 1.18<br> (a)<br>|
| Expenses after expense reductions (f) | 0.33<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp; 0.33<br> (a)<br>|
| Net investment income (loss) | 4.44<br> (a)<br>| &nbsp;&nbsp;&nbsp;&nbsp;4.52 | &nbsp;&nbsp;&nbsp;&nbsp;4.59 | &nbsp;&nbsp;&nbsp;&nbsp; 3.99<br> (a)<br>|
| Portfolio turnover rate | 54<br> (n)<br>| &nbsp;&nbsp; 139 | &nbsp;&nbsp; 100 | &nbsp;&nbsp; 129<br> (n)<br>|
| Net assets at end of period (000 omitted) | $27906 | &nbsp;&nbsp; $26910 | &nbsp;&nbsp; $24828 | &nbsp;&nbsp; $24992 |
| **Supplemental Ratios (%):** |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | 19<br> (n)<br>| &nbsp;&nbsp; 40 | &nbsp;&nbsp; 53 | &nbsp;&nbsp; N/A |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) Annualized.

&nbsp;&nbsp;&nbsp;&nbsp;(c) For the period from the commencement of the fund's investment operations, June 22, 2022, through the stated period end.

&nbsp;&nbsp;&nbsp;&nbsp;(d) Per share data is based on average shares outstanding.

&nbsp;&nbsp;&nbsp;&nbsp;(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.

&nbsp;&nbsp;&nbsp;&nbsp;(f) Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note
 2 in the Notes to Financial Statements for additional information.

&nbsp;&nbsp;&nbsp;&nbsp;(n) Not annualized.

&nbsp;&nbsp;&nbsp;&nbsp;(r) Certain expenses have been reduced without which performance would have been lower.

&nbsp;&nbsp;&nbsp;&nbsp;(s) From time to time the fund may receive proceeds from litigation settlements, without
 which performance would be lower.

&nbsp;&nbsp;&nbsp;&nbsp;(t) Total returns do not include any applicable sales charges.

&nbsp;&nbsp;&nbsp;&nbsp;(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**

------

MFS Core Bond Fund

**Notes to Financial Statements (unaudited)**

**(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. The fund invests in foreign securities. 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.

An operating segment is defined in FASB Accounting Standards Codification Topic 280-Segment Reporting as 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

------

MFS Core Bond Fund

*Notes to Financial Statements (unaudited) - continued* 

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 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 October 31, 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 <br> Agencies & Equivalents<br>| $— | $7983075 | $— | $7983075 |
| Municipal Bonds |  | 186111 |  | 186111 |
| U.S. Corporate Bonds |  | 7037903 |  | 7037903 |
| Residential Mortgage-Backed Securities |  | 9144320 |  | 9144320 |
| Commercial Mortgage-Backed Securities |  | 1026762 |  | 1026762 |
| Asset-Backed Securities (including CDOs) |  | 4328847 |  | 4328847 |
| Foreign Bonds |  | 3399721 |  | 3399721 |
| Investment Companies | 2152773 |  |  | 2152773 |
| Total | $2152773 | $33106739 | $— | $35259512 |

---

---

| | | | |
|:---|:---|:---|:---|
| **Other Financial Instruments** |  |  |  |
| Futures Contracts – Assets | $30234 | $— | $30234 |
| Futures Contracts – Liabilities | (2540)<br>|  | (2540)<br>|

---

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 October 31, 2025 as reported in the Statement of Assets and Liabilities:

------

MFS Core Bond Fund

*Notes to Financial Statements (unaudited) - continued* 

---

| | | | |
|:---|:---|:---|:---|
|  |  | **Fair Value (a)** | **Fair Value (a)** |
| **Risk** | **Derivative Contracts** | **Asset Derivatives** | **Liability Derivatives** |
| Interest Rate | Futures Contracts | $30234 | $(2540) |

---

(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 six months ended October 31, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures** <br>**Contracts**<br>|
| Interest Rate | $(6640)<br>|

---

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 six months ended October 31, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures** <br>**Contracts**<br>|
| Interest Rate | $(703)<br>|

---

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 exchange-traded and cleared derivatives (e.g., futures contracts, cleared swaps, and exchange-traded options), margin requirements are set by the exchange or clearing broker and the clearing house and collateral, in the form of cash or securities, is posted by the fund directly with the exchange or 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 exchange-traded or 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 (unaudited) - 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 To Be Announced ("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 six months ended October 31, 2025, is shown as a reduction of total expenses in the Statement of Operations.

------

MFS Core Bond Fund

*Notes to Financial Statements (unaudited) - 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 generally 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 fiscal year is as follows:

---

| | |
|:---|:---|
|  | &nbsp;&nbsp; **Year ended** <br>**4/30/25**<br>|
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp; $1440208 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | |
|:---|:---|
| **As of 10/31/25** |  |
| Cost of investments | &nbsp;&nbsp; $35158749 |
| Gross appreciation | &nbsp;&nbsp; 491537 |
| Gross depreciation | &nbsp;&nbsp; (390774)<br>|
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp; $100763 |
| **As of 4/30/25** |  |
| Undistributed ordinary income | &nbsp;&nbsp; 168457 |
| Capital loss carryforwards | &nbsp;&nbsp; (737910)<br>|
| Other temporary differences | &nbsp;&nbsp; (119990)<br>|
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp; (278921)<br>|

---

The aggregate cost above includes prior fiscal year end tax adjustments, if applicable.

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)<br>|
| Long-Term | (472536)<br>|
| Total | $(737910)<br>|

---

**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 (unaudited) - continued* 

---

| | | |
|:---|:---|:---|
|  | **Six months** <br>**ended** <br>**10/31/25**<br>| **Year** <br>**ended** <br>**4/30/25**<br>|
| Class A | $86624 | &nbsp;&nbsp; $134260 |
| Class C | 23425 | &nbsp;&nbsp; 41571 |
| Class I | 8502 | &nbsp;&nbsp; 13027 |
| Class R1 | 1267 | &nbsp;&nbsp; 2325 |
| Class R2 | 1207 | &nbsp;&nbsp; 2218 |
| Class R3 | 1887 | &nbsp;&nbsp; 3029 |
| Class R4 | 1365 | &nbsp;&nbsp; 2511 |
| Class R6 | 675748 | &nbsp;&nbsp; 1241267 |
| Total | $800025 | &nbsp;&nbsp; $1440208 |

---

**(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 | 0.31% |
| In excess of $2.5 billion | 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 six months ended October 31, 2025, this management fee reduction amounted to $2,298, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the six months ended October 31, 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** | **C** | **I** | **R1** | **R2** | **R3** | **R4** | **R6** |
| 0.64% | 1.39% | 0.39% | 1.39% | 0.89% | 0.64% | 0.39% | 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, 2026. For the six months ended October 31, 2025, this reduction amounted to $139,953, 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 $156 for the six months ended October 31, 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 (unaudited) - continued* 

**Distribution Plan Fee Table:** 

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution** <br>**Fee Rate (d)**<br>| **Service** <br>**Fee Rate (d)**<br>| **Total** <br>**Distribution** <br>**Plan (d)**<br>| **Annual** <br>**Effective** <br>**Rate (e)**<br>| **Distribution** <br>**and Service** <br>**Fee**<br>|
| Class A |  | 0.25% | 0.25% | 0.25% | $4573 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | 6032 |
| Class R1 | 0.75% | 0.25% | 1.00% | 1.00% | 325 |
| Class R2 | 0.25% | 0.25% | 0.50% | 0.50% | 137 |
| Class R3 |  | 0.25% | 0.25% | 0.25% | 101 |
| Total Distribution and Service Fees  |  |  |  |  | $11168 |

---

(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 six months ended October 31, 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 six months ended October 31, 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. There were no contingent deferred sales charges imposed during the six months ended October 31, 2025.

**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 six months ended October 31, 2025, the fee was $2,592, which equated to 0.0157% 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 six months ended October 31, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $1,754.

**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 six months ended October 31, 2025 was equivalent to an annual effective rate of 0.0536% 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.

On August 19, 2024, MFS redeemed 21,820 shares of Class A for an aggregate amount of $214,710.

At October 31, 2025, MFS held approximately 67% and 100% of the outstanding shares of Class R3 and Class R6, respectively, and 100% of the outstanding shares of Class R1, Class R2, and Class R4.

**(4) Portfolio Securities**

For the six months ended October 31, 2025, purchases and sales of investments, other than short-term obligations, were as follows:

---

| | | |
|:---|:---|:---|
|  | **Purchases** | **Sales** |
| U.S. Government securities | $15440817 | &nbsp;&nbsp; $16143145 |
| Non-U.S. Government securities | 2697949 | &nbsp;&nbsp; 1267535 |

---

------

MFS Core Bond Fund

*Notes to Financial Statements (unaudited) - continued* 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

**(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:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Six months ended** <br>**10/31/25** | **Six months ended** <br>**10/31/25** | **Year ended** <br>**4/30/25** | **Year ended** <br>**4/30/25** |
|  | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |
| Class A | 76734 | &nbsp;&nbsp; $745355 | &nbsp;&nbsp; 179547 | &nbsp;&nbsp; $1734477 |
| Class C | 5077 | &nbsp;&nbsp; 48545 | &nbsp;&nbsp; 23433 | &nbsp;&nbsp; 225289 |
| Class I | 13141 | &nbsp;&nbsp; 127321 | &nbsp;&nbsp; 26215 | &nbsp;&nbsp; 254510 |
| Class R3 | 292 | &nbsp;&nbsp; 2825 | &nbsp;&nbsp; 2406 | &nbsp;&nbsp; 23891 |
| Class R6 | 159 | &nbsp;&nbsp; 1515 | &nbsp;&nbsp; 8832 | &nbsp;&nbsp; 85375 |
|  | 95403 | &nbsp;&nbsp; $925561 | &nbsp;&nbsp; 240433 | &nbsp;&nbsp; $2323542 |
| Shares issued to shareholders <br>in reinvestment of distributions<br>|  |  |  |  |
| Class A | 8915 | &nbsp;&nbsp; $85998 | &nbsp;&nbsp; 13852 | &nbsp;&nbsp; $133375 |
| Class C | 2347 | &nbsp;&nbsp; 22605 | &nbsp;&nbsp; 4222 | &nbsp;&nbsp; 40627 |
| Class I | 880 | &nbsp;&nbsp; 8502 | &nbsp;&nbsp; 1357 | &nbsp;&nbsp; 13027 |
| Class R1 | 131 | &nbsp;&nbsp; 1267 | &nbsp;&nbsp; 241 | &nbsp;&nbsp; 2325 |
| Class R2 | 125 | &nbsp;&nbsp; 1207 | &nbsp;&nbsp; 230 | &nbsp;&nbsp; 2218 |
| Class R3 | 196 | &nbsp;&nbsp; 1887 | &nbsp;&nbsp; 314 | &nbsp;&nbsp; 3029 |
| Class R4 | 141 | &nbsp;&nbsp; 1365 | &nbsp;&nbsp; 261 | &nbsp;&nbsp; 2511 |
| Class R6 | 70015 | &nbsp;&nbsp; 675748 | &nbsp;&nbsp; 128777 | &nbsp;&nbsp; 1241267 |
|  | 82750 | &nbsp;&nbsp; $798579 | &nbsp;&nbsp; 149254 | &nbsp;&nbsp; $1438379 |
| Shares reacquired |  |  |  |  |
| Class A | (17868)<br>| &nbsp;&nbsp; $(173338)<br>| &nbsp;&nbsp; (121393)<br>| &nbsp;&nbsp; $(1170436)<br>|
| Class C | (8982)<br>| &nbsp;&nbsp; (86741)<br>| &nbsp;&nbsp; (17158)<br>| &nbsp;&nbsp; (165549)<br>|
| Class I | (7819)<br>| &nbsp;&nbsp; (74915)<br>| &nbsp;&nbsp; (43462)<br>| &nbsp;&nbsp; (418702)<br>|
| Class R3 | (3)<br>| &nbsp;&nbsp; (26)<br>| &nbsp;&nbsp; (3)<br>| &nbsp;&nbsp; (26)<br>|
| Class R6 | (23)<br>| &nbsp;&nbsp; (225)<br>| &nbsp;&nbsp; (1169)<br>| &nbsp;&nbsp; (11179)<br>|
|  | (34695)<br>| &nbsp;&nbsp; $(335245)<br>| &nbsp;&nbsp; (183185)<br>| &nbsp;&nbsp; $(1765892)<br>|
| Net change |  |  |  |  |
| Class A | 67781 | &nbsp;&nbsp; $658015 | &nbsp;&nbsp; 72006 | &nbsp;&nbsp; $697416 |
| Class C | (1558)<br>| &nbsp;&nbsp; (15591)<br>| &nbsp;&nbsp; 10497 | &nbsp;&nbsp; 100367 |
| Class I | 6202 | &nbsp;&nbsp; 60908 | &nbsp;&nbsp; (15890)<br>| &nbsp;&nbsp; (151165)<br>|
| Class R1 | 131 | &nbsp;&nbsp; 1267 | &nbsp;&nbsp; 241 | &nbsp;&nbsp; 2325 |
| Class R2 | 125 | &nbsp;&nbsp; 1207 | &nbsp;&nbsp; 230 | &nbsp;&nbsp; 2218 |
| Class R3 | 485 | &nbsp;&nbsp; 4686 | &nbsp;&nbsp; 2717 | &nbsp;&nbsp; 26894 |
| Class R4 | 141 | &nbsp;&nbsp; 1365 | &nbsp;&nbsp; 261 | &nbsp;&nbsp; 2511 |
| Class R6 | 70151 | &nbsp;&nbsp; 677038 | &nbsp;&nbsp; 136440 | &nbsp;&nbsp; 1315463 |
|  | 143458 | &nbsp;&nbsp; $1388895 | &nbsp;&nbsp; 206502 | &nbsp;&nbsp; $1996029 |

---

**(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

------

MFS Core Bond Fund

*Notes to Financial Statements (unaudited) - continued* 

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 six months ended October 31, 2025, the fund's commitment fee and interest expense were $75 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 six months ended October 31, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp; **Beginning** <br>**Value**<br>| **Purchases** | &nbsp;&nbsp; **Sales** <br>**Proceeds**<br>| &nbsp;&nbsp; **Realized** <br>**Gain** <br>**(Loss)**<br>| &nbsp;&nbsp; **Change in** <br>**Unrealized** <br>**Appreciation** <br> **or** <br>**Depreciation**<br>| &nbsp;&nbsp; **Ending** <br>**Value**<br>|
| MFS Institutional Money Market <br> Portfolio<br>| &nbsp;&nbsp; $1287229 | &nbsp;&nbsp; $5153688 | &nbsp;&nbsp; $4288561 | &nbsp;&nbsp; $83 | &nbsp;&nbsp; $334 | &nbsp;&nbsp; $2152773 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp; **Dividend** <br>**Income**<br>| &nbsp;&nbsp; **Capital Gain** <br>**Distributions**<br>|
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp; $37859 | $— |

---

------

**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.**

There is nothing to report for this item 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.**

------

MFS Core Bond Fund

**Board Review of Investment Advisory Agreement**

**MFS Core Bond Fund**

The Investment Company Act of 1940 requires that both the full Board of Trustees and a majority of the non-interested ("independent") Trustees, voting separately, annually approve the continuation of the Fund's investment advisory agreement with MFS. The Trustees consider matters bearing on the Fund and its advisory arrangements at their meetings throughout the year, including a review of performance data at each regular meeting. In addition, the independent Trustees met several times over the course of three months beginning in May and ending in July, 2025 ("contract review meetings") for the specific purpose of considering whether to approve the continuation of the investment advisory agreement for the Fund and the other investment companies that the Board oversees (the "MFS Funds"). The independent Trustees were assisted in their evaluation of the Fund's investment advisory agreement by independent legal counsel, from whom they received separate legal advice and with whom they met separately from MFS during various contract review meetings. The independent Trustees were also assisted in this process by an independent consultant who was retained by and reported to the independent Trustees.

In connection with their deliberations regarding the continuation of the investment advisory agreement, the Trustees, including the independent Trustees, considered such information and factors as they believed, in light of the legal advice furnished to them and their own business judgment, to be relevant. The investment advisory agreement for the Fund was considered separately, although the Trustees also took into account the common interests of all MFS Funds in their review. As described below, the Trustees considered the nature, quality, and extent of the various investment advisory, administrative, and shareholder services performed by MFS under the existing investment advisory agreement and other arrangements with the Fund.

In connection with their contract review meetings, the Trustees received and relied upon materials that included, among other items: (i) information provided by Broadridge Financial Solutions, Inc. ("Broadridge"), an independent third party, on the investment performance of the Fund for the one-year period ended December 31, 2024 and the investment performance of a group of funds with substantially similar investment classifications/objectives (the "Broadridge performance universe"), (ii) information provided by Broadridge on the Fund's advisory fees and other expenses and the advisory fees and other expenses of comparable funds identified by Broadridge as well as all other funds in the same investment classification/category (the "Broadridge expense group and universe"), (iii) information provided by MFS on the advisory fees of portfolios of other clients of MFS, including institutional separate accounts and other clients, (iv) information as to whether and to what extent applicable expense waivers, reimbursements or fee "breakpoints" are observed for the Fund, (v) information regarding MFS' financial results and financial condition, including MFS' and certain of its affiliates' estimated profitability from services performed for the Fund and the MFS Funds as a whole, and compared to MFS' institutional business, (vi) MFS' views regarding the outlook for the mutual fund industry and the strategic business plans of MFS, (vii) descriptions of various functions performed by MFS for the Funds, such as compliance monitoring and portfolio trading practices, and (viii) information regarding the overall organization of MFS, including information about MFS' senior management and other personnel providing investment advisory, administrative and other services to the Fund and the other MFS Funds. The comparative performance, fee and expense information prepared and provided by Broadridge was not independently verified and the independent Trustees did not independently verify any information provided to them by MFS.

The Trustees' conclusion as to the continuation of the investment advisory agreement was based on a comprehensive consideration of all information provided to the Trustees and not the result of any single factor. Some of the factors that figured particularly in the Trustees' deliberations are described below, although individual Trustees may have evaluated the information presented differently from one another, giving different weights to various factors. It is also important to recognize that the fee arrangements for the Fund and other MFS Funds are the result of years of review and discussion between the independent Trustees and MFS, that certain aspects of such arrangements may receive greater scrutiny in some years than in others, and that the Trustees' conclusions may be based, in part, on their consideration of these same arrangements during the course of the year and in prior years.

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over the one-year period ended December 31, 2024. The total return performance of the Fund's Class I shares was in the 2nd quintile relative to the other funds in the universe for this one-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The Fund commenced operations on June 22, 2022, and has a limited operating history and performance record; therefore, no performance data for the three- or five-year periods was available. Because of the passage of time, these performance results may differ from the performance results for more recent periods, including those shown elsewhere in this report.

In the course of their deliberations, the Trustees took into account information provided in connection with the contract review meetings as well as during investment review meetings conducted with portfolio management personnel during the course of the year regarding the Fund's performance. After reviewing these and related factors, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that they were satisfied with MFS' responses and efforts relating to investment performance.

------

MFS Core Bond Fund

*Board Review of Investment Advisory Agreement - continued*

In assessing the reasonableness of the Fund's advisory fee, the Trustees considered, among other information, the Fund's advisory fee and the total expense ratio of the Fund's Class I shares as a percentage of average daily net assets and the advisory fee and total expense ratios of the Broadridge expense group based on information provided by Broadridge. The Trustees considered that MFS currently observes an expense limitation for the Fund, which may not be changed without the Trustees' approval. The Trustees also considered that, according to the data provided by Broadridge (which takes into account any fee reductions or expense limitations that were in effect during the Fund's last fiscal year), the Fund's effective advisory fee rate and total expense ratio were each lower than the Broadridge expense group median.

The Trustees also considered the advisory fees charged by MFS to any institutional separate accounts advised by MFS ("separate accounts") and unaffiliated investment companies for which MFS serves as subadviser ("subadvised funds") that have comparable investment strategies to the Fund, if any. In comparing these fees, the Trustees considered information provided by MFS as to the generally broader scope of services provided by MFS to the Fund, as well as the more extensive regulatory burdens imposed on MFS in managing the Fund, in comparison to separate accounts and subadvised funds. The Trustees also considered the higher demands placed on MFS' investment personnel and trading infrastructure as a result of the daily cash in-flows and out-flows of the Fund in comparison to separate accounts.

The Trustees also considered whether the Fund may benefit from any economies of scale in the management of the Fund in the event of growth in assets of the Fund and/or growth in assets of the MFS Funds as a whole. They noted that the Fund's advisory fee rate schedule is subject to contractual breakpoints that reduce the Fund's advisory fee rate on average daily net assets over $1 billion and $2.5 billion. The Trustees also noted that MFS has agreed in writing to waive a portion of the management fees of certain MFS Funds, including the Fund, if the total combined assets of certain funds within the MFS Funds' complex increase above agreed upon thresholds (the "group fee waiver"), enabling the Fund's shareholders to share in the benefits from any economies of scale at the complex level. The group fee waiver is reviewed and renewed annually between the Board and MFS. The Trustees concluded that the breakpoints and the group fee waiver were sufficient to allow the Fund to benefit from economies of scale as its assets and overall complex assets grow.

The Trustees also considered information prepared by MFS relating to MFS' costs and profits with respect to the Fund, the MFS Funds considered as a group, and other investment companies and accounts advised by MFS, as well as MFS' methodologies used to determine and allocate its costs to the MFS Funds, the Fund, and other accounts and products for purposes of estimating profitability.

After reviewing these and other factors described herein, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that the advisory fees charged to the Fund represent reasonable compensation in light of the services being provided by MFS to the Fund.

In addition, the Trustees considered MFS' resources and related efforts to continue to retain, attract and motivate capable personnel to serve the Fund. The Trustees also considered current and developing conditions in the financial services industry, including the presence of large and well-capitalized companies which are spending, and appear to be prepared to continue to spend, substantial sums to engage personnel and to provide services to competing investment companies. In this regard, the Trustees also considered the financial resources of MFS and its ultimate parent, Sun Life Financial Inc. The Trustees also considered the advantages and possible disadvantages to the Fund of having an adviser that also serves other investment companies as well as other accounts.

The Trustees also considered the nature, quality, cost, and extent of administrative, transfer agency, and distribution services provided to the Fund by MFS and its affiliates under agreements and plans other than the investment advisory agreement, including any 12b-1 fees the Fund pays to MFS Fund Distributors, Inc., an affiliate of MFS. The Trustees also considered the nature, extent and quality of certain other services MFS performs or arranges for on the Fund's behalf, which may include securities lending programs, directed expense payment programs, class action recovery programs, and MFS' interaction with third-party service providers, principally custodians and sub-custodians. The Trustees concluded that the various non-advisory services provided by MFS and its affiliates on behalf of the Fund were satisfactory.

The Trustees considered so-called "fall-out benefits" to MFS such as reputational value derived from serving as investment manager to the MFS Funds. The Trustees also considered that MFS discontinued its historic practice of obtaining investment research from portfolio brokerage commissions paid by certain MFS Funds effective January 2018, and directly pays or voluntarily reimburses a Fund, if applicable, for the costs of external research acquired through the use of the Fund's portfolio brokerage commissions.

Based on their evaluation of factors that they deemed to be material, including those factors described above, the Board of Trustees, including the independent Trustees, concluded that the Fund's investment advisory agreement with MFS should be continued for an additional one-year period, commencing August 1, 2025.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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: Not applicable.

* 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](99.302.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](99.906.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: December 15, 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: December 15, 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: December 15, 2025

\* Print name and title of each signing officer under his or her signature.

------

## 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: December 15, 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: December 15, 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: December 15, 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: December 15, 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.**

------