# EDGAR Filing Document

**Accession Number:** 0000063075
**File Stem:** 0001145549-25-041461
**Filing Date:** 2025-6
**Character Count:** 1109272
**Document Hash:** 1f23eed906b897f80d73f3d0ef3fa9df
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-25-041461.hdr.sgml**: 20250625

**ACCESSION NUMBER**: 0001145549-25-041461

**CONFORMED SUBMISSION TYPE**: N-CSR

**PUBLIC DOCUMENT COUNT**: 53

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250625

**DATE AS OF CHANGE**: 20250625

**EFFECTIVENESS DATE**: 20250625

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS SERIES TRUST IX
- **CENTRAL INDEX KEY:** 0000063075

**ORGANIZATION NAME:**
- **EIN:** 042535629
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0430

**FILING VALUES:**
- **FORM TYPE:** N-CSR
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-02464
- **FILM NUMBER:** 251071631

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS SERIES TRUST IX /MA/
- **DATE OF NAME CHANGE:** 19951218

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS SERIES TRUST IX
- **DATE OF NAME CHANGE:** 19950207

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MFS BOND FUND
- **DATE OF NAME CHANGE:** 19930408

## Series and Classes Contracts Data

### MFS Corporate Bond Fund (Series ID: S000002492)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006711 | A            | MFBFX           |
| C000006712 | R4           | MFBJX           |
| C000006716 | B            | MFBBX           |
| C000006717 | C            | MFBCX           |
| C000006718 | I            | MBDIX           |
| C000006720 | R1           | MFBGX           |
| C000006722 | R2           | MBRRX           |
| C000006723 | R3           | MFBHX           |
| C000070424 | R6           | MFBKX           |

### MFS Limited Maturity Fund (Series ID: S000002495)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006744 | I            | MQLIX           |
| C000006745 | A            | MQLFX           |
| C000006746 | R4           | MQLJX           |
| C000006750 | B            | MQLBX           |
| C000006751 | C            | MQLCX           |
| C000006753 | R1           | MQLGX           |
| C000006755 | R2           | MLMRX           |
| C000006756 | R3           | MQLHX           |
| C000119776 | R6           | MQLKX           |

### MFS Municipal Limited Maturity Fund (Series ID: S000002496)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006757 | A            | MTLFX           |
| C000006758 | B            | MTLBX           |
| C000006759 | C            | MTLCX           |
| C000092113 | I            | MTLIX           |
| C000195152 | R6           | MTLRX           |

### MFS Total Return Bond Fund (Series ID: S000002497)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000006760 | A            | MRBFX           |
| C000006761 | R4           | MRBJX           |
| C000006765 | B            | MRBBX           |
| C000006766 | C            | MRBCX           |
| C000006767 | I            | MRBIX           |
| C000006769 | R1           | MRBGX           |
| C000006771 | R2           | MRRRX           |
| C000006772 | R3           | MRBHX           |
| C000034443 | R6           | MRBKX           |

?xml version='1.0' encoding='ASCII'? 8ddadb28f46a5fe

#### 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

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

------

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

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

#### Date of fiscal year end:

#### April 30\*

#### Date of reporting period:

#### April 30, 2025
\*This Form N-CSR pertains to the following series of the Registrant: MFS Corporate Bond Fund, MFS Limited Maturity Fund, MFS Municipal Limited Maturity Fund, and MFS Total Return Bond Fund. The remaining series of the Registrant has a fiscal year end of October 31.

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

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MFBFX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| A | $79 | 0.76% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Corporate Bond Fund (fund) provided a total return of 7.37%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035094.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 7.37% | 0.39% | 2.35% |
| A with initial sales charge (4.25%) | 2.81% | (0.47)% | 1.91% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBA-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MFBBX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| B | $156 | 1.51% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Corporate Bond Fund (fund) provided a total return of 6.58%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%.

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance.

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns.

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance.

Bond selection within the technology sector also weakened relative returns.

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035845.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 6.58% | (0.35)% | 1.60% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 2.58% | (0.68)% | 1.60% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| |
|:---|
| Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| Source: FactSet Research Systems Inc. |
| Assuming redemption at the end of the applicable period. |

---

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBB-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MFBCX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| C | $156 | 1.51% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Corporate Bond Fund (fund) provided a total return of 6.58%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%.

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance.

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns.

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance.

Bond selection within the technology sector also weakened relative returns.

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035672.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 6.58% | (0.36)% | 1.59% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 5.58% | (0.36)% | 1.59% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| |
|:---|
| Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| Source: FactSet Research Systems Inc. |
| Assuming redemption at the end of the applicable period. |

---

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBC-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MBDIX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| I | $53 | 0.51% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Corporate Bond Fund (fund) provided a total return of 7.64%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035657.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 7.64% | 0.63% | 2.59% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBI-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MFBGX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R1 | $156 | 1.51% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Corporate Bond Fund (fund) provided a total return of 6.58%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035483.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 6.58% | (0.36)% | 1.60% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBR1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MBRRX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R2 | $105 | 1.01% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Corporate Bond Fund (fund) provided a total return of 7.19%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035470.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 7.19% | 0.16% | 2.11% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBR2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MFBHX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R3 | $79 | 0.76% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Corporate Bond Fund (fund) provided a total return of 7.46%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035295.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 7.46% | 0.41% | 2.36% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBR3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MFBJX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R4 | $53 | 0.51% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Corporate Bond Fund (fund) provided a total return of 7.72%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035282.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 7.72% | 0.65% | 2.62% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBR4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Corporate Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MFBKX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R6 | $44 | 0.42% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Corporate Bond Fund (fund) provided a total return of 7.74%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg U.S. Credit Index, generated a return of 7.61%. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Credit Index:

Favorable bond selection within the BBB-rated credit quality segment, particularly within the banking sector, contributed to the fund's relative performance. 

The fund's out-of-benchmark exposure to BB-rated and Not Rated bonds also benefited relative returns. 

* Top detractors from performance relative to the Bloomberg U.S. Credit Index:

The fund's overweight exposure to the energy sector held back relative performance. 

Bond selection within the technology sector also weakened relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2035108.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R6 without sales charge | 7.74% | 0.72% | 2.70% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg U.S. Credit Index +∆ | 7.61% | 0.46% | 2.38% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg U.S. Credit Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg U.S. Credit Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 4529058920 | Average Effective Maturity (yrs): | 9.8 |
| Total Number of Holdings: | 423 | Average Effective Duration (yrs): | 6.7 |
| Total Management Fee ($)#: | 16892178 |  |  |
| Portfolio Turnover Rate (%): | 38 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 97.8% |
| Money Market Funds | 2.2% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 2.8% |
| AA | 3.2% |
| A | 29.9% |
| BBB | 52.4% |
| BB | 6.0% |
| B | 1.5% |
| U.S. Government | 2.0% |
| Not Rated | 0.0% |
| Money Market Funds | 2.2% |

---

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.

MFBR6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MQLFX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| A | $59 | 0.57% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Limited Maturity Fund (fund) provided a total return of 7.21%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034530.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 7.21% | 2.61% | 2.08% |
| A with initial sales charge (2.50%) | 4.53% | 2.09% | 1.82% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective May 1, 2024, Class A shares pays MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, a Contingent Deferred Sales Charge equal to 0.75% as a percentage of original purchase price or redemption proceeds, whichever is less. Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLA-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MQLBX

Annual Shareholder Report

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

**This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| B | $136 | 1.32% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Limited Maturity Fund (fund) provided a total return of 6.42%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%.

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results.

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns.

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance.

Yield curve positioning also held back the fund's relative returns.

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034356.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 6.42% | 1.84% | 1.33% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 2.42% | 1.47% | 1.33% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| |
|:---|
| Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| Source: FactSet Research Systems Inc. |
| Assuming redemption at the end of the applicable period. |

---

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLB-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MQLCX

Annual Shareholder Report

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

**This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| C | $146 | 1.42% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Limited Maturity Fund (fund) provided a total return of 6.31%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%.

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results.

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns.

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance.

Yield curve positioning also held back the fund's relative returns.

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034341.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 6.31% | 1.74% | 1.23% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 5.31% | 1.74% | 1.23% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| |
|:---|
| Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| Source: FactSet Research Systems Inc. |
| Assuming redemption at the end of the applicable period. |

---

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLC-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MQLIX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| I | $44 | 0.42% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Limited Maturity Fund (fund) provided a total return of 7.20%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034167.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 7.20% | 2.72% | 2.23% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLI-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MQLGX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R1 | $146 | 1.42% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Limited Maturity Fund (fund) provided a total return of 6.32%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034154.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 6.32% | 1.71% | 1.22% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLR1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MLMRX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R2 | $85 | 0.82% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Limited Maturity Fund (fund) provided a total return of 6.76%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2033979.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 6.76% | 2.35% | 1.82% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLR2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MQLHX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R3 | $69 | 0.67% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Limited Maturity Fund (fund) provided a total return of 6.92%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2033966.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 6.92% | 2.47% | 1.98% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLR3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MQLJX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R4 | $44 | 0.42% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Limited Maturity Fund (fund) provided a total return of 7.36%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2033791.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 7.36% | 2.77% | 2.27% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLR4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Limited Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MQLKX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R6 | $36 | 0.35% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Limited Maturity Fund (fund) provided a total return of 7.46%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. The fund's other benchmark, the Bloomberg 1-3 Year U.S. Government/Credit Bond Index, generated a return of 6.76%. 

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

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

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

* Top contributors to performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, bond selection within BBB and A-rated bonds benefited relative returns. 

* Top detractors from performance relative to the Bloomberg 1-3 Year U.S. Government/Credit Bond Index:

The fund's overweight exposure to AAA-rated bonds weighed on relative performance. 

Yield curve positioning also held back the fund's relative returns. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2033778.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R6 without sales charge | 7.46% | 2.83% | 2.32% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index +∆ | 8.02% | (0.67)% | 1.54% |
| Bloomberg 1-3 Year U.S. Government/Credit Bond Index +∆ | 6.76% | 1.59% | 1.80% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg U.S. Aggregate Bond Index replaced the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-3 Year U.S. Government/Credit Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 3130456300 | Average Effective Maturity (yrs): | 2.3 |
| Total Number of Holdings: | 377 | Average Effective Duration (yrs): | 2.0 |
| Total Management Fee ($)#: | 10181386 |  |  |
| Portfolio Turnover Rate (%): | 37 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 11.7% |
| AA | 9.0% |
| A | 19.4% |
| BBB | 33.4% |
| BB | 0.0% |
| CCC | 0.0% |
| CC | 0.1% |
| U.S. Government | 24.5% |
| Federal Agencies | 0.5% |
| Not Rated | 0.0% |
| Money Market Funds | 1.4% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective August 1, 2024, the management fee is computed daily and paid monthly at the following annual rates based on the fund's average daily net assets: 0.40% up to $1 billion; 0.35% in excess of $1 billion and up to $2.5 billion; 0.30% in excess of $2.5 billion and up to $5 billion; and 0.29% in excess of $5 billion.

#### 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.

MQLR6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Municipal Limited

Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MTLFX

Annual Shareholder Report

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

 **This report describes certain changes to the Fund that occurred during the reporting period.**

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| A | $59 | 0.58% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Municipal Limited Maturity Fund (fund) provided a total return of 3.52%, at net asset value. This compares with a return of 1.66% for the fund's benchmark, the Bloomberg Municipal Bond Index. The fund's other benchmark, the Bloomberg 1-9 Year Municipal Bond Index, generated a return of 2.75%. 

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

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

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

* Turning to municipals, the index for this fund generated a return of 2.75% for the period. Securities in the lower-rated investment grade credit quality tiers and bonds with shorter maturities outperformed. The intermediate and long segments of the yield curve rose. Yields of the shorter maturity segment declined, and the municipal curve moved from inversion to its typical upward slope. The yield (yield-to-worst) of the index for this fund ended the period at 3.49%, well above its five-year average. 

* Top contributors to performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

The fund's greater-than-benchmark exposure to both the industrial revenue and housing sectors strengthened relative performance. An out-of-benchmark exposure to Not Rated bonds also helped relative results. 

Security selection within both the housing and education sectors further benefited the fund's relative returns. 

* Top detractors from performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

Bond selection within the industrial revenue sector weighed on the fund's relative performance. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034919.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 3.52% | 1.68% | 1.72% |
| A with initial sales charge (2.50%) | 0.94% | 1.16% | 1.46% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg Municipal Bond Index +∆ | 1.66% | 1.17% | 2.10% |
| Bloomberg 1-9 Year Municipal Bond Index +∆ | 2.75% | 1.25% | 1.62% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg Municipal Bond Index replaced the Bloomberg 1-9 Year Municipal Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-9 Year Municipal Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 2635904918 | Average Effective Maturity (yrs): | 4.9 |
| Total Number of Holdings: | 1171 | Average Effective Duration (yrs): | 3.5 |
| Total Management Fee ($)#: | 8735350 |  |  |
| Portfolio Turnover Rate (%): | 29 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.3% |
| Money Market Funds | 1.7% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.4% |
| AA | 27.6% |
| A | 31.8% |
| BBB | 17.9% |
| BB | 4.0% |
| B | 0.5% |
| CC | 0.0% |
| Not Rated | 6.1% |
| Money Market Funds | 1.7% |

---

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.

#### MATERIAL FUND CHANGES
This is a summary of certain changes to the fund since May 1, 2024. For more complete information, you may review the fund's prospectus, which is available at funds.mfs.com or upon request at 1-800-225-2606.

Effective May 1, 2024, Class A shares pays MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, a Contingent Deferred Sales Charge equal to 0.75% as a percentage of original purchase price or redemption proceeds, whichever is less.

#### 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.

MTLA-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Municipal Limited

Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MTLBX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| B | $135 | 1.33% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Municipal Limited Maturity Fund (fund) provided a total return of 2.89%, at net asset value. This compares with a return of 1.66% for the fund's benchmark, the Bloomberg Municipal Bond Index. The fund's other benchmark, the Bloomberg 1-9 Year Municipal Bond Index, generated a return of 2.75%.

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

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

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

* Turning to municipals, the index for this fund generated a return of 2.75% for the period. Securities in the lower-rated investment grade credit quality tiers and bonds with shorter maturities outperformed. The intermediate and long segments of the yield curve rose. Yields of the shorter maturity segment declined, and the municipal curve moved from inversion to its typical upward slope. The yield (yield-to-worst) of the index for this fund ended the period at 3.49%, well above its five-year average.

* Top contributors to performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

The fund's greater-than-benchmark exposure to both the industrial revenue and housing sectors strengthened relative performance. An out-of-benchmark exposure to Not Rated bonds also helped relative results.

Security selection within both the housing and education sectors further benefited the fund's relative returns.

* Top detractors from performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

Bond selection within the industrial revenue sector weighed on the fund's relative performance.

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034905.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 2.89% | 0.95% | 0.98% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | (1.11)% | 0.57% | 0.98% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg Municipal Bond Index +∆ | 1.66% | 1.17% | 2.10% |
| Bloomberg 1-9 Year Municipal Bond Index +∆ | 2.75% | 1.25% | 1.62% |

---

---

| |
|:---|
| Effective May 1, 2024, the Bloomberg Municipal Bond Index replaced the Bloomberg 1-9 Year Municipal Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-9 Year Municipal Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| Source: FactSet Research Systems Inc. |
| Assuming redemption at the end of the applicable period. |

---

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 2635904918 | Average Effective Maturity (yrs): | 4.9 |
| Total Number of Holdings: | 1171 | Average Effective Duration (yrs): | 3.5 |
| Total Management Fee ($)#: | 8735350 |  |  |
| Portfolio Turnover Rate (%): | 29 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.3% |
| Money Market Funds | 1.7% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.4% |
| AA | 27.6% |
| A | 31.8% |
| BBB | 17.9% |
| BB | 4.0% |
| B | 0.5% |
| CC | 0.0% |
| Not Rated | 6.1% |
| Money Market Funds | 1.7% |

---

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.

MTLB-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Municipal Limited

Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MTLCX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| C | $145 | 1.43% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Municipal Limited Maturity Fund (fund) provided a total return of 2.79%, at net asset value. This compares with a return of 1.66% for the fund's benchmark, the Bloomberg Municipal Bond Index. The fund's other benchmark, the Bloomberg 1-9 Year Municipal Bond Index, generated a return of 2.75%.

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

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

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

* Turning to municipals, the index for this fund generated a return of 2.75% for the period. Securities in the lower-rated investment grade credit quality tiers and bonds with shorter maturities outperformed. The intermediate and long segments of the yield curve rose. Yields of the shorter maturity segment declined, and the municipal curve moved from inversion to its typical upward slope. The yield (yield-to-worst) of the index for this fund ended the period at 3.49%, well above its five-year average.

* Top contributors to performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

The fund's greater-than-benchmark exposure to both the industrial revenue and housing sectors strengthened relative performance. An out-of-benchmark exposure to Not Rated bonds also helped relative results.

Security selection within both the housing and education sectors further benefited the fund's relative returns.

* Top detractors from performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

Bond selection within the industrial revenue sector weighed on the fund's relative performance.

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034733.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 2.79% | 0.85% | 0.87% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 1.79% | 0.85% | 0.87% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg Municipal Bond Index +∆ | 1.66% | 1.17% | 2.10% |
| Bloomberg 1-9 Year Municipal Bond Index +∆ | 2.75% | 1.25% | 1.62% |

---

---

| |
|:---|
| Effective May 1, 2024, the Bloomberg Municipal Bond Index replaced the Bloomberg 1-9 Year Municipal Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-9 Year Municipal Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| Source: FactSet Research Systems Inc. |
| Assuming redemption at the end of the applicable period. |

---

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 2635904918 | Average Effective Maturity (yrs): | 4.9 |
| Total Number of Holdings: | 1171 | Average Effective Duration (yrs): | 3.5 |
| Total Management Fee ($)#: | 8735350 |  |  |
| Portfolio Turnover Rate (%): | 29 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.3% |
| Money Market Funds | 1.7% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.4% |
| AA | 27.6% |
| A | 31.8% |
| BBB | 17.9% |
| BB | 4.0% |
| B | 0.5% |
| CC | 0.0% |
| Not Rated | 6.1% |
| Money Market Funds | 1.7% |

---

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.

MTLC-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Municipal Limited

Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MTLIX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| I | $44 | 0.43% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Municipal Limited Maturity Fund (fund) provided a total return of 3.81%, at net asset value. This compares with a return of 1.66% for the fund's benchmark, the Bloomberg Municipal Bond Index. The fund's other benchmark, the Bloomberg 1-9 Year Municipal Bond Index, generated a return of 2.75%. 

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

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

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

* Turning to municipals, the index for this fund generated a return of 2.75% for the period. Securities in the lower-rated investment grade credit quality tiers and bonds with shorter maturities outperformed. The intermediate and long segments of the yield curve rose. Yields of the shorter maturity segment declined, and the municipal curve moved from inversion to its typical upward slope. The yield (yield-to-worst) of the index for this fund ended the period at 3.49%, well above its five-year average. 

* Top contributors to performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

The fund's greater-than-benchmark exposure to both the industrial revenue and housing sectors strengthened relative performance. An out-of-benchmark exposure to Not Rated bonds also helped relative results. 

Security selection within both the housing and education sectors further benefited the fund's relative returns. 

* Top detractors from performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

Bond selection within the industrial revenue sector weighed on the fund's relative performance. 

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

Growth of a Hypothetical $10,000 Investment

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

![Fund Performance - Growth of 10K](chartimages_2034718.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 3.81% | 1.85% | 1.88% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg Municipal Bond Index +∆ | 1.66% | 1.17% | 2.10% |
| Bloomberg 1-9 Year Municipal Bond Index +∆ | 2.75% | 1.25% | 1.62% |

---

---

| | |
|:---|:---|
| + | Effective May 1, 2024, the Bloomberg Municipal Bond Index replaced the Bloomberg 1-9 Year Municipal Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-9 Year Municipal Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 2635904918 | Average Effective Maturity (yrs): | 4.9 |
| Total Number of Holdings: | 1171 | Average Effective Duration (yrs): | 3.5 |
| Total Management Fee ($)#: | 8735350 |  |  |
| Portfolio Turnover Rate (%): | 29 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.3% |
| Money Market Funds | 1.7% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.4% |
| AA | 27.6% |
| A | 31.8% |
| BBB | 17.9% |
| BB | 4.0% |
| B | 0.5% |
| CC | 0.0% |
| Not Rated | 6.1% |
| Money Market Funds | 1.7% |

---

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.

MTLI-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Municipal Limited

Maturity Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MTLRX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R6 | $37 | 0.36% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Municipal Limited Maturity Fund (fund) provided a total return of 3.75%, at net asset value. This compares with a return of 1.66% for the fund's benchmark, the Bloomberg Municipal Bond Index. The fund's other benchmark, the Bloomberg 1-9 Year Municipal Bond Index, generated a return of 2.75%. 

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

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

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

* Turning to municipals, the index for this fund generated a return of 2.75% for the period. Securities in the lower-rated investment grade credit quality tiers and bonds with shorter maturities outperformed. The intermediate and long segments of the yield curve rose. Yields of the shorter maturity segment declined, and the municipal curve moved from inversion to its typical upward slope. The yield (yield-to-worst) of the index for this fund ended the period at 3.49%, well above its five-year average. 

* Top contributors to performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

The fund's greater-than-benchmark exposure to both the industrial revenue and housing sectors strengthened relative performance. An out-of-benchmark exposure to Not Rated bonds also helped relative results. 

Security selection within both the housing and education sectors further benefited the fund's relative returns. 

* Top detractors from performance relative to the Bloomberg 1-9 Year Municipal Bond Index:

Bond selection within the industrial revenue sector weighed on the fund's relative performance. 

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

Growth of a Hypothetical $10,000 Investment\*

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

![Fund Performance - Growth of 10K](chartimages_2034544.jpg)

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

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **Life\*** |
| R6 without sales charge | 3.75% | 1.90% | 1.82% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg Municipal Bond Index +∆ | 1.66% | 1.17% | 1.67% |
| Bloomberg 1-9 Year Municipal Bond Index +∆ | 2.75% | 1.25% | 1.45% |

---

---

| | |
|:---|:---|
| \* | For the period from the commencement of the class's investment operations, September 1, 2017 through April 30, 2025. |
| + | Effective May 1, 2024, the Bloomberg Municipal Bond Index replaced the Bloomberg 1-9 Year Municipal Bond Index as a broad measure of market performance in accordance with new regulatory disclosure requirements. The fund continues to use the Bloomberg 1-9 Year Municipal Bond Index as an additional benchmark that MFS believes more closely reflects the market segments in which the fund invests. |
| ∆ | Source: FactSet Research Systems Inc. |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 2635904918 | Average Effective Maturity (yrs): | 4.9 |
| Total Number of Holdings: | 1171 | Average Effective Duration (yrs): | 3.5 |
| Total Management Fee ($)#: | 8735350 |  |  |
| Portfolio Turnover Rate (%): | 29 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.3% |
| Money Market Funds | 1.7% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.4% |
| AA | 27.6% |
| A | 31.8% |
| BBB | 17.9% |
| BB | 4.0% |
| B | 0.5% |
| CC | 0.0% |
| Not Rated | 6.1% |
| Money Market Funds | 1.7% |

---

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.

MTLR6-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class A-MRBFX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| A | $62 | 0.60% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class A shares of the MFS Total Return Bond Fund (fund) provided a total return of 8.14%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2033603.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 8.14% | 0.52% | 1.80% |
| A with initial sales charge (4.25%) | 3.55% | (0.35)% | 1.36% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFA-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class B-MRBBX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| B | $140 | 1.35% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class B shares of the MFS Total Return Bond Fund (fund) provided a total return of 7.33%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index.

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results.

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance.

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns.

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance.

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033590.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 7.33% | (0.23)% | 1.05% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 3.33% | (0.58)% | 1.05% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFB-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class C-MRBCX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| C | $150 | 1.45% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class C shares of the MFS Total Return Bond Fund (fund) provided a total return of 7.23%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index.

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results.

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance.

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns.

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance.

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033415.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 7.23% | (0.35)% | 0.94% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 6.23% | (0.35)% | 0.94% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

CDSC – Contingent Deferred Sales Charge.

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

*#* Includes the effect of any management fee waivers, if applicable.

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

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

**Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

**Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFC-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class I-MRBIX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| I | $47 | 0.45% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class I shares of the MFS Total Return Bond Fund (fund) provided a total return of 8.30%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033402.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 8.30% | 0.65% | 1.95% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFI-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R1-MRBGX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R1 | $150 | 1.45% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R1 shares of the MFS Total Return Bond Fund (fund) provided a total return of 7.23%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033227.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 7.23% | (0.33)% | 0.95% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFR1-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R2-MRRRX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R2 | $99 | 0.95% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R2 shares of the MFS Total Return Bond Fund (fund) provided a total return of 7.77%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033214.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 7.77% | 0.16% | 1.45% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFR2-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R3-MRBHX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R3 | $73 | 0.70% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R3 shares of the MFS Total Return Bond Fund (fund) provided a total return of 8.04%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033039.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 8.04% | 0.41% | 1.71% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFR3-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R4-MRBJX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R4 | $47 | 0.45% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R4 shares of the MFS Total Return Bond Fund (fund) provided a total return of 8.30%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2033025.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 8.30% | 0.65% | 1.95% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFR4-ANN

![MFSLOGO_RED.EPS](images_1120.jpg)

MFS<sup>®</sup> Total Return

Bond Fund

![TSR_Ribbon_red](images_1124.jpg)

Class R6-MRBKX

Annual Shareholder Report

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

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R6 | $36 | 0.35% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended April 30, 2025, Class R6 shares of the MFS Total Return Bond Fund (fund) provided a total return of 8.41%, at net asset value. This compares with a return of 8.02% for the fund's benchmark, the Bloomberg U.S. Aggregate Bond Index. 

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

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

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

* Top contributors to performance relative to the Bloomberg U.S. Aggregate Bond Index:

The fund's out-of-benchmark exposure to the collateralized mortgage obligation (CMO) sector and underweight exposure to the treasury sector contributed to relative performance. Bond selection within both the financial institutions and industrials sectors also supported relative results. 

From a quality perspective, the fund's underweight exposure to A-rated bonds, combined with favorable bond selection within this credit quality segment, benefited relative returns. Bond selection within BBB-rated securities also strengthened relative performance. 

* Top detractors from performance relative to the Bloomberg U.S. Aggregate Bond Index:

Bond selection and the fund's underweight exposure to the mortgage backed securities (MBS) agency fixed rate sector weighed on relative performance. An overweight exposure to the industrials sector further held back relative returns. 

From a quality perspective, the fund's overweight exposure to AAA-rated bonds, combined with weak bond selection within AA-rated securities, detracted from relative performance. 

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

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to a broad measure of market performance.

![Fund Performance - Growth of 10K](chartimages_2032851.jpg)

#### Average Annual Total Returns through 4/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of a broad measure of market performance over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R6 without sales charge | 8.41% | 0.75% | 2.06% |
| **Comparative Benchmark(s)** |  |  |  |
| Bloomberg U.S. Aggregate Bond Index ∆ | 8.02% | (0.67)% | 1.54% |

---

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

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

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

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

FUND STATISTICS AS OF 4/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 8090663353 | Average Effective Maturity (yrs): | 7.7 |
| Total Number of Holdings: | 1104 | Average Effective Duration (yrs): | 6.0 |
| Total Management Fee ($)#: | 28045879 |  |  |
| Portfolio Turnover Rate (%): | 75 |  |  |

---

 *#* Includes the effect of any management fee waivers, if applicable.

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

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

 **Portfolio structure**

---

| | |
|:---|:---|
| Fixed Income | 98.6% |
| Money Market Funds | 1.4% |

---

 **Composition including fixed income credit quality**

---

| | |
|:---|:---|
| AAA | 10.0% |
| AA | 4.9% |
| A | 10.3% |
| BBB | 22.9% |
| BB | 4.5% |
| B | 2.0% |
| CCC | 0.0% |
| CC | 0.0% |
| U.S. Government | 25.5% |
| Federal Agencies | 18.3% |
| Not Rated | 0.2% |
| Money Market Funds | 1.4% |

---

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.

RBFR6-ANN

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Item 1(b):
Not applicable.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 2. CODE OF ETHICS.
The Registrant has adopted a Code of Ethics (the "Code") pursuant to Section 406 of the Sarbanes-Oxley Act and as defined in Form N-CSR that applies to the Registrant's principal executive officer and principal financial and accounting officer. During the period covered by this report, the Registrant has not amended any provision in the Code that relates to an element of the Code's definition enumerated in paragraph (b) of Item 2 of this Form N-CSR. During the period covered by this report, the Registrant did not grant a waiver, including an implicit waiver, from any provision of the Code. A copy of the Code is attached hereto as EX-99.COE.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.
Messrs. Steven E. Buller, Clarence Otis, Jr., and Darrell A. Williams, members of the Audit Committee, have been determined by the Board of Trustees in their reasonable business judgment to meet the definition of "audit committee financial expert" as such term is defined in Form N-CSR. In addition, Messrs. Buller, Otis, and Williams are "independent" members of the Audit Committee (as such term has been defined by the Securities and Exchange Commission in regulations implementing Section 407 of the Sarbanes-Oxley Act of 2002). The Securities and Exchange Commission has stated that the designation of a person as an audit committee financial expert pursuant to this Item 3 on the Form N-CSR does not impose on such a person any duties, obligations or liability that are greater than the duties, obligations or liability imposed on such person as a member of the Audit Committee and the Board of Trustees in the absence of such designation or identification.

------

![](geogxpxkzovnv2xk7cydx.jpg)

**ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.**

**Items 4(a) through 4(d) and 4(g):**

The Board of Trustees has appointed Deloitte & Touche LLP ("Deloitte") to serve as independent accountants to a series of the Registrant (each a "Fund" and collectively the "Funds"). The tables below set forth the audit fees billed to each Fund as well as fees for non-audit services provided to each Fund and/or to the Fund's investment adviser, Massachusetts Financial Services Company ("MFS"), and to various entities either controlling, controlled by, or under common control with MFS that provide ongoing services to the Fund ("MFS Related Entities").

For the fiscal years ended April 30, 2025 and 2024, audit fees billed to each Fund by Deloitte were as follows:

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Fees billed by Deloitte:** |  | **Audit Fees** |
|  | **2025** | **2024** |
| &nbsp;&nbsp;MFS Corporate Bond Fund | 71432 | 68800 |
| &nbsp;&nbsp;MFS Limited Maturity Fund | 68204 | 65648 |
| &nbsp;&nbsp;MFS Municipal Limited Maturity Fund | 60294 | 58167 |
| &nbsp;&nbsp;MFS Total Return Bond Fund | 80300 | 82847 |
| &nbsp;&nbsp;**Total** | **280230** | **275462** |

---

For the fiscal years ended April 30, 2025 and 2024, fees billed by Deloitte for audit-related, tax and other services provided to each Fund and for audit-related, tax and other services provided to MFS and MFS Related Entities were as follows:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Fees billed by Deloitte:** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | **Tax Fees<sup>2</sup>** | **Tax Fees<sup>2</sup>** | **All Other Fees<sup>3</sup>** | **All Other Fees<sup>3</sup>** |
|  | **2025** | **2024** | &nbsp;&nbsp;&nbsp;&nbsp;**2025** | **2024** | **2025** | **2024** |
| &nbsp;&nbsp;To MFS Corporate Bond Fund | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Limited Maturity Fund | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 0 | 0 |
| &nbsp;&nbsp;To MFS Municipal Limited | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 0 | 0 |
| &nbsp;&nbsp;Maturity Fund |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS Total Return Bond Fund | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 0 | 0 |
| &nbsp;&nbsp;**Total fees billed by Deloitte** | **0** | **0** | &nbsp;&nbsp;&nbsp;&nbsp;**0** | **0** | **0** | **0** |
| &nbsp;&nbsp;**To above Funds:** |  |  |  |  |  |  |
| &nbsp;&nbsp;**Fees billed by Deloitte:** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | **Tax Fees<sup>2</sup>** | **Tax Fees<sup>2</sup>** | **All Other Fees<sup>3</sup>** | **All Other Fees<sup>3</sup>** |
|  | **2025** | **2024** | &nbsp;&nbsp;&nbsp;&nbsp;**2025** | **2024** | **2025** | **2024** |
| &nbsp;&nbsp;To MFS and MFS Related | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 452513 | 0 |
| &nbsp;&nbsp;Entities of MFS Corporate Bond Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS and MFS Related Entities | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 452513 | 0 |
| &nbsp;&nbsp;of MFS Limited Maturity Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS and MFS Related Entities of | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 452513 | 0 |
| &nbsp;&nbsp;MFS Municipal Limited Maturity Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS and MFS Related Entities | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;0 | 0 | 452513 | 0 |
| &nbsp;&nbsp;of MFS Total Return Bond Fund<sup>\*</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;**Fees billed by Deloitte:** |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Aggregate Fees for Non-audit Services** |
|  |  |  |  | **2025** |  | **2024** |
| &nbsp;&nbsp;To MFS Corporate Bond Fund, MFS and MFS Related | &nbsp;&nbsp;To MFS Corporate Bond Fund, MFS and MFS Related | &nbsp;&nbsp;To MFS Corporate Bond Fund, MFS and MFS Related |  | 470440 |  | 0 |
| &nbsp;&nbsp;Entities<sup>#</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS Limited Maturity Fund, MFS and MFS | &nbsp;&nbsp;To MFS Limited Maturity Fund, MFS and MFS |  |  | 470440 |  | 0 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS Municipal Limited Maturity Fund, MFS and | &nbsp;&nbsp;To MFS Municipal Limited Maturity Fund, MFS and | &nbsp;&nbsp;To MFS Municipal Limited Maturity Fund, MFS and |  | 470440 |  | 0 |
| &nbsp;&nbsp;MFS Related Entities<sup>#</sup> |  |  |  |  |  |  |
| &nbsp;&nbsp;To MFS Total Return Bond Fund, MFS and MFS | &nbsp;&nbsp;To MFS Total Return Bond Fund, MFS and MFS |  |  | 470440 |  | 0 |
| &nbsp;&nbsp;Related Entities<sup>#</sup> |  |  |  |  |  |  |

---

\*This amount reflects the fees billed to MFS and MFS Related Entities for non-audit services relating directly to the operations and financial reporting of the Funds (portions of which services also related to the operations and financial reporting of other funds within the MFS Funds complex).

# This amount reflects the aggregate fees billed by Deloitte, as the case may be, for non-audit services rendered to the Funds and for non-audit services rendered to MFS and the MFS Related Entities. If applicable the fees are converted to USD as of the payment date.

1The fees included under "Audit-Related Fees" are fees related to assurance and related services that are reasonably related to the performance of the audit or review of financial statements, but not reported under ''Audit Fees,'' including accounting consultations, agreed-upon procedure reports, attestation reports, comfort letters and internal control reviews.

2The fees included under "Tax Fees" are fees associated with tax compliance, tax advice and tax planning, including services relating to the filing or amendment of federal, state or local income tax returns, regulated investment company qualification reviews and tax distribution and analysis.

3The fees included under "All Other Fees" are fees for products and services provided by Deloitte other than those reported under "Audit Fees," "Audit-Related Fees" and "Tax Fees".

**Item 4(e)(1):**

Set forth below are the policies and procedures established by the Audit Committee of the Board of Trustees relating to the pre- approval of audit and non-audit related services:

To the extent required by applicable law, pre-approval by the Audit Committee of the Board is needed for all audit and permissible non-audit services rendered to the Fund and all permissible non-audit services rendered to MFS or MFS Related Entities if the services relate directly to the operations and financial reporting of the Registrant. Pre-approval is currently on an engagement-by-engagement basis. In the event pre-approval of such services is necessary between regular meetings of the Audit Committee and it is not practical to wait to seek pre-approval at the next regular meeting of the Audit Committee, pre-approval of such services may be referred to the Chair of the Audit Committee for approval; provided that the Chair may not pre-approve any individual engagement for such services exceeding $50,000 or multiple engagements for such services in the aggregate exceeding $100,000 in each period between regular meetings of the Audit Committee. Any engagement pre-approved by the Chair between regular meetings of the Audit Committee shall be presented for ratification by the entire Audit Committee at its next regularly scheduled meeting.

**Item 4(e)(2):**

None, or 0%, of the services relating to the Audit-Related Fees, Tax Fees and All Other Fees paid by the Fund and MFS and MFS Related Entities relating directly to the operations and financial reporting of the Registrant disclosed above were approved by the audit committee pursuant to paragraphs (c)(7)(i)(C) of Rule 2-01 of Regulation S-X (which permits audit committee approval after the start of the engagement with respect to services other than audit, review or attest services, if certain conditions are satisfied).

**Item 4(f):**

Not applicable.

**Item 4(h):**

The Registrant's Audit Committee has considered whether the provision by a Registrant's independent registered public accounting firm of non-audit services to MFS and MFS Related Entities that were not pre-approved by the Committee (because such services did not relate directly to the operations and financial reporting of the Registrant) was compatible with maintaining the independence of the independent registered public accounting firm as the Registrant's principal auditors.

**Item 4(i):**

Not applicable.

**Item 4(j):**

Not applicable.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 6. INVESTMENTS
A schedule of investments for each series covered by this Form N-CSR is included in the financial statements of such series under Item 7 of this Form N-CSR.

------

MFS Corporate Bond Fund

#### ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
MFS Corporate Bond Fund

### Portfolio of Investments - 4/30/25
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – 97.1% | Bonds – 97.1% | Bonds – 97.1% |
| Aerospace & Defense – 2.1% | Aerospace & Defense – 2.1% | Aerospace & Defense – 2.1% |
| Boeing Co., 2.196%, 2/04/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;8727000 | &nbsp;&nbsp;$8550453 |
| Boeing Co., 5.15%, 5/01/2030 | &nbsp;&nbsp;15298000 | &nbsp;&nbsp;&nbsp;&nbsp; **15443751** |
| Boeing Co., 6.388%, 5/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;6580000 | &nbsp;&nbsp;&nbsp;&nbsp; **7021299** |
| Boeing Co., 5.805%, 5/01/2050 | &nbsp;&nbsp;33463000 | &nbsp;&nbsp;&nbsp;&nbsp; **31365302** |
| Huntington Ingalls Industries, Inc., 5.749%, 1/15/2035 | &nbsp;&nbsp;&nbsp;&nbsp;4416000 | &nbsp;&nbsp;&nbsp;&nbsp; **4499830** |
| L3 Harris Technologies, Inc., 5.4%, 7/31/2033 | &nbsp;&nbsp;&nbsp;&nbsp;9532000 | &nbsp;&nbsp;&nbsp;&nbsp; **9682501** |
| TransDigm, Inc., 6.875%, 12/15/2030 (n) | &nbsp;&nbsp;15962000 | &nbsp;&nbsp;&nbsp;&nbsp; **16446495** |
|  |  | &nbsp;&nbsp; **$93009631** |
| Asset-Backed & Securitized – 2.6% | Asset-Backed & Securitized – 2.6% | Asset-Backed & Securitized – 2.6% |
| 3650R Commercial Mortgage Trust, 2021-PF1, "XA", 1.113%, 11/15/2054 (i) | $110834657 | &nbsp;&nbsp;$4449679 |
| ACREC 2021-FL1 Ltd., "A", FLR, 5.584% ((SOFR - 1mo. + 0.11448%) + 1.15%), 10/16/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7822044 | &nbsp;&nbsp;&nbsp;&nbsp; **7797498** |
| Angel Oak Mortgage Trust, 2024-13, "A1", 5.464%, 12/26/2069 (n) | &nbsp;&nbsp;11797811 | &nbsp;&nbsp;&nbsp;&nbsp; **11795023** |
| Arbor Realty Trust, Inc., CLO, 2021-FL4, "AS", FLR, 6.136% ((SOFR - 1mo. + 0.11448%) + 1.7%), 11/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4841000 | &nbsp;&nbsp;&nbsp;&nbsp; **4839218** |
| ARI Fleet Lease Trust, 2023-A, "A2", 5.41%, 2/17/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1329806 | &nbsp;&nbsp;&nbsp;&nbsp; **1331145** |
| Bayview Financial Revolving Mortgage Loan Trust, FLR, 6.034% ((SOFR - 1mo. + 0.11448%) + 1.6%), 12/28/2040 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;163676 | &nbsp;&nbsp;&nbsp;&nbsp; **318798** |
| Benchmark 2021-B27 Mortgage Trust, "XA", 1.35%, 7/15/2054 (i) | 194394633 | &nbsp;&nbsp;&nbsp;&nbsp; **10566476** |
| Colt Funding LLC, 2024-6, "A1", 5.39%, 11/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9415891 | &nbsp;&nbsp;&nbsp;&nbsp; **9433097** |
| ELM Trust, 2024-ELM, "A10", 5.801%, 6/10/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5091611 | &nbsp;&nbsp;&nbsp;&nbsp; **5162497** |
| ELM Trust, 2024-ELM, "D10", 6.626%, 6/10/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4848307 | &nbsp;&nbsp;&nbsp;&nbsp; **4878114** |
| KREF 2018-FT1 Ltd., "A", FLR, 5.513% ((SOFR - 1mo. + 0.11448%) + 1.07%), 2/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4038978 | &nbsp;&nbsp;&nbsp;&nbsp; **4018056** |
| KREF 2018-FT1 Ltd., "AS", FLR, 5.743% ((SOFR - 1mo. + 0.11448%) + 1.3%), 2/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9074500 | &nbsp;&nbsp;&nbsp;&nbsp; **9004145** |
| LAD Auto Receivables Trust, 2023-2A, "A2", 5.93%, 6/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;787658 | &nbsp;&nbsp;&nbsp;&nbsp; **788280** |
| MF1 2024-FL5 Ltd., "A", FLR, 6.008% (SOFR - 1mo. + 1.688%), 8/18/2041 (n) | &nbsp;&nbsp;14356000 | &nbsp;&nbsp;&nbsp;&nbsp; **14357996** |
| MF1 2022-FL8 Ltd., "A", FLR, 5.669% (SOFR - 1mo. + 1.35%), 2/19/2037 (n) | &nbsp;&nbsp;10596397 | &nbsp;&nbsp;&nbsp;&nbsp; **10546192** |
| Morgan Stanley Residential Mortgage Loan Trust, 2024-NQM3, "A-1", 5.044%, 7/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4945378 | &nbsp;&nbsp;&nbsp;&nbsp; **4915918** |
| OBX Trust, 2024-NQM1, "A1", 5.928%, 11/25/2063 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3512894 | &nbsp;&nbsp;&nbsp;&nbsp; **3524715** |
| OBX Trust, 2024-NQM15, "A1", 5.316%, 10/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2726357 | &nbsp;&nbsp;&nbsp;&nbsp; **2723707** |
| OBX Trust, 2024-NQM3, "A1", 6.129%, 12/25/2063 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4449084 | &nbsp;&nbsp;&nbsp;&nbsp; **4478143** |
| SBNA Auto Lease Trust, 2023-A, "A2", 6.27%, 4/20/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;90641 | &nbsp;&nbsp;&nbsp;&nbsp; **90719** |
| Virginia Power Fuel Securitization LLC, 5.088%, 5/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;4707094 | &nbsp;&nbsp;&nbsp;&nbsp; **4746349** |
|  |  | &nbsp;&nbsp; **$119765765** |
| Automotive – 1.3% | Automotive – 1.3% | Automotive – 1.3% |
| Cummins, Inc., 5.45%, 2/20/2054 | $&nbsp;&nbsp;&nbsp;&nbsp;7545000 | &nbsp;&nbsp;$7198515 |
| Ford Motor Credit Co. LLC, 5.8%, 3/05/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8394000 | &nbsp;&nbsp;&nbsp;&nbsp; **8345233** |
| Ford Motor Credit Co. LLC, 4.95%, 5/28/2027 | &nbsp;&nbsp;10040000 | &nbsp;&nbsp;&nbsp;&nbsp; **9827544** |
| Ford Motor Credit Co. LLC, 5.8%, 3/08/2029 | &nbsp;&nbsp;&nbsp;&nbsp;9607000 | &nbsp;&nbsp;&nbsp;&nbsp; **9432178** |
| Ford Motor Credit Co. LLC, 5.113%, 5/03/2029 | &nbsp;&nbsp;11273000 | &nbsp;&nbsp;&nbsp;&nbsp; **10811499** |
| Ford Motor Credit Co. LLC, 3.25%, 2/12/2032 | &nbsp;&nbsp;&nbsp;&nbsp;7976000 | &nbsp;&nbsp;&nbsp;&nbsp; **6517404** |
| Volkswagen Group of America Finance LLC, 6.2%, 11/16/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8166000 | &nbsp;&nbsp;&nbsp;&nbsp; **8469317** |
|  |  | &nbsp;&nbsp; **$60601690** |
| Broadcasting – 1.3% | Broadcasting – 1.3% | Broadcasting – 1.3% |
| Walt Disney Co., 3.5%, 5/13/2040 | $&nbsp;&nbsp;25879000 | &nbsp;&nbsp;$20968535 |
| Walt Disney Co., 4.75%, 9/15/2044 | &nbsp;&nbsp;&nbsp;&nbsp;2217000 | &nbsp;&nbsp;&nbsp;&nbsp; **1979129** |
| Walt Disney Co., 3.6%, 1/13/2051 | &nbsp;&nbsp;&nbsp;&nbsp;9908000 | &nbsp;&nbsp;&nbsp;&nbsp; **7195956** |
| WarnerMedia Holdings, Inc., 4.279%, 3/15/2032 | &nbsp;&nbsp;10210000 | &nbsp;&nbsp;&nbsp;&nbsp; **8742624** |
| WMG Acquisition Corp., 3.75%, 12/01/2029 (n) | &nbsp;&nbsp;11650000 | &nbsp;&nbsp;&nbsp;&nbsp; **10771780** |

---

MFBFS-ANN

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Broadcasting – continued | Broadcasting – continued | Broadcasting – continued |
| WMG Acquisition Corp., 3.875%, 7/15/2030 (n) | $&nbsp;&nbsp;10874000 | &nbsp;&nbsp;$9999476 |
|  |  | &nbsp;&nbsp; **$59657500** |
| Brokerage & Asset Managers – 1.9% | Brokerage & Asset Managers – 1.9% | Brokerage & Asset Managers – 1.9% |
| Charles Schwab Corp., 5.643% to 5/19/2028, FLR (SOFR - 1 day + 2.210%) to 5/19/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;4453000 | &nbsp;&nbsp;$4618010 |
| Charles Schwab Corp., 6.136% to 8/24/2033, FLR (SOFR - 1 day + 2.01%) to 8/24/2034 | &nbsp;&nbsp;12497000 | &nbsp;&nbsp;&nbsp;&nbsp; **13278603** |
| Jane Street Group/JSG Finance, Inc., 6.125%, 11/01/2032 (n) | &nbsp;&nbsp;13979000 | &nbsp;&nbsp;&nbsp;&nbsp; **13739675** |
| LPL Holdings, Inc., 4.625%, 11/15/2027 (n) | &nbsp;&nbsp;12968000 | &nbsp;&nbsp;&nbsp;&nbsp; **12908044** |
| LPL Holdings, Inc., 6.75%, 11/17/2028 | &nbsp;&nbsp;&nbsp;&nbsp;3337000 | &nbsp;&nbsp;&nbsp;&nbsp; **3547219** |
| LPL Holdings, Inc., 4.375%, 5/15/2031 (n) | &nbsp;&nbsp;16854000 | &nbsp;&nbsp;&nbsp;&nbsp; **16058846** |
| LPL Holdings, Inc., 5.65%, 3/15/2035 | &nbsp;&nbsp;15643000 | &nbsp;&nbsp;&nbsp;&nbsp; **15468400** |
| LSEG US Financial Corp., 5.297%, 3/28/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6298000 | &nbsp;&nbsp;&nbsp;&nbsp; **6394705** |
|  |  | &nbsp;&nbsp; **$86013502** |
| Building – 1.0% | Building – 1.0% | Building – 1.0% |
| Ferguson Enterprises, Inc., 5%, 10/03/2034 | $&nbsp;&nbsp;14236000 | &nbsp;&nbsp;$13776761 |
| Holcim Finance US LLC, 4.95%, 4/07/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6212000 | &nbsp;&nbsp;&nbsp;&nbsp; **6276485** |
| Holcim Finance US LLC, 5.4%, 4/07/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4442000 | &nbsp;&nbsp;&nbsp;&nbsp; **4439773** |
| Vulcan Materials Co., 3.5%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;4932000 | &nbsp;&nbsp;&nbsp;&nbsp; **4674183** |
| Vulcan Materials Co., 4.5%, 6/15/2047 | &nbsp;&nbsp;10514000 | &nbsp;&nbsp;&nbsp;&nbsp; **8740093** |
| Vulcan Materials Co., 5.7%, 12/01/2054 | &nbsp;&nbsp;&nbsp;&nbsp;7935000 | &nbsp;&nbsp;&nbsp;&nbsp; **7583269** |
|  |  | &nbsp;&nbsp; **$45490564** |
| Business Services – 1.9% | Business Services – 1.9% | Business Services – 1.9% |
| Accenture Capital, Inc., 4.25%, 10/04/2031 | $&nbsp;&nbsp;&nbsp;&nbsp;9441000 | &nbsp;&nbsp;$9340022 |
| Accenture Capital, Inc., 4.5%, 10/04/2034 | &nbsp;&nbsp;&nbsp;&nbsp;6291000 | &nbsp;&nbsp;&nbsp;&nbsp; **6063465** |
| Fiserv, Inc., 2.25%, 6/01/2027 | &nbsp;&nbsp;11840000 | &nbsp;&nbsp;&nbsp;&nbsp; **11330805** |
| Fiserv, Inc., 4.4%, 7/01/2049 | &nbsp;&nbsp;13643000 | &nbsp;&nbsp;&nbsp;&nbsp; **10713877** |
| Mastercard, Inc., 4.35%, 1/15/2032 | &nbsp;&nbsp;15972000 | &nbsp;&nbsp;&nbsp;&nbsp; **15808614** |
| Mastercard, Inc., 4.55%, 1/15/2035 | &nbsp;&nbsp;11064000 | &nbsp;&nbsp;&nbsp;&nbsp; **10807413** |
| Paychex, Inc., 5.1%, 4/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;5597000 | &nbsp;&nbsp;&nbsp;&nbsp; **5680729** |
| Paychex, Inc., 5.35%, 4/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;9179000 | &nbsp;&nbsp;&nbsp;&nbsp; **9323824** |
| Visa, Inc., 3.65%, 9/15/2047 | &nbsp;&nbsp;&nbsp;&nbsp;9718000 | &nbsp;&nbsp;&nbsp;&nbsp; **7435928** |
|  |  | &nbsp;&nbsp; **$86504677** |
| Cable TV – 1.7% | Cable TV – 1.7% | Cable TV – 1.7% |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 6.1%, 6/01/2029 | $&nbsp;&nbsp;23716000 | &nbsp;&nbsp;$24559854 |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 5.375%, 5/01/2047 | &nbsp;&nbsp;14026000 | &nbsp;&nbsp;&nbsp;&nbsp; **11379770** |
| Comcast Corp., 2.887%, 11/01/2051 | &nbsp;&nbsp;13896000 | &nbsp;&nbsp;&nbsp;&nbsp; **8358535** |
| Videotron Ltd., 3.625%, 6/15/2029 (n) | &nbsp;&nbsp;19934000 | &nbsp;&nbsp;&nbsp;&nbsp; **18863355** |
| Videotron Ltd., 5.7%, 1/15/2035 (n) | &nbsp;&nbsp;12004000 | &nbsp;&nbsp;&nbsp;&nbsp; **11941963** |
|  |  | &nbsp;&nbsp; **$75103477** |
| Chemicals – 0.4% | Chemicals – 0.4% | Chemicals – 0.4% |
| SCIH Salt Holdings, Inc., 4.875%, 5/01/2028 (n) | $&nbsp;&nbsp;18888000 | &nbsp;&nbsp;$18094725 |
| Computer Software – 0.7% | Computer Software – 0.7% | Computer Software – 0.7% |
| Cisco Systems, Inc., 5.5%, 1/15/2040 | $&nbsp;&nbsp;&nbsp;&nbsp;7722000 | &nbsp;&nbsp;$7889763 |
| Microsoft Corp., 2.525%, 6/01/2050 | &nbsp;&nbsp;&nbsp;&nbsp;5450000 | &nbsp;&nbsp;&nbsp;&nbsp; **3376269** |
| Microsoft Corp., 2.5%, 9/15/2050 | &nbsp;&nbsp;14610000 | &nbsp;&nbsp;&nbsp;&nbsp; **8929597** |
| Oracle Corp., 5.55%, 2/06/2053 | &nbsp;&nbsp;12451000 | &nbsp;&nbsp;&nbsp;&nbsp; **11403733** |
|  |  | &nbsp;&nbsp; **$31599362** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Computer Software - Systems – 0.1% | Computer Software - Systems – 0.1% | Computer Software - Systems – 0.1% |
| Apple, Inc., 2.7%, 8/05/2051 | $&nbsp;&nbsp;&nbsp;&nbsp;6683000 | &nbsp;&nbsp;$4147033 |
| Conglomerates – 1.5% | Conglomerates – 1.5% | Conglomerates – 1.5% |
| nVent Finance S.à r.l., 5.65%, 5/15/2033 | $&nbsp;&nbsp;&nbsp;&nbsp;5067000 | &nbsp;&nbsp;$5018404 |
| Regal Rexnord Corp., 6.05%, 4/15/2028 | &nbsp;&nbsp;10547000 | &nbsp;&nbsp;&nbsp;&nbsp; **10818738** |
| Regal Rexnord Corp., 6.3%, 2/15/2030 | &nbsp;&nbsp;14860000 | &nbsp;&nbsp;&nbsp;&nbsp; **15347760** |
| Regal Rexnord Corp., 6.4%, 4/15/2033 | &nbsp;&nbsp;11138000 | &nbsp;&nbsp;&nbsp;&nbsp; **11349663** |
| Westinghouse Air Brake Technologies Corp., 3.2%, 6/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;5611000 | &nbsp;&nbsp;&nbsp;&nbsp; **5598215** |
| Westinghouse Air Brake Technologies Corp., 4.7%, 9/15/2028 | &nbsp;&nbsp;10836000 | &nbsp;&nbsp;&nbsp;&nbsp; **10869073** |
| Westinghouse Air Brake Technologies Corp., 5.611%, 3/11/2034 | &nbsp;&nbsp;&nbsp;&nbsp;8326000 | &nbsp;&nbsp;&nbsp;&nbsp; **8552537** |
|  |  | &nbsp;&nbsp; **$67554390** |
| Consumer Products – 1.4% | Consumer Products – 1.4% | Consumer Products – 1.4% |
| Haleon US Capital LLC, 3.625%, 3/24/2032 | $&nbsp;&nbsp;11835000 | &nbsp;&nbsp;$10983299 |
| HFC Prestige Products, Inc./HFC Prestige International US LLC, 4.75%, 1/15/2029 (n) | &nbsp;&nbsp;13979000 | &nbsp;&nbsp;&nbsp;&nbsp; **13447091** |
| HFC Prestige Products, Inc./HFC Prestige International US LLC, 6.625%, 7/15/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5144000 | &nbsp;&nbsp;&nbsp;&nbsp; **5156520** |
| Kenvue, Inc., 5.1%, 3/22/2043 | &nbsp;&nbsp;10021000 | &nbsp;&nbsp;&nbsp;&nbsp; **9568760** |
| Kenvue, Inc., 5.05%, 3/22/2053 | &nbsp;&nbsp;&nbsp;&nbsp;9133000 | &nbsp;&nbsp;&nbsp;&nbsp; **8478058** |
| Mattel, Inc., 3.75%, 4/01/2029 (n) | &nbsp;&nbsp;15859000 | &nbsp;&nbsp;&nbsp;&nbsp; **14934184** |
|  |  | &nbsp;&nbsp; **$62567912** |
| Consumer Services – 0.5% | Consumer Services – 0.5% | Consumer Services – 0.5% |
| CBRE Group, Inc., 5.95%, 8/15/2034 | $&nbsp;&nbsp;17676000 | &nbsp;&nbsp;$18258815 |
| Service Corp. International, 5.75%, 10/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;6087000 | &nbsp;&nbsp;&nbsp;&nbsp; **6009329** |
|  |  | &nbsp;&nbsp; **$24268144** |
| Electrical Equipment – 0.4% | Electrical Equipment – 0.4% | Electrical Equipment – 0.4% |
| Arrow Electronics, Inc., 5.875%, 4/10/2034 | $&nbsp;&nbsp;17464000 | &nbsp;&nbsp;$17556856 |
| Electronics – 0.9% | Electronics – 0.9% | Electronics – 0.9% |
| Broadcom, Inc., 5.05%, 7/12/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;8807000 | &nbsp;&nbsp;$8979424 |
| Intel Corp., 5.7%, 2/10/2053 | &nbsp;&nbsp;12034000 | &nbsp;&nbsp;&nbsp;&nbsp; **10718822** |
| Lam Research Corp., 4.875%, 3/15/2049 | &nbsp;&nbsp;&nbsp;&nbsp;7791000 | &nbsp;&nbsp;&nbsp;&nbsp; **6979918** |
| NXP B.V./NXP Funding LLC/NXP USA, Inc., 5%, 1/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;3324000 | &nbsp;&nbsp;&nbsp;&nbsp; **3214834** |
| NXP B.V./NXP Funding LLC/NXP USA, Inc., 3.125%, 2/15/2042 | &nbsp;&nbsp;12491000 | &nbsp;&nbsp;&nbsp;&nbsp; **8618398** |
|  |  | &nbsp;&nbsp; **$38511396** |
| Emerging Market Quasi-Sovereign – 0.2% | Emerging Market Quasi-Sovereign – 0.2% | Emerging Market Quasi-Sovereign – 0.2% |
| GACI First Investment Co. (Kingdom of Saudi Arabia), 5.125%, 2/14/2053 | $&nbsp;&nbsp;&nbsp;&nbsp;8025000 | &nbsp;&nbsp;$6745085 |
| Emerging Market Sovereign – 0.4% | Emerging Market Sovereign – 0.4% | Emerging Market Sovereign – 0.4% |
| Kingdom of Saudi Arabia, 5.125%, 1/13/2028 (n) | $&nbsp;&nbsp;13484000 | &nbsp;&nbsp;$13692274 |
| United Mexican States, 6.338%, 5/04/2053 | &nbsp;&nbsp;&nbsp;&nbsp;4838000 | &nbsp;&nbsp;&nbsp;&nbsp; **4244513** |
|  |  | &nbsp;&nbsp; **$17936787** |
| Energy - Independent – 1.9% | Energy - Independent – 1.9% | Energy - Independent – 1.9% |
| Diamondback Energy, Inc., 5.75%, 4/18/2054 | $&nbsp;&nbsp;11900000 | &nbsp;&nbsp;$10633272 |
| EQT Corp., 4.5%, 1/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8793000 | &nbsp;&nbsp;&nbsp;&nbsp; **8529168** |
| Occidental Petroleum Corp., 6.125%, 1/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;7894000 | &nbsp;&nbsp;&nbsp;&nbsp; **7969577** |
| Occidental Petroleum Corp., 4.4%, 4/15/2046 | &nbsp;&nbsp;18060000 | &nbsp;&nbsp;&nbsp;&nbsp; **12821733** |
| Permian Resources Operating LLC, 7%, 1/15/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5042000 | &nbsp;&nbsp;&nbsp;&nbsp; **5075731** |
| Pioneer Natural Resources Co., 1.9%, 8/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;2906000 | &nbsp;&nbsp;&nbsp;&nbsp; **2551606** |
| Pioneer Natural Resources Co., 2.15%, 1/15/2031 | &nbsp;&nbsp;21285000 | &nbsp;&nbsp;&nbsp;&nbsp; **18677390** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Energy - Independent – continued | Energy - Independent – continued | Energy - Independent – continued |
| Santos Finance Ltd., 6.875%, 9/19/2033 (n) | $&nbsp;&nbsp;18737000 | &nbsp;&nbsp;$19745856 |
|  |  | &nbsp;&nbsp; **$86004333** |
| Energy - Integrated – 0.3% | Energy - Integrated – 0.3% | Energy - Integrated – 0.3% |
| BP Capital Markets America, Inc., 1.749%, 8/10/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;828000 | &nbsp;&nbsp;$718276 |
| BP Capital Markets America, Inc., 4.812%, 2/13/2033 | &nbsp;&nbsp;&nbsp;&nbsp;4600000 | &nbsp;&nbsp;&nbsp;&nbsp; **4514696** |
| BP Capital Markets America, Inc., 3.001%, 3/17/2052 | &nbsp;&nbsp;10654000 | &nbsp;&nbsp;&nbsp;&nbsp; **6518160** |
|  |  | &nbsp;&nbsp; **$11751132** |
| Entertainment – 0.9% | Entertainment – 0.9% | Entertainment – 0.9% |
| Royal Caribbean Cruises Ltd., 4.25%, 7/01/2026 (n) | $&nbsp;&nbsp;18053000 | &nbsp;&nbsp;$17806093 |
| Royal Caribbean Cruises Ltd., 5.625%, 9/30/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6700000 | &nbsp;&nbsp;&nbsp;&nbsp; **6648504** |
| Royal Caribbean Cruises Ltd., 6%, 2/01/2033 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5052000 | &nbsp;&nbsp;&nbsp;&nbsp; **5065907** |
| Six Flags Entertainment Corp., 6.625%, 5/01/2032 (n) | &nbsp;&nbsp;12829000 | &nbsp;&nbsp;&nbsp;&nbsp; **12944076** |
|  |  | &nbsp;&nbsp; **$42464580** |
| Financial Institutions – 1.7% | Financial Institutions – 1.7% | Financial Institutions – 1.7% |
| Avolon Holdings Funding Ltd., 4.375%, 5/01/2026 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;4843000 | &nbsp;&nbsp;$4806372 |
| Avolon Holdings Funding Ltd., 3.25%, 2/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9024000 | &nbsp;&nbsp;&nbsp;&nbsp; **8736302** |
| Avolon Holdings Funding Ltd., 2.75%, 2/21/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5143000 | &nbsp;&nbsp;&nbsp;&nbsp; **4820618** |
| Fortress Transportation and Infrastructure Investors LLC, 7%, 5/01/2031 (n) | &nbsp;&nbsp;10320000 | &nbsp;&nbsp;&nbsp;&nbsp; **10493190** |
| Macquarie AirFinance Holdings Ltd., 8.125%, 3/30/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5642000 | &nbsp;&nbsp;&nbsp;&nbsp; **5900471** |
| Macquarie AirFinance Holdings Ltd., 5.15%, 3/17/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4283000 | &nbsp;&nbsp;&nbsp;&nbsp; **4203061** |
| Macquarie AirFinance Holdings Ltd., 6.5%, 3/26/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7609000 | &nbsp;&nbsp;&nbsp;&nbsp; **7815949** |
| SLM Corp., 6.5%, 1/31/2030 | &nbsp;&nbsp;&nbsp;&nbsp;8625000 | &nbsp;&nbsp;&nbsp;&nbsp; **8903458** |
| SMBC Aviation Capital Finance DAC, 5.3%, 4/03/2029 (n) | &nbsp;&nbsp;23119000 | &nbsp;&nbsp;&nbsp;&nbsp; **23408981** |
|  |  | &nbsp;&nbsp; **$79088402** |
| Food & Beverages – 5.2% | Food & Beverages – 5.2% | Food & Beverages – 5.2% |
| Anheuser-Busch InBev Worldwide, Inc., 4.375%, 4/15/2038 | $&nbsp;&nbsp;&nbsp;&nbsp;4622000 | &nbsp;&nbsp;$4224171 |
| Anheuser-Busch InBev Worldwide, Inc., 4.439%, 10/06/2048 | &nbsp;&nbsp;17135000 | &nbsp;&nbsp;&nbsp;&nbsp; **14416999** |
| Bacardi-Martini B.V., 5.4%, 6/15/2033 (n) | &nbsp;&nbsp;21513000 | &nbsp;&nbsp;&nbsp;&nbsp; **20892080** |
| Bunge Ltd. Finance Corp., 4.65%, 9/17/2034 | &nbsp;&nbsp;15496000 | &nbsp;&nbsp;&nbsp;&nbsp; **15030188** |
| Constellation Brands, Inc., 4.1%, 2/15/2048 | &nbsp;&nbsp;12844000 | &nbsp;&nbsp;&nbsp;&nbsp; **9759848** |
| Constellation Brands, Inc., 3.75%, 5/01/2050 | &nbsp;&nbsp;&nbsp;&nbsp;5973000 | &nbsp;&nbsp;&nbsp;&nbsp; **4229692** |
| Diageo Capital PLC, 5.625%, 10/05/2033 | &nbsp;&nbsp;&nbsp;&nbsp;6595000 | &nbsp;&nbsp;&nbsp;&nbsp; **6852087** |
| Flowers Foods, Inc., 5.75%, 3/15/2035 | &nbsp;&nbsp;15526000 | &nbsp;&nbsp;&nbsp;&nbsp; **15664913** |
| Flowers Foods, Inc., 6.2%, 3/15/2055 | &nbsp;&nbsp;&nbsp;&nbsp;8950000 | &nbsp;&nbsp;&nbsp;&nbsp; **8908666** |
| JBS USA Lux S.A./JBS USA Food Co./JBS USA Finance, Inc., 5.5%, 1/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;1368000 | &nbsp;&nbsp;&nbsp;&nbsp; **1389045** |
| JBS USA Lux S.A./JBS USA Food Co./JBS USA Finance, Inc., 3.75%, 12/01/2031 | &nbsp;&nbsp;12802000 | &nbsp;&nbsp;&nbsp;&nbsp; **11698607** |
| JBS USA Lux S.A./JBS USA Food Co./JBS USA Finance, Inc., 3.625%, 1/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;8055000 | &nbsp;&nbsp;&nbsp;&nbsp; **7287722** |
| JBS USA Lux S.A./JBS USA Food Co./JBS USA Finance, Inc., 6.5%, 12/01/2052 | &nbsp;&nbsp;11976000 | &nbsp;&nbsp;&nbsp;&nbsp; **12329484** |
| Kraft Heinz Foods Co., 4.875%, 10/01/2049 | &nbsp;&nbsp;12944000 | &nbsp;&nbsp;&nbsp;&nbsp; **11066428** |
| Kraft Heinz Foods Co., 5.5%, 6/01/2050 | &nbsp;&nbsp;12522000 | &nbsp;&nbsp;&nbsp;&nbsp; **11733286** |
| Mars, Inc., 4.55%, 4/20/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9306000 | &nbsp;&nbsp;&nbsp;&nbsp; **9398625** |
| Mars, Inc., 5%, 3/01/2032 (n) | &nbsp;&nbsp;19768000 | &nbsp;&nbsp;&nbsp;&nbsp; **19926411** |
| Mars, Inc., 5.2%, 3/01/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3438000 | &nbsp;&nbsp;&nbsp;&nbsp; **3451490** |
| Mars, Inc., 3.95%, 4/01/2049 (n) | &nbsp;&nbsp;10409000 | &nbsp;&nbsp;&nbsp;&nbsp; **8063177** |
| Mars, Inc., 5.7%, 5/01/2055 (n) | &nbsp;&nbsp;13975000 | &nbsp;&nbsp;&nbsp;&nbsp; **13774629** |
| SYSCO Corp., 4.45%, 3/15/2048 | &nbsp;&nbsp;&nbsp;&nbsp;9063000 | &nbsp;&nbsp;&nbsp;&nbsp; **7322228** |
| U.S. Foods Holding Corp., 5.75%, 4/15/2033 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9882000 | &nbsp;&nbsp;&nbsp;&nbsp; **9679496** |
| Viterra Finance B.V., 3.2%, 4/21/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5281000 | &nbsp;&nbsp;&nbsp;&nbsp; **4789993** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Food & Beverages – continued | Food & Beverages – continued | Food & Beverages – continued |
| Viterra Finance B.V., 5.25%, 4/21/2032 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;3134000 | &nbsp;&nbsp;$3154935 |
|  |  | &nbsp;&nbsp; **$235044200** |
| Gaming & Lodging – 1.9% | Gaming & Lodging – 1.9% | Gaming & Lodging – 1.9% |
| Flutter Treasury DAC, 6.375%, 4/29/2029 (n) | $&nbsp;&nbsp;14904000 | &nbsp;&nbsp;$15228445 |
| Hilton Domestic Operating Co., Inc., 5.875%, 3/15/2033 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7743000 | &nbsp;&nbsp;&nbsp;&nbsp; **7739022** |
| Las Vegas Sands Corp., 5.9%, 6/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;7130000 | &nbsp;&nbsp;&nbsp;&nbsp; **7221962** |
| Las Vegas Sands Corp., 6.2%, 8/15/2034 | &nbsp;&nbsp;11021000 | &nbsp;&nbsp;&nbsp;&nbsp; **10799282** |
| Marriott International, Inc., 2.85%, 4/15/2031 | &nbsp;&nbsp;12565000 | &nbsp;&nbsp;&nbsp;&nbsp; **11233721** |
| Melco Resorts Finance Ltd., 7.625%, 4/17/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5546000 | &nbsp;&nbsp;&nbsp;&nbsp; **5350593** |
| Sands China Ltd., 2.85%, 3/08/2029 | &nbsp;&nbsp;15270000 | &nbsp;&nbsp;&nbsp;&nbsp; **13685650** |
| VICI Properties LP/VICI Note Co., Inc., 4.25%, 12/01/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7044000 | &nbsp;&nbsp;&nbsp;&nbsp; **6970706** |
| Wynn Macau Ltd., 5.5%, 10/01/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8594000 | &nbsp;&nbsp;&nbsp;&nbsp; **8375718** |
|  |  | &nbsp;&nbsp; **$86605099** |
| Industrial – 0.3% | Industrial – 0.3% | Industrial – 0.3% |
| Booz Allen Hamilton, Inc., 5.95%, 4/15/2035 | $&nbsp;&nbsp;15101000 | &nbsp;&nbsp;$15005160 |
| Insurance – 1.7% | Insurance – 1.7% | Insurance – 1.7% |
| Corebridge Financial, Inc., 3.9%, 4/05/2032 | $&nbsp;&nbsp;22135000 | &nbsp;&nbsp;$20379931 |
| Corebridge Financial, Inc., 4.35%, 4/05/2042 | &nbsp;&nbsp;&nbsp;&nbsp;2707000 | &nbsp;&nbsp;&nbsp;&nbsp; **2208871** |
| Corebridge Financial, Inc., 6.875% to 12/15/2027, FLR (CMT - 5yr. + 3.846%) to 12/15/2052 | &nbsp;&nbsp;&nbsp;&nbsp;8970000 | &nbsp;&nbsp;&nbsp;&nbsp; **9069495** |
| Lincoln National Corp., 5.852%, 3/15/2034 | &nbsp;&nbsp;13260000 | &nbsp;&nbsp;&nbsp;&nbsp; **13493631** |
| MetLife, Inc., 5.3%, 12/15/2034 | &nbsp;&nbsp;15082000 | &nbsp;&nbsp;&nbsp;&nbsp; **15321395** |
| Sammons Financial Group, Inc., 6.875%, 4/15/2034 (n) | &nbsp;&nbsp;17496000 | &nbsp;&nbsp;&nbsp;&nbsp; **18273984** |
|  |  | &nbsp;&nbsp; **$78747307** |
| Insurance - Health – 1.8% | Insurance - Health – 1.8% | Insurance - Health – 1.8% |
| Elevance Health, Inc., 5.375%, 6/15/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;4560000 | &nbsp;&nbsp;$4618087 |
| Elevance Health, Inc., 5.65%, 6/15/2054 | &nbsp;&nbsp;15203000 | &nbsp;&nbsp;&nbsp;&nbsp; **14503177** |
| Humana, Inc., 5.55%, 5/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;9053000 | &nbsp;&nbsp;&nbsp;&nbsp; **8982896** |
| Humana, Inc., 4.95%, 10/01/2044 | &nbsp;&nbsp;&nbsp;&nbsp;7759000 | &nbsp;&nbsp;&nbsp;&nbsp; **6604261** |
| UnitedHealth Group, Inc., 5.3%, 2/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;8423000 | &nbsp;&nbsp;&nbsp;&nbsp; **8743647** |
| UnitedHealth Group, Inc., 4.625%, 7/15/2035 | &nbsp;&nbsp;&nbsp;&nbsp;4745000 | &nbsp;&nbsp;&nbsp;&nbsp; **4574869** |
| UnitedHealth Group, Inc., 5.5%, 7/15/2044 | &nbsp;&nbsp;11960000 | &nbsp;&nbsp;&nbsp;&nbsp; **11602114** |
| UnitedHealth Group, Inc., 5.875%, 2/15/2053 | &nbsp;&nbsp;19945000 | &nbsp;&nbsp;&nbsp;&nbsp; **19841465** |
|  |  | &nbsp;&nbsp; **$79470516** |
| Insurance - Property & Casualty – 2.6% | Insurance - Property & Casualty – 2.6% | Insurance - Property & Casualty – 2.6% |
| Alliant Holdings Intermediate LLC/Alliant Holdings Co-Issuer, 6.75%, 4/15/2028 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;7004000 | &nbsp;&nbsp;$7054429 |
| American International Group, Inc., 5.125%, 3/27/2033 | &nbsp;&nbsp;16737000 | &nbsp;&nbsp;&nbsp;&nbsp; **16720245** |
| Arthur J. Gallagher & Co., 6.5%, 2/15/2034 | &nbsp;&nbsp;14386000 | &nbsp;&nbsp;&nbsp;&nbsp; **15602428** |
| Arthur J. Gallagher & Co., 6.75%, 2/15/2054 | &nbsp;&nbsp;11784000 | &nbsp;&nbsp;&nbsp;&nbsp; **12804787** |
| Brown & Brown, Inc., 5.65%, 6/11/2034 | &nbsp;&nbsp;&nbsp;&nbsp;2840000 | &nbsp;&nbsp;&nbsp;&nbsp; **2872024** |
| Fairfax Financial Holdings Ltd., 3.375%, 3/03/2031 | &nbsp;&nbsp;11222000 | &nbsp;&nbsp;&nbsp;&nbsp; **10216406** |
| Fairfax Financial Holdings Ltd., 5.625%, 8/16/2032 | &nbsp;&nbsp;&nbsp;&nbsp;4771000 | &nbsp;&nbsp;&nbsp;&nbsp; **4848594** |
| Fairfax Financial Holdings Ltd., 6.35%, 3/22/2054 | &nbsp;&nbsp;11191000 | &nbsp;&nbsp;&nbsp;&nbsp; **11212681** |
| Marsh & McLennan Cos., Inc., 4.85%, 11/15/2031 | &nbsp;&nbsp;21665000 | &nbsp;&nbsp;&nbsp;&nbsp; **21903375** |
| Marsh & McLennan Cos., Inc., 5.4%, 3/15/2055 | &nbsp;&nbsp;12177000 | &nbsp;&nbsp;&nbsp;&nbsp; **11591371** |
| Panther Escrow Issuer, 7.125%, 6/01/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4401000 | &nbsp;&nbsp;&nbsp;&nbsp; **4508802** |
|  |  | &nbsp;&nbsp; **$119335142** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| International Market Quasi-Sovereign – 0.7% | International Market Quasi-Sovereign – 0.7% | International Market Quasi-Sovereign – 0.7% |
| NBN Co. Ltd. (Commonwealth of Australia), 5.75%, 10/06/2028 (n) | $&nbsp;&nbsp;16054000 | &nbsp;&nbsp;$16760772 |
| Ontario Teachers' Cadillac Fairview Properties, 2.5%, 10/15/2031 (n) | &nbsp;&nbsp;16065000 | &nbsp;&nbsp;&nbsp;&nbsp; **14005315** |
|  |  | &nbsp;&nbsp; **$30766087** |
| International Market Sovereign – 0.6% | International Market Sovereign – 0.6% | International Market Sovereign – 0.6% |
| Government of Bermuda, 5%, 7/15/2032 (n) | $&nbsp;&nbsp;25609000 | &nbsp;&nbsp;$25178448 |
| Machinery & Tools – 1.3% | Machinery & Tools – 1.3% | Machinery & Tools – 1.3% |
| AGCO Corp., 5.8%, 3/21/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;7879000 | &nbsp;&nbsp;$7826434 |
| Ashtead Capital, Inc., 4.375%, 8/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3228000 | &nbsp;&nbsp;&nbsp;&nbsp; **3202132** |
| Ashtead Capital, Inc., 5.55%, 5/30/2033 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9885000 | &nbsp;&nbsp;&nbsp;&nbsp; **9778700** |
| Ashtead Capital, Inc., 5.95%, 10/15/2033 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3902000 | &nbsp;&nbsp;&nbsp;&nbsp; **3947116** |
| CNH Industrial Capital LLC, 5.45%, 10/14/2025 | &nbsp;&nbsp;17462000 | &nbsp;&nbsp;&nbsp;&nbsp; **17531163** |
| CNH Industrial Capital LLC, 5.5%, 1/12/2029 | &nbsp;&nbsp;10984000 | &nbsp;&nbsp;&nbsp;&nbsp; **11288694** |
| CNH Industrial N.V., 3.85%, 11/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;5323000 | &nbsp;&nbsp;&nbsp;&nbsp; **5227961** |
|  |  | &nbsp;&nbsp; **$58802200** |
| Major Banks – 16.1% | Major Banks – 16.1% | Major Banks – 16.1% |
| Bank of America Corp., 4.376% to 4/27/2027, FLR (SOFR - 1 day + 1.58%) to 4/27/2028 | $&nbsp;&nbsp;25565000 | &nbsp;&nbsp;$25522822 |
| Bank of America Corp., 5.819% to 9/15/2028, FLR (SOFR - 1 day + 1.57%) to 9/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;9904000 | &nbsp;&nbsp;&nbsp;&nbsp; **10315880** |
| Bank of America Corp., 2.687% to 4/22/2031, FLR (SOFR - 1 day + 1.32%) to 4/22/2032 | &nbsp;&nbsp;&nbsp;&nbsp;8035000 | &nbsp;&nbsp;&nbsp;&nbsp; **7106737** |
| Bank of America Corp., 5.872% to 9/15/2033, FLR (SOFR - 1 day + 1.84%) to 9/15/2034 | &nbsp;&nbsp;&nbsp;&nbsp;8451000 | &nbsp;&nbsp;&nbsp;&nbsp; **8805247** |
| Bank of America Corp., 5.425% to 8/15/2034, FLR (SOFR - 1 day + 1.913%) to 8/15/2035 | &nbsp;&nbsp;&nbsp;&nbsp;9737000 | &nbsp;&nbsp;&nbsp;&nbsp; **9530211** |
| Barclays PLC, 2.894% to 11/24/2031, FLR (CMT - 1yr. + 1.3%) to 11/24/2032 | &nbsp;&nbsp;13347000 | &nbsp;&nbsp;&nbsp;&nbsp; **11609063** |
| BNP Paribas S.A., 5.283% to 11/19/2029, FLR (SOFR - 1 day + 1.28%) to 11/19/2030 (n) | &nbsp;&nbsp;10468000 | &nbsp;&nbsp;&nbsp;&nbsp; **10585834** |
| Comerica, Inc., 5.982% to 1/30/2029, FLR (SOFR - 1 day + 2.155%) to 1/30/2030 | &nbsp;&nbsp;14075000 | &nbsp;&nbsp;&nbsp;&nbsp; **14247874** |
| Commonwealth Bank of Australia, 3.61% to 9/12/2029, FLR (CMT - 1yr. + 2.05%) to 9/12/2034 (n) | &nbsp;&nbsp;12534000 | &nbsp;&nbsp;&nbsp;&nbsp; **11757525** |
| Commonwealth Bank of Australia, 3.305%, 3/11/2041 (n) | &nbsp;&nbsp;18459000 | &nbsp;&nbsp;&nbsp;&nbsp; **13470503** |
| Credit Agricole S.A., 1.247% to 1/26/2026, FLR (SOFR - 1 day + 0.89162%) to 1/26/2027 (n) | &nbsp;&nbsp;24068000 | &nbsp;&nbsp;&nbsp;&nbsp; **23442407** |
| Danske Bank A.S., 5.705% to 3/01/2029, FLR (CMT - 1yr. + 1.4%) to 3/01/2030 (n) | &nbsp;&nbsp;16262000 | &nbsp;&nbsp;&nbsp;&nbsp; **16773540** |
| Danske Bank A.S., 4.613% to 10/02/2029, FLR (CMT - 1yr. + 1.1%) to 10/02/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6859000 | &nbsp;&nbsp;&nbsp;&nbsp; **6792166** |
| Deutsche Bank AG, 5.706% to 2/08/2027, FLR (SOFR - 1 day + 1.594%) to 2/08/2028 | &nbsp;&nbsp;11827000 | &nbsp;&nbsp;&nbsp;&nbsp; **12009811** |
| Deutsche Bank AG, 5.373% to 1/10/2028, FLR (SOFR - 1 day + 1.21%) to 1/10/2029 | &nbsp;&nbsp;14717000 | &nbsp;&nbsp;&nbsp;&nbsp; **14914273** |
| Deutsche Bank AG, 7.079% to 2/10/2033, FLR (SOFR - 1 day + 3.65%) to 2/10/2034 | &nbsp;&nbsp;14155000 | &nbsp;&nbsp;&nbsp;&nbsp; **14785429** |
| Goldman Sachs Group, Inc., 4.692% to 10/23/2029, FLR (SOFR - 1 day + 1.135%) to 10/23/2030 | &nbsp;&nbsp;&nbsp;&nbsp;9426000 | &nbsp;&nbsp;&nbsp;&nbsp; **9402968** |
| Goldman Sachs Group, Inc., 5.016% to 10/23/2034, FLR (SOFR - 1 day + 1.42%) to 10/23/2035 | &nbsp;&nbsp;14169000 | &nbsp;&nbsp;&nbsp;&nbsp; **13729258** |
| HSBC Holdings PLC, 5.13% to 3/03/2030, FLR (SOFR - 1 day + 1.29%) to 3/03/2031 | &nbsp;&nbsp;11995000 | &nbsp;&nbsp;&nbsp;&nbsp; **12090648** |
| HSBC Holdings PLC, 2.357% to 8/18/2030, FLR (SOFR - 1 day + 1.947%) to 8/18/2031 | &nbsp;&nbsp;21465000 | &nbsp;&nbsp;&nbsp;&nbsp; **18847191** |
| HSBC Holdings PLC, 2.871% to 11/22/2031, FLR (SOFR - 1 day + 1.41%) to 11/22/2032 | &nbsp;&nbsp;&nbsp;&nbsp;8263000 | &nbsp;&nbsp;&nbsp;&nbsp; **7231131** |
| HSBC Holdings PLC, 5.45% to 3/03/2035, FLR (SOFR - 1 day + 1.56%) to 3/03/2036 | &nbsp;&nbsp;&nbsp;&nbsp;8020000 | &nbsp;&nbsp;&nbsp;&nbsp; **7969548** |
| JPMorgan Chase & Co., 6.07% to 10/22/2026, FLR (SOFR - 1 day + 1.33%) to 10/22/2027 | &nbsp;&nbsp;25493000 | &nbsp;&nbsp;&nbsp;&nbsp; **26132384** |
| JPMorgan Chase & Co., 4.323% to 4/26/2027, FLR (SOFR - 1 day + 1.56%) to 4/26/2028 | &nbsp;&nbsp;&nbsp;&nbsp;4363000 | &nbsp;&nbsp;&nbsp;&nbsp; **4357363** |
| JPMorgan Chase & Co., 3.54%, 5/01/2028 | &nbsp;&nbsp;13887000 | &nbsp;&nbsp;&nbsp;&nbsp; **13644109** |
| JPMorgan Chase & Co., 5.581% to 4/22/2029, FLR (SOFR - 1 day + 1.16%) to 4/22/2030 | &nbsp;&nbsp;&nbsp;&nbsp;9529000 | &nbsp;&nbsp;&nbsp;&nbsp; **9874482** |
| JPMorgan Chase & Co., 2.545% to 11/08/2031, FLR (SOFR - 1 day + 1.18%) to 11/08/2032 | &nbsp;&nbsp;37249000 | &nbsp;&nbsp;&nbsp;&nbsp; **32484128** |
| JPMorgan Chase & Co., 5.336% to 1/23/2034, FLR (SOFR - 1 day + 1.62%) to 1/23/2035 | &nbsp;&nbsp;&nbsp;&nbsp;5407000 | &nbsp;&nbsp;&nbsp;&nbsp; **5452387** |
| JPMorgan Chase & Co., 4.946% to 10/22/2034, FLR (SOFR - 1 day + 1.34%) to 10/22/2035 | &nbsp;&nbsp;&nbsp;&nbsp;6662000 | &nbsp;&nbsp;&nbsp;&nbsp; **6506647** |
| Mitsubishi UFJ Financial Group, Inc., 1.64% to 10/13/2026, FLR (CMT - 1yr. + 0.67%) to 10/13/2027 | &nbsp;&nbsp;14185000 | &nbsp;&nbsp;&nbsp;&nbsp; **13618905** |
| Mitsubishi UFJ Financial Group, Inc., 5.159%, 4/24/2031 | &nbsp;&nbsp;&nbsp;&nbsp;4901000 | &nbsp;&nbsp;&nbsp;&nbsp; **4990889** |
| Morgan Stanley, 0.985% to 12/10/2025, FLR (SOFR - 1 day + 0.72%) to 12/10/2026 | &nbsp;&nbsp;17246000 | &nbsp;&nbsp;&nbsp;&nbsp; **16858155** |
| Morgan Stanley, 5.449% to 7/20/2028, FLR (SOFR - 1 day + 1.63%) to 7/20/2029 | &nbsp;&nbsp;&nbsp;&nbsp;4781000 | &nbsp;&nbsp;&nbsp;&nbsp; **4908073** |
| Morgan Stanley, 4.431% to 1/23/2029, FLR ((SOFR - 3mo. + 0.26161%) + 1.628%) to 1/23/2030 | &nbsp;&nbsp;&nbsp;&nbsp;3224000 | &nbsp;&nbsp;&nbsp;&nbsp; **3199706** |
| Morgan Stanley, 3.622% to 4/01/2030, FLR (SOFR - 1 day + 3.12%) to 4/01/2031 | &nbsp;&nbsp;23279000 | &nbsp;&nbsp;&nbsp;&nbsp; **22090725** |
| Morgan Stanley, 5.424% to 7/21/2033, FLR (SOFR - 1 day + 1.88%) to 7/21/2034 | &nbsp;&nbsp;11137000 | &nbsp;&nbsp;&nbsp;&nbsp; **11254147** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Major Banks – continued | Major Banks – continued | Major Banks – continued |
| National Australia Bank Ltd., 3.347% to 1/12/2032, FLR (CMT - 5yr. + 1.7%) to 1/12/2037 (n) | $&nbsp;&nbsp;21704000 | &nbsp;&nbsp;$18909048 |
| NatWest Group PLC, 5.847% to 3/02/2026, FLR (CMT - 1yr. + 1.35%) to 3/02/2027 | &nbsp;&nbsp;10295000 | &nbsp;&nbsp;&nbsp;&nbsp; **10391228** |
| NatWest Group PLC, 5.583%, 3/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;8696000 | &nbsp;&nbsp;&nbsp;&nbsp; **8843313** |
| NatWest Group PLC, 8.125% to 5/10/2034, FLR (CMT - 5yr. + 3.752%) to 6/30/2172 | &nbsp;&nbsp;&nbsp;&nbsp;5914000 | &nbsp;&nbsp;&nbsp;&nbsp; **6107618** |
| Nordea Bank Abp, 1.5%, 9/30/2026 (n) | &nbsp;&nbsp;16788000 | &nbsp;&nbsp;&nbsp;&nbsp; **16144519** |
| PNC Financial Services Group, Inc., 5.3% to 1/21/2027, FLR (SOFR - 1 day + 1.342%) to 1/21/2028 | &nbsp;&nbsp;&nbsp;&nbsp;6731000 | &nbsp;&nbsp;&nbsp;&nbsp; **6828616** |
| PNC Financial Services Group, Inc., 5.676% to 1/22/2034, FLR (SOFR - 1 day + 1.902%) to 1/22/2035 | &nbsp;&nbsp;&nbsp;&nbsp;8687000 | &nbsp;&nbsp;&nbsp;&nbsp; **8854125** |
| PNC Financial Services Group, Inc., 5.575% to 1/29/2035, FLR (SOFR - 1 day + 1.394%) to 1/29/2036 | &nbsp;&nbsp;10145000 | &nbsp;&nbsp;&nbsp;&nbsp; **10268688** |
| Regions Financial Corp., 5.502%, 9/06/2035 | &nbsp;&nbsp;10303000 | &nbsp;&nbsp;&nbsp;&nbsp; **10089302** |
| Sumitomo Mitsui Financial Group, Inc., 1.71%, 1/12/2031 | &nbsp;&nbsp;28730000 | &nbsp;&nbsp;&nbsp;&nbsp; **24371773** |
| Sumitomo Mitsui Trust Bank Ltd., 5.65%, 3/09/2026 (n) | &nbsp;&nbsp;19569000 | &nbsp;&nbsp;&nbsp;&nbsp; **19783627** |
| Toronto-Dominion Bank, 4.108%, 6/08/2027 | &nbsp;&nbsp;12741000 | &nbsp;&nbsp;&nbsp;&nbsp; **12698592** |
| Toronto-Dominion Bank, 4.693%, 9/15/2027 | &nbsp;&nbsp;16991000 | &nbsp;&nbsp;&nbsp;&nbsp; **17144248** |
| UBS Group AG, 3.126% to 8/13/2029, FLR (LIBOR - 3mo. + 1.468%) to 8/13/2030 (n) | &nbsp;&nbsp;35561000 | &nbsp;&nbsp;&nbsp;&nbsp; **33264182** |
| UBS Group AG, 4.375% to 2/10/2031, FLR (CMT - 1yr. + 3.313%) to 8/10/2171 (n) | &nbsp;&nbsp;22649000 | &nbsp;&nbsp;&nbsp;&nbsp; **19395233** |
| UniCredit S.p.A., 2.569% to 9/22/2025, FLR (CMT - 1yr. + 2.3%) to 9/22/2026 (n) | &nbsp;&nbsp;18700000 | &nbsp;&nbsp;&nbsp;&nbsp; **18525873** |
| UniCredit S.p.A., 1.982% to 6/03/2026, FLR (CMT - 1yr. + 1.2%) to 6/03/2027 (n) | &nbsp;&nbsp;10140000 | &nbsp;&nbsp;&nbsp;&nbsp; **9824269** |
| Wells Fargo & Co., 5.574% to 7/25/2028, FLR (SOFR - 1 day + 1.74%) to 7/25/2029 | &nbsp;&nbsp;10754000 | &nbsp;&nbsp;&nbsp;&nbsp; **11063908** |
| Wells Fargo & Co., 5.244% to 1/24/2030, FLR (SOFR - 1 day + 1.11%) to 1/24/2031 | &nbsp;&nbsp;12007000 | &nbsp;&nbsp;&nbsp;&nbsp; **12255994** |
|  |  | &nbsp;&nbsp; **$731076322** |
| Medical & Health Technology & Services – 1.6% | Medical & Health Technology & Services – 1.6% | Medical & Health Technology & Services – 1.6% |
| Alcon Finance Corp., 2.6%, 5/27/2030 (n) | $&nbsp;&nbsp;12203000 | &nbsp;&nbsp;$10987006 |
| Alcon Finance Corp., 3.8%, 9/23/2049 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6904000 | &nbsp;&nbsp;&nbsp;&nbsp; **4967295** |
| Becton, Dickinson and Co., 4.685%, 12/15/2044 | &nbsp;&nbsp;&nbsp;&nbsp;6838000 | &nbsp;&nbsp;&nbsp;&nbsp; **5871984** |
| HCA, Inc., 5.45%, 9/15/2034 | &nbsp;&nbsp;17868000 | &nbsp;&nbsp;&nbsp;&nbsp; **17729475** |
| ICON Investments Six DAC, 5.809%, 5/08/2027 | &nbsp;&nbsp;17938000 | &nbsp;&nbsp;&nbsp;&nbsp; **18296016** |
| Marin General Hospital, 7.242%, 8/01/2045 | &nbsp;&nbsp;&nbsp;&nbsp;8685000 | &nbsp;&nbsp;&nbsp;&nbsp; **9822858** |
| Thermo Fisher Scientific, Inc., 2.8%, 10/15/2041 | &nbsp;&nbsp;&nbsp;&nbsp;7023000 | &nbsp;&nbsp;&nbsp;&nbsp; **4947390** |
|  |  | &nbsp;&nbsp; **$72622024** |
| Medical Equipment – 0.6% | Medical Equipment – 0.6% | Medical Equipment – 0.6% |
| Danaher Corp., 2.6%, 10/01/2050 | $&nbsp;&nbsp;16527000 | &nbsp;&nbsp;$9806280 |
| Stryker Corp., 4.625%, 9/11/2034 | &nbsp;&nbsp;15607000 | &nbsp;&nbsp;&nbsp;&nbsp; **15193362** |
|  |  | &nbsp;&nbsp; **$24999642** |
| Metals & Mining – 1.6% | Metals & Mining – 1.6% | Metals & Mining – 1.6% |
| Anglo American Capital PLC, 2.625%, 9/10/2030 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;4570000 | &nbsp;&nbsp;$4066581 |
| FMG Resources Ltd., 4.375%, 4/01/2031 (n) | &nbsp;&nbsp;17960000 | &nbsp;&nbsp;&nbsp;&nbsp; **16254368** |
| Glencore Funding LLC, 3.875%, 10/27/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8624000 | &nbsp;&nbsp;&nbsp;&nbsp; **8472415** |
| Novelis, Inc., 4.75%, 1/30/2030 (n) | &nbsp;&nbsp;19774000 | &nbsp;&nbsp;&nbsp;&nbsp; **18387570** |
| Rio Tinto Finance (USA) PLC, 4.875%, 3/14/2030 | &nbsp;&nbsp;11216000 | &nbsp;&nbsp;&nbsp;&nbsp; **11386083** |
| Rio Tinto Finance (USA) PLC, 5%, 3/14/2032 | &nbsp;&nbsp;&nbsp;&nbsp;7260000 | &nbsp;&nbsp;&nbsp;&nbsp; **7308979** |
| Vale Overseas Ltd., 6.4%, 6/28/2054 | &nbsp;&nbsp;&nbsp;&nbsp;6666000 | &nbsp;&nbsp;&nbsp;&nbsp; **6438270** |
|  |  | &nbsp;&nbsp; **$72314266** |
| Midstream – 4.4% | Midstream – 4.4% | Midstream – 4.4% |
| Columbia Pipelines Holdings Co. LLC, 6.055%, 8/15/2026 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;3370000 | &nbsp;&nbsp;$3417490 |
| Columbia Pipelines Operating Co. LLC, 6.497%, 8/15/2043 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8216000 | &nbsp;&nbsp;&nbsp;&nbsp; **8440546** |
| Columbia Pipelines Operating Co. LLC, 6.544%, 11/15/2053 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8633000 | &nbsp;&nbsp;&nbsp;&nbsp; **8792688** |
| Eastern Energy Gas Holdings LLC, 5.65%, 10/15/2054 | &nbsp;&nbsp;18259000 | &nbsp;&nbsp;&nbsp;&nbsp; **17179272** |
| Enbridge, Inc., 5.95%, 4/05/2054 | &nbsp;&nbsp;&nbsp;&nbsp;9370000 | &nbsp;&nbsp;&nbsp;&nbsp; **8999633** |
| Energy Transfer LP, 4%, 10/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8335000 | &nbsp;&nbsp;&nbsp;&nbsp; **8229455** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Midstream – continued | Midstream – continued | Midstream – continued |
| Energy Transfer LP, 5.95%, 5/15/2054 | $&nbsp;&nbsp;&nbsp;&nbsp;7124000 | &nbsp;&nbsp;$6476484 |
| Energy Transfer LP, 7.125% to 5/15/2030, FLR (CMT - 5yr. + 5.306%) to 5/15/2171 | &nbsp;&nbsp;11586000 | &nbsp;&nbsp;&nbsp;&nbsp; **11417521** |
| Galaxy Pipeline Assets Bidco Ltd., 1.75%, 9/30/2027 (n) | &nbsp;&nbsp;13258037 | &nbsp;&nbsp;&nbsp;&nbsp; **12771219** |
| Plains All American Pipeline LP, 4.65%, 10/15/2025 | &nbsp;&nbsp;15024000 | &nbsp;&nbsp;&nbsp;&nbsp; **15000106** |
| Plains All American Pipeline LP, 5.95%, 6/15/2035 | &nbsp;&nbsp;10914000 | &nbsp;&nbsp;&nbsp;&nbsp; **10921353** |
| Plains All American Pipeline LP, 4.9%, 2/15/2045 | &nbsp;&nbsp;13471000 | &nbsp;&nbsp;&nbsp;&nbsp; **11003810** |
| Rockies Express Pipeline LLC, 4.95%, 7/15/2029 (n) | &nbsp;&nbsp;15327000 | &nbsp;&nbsp;&nbsp;&nbsp; **14651340** |
| Rockies Express Pipeline LLC, 7.5%, 7/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6372000 | &nbsp;&nbsp;&nbsp;&nbsp; **6252350** |
| Rockies Express Pipeline LLC, 6.875%, 4/15/2040 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3106000 | &nbsp;&nbsp;&nbsp;&nbsp; **2932113** |
| Targa Resources Corp., 4.2%, 2/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;7413000 | &nbsp;&nbsp;&nbsp;&nbsp; **6769603** |
| Targa Resources Corp., 4.95%, 4/15/2052 | &nbsp;&nbsp;20769000 | &nbsp;&nbsp;&nbsp;&nbsp; **16725035** |
| Targa Resources Corp., 6.25%, 7/01/2052 | &nbsp;&nbsp;&nbsp;&nbsp;3900000 | &nbsp;&nbsp;&nbsp;&nbsp; **3750652** |
| Venture Global Calcasieu Pass LLC, 6.25%, 1/15/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4378000 | &nbsp;&nbsp;&nbsp;&nbsp; **4379204** |
| Venture Global Calcasieu Pass LLC, 4.125%, 8/15/2031 (n) | &nbsp;&nbsp;12365000 | &nbsp;&nbsp;&nbsp;&nbsp; **11108137** |
| Venture Global LNG, Inc., 9% to 9/30/2029, FLR (CMT - 5yr. + 5.44%) to 3/30/2173 (n) | &nbsp;&nbsp;10694000 | &nbsp;&nbsp;&nbsp;&nbsp; **9191866** |
|  |  | &nbsp;&nbsp; **$198409877** |
| Municipals – 0.6% | Municipals – 0.6% | Municipals – 0.6% |
| Golden State, CA, Tobacco Securitization Corp., Tobacco Settlement Rev., Taxable, "B", 2.746%, 6/01/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;9830000 | &nbsp;&nbsp;$8404352 |
| Massachusetts Educational Financing Authority, Education Loan Rev., Taxable, "A", 6.352%, 7/01/2049 | &nbsp;&nbsp;&nbsp;&nbsp;9330000 | &nbsp;&nbsp;&nbsp;&nbsp; **9358413** |
| National Finance Authority, NH, Utility Refunding Rev., Taxable (Wheeling Power Co. Project), "A", 6.89%, 4/01/2034 | &nbsp;&nbsp;&nbsp;&nbsp;9495000 | &nbsp;&nbsp;&nbsp;&nbsp; **9850930** |
|  |  | &nbsp;&nbsp; **$27613695** |
| Natural Gas - Distribution – 0.4% | Natural Gas - Distribution – 0.4% | Natural Gas - Distribution – 0.4% |
| Boston Gas Co., 5.843%, 1/10/2035 (n) | $&nbsp;&nbsp;18170000 | &nbsp;&nbsp;$18711396 |
| Natural Gas - Pipeline – 0.5% | Natural Gas - Pipeline – 0.5% | Natural Gas - Pipeline – 0.5% |
| APA Infrastructure Ltd., 5%, 3/23/2035 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;8925000 | &nbsp;&nbsp;$8472370 |
| APA Infrastructure Ltd., 5.75%, 9/16/2044 (n) | &nbsp;&nbsp;14050000 | &nbsp;&nbsp;&nbsp;&nbsp; **13496773** |
|  |  | &nbsp;&nbsp; **$21969143** |
| Oils – 0.8% | Oils – 0.8% | Oils – 0.8% |
| Marathon Petroleum Corp., 5.7%, 3/01/2035 | $&nbsp;&nbsp;24486000 | &nbsp;&nbsp;$23943537 |
| MC Brazil Downstream Trading S.à r.l., 7.25%, 6/30/2031 | &nbsp;&nbsp;18342031 | &nbsp;&nbsp;&nbsp;&nbsp; **14178390** |
|  |  | &nbsp;&nbsp; **$38121927** |
| Other Banks & Diversified Financials – 3.3% | Other Banks & Diversified Financials – 3.3% | Other Banks & Diversified Financials – 3.3% |
| AIB Group PLC, 6.608% to 9/13/2028, FLR (SOFR - 1 day + 2.33%) to 9/13/2029 (n) | $&nbsp;&nbsp;24810000 | &nbsp;&nbsp;$26233495 |
| AIB Group PLC, 5.871% to 3/28/2034, FLR (SOFR - 1 day + 1.91%) to 3/28/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6142000 | &nbsp;&nbsp;&nbsp;&nbsp; **6264283** |
| BBVA Bancomer S.A. (Texas), 8.125%, 1/08/2039 (n) | &nbsp;&nbsp;11170000 | &nbsp;&nbsp;&nbsp;&nbsp; **11381347** |
| BPCE S.A., 5.716% to 1/18/2029, FLR (CMT - 1yr. + 1.959%) to 1/18/2030 (n) | &nbsp;&nbsp;12906000 | &nbsp;&nbsp;&nbsp;&nbsp; **13197895** |
| CaixaBank S.A., 5.673% to 3/15/2029, FLR (SOFR - 1 day + 1.78%) to 3/15/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8464000 | &nbsp;&nbsp;&nbsp;&nbsp; **8728105** |
| CaixaBank S.A., 6.84% to 9/13/2033, FLR (SOFR - 1 day + 2.77%) to 9/13/2034 (n) | &nbsp;&nbsp;21476000 | &nbsp;&nbsp;&nbsp;&nbsp; **23343553** |
| Intesa Sanpaolo S.p.A., 7.8%, 11/28/2053 (n) | &nbsp;&nbsp;11906000 | &nbsp;&nbsp;&nbsp;&nbsp; **13424518** |
| M&T Bank Corp., 7.413% to 10/30/2028, FLR (SOFR - 1 day + 2.80%) to 10/30/2029 | &nbsp;&nbsp;&nbsp;&nbsp;4193000 | &nbsp;&nbsp;&nbsp;&nbsp; **4510585** |
| M&T Bank Corp., 5.053% to 1/27/2033, FLR (SOFR - 1 day + 1.850%) to 1/27/2034 | &nbsp;&nbsp;&nbsp;&nbsp;9528000 | &nbsp;&nbsp;&nbsp;&nbsp; **9169127** |
| Macquarie Bank Ltd. of London, 6.125% to 3/08/2027, FLR (Swap Rate - 5yr. + 4.332%) to 12/31/2165 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3736000 | &nbsp;&nbsp;&nbsp;&nbsp; **3717772** |
| Manufacturers and Traders Trust Co., 4.7%, 1/27/2028 | &nbsp;&nbsp;11201000 | &nbsp;&nbsp;&nbsp;&nbsp; **11258026** |
| Truist Financial Corp., 7.161% to 10/30/2028, FLR (SOFR - 1 day + 2.446%) to 10/30/2029 | &nbsp;&nbsp;12447000 | &nbsp;&nbsp;&nbsp;&nbsp; **13437934** |
| Truist Financial Corp., 5.153% to 8/05/2031, FLR (SOFR - 1 day + 1.571%) to 8/05/2032 | &nbsp;&nbsp;&nbsp;&nbsp;4640000 | &nbsp;&nbsp;&nbsp;&nbsp; **4664732** |
|  |  | &nbsp;&nbsp; **$149331372** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Pharmaceuticals – 1.7% | Pharmaceuticals – 1.7% | Pharmaceuticals – 1.7% |
| AbbVie, Inc., 5.35%, 3/15/2044 | $&nbsp;&nbsp;14936000 | &nbsp;&nbsp;$14446106 |
| AbbVie, Inc., 5.4%, 3/15/2054 | &nbsp;&nbsp;&nbsp;&nbsp;8759000 | &nbsp;&nbsp;&nbsp;&nbsp; **8392502** |
| Bristol-Myers Squibb Co., 5.5%, 2/22/2044 | &nbsp;&nbsp;&nbsp;&nbsp;7453000 | &nbsp;&nbsp;&nbsp;&nbsp; **7306079** |
| Bristol-Myers Squibb Co., 5.55%, 2/22/2054 | &nbsp;&nbsp;&nbsp;&nbsp;4595000 | &nbsp;&nbsp;&nbsp;&nbsp; **4426839** |
| Eli Lilly & Co., 5.5%, 2/12/2055 | &nbsp;&nbsp;&nbsp;&nbsp;6063000 | &nbsp;&nbsp;&nbsp;&nbsp; **6078816** |
| Merck & Co., Inc., 2.75%, 12/10/2051 | &nbsp;&nbsp;&nbsp;&nbsp;7976000 | &nbsp;&nbsp;&nbsp;&nbsp; **4852822** |
| Pfizer Investment Enterprises Pte. Ltd., 5.3%, 5/19/2053 | &nbsp;&nbsp;&nbsp;&nbsp;8900000 | &nbsp;&nbsp;&nbsp;&nbsp; **8241556** |
| Pfizer, Inc., 2.55%, 5/28/2040 | &nbsp;&nbsp;&nbsp;&nbsp;7976000 | &nbsp;&nbsp;&nbsp;&nbsp; **5581706** |
| Roche Holdings, Inc., 5.338%, 11/13/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8944000 | &nbsp;&nbsp;&nbsp;&nbsp; **9283208** |
| Roche Holdings, Inc., 5.489%, 11/13/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8859000 | &nbsp;&nbsp;&nbsp;&nbsp; **9360602** |
|  |  | &nbsp;&nbsp; **$77970236** |
| Pollution Control – 0.2% | Pollution Control – 0.2% | Pollution Control – 0.2% |
| GFL Environmental, Inc., 3.5%, 9/01/2028 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;7073000 | &nbsp;&nbsp;$6707234 |
| GFL Environmental, Inc., 6.75%, 1/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4300000 | &nbsp;&nbsp;&nbsp;&nbsp; **4469853** |
|  |  | &nbsp;&nbsp; **$11177087** |
| Precious Metals & Minerals – 0.6% | Precious Metals & Minerals – 0.6% | Precious Metals & Minerals – 0.6% |
| IAMGOLD Corp., 5.75%, 10/15/2028 (n) | $&nbsp;&nbsp;13761000 | &nbsp;&nbsp;$13631892 |
| Northern Star Resources Ltd. Co., 6.125%, 4/11/2033 (n) | &nbsp;&nbsp;13609000 | &nbsp;&nbsp;&nbsp;&nbsp; **14005105** |
|  |  | &nbsp;&nbsp; **$27636997** |
| Railroad & Shipping – 0.8% | Railroad & Shipping – 0.8% | Railroad & Shipping – 0.8% |
| Burlington Northern Santa Fe LLC, 5.2%, 4/15/2054 | $&nbsp;&nbsp;15724000 | &nbsp;&nbsp;$14713689 |
| Burlington Northern Sante Fe LLC, 5.5%, 3/15/2055 | &nbsp;&nbsp;&nbsp;&nbsp;8973000 | &nbsp;&nbsp;&nbsp;&nbsp; **8811597** |
| Canadian Pacific Railway Co., 3.1%, 12/02/2051 | &nbsp;&nbsp;21527000 | &nbsp;&nbsp;&nbsp;&nbsp; **13897733** |
|  |  | &nbsp;&nbsp; **$37423019** |
| Real Estate - Apartment – 0.4% | Real Estate - Apartment – 0.4% | Real Estate - Apartment – 0.4% |
| American Homes 4 Rent LP, REIT, 5.25%, 3/15/2035 | $&nbsp;&nbsp;19234000 | &nbsp;&nbsp;$18739450 |
| Real Estate - Office – 1.3% | Real Estate - Office – 1.3% | Real Estate - Office – 1.3% |
| Boston Properties LP, REIT, 3.65%, 2/01/2026 | $&nbsp;&nbsp;11718000 | &nbsp;&nbsp;$11597351 |
| Boston Properties LP, REIT, 2.75%, 10/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;9750000 | &nbsp;&nbsp;&nbsp;&nbsp; **9452900** |
| Corporate Office Property LP, REIT, 2%, 1/15/2029 | &nbsp;&nbsp;15034000 | &nbsp;&nbsp;&nbsp;&nbsp; **13454937** |
| Corporate Office Property LP, REIT, 2.75%, 4/15/2031 | &nbsp;&nbsp;17594000 | &nbsp;&nbsp;&nbsp;&nbsp; **15243154** |
| Cousins Properties, Inc., REIT, 5.875%, 10/01/2034 | &nbsp;&nbsp;10580000 | &nbsp;&nbsp;&nbsp;&nbsp; **10586810** |
|  |  | &nbsp;&nbsp; **$60335152** |
| Real Estate - Other – 1.4% | Real Estate - Other – 1.4% | Real Estate - Other – 1.4% |
| EPR Properties, REIT, 3.6%, 11/15/2031 | $&nbsp;&nbsp;21022000 | &nbsp;&nbsp;$18584992 |
| Lexington Realty Trust Co., 2.375%, 10/01/2031 | &nbsp;&nbsp;16265000 | &nbsp;&nbsp;&nbsp;&nbsp; **13616912** |
| Prologis LP, REIT, 5.125%, 1/15/2034 | &nbsp;&nbsp;17925000 | &nbsp;&nbsp;&nbsp;&nbsp; **17928335** |
| W.P. Carey, Inc., REIT, 2.45%, 2/01/2032 | &nbsp;&nbsp;15391000 | &nbsp;&nbsp;&nbsp;&nbsp; **12892584** |
|  |  | &nbsp;&nbsp; **$63022823** |
| Real Estate - Retail – 0.9% | Real Estate - Retail – 0.9% | Real Estate - Retail – 0.9% |
| NNN REIT, Inc., 5.6%, 10/15/2033 | $&nbsp;&nbsp;13247000 | &nbsp;&nbsp;$13413354 |
| STORE Capital Corp., REIT, 4.625%, 3/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;3986000 | &nbsp;&nbsp;&nbsp;&nbsp; **3885065** |
| STORE Capital Corp., REIT, 2.75%, 11/18/2030 | &nbsp;&nbsp;&nbsp;&nbsp;3448000 | &nbsp;&nbsp;&nbsp;&nbsp; **3027009** |
| STORE Capital Corp., REIT, 2.7%, 12/01/2031 | &nbsp;&nbsp;23100000 | &nbsp;&nbsp;&nbsp;&nbsp; **19553914** |
|  |  | &nbsp;&nbsp; **$39879342** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Retailers – 1.4% | Retailers – 1.4% | Retailers – 1.4% |
| Alimentation Couche-Tard, Inc., 3.8%, 1/25/2050 (n) | $&nbsp;&nbsp;16792000 | &nbsp;&nbsp;$11725115 |
| Amazon.com, Inc., 3.6%, 4/13/2032 | &nbsp;&nbsp;12124000 | &nbsp;&nbsp;&nbsp;&nbsp; **11499909** |
| Home Depot, Inc., 4.85%, 6/25/2031 | &nbsp;&nbsp;&nbsp;&nbsp;4354000 | &nbsp;&nbsp;&nbsp;&nbsp; **4446064** |
| Home Depot, Inc., 3.3%, 4/15/2040 | &nbsp;&nbsp;15616000 | &nbsp;&nbsp;&nbsp;&nbsp; **12332577** |
| Home Depot, Inc., 3.9%, 6/15/2047 | &nbsp;&nbsp;&nbsp;&nbsp;2382000 | &nbsp;&nbsp;&nbsp;&nbsp; **1856086** |
| Parkland Corp., 6.625%, 8/15/2032 (n) | &nbsp;&nbsp;20048000 | &nbsp;&nbsp;&nbsp;&nbsp; **19955661** |
|  |  | &nbsp;&nbsp; **$61815412** |
| Specialty Chemicals – 0.9% | Specialty Chemicals – 0.9% | Specialty Chemicals – 0.9% |
| International Flavors & Fragrances, Inc., 1.23%, 10/01/2025 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;8252000 | &nbsp;&nbsp;$8103613 |
| International Flavors & Fragrances, Inc., 1.832%, 10/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3953000 | &nbsp;&nbsp;&nbsp;&nbsp; **3693438** |
| International Flavors & Fragrances, Inc., 2.3%, 11/01/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4867000 | &nbsp;&nbsp;&nbsp;&nbsp; **4235558** |
| International Flavors & Fragrances, Inc., 5%, 9/26/2048 | &nbsp;&nbsp;20902000 | &nbsp;&nbsp;&nbsp;&nbsp; **17389710** |
| International Flavors & Fragrances, Inc., 3.468%, 12/01/2050 (n) | &nbsp;&nbsp;10211000 | &nbsp;&nbsp;&nbsp;&nbsp; **6573541** |
|  |  | &nbsp;&nbsp; **$39995860** |
| Specialty Stores – 0.3% | Specialty Stores – 0.3% | Specialty Stores – 0.3% |
| DICK'S Sporting Goods, 4.1%, 1/15/2052 | $&nbsp;&nbsp;17191000 | &nbsp;&nbsp;$11778874 |
| Supermarkets – 0.4% | Supermarkets – 0.4% | Supermarkets – 0.4% |
| Kroger Co., 5%, 9/15/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;7927000 | &nbsp;&nbsp;$7769409 |
| Kroger Co., 5.5%, 9/15/2054 | &nbsp;&nbsp;12325000 | &nbsp;&nbsp;&nbsp;&nbsp; **11528921** |
|  |  | &nbsp;&nbsp; **$19298330** |
| Telecommunications - Wireless – 2.4% | Telecommunications - Wireless – 2.4% | Telecommunications - Wireless – 2.4% |
| American Tower Corp., 5.2%, 2/15/2029 | $&nbsp;&nbsp;11727000 | &nbsp;&nbsp;$11993162 |
| American Tower Corp., 5.45%, 2/15/2034 | &nbsp;&nbsp;11654000 | &nbsp;&nbsp;&nbsp;&nbsp; **11838084** |
| American Tower Corp., 3.7%, 10/15/2049 | &nbsp;&nbsp;&nbsp;&nbsp;6005000 | &nbsp;&nbsp;&nbsp;&nbsp; **4273365** |
| Cellnex Finance Co. S.A., 3.875%, 7/07/2041 (n) | &nbsp;&nbsp;18925000 | &nbsp;&nbsp;&nbsp;&nbsp; **14554023** |
| Crown Castle, Inc., REIT, 4.45%, 2/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;8755000 | &nbsp;&nbsp;&nbsp;&nbsp; **8723459** |
| Crown Castle, Inc., REIT, 3.65%, 9/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8862000 | &nbsp;&nbsp;&nbsp;&nbsp; **8666653** |
| Rogers Communications, Inc., 4.5%, 3/15/2042 | &nbsp;&nbsp;&nbsp;&nbsp;8577000 | &nbsp;&nbsp;&nbsp;&nbsp; **7186272** |
| Rogers Communications, Inc., 4.55%, 3/15/2052 | &nbsp;&nbsp;&nbsp;&nbsp;3085000 | &nbsp;&nbsp;&nbsp;&nbsp; **2434358** |
| T-Mobile USA, Inc., 5.05%, 7/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;8401000 | &nbsp;&nbsp;&nbsp;&nbsp; **8346875** |
| T-Mobile USA, Inc., 3%, 2/15/2041 | &nbsp;&nbsp;17961000 | &nbsp;&nbsp;&nbsp;&nbsp; **12850386** |
| Vodafone Group PLC, 5.625%, 2/10/2053 | &nbsp;&nbsp;19986000 | &nbsp;&nbsp;&nbsp;&nbsp; **18537767** |
|  |  | &nbsp;&nbsp; **$109404404** |
| Tobacco – 1.3% | Tobacco – 1.3% | Tobacco – 1.3% |
| B.A.T. Capital Corp., 6.343%, 8/02/2030 | $&nbsp;&nbsp;12025000 | &nbsp;&nbsp;$12852813 |
| Imperial Brands Finance PLC, 5.5%, 2/01/2030 (n) | &nbsp;&nbsp;16674000 | &nbsp;&nbsp;&nbsp;&nbsp; **17135032** |
| Japan Tobacco, Inc., 5.25%, 6/15/2030 (n) | &nbsp;&nbsp;15373000 | &nbsp;&nbsp;&nbsp;&nbsp; **15897189** |
| Philip Morris International, Inc., 5.625%, 11/17/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5491000 | &nbsp;&nbsp;&nbsp;&nbsp; **5754906** |
| Philip Morris International, Inc., 5.125%, 2/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;7490000 | &nbsp;&nbsp;&nbsp;&nbsp; **7683162** |
|  |  | &nbsp;&nbsp; **$59323102** |
| Transportation - Services – 0.7% | Transportation - Services – 0.7% | Transportation - Services – 0.7% |
| Element Fleet Management Corp., 6.319%, 12/04/2028 (n) | $&nbsp;&nbsp;19070000 | &nbsp;&nbsp;$20059688 |
| Element Fleet Management Corp., 5.037%, 3/25/2030 (n) | &nbsp;&nbsp;11010000 | &nbsp;&nbsp;&nbsp;&nbsp; **10955961** |
|  |  | &nbsp;&nbsp; **$31015649** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| U.S. Treasury Obligations – 2.0% | U.S. Treasury Obligations – 2.0% | U.S. Treasury Obligations – 2.0% |
| U.S. Treasury Bonds, 2.375%, 2/15/2042 (f) | $&nbsp;&nbsp;12575000 | &nbsp;&nbsp;$9219538 |
| U.S. Treasury Bonds, 3.875%, 5/15/2043 | &nbsp;&nbsp;19959000 | &nbsp;&nbsp;&nbsp;&nbsp; **18020014** |
| U.S. Treasury Bonds, 4.375%, 8/15/2043 | &nbsp;&nbsp;&nbsp;&nbsp;4748000 | &nbsp;&nbsp;&nbsp;&nbsp; **4578111** |
| U.S. Treasury Bonds, 4.75%, 11/15/2043 | &nbsp;&nbsp;&nbsp;&nbsp;8368000 | &nbsp;&nbsp;&nbsp;&nbsp; **8454295** |
| U.S. Treasury Bonds, 4.5%, 2/15/2044 | &nbsp;&nbsp;&nbsp;&nbsp;9509000 | &nbsp;&nbsp;&nbsp;&nbsp; **9291705** |
| U.S. Treasury Bonds, 4.625%, 5/15/2044 | &nbsp;&nbsp;16164000 | &nbsp;&nbsp;&nbsp;&nbsp; **16037087** |
| U.S. Treasury Bonds, 4.125%, 8/15/2044 | &nbsp;&nbsp;22219000 | &nbsp;&nbsp;&nbsp;&nbsp; **20594236** |
| U.S. Treasury Bonds, 4.75%, 2/15/2045 | &nbsp;&nbsp;&nbsp;&nbsp;4510000 | &nbsp;&nbsp;&nbsp;&nbsp; **4541006** |
|  |  | &nbsp;&nbsp; **$90735992** |
| Utilities - Electric Power – 9.3% | Utilities - Electric Power – 9.3% | Utilities - Electric Power – 9.3% |
| Adani Electricity Mumbai Ltd., 3.867%, 7/22/2031 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;4802000 | &nbsp;&nbsp;$3931146 |
| Adani Transmission Ltd., 4.25%, 5/21/2036 | &nbsp;&nbsp;&nbsp;&nbsp;4974950 | &nbsp;&nbsp;&nbsp;&nbsp; **4131918** |
| Adani Transmission Step-One Ltd., 4%, 8/03/2026 | &nbsp;&nbsp;14632000 | &nbsp;&nbsp;&nbsp;&nbsp; **14086169** |
| AEP Transmission Co. LLC, 5.4%, 3/15/2053 | &nbsp;&nbsp;&nbsp;&nbsp;5852000 | &nbsp;&nbsp;&nbsp;&nbsp; **5497871** |
| Algonquin Power & Utilities Corp., 5.365%, 6/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;5767000 | &nbsp;&nbsp;&nbsp;&nbsp; **5804455** |
| American Transmission Systems, Inc., 2.65%, 1/15/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4691000 | &nbsp;&nbsp;&nbsp;&nbsp; **4073700** |
| Berkshire Hathaway Energy Co., 5.15%, 11/15/2043 | &nbsp;&nbsp;&nbsp;&nbsp;3795000 | &nbsp;&nbsp;&nbsp;&nbsp; **3535715** |
| Berkshire Hathaway Energy Co., 4.6%, 5/01/2053 | &nbsp;&nbsp;&nbsp;&nbsp;3159000 | &nbsp;&nbsp;&nbsp;&nbsp; **2579600** |
| DTE Energy Co., 4.95%, 7/01/2027 | &nbsp;&nbsp;11963000 | &nbsp;&nbsp;&nbsp;&nbsp; **12086189** |
| Duke Energy Carolinas LLC, 2.45%, 2/01/2030 | &nbsp;&nbsp;15465000 | &nbsp;&nbsp;&nbsp;&nbsp; **14190354** |
| Duke Energy Florida LLC, 3.4%, 10/01/2046 | &nbsp;&nbsp;&nbsp;&nbsp;5361000 | &nbsp;&nbsp;&nbsp;&nbsp; **3788456** |
| Duke Energy Florida LLC, 6.2%, 11/15/2053 | &nbsp;&nbsp;&nbsp;&nbsp;8443000 | &nbsp;&nbsp;&nbsp;&nbsp; **8858372** |
| Enel Finance International N.V., 4.625%, 6/15/2027 (n) | &nbsp;&nbsp;13065000 | &nbsp;&nbsp;&nbsp;&nbsp; **13096817** |
| Enel Finance International N.V., 2.5%, 7/12/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7340000 | &nbsp;&nbsp;&nbsp;&nbsp; **6379149** |
| Enel Finance International N.V., 5.5%, 6/15/2052 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4500000 | &nbsp;&nbsp;&nbsp;&nbsp; **4082019** |
| Enel Finance International N.V., 7.75%, 10/14/2052 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9393000 | &nbsp;&nbsp;&nbsp;&nbsp; **11095526** |
| ENGIE Energia Chile S.A., 6.375%, 4/17/2034 (n) | &nbsp;&nbsp;16327000 | &nbsp;&nbsp;&nbsp;&nbsp; **16834868** |
| ENGIE Energía Chile S.A., 3.4%, 1/28/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3638000 | &nbsp;&nbsp;&nbsp;&nbsp; **3297116** |
| Eversource Energy, 5.5%, 1/01/2034 | &nbsp;&nbsp;11861000 | &nbsp;&nbsp;&nbsp;&nbsp; **11862314** |
| FirstEnergy Corp., 3.9%, 7/15/2027 | &nbsp;&nbsp;16631000 | &nbsp;&nbsp;&nbsp;&nbsp; **16438791** |
| FirstEnergy Corp., 3.4%, 3/01/2050 | &nbsp;&nbsp;16280000 | &nbsp;&nbsp;&nbsp;&nbsp; **10717591** |
| Florida Power & Light Co., 2.45%, 2/03/2032 | &nbsp;&nbsp;&nbsp;&nbsp;6909000 | &nbsp;&nbsp;&nbsp;&nbsp; **6028676** |
| Florida Power & Light Co., 3.95%, 3/01/2048 | &nbsp;&nbsp;&nbsp;&nbsp;8281000 | &nbsp;&nbsp;&nbsp;&nbsp; **6502651** |
| Georgia Power Co., 4.7%, 5/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;4686000 | &nbsp;&nbsp;&nbsp;&nbsp; **4655655** |
| Georgia Power Co., 4.95%, 5/17/2033 | &nbsp;&nbsp;&nbsp;&nbsp;6985000 | &nbsp;&nbsp;&nbsp;&nbsp; **6967243** |
| Georgia Power Co., 5.125%, 5/15/2052 | &nbsp;&nbsp;13035000 | &nbsp;&nbsp;&nbsp;&nbsp; **11945072** |
| Jersey Central Power & Light Co., 2.75%, 3/01/2032 (n) | &nbsp;&nbsp;22679000 | &nbsp;&nbsp;&nbsp;&nbsp; **19567202** |
| Jersey Central Power & Light Co., 5.1%, 1/15/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3866000 | &nbsp;&nbsp;&nbsp;&nbsp; **3810245** |
| MidAmerican Energy Co., 5.85%, 9/15/2054 | &nbsp;&nbsp;14824000 | &nbsp;&nbsp;&nbsp;&nbsp; **14987061** |
| NextEra Energy Capital Holdings, Inc., 5.749%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;8412000 | &nbsp;&nbsp;&nbsp;&nbsp; **8438262** |
| Northern States Power Co. of Minnesota, 5.05%, 5/15/2035 (w) | &nbsp;&nbsp;15877000 | &nbsp;&nbsp;&nbsp;&nbsp; **15930861** |
| Oncor Electric Delivery Co. LLC, 5.35%, 4/01/2035 (n) | &nbsp;&nbsp;13943000 | &nbsp;&nbsp;&nbsp;&nbsp; **14117570** |
| Pacific Gas & Electric Co., 5.45%, 6/15/2027 | &nbsp;&nbsp;10156000 | &nbsp;&nbsp;&nbsp;&nbsp; **10286293** |
| Pacific Gas & Electric Co., 2.5%, 2/01/2031 | &nbsp;&nbsp;27538000 | &nbsp;&nbsp;&nbsp;&nbsp; **23766197** |
| Pacific Gas & Electric Co., 6.4%, 6/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;4889000 | &nbsp;&nbsp;&nbsp;&nbsp; **5055105** |
| Pacific Gas & Electric Co., 4%, 12/01/2046 | &nbsp;&nbsp;11946000 | &nbsp;&nbsp;&nbsp;&nbsp; **8510205** |
| PPL Electric Utilities Corp., 4.85%, 2/15/2034 | &nbsp;&nbsp;11696000 | &nbsp;&nbsp;&nbsp;&nbsp; **11597722** |
| Public Service Electric & Gas Co., 5.5%, 3/01/2055 | &nbsp;&nbsp;&nbsp;&nbsp;7751000 | &nbsp;&nbsp;&nbsp;&nbsp; **7533850** |
| Southern California Edison Co., 5.45%, 3/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;4710000 | &nbsp;&nbsp;&nbsp;&nbsp; **4572401** |
| Southern California Edison Co., 4.5%, 9/01/2040 | &nbsp;&nbsp;&nbsp;&nbsp;7827000 | &nbsp;&nbsp;&nbsp;&nbsp; **6469918** |
| WEC Energy Group, Inc., 4.75%, 1/09/2026 | &nbsp;&nbsp;22326000 | &nbsp;&nbsp;&nbsp;&nbsp; **22348245** |
| Xcel Energy, Inc., 5.5%, 3/15/2034 | &nbsp;&nbsp;17216000 | &nbsp;&nbsp;&nbsp;&nbsp; **17252096** |
| Xcel Energy, Inc., 5.6%, 4/15/2035 | &nbsp;&nbsp;&nbsp;&nbsp;2148000 | &nbsp;&nbsp;&nbsp;&nbsp; **2168908** |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Utilities - Electric Power – continued | Utilities - Electric Power – continued | Utilities - Electric Power – continued |
| XPLR Infrastructure Operating Partners LP, 7.25%, 1/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4000000 | &nbsp;&nbsp;$3958738 |
| XPLR Infrastructure Operating Partners LP, 8.375%, 1/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6828000 | &nbsp;&nbsp;&nbsp;&nbsp; **6853062** |
| XPLR Infrastructure Operating Partners LP, 8.625%, 3/15/2033 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2010000 | &nbsp;&nbsp;&nbsp;&nbsp; **2005767** |
|  |  | &nbsp;&nbsp; **$421697141** |
| **Total Bonds (Identified Cost, $4,531,433,003)** |  | &nbsp;&nbsp;**$4399809636** |
| Mutual Funds (h) – 2.2% | Mutual Funds (h) – 2.2% | Mutual Funds (h) – 2.2% |
| Money Market Funds – 2.2% | Money Market Funds – 2.2% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) (Identified Cost, $97,864,787) | &nbsp;&nbsp;97863104 | &nbsp;&nbsp;$97863104 |
| Other Assets, Less Liabilities – 0.7% |  | &nbsp;&nbsp;&nbsp;&nbsp; **31386180** |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | **$4529058920** |

---

(f) All or a portion of the security has been segregated as collateral for open futures contracts.

(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values
of the fund's investments in affiliated issuers and in unaffiliated issuers were $97,863,104 and $4,399,809,636, respectively.

(i) Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the security.

(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 $1,501,305,325, representing 33.1% of net assets.

(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period
end.

(w) When-issued security.

---

| | |
|:---|:---|
| The following abbreviations are used in this report and are defined: | The following abbreviations are used in this report and are defined: |
| CLO | &nbsp;&nbsp;Collateralized Loan Obligation |
| CMT | &nbsp;&nbsp;Constant Maturity Treasury |
| FLR | &nbsp;&nbsp;Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate. All reference rates are USD unless otherwise noted. |
| LIBOR | &nbsp;&nbsp;London Interbank Offered Rate |
| REIT | &nbsp;&nbsp;Real Estate Investment Trust |
| SOFR | &nbsp;&nbsp;Secured Overnight Financing Rate |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** |
| **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** |
| **Description** | &nbsp;&nbsp;&nbsp;&nbsp;**Long/<br> Short** | &nbsp;&nbsp;&nbsp;&nbsp;**Currency** | &nbsp;&nbsp;&nbsp;&nbsp;**Contracts** | &nbsp;&nbsp;&nbsp;&nbsp;**Notional<br> Amount** | &nbsp;&nbsp;&nbsp;&nbsp;**Expiration<br> Date** | &nbsp;&nbsp;&nbsp;&nbsp;**Value/Unrealized<br> Appreciation<br> (Depreciation)** |
| **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Bond 30 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;978 | &nbsp;&nbsp;&nbsp;&nbsp;$114059250 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$412542 |
| U.S. Treasury Note 2 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;828 | &nbsp;&nbsp;&nbsp;&nbsp;172346907 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1597995 |
|  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;$2010537 |
| **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 10 yr | &nbsp;&nbsp;&nbsp;&nbsp;Short | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7967531 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(4700) |
| U.S. Treasury Note 5 yr | &nbsp;&nbsp;&nbsp;&nbsp;Short | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;310 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33850547 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(157633) |
| U.S. Treasury Ultra Bond 30 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;492 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59547375 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;(1316686) |

---

------

MFS Corporate Bond Fund

Portfolio of Investments – continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| Futures Contracts - continued | Futures Contracts - continued | Futures Contracts - continued | Futures Contracts - continued | Futures Contracts - continued | Futures Contracts - continued | Futures Contracts - continued |
| Description | &nbsp;&nbsp;&nbsp;&nbsp;Long/<br> Short | &nbsp;&nbsp;&nbsp;&nbsp;Currency | &nbsp;&nbsp;&nbsp;&nbsp;Contracts | &nbsp;&nbsp;&nbsp;&nbsp;Notional<br> Amount | &nbsp;&nbsp;&nbsp;&nbsp;Expiration<br> Date | &nbsp;&nbsp;&nbsp;&nbsp;Value/Unrealized<br> Appreciation<br> (Depreciation) |
| Liability Derivatives - continued | Liability Derivatives - continued | Liability Derivatives - continued | Liability Derivatives - continued | Liability Derivatives - continued | Liability Derivatives - continued | Liability Derivatives - continued |
| ***Interest Rate Futures - continued*** | ***Interest Rate Futures - continued*** | ***Interest Rate Futures - continued*** | ***Interest Rate Futures - continued*** | ***Interest Rate Futures - continued*** |  |  |
| U.S. Treasury Ultra Note 10 yr | &nbsp;&nbsp;&nbsp;&nbsp;Short | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;852 | &nbsp;&nbsp;&nbsp;&nbsp;$97753688 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$(1773715) |
|  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;$(3252734) |

---

At April 30, 2025, the fund had liquid securities with an aggregate value of $5,977,453 to cover any collateral or margin obligations for certain derivative contracts.

#### See Notes to Financial Statements

------

MFS Corporate Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Assets and Liabilities** |

---

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

---

| | |
|:---|:---|
| **At 4/30/25 <br>Assets** |  |
| Investments in unaffiliated issuers, at value (identified cost, $4,531,433,003) | &nbsp;&nbsp;$4399809636 |
| Investments in affiliated issuers, at value (identified cost, $97,864,787) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97863104 |
| Cash | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;446539 |
| Receivables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4719383 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3824156 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest and dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49629870 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6971 |
| Total assets | &nbsp;&nbsp;$4556299659 |
| **Liabilities** |  |
| Payables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$573489 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net daily variation margin on open futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;674349 |
| &nbsp;&nbsp;&nbsp;&nbsp;When-issued investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15865569 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8819580 |
| Payable to affiliates |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91357 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3003 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;914840 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25139 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1388 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;272025 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$27240739 |
| Net assets | &nbsp;&nbsp;$4529058920 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp;$5360411900 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;(831352980) |
| Net assets | &nbsp;&nbsp;$4529058920 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;368802411 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Net assets** | &nbsp;&nbsp;&nbsp;&nbsp;**Shares<br> outstanding** | &nbsp;&nbsp;&nbsp;&nbsp;**Net asset value<br> per share (a)** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;$1668483388 | &nbsp;&nbsp;&nbsp;&nbsp;135755651 | &nbsp;&nbsp;&nbsp;&nbsp;$12.29 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;707515 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57667 | &nbsp;&nbsp;&nbsp;&nbsp;12.27 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28059342 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2290393 | &nbsp;&nbsp;&nbsp;&nbsp;12.25 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;990033181 | &nbsp;&nbsp;&nbsp;&nbsp;80659396 | &nbsp;&nbsp;&nbsp;&nbsp;12.27 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3866822 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;315338 | &nbsp;&nbsp;&nbsp;&nbsp;12.26 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9542987 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;776115 | &nbsp;&nbsp;&nbsp;&nbsp;12.30 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19834884 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1612968 | &nbsp;&nbsp;&nbsp;&nbsp;12.30 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52406795 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4262296 | &nbsp;&nbsp;&nbsp;&nbsp;12.30 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;1756124006 | &nbsp;&nbsp;&nbsp;&nbsp;143072587 | &nbsp;&nbsp;&nbsp;&nbsp;12.27 |

---

(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 $12.84 [100 / 95.75 x $12.29]. 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, Class B, and
Class C shares. Redemption price per share was equal to the net asset value per share for Classes I, R1, R2, R3, R4, and R6.

------

MFS Corporate Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Operations** |

---

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

---

| | |
|:---|:---|
| **Year ended 4/30/25 <br>Net investment income (loss)** |  |
| Income |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest | &nbsp;&nbsp;$233808342 |
| &nbsp;&nbsp;&nbsp;&nbsp;Dividends from affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4234783 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1284258 |
| Total investment income | &nbsp;&nbsp;$239327383 |
| Expenses |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Management fee | &nbsp;&nbsp;&nbsp;$17509915 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4726284 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3123453 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;603090 |
| &nbsp;&nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;79793 |
| &nbsp;&nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;209972 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;569106 |
| &nbsp;&nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;83333 |
| &nbsp;&nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22841 |
| &nbsp;&nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;339839 |
| Total expenses | &nbsp;&nbsp;&nbsp;$27267626 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fees paid indirectly | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6209) |
| &nbsp;&nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(619139) |
| Net expenses | &nbsp;&nbsp;&nbsp;$26642278 |
| Net investment income (loss) | &nbsp;&nbsp;$212685105 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;$(54636631) |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6192) |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5641214) |
| Net realized gain (loss) | &nbsp;&nbsp;$(60284037) |
| Change in unrealized appreciation or depreciation |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;$173060884 |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1505) |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;582400 |
| Net unrealized gain (loss) | &nbsp;&nbsp;$173641779 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;$113357742 |
| Change in net assets from operations | &nbsp;&nbsp;$326042847 |

---

------

MFS Corporate Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statements of Changes in Net Assets** |

---

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | |
|:---|:---|:---|
|  | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;$212685105 | &nbsp;&nbsp;&nbsp;&nbsp;$186438205 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;(60284037) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(268593307) |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;173641779 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;144771478 |
| Change in net assets from operations | &nbsp;&nbsp;&nbsp;$326042847 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$62616376 |
| Total distributions to shareholders | &nbsp;&nbsp;$(213933375) | &nbsp;&nbsp;&nbsp;&nbsp;$(187927023) |
| Change in net assets from fund share transactions | &nbsp;&nbsp;&nbsp;&nbsp;$64280324 | &nbsp;&nbsp;&nbsp;&nbsp;$193995534 |
| Total change in net assets | &nbsp;&nbsp;&nbsp;$176389796 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$68684887 |
| **Net assets** |  |  |
| At beginning of period | &nbsp;&nbsp;4352669124 | &nbsp;&nbsp;&nbsp;&nbsp;4283984237 |
| At end of period | $4529058920 | &nbsp;&nbsp;&nbsp;$4352669124 |

---

------

MFS Corporate Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Financial Highlights** |

---

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class A** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.88 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.55 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.74 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.81) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.53) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.94 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.42 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $1668483 | &nbsp;&nbsp;$1663876 | &nbsp;&nbsp;&nbsp;$1726630 | &nbsp;&nbsp;&nbsp;$1932006 | &nbsp;&nbsp;&nbsp;$2328936 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class B** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $11.95 | &nbsp;&nbsp;$12.28 | &nbsp;&nbsp;&nbsp;$12.68 | &nbsp;&nbsp;&nbsp;$15.06 | &nbsp;&nbsp;&nbsp;&nbsp;$14.85 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(1.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Total from investment operations | &nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;$0.09 | &nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;$(1.68) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.62 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.46) | &nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | $(0.46) | &nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | $12.27 | &nbsp;&nbsp;$11.95 | &nbsp;&nbsp;&nbsp;$12.28 | &nbsp;&nbsp;&nbsp;$12.68 | &nbsp;&nbsp;&nbsp;&nbsp;$15.06 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.58 | &nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;(11.70) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.17 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.71 | &nbsp;&nbsp;&nbsp;&nbsp;3.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.70 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$708 | &nbsp;&nbsp;$1734 | &nbsp;&nbsp;&nbsp;$3585 | &nbsp;&nbsp;&nbsp;$6283 | &nbsp;&nbsp;&nbsp;$10838 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Corporate Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class C** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$11.93 | &nbsp;&nbsp;&nbsp;$12.26 | &nbsp;&nbsp;&nbsp;&nbsp;$12.67 | &nbsp;&nbsp;&nbsp;&nbsp;$15.04 | &nbsp;&nbsp;&nbsp;&nbsp;$14.84 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.91) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;&nbsp;$0.09 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.67) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.61 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.25 | &nbsp;&nbsp;&nbsp;$11.93 | &nbsp;&nbsp;&nbsp;&nbsp;$12.26 | &nbsp;&nbsp;&nbsp;&nbsp;$12.67 | &nbsp;&nbsp;&nbsp;&nbsp;$15.04 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;6.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;(11.65) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.10 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;3.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.68 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $28059 | &nbsp;&nbsp;$34108 | &nbsp;&nbsp;&nbsp;$42440 | &nbsp;&nbsp;&nbsp;$61283 | &nbsp;&nbsp;&nbsp;$98956 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class I** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$11.95 | &nbsp;&nbsp;&nbsp;&nbsp;$12.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.87 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;$0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$0.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.77 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(0.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.85) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.57) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$12.27 | &nbsp;&nbsp;&nbsp;&nbsp;$11.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.07 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.64 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.67 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(10.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.14 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.66 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $990033 | &nbsp;&nbsp;$942477 | &nbsp;&nbsp;&nbsp;$934582 | &nbsp;&nbsp;&nbsp;$1062759 | &nbsp;&nbsp;&nbsp;$1573250 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Corporate Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R1** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $11.94 | &nbsp;&nbsp;$12.28 | &nbsp;&nbsp;&nbsp;$12.68 | &nbsp;&nbsp;&nbsp;$15.05 | &nbsp;&nbsp;&nbsp;$14.85 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.46 | &nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;(1.91) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 |
| Total from investment operations | &nbsp;&nbsp;$0.78 | &nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;$(1.67) | &nbsp;&nbsp;&nbsp;&nbsp;$0.61 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.46) | &nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;$(0.27) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | $(0.46) | &nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;$(0.70) | &nbsp;&nbsp;&nbsp;$(0.41) |
| Net asset value, end of period (x) | $12.26 | &nbsp;&nbsp;$11.94 | &nbsp;&nbsp;&nbsp;$12.28 | &nbsp;&nbsp;&nbsp;$12.68 | &nbsp;&nbsp;&nbsp;$15.05 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.58 | &nbsp;&nbsp;&nbsp;&nbsp;0.65 | &nbsp;&nbsp;&nbsp;&nbsp;(0.48) | &nbsp;&nbsp;&nbsp;(11.64) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.10 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.71 | &nbsp;&nbsp;&nbsp;&nbsp;3.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.62 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.68 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $3867 | &nbsp;&nbsp;$4071 | &nbsp;&nbsp;&nbsp;$3629 | &nbsp;&nbsp;&nbsp;$3922 | &nbsp;&nbsp;&nbsp;$5391 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R2** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $11.97 | &nbsp;&nbsp;&nbsp;$12.31 | &nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;$15.09 | &nbsp;&nbsp;&nbsp;&nbsp;$14.88 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.52 | &nbsp;&nbsp;&nbsp;&nbsp;$0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.91) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Total from investment operations | &nbsp;&nbsp;$0.85 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.70 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | $(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.48) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.78) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.49) |
| Net asset value, end of period (x) | $12.30 | &nbsp;&nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;&nbsp;$12.31 | &nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;$15.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.03 | &nbsp;&nbsp;&nbsp;&nbsp;(11.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.68 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.02 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.18 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $9543 | &nbsp;&nbsp;$13963 | &nbsp;&nbsp;&nbsp;$17271 | &nbsp;&nbsp;&nbsp;$19328 | &nbsp;&nbsp;&nbsp;$28348 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Corporate Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R3** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;$12.31 | &nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.88 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.55 | &nbsp;&nbsp;&nbsp;&nbsp;$0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.89 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.57) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.74 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.56) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.51) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.81) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.53) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.30 | &nbsp;&nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;&nbsp;$12.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11.00) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.94 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;4.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.43 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $19835 | &nbsp;&nbsp;$19949 | &nbsp;&nbsp;&nbsp;$24627 | &nbsp;&nbsp;&nbsp;$136630 | &nbsp;&nbsp;&nbsp;$162465 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R4** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;$12.31 | &nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;$15.09 | &nbsp;&nbsp;&nbsp;&nbsp;$14.89 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.58 | &nbsp;&nbsp;&nbsp;&nbsp;$0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.92 | &nbsp;&nbsp;&nbsp;&nbsp;$0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.05 | &nbsp;&nbsp;&nbsp;&nbsp;$(1.53) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.77 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.43) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.59) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.85) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.57) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$12.30 | &nbsp;&nbsp;&nbsp;$11.97 | &nbsp;&nbsp;&nbsp;&nbsp;$12.31 | &nbsp;&nbsp;&nbsp;&nbsp;$12.71 | &nbsp;&nbsp;&nbsp;&nbsp;$15.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.67 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;(10.78) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.13 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;4.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.67 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $52407 | &nbsp;&nbsp;$54316 | &nbsp;&nbsp;&nbsp;$53301 | &nbsp;&nbsp;&nbsp;$61624 | &nbsp;&nbsp;&nbsp;$73890 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Corporate Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R6** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$14.87 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.92) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.78 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) |
| From net realized gain |  | &nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.45) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.60) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.86) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.58) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$12.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$15.07 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.63 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(10.70) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.23 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.41 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.76 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 |
| Net assets at end of period (000 omitted) | $1756124 | &nbsp;&nbsp;$1618176 | &nbsp;&nbsp;&nbsp;$1477919 | &nbsp;&nbsp;&nbsp;$1614162 | &nbsp;&nbsp;&nbsp;$1849423 |

---

(d) Per share data is based on average shares outstanding.

(f) Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note 2 in the Notes to Financial Statements for additional information.

(r) Certain expenses have been reduced without which performance would have been lower.

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

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at
period end for financial reporting purposes.

------

MFS Corporate Bond Fund

### Notes to Financial Statements
(1) Business and Organization

MFS Corporate Bond Fund (the fund) is a diversified series of MFS Series Trust IX (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.**

In this reporting period, the fund adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect the fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. The fund represents a single operating segment and the Chairman's Committee of the fund's adviser acts as the segment's CODM. The fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within the fund's financial statements.

**Balance Sheet Offsetting — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.**

**Investment Valuations — Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.**

Under the fund's valuation policy and procedures, debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

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 the fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments, such as futures contracts. The following is a summary of the levels used as of April 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| U.S. Treasury Bonds & U.S. Government Agencies & Equivalents | $— | &nbsp;&nbsp;&nbsp;&nbsp;$90735992 | $— | &nbsp;&nbsp;&nbsp;&nbsp;$90735992 |
| Non - U.S. Sovereign Debt |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80626407 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80626407 |
| Municipal Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27613695 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27613695 |
| U.S. Corporate Bonds |  | &nbsp;&nbsp;2878220406 |  | &nbsp;&nbsp;2878220406 |
| Residential Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37189401 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37189401 |
| Commercial Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25056766 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25056766 |
| Asset-Backed Securities (including CDOs) |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57519598 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57519598 |
| Foreign Bonds |  | &nbsp;&nbsp;1202847371 |  | &nbsp;&nbsp;1202847371 |
| Investment Companies | &nbsp;&nbsp;97863104 |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97863104 |
| Total | $97863104 | $4399809636 | $— | $4497672740 |

---

---

| | | | |
|:---|:---|:---|:---|
| **Other Financial Instruments** |  |  |  |
| Futures Contracts – Assets | $2010537 | $— | $2010537 |
| Futures Contracts – Liabilities | (3252734) |  | (3252734) |

---

For further information regarding security characteristics, see the Portfolio of Investments.

**Foreign Currency Translation — Purchases and sales of foreign investments, income, and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions or on the reporting date for foreign denominated receivables and payables. Gains and losses attributable to foreign currency exchange rates on sales of securities are recorded for financial statement purposes as net realized gains and losses on investments. Gains and losses attributable to foreign exchange rate movements on receivables, payables, income and expenses are recorded for financial statement purposes as foreign currency transaction gains and losses. That portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed.**

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

**Derivatives — The fund uses derivatives primarily to increase or decrease exposure to a particular market or segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. Derivatives are used for hedging or non-hedging purposes. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. When the fund uses derivatives as an investment to increase market exposure, or for hedging purposes, gains and losses from derivative instruments may be substantially greater than the derivative's original cost.**

The derivative instruments used by the fund during the period were futures contracts. Depending on the type of derivative, a fund may exit a derivative position by entering into an offsetting transaction with a counterparty or exchange, negotiating an agreement with the derivative counterparty, or novating the position to a third party. The fund may be unable to promptly close out a futures position in instances where the daily fluctuation in the price for that type of future exceeds the daily limit set by the exchange. The fund's period end derivatives, as presented in the Portfolio of Investments and the associated Derivative Contract tables, generally are indicative of the volume of its derivative activity during the period.

The following table presents, by major type of derivative contract, the fair value, on a gross basis, of the asset and liability components of derivatives held by the fund at April 30, 2025 as reported in the Statement of Assets and Liabilities:

---

| | | | |
|:---|:---|:---|:---|
|  |  | &nbsp;&nbsp;**Fair Value (a)** | &nbsp;&nbsp;**Fair Value (a)** |
| **Risk** | **Derivative Contracts** | &nbsp;&nbsp;**Asset Derivatives** | &nbsp;&nbsp;**Liability Derivatives** |
| Interest Rate | Futures Contracts | &nbsp;&nbsp;$2010537 | &nbsp;&nbsp;$(3252734) |

---

(a) Values presented in this table for futures contracts correspond to the values reported in the Portfolio of Investments. Only the current day net variation margin for futures contracts is reported separately within the Statement of Assets and Liabilities.

The following table presents, by major type of derivative contract, the realized gain (loss) on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures<br> Contracts** |
| Interest Rate | $(5641214) |

---

The following table presents, by major type of derivative contract, the change in unrealized appreciation or depreciation on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures<br> Contracts** |
| Interest Rate | $582400 |

---

Derivative counterparty credit risk is managed through formal evaluation of the creditworthiness of all potential counterparties. On certain, but not all, uncleared derivatives, the fund attempts to reduce its exposure to counterparty credit risk whenever possible by entering into an ISDA Master Agreement on a bilateral basis. The ISDA Master Agreement gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a specified deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each agreement to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the ISDA Master Agreement could result in a reduction of the fund's credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

Collateral and margin requirements differ by type of derivative. For cleared derivatives (e.g., futures contracts, cleared swaps, and exchange-traded options), margin requirements are set by the clearing broker and the clearing house and collateral, in the form of cash or securities, is posted by the fund directly with the clearing broker. Collateral terms are counterparty agreement specific for uncleared derivatives (e.g., forward foreign currency exchange contracts, uncleared swap agreements, and uncleared options). Collateral, in the form of cash and securities, is held in segregated accounts with the fund's custodian in connection with these agreements. For derivatives traded under an ISDA Master Agreement, which contains a credit support annex, the collateral requirements are netted across all transactions traded under such counterparty-specific agreement and an amount is posted from one party to the other to collateralize such obligations. Cash that has been segregated or delivered to cover the fund's collateral or margin obligations under derivative contracts, if any, will be reported separately in the Statement of Assets and Liabilities as restricted cash for uncleared derivatives and/or deposits with brokers for cleared derivatives. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments. The fund may be required to make payments of interest on uncovered collateral or margin obligations with the broker. Any such payments are included in "Miscellaneous" expense in the Statement of Operations.

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

**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.

**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 securities on a when-issued or delayed delivery basis. In these extended settlement transactions, the receipt or delivery of the securities by the fund and related payments occur at a future date, usually beyond the customary settlement period. The price of such security and the date that the security will be settled are generally fixed at the time the transaction is negotiated. The value of the security varies with market fluctuations and for debt securities no interest accrues to the fund until settlement takes place. When the fund sells securities on a when-issued or delayed delivery basis, the fund typically owns or has the right to acquire securities equivalent in kind and amount to the securities sold. Purchase and sale commitments for when-issued or delayed delivery securities are held at carrying amount, which approximates fair value and are categorized as level 2 within the fair value hierarchy, and included in When-issued investments purchased and When-issued investments sold in the Statement of Assets and Liabilities, as applicable. Losses may arise due to changes in the value of the underlying securities prior to settlement date or if the counterparty does not perform under the contract's terms, or if the issuer does not issue the 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.

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

**Fees Paid Indirectly — The fund's custody fee may be reduced by a credit earned under an arrangement that measures the value of U.S. dollars deposited with the custodian by the fund. The amount of the credit, for the year ended April 30, 2025, is shown as a reduction of total expenses in the Statement of Operations.**

**Tax Matters and Distributions — The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.**

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

Book/tax differences primarily relate to amortization of premium and accretion of discount of debt securities and wash sale loss deferrals.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$213933375 | &nbsp;&nbsp;&nbsp;$187927023 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | |
|:---|:---|
| **As of 4/30/25** |  |
| Cost of investments | &nbsp;&nbsp;&nbsp;$4635514390 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61399212 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(200483059) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;$(139083847) |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22050838 |
| Capital loss carryforwards | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(696211995) |
| Other temporary differences | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(18107976) |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$(831352980) |

---

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 | &nbsp;&nbsp;$(99047238) |
| Long-Term | &nbsp;&nbsp;(597164757) |
| Total | $(696211995) |

---

**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 B and 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 Corporate Bond Fund

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
|  | **Year<br> ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year<br> ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$76450049 | &nbsp;&nbsp;&nbsp;&nbsp;$70907408 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46017 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;92301 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;1174308 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1312809 |
| Class I | &nbsp;&nbsp;&nbsp;48335359 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;41264416 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;157296 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;130064 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;486400 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;575106 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;891049 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;947764 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;2536861 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2350203 |
| Class R6 | &nbsp;&nbsp;&nbsp;83856036 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70346952 |
| Total | $213933375 | &nbsp;&nbsp;&nbsp;$187927023 |

---

(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 $1.1 billion | 0.39% |
| In excess of $1.1 billion and up to $5 billion | 0.38% |
| In excess of $5 billion and up to $10 billion | 0.35% |
| In excess of $10 billion | 0.34% |

---

MFS has agreed in writing to reduce its management fee by a specified amount if certain MFS mutual fund assets exceed thresholds agreed to by MFS and the fund's Board of Trustees. MFS has also agreed in writing to waive at least 0.01% of its management fee as part of this agreement. The agreement to waive at least 0.01% of the management fee will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2026. For the year ended April 30, 2025, this management fee reduction amounted to $617,737, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.37% of the fund's average daily net assets.

**Distributor — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received $46,921 for the year ended April 30, 2025, as its portion of the initial sales charge on sales of Class A shares of the fund.**

The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.

The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. The distribution and service fees are computed daily and paid monthly.

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

#### Distribution Plan Fee Table:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.25% | $4251045 |
| Class B | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12343 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;313917 |
| Class R1 | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42068 |
| Class R2 | 0.25% | 0.25% | 0.50% | 0.50% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57367 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.25% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;49544 |
| Total Distribution and Service Fees |  |  |  |  | $4726284 |

---

(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each class's average daily
net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended April 30, 2025 based on each class's average daily net assets. MFD has
voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on the account except for accounts attributable to MFS or its
affiliates' seed money. For the year ended April 30, 2025, this rebate amounted to $1,278, $6, $1, $80, and $37 for Class A, Class B, Class C, Class R2, and Class R3 shares, respectively, and is included in the
reduction of total expenses in the Statement of Operations.

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended April 30, 2025, were as follows:

---

| | |
|:---|:---|
|  | **Amount** |
| Class A | $38863 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;234 |
| Class C | &nbsp;&nbsp;&nbsp;3175 |

---

**Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended April 30, 2025, the fee was $324,396, which equated to 0.0071% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended April 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $2,799,057.**

**Administrator — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.0132% 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.**

MFS purchased or redeemed fund shares on the dates indicated:

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Date** | **Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;8 | &nbsp;&nbsp;$97 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;32 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;43 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;32 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;42 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;37 |

---

(4) Portfolio Securities

For the year ended April 30, 2025, purchases and sales of investments, other than short-term obligations, were as follows:

---

| | | |
|:---|:---|:---|
|  | **Purchases** | &nbsp;&nbsp;**Sales** |
| U.S. Government securities | &nbsp;&nbsp;$77775196 | &nbsp;&nbsp;&nbsp;$183085984 |
| Non-U.S. Government securities | 1641950090 | &nbsp;&nbsp;1484614912 |

---

(5) Shares of Beneficial Interest

The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | 17222797 | &nbsp;&nbsp;&nbsp;&nbsp;$213633564 | &nbsp;&nbsp;&nbsp;20355489 | &nbsp;&nbsp;&nbsp;&nbsp;$245183532 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8116 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;100334 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;621 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7434 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;571728 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7092896 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;522435 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6293541 |
| &nbsp;&nbsp;&nbsp;Class I | 30691331 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;380880738 | &nbsp;&nbsp;&nbsp;34548462 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;416872789 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;53149 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;657419 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;116118 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1400732 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;170508 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2110781 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;225961 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2732698 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;287800 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3562956 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;535015 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6477883 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;798307 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9897696 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;861022 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10419848 |
| &nbsp;&nbsp;&nbsp;Class R6 | 33870945 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;418649201 | &nbsp;&nbsp;&nbsp;41078844 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;494696785 |
|  | 83674681 | &nbsp;&nbsp;&nbsp;$1036585585 | &nbsp;&nbsp;&nbsp;98243967 | &nbsp;&nbsp;&nbsp;$1184085242 |
| Shares issued to shareholders<br> in reinvestment of distributions |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;6075105 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$75207149 | &nbsp;&nbsp;&nbsp;&nbsp;5744442 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$69160809 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3682 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45492 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6890 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;82703 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;89745 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1107064 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;104046 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1248318 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;3641686 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45025568 | &nbsp;&nbsp;&nbsp;&nbsp;3098413 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37260428 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12717 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;157075 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10805 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129977 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39190 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;485104 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47419 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;571077 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71918 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;890815 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78733 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;947193 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;204365 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2530933 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;194852 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2347176 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;6601614 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;81621756 | &nbsp;&nbsp;&nbsp;&nbsp;5664354 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;68122044 |
|  | 16740022 | &nbsp;&nbsp;&nbsp;&nbsp;$207070956 | &nbsp;&nbsp;&nbsp;14949954 | &nbsp;&nbsp;&nbsp;&nbsp;$179869725 |

---

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares reacquired |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | (26569611) | &nbsp;&nbsp;&nbsp;&nbsp;$(328229208) | &nbsp;&nbsp;(27408823) | &nbsp;&nbsp;&nbsp;&nbsp;$(329480958) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;(99246) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1223329) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(154346) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1840334) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;(1230089) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(15127271) | &nbsp;&nbsp;&nbsp;(1227831) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(14717551) |
| &nbsp;&nbsp;&nbsp;Class I | (32523575) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(401071289) | &nbsp;&nbsp;(34849044) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(415586780) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;(91431) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1123398) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(81673) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(985258) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(599849) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7397035) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(510435) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6162013) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;(412727) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5082906) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(948375) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11467386) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;(1277167) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(15783651) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(849760) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(10224655) |
| &nbsp;&nbsp;&nbsp;Class R6 | (32780219) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(404338130) | &nbsp;&nbsp;(31632145) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(379494498) |
|  | (95583914) | &nbsp;&nbsp;$(1179376217) | &nbsp;&nbsp;(97662432) | &nbsp;&nbsp;$(1169959433) |
| Net change |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;(3271709) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(39388495) | &nbsp;&nbsp;&nbsp;(1308892) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(15136617) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;(87448) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1077503) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(146835) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1750197) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(568616) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6927311) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(601350) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7175692) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;1809442 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24835017 | &nbsp;&nbsp;&nbsp;&nbsp;2797831 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38546437 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;(25565) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(308904) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45250 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;545451 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(390151) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4801150) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(237055) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2858238) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;(53009) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(629135) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(334627) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4042310) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;(274495) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3355022) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;206114 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2542369 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;7692340 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95932827 | &nbsp;&nbsp;&nbsp;15111053 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;183324331 |
|  | &nbsp;&nbsp;4830789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$64280324 | &nbsp;&nbsp;&nbsp;15531489 | &nbsp;&nbsp;&nbsp;&nbsp;$193995534 |

---

Effective June 1, 2019, purchases of the fund's Class B shares were closed to new and existing investors subject to certain exceptions. Effective September 29, 2023, purchases of the fund's Class R1 and Class R2 shares were closed to new eligible investors.

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended April 30, 2025, the fund's commitment fee and interest expense were $21,954 and $0, respectively, and are included in "Miscellaneous" expense in the Statement of Operations.

(7) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the year ended April 30, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$125256423 | &nbsp;&nbsp;&nbsp;$1071111225 | &nbsp;&nbsp;&nbsp;$1098496847 | &nbsp;&nbsp;&nbsp;$(6192) | &nbsp;&nbsp;&nbsp;$(1505) | &nbsp;&nbsp;&nbsp;$97863104 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Corporate Bond Fund

Notes to Financial Statements - continued

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$4234783 | &nbsp;&nbsp;&nbsp;$— |

---

------

MFS Corporate Bond Fund

### Report of Independent Registered Public Accounting Firm
To the Board of Trustees of MFS Series Trust IX and the Shareholders of MFS Corporate Bond Fund:

#### Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of MFS Corporate Bond Fund (the "Fund"), including the portfolio of investments, as of April 30, 2025, the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of April 30, 2025, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

#### Basis for Opinion
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of April 30, 2025, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

DELOITTE & TOUCHE LLP

Boston, Massachusetts

June 13, 2025

We have served as the auditor of one or more of the MFS investment companies since 1924.

------

MFS Corporate Bond Fund

### Results of Shareholder Meeting (unaudited)
At a special meeting of shareholders of MFS Series Trust IX, which was held on November 14, 2024, the following action was taken:

#### Item 1: To elect the following individuals as Trustees, effective January 1, 2025:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Number of Dollars** | &nbsp;&nbsp;&nbsp;**Number of Dollars** |
| **Nominee** | &nbsp;&nbsp;&nbsp;**For** | &nbsp;&nbsp;&nbsp;**Against/Withheld** |
| Steven E. Buller | &nbsp;&nbsp;&nbsp;16907334964.271 | &nbsp;&nbsp;&nbsp;564877606.664 |
| John A. Caroselli | &nbsp;&nbsp;&nbsp;16919748090.782 | &nbsp;&nbsp;&nbsp;552464480.153 |
| Maureen R. Goldfarb | &nbsp;&nbsp;&nbsp;16987867788.742 | &nbsp;&nbsp;&nbsp;484344782.193 |
| Peter D. Jones | &nbsp;&nbsp;&nbsp;16947211557.080 | &nbsp;&nbsp;&nbsp;525001013.855 |
| John P. Kavanaugh | &nbsp;&nbsp;&nbsp;16952477521.647 | &nbsp;&nbsp;&nbsp;519735049.288 |
| James W. Kilman, Jr. | &nbsp;&nbsp;&nbsp;16931150908.125 | &nbsp;&nbsp;&nbsp;541061662.810 |
| Clarence Otis, Jr. | &nbsp;&nbsp;&nbsp;16921309024.232 | &nbsp;&nbsp;&nbsp;550903546.702 |
| Michael W. Roberge | &nbsp;&nbsp;&nbsp;16956315372.901 | &nbsp;&nbsp;&nbsp;515897198.033 |
| Maryanne L. Roepke | &nbsp;&nbsp;&nbsp;16988422371.536 | &nbsp;&nbsp;&nbsp;483790199.398 |
| Paula E. Smith | &nbsp;&nbsp;&nbsp;17026175142.111 | &nbsp;&nbsp;&nbsp;446037428.824 |
| Laurie J. Thomsen | &nbsp;&nbsp;&nbsp;16991821354.292 | &nbsp;&nbsp;&nbsp;480391216.642 |
| Darrell A. Williams | &nbsp;&nbsp;&nbsp;16944148530.126 | &nbsp;&nbsp;&nbsp;528064040.808 |

---

------

MFS Corporate Bond Fund

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

The fund intends to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

------

#### ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
There is nothing to report for this item for MFS Corporate Bond Fund.

#### ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Corporate 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 Corporate Bond Fund. See the Statement of Operations and Note 3 within the Notes to Financial Statements for more information.

#### ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.
Not Applicable.

------

MFS Limited Maturity Fund

#### ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
MFS Limited Maturity Fund

### Portfolio of Investments - 4/30/25
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – 98.0% | Bonds – 98.0% | Bonds – 98.0% |
| Aerospace & Defense – 1.1% | Aerospace & Defense – 1.1% | Aerospace & Defense – 1.1% |
| Boeing Co., 2.196%, 2/04/2026 | $&nbsp;&nbsp;20405000 | &nbsp;&nbsp;$19992208 |
| Boeing Co., 6.388%, 5/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;9937000 | &nbsp;&nbsp;&nbsp;&nbsp; **10603442** |
| Huntington Ingalls Industries, Inc., 5.353%, 1/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;5090000 | &nbsp;&nbsp;&nbsp;&nbsp; **5187309** |
|  |  | &nbsp;&nbsp; **$35782959** |
| Apparel Manufacturers – 0.1% | Apparel Manufacturers – 0.1% | Apparel Manufacturers – 0.1% |
| Tapestry, Inc., 5.1%, 3/11/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;2423000 | &nbsp;&nbsp;$2432533 |
| Asset-Backed & Securitized – 22.5% | Asset-Backed & Securitized – 22.5% | Asset-Backed & Securitized – 22.5% |
| 3650R Commercial Mortgage Trust, 2021-PF1, "XA", 1.113%, 11/15/2054 (i) | $&nbsp;&nbsp;89342747 | &nbsp;&nbsp;$3586843 |
| 37 Capital CLO Ltd., 2022-1A, "BR", 5.956%, 7/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9400000 | &nbsp;&nbsp;&nbsp;&nbsp; **9234381** |
| ACREC 2021-FL1 Ltd., "AS", FLR, 5.934% ((SOFR - 1mo. + 0.11448%) + 1.5%), 10/16/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5944500 | &nbsp;&nbsp;&nbsp;&nbsp; **5902688** |
| ACREC 2021-FL1 Ltd., "B", FLR, 6.234% ((SOFR - 1mo. + 0.11448%) + 1.8%), 10/16/2036 (n) | &nbsp;&nbsp;11776000 | &nbsp;&nbsp;&nbsp;&nbsp; **11737338** |
| ACREC 2021-FL1 Ltd., "C", FLR, 6.584% ((SOFR - 1mo. + 0.11448%) + 2.15%), 10/16/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5972500 | &nbsp;&nbsp;&nbsp;&nbsp; **5943692** |
| ACREC 2023-FL2 LLC, "A", FLR, 6.552% (SOFR - 1mo. + 2.23%), 2/19/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5372752 | &nbsp;&nbsp;&nbsp;&nbsp; **5377792** |
| ACREC 2025-FL3 LLC, "A", FLR, 5.63% (SOFR - 1mo. + 1.31%), 8/18/2042 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3571429 | &nbsp;&nbsp;&nbsp;&nbsp; **3529465** |
| Affirm Asset Securitization Trust, 2024-X2, "A", 5.22%, 12/17/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1706838 | &nbsp;&nbsp;&nbsp;&nbsp; **1705652** |
| American Credit Acceptance Receivables Trust, 2024-3, "B", 5.66%, 8/14/2028 (n) | &nbsp;&nbsp;10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10061637** |
| AmeriCredit Automobile Receivables Trust, 2024-1, "A", 5.61%, 1/12/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;57304 | &nbsp;&nbsp;&nbsp;&nbsp; **57324** |
| AmeriCredit Automobile Receivables Trust, 2024-1, "A2-A", 5.75%, 2/18/2028 | &nbsp;&nbsp;&nbsp;&nbsp;3482946 | &nbsp;&nbsp;&nbsp;&nbsp; **3491957** |
| Angel Oak Mortgage Trust, 2024-13, "A1", 5.464%, 12/26/2069 (n) | &nbsp;&nbsp;12870873 | &nbsp;&nbsp;&nbsp;&nbsp; **12867832** |
| Angel Oak Mortgage Trust, 2024-7, "A1", 5.621%, 5/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4145763 | &nbsp;&nbsp;&nbsp;&nbsp; **4153399** |
| Angel Oak Mortgage Trust, 2024-9, "A1", 5.138%, 9/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4583844 | &nbsp;&nbsp;&nbsp;&nbsp; **4558584** |
| Arbor Realty Trust, Inc., CLO, 2021-FL3, "B", FLR, 6.036% ((SOFR - 1mo. + 0.11448%) + 1.6%), 8/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3008500 | &nbsp;&nbsp;&nbsp;&nbsp; **2975870** |
| Arbor Realty Trust, Inc., CLO, 2021-FL3, "C", FLR, 6.286% ((SOFR - 1mo. + 0.11448%) + 1.85%), 8/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1746500 | &nbsp;&nbsp;&nbsp;&nbsp; **1725282** |
| Arbor Realty Trust, Inc., CLO, 2021-FL4, "AS", FLR, 6.136% ((SOFR - 1mo. + 0.11448%) + 1.7%), 11/15/2036 (n) | &nbsp;&nbsp;11713500 | &nbsp;&nbsp;&nbsp;&nbsp; **11709188** |
| Arbor Realty Trust, Inc., CLO, 2021-FL4, "B", FLR, 6.436% ((SOFR - 1mo. + 0.11448%) + 2%), 11/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7713500 | &nbsp;&nbsp;&nbsp;&nbsp; **7682401** |
| Arbor Realty Trust, Inc., CLO, 2021-FL4, "C", FLR, 6.736% ((SOFR - 1mo. + 0.11448%) + 2.3%), 11/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4645000 | &nbsp;&nbsp;&nbsp;&nbsp; **4607622** |
| Arbor Realty Trust, Inc., CLO, 2022-FL1, "C", FLR, 6.645% (SOFR - 30 day + 2.3%), 1/15/2037 (n) | &nbsp;&nbsp;12447500 | &nbsp;&nbsp;&nbsp;&nbsp; **12377081** |
| AREIT 2022-CRE6 Trust, "C", FLR, 6.5% (SOFR - 30 day + 2.15%), 1/20/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4174000 | &nbsp;&nbsp;&nbsp;&nbsp; **4134170** |
| AREIT 2022-CRE6 Trust, "D", FLR, 7.2% (SOFR - 30 day + 2.85%), 1/20/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2549000 | &nbsp;&nbsp;&nbsp;&nbsp; **2537240** |
| AREIT 2022-CRE7 LLC, "B", FLR, 7.572% (SOFR - 1mo. + 3.244%), 6/17/2039 (n) | &nbsp;&nbsp;12436500 | &nbsp;&nbsp;&nbsp;&nbsp; **12446934** |
| ARI Fleet Lease Trust, 2023-B, "A2", 6.05%, 7/15/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1535537 | &nbsp;&nbsp;&nbsp;&nbsp; **1547586** |
| Bain Capital Credit CLO Ltd., 2021-4A, "BR", FLR, 5.919% (SOFR - 3mo. + 1.65%), 10/20/2034 (n) | &nbsp;&nbsp;10589623 | &nbsp;&nbsp;&nbsp;&nbsp; **10416853** |
| Bain Capital Credit CLO Ltd., 2021-7A, "BR", FLR, 5.772% (SOFR - 3mo. + 1.5%), 1/22/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8775562 | &nbsp;&nbsp;&nbsp;&nbsp; **8658417** |
| Balboa Bay Loan Funding Ltd., 2022-1A, "BR", 6.119% (SOFR - 3mo. + 1.85%), 4/20/2037 (n) | &nbsp;&nbsp;15426798 | &nbsp;&nbsp;&nbsp;&nbsp; **15426474** |
| Bardot CLO Ltd., 2019-2A, "CRR", FLR, 5.822% (SOFR - 3mo. + 1.55%), 10/22/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5464286 | &nbsp;&nbsp;&nbsp;&nbsp; **5372940** |
| Bayview Commercial Asset Trust, FLR, 4.906% ((SOFR - 1mo. + 0.11448%) + 0.4658%), 8/25/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;140526 | &nbsp;&nbsp;&nbsp;&nbsp; **135463** |
| Bayview Financial Revolving Mortgage Loan Trust, FLR, 6.034% ((SOFR - 1mo. + 0.11448%) + 1.6%), 12/28/2040 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78374 | &nbsp;&nbsp;&nbsp;&nbsp; **152652** |
| BBCMS Mortgage Trust, 2018-C2, "XA", 0.913%, 12/15/2051 (i)(n) | &nbsp;&nbsp;61400810 | &nbsp;&nbsp;&nbsp;&nbsp; **1305344** |
| BBCMS Mortgage Trust, 2021-C10, "XA", 1.334%, 7/15/2054 (i) | &nbsp;&nbsp;33652121 | &nbsp;&nbsp;&nbsp;&nbsp; **1830847** |
| BBCMS Mortgage Trust, 2021-C11, "XA", 1.47%, 9/15/2054 (i) | &nbsp;&nbsp;38589984 | &nbsp;&nbsp;&nbsp;&nbsp; **2259694** |
| BBCMS Mortgage Trust, 2021-C9, "XA", 1.704%, 2/15/2054 (i) | &nbsp;&nbsp;53722146 | &nbsp;&nbsp;&nbsp;&nbsp; **3748565** |
| BDS 2021-FL10 Ltd., "B", FLR, 6.384% ((SOFR - 1mo. + 0.11448%) + 1.95%), 12/16/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3637500 | &nbsp;&nbsp;&nbsp;&nbsp; **3602708** |
| BDS 2021-FL10 Ltd., "C", FLR, 6.734% ((SOFR - 1mo. + 0.11448%) + 2.3%), 12/16/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2645500 | &nbsp;&nbsp;&nbsp;&nbsp; **2625020** |
| Benchmark 2021-B23 Mortgage Trust, "XA", 1.363%, 2/15/2054 (i) | &nbsp;&nbsp;59694999 | &nbsp;&nbsp;&nbsp;&nbsp; **3099161** |
| Benchmark 2021-B24 Mortgage Trust, "XA", 1.254%, 3/15/2054 (i) | &nbsp;&nbsp;38202390 | &nbsp;&nbsp;&nbsp;&nbsp; **1681681** |
| Benchmark 2021-B27 Mortgage Trust, "XA", 1.35%, 7/15/2054 (i) | &nbsp;&nbsp;69441839 | &nbsp;&nbsp;&nbsp;&nbsp; **3774567** |
| Benchmark 2021-B28 Mortgage Trust, "XA", 1.369%, 8/15/2054 (i) | &nbsp;&nbsp;52660249 | &nbsp;&nbsp;&nbsp;&nbsp; **2921970** |

---

MQLFS-ANN

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued |
| Benchmark 2021-B29 Mortgage Trust, "XA", 1.129%, 9/15/2054 (i) | $&nbsp;&nbsp;77398606 | &nbsp;&nbsp;$3101083 |
| BSPDF 2021-FL1 Issuer Ltd., "AS", FLR, 5.916% ((SOFR - 1mo. + 0.11448%) + 1.48%), 10/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9140000 | &nbsp;&nbsp;&nbsp;&nbsp; **9064257** |
| BSPDF 2021-FL1 Issuer Ltd., "B", FLR, 6.236% ((SOFR - 1mo. + 0.11448%) + 1.8%), 10/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3130500 | &nbsp;&nbsp;&nbsp;&nbsp; **3101471** |
| BSPDF 2021-FL1 Issuer Ltd., "C", FLR, 6.686% ((SOFR - 1mo. + 0.11448%) + 2.25%), 10/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8000000 | &nbsp;&nbsp;&nbsp;&nbsp; **7911552** |
| BSPRT 2021-FL6 Issuer Ltd., "C", FLR, 6.486% ((SOFR - 1mo. + 0.11448%) + 2.05%), 3/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2447500 | &nbsp;&nbsp;&nbsp;&nbsp; **2417215** |
| BSPRT 2021-FL7 Issuer Ltd., "B", FLR, 6.486% ((SOFR - 1mo. + 0.11448%) + 2.05%), 12/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1552000 | &nbsp;&nbsp;&nbsp;&nbsp; **1541583** |
| BSPRT 2021-FL7 Issuer Ltd., "C", FLR, 6.736% ((SOFR - 1mo. + 0.11448%) + 2.3%), 12/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1869500 | &nbsp;&nbsp;&nbsp;&nbsp; **1850171** |
| BSPRT 2022-FL8 Issuer Ltd., "A", FLR, 5.844% (SOFR - 30 day + 1.5%), 2/15/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6550446 | &nbsp;&nbsp;&nbsp;&nbsp; **6523820** |
| BSPRT 2022-FL8 Issuer Ltd., "B", FLR, 6.394% (SOFR - 30 day + 2.05%), 2/15/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2054500 | &nbsp;&nbsp;&nbsp;&nbsp; **2045356** |
| BSPRT 2022-FL8 Issuer Ltd., "C", FLR, 6.644% (SOFR - 30 day + 2.3%), 2/15/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3317000 | &nbsp;&nbsp;&nbsp;&nbsp; **3304416** |
| Business Jet Securities LLC, 2024-1A, "A", 6.197%, 5/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3636865 | &nbsp;&nbsp;&nbsp;&nbsp; **3683701** |
| Business Jet Securities LLC, 2024-1A, "B", 6.924%, 5/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;422911 | &nbsp;&nbsp;&nbsp;&nbsp; **428179** |
| Business Jet Securities LLC, 2024-2A, "A", 5.364%, 9/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4352398 | &nbsp;&nbsp;&nbsp;&nbsp; **4322137** |
| Business Jet Securities LLC, 2024-2A, "B", 5.754%, 9/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2543229 | &nbsp;&nbsp;&nbsp;&nbsp; **2495572** |
| BXMT 2020-FL2 Ltd., "B", FLR, 6.092% ((SOFR - 1mo. + 0.11448%) + 1.4%), 2/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5795500 | &nbsp;&nbsp;&nbsp;&nbsp; **5683386** |
| BXMT 2020-FL2 Ltd., "A", FLR, 5.592% ((SOFR - 1mo. + 0.11448%) + 0.9%), 2/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6882505 | &nbsp;&nbsp;&nbsp;&nbsp; **6837101** |
| BXMT 2021-FL4 Ltd., "AS", FLR, 5.743% ((SOFR - 1mo. + 0.11448%) + 1.3%), 5/15/2038 (n) | &nbsp;&nbsp;12062500 | &nbsp;&nbsp;&nbsp;&nbsp; **11745145** |
| C-BASS Mortgage Loan Trust, 2007-CB1, "AF3", 3.109%, 1/25/2037 (d)(q) | &nbsp;&nbsp;&nbsp;&nbsp;1557071 | &nbsp;&nbsp;&nbsp;&nbsp; **427268** |
| C-BASS Mortgage Loan Trust, 2007-CB3, "A3", 3.277%, 3/25/2037 (d)(q) | &nbsp;&nbsp;&nbsp;&nbsp;2049837 | &nbsp;&nbsp;&nbsp;&nbsp; **692167** |
| CD 2017-CD4 Mortgage Trust, "XA", 1.216%, 5/10/2050 (i) | &nbsp;&nbsp;33714952 | &nbsp;&nbsp;&nbsp;&nbsp; **608457** |
| CF Hippolyta Issuer LLC, 2020-1, "A1", 1.69%, 7/15/2060 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1568623 | &nbsp;&nbsp;&nbsp;&nbsp; **1549272** |
| CF Hippolyta Issuer LLC, 2020-1, "B1", 2.28%, 7/15/2060 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;499890 | &nbsp;&nbsp;&nbsp;&nbsp; **492147** |
| Chesapeake Funding II LLC, 2023-1A, "A1", 5.65%, 5/15/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3069807 | &nbsp;&nbsp;&nbsp;&nbsp; **3087531** |
| Chesapeake Funding II LLC, 2023-2A, "A1", 6.16%, 10/15/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3190291 | &nbsp;&nbsp;&nbsp;&nbsp; **3235262** |
| Colt Funding LLC, 2024-2, "A1", 6.125%, 4/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4560369 | &nbsp;&nbsp;&nbsp;&nbsp; **4588723** |
| Colt Funding LLC, 2024-3, "A1", 6.393%, 6/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6794426 | &nbsp;&nbsp;&nbsp;&nbsp; **6862718** |
| Colt Funding LLC, 2024-3, "A2", 6.646%, 6/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2254235 | &nbsp;&nbsp;&nbsp;&nbsp; **2280414** |
| Commercial Mortgage Pass-Through Certificates, 2019-BN24, "XA", 0.75%, 11/15/2062 (i) | &nbsp;&nbsp;34255811 | &nbsp;&nbsp;&nbsp;&nbsp; **892234** |
| Commercial Mortgage Pass-Through Certificates, 2021-BN31, "XA", 1.389%, 2/15/2054 (i) | &nbsp;&nbsp;51460067 | &nbsp;&nbsp;&nbsp;&nbsp; **2961625** |
| Commercial Mortgage Pass-Through Certificates, 2021-BN32, "XA", 0.872%, 4/15/2054 (i) | &nbsp;&nbsp;48491219 | &nbsp;&nbsp;&nbsp;&nbsp; **1574151** |
| Commercial Mortgage Pass-Through Certificates, 2021-BN34, "XA", 1.08%, 6/15/2063 (i) | &nbsp;&nbsp;55689684 | &nbsp;&nbsp;&nbsp;&nbsp; **2360418** |
| Commercial Mortgage Pass-Through Certificates, 2021-BN35, "XA", 1.136%, 6/15/2064 (i) | &nbsp;&nbsp;31565731 | &nbsp;&nbsp;&nbsp;&nbsp; **1454505** |
| COOPR Residential Mortgage Trust, 2025-CES1, "A1A", 5.654%, 5/25/2060 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2476650 | &nbsp;&nbsp;&nbsp;&nbsp; **2485011** |
| Dell Equipment Finance Trust, 2024-2, "A2", 4.69%, 8/22/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5293000 | &nbsp;&nbsp;&nbsp;&nbsp; **5296933** |
| Dell Equipment Finance Trust, 2024-2, "A3", 4.59%, 8/22/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3403000 | &nbsp;&nbsp;&nbsp;&nbsp; **3418938** |
| DLLST LLC, 2024-1A, "A3", 5.05%, 8/20/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1899400 | &nbsp;&nbsp;&nbsp;&nbsp; **1908246** |
| Dryden Senior Loan Fund, 2017-49A, "BR", CLO, FLR, 6.131% ((SOFR - 3mo. + 0.26161%) + 1.6%), 7/18/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9054010 | &nbsp;&nbsp;&nbsp;&nbsp; **9057242** |
| Dryden Senior Loan Fund, 2021-95A, "BR", FLR, 5.922% (SOFR - 3mo. + 1.6%), 8/20/2034 (n) | &nbsp;&nbsp;16500000 | &nbsp;&nbsp;&nbsp;&nbsp; **16385655** |
| DT Auto Owner Trust, 2022-3A, "C", 7.69%, 7/17/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1804078 | &nbsp;&nbsp;&nbsp;&nbsp; **1817922** |
| Empire District Bondco LLC, 4.943%, 1/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;2965723 | &nbsp;&nbsp;&nbsp;&nbsp; **2994654** |
| Enterprise Fleet Financing 2023-1 LLC, "A2", 5.51%, 1/22/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2530830 | &nbsp;&nbsp;&nbsp;&nbsp; **2538386** |
| Enterprise Fleet Financing 2022-4 LLC, "A2", 5.76%, 10/22/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2190338 | &nbsp;&nbsp;&nbsp;&nbsp; **2200149** |
| Enterprise Fleet Financing 2023-2 LLC, "A2", 5.56%, 4/22/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3093211 | &nbsp;&nbsp;&nbsp;&nbsp; **3112399** |
| Enterprise Fleet Financing 2023-2 LLC, "A3", 5.5%, 4/22/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3561000 | &nbsp;&nbsp;&nbsp;&nbsp; **3626364** |
| Enterprise Fleet Financing 2024-3 LLC, "A2", 5.31%, 4/20/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3591812 | &nbsp;&nbsp;&nbsp;&nbsp; **3603702** |
| Exeter Automobile Receivables Trust, 2024-4A, "A3", 5.28%, 8/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;4216000 | &nbsp;&nbsp;&nbsp;&nbsp; **4228181** |
| Fortress CBO Investments Ltd., 2022-FL3, "A", FLR, 6.2% (SOFR - 30 day + 1.85%), 2/23/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;794480 | &nbsp;&nbsp;&nbsp;&nbsp; **788398** |
| Fortress CBO Investments Ltd., 2022-FL3, "AS", FLR, 6.6% (SOFR - 30 day + 2.25%), 2/23/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8299000 | &nbsp;&nbsp;&nbsp;&nbsp; **8138074** |
| General Motors Co., FLR, 4.794% (SOFR - 1mo. + 0.45%), 11/15/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5250000 | &nbsp;&nbsp;&nbsp;&nbsp; **5223321** |
| General Motors Co., FLR, 4.894% (SOFR - 1mo. + 0.55%), 11/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7329000 | &nbsp;&nbsp;&nbsp;&nbsp; **7294472** |
| GreatAmerica Leasing Receivables Funding LLC, 2023-1, "A2", 5.35%, 2/16/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;846266 | &nbsp;&nbsp;&nbsp;&nbsp; **846987** |
| GS Mortgage Securities Trust, 2017-GS6, "XA", 0.996%, 5/10/2050 (i) | &nbsp;&nbsp;37373148 | &nbsp;&nbsp;&nbsp;&nbsp; **561427** |
| GS Mortgage Securities Trust, 2017-GS7, "XA", 1.073%, 8/10/2050 (i) | &nbsp;&nbsp;36144667 | &nbsp;&nbsp;&nbsp;&nbsp; **642851** |
| GS Mortgage Securities Trust, 2020-GC47, "A5", 1.123%, 5/12/2053 (i) | &nbsp;&nbsp;38995033 | &nbsp;&nbsp;&nbsp;&nbsp; **1774761** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued |
| IMPAC CMB Trust, FLR, 5.181% ((SOFR - 1mo. + 0.11448%) + 0.74%), 11/25/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16839 | &nbsp;&nbsp;$16570 |
| IMPAC CMB Trust, FLR, 5.361% ((SOFR - 1mo. + 0.11448%) + 0.92%), 11/25/2034 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17726 | &nbsp;&nbsp;&nbsp;&nbsp; **17511** |
| IMPAC Secured Assets Corp., FLR, 5.141% ((SOFR - 1mo. + 0.11448%) + 0.7%), 5/25/2036 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45718 | &nbsp;&nbsp;&nbsp;&nbsp; **40933** |
| JP Morgan Mortgage Trust, 5.592%, 2/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4830258 | &nbsp;&nbsp;&nbsp;&nbsp; **4859229** |
| JPMorgan Chase Commercial Mortgage Securities Corp., 1.157%, 9/15/2050 (i) | &nbsp;&nbsp;31536822 | &nbsp;&nbsp;&nbsp;&nbsp; **542118** |
| LAD Auto Receivables Trust, 2022-1A, "A", 5.21%, 6/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;556840 | &nbsp;&nbsp;&nbsp;&nbsp; **557320** |
| LAD Auto Receivables Trust, 2024-2A, "A2", 5.7%, 3/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1367526 | &nbsp;&nbsp;&nbsp;&nbsp; **1369268** |
| LAD Auto Receivables Trust, 2024-3A, "A2", 4.64%, 11/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3107195 | &nbsp;&nbsp;&nbsp;&nbsp; **3106236** |
| LoanCore 2021-CRE5 Ltd., "AS", FLR, 6.186% ((SOFR - 1mo. + 0.11448%) + 1.75%), 7/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8481500 | &nbsp;&nbsp;&nbsp;&nbsp; **8441589** |
| LoanCore 2021-CRE5 Ltd., "B", FLR, 6.436% ((SOFR - 1mo. + 0.11448%) + 2.0%), 7/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3588000 | &nbsp;&nbsp;&nbsp;&nbsp; **3571526** |
| Merrill Lynch Mortgage Investors, Inc., 3.597%, 2/25/2037 (a)(d) | &nbsp;&nbsp;&nbsp;&nbsp;1600783 | &nbsp;&nbsp;&nbsp;&nbsp; **180154** |
| MF1 2020-FL4 Ltd., "B", FLR, 7.193% ((SOFR - 1mo. + 0.11448%) + 2.75%), 12/15/2035 (n) | &nbsp;&nbsp;10472500 | &nbsp;&nbsp;&nbsp;&nbsp; **10475805** |
| MF1 2021-FL5 Ltd., "B", FLR, 5.893% ((SOFR - 1mo. + 0.11448%) + 1.45%), 7/15/2036 (n) | &nbsp;&nbsp;13063500 | &nbsp;&nbsp;&nbsp;&nbsp; **12864282** |
| MF1 2021-FL5 Ltd., "C", FLR, 6.142% ((SOFR - 1mo. + 0.11448%) + 1.7%), 7/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3716500 | &nbsp;&nbsp;&nbsp;&nbsp; **3701946** |
| MF1 2021-FL6 Ltd., "B", FLR, 6.084% ((SOFR - 1mo. + 0.11448%) + 1.65%), 7/16/2036 (n) | &nbsp;&nbsp;10716294 | &nbsp;&nbsp;&nbsp;&nbsp; **10515479** |
| MF1 2022-FL8 Ltd., "C", FLR, 6.519% (SOFR - 30 day + 2.2%), 2/19/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2198259 | &nbsp;&nbsp;&nbsp;&nbsp; **2162168** |
| MF1 2022-FL9 LLC, "B", FLR, 7.468% (SOFR - 1mo. + 3.15%), 6/19/2037 (n) | &nbsp;&nbsp;15126500 | &nbsp;&nbsp;&nbsp;&nbsp; **15138420** |
| MF1 2024-FL14 LLC, "C", FLR, 7.608% (SOFR - 1mo. + 3.289%), 3/19/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3863210 | &nbsp;&nbsp;&nbsp;&nbsp; **3879629** |
| Morgan Stanley Bank of America Merrill Lynch Trust, 2017-C33, "XA", 1.39%, 5/15/2050 (i) | &nbsp;&nbsp;30930453 | &nbsp;&nbsp;&nbsp;&nbsp; **509242** |
| Morgan Stanley Capital I Trust, 2017-H1, "XA", 1.45%, 6/15/2050 (i) | &nbsp;&nbsp;14850785 | &nbsp;&nbsp;&nbsp;&nbsp; **261571** |
| Morgan Stanley Capital I Trust, 2018-H4, "XA", 0.968%, 12/15/2051 (i) | &nbsp;&nbsp;47251753 | &nbsp;&nbsp;&nbsp;&nbsp; **1160602** |
| Morgan Stanley Capital I Trust, 2021-L5, "XA", 1.402%, 5/15/2054 (i) | &nbsp;&nbsp;44912424 | &nbsp;&nbsp;&nbsp;&nbsp; **2302669** |
| Morgan Stanley Capital I Trust, 2021-L6, "XA", 1.288%, 6/15/2054 (i) | &nbsp;&nbsp;41586927 | &nbsp;&nbsp;&nbsp;&nbsp; **1877379** |
| Morgan Stanley Residential Mortgage Loan Trust, 2024-NQM1, "A-1", 6.152%, 12/25/2068 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5930416 | &nbsp;&nbsp;&nbsp;&nbsp; **5974016** |
| Morgan Stanley Residential Mortgage Loan Trust, 2024-NQM5, "A-1", 5.649%, 10/25/2069 (n) | &nbsp;&nbsp;11098082 | &nbsp;&nbsp;&nbsp;&nbsp; **11143758** |
| Morgan Stanley Residential Mortgage Loan Trust, 2025-NQM1, "A-1", 5.738%, 11/25/2069 (n) | &nbsp;&nbsp;14837754 | &nbsp;&nbsp;&nbsp;&nbsp; **14930620** |
| New Residential Mortgage Loan Trust, 2024-NQMI, "A-1", 6.129%, 3/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7252142 | &nbsp;&nbsp;&nbsp;&nbsp; **7293278** |
| New Residential Mortgage Loan Trust, 2025-NQM1, "A-1", 0%, 1/25/2065 (n) | &nbsp;&nbsp;13729832 | &nbsp;&nbsp;&nbsp;&nbsp; **13807046** |
| NextGear Floorplan Master Owner Trust, 2023-1A, "A1", FLR, 5.444% (SOFR - 1mo. + 1.1%), 3/15/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4992000 | &nbsp;&nbsp;&nbsp;&nbsp; **5000627** |
| OBX Trust, 2023-NQM5, "A1", 5.988%, 1/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2217244 | &nbsp;&nbsp;&nbsp;&nbsp; **2228635** |
| OBX Trust, 2024-NQM1, "A1", 5.928%, 11/25/2063 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2670581 | &nbsp;&nbsp;&nbsp;&nbsp; **2679567** |
| OBX Trust, 2024-NQM1, "A2", 6.253%, 11/25/2063 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;809428 | &nbsp;&nbsp;&nbsp;&nbsp; **813222** |
| OBX Trust, 2024-NQM8, "A1", 6.233%, 5/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5139875 | &nbsp;&nbsp;&nbsp;&nbsp; **5186404** |
| OneMain Financial Issuance Trust, 2020-2A, "A", 1.75%, 9/14/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8570000 | &nbsp;&nbsp;&nbsp;&nbsp; **8312117** |
| OneMain Financial Issuance Trust, 2022-S1, "A", 4.13%, 5/14/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5509000 | &nbsp;&nbsp;&nbsp;&nbsp; **5484612** |
| Ownit Mortgage Loan Asset-Backed Certificates, 5.79%, 10/25/2035 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;923338 | &nbsp;&nbsp;&nbsp;&nbsp; **510575** |
| Palmer Square Loan Funding 2025-1A Ltd., "A-2", FLR, 5.52% (SOFR - 3mo. + 1.2%), 2/15/2033 (n) | &nbsp;&nbsp;15500000 | &nbsp;&nbsp;&nbsp;&nbsp; **15287402** |
| Provident Funding Mortgage Trust, 2024-1, "A3", 5.5%, 12/25/2054 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8904520 | &nbsp;&nbsp;&nbsp;&nbsp; **8905164** |
| Provident Funding Mortgage Trust, 2025-1, "A", 5.5%, 2/25/2055 (n) | &nbsp;&nbsp;15119562 | &nbsp;&nbsp;&nbsp;&nbsp; **15160797** |
| Santander Drive Auto Receivables Trust, 2024-4, "A2", 5.41%, 7/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;2326701 | &nbsp;&nbsp;&nbsp;&nbsp; **2329581** |
| Shackleton 2013-4RA CLO Ltd., "B", FLR, 6.403% ((SOFR - 3mo. + 2.1616%) + 1.9%) 4/13/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2268542 | &nbsp;&nbsp;&nbsp;&nbsp; **2260001** |
| Shelter Growth CRE 2021-FL3 Ltd., "C", FLR, 6.586% ((SOFR - 1mo. + 0.11448%) + 2.15%), 9/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6411000 | &nbsp;&nbsp;&nbsp;&nbsp; **6405496** |
| Southwick Park CLO, Ltd., 2019-4A, "B1R", FLR, 6.031% ((SOFR - 3mo. + 0.26161%) + 1.5%), 7/20/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2957000 | &nbsp;&nbsp;&nbsp;&nbsp; **2952789** |
| Southwick Park CLO, Ltd., 2019-4A, "B2R", 2.46%, 7/20/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5142000 | &nbsp;&nbsp;&nbsp;&nbsp; **4729848** |
| Southwick Park CLO, Ltd., 2019-4A, "CR", FLR, 6.481% ((SOFR - 3mo. + 0.26161%) + 1.95%), 7/20/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7004000 | &nbsp;&nbsp;&nbsp;&nbsp; **6996842** |
| Starwood Commercial Mortgage, 2021-FL2, "B", FLR, 6.234% ((SOFR - 1mo. + 0.11448%) + 1.8%), 4/18/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8644500 | &nbsp;&nbsp;&nbsp;&nbsp; **8593409** |
| TCW Gem Ltd., 2020-1A, "BR3", FLR, 5.869% (SOFR - 3mo. + 1.6%), 4/20/2034 (n) | &nbsp;&nbsp;17904685 | &nbsp;&nbsp;&nbsp;&nbsp; **17640072** |
| TPG Real Estate Finance, 2021-FL4, "AS", FLR, 5.842% ((SOFR - 1mo. + 0.11448%) + 1.4%), 3/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6062000 | &nbsp;&nbsp;&nbsp;&nbsp; **6040316** |
| TPG Real Estate Finance, 2021-FL4, "B", FLR, 6.292% ((SOFR - 1mo. + 0.11448%) + 1.85%), 3/15/2038 (n) | &nbsp;&nbsp;13226000 | &nbsp;&nbsp;&nbsp;&nbsp; **13166351** |
| UBS Commercial Mortgage Trust, 2017-C1, "XA", 1.159%, 11/15/2050 (i) | &nbsp;&nbsp;22781189 | &nbsp;&nbsp;&nbsp;&nbsp; **422541** |
| UBS Commercial Mortgage Trust, 2018-C14, "XA", 1.051%, 12/15/2051 (i) | &nbsp;&nbsp;19605287 | &nbsp;&nbsp;&nbsp;&nbsp; **504413** |
| Verus Securitization Trust, 2024-3, "A2", 6.642%, 4/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3855131 | &nbsp;&nbsp;&nbsp;&nbsp; **3896820** |
| Verus Securitization Trust, 2024-6, "A1", 5.799%, 7/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3821902 | &nbsp;&nbsp;&nbsp;&nbsp; **3837426** |
| Virginia Power Fuel Securitization LLC, 5.088%, 5/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;1973283 | &nbsp;&nbsp;&nbsp;&nbsp; **1989740** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued |
| Wells Fargo Commercial Mortgage Trust, 2021-C61, "XA", 1.467%, 11/15/2054 (i) | $&nbsp;&nbsp;44132939 | &nbsp;&nbsp;$2636334 |
|  |  | &nbsp;&nbsp; **$702702889** |
| Automotive – 1.8% | Automotive – 1.8% | Automotive – 1.8% |
| Ford Motor Credit Co. LLC, 5.8%, 3/05/2027 | $&nbsp;&nbsp;15983000 | &nbsp;&nbsp;$15890143 |
| Ford Motor Credit Co. LLC, 5.875%, 11/07/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5980000 | &nbsp;&nbsp;&nbsp;&nbsp; **5885175** |
| Ford Motor Credit Co. LLC, 6.532%, 3/19/2032 | &nbsp;&nbsp;&nbsp;&nbsp;7225000 | &nbsp;&nbsp;&nbsp;&nbsp; **7138328** |
| LKQ Corp., 5.75%, 6/15/2028 | &nbsp;&nbsp;13189000 | &nbsp;&nbsp;&nbsp;&nbsp; **13467219** |
| Stellantis Finance US, Inc., 1.711%, 1/29/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6594000 | &nbsp;&nbsp;&nbsp;&nbsp; **6229308** |
| Volkswagen Group of America Finance LLC, 3.35%, 5/13/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7295000 | &nbsp;&nbsp;&nbsp;&nbsp; **7291584** |
|  |  | &nbsp;&nbsp; **$55901757** |
| Broadcasting – 0.2% | Broadcasting – 0.2% | Broadcasting – 0.2% |
| WarnerMedia Holdings, Inc., 3.755%, 3/15/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;6864000 | &nbsp;&nbsp;$6679683 |
| Brokerage & Asset Managers – 1.9% | Brokerage & Asset Managers – 1.9% | Brokerage & Asset Managers – 1.9% |
| Brookfield Finance, Inc., 3.9%, 1/25/2028 | $&nbsp;&nbsp;13949000 | &nbsp;&nbsp;$13722779 |
| Charles Schwab Corp., 5.875%, 8/24/2026 | &nbsp;&nbsp;&nbsp;&nbsp;8383000 | &nbsp;&nbsp;&nbsp;&nbsp; **8545808** |
| Charles Schwab Corp., 5.643% to 5/19/2028, FLR (SOFR - 1 day + 2.210%) to 5/19/2029 | &nbsp;&nbsp;12511000 | &nbsp;&nbsp;&nbsp;&nbsp; **12974606** |
| LPL Holdings, Inc., 5.7%, 5/20/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8079000 | &nbsp;&nbsp;&nbsp;&nbsp; **8234510** |
| LPL Holdings, Inc., 4.625%, 11/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4741000 | &nbsp;&nbsp;&nbsp;&nbsp; **4719081** |
| LPL Holdings, Inc., 6.75%, 11/17/2028 | &nbsp;&nbsp;&nbsp;&nbsp;3723000 | &nbsp;&nbsp;&nbsp;&nbsp; **3957535** |
| LPL Holdings, Inc., 4%, 3/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7489000 | &nbsp;&nbsp;&nbsp;&nbsp; **7208764** |
|  |  | &nbsp;&nbsp; **$59363083** |
| Business Services – 0.6% | Business Services – 0.6% | Business Services – 0.6% |
| Global Payments, Inc., 1.2%, 3/01/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;8692000 | &nbsp;&nbsp;$8418930 |
| Paychex, Inc., 5.1%, 4/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;3486000 | &nbsp;&nbsp;&nbsp;&nbsp; **3538149** |
| Tencent Holdings Ltd., 1.81%, 1/26/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7043000 | &nbsp;&nbsp;&nbsp;&nbsp; **6915754** |
|  |  | &nbsp;&nbsp; **$18872833** |
| Cable TV – 1.3% | Cable TV – 1.3% | Cable TV – 1.3% |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 6.15%, 11/10/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;7410000 | &nbsp;&nbsp;$7553130 |
| Cox Communications, Inc., 5.45%, 9/15/2028 (n) | &nbsp;&nbsp;13143000 | &nbsp;&nbsp;&nbsp;&nbsp; **13547131** |
| Videotron Ltd., 5.125%, 4/15/2027 (n) | &nbsp;&nbsp;11614000 | &nbsp;&nbsp;&nbsp;&nbsp; **11602568** |
| Videotron Ltd., 3.625%, 6/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9840000 | &nbsp;&nbsp;&nbsp;&nbsp; **9311499** |
|  |  | &nbsp;&nbsp; **$42014328** |
| Computer Software - Systems – 0.1% | Computer Software - Systems – 0.1% | Computer Software - Systems – 0.1% |
| VMware, Inc., 1.4%, 8/15/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;4186000 | &nbsp;&nbsp;$4017968 |
| Conglomerates – 0.6% | Conglomerates – 0.6% | Conglomerates – 0.6% |
| Regal Rexnord Corp., 6.05%, 2/15/2026 | $&nbsp;&nbsp;11730000 | &nbsp;&nbsp;$11797375 |
| Regal Rexnord Corp., 6.05%, 4/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;7094000 | &nbsp;&nbsp;&nbsp;&nbsp; **7276773** |
|  |  | &nbsp;&nbsp; **$19074148** |
| Consumer Services – 1.2% | Consumer Services – 1.2% | Consumer Services – 1.2% |
| CBRE Services, Inc., 5.5%, 4/01/2029 | $&nbsp;&nbsp;10000000 | &nbsp;&nbsp;$10260248 |
| CBRE Services, Inc., 4.8%, 6/15/2030 (w) | &nbsp;&nbsp;&nbsp;&nbsp;2920000 | &nbsp;&nbsp;&nbsp;&nbsp; **2903683** |
| Meituan, 4.5%, 4/02/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7022000 | &nbsp;&nbsp;&nbsp;&nbsp; **6994970** |
| Meituan, 4.625%, 10/02/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3769000 | &nbsp;&nbsp;&nbsp;&nbsp; **3748514** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Consumer Services – continued | Consumer Services – continued | Consumer Services – continued |
| Rentokil Terminix LLC, 5%, 4/28/2030 (n) | $&nbsp;&nbsp;15160000 | &nbsp;&nbsp;$15131333 |
|  |  | &nbsp;&nbsp; **$39038748** |
| Containers – 0.6% | Containers – 0.6% | Containers – 0.6% |
| Berry Global, Inc., 1.57%, 1/15/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;7474000 | &nbsp;&nbsp;$7287441 |
| Berry Global, Inc., 1.65%, 1/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;9789000 | &nbsp;&nbsp;&nbsp;&nbsp; **9287633** |
| Berry Global, Inc., 5.5%, 4/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;1938000 | &nbsp;&nbsp;&nbsp;&nbsp; **1981642** |
|  |  | &nbsp;&nbsp; **$18556716** |
| Electrical Equipment – 0.8% | Electrical Equipment – 0.8% | Electrical Equipment – 0.8% |
| Arrow Electronics, Inc., 5.15%, 8/21/2029 | $&nbsp;&nbsp;10290000 | &nbsp;&nbsp;$10374204 |
| Arrow Electronics, Inc., 2.95%, 2/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;5848000 | &nbsp;&nbsp;&nbsp;&nbsp; **5013523** |
| Molex Electronic Technologies LLC, 4.75%, 4/30/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9070000 | &nbsp;&nbsp;&nbsp;&nbsp; **9148178** |
|  |  | &nbsp;&nbsp; **$24535905** |
| Electronics – 1.1% | Electronics – 1.1% | Electronics – 1.1% |
| Broadcom, Inc., 5.05%, 7/12/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;5810000 | &nbsp;&nbsp;$5902310 |
| Broadcom, Inc., 4.15%, 2/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;5778000 | &nbsp;&nbsp;&nbsp;&nbsp; **5756309** |
| Broadcom, Inc., 5.05%, 7/12/2029 | &nbsp;&nbsp;&nbsp;&nbsp;3276000 | &nbsp;&nbsp;&nbsp;&nbsp; **3340137** |
| Broadcom, Inc., 4.35%, 2/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;8255000 | &nbsp;&nbsp;&nbsp;&nbsp; **8154967** |
| SK hynix, Inc., 6.25%, 1/17/2026 (n) | &nbsp;&nbsp;12203000 | &nbsp;&nbsp;&nbsp;&nbsp; **12320759** |
|  |  | &nbsp;&nbsp; **$35474482** |
| Energy - Independent – 1.8% | Energy - Independent – 1.8% | Energy - Independent – 1.8% |
| Diamondback Energy, Inc., 5.2%, 4/18/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;4369000 | &nbsp;&nbsp;$4430421 |
| Diamondback Energy, Inc., 5.15%, 1/30/2030 | &nbsp;&nbsp;&nbsp;&nbsp;4369000 | &nbsp;&nbsp;&nbsp;&nbsp; **4433528** |
| EQT Corp., 5.7%, 4/01/2028 | &nbsp;&nbsp;10221000 | &nbsp;&nbsp;&nbsp;&nbsp; **10493915** |
| Occidental Petroleum Corp., 5%, 8/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;4506000 | &nbsp;&nbsp;&nbsp;&nbsp; **4503177** |
| Occidental Petroleum Corp., 5.2%, 8/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;6255000 | &nbsp;&nbsp;&nbsp;&nbsp; **6162535** |
| Occidental Petroleum Corp., 6.625%, 9/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;5675000 | &nbsp;&nbsp;&nbsp;&nbsp; **5869579** |
| Pioneer Natural Resources Co., 1.9%, 8/15/2030 | &nbsp;&nbsp;17080000 | &nbsp;&nbsp;&nbsp;&nbsp; **14997048** |
| Pioneer Natural Resources Co., 2.15%, 1/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4387454** |
|  |  | &nbsp;&nbsp; **$55277657** |
| Financial Institutions – 1.3% | Financial Institutions – 1.3% | Financial Institutions – 1.3% |
| AerCap Ireland Capital DAC/AerCap Global Aviation Trust, 6.45%, 4/15/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;5009000 | &nbsp;&nbsp;$5164019 |
| Avolon Holdings Funding Ltd., 5.5%, 1/15/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3134000 | &nbsp;&nbsp;&nbsp;&nbsp; **3137866** |
| Avolon Holdings Funding Ltd., 4.25%, 4/15/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2797000 | &nbsp;&nbsp;&nbsp;&nbsp; **2771821** |
| Avolon Holdings Funding Ltd., 2.528%, 11/18/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6154000 | &nbsp;&nbsp;&nbsp;&nbsp; **5777877** |
| Avolon Holdings Funding Ltd., 2.75%, 2/21/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4709000 | &nbsp;&nbsp;&nbsp;&nbsp; **4413822** |
| Avolon Holdings Funding Ltd., 6.375%, 5/04/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4885000 | &nbsp;&nbsp;&nbsp;&nbsp; **5037086** |
| SMBC Aviation Capital Finance DAC, 5.3%, 4/03/2029 (n) | &nbsp;&nbsp;14900000 | &nbsp;&nbsp;&nbsp;&nbsp; **15086890** |
|  |  | &nbsp;&nbsp; **$41389381** |
| Food & Beverages – 2.6% | Food & Beverages – 2.6% | Food & Beverages – 2.6% |
| Bacardi Ltd., 4.7%, 5/15/2028 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;3022000 | &nbsp;&nbsp;$3020070 |
| Bacardi-Martini B.V., 5.25%, 1/15/2029 (n) | &nbsp;&nbsp;15221000 | &nbsp;&nbsp;&nbsp;&nbsp; **15416759** |
| Constellation Brands, Inc., 4.8%, 5/01/2030 (w) | &nbsp;&nbsp;&nbsp;&nbsp;7961000 | &nbsp;&nbsp;&nbsp;&nbsp; **7974985** |
| JBS USA Lux S.A./JBS USA Food Co./JBS USA Finance, Inc., 3%, 2/02/2029 | &nbsp;&nbsp;16032000 | &nbsp;&nbsp;&nbsp;&nbsp; **15072089** |
| JDE Peet's N.V., 1.375%, 1/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8356000 | &nbsp;&nbsp;&nbsp;&nbsp; **7858229** |
| Mars, Inc., 4.6%, 3/01/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7205000 | &nbsp;&nbsp;&nbsp;&nbsp; **7282691** |
| Mars, Inc., 4.8%, 3/01/2030 (n) | &nbsp;&nbsp;15119000 | &nbsp;&nbsp;&nbsp;&nbsp; **15303557** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Food & Beverages – continued | Food & Beverages – continued | Food & Beverages – continued |
| Suntory Holdings Ltd., 5.124%, 6/11/2029 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;8773000 | &nbsp;&nbsp;$8969311 |
|  |  | &nbsp;&nbsp; **$80897691** |
| Gaming & Lodging – 1.3% | Gaming & Lodging – 1.3% | Gaming & Lodging – 1.3% |
| GLP Capital LP/GLP Financing II, Inc., 5.375%, 4/15/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;1551000 | &nbsp;&nbsp;$1546830 |
| Hyatt Hotels Corp., 5.75%, 1/30/2027 | &nbsp;&nbsp;&nbsp;&nbsp;5367000 | &nbsp;&nbsp;&nbsp;&nbsp; **5458570** |
| Las Vegas Sands Corp., 5.9%, 6/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;3788000 | &nbsp;&nbsp;&nbsp;&nbsp; **3836857** |
| Las Vegas Sands Corp., 5.625%, 6/15/2028 (w) | &nbsp;&nbsp;&nbsp;&nbsp;6390000 | &nbsp;&nbsp;&nbsp;&nbsp; **6404664** |
| Marriott International, Inc., 4.9%, 4/15/2029 | &nbsp;&nbsp;15057000 | &nbsp;&nbsp;&nbsp;&nbsp; **15190095** |
| Sands China Ltd., 3.8%, 1/08/2026 | &nbsp;&nbsp;&nbsp;&nbsp;8802000 | &nbsp;&nbsp;&nbsp;&nbsp; **8696865** |
|  |  | &nbsp;&nbsp; **$41133881** |
| Industrial – 0.1% | Industrial – 0.1% | Industrial – 0.1% |
| Booz Allen Hamilton, Inc., 4%, 7/01/2029 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;1809000 | &nbsp;&nbsp;$1722725 |
| Howard University, Washington D.C., AGM, 2.516%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;578000 | &nbsp;&nbsp;&nbsp;&nbsp; **569988** |
|  |  | &nbsp;&nbsp; **$2292713** |
| Insurance – 1.6% | Insurance – 1.6% | Insurance – 1.6% |
| Corebridge Financial, Inc., 3.65%, 4/05/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;8031000 | &nbsp;&nbsp;$7912799 |
| Corebridge Global Funding, 5.2%, 1/12/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5068000 | &nbsp;&nbsp;&nbsp;&nbsp; **5170213** |
| Equitable Financial Life Insurance Co., 1.4%, 7/07/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4044000 | &nbsp;&nbsp;&nbsp;&nbsp; **4019020** |
| Equitable Financial Life Insurance Co., 5.5%, 12/02/2025 (n) | &nbsp;&nbsp;15338000 | &nbsp;&nbsp;&nbsp;&nbsp; **15421662** |
| Sammons Financial Group Global Funding, 5.05%, 1/10/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4095000 | &nbsp;&nbsp;&nbsp;&nbsp; **4163384** |
| Sammons Financial Group Global Funding, 5.1%, 12/10/2029 (n) | &nbsp;&nbsp;14541000 | &nbsp;&nbsp;&nbsp;&nbsp; **14813789** |
|  |  | &nbsp;&nbsp; **$51500867** |
| Insurance - Health – 0.4% | Insurance - Health – 0.4% | Insurance - Health – 0.4% |
| Elevance Health, Inc., 4.5%, 10/30/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;5855000 | &nbsp;&nbsp;$5870069 |
| Elevance Health, Inc., 4.75%, 2/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;4976000 | &nbsp;&nbsp;&nbsp;&nbsp; **5017903** |
|  |  | &nbsp;&nbsp; **$10887972** |
| Insurance - Property & Casualty – 0.8% | Insurance - Property & Casualty – 0.8% | Insurance - Property & Casualty – 0.8% |
| Ambac Assurance Corp., 5.1%, 6/07/2172 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23513 | &nbsp;&nbsp;$31860 |
| Arthur J. Gallagher & Co., 4.6%, 12/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;5819000 | &nbsp;&nbsp;&nbsp;&nbsp; **5864224** |
| Arthur J. Gallagher & Co., 4.85%, 12/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5819000 | &nbsp;&nbsp;&nbsp;&nbsp; **5891015** |
| Marsh & McLennan Cos., Inc., 4.55%, 11/08/2027 | &nbsp;&nbsp;&nbsp;&nbsp;5863000 | &nbsp;&nbsp;&nbsp;&nbsp; **5924011** |
| Marsh & McLennan Cos., Inc., 4.65%, 3/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;5863000 | &nbsp;&nbsp;&nbsp;&nbsp; **5912550** |
|  |  | &nbsp;&nbsp; **$23623660** |
| International Market Quasi-Sovereign – 0.3% | International Market Quasi-Sovereign – 0.3% | International Market Quasi-Sovereign – 0.3% |
| NBN Co. Ltd. (Commonwealth of Australia), 5.75%, 10/06/2028 (n) | $&nbsp;&nbsp;10003000 | &nbsp;&nbsp;$10443379 |
| Machinery & Tools – 0.5% | Machinery & Tools – 0.5% | Machinery & Tools – 0.5% |
| AGCO Corp., 5.45%, 3/21/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;5782000 | &nbsp;&nbsp;$5832187 |
| Ashtead Capital, Inc., 4.25%, 11/01/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6004000 | &nbsp;&nbsp;&nbsp;&nbsp; **5796767** |
| CNH Industrial Capital LLC, 1.875%, 1/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;2591000 | &nbsp;&nbsp;&nbsp;&nbsp; **2538529** |
|  |  | &nbsp;&nbsp; **$14167483** |
| Major Banks – 10.7% | Major Banks – 10.7% | Major Banks – 10.7% |
| Bank of America Corp., 4.45%, 3/03/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;6999000 | &nbsp;&nbsp;$6991916 |
| Bank of America Corp., 4.25%, 10/22/2026 | &nbsp;&nbsp;&nbsp;&nbsp;4033000 | &nbsp;&nbsp;&nbsp;&nbsp; **4029214** |
| Bank of America Corp., 1.734% to 7/22/2026, FLR (SOFR - 1 day + 0.96%) to 7/22/2027 | &nbsp;&nbsp;22751000 | &nbsp;&nbsp;&nbsp;&nbsp; **21995593** |
| Bank of America Corp., 4.183%, 11/25/2027 | &nbsp;&nbsp;&nbsp;&nbsp;6721000 | &nbsp;&nbsp;&nbsp;&nbsp; **6685539** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Major Banks – continued | Major Banks – continued | Major Banks – continued |
| Barclays PLC, 2.852% to 5/07/2025, FLR (SOFR - 3mo. + 2.71361%) to 5/07/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;2564000 | &nbsp;&nbsp;$2562758 |
| Barclays PLC, 2.279% to 11/24/2026, FLR (CMT - 1yr. + 1.05%) to 11/24/2027 | &nbsp;&nbsp;10326000 | &nbsp;&nbsp;&nbsp;&nbsp; **9948230** |
| BNP Paribas S.A., 2.591% to 1/20/2027, FLR (SOFR - 1 day + 1.228%) to 1/20/2028 (n) | &nbsp;&nbsp;12560000 | &nbsp;&nbsp;&nbsp;&nbsp; **12132615** |
| Capital One Financial Corp., 7.149% to 10/29/2026, FLR (SOFR - 1 day + 2.44%) to 10/29/2027 | &nbsp;&nbsp;&nbsp;&nbsp;1650000 | &nbsp;&nbsp;&nbsp;&nbsp; **1707340** |
| Capital One Financial Corp., 5.7% to 2/01/2029, FLR (SOFR - 1 day + 1.905%) to 2/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;2193000 | &nbsp;&nbsp;&nbsp;&nbsp; **2246360** |
| Credit Agricole S.A., 1.907% to 6/16/2025, FLR (SOFR - 1 day + 1.676%) to 6/16/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2080000 | &nbsp;&nbsp;&nbsp;&nbsp; **2072281** |
| Danske Bank A.S., 5.705% to 3/01/2029, FLR (CMT - 1yr. + 1.4%) to 3/01/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3643000 | &nbsp;&nbsp;&nbsp;&nbsp; **3757595** |
| Deutsche Bank AG, 7.146% to 7/13/2026, FLR (SOFR - 1 day + 2.52%) to 7/13/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8154000 | &nbsp;&nbsp;&nbsp;&nbsp; **8365678** |
| Deutsche Bank AG, 2.311% to 11/16/2026, FLR (SOFR - 1 day + 1.219%) to 11/16/2027 | &nbsp;&nbsp;&nbsp;&nbsp;5117000 | &nbsp;&nbsp;&nbsp;&nbsp; **4927074** |
| Deutsche Bank AG, 6.72% to 1/18/2028, FLR (SOFR - 1 day + 3.18%) to 1/18/2029 | &nbsp;&nbsp;&nbsp;&nbsp;6180000 | &nbsp;&nbsp;&nbsp;&nbsp; **6480217** |
| Goldman Sachs Group, Inc., 1.093% to 12/09/2025, FLR (SOFR - 1 day + 0.789%) to 12/09/2026 | &nbsp;&nbsp;&nbsp;&nbsp;4637000 | &nbsp;&nbsp;&nbsp;&nbsp; **4538456** |
| Goldman Sachs Group, Inc., 1.948% to 10/21/2026, FLR (SOFR - 1 day + 0.913%) to 10/21/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8452000 | &nbsp;&nbsp;&nbsp;&nbsp; **8141316** |
| HSBC Holdings PLC, 2.099% to 6/04/2025, FLR (SOFR - 1 day + 1.929%) to 6/04/2026 | &nbsp;&nbsp;&nbsp;&nbsp;4303000 | &nbsp;&nbsp;&nbsp;&nbsp; **4291481** |
| HSBC Holdings PLC, 7.336% to 11/03/2025, FLR (SOFR - 1 day + 3.03%) to 11/03/2026 | &nbsp;&nbsp;&nbsp;&nbsp;4354000 | &nbsp;&nbsp;&nbsp;&nbsp; **4409291** |
| HSBC Holdings PLC, 4.899% to 3/03/2028, FLR (SOFR - 1 day + 1.03%) to 3/03/2029 | &nbsp;&nbsp;14973000 | &nbsp;&nbsp;&nbsp;&nbsp; **15052935** |
| Huntington Bancshares, Inc., 4.443% to 8/04/2027, FLR (SOFR - 1 day + 1.970%) to 8/04/2028 | &nbsp;&nbsp;&nbsp;&nbsp;1309000 | &nbsp;&nbsp;&nbsp;&nbsp; **1300723** |
| Huntington Bancshares, Inc., 5.272% to 1/15/2030, FLR (SOFR - 1 day + 1.276%) to 1/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;4130000 | &nbsp;&nbsp;&nbsp;&nbsp; **4161023** |
| JPMorgan Chase & Co., 1.04% to 2/04/2026, FLR (SOFR - 1 day + 0.695%) to 2/04/2027 | &nbsp;&nbsp;&nbsp;&nbsp;6715000 | &nbsp;&nbsp;&nbsp;&nbsp; **6541954** |
| JPMorgan Chase & Co., 1.578% to 4/22/2026, FLR (SOFR - 1 day + 0.885%) to 4/22/2027 | &nbsp;&nbsp;&nbsp;&nbsp;5687000 | &nbsp;&nbsp;&nbsp;&nbsp; **5528502** |
| JPMorgan Chase & Co., 1.47% to 9/22/2026, FLR (SOFR - 1 day + 0.765%) to 9/22/2027 | &nbsp;&nbsp;10796000 | &nbsp;&nbsp;&nbsp;&nbsp; **10362481** |
| JPMorgan Chase & Co., 5.04% to 1/23/2027, FLR (SOFR - 1 day + 1.19%) to 1/23/2028 | &nbsp;&nbsp;17469000 | &nbsp;&nbsp;&nbsp;&nbsp; **17637848** |
| JPMorgan Chase & Co., 5.571% to 4/22/2027, FLR (SOFR - 1 day + 0.93%) to 4/22/2028 | &nbsp;&nbsp;&nbsp;&nbsp;9928000 | &nbsp;&nbsp;&nbsp;&nbsp; **10152989** |
| Mitsubishi UFJ Financial Group, Inc., 5.159%, 4/24/2031 | &nbsp;&nbsp;&nbsp;&nbsp;3779000 | &nbsp;&nbsp;&nbsp;&nbsp; **3848311** |
| Morgan Stanley, 4.35%, 9/08/2026 | &nbsp;&nbsp;10218000 | &nbsp;&nbsp;&nbsp;&nbsp; **10200518** |
| Morgan Stanley, 3.625%, 1/20/2027 | &nbsp;&nbsp;&nbsp;&nbsp;6576000 | &nbsp;&nbsp;&nbsp;&nbsp; **6515096** |
| Morgan Stanley, 3.95%, 4/23/2027 | &nbsp;&nbsp;&nbsp;&nbsp;2363000 | &nbsp;&nbsp;&nbsp;&nbsp; **2344110** |
| Morgan Stanley, 1.512% to 7/20/2026, FLR (SOFR - 1 day + 0.858%) to 7/20/2027 | &nbsp;&nbsp;18244000 | &nbsp;&nbsp;&nbsp;&nbsp; **17613862** |
| Morgan Stanley, 4.994% to 4/12/2028, FLR (SOFR - 1 day + 1.38%) to 4/12/2029 | &nbsp;&nbsp;&nbsp;&nbsp;7258000 | &nbsp;&nbsp;&nbsp;&nbsp; **7357007** |
| Nationwide Building Society, 2.972% to 2/16/2027, FLR (SOFR - 1 day + 1.29%) to 2/16/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9998000 | &nbsp;&nbsp;&nbsp;&nbsp; **9732653** |
| PNC Financial Services Group, Inc., 5.102% to 7/23/2026, FLR (SOFR - 1 day + 0.796%) to 7/23/2027 | &nbsp;&nbsp;12826000 | &nbsp;&nbsp;&nbsp;&nbsp; **12895142** |
| PNC Financial Services Group, Inc., 5.354% to 12/02/2027, FLR (SOFR - 1 day + 1.62%) to 12/02/2028 | &nbsp;&nbsp;16367000 | &nbsp;&nbsp;&nbsp;&nbsp; **16726818** |
| Standard Chartered PLC, 6.17% to 1/09/2026, FLR (CMT - 1yr. + 2.05%) to 1/09/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4409000 | &nbsp;&nbsp;&nbsp;&nbsp; **4447805** |
| Sumitomo Mitsui Financial Group, Inc., 1.474%, 7/08/2025 | &nbsp;&nbsp;&nbsp;&nbsp;7574000 | &nbsp;&nbsp;&nbsp;&nbsp; **7530727** |
| Sumitomo Mitsui Financial Group, Inc., 2.174%, 1/14/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8414000 | &nbsp;&nbsp;&nbsp;&nbsp; **8118028** |
| UBS Group AG, 5.711% to 1/12/2026, FLR (CMT - 1yr. + 1.55%) to 1/12/2027 (n) | &nbsp;&nbsp;10884000 | &nbsp;&nbsp;&nbsp;&nbsp; **10955102** |
| UBS Group AG, 4.703% to 8/05/2026, FLR (CMT - 1yr. + 2.05%) to 8/05/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7082000 | &nbsp;&nbsp;&nbsp;&nbsp; **7080680** |
| UBS Group AG, 9.25% to 11/13/2028, FLR (CMT - 5yr. + 4.745%) to 5/13/2172 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2369000 | &nbsp;&nbsp;&nbsp;&nbsp; **2559685** |
| UniCredit S.p.A., 2.569% to 9/22/2025, FLR (CMT - 1yr. + 2.3%) to 9/22/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9390000 | &nbsp;&nbsp;&nbsp;&nbsp; **9302564** |
| Wells Fargo & Co., 3.526% to 3/24/2027, FLR (SOFR - 1 day + 1.51%) to 3/24/2028 | &nbsp;&nbsp;13228000 | &nbsp;&nbsp;&nbsp;&nbsp; **13007414** |
|  |  | &nbsp;&nbsp; **$336256931** |
| Medical & Health Technology & Services – 0.2% | Medical & Health Technology & Services – 0.2% | Medical & Health Technology & Services – 0.2% |
| IQVIA, Inc., 5.7%, 5/15/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;4073000 | &nbsp;&nbsp;$4144522 |
| IQVIA, Inc., 6.25%, 2/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;3009000 | &nbsp;&nbsp;&nbsp;&nbsp; **3126595** |
|  |  | &nbsp;&nbsp; **$7271117** |
| Metals & Mining – 1.7% | Metals & Mining – 1.7% | Metals & Mining – 1.7% |
| Anglo American Capital PLC, 4.75%, 4/10/2027 (n) | $&nbsp;&nbsp;12924000 | &nbsp;&nbsp;$12963656 |
| Glencore Funding LLC, 1.625%, 9/01/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7900000 | &nbsp;&nbsp;&nbsp;&nbsp; **7812579** |
| Glencore Funding LLC, 1.625%, 4/27/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8268000 | &nbsp;&nbsp;&nbsp;&nbsp; **8021745** |
| Glencore Funding LLC, 5.186%, 4/01/2030 (n) | &nbsp;&nbsp;12027000 | &nbsp;&nbsp;&nbsp;&nbsp; **12177301** |
| Rio Tinto Finance (USA) PLC, 4.5%, 3/14/2028 | &nbsp;&nbsp;&nbsp;&nbsp;6009000 | &nbsp;&nbsp;&nbsp;&nbsp; **6060262** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Metals & Mining – continued | Metals & Mining – continued | Metals & Mining – continued |
| Rio Tinto Finance (USA) PLC, 4.875%, 3/14/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;6857000 | &nbsp;&nbsp;$6960982 |
|  |  | &nbsp;&nbsp; **$53996525** |
| Midstream – 1.7% | Midstream – 1.7% | Midstream – 1.7% |
| Columbia Pipelines Holdings Co., 6.042%, 8/15/2028 (n) | $&nbsp;&nbsp;11292000 | &nbsp;&nbsp;$11643488 |
| DCP Midstream Operating LP, 5.625%, 7/15/2027 | &nbsp;&nbsp;13560000 | &nbsp;&nbsp;&nbsp;&nbsp; **13794749** |
| Enbridge, Inc., 5.25%, 4/05/2027 | &nbsp;&nbsp;&nbsp;&nbsp;9424000 | &nbsp;&nbsp;&nbsp;&nbsp; **9563708** |
| Energy Transfer LP, 2.9%, 5/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;3676000 | &nbsp;&nbsp;&nbsp;&nbsp; **3673084** |
| Energy Transfer LP, 5.55%, 2/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;4232000 | &nbsp;&nbsp;&nbsp;&nbsp; **4337239** |
| Plains All American Pipeline LP, 4.65%, 10/15/2025 | &nbsp;&nbsp;11313000 | &nbsp;&nbsp;&nbsp;&nbsp; **11295008** |
|  |  | &nbsp;&nbsp; **$54307276** |
| Mortgage-Backed – 0.5% | Mortgage-Backed – 0.5% |  |
| Fannie Mae, 3%, 12/01/2031 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;655796 | &nbsp;&nbsp;$640344 |
| Fannie Mae, 6.48%, 3/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26347 | &nbsp;&nbsp;&nbsp;&nbsp; **26753** |
| Fannie Mae, 7.375%, 5/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;55807 | &nbsp;&nbsp;&nbsp;&nbsp; **56732** |
| Fannie Mae, 5.352%, 2/25/2045 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2664735 | &nbsp;&nbsp;&nbsp;&nbsp; **2652254** |
| Freddie Mac, 4.968%, 7/25/2029 | &nbsp;&nbsp;&nbsp;&nbsp;3224117 | &nbsp;&nbsp;&nbsp;&nbsp; **3217598** |
| Freddie Mac, 1.689%, 4/25/2030 (i) | &nbsp;&nbsp;28593267 | &nbsp;&nbsp;&nbsp;&nbsp; **1801779** |
| Freddie Mac, 3%, 4/15/2033 - 6/15/2045 | &nbsp;&nbsp;&nbsp;&nbsp;6890408 | &nbsp;&nbsp;&nbsp;&nbsp; **6654897** |
| Freddie Mac, 2%, 7/15/2042 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;880871 | &nbsp;&nbsp;&nbsp;&nbsp; **826475** |
| Ginnie Mae, 4.625%, 7/20/2032 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19077 | &nbsp;&nbsp;&nbsp;&nbsp; **19258** |
|  |  | &nbsp;&nbsp; **$15896090** |
| Municipals – 0.4% | Municipals – 0.4% | Municipals – 0.4% |
| Kentucky Higher Education Student Loan Corp. Rev., Taxable, "A-2", 5.949%, 6/01/2037 | $&nbsp;&nbsp;&nbsp;&nbsp;9440000 | &nbsp;&nbsp;$9488611 |
| Massachusetts Educational Financing Authority, Education Loan Rev., Taxable, "A", 2.306%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;790000 | &nbsp;&nbsp;&nbsp;&nbsp; **787151** |
| Massachusetts Educational Financing Authority, Education Loan Rev., Taxable, "A", 2.562%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;1005000 | &nbsp;&nbsp;&nbsp;&nbsp; **984117** |
| Michigan Finance Authority Tobacco Settlement Asset-Backed Rev., Taxable (2006 Sold Tobacco Receipts), "A-1", 2.326%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;142502 | &nbsp;&nbsp;&nbsp;&nbsp; **141142** |
|  |  | &nbsp;&nbsp; **$11401021** |
| Oil Services – 0.3% | Oil Services – 0.3% | Oil Services – 0.3% |
| Schlumberger Holdings Corp., 5%, 5/29/2027 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;5832000 | &nbsp;&nbsp;$5910374 |
| Schlumberger Holdings Corp., 5%, 11/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4083000 | &nbsp;&nbsp;&nbsp;&nbsp; **4145774** |
|  |  | &nbsp;&nbsp; **$10056148** |
| Oils – 0.2% | Oils – 0.2% | Oils – 0.2% |
| Marathon Petroleum Corp., 5.15%, 3/01/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;5666000 | &nbsp;&nbsp;$5701990 |
| Other Banks & Diversified Financials – 3.4% | Other Banks & Diversified Financials – 3.4% | Other Banks & Diversified Financials – 3.4% |
| AIB Group PLC, 7.583% to 10/14/2025, FLR (SOFR - 1 day + 3.456%) to 10/14/2026 (n) | $&nbsp;&nbsp;13730000 | &nbsp;&nbsp;$13892846 |
| AIB Group PLC, 6.608% to 9/13/2028, FLR (SOFR - 1 day + 2.33%) to 9/13/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2036000 | &nbsp;&nbsp;&nbsp;&nbsp; **2152817** |
| American Express Co., 4.731% to 4/25/2028, FLR (SOFR - 1 day + 1.26%) to 4/25/2029 | &nbsp;&nbsp;13906000 | &nbsp;&nbsp;&nbsp;&nbsp; **14034236** |
| Banque Federative du Credit Mutuel S.A., 5.896%, 7/13/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7978000 | &nbsp;&nbsp;&nbsp;&nbsp; **8107527** |
| BPCE S.A., 5.281%, 5/30/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8749000 | &nbsp;&nbsp;&nbsp;&nbsp; **8968036** |
| CaixaBank S.A., 5.673% to 3/15/2029, FLR (SOFR - 1 day + 1.78%) to 3/15/2030 (n) | &nbsp;&nbsp;12067000 | &nbsp;&nbsp;&nbsp;&nbsp; **12443531** |
| Citizens Financial Group, Inc., 5.841% to 1/23/2029, FLR (SOFR - 1 day + 2.01%) to 1/23/2030 | &nbsp;&nbsp;&nbsp;&nbsp;9750000 | &nbsp;&nbsp;&nbsp;&nbsp; **9980627** |
| First Citizens Bancshare, Inc., 5.231% to 3/12/2030, FLR (SOFR - 1 day + 1.41%) to 3/12/2031 | &nbsp;&nbsp;&nbsp;&nbsp;4793000 | &nbsp;&nbsp;&nbsp;&nbsp; **4780185** |
| M&T Bank Corp., 4.833% to 1/16/2028, FLR (SOFR - 1 day + 0.93%) to 1/16/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5819000 | &nbsp;&nbsp;&nbsp;&nbsp; **5831551** |
| M&T Bank Corp., 7.413% to 10/30/2028, FLR (SOFR - 1 day + 2.80%) to 10/30/2029 | &nbsp;&nbsp;&nbsp;&nbsp;3652000 | &nbsp;&nbsp;&nbsp;&nbsp; **3928608** |
| Macquarie Group Ltd., 1.34% to 1/12/2026, FLR (SOFR - 1 day + 1.069%) to 1/12/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6707000 | &nbsp;&nbsp;&nbsp;&nbsp; **6553831** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Other Banks & Diversified Financials – continued | Other Banks & Diversified Financials – continued | Other Banks & Diversified Financials – continued |
| Truist Financial Corp., 5.435% to 1/24/2029, FLR (SOFR - 1 day + 1.62%) to 1/24/2030 | $&nbsp;&nbsp;16559000 | &nbsp;&nbsp;$16918878 |
|  |  | &nbsp;&nbsp; **$107592673** |
| Pharmaceuticals – 0.3% | Pharmaceuticals – 0.3% | Pharmaceuticals – 0.3% |
| Amgen, Inc., 5.507%, 3/02/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;2748000 | &nbsp;&nbsp;$2748607 |
| Bayer US Finance LLC, 6.125%, 11/21/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2950000 | &nbsp;&nbsp;&nbsp;&nbsp; **3002881** |
| Bayer US Finance LLC, 6.25%, 1/21/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2837000 | &nbsp;&nbsp;&nbsp;&nbsp; **2957327** |
|  |  | &nbsp;&nbsp; **$8708815** |
| Printing & Publishing – 0.3% | Printing & Publishing – 0.3% | Printing & Publishing – 0.3% |
| News Corp., 3.875%, 5/15/2029 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;8881000 | &nbsp;&nbsp;$8355827 |
| Real Estate - Office – 0.5% | Real Estate - Office – 0.5% | Real Estate - Office – 0.5% |
| Corporate Office Property LP, REIT, 2.25%, 3/15/2026 | $&nbsp;&nbsp;13184000 | &nbsp;&nbsp;$12863008 |
| Corporate Office Property LP, REIT, 2%, 1/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;2060000 | &nbsp;&nbsp;&nbsp;&nbsp; **1843632** |
|  |  | &nbsp;&nbsp; **$14706640** |
| Real Estate - Other – 0.2% | Real Estate - Other – 0.2% | Real Estate - Other – 0.2% |
| Sun Communities Operating LP, 5.5%, 1/15/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;7053000 | &nbsp;&nbsp;$7251909 |
| Real Estate - Retail – 0.5% | Real Estate - Retail – 0.5% | Real Estate - Retail – 0.5% |
| STORE Capital Corp., REIT, 4.5%, 3/15/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;1747000 | &nbsp;&nbsp;$1721147 |
| WEA Finance LLC, 4.125%, 9/20/2028 (n) | &nbsp;&nbsp;10341000 | &nbsp;&nbsp;&nbsp;&nbsp; **10123799** |
| WEA Finance LLC, 3.5%, 6/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2554000 | &nbsp;&nbsp;&nbsp;&nbsp; **2423668** |
| WEA Finance LLC, REIT, 2.875%, 1/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1765000 | &nbsp;&nbsp;&nbsp;&nbsp; **1712416** |
|  |  | &nbsp;&nbsp; **$15981030** |
| Specialty Chemicals – 0.7% | Specialty Chemicals – 0.7% | Specialty Chemicals – 0.7% |
| International Flavors & Fragrances, Inc., 1.23%, 10/01/2025 (n) | $&nbsp;&nbsp;15846000 | &nbsp;&nbsp;$15561058 |
| International Flavors & Fragrances, Inc., 1.832%, 10/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5071000 | &nbsp;&nbsp;&nbsp;&nbsp; **4738028** |
|  |  | &nbsp;&nbsp; **$20299086** |
| Specialty Stores – 0.5% | Specialty Stores – 0.5% | Specialty Stores – 0.5% |
| Genuine Parts Co., 4.95%, 8/15/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;8889000 | &nbsp;&nbsp;$8932989 |
| Ross Stores, Inc., 0.875%, 4/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;7614000 | &nbsp;&nbsp;&nbsp;&nbsp; **7350227** |
|  |  | &nbsp;&nbsp; **$16283216** |
| Telecommunications - Wireless – 0.7% | Telecommunications - Wireless – 0.7% | Telecommunications - Wireless – 0.7% |
| Crown Castle, Inc., REIT, 1.35%, 7/15/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;1776000 | &nbsp;&nbsp;$1763218 |
| Crown Castle, Inc., REIT, 2.9%, 3/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;3817000 | &nbsp;&nbsp;&nbsp;&nbsp; **3702726** |
| Rogers Communications, Inc., 3.2%, 3/15/2027 | &nbsp;&nbsp;12956000 | &nbsp;&nbsp;&nbsp;&nbsp; **12669025** |
| T-Mobile USA, Inc., 4.2%, 10/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;4347000 | &nbsp;&nbsp;&nbsp;&nbsp; **4293884** |
|  |  | &nbsp;&nbsp; **$22428853** |
| Tobacco – 1.4% | Tobacco – 1.4% | Tobacco – 1.4% |
| B.A.T. International Finance PLC, 5.931%, 2/02/2029 | $&nbsp;&nbsp;14750000 | &nbsp;&nbsp;$15431389 |
| Japan Tobacco, Inc., 4.85%, 5/15/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9066000 | &nbsp;&nbsp;&nbsp;&nbsp; **9192534** |
| Philip Morris International, Inc., 5%, 11/17/2025 | &nbsp;&nbsp;&nbsp;&nbsp;3250000 | &nbsp;&nbsp;&nbsp;&nbsp; **3258346** |
| Philip Morris International, Inc., 5.125%, 11/17/2027 | &nbsp;&nbsp;&nbsp;&nbsp;2895000 | &nbsp;&nbsp;&nbsp;&nbsp; **2956680** |
| Philip Morris International, Inc., 4.875%, 2/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;6100000 | &nbsp;&nbsp;&nbsp;&nbsp; **6210163** |
| Philip Morris International, Inc., 4.125%, 4/28/2028 | &nbsp;&nbsp;&nbsp;&nbsp;5373000 | &nbsp;&nbsp;&nbsp;&nbsp; **5367128** |
|  |  | &nbsp;&nbsp; **$42416240** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Transportation - Services – 1.8% | Transportation - Services – 1.8% | Transportation - Services – 1.8% |
| Element Fleet Management Corp., 5.643%, 3/13/2027 (n) | $&nbsp;&nbsp;12644000 | &nbsp;&nbsp;$12859477 |
| Element Fleet Management Corp., 5.037%, 3/25/2030 (n) | &nbsp;&nbsp;13880000 | &nbsp;&nbsp;&nbsp;&nbsp; **13811875** |
| ERAC USA Finance LLC, 3.8%, 11/01/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2559000 | &nbsp;&nbsp;&nbsp;&nbsp; **2547241** |
| GXO Logistics, Inc., 6.25%, 5/06/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5893000 | &nbsp;&nbsp;&nbsp;&nbsp; **5993645** |
| Penske Truck Leasing Co. LP, 5.35%, 1/12/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5489000 | &nbsp;&nbsp;&nbsp;&nbsp; **5551201** |
| Penske Truck Leasing Co. LP, 5.35%, 3/30/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8420000 | &nbsp;&nbsp;&nbsp;&nbsp; **8571025** |
| Penske Truck Leasing Co. LP, 5.25%, 7/01/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6187000 | &nbsp;&nbsp;&nbsp;&nbsp; **6290501** |
|  |  | &nbsp;&nbsp; **$55624965** |
| U.S. Treasury Obligations – 24.4% | U.S. Treasury Obligations – 24.4% | U.S. Treasury Obligations – 24.4% |
| U.S. Treasury Notes, 4.875%, 11/30/2025 | $170599000 | &nbsp;&nbsp;$171329377 |
| U.S. Treasury Notes, 4.125%, 6/15/2026 (f) | 221462000 | &nbsp;&nbsp;&nbsp;&nbsp; **222128116** |
| U.S. Treasury Notes, 4.625%, 11/15/2026 | 273785000 | &nbsp;&nbsp;&nbsp;&nbsp; **277463986** |
| U.S. Treasury Notes, 2.75%, 7/31/2027 | &nbsp;&nbsp;93143000 | &nbsp;&nbsp;&nbsp;&nbsp; **91432952** |
|  |  | &nbsp;&nbsp; **$762354431** |
| Utilities - Electric Power – 3.0% | Utilities - Electric Power – 3.0% | Utilities - Electric Power – 3.0% |
| Algonquin Power & Utilities Corp., 5.365%, 6/15/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;3372000 | &nbsp;&nbsp;$3393900 |
| American Transmission Systems, Inc., 2.65%, 1/15/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1305000 | &nbsp;&nbsp;&nbsp;&nbsp; **1133272** |
| Con Edison Co. of NY, Inc., FLR, 4.887% (SOFR - 1 day + 0.52%), 11/18/2027 | &nbsp;&nbsp;&nbsp;&nbsp;8765000 | &nbsp;&nbsp;&nbsp;&nbsp; **8739582** |
| Edison International, 4.7%, 8/15/2025 | &nbsp;&nbsp;10842000 | &nbsp;&nbsp;&nbsp;&nbsp; **10818694** |
| Enel Finance International N.V., 4.5%, 6/15/2025 (n) | &nbsp;&nbsp;15000000 | &nbsp;&nbsp;&nbsp;&nbsp; **14988752** |
| Enel Finance International N.V., 7.05%, 10/14/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3331000 | &nbsp;&nbsp;&nbsp;&nbsp; **3355670** |
| FirstEnergy Corp., 1.6%, 1/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;2459000 | &nbsp;&nbsp;&nbsp;&nbsp; **2398264** |
| NextEra Energy Capital Holdings, Inc., 5.749%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;7988000 | &nbsp;&nbsp;&nbsp;&nbsp; **8012938** |
| Pacific Gas & Electric Co., 4.95%, 6/08/2025 | &nbsp;&nbsp;&nbsp;&nbsp;7450000 | &nbsp;&nbsp;&nbsp;&nbsp; **7446645** |
| Pacific Gas & Electric Co., 5.367%, 9/04/2025 | &nbsp;&nbsp;14631000 | &nbsp;&nbsp;&nbsp;&nbsp; **14620843** |
| Pacific Gas & Electric Co., 6.1%, 1/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;8080000 | &nbsp;&nbsp;&nbsp;&nbsp; **8350169** |
| Pacific Gas & Electric Co., 5.55%, 5/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5998000 | &nbsp;&nbsp;&nbsp;&nbsp; **6094586** |
| Trans-Allegheny Interstate Line Co., 5%, 1/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4235000 | &nbsp;&nbsp;&nbsp;&nbsp; **4308042** |
|  |  | &nbsp;&nbsp; **$93661357** |
| **Total Bonds (Identified Cost, $3,068,121,204)** |  | &nbsp;&nbsp;**$3066614856** |
| Mutual Funds (h) – 1.4% | Mutual Funds (h) – 1.4% | Mutual Funds (h) – 1.4% |
| Money Market Funds – 1.4% | Money Market Funds – 1.4% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) (Identified Cost, $44,720,376) | &nbsp;&nbsp;44720022 | &nbsp;&nbsp;$44720022 |
| Other Assets, Less Liabilities – 0.6% |  | &nbsp;&nbsp;&nbsp;&nbsp; **19121422** |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | **$3130456300** |

---

------

MFS Limited Maturity Fund

Portfolio of Investments – continued

(a) Non-income producing security.

(d) In default.

(f) All or a portion of the security has been segregated as collateral for open futures contracts and cleared swap agreements.

(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 $44,720,022 and $3,066,614,856, respectively.

(i) Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the security.

(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 $1,217,531,443, representing 38.9% of net assets.

(q) Interest received was less than stated coupon rate.

(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.

(w) When-issued security.

---

| | |
|:---|:---|
| The following abbreviations are used in this report and are defined: | The following abbreviations are used in this report and are defined: |
| AGM | &nbsp;&nbsp;Assured Guaranty Municipal |
| CLO | &nbsp;&nbsp;Collateralized Loan Obligation |
| CMT | &nbsp;&nbsp;Constant Maturity Treasury |
| FLR | &nbsp;&nbsp;Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate. All reference rates are USD unless otherwise noted. |
| REIT | &nbsp;&nbsp;Real Estate Investment Trust |
| SOFR | &nbsp;&nbsp;Secured Overnight Financing Rate |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** |
| **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** |
| **Description** | &nbsp;&nbsp;&nbsp;&nbsp;**Long/<br> Short** | &nbsp;&nbsp;&nbsp;&nbsp;**Currency** | &nbsp;&nbsp;&nbsp;&nbsp;**Contracts** | &nbsp;&nbsp;&nbsp;&nbsp;**Notional<br> Amount** | &nbsp;&nbsp;&nbsp;&nbsp;**Expiration<br> Date** | &nbsp;&nbsp;&nbsp;&nbsp;**Value/Unrealized<br> Appreciation<br> (Depreciation)** |
| **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Note 2 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;226 | &nbsp;&nbsp;&nbsp;&nbsp;$47041547 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$436167 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** | **Cleared Swap Agreements** |
| **Maturity<br> Date** | **Maturity<br> Date** | **Notional<br> Amount** | **Counterparty** | **Cash Flows<br> to Receive/<br> Frequency** | **Cash Flows<br> to Pay/<br> Frequency** | **Unrealized<br> Appreciation<br> (Depreciation)** | **Net Unamortized<br> Upfront Payments<br> (Receipts)** | **Value** |
| **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** |  |  |  |
| ***Interest Rate Swaps*** | ***Interest Rate Swaps*** | ***Interest Rate Swaps*** | ***Interest Rate Swaps*** | ***Interest Rate Swaps*** | ***Interest Rate Swaps*** |  |  |  |
| 10/02/26 | USD | 228000000 | centrally cleared | 4.697%/Annually | Daily SOFR/Annually | $3932446 | $(20568) | $3911878 |
| 10/02/26 | USD | 70900000 | centrally cleared | 4.664%/Annually | Daily SOFR/Annually | &nbsp;&nbsp;&nbsp;1171785 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;1171785 |
| 12/23/27 | USD | 113000000 | centrally cleared | 4.106%/Annually | Daily SOFR/Annually | &nbsp;&nbsp;&nbsp;2187029 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;2187029 |
|  |  |  |  |  |  | $7291260 | $(20568) | $7270692 |

---

At April 30, 2025, the fund had liquid securities with an aggregate value of $5,303,917 to cover any collateral or margin obligations for certain derivative contracts.

#### See Notes to Financial Statements

------

MFS Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Assets and Liabilities** |

---

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

---

| | |
|:---|:---|
| **At 4/30/25 <br>Assets** |  |
| Investments in unaffiliated issuers, at value (identified cost, $3,068,121,204) | &nbsp;&nbsp;$3066614856 |
| Investments in affiliated issuers, at value (identified cost, $44,720,376) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44720022 |
| Receivables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Net daily variation margin on open cleared swap agreements | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;445599 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net daily variation margin on open futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31780 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7328882 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest and dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32506303 |
| Receivable from investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;129098 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4474 |
| Total assets | &nbsp;&nbsp;$3151781014 |
| **Liabilities** |  |
| Payable to custodian | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5505 |
| Payables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;220873 |
| &nbsp;&nbsp;&nbsp;&nbsp;When-issued investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17250394 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3211320 |
| Payable to affiliates |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2217 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;446888 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9760 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;872 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;176885 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$21324714 |
| Net assets | &nbsp;&nbsp;$3130456300 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp;$3235094890 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;(104638590) |
| Net assets | &nbsp;&nbsp;$3130456300 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;532476492 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Net assets** | &nbsp;&nbsp;&nbsp;&nbsp;**Shares<br> outstanding** | &nbsp;&nbsp;&nbsp;&nbsp;**Net asset value<br> per share (a)** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;$1043784241 | &nbsp;&nbsp;&nbsp;&nbsp;177200866 | &nbsp;&nbsp;&nbsp;&nbsp;$5.89 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;719678 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;122373 | &nbsp;&nbsp;&nbsp;&nbsp;5.88 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20246652 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3438163 | &nbsp;&nbsp;&nbsp;&nbsp;5.89 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;695854648 | &nbsp;&nbsp;&nbsp;&nbsp;118682573 | &nbsp;&nbsp;&nbsp;&nbsp;5.86 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;532242 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;90698 | &nbsp;&nbsp;&nbsp;&nbsp;5.87 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1009977 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;171342 | &nbsp;&nbsp;&nbsp;&nbsp;5.89 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;617030 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;104676 | &nbsp;&nbsp;&nbsp;&nbsp;5.89 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1589446 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;268985 | &nbsp;&nbsp;&nbsp;&nbsp;5.91 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;1366102386 | &nbsp;&nbsp;&nbsp;&nbsp;232396816 | &nbsp;&nbsp;&nbsp;&nbsp;5.88 |

---

(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 $6.04 [100 / 97.50 x $5.89]. 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. Redemption price per share was equal to the net asset value per share for Classes I, R1, R2, R3, R4, and R6.

------

MFS Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Operations** |

---

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

---

| | |
|:---|:---|
| **Year ended 4/30/25 <br>Net investment income (loss)** |  |
| Income |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest | &nbsp;&nbsp;$134217627 |
| &nbsp;&nbsp;&nbsp;&nbsp;Dividends from affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4736526 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;103653 |
| Total investment income | &nbsp;&nbsp;$139057806 |
| Expenses |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Management fee | &nbsp;&nbsp;&nbsp;$10578976 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2677467 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1482582 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;421023 |
| &nbsp;&nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;51879 |
| &nbsp;&nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;182037 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;190105 |
| &nbsp;&nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80053 |
| &nbsp;&nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15063 |
| &nbsp;&nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;367245 |
| Total expenses | &nbsp;&nbsp;&nbsp;$16046430 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fees paid indirectly | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7262) |
| &nbsp;&nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2916018) |
| Net expenses | &nbsp;&nbsp;&nbsp;$13123150 |
| Net investment income (loss) | &nbsp;&nbsp;$125934656 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;$4599535 |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(53347) |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(627601) |
| &nbsp;&nbsp;&nbsp;&nbsp;Swap agreements | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1979658) |
| &nbsp;&nbsp;&nbsp;&nbsp;Foreign currency | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$1938926 |
| Change in unrealized appreciation or depreciation |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;&nbsp;$66218517 |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(354) |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1757576 |
| &nbsp;&nbsp;&nbsp;&nbsp;Swap agreements | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9739033 |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;$77714772 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;$79653698 |
| Change in net assets from operations | &nbsp;&nbsp;$205588354 |

---

------

MFS Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statements of Changes in Net Assets** |

---

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | |
|:---|:---|:---|
|  | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;$125934656 | &nbsp;&nbsp;&nbsp;&nbsp;$111117186 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1938926 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(34701693) |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;77714772 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34141893 |
| Change in net assets from operations | &nbsp;&nbsp;&nbsp;$205588354 | &nbsp;&nbsp;&nbsp;&nbsp;$110557386 |
| Total distributions to shareholders | &nbsp;&nbsp;$(128231250) | &nbsp;&nbsp;&nbsp;&nbsp;$(112675801) |
| Change in net assets from fund share transactions | &nbsp;&nbsp;&nbsp;$262847197 | &nbsp;&nbsp;&nbsp;&nbsp;$(181633601) |
| Total change in net assets | &nbsp;&nbsp;&nbsp;$340204301 | &nbsp;&nbsp;&nbsp;&nbsp;$(183752016) |
| **Net assets** |  |  |
| At beginning of period | &nbsp;&nbsp;2790251999 | &nbsp;&nbsp;&nbsp;&nbsp;2974004015 |
| At end of period | $3130456300 | &nbsp;&nbsp;&nbsp;$2790251999 |

---

------

MFS Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Financial Highlights** |

---

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class A** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.09 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.12) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.59) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.59 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.58 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.04 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.56 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | $1043784 | &nbsp;&nbsp;&nbsp;$934237 | &nbsp;&nbsp;&nbsp;$1019905 | &nbsp;&nbsp;&nbsp;$1046034 | &nbsp;&nbsp;&nbsp;$1042239 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class B** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $5.72 | &nbsp;&nbsp;&nbsp;&nbsp;$5.73 | &nbsp;&nbsp;&nbsp;&nbsp;$5.79 | &nbsp;&nbsp;&nbsp;&nbsp;$6.08 | &nbsp;&nbsp;&nbsp;&nbsp;$5.93 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.20 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;$0.02 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.16 | &nbsp;&nbsp;&nbsp;&nbsp;(0.00)(w) | &nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 |
| Total from investment operations | $0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.20) | &nbsp;&nbsp;&nbsp;$(0.18) | &nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;$(0.03) | &nbsp;&nbsp;&nbsp;$(0.08) |
| Net asset value, end of period (x) | $5.88 | &nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;$5.73 | &nbsp;&nbsp;&nbsp;&nbsp;$5.79 | &nbsp;&nbsp;&nbsp;&nbsp;$6.08 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.42 | &nbsp;&nbsp;&nbsp;&nbsp;3.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;(4.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.82 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.32 | &nbsp;&nbsp;&nbsp;&nbsp;1.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.34 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.40 | &nbsp;&nbsp;&nbsp;&nbsp;3.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.84 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$720 | &nbsp;&nbsp;&nbsp;&nbsp;$939 | &nbsp;&nbsp;&nbsp;$1663 | &nbsp;&nbsp;&nbsp;$2361 | &nbsp;&nbsp;&nbsp;$2931 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Limited Maturity Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class C** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$5.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.17 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.07) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$5.89 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.09 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;6.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.71 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.43 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;3.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | $20247 | &nbsp;&nbsp;&nbsp;$21947 | &nbsp;&nbsp;&nbsp;$26732 | &nbsp;&nbsp;&nbsp;$31747 | &nbsp;&nbsp;&nbsp;$39241 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class I** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;$5.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.92 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.10 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.00)(w) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.13) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;$5.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.71 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.07 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.63) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.75 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.69 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | $695855 | &nbsp;&nbsp;&nbsp;$528158 | &nbsp;&nbsp;&nbsp;$625604 | &nbsp;&nbsp;&nbsp;$570543 | &nbsp;&nbsp;&nbsp;$453159 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Limited Maturity Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R1** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $5.71 | &nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;$5.78 | &nbsp;&nbsp;&nbsp;&nbsp;$6.08 | &nbsp;&nbsp;&nbsp;&nbsp;$5.93 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.19 | &nbsp;&nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.17 |
| Total from investment operations | $0.36 | &nbsp;&nbsp;&nbsp;&nbsp;$0.16 | &nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;$(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;$0.22 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.20) | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;$(0.02) | &nbsp;&nbsp;&nbsp;$(0.07) |
| Net asset value, end of period (x) | $5.87 | &nbsp;&nbsp;&nbsp;&nbsp;$5.71 | &nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;$5.78 | &nbsp;&nbsp;&nbsp;&nbsp;$6.08 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.32 | &nbsp;&nbsp;&nbsp;&nbsp;2.90 | &nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;(4.58) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.71 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;1.43 | &nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.44 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.30 | &nbsp;&nbsp;&nbsp;&nbsp;2.98 | &nbsp;&nbsp;&nbsp;&nbsp;1.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.74 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$532 | &nbsp;&nbsp;&nbsp;&nbsp;$489 | &nbsp;&nbsp;&nbsp;&nbsp;$456 | &nbsp;&nbsp;&nbsp;$1252 | &nbsp;&nbsp;&nbsp;$1597 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R2** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;$6.10 | &nbsp;&nbsp;&nbsp;&nbsp;$5.94 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.21 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 | &nbsp;&nbsp;&nbsp;&nbsp;$0.05 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.15 | &nbsp;&nbsp;&nbsp;&nbsp;(0.00)(w) | &nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.19 |
| Total from investment operations | &nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;$0.21 | &nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.23) | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;$(0.11) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$5.89 | &nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;$6.10 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.12 | &nbsp;&nbsp;&nbsp;&nbsp;(3.99) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.50 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.84 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.32 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | $1010 | &nbsp;&nbsp;&nbsp;$1004 | &nbsp;&nbsp;&nbsp;$1151 | &nbsp;&nbsp;&nbsp;$1646 | &nbsp;&nbsp;&nbsp;$1997 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Limited Maturity Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R3** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;$6.10 | &nbsp;&nbsp;&nbsp;&nbsp;$5.95 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.24 | &nbsp;&nbsp;&nbsp;&nbsp;$0.21 | &nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;&nbsp;$0.09 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.15 | &nbsp;&nbsp;&nbsp;&nbsp;0.01 | &nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.18 |
| Total from investment operations | $0.39 | &nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;&nbsp;$0.27 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.24) | &nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;$(0.12) |
| Net asset value, end of period (x) | $5.89 | &nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.74 | &nbsp;&nbsp;&nbsp;&nbsp;$5.80 | &nbsp;&nbsp;&nbsp;&nbsp;$6.10 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;6.92 | &nbsp;&nbsp;&nbsp;&nbsp;3.86 | &nbsp;&nbsp;&nbsp;&nbsp;1.27 | &nbsp;&nbsp;&nbsp;&nbsp;(3.85) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.48 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.67 | &nbsp;&nbsp;&nbsp;&nbsp;0.68 | &nbsp;&nbsp;&nbsp;&nbsp;0.67 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.67 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.69 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.05 | &nbsp;&nbsp;&nbsp;&nbsp;3.73 | &nbsp;&nbsp;&nbsp;&nbsp;2.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$617 | &nbsp;&nbsp;&nbsp;&nbsp;$629 | &nbsp;&nbsp;&nbsp;&nbsp;$595 | &nbsp;&nbsp;&nbsp;$1001 | &nbsp;&nbsp;&nbsp;$1318 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R4** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;$5.75 | &nbsp;&nbsp;&nbsp;&nbsp;$5.76 | &nbsp;&nbsp;&nbsp;&nbsp;$5.82 | &nbsp;&nbsp;&nbsp;&nbsp;$6.11 | &nbsp;&nbsp;&nbsp;&nbsp;$5.96 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;(0.05) | &nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;0.17 |
| Total from investment operations | &nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;$0.09 | &nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.26) | &nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;$(0.13) |
| Net asset value, end of period (x) | &nbsp;&nbsp;$5.91 | &nbsp;&nbsp;&nbsp;&nbsp;$5.75 | &nbsp;&nbsp;&nbsp;&nbsp;$5.76 | &nbsp;&nbsp;&nbsp;&nbsp;$5.82 | &nbsp;&nbsp;&nbsp;&nbsp;$6.11 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.56 | &nbsp;&nbsp;&nbsp;&nbsp;(3.43) | &nbsp;&nbsp;&nbsp;&nbsp;4.74 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.49 | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;0.53 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;0.44 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;4.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.48 | &nbsp;&nbsp;&nbsp;&nbsp;1.16 | &nbsp;&nbsp;&nbsp;&nbsp;1.73 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | $1589 | &nbsp;&nbsp;&nbsp;$1445 | &nbsp;&nbsp;&nbsp;$1039 | &nbsp;&nbsp;&nbsp;&nbsp;$906 | &nbsp;&nbsp;&nbsp;&nbsp;$275 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Limited Maturity Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R6** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.93 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.11 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.06) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.28) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.17 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.13) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.88 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$5.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$6.08 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.82 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.06 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.77 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;66 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 |
| Net assets at end of period (000 omitted) | $1366102 | &nbsp;&nbsp;&nbsp;$1301405 | &nbsp;&nbsp;&nbsp;$1296859 | &nbsp;&nbsp;&nbsp;$1116143 | &nbsp;&nbsp;&nbsp;$942709 |

---

(d) Per share data is based on average shares outstanding.

(f) Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note 2 in the Notes to Financial Statements for additional information.

(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.

------

MFS Limited Maturity Fund

### Notes to Financial Statements
(1) Business and Organization

MFS Limited Maturity Fund (the fund) is a diversified series of MFS Series Trust IX (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.**

In this reporting period, the fund adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect the fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. The fund represents a single operating segment and the Chairman's Committee of the fund's adviser acts as the segment's CODM. The fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within the fund's financial statements.

**Balance Sheet Offsetting — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.**

**Investment Valuations — Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.**

Under the fund's valuation policy and procedures, debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Swap agreements are generally valued using valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data. 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 and swap agreements. The following is a summary of the levels used as of April 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| U.S. Treasury Bonds & U.S. Government Agencies & Equivalents | $— | &nbsp;&nbsp;$762354431 | $— | &nbsp;&nbsp;$762354431 |
| Non - U.S. Sovereign Debt |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10443379 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10443379 |
| Municipal Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11401021 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11401021 |
| U.S. Corporate Bonds |  | &nbsp;&nbsp;1041583993 |  | &nbsp;&nbsp;1041583993 |
| Residential Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;&nbsp;156446583 |  | &nbsp;&nbsp;&nbsp;&nbsp;156446583 |
| Commercial Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;&nbsp;122226008 |  | &nbsp;&nbsp;&nbsp;&nbsp;122226008 |
| Asset-Backed Securities (including CDOs) |  | &nbsp;&nbsp;&nbsp;&nbsp;439926388 |  | &nbsp;&nbsp;&nbsp;&nbsp;439926388 |
| Foreign Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;522233053 |  | &nbsp;&nbsp;&nbsp;&nbsp;522233053 |
| Investment Companies | &nbsp;&nbsp;44720022 |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44720022 |
| Total | $44720022 | $3066614856 | $— | $3111334878 |

---

---

| | | |
|:---|:---|:---|
| **Other Financial Instruments** |  |  |
| Futures Contracts – Assets | $— | $436167 |
| Swap Agreements – Assets | 7270692 | 7270692 |

---

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.**

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

The derivative instruments used by the fund during the period were futures contracts and swap agreements. 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.

---

| | | |
|:---|:---|:---|
|  |  | &nbsp;&nbsp;**Fair Value (a)** |
| **Risk** | **Derivative Contracts** | &nbsp;&nbsp;**Asset Derivatives** |
| Interest Rate | Futures Contracts | &nbsp;&nbsp;&nbsp;&nbsp;$436167 |
| Interest Rate | Cleared Swap Agreements | &nbsp;&nbsp;&nbsp;&nbsp;7270692 |
| Total |  | &nbsp;&nbsp;$7706859 |

---

(a) Values presented in this table for futures contracts and cleared swap agreements correspond to the values reported in the Portfolio of Investments. Only the current day net variation margin for futures contracts and cleared swap agreements is reported separately within the Statement of Assets and Liabilities.

The following table presents, by major type of derivative contract, the realized gain (loss) on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | | |
|:---|:---|:---|
| **Risk** | **Futures<br> Contracts** | &nbsp;&nbsp;**Swap<br> Agreements** |
| Interest Rate | $(627601) | &nbsp;&nbsp;$(1979658) |

---

The following table presents, by major type of derivative contract, the change in unrealized appreciation or depreciation on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | | |
|:---|:---|:---|
| **Risk** | **Futures<br> Contracts** | &nbsp;&nbsp;**Swap<br> Agreements** |
| Interest Rate | $1757576 | &nbsp;&nbsp;$9739033 |

---

Derivative counterparty credit risk is managed through formal evaluation of the creditworthiness of all potential counterparties. On certain, but not all, uncleared derivatives, the fund attempts to reduce its exposure to counterparty credit risk whenever possible by entering into an ISDA Master Agreement on a bilateral basis. The ISDA Master Agreement gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a specified deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each agreement to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the ISDA Master Agreement could result in a reduction of the fund's credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

Collateral and margin requirements differ by type of derivative. For cleared derivatives (e.g., futures contracts, cleared swaps, and exchange-traded options), margin requirements are set by the clearing broker and the clearing house and collateral, in the form of cash or securities, is posted by the fund directly with the clearing broker. Collateral terms are counterparty agreement specific for uncleared derivatives (e.g., forward foreign currency exchange contracts, uncleared swap agreements, and uncleared options). Collateral, in the form of cash and securities, is held in segregated accounts with the fund's custodian in connection with these agreements. For derivatives traded under an ISDA Master Agreement, which contains a credit support annex, the collateral requirements are netted across all transactions traded under such counterparty-specific agreement and an amount is posted from one party to the other to collateralize such obligations. Cash that has been segregated or delivered to cover the fund's collateral or margin obligations under derivative contracts, if any, will be reported separately in the Statement of Assets and Liabilities as restricted cash for uncleared derivatives and/or deposits with brokers for cleared derivatives. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments. The fund may be required to make payments of interest on uncovered collateral or margin obligations with the broker. Any such payments are included in "Miscellaneous" expense in the Statement of Operations.

**Futures Contracts — The fund entered into futures contracts which may be used to hedge against or obtain broad market exposure, interest rate exposure, currency exposure, or to manage duration. A futures contract represents a commitment for the future purchase or sale of an asset at a specified price on a specified date.**

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

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.

**Swap Agreements — The fund entered into swap agreements which generally involve a periodic exchange of cash payments on a net basis, at specified intervals or upon the occurrence of specified events, between the fund and a counterparty. Certain swap agreements may be entered into as a bilateral contract ("uncleared swaps") while others are required to be centrally cleared ("cleared swaps").** 

Both cleared and uncleared swap agreements are marked to market daily. The value of uncleared swap agreements is reported in the Statement of Assets and Liabilities as "Uncleared swaps, at value" which includes any related interest accruals to be paid or received by the fund. For cleared swaps, payments (variation margin) are made or received by the fund each day, depending on the daily fluctuations in the value of the cleared swap, such that only the current day net receivable or payable for variation margin is reported in the Statement of Assets and Liabilities.

For both cleared and uncleared swaps, premiums paid or received at the inception of the agreements are amortized over the term of the agreement as realized gain or loss on swap agreements in the Statement of Operations. The periodic exchange of net cash payments, as well as any liquidation payment received or made upon early termination, are recorded as a realized gain or loss on swap agreements in the Statement of Operations. The change in unrealized appreciation or depreciation on swap agreements in the Statement of Operations reflects the aggregate change over the reporting period in the value of swaps net of any unamortized premiums paid or received.

Risks related to swap agreements include the possible lack of a liquid market, unfavorable market and interest rate movements of the underlying instrument and the failure of the counterparty to perform under the terms of the agreements. The fund's maximum risk of loss from counterparty credit risk is the discounted net value of the cash flows to be received from/paid to the counterparty over the contract's remaining life, to the extent that the amount is positive. To address counterparty risk, uncleared swap agreements are limited to only highly-rated counterparties. Risk is further reduced by having an ISDA Master Agreement ("ISDA") between the fund and the counterparty and, where applicable, by the posting of collateral by the counterparty to the fund to cover the fund's exposure to the counterparty under such ISDA. The fund's counterparty risk due to cleared swaps is mitigated by the fact that the clearinghouse is the counterparty to the transaction and the regulatory requirement safeguards in the event of a clearing broker bankruptcy.

The fund entered into interest rate swap agreements in order to manage its exposure to interest rate fluctuations. Interest rate swap agreements involve the periodic exchange of cash flows, between the fund and a counterparty, based on the difference between two interest rates applied to a notional principal amount. The two interest rates exchanged may either be a fixed rate and a floating rate or two floating rates based on different indices.

**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.**

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

**Investment Transactions and Income — Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Debt obligations may be placed on non-accrual status or set to accrue at a rate of interest less than the contractual coupon when the collection of all or a portion of interest has become doubtful. Interest income for those debt obligations may be further reduced by the write-off of the related interest receivables when deemed uncollectible.**

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 securities on a when-issued or delayed delivery basis. In these extended settlement transactions, the receipt or delivery of the securities by the fund and related payments occur at a future date, usually beyond the customary settlement period. The price of such security and the date that the security will be settled are generally fixed at the time the transaction is negotiated. The value of the security varies with market fluctuations and for debt securities no interest accrues to the fund until settlement takes place. When the fund sells securities on a when-issued or delayed delivery basis, the fund typically owns or has the right to acquire securities equivalent in kind and amount to the securities sold. Purchase and sale commitments for when-issued or delayed delivery securities are held at carrying amount, which approximates fair value and are categorized as level 2 within the fair value hierarchy, and included in When-issued investments purchased and When-issued investments sold in the Statement of Assets and Liabilities, as applicable. Losses may arise due to changes in the value of the underlying securities prior to settlement date or if the counterparty does not perform under the contract's terms, or if the issuer does not issue the 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 year ended April 30, 2025, is shown as a reduction of total expenses in the Statement of Operations.**

**Tax Matters and Distributions — The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.**

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

Book/tax differences primarily relate to amortization of premium and accretion of discount of debt securities.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$128231250 | &nbsp;&nbsp;&nbsp;$112675801 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | |
|:---|:---|
| **As of 4/30/25** |  |
| Cost of investments | &nbsp;&nbsp;&nbsp;$3120258331 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23306003 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(24522597) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(1216594) |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12823238 |
| Capital loss carryforwards | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(105131373) |
| Other temporary differences | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11113861) |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$(104638590) |

---

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 | &nbsp;&nbsp;$(23019462) |
| Long-Term | &nbsp;&nbsp;&nbsp;(82111911) |
| Total | $(105131373) |

---

**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 B and 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:**

---

| | | |
|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$41436397 | &nbsp;&nbsp;&nbsp;&nbsp;$37629674 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26890 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40402 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;711569 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;699371 |
| Class I | &nbsp;&nbsp;&nbsp;26666140 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21263061 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17326 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14440 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40389 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40863 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26706 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30412 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61620 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48214 |
| Class R6 | &nbsp;&nbsp;&nbsp;59244213 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52909364 |
| Total | $128231250 | &nbsp;&nbsp;&nbsp;$112675801 |

---

(3) Transactions with Affiliates

**Investment Adviser — The fund had an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. For the period from May 1, 2024 through July 31, 2024, the management fee was computed daily and paid monthly at the following annual rates based on the fund's average daily net assets:**

---

| | |
|:---|:---|
| Up to $1 billion | 0.40% |
| In excess of $1 billion and up to $2.5 billion | 0.35% |
| In excess of $2.5 billion | 0.30% |

---

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

Effective August 1, 2024, 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 | 0.40% |
| In excess of $1 billion and up to $2.5 billion | 0.35% |
| In excess of $2.5 billion and up to $5 billion | 0.30% |
| In excess of $5 billion | 0.29% |

---

MFS has agreed in writing to reduce its management fee by a specified amount if certain MFS mutual fund assets exceed thresholds agreed to by MFS and the fund's Board of Trustees. MFS has also agreed in writing to waive at least 0.01% of its management fee as part of this agreement. The agreement to waive at least 0.01% of the management fee will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2026. For the year ended April 30, 2025, this management fee reduction amounted to $397,590, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.35% of the fund's average daily net assets.

The investment adviser has agreed in writing to bear the fund's expenses, excluding management fees, distribution and service fees, payments made to service providers (other than MFS Service Center, Inc. ("MFSC")) that provide certain sub-accounting services, 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 as interest and borrowing expenses incurred in connection with the fund's investment activity), such that "Other Expenses" do not exceed 0.00% of the class' average daily net assets annually for each class of shares. This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue until at least August 31, 2025. For the year ended April 30, 2025, this reduction amounted to $1,537,229, 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 $59,032 for the year ended April 30, 2025, as its portion of the initial sales charge on sales of Class A shares of the fund.**

The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.

The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. The distribution and service fees are computed daily and paid monthly.

#### Distribution Plan Fee Table:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.15% | $2447437 |
| Class B | 0.75% | 0.25% | 1.00% | 0.90% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7726 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;210490 |
| Class R1 | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5127 |
| Class R2 | 0.25% | 0.25% | 0.50% | 0.40% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5071 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.25% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1616 |
| Total Distribution and Service Fees |  |  |  |  | $2677467 |

---

(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each class's average daily
net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended April 30, 2025 based on each class's average daily net assets. 0.10% of
the Class A and Class B service fee is currently being waived under a written waiver agreement. For the year ended April 30, 2025, this waiver amounted to $978,963 and $772 for Class A and Class B shares,
respectively, and is included in the reduction of total expenses in the Statement of Operations. This written waiver agreement will continue until modified by the fund's Board of Trustees, but such agreement
will continue at least until August 31, 2025. 0.10% of the Class R2 distribution fee is currently being waived under a written waiver agreement. For the year ended April 30, 2025, this waiver amounted to $1,014
and is included in the reduction of total expenses in the Statement of Operations. This written waiver agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at
least until August 31, 2025. MFD has voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on the account except
for accounts attributable to MFS or its affiliates' seed money. For the year ended April 30, 2025, this rebate amounted to $330 and $120 for Class A and Class C shares, respectively, and is included in the
reduction of total expenses in the Statement of Operations.

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended April 30, 2025, were as follows:

---

| | |
|:---|:---|
|  | **Amount** |
| Class A | $50908 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61 |
| Class C | &nbsp;&nbsp;&nbsp;3172 |

---

**Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended April 30, 2025, the fee was $184,625, which equated to 0.0063% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended April 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $1,297,957.**

**Administrator — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.0143% 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.**

MFS purchased or redeemed fund shares on the dates indicated:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Date** | **Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class A | &nbsp;&nbsp;10 | &nbsp;&nbsp;$56 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;4 | &nbsp;&nbsp;&nbsp;&nbsp;23 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;10 | &nbsp;&nbsp;&nbsp;&nbsp;57 |

---

(4) Portfolio Securities

For the year ended April 30, 2025, purchases and sales of investments, other than short-term obligations, were as follows:

---

| | | |
|:---|:---|:---|
|  | **Purchases** | &nbsp;&nbsp;**Sales** |
| U.S. Government securities | $333068549 | &nbsp;&nbsp;$318615762 |
| Non-U.S. Government securities | &nbsp;&nbsp;980010888 | &nbsp;&nbsp;&nbsp;&nbsp;708069640 |

---

(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:

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;62628320 | &nbsp;&nbsp;&nbsp;&nbsp;$366113316 | &nbsp;&nbsp;&nbsp;&nbsp;44319398 | &nbsp;&nbsp;&nbsp;&nbsp;$253725089 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26814 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;156612 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26405 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;150240 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;1012715 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5915881 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1231274 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7062677 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;66310633 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;386093813 | &nbsp;&nbsp;&nbsp;&nbsp;45970918 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;262028830 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4080 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23736 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16671 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94651 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8584 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;50191 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35850 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;204960 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12442 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72623 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;72553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;413496 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97216 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;570625 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;174935 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1008246 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;51920930 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;302766182 | &nbsp;&nbsp;&nbsp;&nbsp;52251549 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;298799080 |
|  | 182021734 | &nbsp;&nbsp;$1061762979 | &nbsp;&nbsp;&nbsp;144099553 | &nbsp;&nbsp;&nbsp;&nbsp;$823487269 |
| Shares issued to shareholders<br> in reinvestment of distributions |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;6945736 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$40617706 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6432166 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$36848095 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4593 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26797 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7031 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40183 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;108085 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;631790 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;107470 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;615446 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;4347006 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25319241 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3402752 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;19412827 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2974 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17326 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2530 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14440 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6821 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39919 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7021 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;40255 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4563 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26706 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5207 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29841 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10502 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;61614 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8369 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48117 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;10081192 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;58838673 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9186711 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52518082 |
|  | &nbsp;&nbsp;21511472 | &nbsp;&nbsp;&nbsp;&nbsp;$125579772 | &nbsp;&nbsp;&nbsp;&nbsp;19159257 | &nbsp;&nbsp;&nbsp;&nbsp;$109567286 |
| Shares reacquired |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;(55290533) | &nbsp;&nbsp;&nbsp;$(323100448) | &nbsp;&nbsp;&nbsp;(65622383) | &nbsp;&nbsp;&nbsp;&nbsp;$(375813663) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(73098) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(425621) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(159910) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(911977) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;(1510922) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8826239) | &nbsp;&nbsp;&nbsp;&nbsp;(2171628) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(12422015) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;(44501082) | &nbsp;&nbsp;&nbsp;&nbsp;(258871722) | &nbsp;&nbsp;&nbsp;(66390813) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(378241601) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1968) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11459) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(13391) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(76091) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(18961) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(111084) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(68475) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(392510) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(21962) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(129106) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(71800) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(416369) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(89908) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(527067) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(112703) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(649409) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;(57024448) | &nbsp;&nbsp;&nbsp;&nbsp;(332492808) | &nbsp;&nbsp;&nbsp;(60556870) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(345764521) |
|  | (158532882) | &nbsp;&nbsp;&nbsp;$(924495554) | &nbsp;&nbsp;(195167973) | &nbsp;&nbsp;$(1114688156) |
| Net change |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;14283523 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$83630574 | &nbsp;&nbsp;&nbsp;(14870819) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(85240479) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(41691) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(242212) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(126474) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(721554) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(390122) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2278568) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(832884) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4743892) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;26156557 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;152541332 | &nbsp;&nbsp;&nbsp;(17017143) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(96799944) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5086 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29603 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5810 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33000 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3556) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(20974) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(25604) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(147295) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4957) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(29777) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5960 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26968 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;17810 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;105172 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70601 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;406954 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;4977674 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29112047 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;881390 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5552641 |
|  | &nbsp;&nbsp;45000324 | &nbsp;&nbsp;&nbsp;&nbsp;$262847197 | &nbsp;&nbsp;&nbsp;(31909163) | &nbsp;&nbsp;&nbsp;&nbsp;$(181633601) |

---

The fund is one of several mutual funds in which certain MFS funds may invest. The MFS funds do not invest in the underlying funds for the purpose of exercising management or control. At the end of the period, the MFS Conservative Allocation Fund, the MFS Lifetime Income Fund, the MFS Lifetime 2030 Fund, and the MFS Lifetime 2025 Fund were the owners of record of approximately 12%, 4%, 2%, and 2%, respectively, of the value of outstanding voting shares of the fund.

------

MFS Limited Maturity Fund

Notes to Financial Statements - continued

Effective May 1, 2006, purchases of the fund's Class B shares were closed to new and existing investors subject to certain exceptions.

Effective September 29, 2023, purchases of the fund's Class R1 and Class R2 shares were closed to new eligible investors.

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended April 30, 2025, the fund's commitment fee and interest expense were $14,750 and $0, respectively, and are included in "Miscellaneous" expense in the Statement of Operations.

(7) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the year ended April 30, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$58747939 | &nbsp;&nbsp;&nbsp;$1266626876 | &nbsp;&nbsp;&nbsp;$1280601092 | &nbsp;&nbsp;&nbsp;$(53347) | &nbsp;&nbsp;&nbsp;$(354) | &nbsp;&nbsp;&nbsp;$44720022 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$4736526 | &nbsp;&nbsp;&nbsp;$— |

---

------

MFS Limited Maturity Fund

### Report of Independent Registered Public Accounting Firm
To the Board of Trustees of MFS Series Trust IX and the Shareholders of MFS Limited Maturity Fund:

#### Opinion on the Financial Statements and Financial Highlights&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
We have audited the accompanying statement of assets and liabilities of MFS Limited Maturity Fund (the "Fund"), including the portfolio of investments, as of April 30, 2025, the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of April 30, 2025, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

#### Basis for Opinion&nbsp;&nbsp;&nbsp;&nbsp;
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of April 30, 2025, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

DELOITTE & TOUCHE LLP

Boston, Massachusetts

June 13, 2025

We have served as the auditor of one or more of the MFS investment companies since 1924.

------

MFS Limited Maturity Fund

### Results of Shareholder Meeting (unaudited)
At a special meeting of shareholders of MFS Series Trust IX, which was held on November 14, 2024, the following action was taken:

#### Item 1: To elect the following individuals as Trustees, effective January 1, 2025:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Number of Dollars** | &nbsp;&nbsp;&nbsp;**Number of Dollars** |
| **Nominee** | &nbsp;&nbsp;&nbsp;**For** | &nbsp;&nbsp;&nbsp;**Against/Withheld** |
| Steven E. Buller | &nbsp;&nbsp;&nbsp;16907334964.271 | &nbsp;&nbsp;&nbsp;564877606.664 |
| John A. Caroselli | &nbsp;&nbsp;&nbsp;16919748090.782 | &nbsp;&nbsp;&nbsp;552464480.153 |
| Maureen R. Goldfarb | &nbsp;&nbsp;&nbsp;16987867788.742 | &nbsp;&nbsp;&nbsp;484344782.193 |
| Peter D. Jones | &nbsp;&nbsp;&nbsp;16947211557.080 | &nbsp;&nbsp;&nbsp;525001013.855 |
| John P. Kavanaugh | &nbsp;&nbsp;&nbsp;16952477521.647 | &nbsp;&nbsp;&nbsp;519735049.288 |
| James W. Kilman, Jr. | &nbsp;&nbsp;&nbsp;16931150908.125 | &nbsp;&nbsp;&nbsp;541061662.810 |
| Clarence Otis, Jr. | &nbsp;&nbsp;&nbsp;16921309024.232 | &nbsp;&nbsp;&nbsp;550903546.702 |
| Michael W. Roberge | &nbsp;&nbsp;&nbsp;16956315372.901 | &nbsp;&nbsp;&nbsp;515897198.033 |
| Maryanne L. Roepke | &nbsp;&nbsp;&nbsp;16988422371.536 | &nbsp;&nbsp;&nbsp;483790199.398 |
| Paula E. Smith | &nbsp;&nbsp;&nbsp;17026175142.111 | &nbsp;&nbsp;&nbsp;446037428.824 |
| Laurie J. Thomsen | &nbsp;&nbsp;&nbsp;16991821354.292 | &nbsp;&nbsp;&nbsp;480391216.642 |
| Darrell A. Williams | &nbsp;&nbsp;&nbsp;16944148530.126 | &nbsp;&nbsp;&nbsp;528064040.808 |

---

------

MFS Limited Maturity Fund

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

The fund intends to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

------

#### ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
There is nothing to report for this item for MFS Limited Maturity Fund.

#### ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Limited Maturity 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 Limited Maturity Fund. See the Statement of Operations and Note 3 within the Notes to Financial Statements for more information.

#### ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.
Not Applicable.

------

MFS Municipal Limited Maturity Fund

#### ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
MFS Municipal Limited Maturity Fund

### Portfolio of Investments - 4/30/25
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by jurisdiction.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – 97.2% | Municipal Bonds – 97.2% | Municipal Bonds – 97.2% |
| Alabama – 4.3% | Alabama – 4.3% | Alabama – 4.3% |
| Alabama Community College System, Board of Trustees Rev. (Wallace State Community College - Hanceville Rev.), BAM, 3.5%, 11/01/2026 | $&nbsp;&nbsp;1245000 | &nbsp;&nbsp;$1248753 |
| Alabama Port Authority Docks Facilities Refunding Rev., "A", AGM, 5%, 10/01/2025 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1003408** |
| Auburn University, General Fee Rev., "A", 4%, 6/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;435000 | &nbsp;&nbsp;&nbsp; **426493** |
| Black Belt Energy Gas District, AL, Gas Prepay Rev., "A-1", 4%, 12/01/2049 (Put Date 12/01/2025) | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10008479** |
| Black Belt Energy Gas District, AL, Gas Project Rev., "A", 4%, 6/01/2051 (Put Date 12/01/2031) | &nbsp;&nbsp;6130000 | &nbsp;&nbsp;&nbsp;&nbsp; **6012864** |
| Black Belt Energy Gas District, AL, Gas Project Rev., "C", 5%, 5/01/2055 (Put Date 7/01/2031) | &nbsp;&nbsp;5665000 | &nbsp;&nbsp;&nbsp;&nbsp; **5918922** |
| Black Belt Energy Gas District, AL, Gas Project Rev., "C-1", 5.25%, 2/01/2053 (Put Date 6/01/2029) | &nbsp;&nbsp;7000000 | &nbsp;&nbsp;&nbsp;&nbsp; **7317258** |
| Black Belt Energy Gas District, AL, Gas Project Rev., "F", 5.5%, 11/01/2053 (Put Date 12/01/2028) | &nbsp;&nbsp;3795000 | &nbsp;&nbsp;&nbsp;&nbsp; **3955975** |
| Black Belt Energy Gas District, AL, Gas Supply Rev., "D-1", 4%, 7/01/2052 (Put Date 6/01/2027) | &nbsp;&nbsp;4270000 | &nbsp;&nbsp;&nbsp;&nbsp; **4267563** |
| Chatom, AL, Industrial Development Board Gulf Opportunity Zone (PowerSouth Energy), AGM, 5%, 8/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp; **852161** |
| Chatom, AL, Industrial Development Board Gulf Opportunity Zone (PowerSouth Energy), AGM, 5%, 8/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;610000 | &nbsp;&nbsp;&nbsp; **637395** |
| Houston County, AL, Health Care Authority (Southeast Alabama Medical Center), "A", 5%, 10/01/2025 | &nbsp;&nbsp;1165000 | &nbsp;&nbsp;&nbsp;&nbsp; **1169489** |
| Jefferson County, AL, Sewer Rev. Warrants, 5%, 10/01/2025 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1509111** |
| Jefferson County, AL, Sewer Rev. Warrants, 5%, 10/01/2026 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1536079** |
| Jefferson County, AL, Sewer Rev. Warrants, 5%, 10/01/2027 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1298326** |
| Mobile, AL, Industrial Development Board Pollution Control Rev. (Alabama Power Co. Barry Plant Project), "A", 1%, 6/01/2034 (Put Date 6/26/2025) | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2985276** |
| Mobile, AL, Industrial Development Board Pollution Control Rev. (Alabama Power Co. Barry Plant Project), "C", 3.78%, 6/01/2034 (Put Date 6/16/2026) | 11000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10993409** |
| Pell City, AL, Special Care Facilities Financing Authority Rev. (Noland Health Services, Inc.), "A", 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;785000 | &nbsp;&nbsp;&nbsp; **788745** |
| Phenix City, AL, Water & Sewer Rev., "A", BAM, 5%, 8/15/2025 | &nbsp;&nbsp;1140000 | &nbsp;&nbsp;&nbsp;&nbsp; **1143905** |
| Southeast Alabama Energy Authority Commodity Supply Rev. (Project No. 4), "B-1", 5%, 5/01/2053 (Put Date 8/01/2028) | &nbsp;&nbsp;3380000 | &nbsp;&nbsp;&nbsp;&nbsp; **3471731** |
| Southeast Alabama Energy Authority Commodity Supply Rev. (Project No. 5), "A", 5.25%, 1/01/2054 (Put Date 7/01/2029) | 12000000 | &nbsp;&nbsp;&nbsp;&nbsp; **12400068** |
| Southeast Alabama Energy Authority Commodity Supply Rev. (Project No. 6), 5%, 1/01/2054 (Put Date 6/01/2030) | &nbsp;&nbsp;6875000 | &nbsp;&nbsp;&nbsp;&nbsp; **7173855** |
| Southeast Alabama Energy Authority, Commodity Supply Rev. (Project No. 2), "A", 4%, 12/01/2051 (Put Date 12/01/2031) | &nbsp;&nbsp;7130000 | &nbsp;&nbsp;&nbsp;&nbsp; **7009781** |
| Southeast Alabama Energy Authority, Commodity Supply Rev. (Project No. 3), "A-1", 5.5%, 1/01/2053 (Put Date 12/01/2029) | &nbsp;&nbsp;3865000 | &nbsp;&nbsp;&nbsp;&nbsp; **4097021** |
| Southeast Alabama Energy Authority, Cooperative District Energy Supply Rev., "C", 5%, 10/01/2055 (Put Date 11/01/2032) | &nbsp;&nbsp;5465000 | &nbsp;&nbsp;&nbsp;&nbsp; **5730468** |
| Southeast Alabama Energy, Cooperative District Energy Supply Rev., "A-1", 5.5%, 11/01/2053 (Put Date 1/01/2031) | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10713371** |
| University of West Alabama, General Fee Rev., AGM, 5%, 1/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp; **102120** |
|  |  | &nbsp;&nbsp; **$113772026** |
| Arizona – 3.1% | Arizona – 3.1% | Arizona – 3.1% |
| Arizona Industrial Development Authority, Education Rev. (Great Hearts Arizona Projects), "A", 5%, 7/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;145000 | &nbsp;&nbsp;$145263 |
| Arizona Industrial Development Authority, Education Rev. (Great Hearts Arizona Projects), "A", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;160000 | &nbsp;&nbsp;&nbsp; **164105** |
| Arizona Industrial Development Authority, Education Rev. (Great Hearts Arizona Projects), "A", 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **129397** |
| Arizona Industrial Development Authority, Education Rev. (Great Hearts Arizona Projects), "A", 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **130372** |
| Arizona Industrial Development Authority, Education Rev. (Great Hearts Arizona Projects), "A", 5%, 7/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;135000 | &nbsp;&nbsp;&nbsp; **141622** |
| Arizona Industrial Development Authority, Education Rev. (Great Hearts Arizona Projects), "A", 5%, 7/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **131757** |
| Arizona Industrial Development Authority, Multi-Family Housing (Ironwood Ranch Apartments Project), 5%, 2/01/2058 (Put Date 9/01/2026) | &nbsp;&nbsp;5250000 | &nbsp;&nbsp;&nbsp;&nbsp; **5357743** |
| Arizona Industrial Development Authority, Multi-Family Housing Rev. (Unity at West Glendale Project), 5%, 3/01/2045 (Put Date 9/01/2026) | &nbsp;&nbsp;1033000 | &nbsp;&nbsp;&nbsp;&nbsp; **1048075** |
| Chandler, AZ, Industrial Development Authority Rev. (Intel Corp. Project), 4.1%, 12/01/2037 (Put Date 6/15/2028) | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp; **999509** |
| Chandler, AZ, Industrial Development Authority Rev. (Intel Corp. Project), 5%, 9/01/2052 (Put Date 9/01/2027) | 18845000 | &nbsp;&nbsp;&nbsp;&nbsp; **19139050** |
| Coconino County, AZ, Pollution Control Refunding Rev. (Nevada Power Co. Projects), "A", 4.125%, 9/01/2032 (Put Date 3/31/2026) | &nbsp;&nbsp;2085000 | &nbsp;&nbsp;&nbsp;&nbsp; **2081578** |
| Glendale, AZ, Industrial Development Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2025 | &nbsp;&nbsp;1400000 | &nbsp;&nbsp;&nbsp;&nbsp; **1402088** |

---

MTLFS-ANN

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Arizona – continued | Arizona – continued | Arizona – continued |
| Glendale, AZ, Industrial Development Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2026 | $&nbsp;&nbsp;1200000 | &nbsp;&nbsp;$1213355 |
| Glendale, AZ, Industrial Development Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;540000 | &nbsp;&nbsp;&nbsp;&nbsp; **546010** |
| Glendale, AZ, Industrial Development Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2027 | &nbsp;&nbsp;1120000 | &nbsp;&nbsp;&nbsp;&nbsp; **1141438** |
| Glendale, AZ, Industrial Development Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;720000 | &nbsp;&nbsp;&nbsp;&nbsp; **733781** |
| Glendale, AZ, Industrial Development Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 3%, 7/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;405000 | &nbsp;&nbsp;&nbsp;&nbsp; **369361** |
| La Paz County, AZ, Industrial Development Authority Education Facility, Lease Rev. (Charter School Solutions - Harmony Public Schools Project), "A", 5%, 2/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;565000 | &nbsp;&nbsp;&nbsp;&nbsp; **571163** |
| Maricopa County, AZ, Industrial Development Authority, Education Rev. (Legacy Traditional Schools Projects), "A", 4%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;&nbsp;&nbsp; **174840** |
| Maricopa County, AZ, Industrial Development Authority, Education Rev. (Legacy Traditional Schools Projects), "A", 4%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **200491** |
| Maricopa County, AZ, Industrial Development Authority, Education Rev. (Legacy Traditional Schools Projects), "A", 4%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **200389** |
| Maricopa County, AZ, Industrial Development Authority, Education Rev. (Legacy Traditional Schools Projects), "A", 4%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;&nbsp;&nbsp; **325287** |
| Maricopa County, AZ, Industrial Development Authority, Education Rev. (Legacy Traditional Schools Projects), "A", 4%, 7/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **249876** |
| Maricopa County, AZ, Pollution Control Corp. Rev. (Public Service Co. of New Mexico Palo Verde Project), "B", 0.875%, 6/01/2043 (Put Date 10/01/2026) | &nbsp;&nbsp;&nbsp;&nbsp;455000 | &nbsp;&nbsp;&nbsp;&nbsp; **434251** |
| Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Basis Schools Projects), "A", 4%, 7/01/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;270000 | &nbsp;&nbsp;&nbsp;&nbsp; **269517** |
| Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Great Hearts Academies Project), "A", 2.95%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;855000 | &nbsp;&nbsp;&nbsp;&nbsp; **843793** |
| Phoenix, AZ, Industrial Development Authority, Single Family Mortgage Rev., "A", GNMA, 6.5%, 3/01/2055 | &nbsp;&nbsp;5110000 | &nbsp;&nbsp;&nbsp;&nbsp; **5644264** |
| Phoenix, AZ, Industrial Development Authority, Solid Waste Disposal Rev. (Republic Services, Inc. Project), VRDN, 3.7%, 12/01/2035 (Put Date 5/01/2025) | 25000000 | &nbsp;&nbsp;&nbsp;&nbsp; **25000000** |
| Phoenix, AZ, Industrial Development Authority, Student Housing Refunding Rev. (Downtown Phoenix Student Housing LLC - Arizona State University Project), "A", 5%, 7/01/2026 | &nbsp;&nbsp;1115000 | &nbsp;&nbsp;&nbsp;&nbsp; **1124563** |
| Phoenix, AZ, Industrial Development Authority, Student Housing Refunding Rev. (Downtown Phoenix Student Housing LLC - Arizona State University Project), "A", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp;&nbsp; **608870** |
| Phoenix, AZ, Industrial Development Authority, Student Housing Refunding Rev. (Downtown Phoenix Student Housing LLC - Arizona State University Project), "A", 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **152889** |
| Pima County, AZ, Industrial Development Authority, Senior Living Rev. (La Posada at Pusch Ridge Project), "B3", 5.125%, 11/15/2029 (n) | &nbsp;&nbsp;2690000 | &nbsp;&nbsp;&nbsp;&nbsp; **2691309** |
| Pima County, AZ, Industrial Development Authority, Single Family Mortgage Rev., "B", GNMA, 6.5%, 1/01/2055 | &nbsp;&nbsp;6210000 | &nbsp;&nbsp;&nbsp;&nbsp; **6829057** |
| Tempe, AZ, Industrial Development Authority Rev. (Friendship Village of Tempe Project), "A", 4%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;275000 | &nbsp;&nbsp;&nbsp;&nbsp; **274059** |
|  |  | &nbsp;&nbsp; **$80469122** |
| Arkansas – 0.3% | Arkansas – 0.3% | Arkansas – 0.3% |
| Arkansas Development Finance Authority, Health Care Rev. (Baptist Memorial Health Care Corp.), "B-2", 5%, 9/01/2044 (Put Date 9/01/2027) | $&nbsp;&nbsp;6545000 | &nbsp;&nbsp;$6594617 |
| Arkansas Development Finance Authority, Healthcare Facilities Rev. (Carti Surgery Center Project), "B", 4%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **149740** |
| Arkansas Development Finance Authority, Healthcare Facilities Rev. (Carti Surgery Center Project), "B", 4%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;185000 | &nbsp;&nbsp;&nbsp;&nbsp; **183849** |
| Arkansas Development Finance Authority, Healthcare Facilities Rev. (Carti Surgery Center Project), "B", 4%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95000 | &nbsp;&nbsp;&nbsp; **94076** |
| Arkansas Development Finance Authority, Healthcare Facilities Rev. (Carti Surgery Center Project), "B", 4%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;230000 | &nbsp;&nbsp;&nbsp;&nbsp; **226639** |
| Conway, AR, Health Facilities Board, Hospital Improvement Rev. (Conway Regional Medical Center), 5%, 8/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;665000 | &nbsp;&nbsp;&nbsp;&nbsp; **675428** |
|  |  | &nbsp;&nbsp; **$7924349** |
| California – 6.7% | California – 6.7% | California – 6.7% |
| California Community Choice Financing Authority, Clean Energy Project Rev. (Green Bonds), "C", 5.25%, 1/01/2054 (Put Date 10/01/2031) | $17250000 | &nbsp;&nbsp;$17921603 |
| California Community Choice Financing Authority, Clean Energy Project Rev. (Green Bonds), "C", 5%, 8/01/2055 (Put Date 10/01/2032) | &nbsp;&nbsp;1875000 | &nbsp;&nbsp;&nbsp;&nbsp; **1965149** |
| California Community Choice Financing Authority, Clean Energy Project Rev. (Green Bonds), "F", 5.5%, 10/01/2054 (Put Date 11/01/2030) | &nbsp;&nbsp;7440000 | &nbsp;&nbsp;&nbsp;&nbsp; **7964193** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| California – continued | California – continued | California – continued |
| California Community Choice Financing Authority, Clean Energy Project Rev. (Green Bonds), "H", 5%, 1/01/2056 (Put Date 8/01/2033) | $12080000 | &nbsp;&nbsp;$12923487 |
| California County Tobacco Securitization Agency Settlement (Los Angeles County Securitization Corp.), "A", 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp;&nbsp; **350361** |
| California Housing Finance Agency, Multi-Family Housing (All Hallows Apartments), "U", FNMA, 3.65%, 9/01/2034 | &nbsp;&nbsp;2410000 | &nbsp;&nbsp;&nbsp;&nbsp; **2313190** |
| California Housing Finance Agency, Multi-Family Housing (La Salle Apartments), "V", FNMA, 3.65%, 9/01/2034 | &nbsp;&nbsp;1685000 | &nbsp;&nbsp;&nbsp;&nbsp; **1620641** |
| California Infrastructure & Economic Development Bank Refunding Rev. (Los Angeles County Museum of Art Project), "A", 1.2%, 12/01/2050 (Put Date 6/01/2028) | &nbsp;&nbsp;4560000 | &nbsp;&nbsp;&nbsp;&nbsp; **4101876** |
| California Infrastructure & Economic Development Bank Rev. (Colburn School), 1.75%, 8/01/2055 (Put Date 8/01/2026) | 11375000 | &nbsp;&nbsp;&nbsp;&nbsp; **11056103** |
| California Municipal Finance Authority Rev. (NorthBay Healthcare Group), "A", 5%, 11/01/2025 | &nbsp;&nbsp;1130000 | &nbsp;&nbsp;&nbsp;&nbsp; **1131963** |
| California Municipal Finance Authority Rev. (NorthBay Healthcare Group), "A", 5%, 11/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1008728** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **205858** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp;&nbsp; **129502** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp;&nbsp; **130488** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp;&nbsp; **420402** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **210297** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp;&nbsp; **236677** |
| California Municipal Finance Authority, COP (Palomar Health), "A", AGM, 5%, 11/01/2033 | &nbsp;&nbsp;1150000 | &nbsp;&nbsp;&nbsp;&nbsp; **1201875** |
| California Municipal Finance Authority, Solid Waste Disposal Rev. (Republic Services, Inc.), "A", 4.375%, 9/01/2053 (Put Date 9/01/2033) | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10014222** |
| California Municipal Finance Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), 3.75%, 10/01/2045 (Put Date 6/02/2025) | &nbsp;&nbsp;&nbsp;&nbsp;155000 | &nbsp;&nbsp;&nbsp;&nbsp; **154950** |
| California Municipal Finance Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), "A", 4.125%, 10/01/2041 (Put Date 10/01/2025) | &nbsp;&nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp;&nbsp; **450184** |
| California Municipal Finance Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), "A", 4.1%, 12/01/2044 (Put Date 12/01/2025) | &nbsp;&nbsp;&nbsp;&nbsp;530000 | &nbsp;&nbsp;&nbsp;&nbsp; **530831** |
| California Municipal Finance Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), "B", 4.8%, 11/01/2041 (Put Date 6/02/2025) | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1000307** |
| California Pollution Control Financing Authority, Solid Waste Disposal Rev. (Waste Management, Inc.), "A-1", 3.375%, 7/01/2025 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4993350** |
| California Public Finance Authority Rev. (Henry Mayo Newhall Hospital), "A", 4%, 10/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp;&nbsp; **398993** |
| California Public Finance Authority, Charter School Refunding Rev. (Aspire Public Schools - Obligated Group), 5%, 8/01/2035 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1000262** |
| California School Finance Authority, Charter School Refunding Rev. (Aspire Public Schools), 5%, 8/01/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;335000 | &nbsp;&nbsp;&nbsp;&nbsp; **335213** |
| California School Finance Authority, Charter School Refunding Rev. (Aspire Public Schools), 5%, 8/01/2026 (Prerefunded 8/01/2025) (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | &nbsp;&nbsp;&nbsp; **25081** |
| California School Finance Authority, Charter School Refunding Rev. (Aspire Public Schools), ETM, 5%, 8/01/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30000 | &nbsp;&nbsp;&nbsp; **30097** |
| California School Finance Authority, Charter School Rev. (Aspire Public Schools - Obligated Group), 5%, 8/01/2040 (n) | &nbsp;&nbsp;&nbsp;&nbsp;580000 | &nbsp;&nbsp;&nbsp;&nbsp; **562537** |
| California Statewide Communities Development Authority Rev. (California Baptist University), "A", 3.5%, 11/01/2027 (n) | &nbsp;&nbsp;2450000 | &nbsp;&nbsp;&nbsp;&nbsp; **2390667** |
| California Statewide Communities Development Authority Rev. (Loma Linda University Medical Center), "A", 5.25%, 12/01/2034 | 10115000 | &nbsp;&nbsp;&nbsp;&nbsp; **10119044** |
| California Statewide Communities Development Authority Rev. (University of California, Irvine East Campus Apartments), 5%, 5/15/2026 | &nbsp;&nbsp;1300000 | &nbsp;&nbsp;&nbsp;&nbsp; **1316088** |
| Central Valley, CA, Energy Authority, Commodity Supply Rev., 5%, 12/01/2055 (Put Date 8/01/2035) | &nbsp;&nbsp;2435000 | &nbsp;&nbsp;&nbsp;&nbsp; **2571382** |
| Los Angeles County, CA, Development Authority, Multi-Family Housing Mortgage Rev. (2111 Firestone), "E", 5%, 7/01/2043 (Put Date 7/01/2026) | &nbsp;&nbsp;2209000 | &nbsp;&nbsp;&nbsp;&nbsp; **2240557** |
| Los Angeles County, CA, El Rancho Unified School District, General Obligation Anticipation Notes, Capital Appreciation, 0%, 8/01/2028 | &nbsp;&nbsp;2500000 | &nbsp;&nbsp;&nbsp;&nbsp; **2231049** |
| Los Angeles, CA, Department of Airports Refunding Rev. (Los Angeles International), (Green Bonds), "A", 5%, 5/15/2032 | &nbsp;&nbsp;4000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4274885** |
| Los Angeles, CA, Department of Airports Refunding Rev. (Los Angeles International), (Green Bonds), "A", 5%, 5/15/2033 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3210730** |
| Los Angeles, CA, Department of Airports Refunding Rev. (Los Angeles International), (Green Bonds), "A", 5%, 5/15/2034 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3215737** |
| Los Angeles, CA, Department of Airports Rev. (Los Angeles International), "B", 5%, 5/15/2026 | &nbsp;&nbsp;1350000 | &nbsp;&nbsp;&nbsp;&nbsp; **1368283** |
| Los Angeles, CA, Housing Authority, Multi-Family Housing Rev. (M-TEBS) + (Homekey Portfolio), "B", 3.75%, 4/01/2034 | &nbsp;&nbsp;&nbsp;&nbsp;857706 | &nbsp;&nbsp;&nbsp;&nbsp; **835158** |
| Los Angeles, CA, Housing Authority, Multi-Family Housing Rev. (M-TEBS) + (Homekey Portfolio), "C", 3.75%, 4/01/2034 | &nbsp;&nbsp;2144266 | &nbsp;&nbsp;&nbsp;&nbsp; **2127552** |
| San Diego County, CA, Regional Airport Authority Rev., "B", 5%, 7/01/2027 | &nbsp;&nbsp;2905000 | &nbsp;&nbsp;&nbsp;&nbsp; **2995291** |
| San Francisco, CA, City & County Airports Commission, International Airport Rev. (SFO Fuel Company LLC), "A", 5%, 1/01/2027 | &nbsp;&nbsp;2205000 | &nbsp;&nbsp;&nbsp;&nbsp; **2254613** |
| San Francisco, CA, City & County Airports Commission, International Airport Rev., "A", 5%, 5/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;910000 | &nbsp;&nbsp;&nbsp;&nbsp; **951970** |
| San Francisco, CA, City & County Airports Commission, International Airport Rev., "A", 5%, 5/01/2030 | &nbsp;&nbsp;2370000 | &nbsp;&nbsp;&nbsp;&nbsp; **2496343** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| California – continued | California – continued | California – continued |
| San Francisco, CA, City & County Airports Commission, International Airport Rev., "A", AGM, 5%, 5/01/2033 | $16500000 | &nbsp;&nbsp;$17564794 |
| San Francisco, CA, City & County Airports Commission, Second Series Rev., "C", 5.25%, 5/01/2035 | &nbsp;&nbsp;7500000 | &nbsp;&nbsp;&nbsp;&nbsp; **8108401** |
| San Francisco, CA, City & County Airports Commission, Second Series Rev., "C", 5.25%, 5/01/2036 | &nbsp;&nbsp;4500000 | &nbsp;&nbsp;&nbsp;&nbsp; **4834602** |
| San Ramon, CA, Public Financing Authority, Capital Appreciation, "A", AAC, 0%, 2/01/2026 | &nbsp;&nbsp;1690000 | &nbsp;&nbsp;&nbsp;&nbsp; **1642758** |
| Southern California Public Power Authority, Clean Energy Project Rev., "A", 5%, 4/01/2055 (Put Date 9/01/2030) | &nbsp;&nbsp;2740000 | &nbsp;&nbsp;&nbsp;&nbsp; **2849296** |
| Transbay Joint Powers Authority, CA, Senior Tax Allocation, "A", 5%, 10/01/2026 | &nbsp;&nbsp;1150000 | &nbsp;&nbsp;&nbsp;&nbsp; **1169592** |
| Transbay Joint Powers Authority, CA, Senior Tax Allocation, "A", 5%, 10/01/2028 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1033288** |
| Transbay Joint Powers Authority, CA, Senior Tax Allocation, "A", 5%, 10/01/2029 | &nbsp;&nbsp;1100000 | &nbsp;&nbsp;&nbsp;&nbsp; **1141215** |
| Vernon, CA, Electric System Rev., "A", 5%, 4/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1014859** |
| Vernon, CA, Electric System Rev., "A", 5%, 4/01/2027 | &nbsp;&nbsp;3380000 | &nbsp;&nbsp;&nbsp;&nbsp; **3474854** |
| Vernon, CA, Electric System Rev., "A", 5%, 10/01/2027 | &nbsp;&nbsp;4500000 | &nbsp;&nbsp;&nbsp;&nbsp; **4656257** |
|  |  | &nbsp;&nbsp; **$176477685** |
| Colorado – 2.2% | Colorado – 2.2% | Colorado – 2.2% |
| Arvada, CO, Vauxmont Metropolitan District Rev., AGM, 5%, 12/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;$176509 |
| Arvada, CO, Vauxmont Metropolitan District Rev., AGM, 5%, 12/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **126327** |
| Arvada, CO, Vauxmont Metropolitan District Rev., AGM, 5%, 12/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;135000 | &nbsp;&nbsp;&nbsp; **138553** |
| Colorado Educational & Cultural Facilities Authority Rev. (Classical Academy Project), "A", 5%, 12/01/2029 | &nbsp;&nbsp;1040000 | &nbsp;&nbsp;&nbsp;&nbsp; **1040749** |
| Colorado Educational & Cultural Facilities Authority Rev. (Colorado Springs Charter Academy Project), 5.25%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;930000 | &nbsp;&nbsp;&nbsp; **931499** |
| Colorado Educational & Cultural Facilities Authority Rev. (Pinnacle Charter School Building Corp.), 5%, 6/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;630000 | &nbsp;&nbsp;&nbsp; **630555** |
| Colorado Health Facilities Authority Rev. (AdventHealth), "B", 5%, 11/15/2049 (Put Date 11/19/2026) | 17720000 | &nbsp;&nbsp;&nbsp;&nbsp; **18030314** |
| Colorado Health Facilities Authority Rev. (Christian Living Neighborhoods), 4%, 1/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;320000 | &nbsp;&nbsp;&nbsp; **318489** |
| Colorado Health Facilities Authority Rev. (Christian Living Neighborhoods), 4%, 1/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;495000 | &nbsp;&nbsp;&nbsp; **490935** |
| Colorado Health Facilities Authority Rev. (Christian Living Neighborhoods), 4%, 1/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;460000 | &nbsp;&nbsp;&nbsp; **454196** |
| Colorado Health Facilities Authority Rev. (Christian Living Neighborhoods), 4%, 1/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;430000 | &nbsp;&nbsp;&nbsp; **422962** |
| Colorado Health Facilities Authority Rev. (Christian Living Neighborhoods), 4%, 1/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **488905** |
| Colorado Health Facilities Authority Rev. (Christian Living Neighborhoods), 4%, 1/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;960000 | &nbsp;&nbsp;&nbsp; **931753** |
| Colorado Health Facilities Authority Rev. (CommonSpirit Health), "A", 5.25%, 11/01/2034 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1084981** |
| Colorado Health Facilities Authority Rev. (CommonSpirit Health), "A", 5.25%, 11/01/2035 | &nbsp;&nbsp;1200000 | &nbsp;&nbsp;&nbsp;&nbsp; **1293510** |
| Colorado Health Facilities Authority Rev. (CommonSpirit Health), "A-1", 5%, 8/01/2026 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1532568** |
| Colorado Health Facilities Authority Rev. (CommonSpirit Health), "A-2", 5%, 8/01/2026 | &nbsp;&nbsp;2160000 | &nbsp;&nbsp;&nbsp;&nbsp; **2206898** |
| Colorado Regional Transportation District (Denver Transit Partners Eagle P3 Project), "A", 5%, 7/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp; **400719** |
| Colorado Regional Transportation District (Denver Transit Partners Eagle P3 Project), "A", 3%, 1/15/2026 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1491844** |
| Colorado Regional Transportation District (Denver Transit Partners Eagle P3 Project), "A", 5%, 7/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **304755** |
| Colorado Regional Transportation District (Denver Transit Partners Eagle P3 Project), "A", 5%, 1/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **511083** |
| Colorado Regional Transportation District (Denver Transit Partners Eagle P3 Project), "A", 5%, 7/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp; **615748** |
| Denver, CO, City & County Airport System Rev., "A", 5%, 11/15/2027 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5180059** |
| Denver, CO, City & County Airport System Rev., "A", 5%, 11/15/2028 | 14000000 | &nbsp;&nbsp;&nbsp;&nbsp; **14677314** |
| Denver, CO, Convention Center Hotel Authority Rev., 5%, 12/01/2025 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2000876** |
| Park Creek Metropolitan District, CO, Senior Limited Property Tax Supported Rev., "A", NPFG, 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **504022** |
| Park Creek Metropolitan District, CO, Senior Limited Property Tax Supported Rev., "A", NPFG, 5%, 12/01/2027 | &nbsp;&nbsp;1270000 | &nbsp;&nbsp;&nbsp;&nbsp; **1298572** |
|  |  | &nbsp;&nbsp; **$57284695** |
| Connecticut – 0.9% | Connecticut – 0.9% | Connecticut – 0.9% |
| Connecticut Health & Educational Facilities Authority Rev. (Masonicare), "F", 4%, 7/01/2030 | $&nbsp;&nbsp;3000000 | &nbsp;&nbsp;$2887461 |
| Connecticut Higher Education Supplemental Loan Authority Rev. (Chesla Loan Program), "B", 5%, 11/15/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1015217** |
| Connecticut Higher Education Supplemental Loan Authority Rev. (Chesla Loan Program), "B", 5%, 11/15/2027 | &nbsp;&nbsp;1440000 | &nbsp;&nbsp;&nbsp;&nbsp; **1471040** |
| Connecticut Higher Education Supplemental Loan Authority Rev. (Chesla Loan Program), "B", 5%, 11/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;890000 | &nbsp;&nbsp;&nbsp; **915382** |
| Connecticut Higher Education Supplemental Loan Authority Rev. (Chesla Loan Program), "B", 5%, 11/15/2029 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2066954** |
| Connecticut Higher Education Supplemental Loan Authority Rev. (Chesla Loan Program), "B", 5%, 11/15/2030 | &nbsp;&nbsp;2030000 | &nbsp;&nbsp;&nbsp;&nbsp; **2109034** |
| Connecticut Housing Finance Authority (Housing Mortgage Finance Program), "C-2", 4.4%, 5/15/2066 (Put Date 11/15/2026) | &nbsp;&nbsp;5500000 | &nbsp;&nbsp;&nbsp;&nbsp; **5504133** |
| Connecticut Housing Finance Authority (Housing Mortgage Finance Program), "E-3", 3.35%, 11/15/2066 (Put Date 5/15/2027) | &nbsp;&nbsp;1300000 | &nbsp;&nbsp;&nbsp;&nbsp; **1297176** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Connecticut – continued | Connecticut – continued | Connecticut – continued |
| Stamford, CT, Housing Authority Rev. (Mozaic Concierge Living Project), "D", 4.25%, 10/01/2030 | $5210000 | &nbsp;&nbsp;$5174581 |
|  |  | &nbsp;&nbsp; **$22440978** |
| Delaware – 0.2% | Delaware – 0.2% | Delaware – 0.2% |
| Delaware Economic Development Authority Rev. (Newark Charter School, Inc.), "A", 2.8%, 9/01/2026 | $&nbsp;&nbsp;&nbsp;110000 | &nbsp;&nbsp;$108242 |
| Delaware Economic Development Authority, Gas Facilities Rev. (Delmarva Power and Light Co. Project), "A", 1.05%, 1/01/2031 (Put Date 7/01/2025) | 5985000 | &nbsp;&nbsp;&nbsp;&nbsp; **5947372** |
|  |  | &nbsp;&nbsp; **$6055614** |
| District of Columbia – 0.8% | District of Columbia – 0.8% | District of Columbia – 0.8% |
| District of Columbia, Housing Finance Agency (Belmont Crossing Phase II), 5%, 3/01/2029 (Put Date 2/01/2028) | $1285000 | &nbsp;&nbsp;$1337705 |
| District of Columbia, Housing Finance Agency, Collateralized Multi-Family Housing Rev. (Cascade Park Apartments II Project), 3.55%, 8/01/2042 (Put Date 8/01/2025) | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2995915** |
| District of Columbia, Housing Finance Agency, Multi-Family Development Program, "B-2", 3%, 9/01/2028 (Put Date 9/01/2026) | 5350000 | &nbsp;&nbsp;&nbsp;&nbsp; **5309969** |
| District of Columbia, Housing Finance Agency, Multi-Family Housing Mortgage Rev. (Edmonson), 5%, 12/01/2028 (Put Date 12/01/2027) | 4673000 | &nbsp;&nbsp;&nbsp;&nbsp; **4856425** |
| Metropolitan Washington, D.C., Airport Authority System Rev., "A", 5%, 10/01/2027 | 7000000 | &nbsp;&nbsp;&nbsp;&nbsp; **7240829** |
|  |  | &nbsp;&nbsp; **$21740843** |
| Florida – 3.8% | Florida – 3.8% | Florida – 3.8% |
| Broward County, FL, Multi-Family Housing Rev. (Pinnacle 441 Phase 2 LLC), 4.05%, 9/01/2056 (Put Date 3/01/2026) | $3000000 | &nbsp;&nbsp;$3013775 |
| Charlotte and Lee Counties, FL, Babcock Ranch Community Independent Special District, Special Assessment Rev., 4.3%, 5/01/2031 | &nbsp;&nbsp;&nbsp;735000 | &nbsp;&nbsp;&nbsp; **729455** |
| Escambia County, FL, Housing Finance Authority Multi-Family Housing Rev. (Hollowbrook Apartments), 3.8%, 6/01/2027 (Put Date 6/01/2026) | 4500000 | &nbsp;&nbsp;&nbsp;&nbsp; **4518103** |
| Florida Development Finance Corp., Educational Facilities Rev. (Mater Academy Projects), "A", 5%, 6/15/2025 | &nbsp;&nbsp;&nbsp;430000 | &nbsp;&nbsp;&nbsp; **430024** |
| Florida Development Finance Corp., Educational Facilities Rev. (Mater Academy Projects), "A", 5%, 6/15/2027 | &nbsp;&nbsp;&nbsp;565000 | &nbsp;&nbsp;&nbsp; **578763** |
| Florida Development Finance Corp., Educational Facilities Rev. (Mater Academy Projects), "A", 5%, 6/15/2029 | &nbsp;&nbsp;&nbsp;940000 | &nbsp;&nbsp;&nbsp; **960629** |
| Florida Development Finance Corp., Educational Facilities Rev. (Mater Academy Projects), "A", 5%, 6/15/2031 | 1040000 | &nbsp;&nbsp;&nbsp;&nbsp; **1059667** |
| Florida Development Finance Corp., Educational Facilities Rev. (Nova Southeastern University Project), "A", 5%, 4/01/2026 | &nbsp;&nbsp;&nbsp;285000 | &nbsp;&nbsp;&nbsp; **288751** |
| Florida Development Finance Corp., Senior Living Rev. (Mayflower Retirement Community Project), "A", 4%, 6/01/2027 (n) | 1270000 | &nbsp;&nbsp;&nbsp;&nbsp; **1248275** |
| Florida Development Finance Corp., Senior Living Rev. (Mayflower Retirement Community Project), "A", 4%, 6/01/2028 (n) | &nbsp;&nbsp;&nbsp;825000 | &nbsp;&nbsp;&nbsp; **804551** |
| Florida Development Finance Corp., Solid Waste Disposal Rev. (GFL Solid Waste Southeast LLC Project), "A", 4.375%, 10/01/2054 (Put Date 10/01/2031) | 3415000 | &nbsp;&nbsp;&nbsp;&nbsp; **3390567** |
| Florida Higher Educational Facilities Financing Authority Rev. (Florida Institute of Technology), 5%, 10/01/2027 | &nbsp;&nbsp;&nbsp;480000 | &nbsp;&nbsp;&nbsp; **491278** |
| Florida Higher Educational Facilities Financing Authority Rev. (Florida Institute of Technology), 5%, 10/01/2028 | 1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1546115** |
| Florida Higher Educational Facilities Financing Authority Rev. (Florida Institute of Technology), 5%, 10/01/2029 | 1295000 | &nbsp;&nbsp;&nbsp;&nbsp; **1342022** |
| Florida Higher Educational Facilities Financing Authority Rev. (Florida Institute of Technology), 5%, 10/01/2030 | 1990000 | &nbsp;&nbsp;&nbsp;&nbsp; **2057019** |
| Florida Housing Finance Corp., Homeowner Mortgage Rev., "1", GNMA, 5%, 1/01/2026 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **505870** |
| Florida Housing Finance Corp., Homeowner Mortgage Rev., "1", GNMA, 5%, 1/01/2028 | &nbsp;&nbsp;&nbsp;135000 | &nbsp;&nbsp;&nbsp; **140949** |
| Florida Housing Finance Corp., Multi-Family Mortgage Rev. (Culmer Apartments), "C", 5%, 12/01/2026 (Put Date 12/01/2025) | 2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2015563** |
| Florida Housing Finance Corp., Multi-Family Mortgage Rev. (Hampton Point Apartments), "E", VRDN, 5%, 5/01/2026 (Put Date 5/01/2025) | 5600000 | &nbsp;&nbsp;&nbsp;&nbsp; **5600000** |
| Florida Housing Finance Corp., Multi-Family Mortgage Rev. (Northside Transit Village III), "B", GNMA, 5%, 2/01/2027 (Put Date 2/01/2026) | 4050000 | &nbsp;&nbsp;&nbsp;&nbsp; **4093432** |
| Greater Orlando, FL, Aviation Authority Airport Facilities Rev., "A", 5%, 10/01/2027 | 1375000 | &nbsp;&nbsp;&nbsp;&nbsp; **1425538** |
| Greater Orlando, FL, Aviation Authority Airport Facilities Rev., "A", 5%, 10/01/2030 | 1375000 | &nbsp;&nbsp;&nbsp;&nbsp; **1462022** |
| Greater Orlando, FL, Aviation Authority Airport Facilities Rev., "A", 5%, 10/01/2031 | 2500000 | &nbsp;&nbsp;&nbsp;&nbsp; **2500934** |
| Greater Orlando, FL, Aviation Authority, Airport Facilities Rev., 5%, 10/01/2032 | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3217976** |
| Greater Orlando, FL, Aviation Authority, Airport Facilities Rev., 5%, 10/01/2033 | 4250000 | &nbsp;&nbsp;&nbsp;&nbsp; **4570727** |
| Greater Orlando, FL, Aviation Authority, Airport Facilities Rev., 5%, 10/01/2034 | 3500000 | &nbsp;&nbsp;&nbsp;&nbsp; **3759858** |
| Lakewood Ranch Stewardship District, FL, Special Assessment Rev. (Taylor Ranch Project), 5.4%, 5/01/2028 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **505237** |
| Lee County, FL, Airport Rev., "B", 5%, 10/01/2026 | 1660000 | &nbsp;&nbsp;&nbsp;&nbsp; **1694731** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Florida – continued | Florida – continued | Florida – continued |
| Lee County, FL, Industrial Development Authority, Healthcare Facilities Rev. (Shell Point Obligated Group), "B-3", 4.125%, 11/15/2029 | $&nbsp;&nbsp;5000000 | &nbsp;&nbsp;$4963686 |
| Miami-Dade County, FL, Aviation Rev., "A", 5%, 10/01/2034 | 19000000 | &nbsp;&nbsp;&nbsp;&nbsp; **20242051** |
| Miami-Dade County, FL, Aviation Rev., "A", 5%, 10/01/2038 | &nbsp;&nbsp;1145000 | &nbsp;&nbsp;&nbsp;&nbsp; **1145484** |
| Miami-Dade County, FL, Housing Finance Authority Multi-Family Rev. (Cutler Vista Housing LP), 5%, 3/01/2027 (Put Date 9/01/2025) | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3009694** |
| Miami-Dade County, FL, Housing Finance Authority Multi-Family Rev. (Emerald Dunes), "B", 4.05%, 9/01/2026 (Put Date 9/01/2025) | &nbsp;&nbsp;1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1751092** |
| Miami-Dade County, FL, Housing Finance Authority Multi-Family Rev. (St. Mary Towers Apartments), 3.4%, 4/01/2041 (Put Date 10/01/2026) | &nbsp;&nbsp;1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1748610** |
| Miami-Dade County, FL, Housing Finance Authority, Multi-Family Rev. (Quail Roost Transit Village I), HUD Section 8, 5%, 9/01/2026 (Put Date 9/01/2025) | &nbsp;&nbsp;4250000 | &nbsp;&nbsp;&nbsp;&nbsp; **4268546** |
| Miami-Dade County, FL, Industrial Development Authority Rev. (Doral Academy Project), 5%, 1/15/2032 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1011972** |
| Miami-Dade County, FL, Seaport Refunding Rev., "A", 5%, 10/01/2035 | &nbsp;&nbsp;1650000 | &nbsp;&nbsp;&nbsp;&nbsp; **1705312** |
| Orange County, FL, Health Facilities Authority Rev. (AdventHealth Obligated Group), "C", ETM, 5%, 11/15/2052 (Prerefunded 11/15/2026) | &nbsp;&nbsp;1140000 | &nbsp;&nbsp;&nbsp;&nbsp; **1171613** |
| Palm Beach County, FL, Health Facilities Authority Hospital Rev. (Jupiter Medical Center Project), "A", 5%, 11/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **155402** |
| Palm Beach County, FL, Health Facilities Authority Hospital Rev. (Jupiter Medical Center Project), "A", 5%, 11/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp; **208781** |
| Palm Beach County, FL, Health Facilities Authority Hospital Rev. (Jupiter Medical Center Project), "A", 5%, 11/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp; **210201** |
| Palm Beach County, FL, Health Facilities Authority Hospital Rev. (Jupiter Medical Center Project), "A", 5%, 11/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp; **211349** |
| Palm Beach County, FL, Health Facilities Authority Hospital Rev. (Jupiter Medical Center Project), "A", 5%, 11/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp; **264624** |
| Pasco County, FL, School Board Refunding Certificates of Participation, "A", 5%, 8/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp; **100353** |
| St. John's County, FL, Industrial Development Authority, Senior Living Rev. (Vicars Landing Project), "A", 4%, 12/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;180000 | &nbsp;&nbsp;&nbsp; **178368** |
| Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), "B", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp; **100166** |
| Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), "B", 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp; **101651** |
| Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), "B", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;180000 | &nbsp;&nbsp;&nbsp; **185975** |
| Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), "B", 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp; **237929** |
| Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), "B", 5%, 7/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp; **267049** |
| Tampa, FL, Hospital Rev. (H. Lee Moffitt Cancer Center Project), "B", 5%, 7/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **318215** |
| Venice, FL, Retirement Community Improvement Rev. (Village on the Isle Project), "B2", 4.5%, 1/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;670000 | &nbsp;&nbsp;&nbsp; **663528** |
| Venice, FL, Retirement Community Improvement Rev. (Village on the Isle Project), "B-3", 4.25%, 1/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;&nbsp; **891259** |
| Wildwood, FL, Middleton Community Development District A, Special Assessment Rev., 3.7%, 5/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **493800** |
| Wildwood, FL, Middleton Community Development District A, Special Assessment Rev., 4%, 5/01/2034 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **487835** |
| Wildwood, FL, Middleton Community Development District A, Special Assessment Rev., 4.2%, 5/01/2039 | &nbsp;&nbsp;&nbsp;&nbsp;395000 | &nbsp;&nbsp;&nbsp; **378496** |
| Wildwood, FL, Special Assessment Rev. (Village Community Development District No. 15), 3.75%, 5/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **739622** |
| Wildwood, FL, Special Assessment Rev. (Village Community Development District No. 15), 4%, 5/01/2034 | &nbsp;&nbsp;&nbsp;&nbsp;130000 | &nbsp;&nbsp;&nbsp; **126082** |
|  |  | &nbsp;&nbsp; **$101290576** |
| Georgia – 4.1% | Georgia – 4.1% | Georgia – 4.1% |
| Atlanta, GA, Airport General Rev., "B", 5%, 7/01/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;645000 | &nbsp;&nbsp;$695974 |
| Atlanta, GA, Airport General Rev., "B", 5%, 7/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;790000 | &nbsp;&nbsp;&nbsp; **847041** |
| Atlanta, GA, Development Authority Rev. (Westside Gulch Area Project), "A-1", 5%, 4/01/2034 (n) | &nbsp;&nbsp;1815000 | &nbsp;&nbsp;&nbsp;&nbsp; **1781886** |
| Atlanta, GA, Development Authority Rev. (Westside Gulch Area Project), "A-2", 5.5%, 4/01/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;740000 | &nbsp;&nbsp;&nbsp; **742089** |
| Atlanta, GA, Geo. L. Smith II World Congress Center Authority Convention Center Hotel Rev., "A", 2.375%, 1/01/2031 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp; **908490** |
| Atlanta, GA, Urban Residential Finance Authority, Multi-Family Housing Rev. (North Block), HUD Section 8, 3.4%, 2/01/2029 (Put Date 2/01/2028) | &nbsp;&nbsp;2213000 | &nbsp;&nbsp;&nbsp;&nbsp; **2209897** |
| Atlanta, GA, Urban Residential Finance Authority, Multi-Family Housing Rev. (Skyline Apartments), 3.75%, 9/01/2025 | &nbsp;&nbsp;2125000 | &nbsp;&nbsp;&nbsp;&nbsp; **2123899** |
| Bartow County, GA, Development Authority Pollution Control Rev. (Georgia Power Co. Plant Bowen Project), 3.95%, 12/01/2032 (Put Date 3/08/2028) | &nbsp;&nbsp;6245000 | &nbsp;&nbsp;&nbsp;&nbsp; **6324012** |
| Bartow County, GA, Development Authority Pollution Control Rev. (Georgia Power Co. Plant Bowen Project), 2.875%, 8/01/2043 (Put Date 8/19/2025) | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1993077** |
| Burke County, GA, Development Authority, Pollution Control Rev. (Georgia Power Co. Plant Vogtle Project), 3.8%, 10/01/2032 (Put Date 5/21/2026) | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **753838** |
| Columbus, GA, Housing Authority, Multi-Family Housing Rev. (HACG RAD II Project), 3.3%, 11/01/2028 (Put Date 11/01/2027) | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1497259** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Georgia – continued | Georgia – continued | Georgia – continued |
| Decatur, GA, Housing Authority, Multi-Family Housing Rev. (Calvin Court Project), HUD Section 8, 3.6%, 8/01/2028 (Put Date 8/01/2027) | $&nbsp;&nbsp;2724000 | &nbsp;&nbsp;$2734373 |
| DeKalb County, GA, Development Authority Rev. (Globe Academy, Inc. Project), "A", 4%, 6/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **474537** |
| DeKalb County, GA, Housing Authority, Affordable Multi-Family Rev. (Park at 500 Project), 4%, 3/01/2034 | 12880000 | &nbsp;&nbsp;&nbsp;&nbsp; **12582905** |
| DeKalb County, GA, Housing Authority, Multi-Family Housing Rev. (Tranquility at Decatur Project), "B", 3.4%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;378000 | &nbsp;&nbsp;&nbsp; **377144** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "A", 5%, 6/01/2053 (Put Date 6/01/2030) | &nbsp;&nbsp;9500000 | &nbsp;&nbsp;&nbsp;&nbsp; **9827818** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "A", 5%, 6/01/2055 (Put Date 6/01/2032) | &nbsp;&nbsp;4295000 | &nbsp;&nbsp;&nbsp;&nbsp; **4533870** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "B", 5%, 12/01/2052 (Put Date 6/01/2029) | &nbsp;&nbsp;8845000 | &nbsp;&nbsp;&nbsp;&nbsp; **9142066** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "C", 4%, 3/01/2050 (Put Date 9/01/2026) | &nbsp;&nbsp;1765000 | &nbsp;&nbsp;&nbsp;&nbsp; **1765378** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "C", 4%, 5/01/2052 (Put Date 12/01/2028) | 15095000 | &nbsp;&nbsp;&nbsp;&nbsp; **15031100** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "C", 5%, 9/01/2053 (Put Date 9/01/2030) | &nbsp;&nbsp;8325000 | &nbsp;&nbsp;&nbsp;&nbsp; **8704002** |
| Georgia Main Street Natural Gas, Inc., Gas Supply Rev., "D", 5%, 4/01/2054 (Put Date 4/01/2031) | &nbsp;&nbsp;8635000 | &nbsp;&nbsp;&nbsp;&nbsp; **9068537** |
| Monroe County, GA, Development Authority Pollution Control Rev. (Georgia Power Co. Plant Scherer Project), 2.25%, 7/01/2025 | &nbsp;&nbsp;5500000 | &nbsp;&nbsp;&nbsp;&nbsp; **5477216** |
| Monroe County, GA, Development Authority Pollution Control Rev. (Oglethorpe Power Corp. Scherer Project), "A", 3.6%, 1/01/2039 (Put Date 2/01/2030) | &nbsp;&nbsp;9000000 | &nbsp;&nbsp;&nbsp;&nbsp; **8924146** |
|  |  | &nbsp;&nbsp; **$108520554** |
| Guam – 0.2% | Guam – 0.2% | Guam – 0.2% |
| Guam Government Business Privilege Tax Refunding, "F", 5%, 1/01/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;$410285 |
| Guam International Airport Authority Rev., Taxable (A.B. Won Pat Airport), "A", 2.899%, 10/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;840000 | &nbsp;&nbsp;&nbsp; **812434** |
| Guam International Airport Authority Rev., Taxable (A.B. Won Pat Airport), "A", 3.099%, 10/01/2028 | &nbsp;&nbsp;1880000 | &nbsp;&nbsp;&nbsp;&nbsp; **1800921** |
| Guam International Airport Authority Rev., Taxable (A.B. Won Pat Airport), "A", 3.339%, 10/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;615000 | &nbsp;&nbsp;&nbsp; **573402** |
| Guam International Airport Authority Rev., Taxable (A.B. Won Pat Airport), "A", 3.489%, 10/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp; **414046** |
| Guam International Airport Authority Rev., Taxable, "A", 2.499%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp; **223070** |
| Guam International Airport Authority Rev., Taxable, "A", 2.499%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;315000 | &nbsp;&nbsp;&nbsp; **312361** |
|  |  | &nbsp;&nbsp; **$4546519** |
| Hawaii – 0.0% | Hawaii – 0.0% | Hawaii – 0.0% |
| Hawaii Harbor System Rev., "A", 5%, 7/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;$350641 |
| Hawaii Harbor System Rev., "A", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp; **258034** |
| Hawaii Harbor System Rev., "A", 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **526748** |
|  |  | &nbsp;&nbsp; **$1135423** |
| Idaho – 0.3% | Idaho – 0.3% | Idaho – 0.3% |
| Idaho Health Facilities Authority Rev. (St. Luke's Health System Project), "A", 5%, 3/01/2026 | $&nbsp;&nbsp;2000000 | &nbsp;&nbsp;$2028733 |
| Idaho Health Facilities Authority Rev. (St. Luke's Health System Project), "C", 5%, 3/01/2060 (Put Date 3/01/2035) | &nbsp;&nbsp;5450000 | &nbsp;&nbsp;&nbsp;&nbsp; **5920897** |
|  |  | &nbsp;&nbsp; **$7949630** |
| Illinois – 7.9% | Illinois – 7.9% | Illinois – 7.9% |
| Bolingbrook, IL, Special Service Areas Taxes, AGM, 4%, 3/01/2027 | $&nbsp;&nbsp;1500000 | &nbsp;&nbsp;$1518061 |
| Chicago, IL, "A", 5%, 1/01/2029 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3107804** |
| Chicago, IL, "A", 5%, 1/01/2031 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2042589** |
| Chicago, IL, Board of Education (School Reform), Capital Appreciation, "A", NPFG, 0%, 12/01/2028 | &nbsp;&nbsp;4435000 | &nbsp;&nbsp;&nbsp;&nbsp; **3814405** |
| Chicago, IL, Board of Education (School Reform), Capital Appreciation, "B-1", NPFG, 0%, 12/01/2026 | &nbsp;&nbsp;1925000 | &nbsp;&nbsp;&nbsp;&nbsp; **1805065** |
| Chicago, IL, Board of Education, Dedicated Capital Improvement, 6.1%, 4/01/2036 | &nbsp;&nbsp;7740000 | &nbsp;&nbsp;&nbsp;&nbsp; **7992366** |
| Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5.25%, 4/01/2033 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1622056** |
| Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5.25%, 4/01/2034 | &nbsp;&nbsp;1345000 | &nbsp;&nbsp;&nbsp;&nbsp; **1447660** |
| Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5.75%, 4/01/2034 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5142005** |
| Chicago, IL, Board of Education, Dedicated Capital Improvement Tax Bond, 5.75%, 4/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;825000 | &nbsp;&nbsp;&nbsp; **847609** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", 5%, 12/01/2034 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5102655** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", 5.25%, 12/01/2035 | &nbsp;&nbsp;7145000 | &nbsp;&nbsp;&nbsp;&nbsp; **7372485** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", 7%, 12/01/2044 | &nbsp;&nbsp;6070000 | &nbsp;&nbsp;&nbsp;&nbsp; **6117928** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", AAC, 5.5%, 12/01/2028 | &nbsp;&nbsp;1685000 | &nbsp;&nbsp;&nbsp;&nbsp; **1727004** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Illinois – continued | Illinois – continued | Illinois – continued |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", AAC, 5.5%, 12/01/2029 | $&nbsp;&nbsp;1120000 | &nbsp;&nbsp;$1153184 |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", AAC, 5.5%, 12/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;845000 | &nbsp;&nbsp;&nbsp; **873918** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Dedicated Rev., "A", AAC, 5.5%, 12/01/2031 | &nbsp;&nbsp;2315000 | &nbsp;&nbsp;&nbsp;&nbsp; **2399218** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., "A", 5%, 12/01/2029 | &nbsp;&nbsp;1260000 | &nbsp;&nbsp;&nbsp;&nbsp; **1291837** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., "A", AGM, 5%, 12/01/2025 | &nbsp;&nbsp;2500000 | &nbsp;&nbsp;&nbsp;&nbsp; **2515660** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., "A", AGM, 5%, 12/01/2026 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3059665** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., "A", AGM, 5%, 12/01/2027 | &nbsp;&nbsp;2750000 | &nbsp;&nbsp;&nbsp;&nbsp; **2825930** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., "A", AGM, 5%, 12/01/2028 | &nbsp;&nbsp;2250000 | &nbsp;&nbsp;&nbsp;&nbsp; **2327833** |
| Chicago, IL, Board of Education, Unlimited Tax General Obligation Refunding Dedicated Rev., "C", AGM, 5%, 12/01/2027 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10281067** |
| Chicago, IL, City Colleges Capital Improvement Project, Capital Appreciation, NPFG, 0%, 1/01/2026 | &nbsp;&nbsp;6640000 | &nbsp;&nbsp;&nbsp;&nbsp; **6485039** |
| Chicago, IL, General Obligation, "A", 5%, 1/01/2028 | &nbsp;&nbsp;4265000 | &nbsp;&nbsp;&nbsp;&nbsp; **4382061** |
| Chicago, IL, General Obligation, "A", 5%, 1/01/2029 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1035935** |
| Chicago, IL, General Obligation, "A", 5%, 1/01/2033 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1044453** |
| Chicago, IL, General Obligation, "A", 5%, 1/01/2034 | &nbsp;&nbsp;7000000 | &nbsp;&nbsp;&nbsp;&nbsp; **7260536** |
| Chicago, IL, Metropolitan Pier & Exposition Authority, Dedicated State Tax Refunding Rev. (McCormick Place Expansion Project), Capital Appreciation, "B-1", AGM, 0%, 6/15/2026 | &nbsp;&nbsp;2385000 | &nbsp;&nbsp;&nbsp;&nbsp; **2289368** |
| Chicago, IL, Metropolitan Pier & Exposition Authority, Dedicated State Tax Rev. (McCormick Place Expansion Project), "B", NPFG, 5.5%, 6/15/2029 | &nbsp;&nbsp;2610000 | &nbsp;&nbsp;&nbsp;&nbsp; **2726119** |
| Chicago, IL, Metropolitan Pier & Exposition Authority, Dedicated State Tax Rev., Capital Appreciation, "A", NPFG, 0%, 12/15/2026 | &nbsp;&nbsp;1275000 | &nbsp;&nbsp;&nbsp;&nbsp; **1196137** |
| Chicago, IL, Midway Airport Rev., Second Lien, "A", BAM, 5%, 1/01/2031 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10582274** |
| Chicago, IL, Midway Airport Rev., Second Lien, "A", BAM, 5%, 1/01/2032 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1064427** |
| Chicago, IL, Midway Airport Rev., Second Lien, "A", BAM, 5%, 1/01/2033 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1067976** |
| Chicago, IL, Multi-Family Housing Rev. (United Yards 1A Project), 3.5%, 8/01/2027 (Put Date 8/01/2026) | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2002158** |
| Chicago, IL, O'Hare International Airport Rev., Senior Lien, "C", 5%, 1/01/2026 | &nbsp;&nbsp;3500000 | &nbsp;&nbsp;&nbsp;&nbsp; **3534537** |
| Chicago, IL, O'Hare International Airport Rev., Special Facilities, 5%, 7/01/2033 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2040868** |
| Chicago, IL, O'Hare International Airport Rev., Senior Lien, "A", 5%, 1/01/2036 | &nbsp;&nbsp;1325000 | &nbsp;&nbsp;&nbsp;&nbsp; **1394730** |
| Chicago, IL, Transit Authority Capital Grant Receipts Refunding Rev. (Federal Transit Administration Section 5337 State Of Good Repair Formula Funds), 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **150118** |
| Cook County, IL, School District No. 111, General Obligation, AGM, 4%, 12/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp; **554121** |
| DuPage County, IL, Carol Stream Park District, "C", BAM, 4%, 11/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp; **451295** |
| Illinois Finance Authority Refunding Rev. (Silver Cross Hospital & Medical Centers), "B-2", 5%, 8/15/2044 (Put Date 8/15/2035) (w) | &nbsp;&nbsp;4375000 | &nbsp;&nbsp;&nbsp;&nbsp; **4618659** |
| Illinois Finance Authority Rev. (Advocate Health Care Network), "A-1", 4%, 11/01/2030 | &nbsp;&nbsp;1550000 | &nbsp;&nbsp;&nbsp;&nbsp; **1566115** |
| Illinois Finance Authority Rev. (Dominican University), 5%, 3/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;485000 | &nbsp;&nbsp;&nbsp; **485895** |
| Illinois Finance Authority Rev. (Dominican University), 5%, 3/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;530000 | &nbsp;&nbsp;&nbsp; **535411** |
| Illinois Finance Authority Rev. (Dominican University), 5%, 3/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;590000 | &nbsp;&nbsp;&nbsp; **596031** |
| Illinois Finance Authority Rev. (Plymouth Place, Inc.), "A", 5.5%, 5/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;805000 | &nbsp;&nbsp;&nbsp; **818014** |
| Illinois Finance Authority Rev. (Plymouth Place, Inc.), "A", 5.75%, 5/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;905000 | &nbsp;&nbsp;&nbsp; **938272** |
| Illinois Finance Authority Rev. (Plymouth Place, Inc.), "A", 5.75%, 5/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;955000 | &nbsp;&nbsp;&nbsp; **994493** |
| Illinois Finance Authority Rev. (Plymouth Place, Inc.), "A", 6%, 5/15/2033 | &nbsp;&nbsp;1015000 | &nbsp;&nbsp;&nbsp;&nbsp; **1074163** |
| Illinois Finance Authority Rev. (Plymouth Place, Inc.), "A", 6%, 5/15/2034 | &nbsp;&nbsp;1075000 | &nbsp;&nbsp;&nbsp;&nbsp; **1135481** |
| Illinois Finance Authority Rev. (Southern Illinois Healthcare Enterprises, Inc.), "C", 5%, 3/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **756640** |
| Illinois Finance Authority Rev., Taxable (Christian Horizons Obligated Group), "B", 3.25%, 5/15/2027 (a)(d) | &nbsp;&nbsp;&nbsp;&nbsp;358855 | &nbsp;&nbsp;&nbsp; **104068** |
| Illinois Finance Authority, Academic Facilities Lease Rev. (Provident Group - UIUC Properties LLC - University of Illinois at Urbana-Champaign Project), "A", 5%, 10/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;195000 | &nbsp;&nbsp;&nbsp; **204795** |
| Illinois Finance Authority, Academic Facilities Lease Rev. (Provident Group - UIUC Properties LLC - University of Illinois at Urbana-Champaign Project), "A", 5%, 10/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp; **264262** |
| Illinois Finance Authority, Academic Facilities Lease Rev. (Provident Group - UIUC Properties LLC - University of Illinois at Urbana-Champaign Project), "A", 5%, 10/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;235000 | &nbsp;&nbsp;&nbsp; **247303** |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **751118** |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp; **225336** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Illinois – continued | Illinois – continued | Illinois – continued |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2026 | $1300000 | &nbsp;&nbsp;$1316247 |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;240000 | &nbsp;&nbsp;&nbsp;&nbsp; **242671** |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2027 | 1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1278356** |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp;&nbsp; **866270** |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp;&nbsp; **618499** |
| Illinois Finance Authority, Graduate & Professional Student Loan Program Rev. (Midwestern University Foundation), "A", 3%, 7/01/2035 | &nbsp;&nbsp;&nbsp;190000 | &nbsp;&nbsp;&nbsp;&nbsp; **162542** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2026 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **507482** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2027 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **513835** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2028 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **517147** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2030 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **520243** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2031 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **518552** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2032 | &nbsp;&nbsp;&nbsp;425000 | &nbsp;&nbsp;&nbsp;&nbsp; **439412** |
| Illinois Finance Authority, Health Services Facility Lease Rev. (Provident Group - UIC Surgery Center LLC - University of Illinois Health Services Facility Project), 5%, 10/01/2033 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **515151** |
| Illinois Finance Authority, Water Facilities Refunding Rev. (American Water Capital Corp. Project), 3.875%, 5/01/2040 (Put Date 9/01/2028) | 2190000 | &nbsp;&nbsp;&nbsp;&nbsp; **2152391** |
| Illinois Housing Development Authority, Multi-Family Housing Rev. (South Shore), GNMA, 4%, 6/01/2026 (Put Date 6/01/2025) | 6175000 | &nbsp;&nbsp;&nbsp;&nbsp; **6177171** |
| Illinois Housing Development Authority, Multi-Family Rev., "C-2", FHA, 3.6%, 8/01/2032 (Put Date 8/01/2028) | 5850000 | &nbsp;&nbsp;&nbsp;&nbsp; **5854242** |
| Illinois Sports Facilities Authority Refunding Rev., BAM, 5%, 6/15/2029 | 2405000 | &nbsp;&nbsp;&nbsp;&nbsp; **2527757** |
| Illinois Sports Facilities Authority, State Tax Supported Refunding Rev., AGM, 5%, 6/15/2027 | &nbsp;&nbsp;&nbsp;965000 | &nbsp;&nbsp;&nbsp;&nbsp; **966737** |
| Illinois Toll Highway Authority Senior Rev., "B", 5%, 1/01/2040 | 9000000 | &nbsp;&nbsp;&nbsp;&nbsp; **9019358** |
| Kane County, IL, School District No. 131 Rev., "A", AGM, 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;340000 | &nbsp;&nbsp;&nbsp;&nbsp; **343012** |
| Kane County, IL, School District No. 131 Rev., "B", AGM, 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **706202** |
| Madison County, IL, Edwardsville Community Unit School District No. 007, BAM, 3.375%, 12/01/2027 | &nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp; **98757** |
| Madison County, IL, Edwardsville Community Unit School District No. 007, BAM, 5%, 12/01/2028 | &nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp;&nbsp; **453505** |
| Madison County, IL, Edwardsville Community Unit School District No. 007, BAM, 5%, 12/01/2029 | &nbsp;&nbsp;&nbsp;465000 | &nbsp;&nbsp;&nbsp;&nbsp; **468487** |
| Newport Township, IL, Fire Protection District, BAM, 4%, 1/01/2027 | &nbsp;&nbsp;&nbsp;165000 | &nbsp;&nbsp;&nbsp;&nbsp; **165905** |
| Newport Township, IL, Fire Protection District, BAM, 4%, 1/01/2028 | &nbsp;&nbsp;&nbsp;170000 | &nbsp;&nbsp;&nbsp;&nbsp; **171116** |
| Northern Illinois University, Auxiliary Facilities System Refunding Rev., "B", BAM, 5%, 4/01/2026 | &nbsp;&nbsp;&nbsp;690000 | &nbsp;&nbsp;&nbsp;&nbsp; **698147** |
| Northern Illinois University, Auxiliary Facilities System Refunding Rev., "B", BAM, 5%, 4/01/2027 | &nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp;&nbsp; **538025** |
| Northern Illinois University, Auxiliary Facilities System Refunding Rev., "B", BAM, 5%, 4/01/2028 | &nbsp;&nbsp;&nbsp;640000 | &nbsp;&nbsp;&nbsp;&nbsp; **661636** |
| Northern Illinois University, Auxiliary Facilities System Refunding Rev., "B", BAM, 5%, 4/01/2030 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1049383** |
| Northern Illinois University, Auxiliary Facilities System Refunding Rev., "B", BAM, 5%, 4/01/2032 | 1325000 | &nbsp;&nbsp;&nbsp;&nbsp; **1380677** |
| Northern Illinois University, Auxiliary Facilities System Rev., BAM, 5%, 10/01/2025 | &nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;&nbsp;&nbsp; **326521** |
| Northern Illinois University, Auxiliary Facilities System Rev., BAM, 5%, 10/01/2026 | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **254640** |
| Peoria, IL, Public Building Commission, School District Facilities Rev., "A", AGM, 4%, 12/01/2025 | &nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **701996** |
| Southern Illinois University Housing and Auxiliary Facilities System Rev., "A", 4%, 4/01/2027 | 1700000 | &nbsp;&nbsp;&nbsp;&nbsp; **1713185** |
| Southwestern, IL, Development Authority Health Facility Rev. (Hospital Sisters Services, Inc.), "A", 5%, 2/15/2026 | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3032536** |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "A", AGM, 5%, 1/01/2026 | &nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp;&nbsp; **126275** |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "A", AGM, 5%, 1/01/2027 | &nbsp;&nbsp;&nbsp;120000 | &nbsp;&nbsp;&nbsp;&nbsp; **123328** |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "A", AGM, 5%, 1/01/2035 | &nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp;&nbsp; **274791** |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "A", AGM, 5%, 1/01/2036 | &nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp;&nbsp; **245706** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Illinois – continued | Illinois – continued | Illinois – continued |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "A", AGM, 5%, 1/01/2037 | $&nbsp;&nbsp;&nbsp;&nbsp;210000 | &nbsp;&nbsp;$227835 |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "B", AGM, 5%, 1/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp; **566935** |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "B", AGM, 5%, 1/01/2036 | &nbsp;&nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp; **283914** |
| St. Clair County, IL, Cahokia Community Unit School District No. 187, General Obligation, "B", AGM, 5%, 1/01/2037 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp; **239497** |
| State of Illinois, General Obligation, "A", 5%, 11/01/2027 | &nbsp;&nbsp;5365000 | &nbsp;&nbsp;&nbsp;&nbsp; **5549655** |
| State of Illinois, Sales Tax Rev., BAM, 5%, 6/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;240000 | &nbsp;&nbsp;&nbsp; **240254** |
| Upper Illinois River Valley Development Authority Rev. (Morris Hospital), 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;380000 | &nbsp;&nbsp;&nbsp; **381398** |
| Upper Illinois River Valley Development Authority Rev. (Morris Hospital), 5%, 12/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;915000 | &nbsp;&nbsp;&nbsp; **933198** |
| Winnebago, Ogle, Boone, Stephenson, Dekalb, McHenry & IL Counties, (Rock Valley College), "A", 4%, 1/01/2035 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **9824570** |
|  |  | &nbsp;&nbsp; **$207461361** |
| Indiana – 1.4% | Indiana – 1.4% | Indiana – 1.4% |
| Dekalb & Steuben Counties, GA, Central School Buildings Corp. Property Tax, 4%, 7/15/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;570000 | &nbsp;&nbsp;$570488 |
| Indiana Finance Authority Refunding Rev., Taxable (BHI Senior Living), "B", 3.21%, 11/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;115000 | &nbsp;&nbsp;&nbsp; **108206** |
| Indiana Finance Authority Rev., Taxable (BHI Senior Living), "B", 2.52%, 11/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;515000 | &nbsp;&nbsp;&nbsp; **496626** |
| Indiana Finance Authority, Educational Facilities Rev. (Rose-Hulman Institute of Technology Project), 4.5%, 6/01/2033 | &nbsp;&nbsp;3425000 | &nbsp;&nbsp;&nbsp;&nbsp; **3403625** |
| Indiana Finance Authority, Educational Facilities Rev. (Valparaiso University Project), 5%, 10/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;270000 | &nbsp;&nbsp;&nbsp; **273296** |
| Indiana Finance Authority, Environmental Facilities Refunding Rev. (Indianapolis Power & Light Co.), "B", 0.95%, 12/01/2038 (Put Date 4/01/2026) | &nbsp;&nbsp;1655000 | &nbsp;&nbsp;&nbsp;&nbsp; **1609908** |
| Indiana Finance Authority, Hospital Rev. (Goshen Health), "A", 5%, 11/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;740000 | &nbsp;&nbsp;&nbsp; **758263** |
| Indiana Finance Authority, Hospital Rev. (Goshen Health), "A", 5%, 11/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;775000 | &nbsp;&nbsp;&nbsp; **797991** |
| Indiana Finance Authority, Hospital Rev. (Goshen Health), "A", 5%, 11/01/2029 | &nbsp;&nbsp;1140000 | &nbsp;&nbsp;&nbsp;&nbsp; **1174603** |
| Indiana Finance Authority, Hospital Rev. (Goshen Health), "A", 5%, 11/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;985000 | &nbsp;&nbsp;&nbsp;&nbsp; **1013138** |
| Indiana Finance Authority, Hospital Rev. (Goshen Health), "A", 2.1%, 11/01/2049 (Put Date 11/01/2026) | &nbsp;&nbsp;2700000 | &nbsp;&nbsp;&nbsp;&nbsp; **2619403** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2025 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1251305** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2026 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2021242** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2027 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2036092** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2028 | &nbsp;&nbsp;1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1788508** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2029 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1538699** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2030 | &nbsp;&nbsp;1450000 | &nbsp;&nbsp;&nbsp;&nbsp; **1489007** |
| Indiana Secondary Market for Education Loans, Inc., Student Loan Program Rev., "1A", 5%, 6/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;520000 | &nbsp;&nbsp;&nbsp; **534784** |
| Indianapolis, IN, Local Public Improvement Bond Bank (Indianapolis Airport Authority Project), "I", 5%, 1/01/2028 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1000136** |
| Indianapolis, IN, Local Public Improvement Bond Bank, Convention Center Hotel Rev, "E", 5%, 3/01/2033 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1040530** |
| Jefferson County, IN, Jail Building Corp., Lease Rental Rev., BAM, 4%, 7/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;360000 | &nbsp;&nbsp;&nbsp; **360212** |
| Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2025 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1503908** |
| Lake County, IN, Hammond Multi-School Building Corp., 5%, 7/15/2026 | &nbsp;&nbsp;1210000 | &nbsp;&nbsp;&nbsp;&nbsp; **1234784** |
| Lake County, IN, Hammond Multi-School Building Corp., 5%, 1/15/2027 | &nbsp;&nbsp;1515000 | &nbsp;&nbsp;&nbsp;&nbsp; **1558460** |
| Valparaiso, IN, Exempt Facilities Rev. (Pratt Paper LLC Project), 4.5%, 1/01/2034 | &nbsp;&nbsp;2450000 | &nbsp;&nbsp;&nbsp;&nbsp; **2454244** |
| Whiting, IN, Environmental Facilities Rev. (BP Products North America, Inc. Project), 4.4%, 11/01/2045 (Put Date 6/10/2031) | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5008918** |
|  |  | &nbsp;&nbsp; **$37646376** |
| Iowa – 0.6% | Iowa – 0.6% | Iowa – 0.6% |
| Iowa Student Loan Liquidity Corp. Rev., "A", 5%, 12/01/2025 | $&nbsp;&nbsp;1425000 | &nbsp;&nbsp;$1436509 |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;580000 | &nbsp;&nbsp;&nbsp; **595549** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;565000 | &nbsp;&nbsp;&nbsp; **585265** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **518320** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2030 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2072238** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;615000 | &nbsp;&nbsp;&nbsp; **637213** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2031 | &nbsp;&nbsp;2100000 | &nbsp;&nbsp;&nbsp;&nbsp; **2182296** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;675000 | &nbsp;&nbsp;&nbsp; **701452** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2032 | &nbsp;&nbsp;3750000 | &nbsp;&nbsp;&nbsp;&nbsp; **3928713** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;635000 | &nbsp;&nbsp;&nbsp; **665262** |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;975000 | &nbsp;&nbsp;&nbsp;&nbsp; **1018489** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Iowa – continued | Iowa – continued | Iowa – continued |
| Iowa Student Loan Liquidity Corp. Rev., "B", 5%, 12/01/2034 | $&nbsp;&nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;$337287 |
|  |  | &nbsp;&nbsp; **$14678593** |
| Kansas – 0.8% | Kansas – 0.8% | Kansas – 0.8% |
| Manhattan, KS, Health Care Facilities Rev. (Meadowlark Hills), "A", 4%, 6/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;85000 | &nbsp;&nbsp;$84926 |
| Manhattan, KS, Health Care Facilities Rev. (Meadowlark Hills), "A", 4%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;320000 | &nbsp;&nbsp;&nbsp;&nbsp; **318283** |
| Manhattan, KS, Health Care Facilities Rev. (Meadowlark Hills), "A", 4%, 6/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;330000 | &nbsp;&nbsp;&nbsp;&nbsp; **326281** |
| Manhattan, KS, Health Care Facilities Rev. (Meadowlark Hills), "A", 4%, 6/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp;&nbsp; **293991** |
| Overland Park, KS, Development Corp. Improvement and Refunding Rev. (Overland Park Convention Center Hotel), 5%, 3/01/2026 | &nbsp;&nbsp;1770000 | &nbsp;&nbsp;&nbsp;&nbsp; **1782800** |
| Overland Park, KS, Development Corp. Improvement and Refunding Rev. (Overland Park Convention Center Hotel), 5%, 3/01/2027 | &nbsp;&nbsp;1865000 | &nbsp;&nbsp;&nbsp;&nbsp; **1896096** |
| Overland Park, KS, Development Corp. Improvement and Refunding Rev. (Overland Park Convention Center Hotel), 5%, 3/01/2028 | &nbsp;&nbsp;1960000 | &nbsp;&nbsp;&nbsp;&nbsp; **2008651** |
| Overland Park, KS, Development Corp. Improvement and Refunding Rev. (Overland Park Convention Center Hotel), 5%, 3/01/2029 | &nbsp;&nbsp;2060000 | &nbsp;&nbsp;&nbsp;&nbsp; **2125478** |
| Overland Park, KS, Development Corp. Improvement and Refunding Rev. (Overland Park Convention Center Hotel), 5%, 3/01/2030 | &nbsp;&nbsp;2165000 | &nbsp;&nbsp;&nbsp;&nbsp; **2231300** |
| Overland Park, KS, Development Corp. Improvement and Refunding Rev. (Overland Park Convention Center Hotel), 5%, 3/01/2031 | &nbsp;&nbsp;2270000 | &nbsp;&nbsp;&nbsp;&nbsp; **2337160** |
| Shawnee County, KS, Multi-Family (Union at Tower District), "A", 3.75%, 5/01/2059 (Put Date 5/01/2028) | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5007778** |
| Topeka, KS, Health Care Facilities Rev. (Brewster Place), "A", 5.75%, 12/01/2033 | &nbsp;&nbsp;1910000 | &nbsp;&nbsp;&nbsp;&nbsp; **1950020** |
|  |  | &nbsp;&nbsp; **$20362764** |
| Kentucky – 2.4% | Kentucky – 2.4% | Kentucky – 2.4% |
| Boone County, KY, Pollution Control Rev. (Duke Energy Kentucky, Inc. Project), "A", 3.7%, 8/01/2027 | $&nbsp;&nbsp;4500000 | &nbsp;&nbsp;$4492348 |
| Carroll County, KY, Environmental Facilities Rev. (Utilities Company Project), "A", 3.375%, 2/01/2026 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **9912949** |
| Hazard, KY, Healthcare Rev. (Appalachian Regional Healthcare Project), 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;270000 | &nbsp;&nbsp;&nbsp;&nbsp; **270448** |
| Hazard, KY, Healthcare Rev. (Appalachian Regional Healthcare Project), 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp;&nbsp; **228584** |
| Henderson, KY, Exempt Facilities Rev. (Pratt Paper LLC Project), "B", 3.7%, 1/01/2032 (n) | &nbsp;&nbsp;2295000 | &nbsp;&nbsp;&nbsp;&nbsp; **2215173** |
| Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), "A", 5%, 6/01/2025 | &nbsp;&nbsp;1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1749666** |
| Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), "A", 5%, 6/01/2026 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2015891** |
| Kentucky Economic Development Finance Authority Hospital Rev. (Owensboro Health, Inc.), "A", 5%, 6/01/2027 | &nbsp;&nbsp;2625000 | &nbsp;&nbsp;&nbsp;&nbsp; **2676793** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2025 | &nbsp;&nbsp;1350000 | &nbsp;&nbsp;&nbsp;&nbsp; **1350940** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp;&nbsp; **750522** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2026 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2023150** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;950000 | &nbsp;&nbsp;&nbsp;&nbsp; **960996** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2027 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3052337** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2027 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1017446** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2028 | &nbsp;&nbsp;1150000 | &nbsp;&nbsp;&nbsp;&nbsp; **1177309** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **719115** |
| Kentucky Higher Education Student Loan Corp. Rev., "A-1", 5%, 6/01/2029 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1284134** |
| Kentucky Housing Corp., Single Family Mortgage Rev., "A", GNMA, 6.25%, 7/01/2054 | &nbsp;&nbsp;9840000 | &nbsp;&nbsp;&nbsp;&nbsp; **10787877** |
| Kentucky State University, Certificates of Participation, BAM, 5%, 11/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;160000 | &nbsp;&nbsp;&nbsp;&nbsp; **161178** |
| Louisville & Jefferson County, KY, Metro Government College Improvement Rev. (Bellarmine University Project), "A", 4%, 5/01/2026 | &nbsp;&nbsp;1190000 | &nbsp;&nbsp;&nbsp;&nbsp; **1169934** |
| Louisville & Jefferson County, KY, Metro Government College Improvement Rev. (Bellarmine University Project), "A", 4%, 5/01/2027 | &nbsp;&nbsp;1105000 | &nbsp;&nbsp;&nbsp;&nbsp; **1070188** |
| Owen County, KY, Water Facilities Refunding Rev. (Kentucky-American Water Co. Project), 3.875%, 6/01/2040 (Put Date 9/01/2028) | &nbsp;&nbsp;2385000 | &nbsp;&nbsp;&nbsp;&nbsp; **2351372** |
| Public Energy Authority of Kentucky, Gas Supply Rev., "C-1", 4%, 12/01/2049 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5001758** |
| Trimble County, KY, Environmental Facilities Rev. (Kentucky Utilities Co. Project), "A", 4.7%, 6/01/2054 (Put Date 6/01/2027) | &nbsp;&nbsp;&nbsp;&nbsp;945000 | &nbsp;&nbsp;&nbsp;&nbsp; **951103** |
| Trimble County, KY, Environmental Facilities Rev. (Louisville Gas & Electric Co. Project), "A", 4.7%, 6/01/2054 (Put Date 6/01/2027) | &nbsp;&nbsp;6075000 | &nbsp;&nbsp;&nbsp;&nbsp; **6114235** |
|  |  | &nbsp;&nbsp; **$63505446** |
| Louisiana – 0.4% | Louisiana – 0.4% | Louisiana – 0.4% |
| Capital Area Finance Authority, LA, Single Family Mortgage Rev., GNMA, 6.5%, 4/01/2054 | $&nbsp;&nbsp;4410000 | &nbsp;&nbsp;$4872160 |
| Louisiana Housing Corp., Multi-Family Housing Rev. (Benoit Townhomes Project), HUD Section 8, 3.75%, 8/01/2027 (Put Date 8/01/2026) | &nbsp;&nbsp;2600000 | &nbsp;&nbsp;&nbsp;&nbsp; **2610687** |
| Louisiana Local Government, Environmental Facilities & Community Development Authority Rev., Taxable (LCTCS Act 360 Project), AGM, 0.965%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp;&nbsp; **740062** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Louisiana – continued | Louisiana – continued | Louisiana – continued |
| Louisiana Local Government, Environmental Facilities & Community Development Authority Rev., Taxable (LCTCS Act 360 Project), AGM, 1.165%, 10/01/2026 | $&nbsp;&nbsp;&nbsp;330000 | &nbsp;&nbsp;$316655 |
| Louisiana Local Government, Environmental Facilities & Community Development Authority Rev., Taxable (LCTCS Act 360 Project), AGM, 1.406%, 10/01/2027 | &nbsp;&nbsp;&nbsp;460000 | &nbsp;&nbsp;&nbsp; **431771** |
| Louisiana Local Government, Environmental Facilities & Community Development Authority Rev., Taxable (LCTCS Act 360 Project), AGM, 1.656%, 10/01/2028 | 1285000 | &nbsp;&nbsp;&nbsp;&nbsp; **1183102** |
| Louisiana Public Facilities Authority Refunding Rev. (Loyola University Project), 5%, 10/01/2025 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **301205** |
| Shreveport, LA, Water & Sewer Rev., "B", AGM, 5%, 12/01/2027 | &nbsp;&nbsp;&nbsp;670000 | &nbsp;&nbsp;&nbsp; **695850** |
|  |  | &nbsp;&nbsp; **$11151492** |
| Maine – 0.1% | Maine – 0.1% | Maine – 0.1% |
| Maine Finance Authority, Student Loan Rev., "A-1", AGM, 5%, 12/01/2025 | $&nbsp;&nbsp;&nbsp;330000 | &nbsp;&nbsp;$331791 |
| Maine Finance Authority, Student Loan Rev., "A-1", AGM, 5%, 12/01/2026 | &nbsp;&nbsp;&nbsp;360000 | &nbsp;&nbsp;&nbsp; **364574** |
| Maine Finance Authority, Student Loan Rev., "A-1", AGM, 5.25%, 12/01/2028 | &nbsp;&nbsp;&nbsp;710000 | &nbsp;&nbsp;&nbsp; **737254** |
| Maine Finance Authority, Student Loan Rev., "A-1", AGM, 5.25%, 12/01/2029 | &nbsp;&nbsp;&nbsp;975000 | &nbsp;&nbsp;&nbsp;&nbsp; **1020396** |
| Maine Finance Authority, Student Loan Rev., "A-1", AGM, 5.25%, 12/01/2030 | &nbsp;&nbsp;&nbsp;950000 | &nbsp;&nbsp;&nbsp; **998891** |
|  |  | &nbsp;&nbsp; **$3452906** |
| Maryland – 0.5% | Maryland – 0.5% | Maryland – 0.5% |
| Baltimore, MD, Convention Center Hotel Rev., 5%, 9/01/2030 | $1000000 | &nbsp;&nbsp;$1008288 |
| Howard County, MD, Special Obligation (Downtown Columbia Project), "A", 4%, 2/15/2028 (n) | &nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **347831** |
| Maryland Community Development Administration, Department of Housing & Community Development Housing Rev., "D", 4%, 9/01/2036 | &nbsp;&nbsp;&nbsp;160000 | &nbsp;&nbsp;&nbsp; **159651** |
| Maryland Economic Development Corp., Student Housing Rev. (University of Maryland College Park), AGM, 4%, 6/01/2025 | 1600000 | &nbsp;&nbsp;&nbsp;&nbsp; **1600220** |
| Maryland Economic Development Corp., Student Housing Rev. (University of Maryland College Park), AGM, 4%, 6/01/2026 | &nbsp;&nbsp;&nbsp;650000 | &nbsp;&nbsp;&nbsp; **654869** |
| Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), 5%, 1/01/2026 | &nbsp;&nbsp;&nbsp;495000 | &nbsp;&nbsp;&nbsp; **497540** |
| Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), 5%, 1/01/2027 | &nbsp;&nbsp;&nbsp;430000 | &nbsp;&nbsp;&nbsp; **438626** |
| Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), 5%, 1/01/2028 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **308916** |
| Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), 5%, 1/01/2029 | &nbsp;&nbsp;&nbsp;290000 | &nbsp;&nbsp;&nbsp; **300840** |
| Maryland Health & Higher Educational Facilities Authority Rev. (Adventist Healthcare), 5%, 1/01/2030 | &nbsp;&nbsp;&nbsp;285000 | &nbsp;&nbsp;&nbsp; **297222** |
| Maryland Health & Higher Educational Facilities Authority Rev. (University of Maryland Medical System), "B", 5%, 7/01/2045 (Put Date 7/01/2031) | 2665000 | &nbsp;&nbsp;&nbsp;&nbsp; **2884304** |
| Montgomery County, MD, Housing Opportunities Commission Multi-Family Rev., "A", FHA, 3.85%, 7/01/2034 | 4000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3949510** |
|  |  | &nbsp;&nbsp; **$12447817** |
| Massachusetts – 1.7% | Massachusetts – 1.7% | Massachusetts – 1.7% |
| Massachusetts Development Finance Agency Refunding Rev. (Suffolk University), 5%, 7/01/2026 | $&nbsp;&nbsp;&nbsp;475000 | &nbsp;&nbsp;$479098 |
| Massachusetts Development Finance Agency Refunding Rev. (Suffolk University), 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp; **608400** |
| Massachusetts Development Finance Agency Refunding Rev. (Suffolk University), 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;520000 | &nbsp;&nbsp;&nbsp; **529736** |
| Massachusetts Development Finance Agency Rev. (Brown University), "B", 5%, 8/15/2055 (Put Date 8/15/2031) (w) | 2230000 | &nbsp;&nbsp;&nbsp;&nbsp; **2365740** |
| Massachusetts Development Finance Agency Rev. (Caregroup, Inc.), "I", 5%, 7/01/2027 | 2435000 | &nbsp;&nbsp;&nbsp;&nbsp; **2474305** |
| Massachusetts Development Finance Agency Rev. (Lasell University), 4%, 7/01/2025 | &nbsp;&nbsp;&nbsp;230000 | &nbsp;&nbsp;&nbsp; **229459** |
| Massachusetts Development Finance Agency Rev. (Lasell University), 4%, 7/01/2026 | &nbsp;&nbsp;&nbsp;145000 | &nbsp;&nbsp;&nbsp; **143466** |
| Massachusetts Development Finance Agency Rev. (Lasell University), 4%, 7/01/2027 | &nbsp;&nbsp;&nbsp;255000 | &nbsp;&nbsp;&nbsp; **250044** |
| Massachusetts Development Finance Agency Rev. (Lasell University), 4%, 7/01/2028 | &nbsp;&nbsp;&nbsp;330000 | &nbsp;&nbsp;&nbsp; **320450** |
| Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2025 | 1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1500621** |
| Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2026 | 1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1765098** |
| Massachusetts Development Finance Agency Rev. (Suffolk University), 5%, 7/01/2027 | 2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2028000** |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "A", 5%, 7/01/2025 | 1150000 | &nbsp;&nbsp;&nbsp;&nbsp; **1151444** |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "A", 5%, 7/01/2026 | 1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1507506** |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "A", 5%, 7/01/2027 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1015027** |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "A", 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;780000 | &nbsp;&nbsp;&nbsp; **794142** |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "A", 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp; **865247** |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "C", AGM, 5%, 10/01/2025 | &nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **351928** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Massachusetts – continued | Massachusetts – continued | Massachusetts – continued |
| Massachusetts Development Finance Agency Rev. (Wellforce, Inc.), "C", AGM, 5%, 10/01/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;$357957 |
| Massachusetts Development Finance Agency Rev. (Williams College), "N", 0.45%, 7/01/2041 (Put Date 7/01/2025) | &nbsp;&nbsp;3455000 | &nbsp;&nbsp;&nbsp;&nbsp; **3426743** |
| Massachusetts Educational Financing Authority, Education Loan Rev., "B", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp;&nbsp; **851776** |
| Massachusetts Educational Financing Authority, Education Loan Rev., "B", 5%, 7/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1015966** |
| Massachusetts Educational Financing Authority, Education Loan Rev., "B", 5%, 7/01/2027 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1534580** |
| Massachusetts Educational Financing Authority, Education Loan Rev., "B", 3.625%, 7/01/2038 | &nbsp;&nbsp;2995000 | &nbsp;&nbsp;&nbsp;&nbsp; **2843573** |
| Massachusetts Educational Financing Authority, Education Loan Rev., "B", 4.25%, 7/01/2044 | &nbsp;&nbsp;4000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3872557** |
| Massachusetts Educational Financing Authority, Education Loan Rev., "C", 2.625%, 7/01/2036 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45000 | &nbsp;&nbsp;&nbsp; **44847** |
| Massachusetts Educational Financing Authority, Education Loan Rev., Issue N, "B", 5%, 7/01/2028 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2062265** |
| Massachusetts Educational Financing Authority, Education Loan Rev., Issue N, "B", 5%, 7/01/2029 | &nbsp;&nbsp;4500000 | &nbsp;&nbsp;&nbsp;&nbsp; **4660980** |
| Massachusetts Housing Finance Agency Rev., "D-3", FHA, 3.3%, 12/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **995694** |
| Massachusetts Housing Finance Agency Rev., "A-3", 3.05%, 12/01/2027 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1966780** |
| Massachusetts Port Authority Rev., "A", 5%, 7/01/2035 | &nbsp;&nbsp;3340000 | &nbsp;&nbsp;&nbsp;&nbsp; **3461705** |
|  |  | &nbsp;&nbsp; **$45475134** |
| Michigan – 2.9% | Michigan – 2.9% | Michigan – 2.9% |
| Flint, MI, Public Library Building & Site Rev., AGM, 3%, 5/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;675000 | &nbsp;&nbsp;$675000 |
| Lincoln, MI, Consolidated School District, General Obligation Unlimited Tax Refuding, Taxable, 0.83%, 5/01/2025 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1000000** |
| Michigan Finance Authority Local Government Loan Program Rev. (Detroit Water and Sewerage Department Sewage Disposal System Rev. Refunding Second Lien Local Project), "C", 5%, 7/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1002495** |
| Michigan Finance Authority Tobacco Settlement Asset-Backed Rev. (2007 Sold Tobacco Receipts), "A", 5%, 6/01/2030 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2096678** |
| Michigan Finance Authority Tobacco Settlement Asset-Backed Rev., Taxable (2006 Sold Tobacco Receipts), "A-1", 2.326%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;114105 | &nbsp;&nbsp;&nbsp;&nbsp; **113016** |
| Michigan Finance Authority, Hospital Refunding Rev. (Corewell Health), "B-2", 5%, 8/15/2055 (Put Date 6/01/2035) (w) | &nbsp;&nbsp;7555000 | &nbsp;&nbsp;&nbsp;&nbsp; **8123536** |
| Michigan Finance Authority, Hospital Rev. (McLaren Health Care), "D-1", 1.2%, 10/15/2030 (Put Date 4/13/2028) | &nbsp;&nbsp;1470000 | &nbsp;&nbsp;&nbsp;&nbsp; **1363725** |
| Michigan Finance Authority, Hospital Rev. (McLaren Health Care), "D-2", 1.2%, 10/15/2038 (Put Date 4/13/2028) | &nbsp;&nbsp;1850000 | &nbsp;&nbsp;&nbsp;&nbsp; **1711368** |
| Michigan Housing Development Authority, Multi-Family Housing Rev. (Clark Road Senior Apartments Project), 4.5%, 12/01/2042 (Put Date 4/01/2026) | &nbsp;&nbsp;7735000 | &nbsp;&nbsp;&nbsp;&nbsp; **7807957** |
| Michigan Housing Development Authority, Rental Housing Rev., "A", 3.7%, 4/01/2030 | &nbsp;&nbsp;9200000 | &nbsp;&nbsp;&nbsp;&nbsp; **8983888** |
| Michigan Housing Development Authority, Single Family Mortgage Rev., "D", 5.5%, 6/01/2053 | &nbsp;&nbsp;2865000 | &nbsp;&nbsp;&nbsp;&nbsp; **2997595** |
| Michigan Strategic Fund (Waste Management, Inc.), 4.125%, 8/01/2027 | &nbsp;&nbsp;4300000 | &nbsp;&nbsp;&nbsp;&nbsp; **4257267** |
| Michigan Strategic Fund Limited Obligation Rev. (DTE Electric Co. Exempt Facilities Project), "DT", 3.875%, 6/01/2053 (Put Date 6/03/2030) | 10750000 | &nbsp;&nbsp;&nbsp;&nbsp; **10674138** |
| Michigan Strategic Fund Limited Obligation Rev. (I-75 Improvement Project), AGM, 4.125%, 6/30/2035 | &nbsp;&nbsp;2515000 | &nbsp;&nbsp;&nbsp;&nbsp; **2443018** |
| Michigan Strategic Fund Ltd. Obligation Rev. (Consumers Energy Company Project), 0.875%, 4/01/2035 (Put Date 10/08/2026) | &nbsp;&nbsp;6680000 | &nbsp;&nbsp;&nbsp;&nbsp; **6229952** |
| Michigan Strategic Fund Ltd. Obligation Rev. (I-75 Improvement Project), 5%, 12/31/2027 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2048108** |
| Michigan Strategic Fund Ltd. Obligation Rev. (I-75 Improvement Project), 5%, 6/30/2028 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3082739** |
| Michigan Strategic Fund Ltd. Obligation Rev. (I-75 Improvement Project), 5%, 12/31/2028 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3093275** |
| Saginaw, MI, Hospital Finance Authority Rev. (Covenant Medical Center, Inc.), "J", 5%, 7/01/2027 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1026870** |
| Saginaw, MI, Hospital Finance Authority Rev. (Covenant Medical Center, Inc.), "J", 5%, 7/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **526134** |
| Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), "D", 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp;&nbsp; **352979** |
| Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), "D", 5%, 12/01/2026 | &nbsp;&nbsp;1745000 | &nbsp;&nbsp;&nbsp;&nbsp; **1785109** |
| Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), "D", 5%, 12/01/2027 | &nbsp;&nbsp;2775000 | &nbsp;&nbsp;&nbsp;&nbsp; **2866093** |
| Wayne County, MI, Airport Authority Rev. (Detroit Metropolitan Wayne County Airport), "D", 5%, 12/01/2028 | &nbsp;&nbsp;2595000 | &nbsp;&nbsp;&nbsp;&nbsp; **2699687** |
|  |  | &nbsp;&nbsp; **$76960627** |
| Minnesota – 0.4% | Minnesota – 0.4% | Minnesota – 0.4% |
| Duluth, MN, Economic Development Authority Rev. (Benedictine Health System), "A", 3%, 7/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;$398212 |
| Duluth, MN, Economic Development Authority Rev. (Benedictine Health System), "A", 3%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;235000 | &nbsp;&nbsp;&nbsp;&nbsp; **229507** |
| Minnesota Housing Finance Agency, Residential Housing, "O", GNMA, 6%, 7/01/2053 | &nbsp;&nbsp;4735000 | &nbsp;&nbsp;&nbsp;&nbsp; **5048588** |
| Minnesota Office of Higher Education Supplemental Student Loan Program Rev., 5%, 11/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp;&nbsp; **853790** |
| Minnesota Office of Higher Education Supplemental Student Loan Program Rev., 5%, 11/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **710407** |
| Minnesota Office of Higher Education Supplemental Student Loan Program Rev., 5%, 11/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **717407** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Minnesota – continued | Minnesota – continued | Minnesota – continued |
| Minnesota Rural Water Finance Authority Rev. (Public Projects), 3.3%, 8/01/2026 | $&nbsp;&nbsp;3450000 | &nbsp;&nbsp;$3446624 |
|  |  | &nbsp;&nbsp; **$11404535** |
| Mississippi – 0.7% | Mississippi – 0.7% | Mississippi – 0.7% |
| Gulfport, MS, Hospital Facilities Rev. (Memorial Hospital at Gulfport Project), 5%, 7/01/2025 | $&nbsp;&nbsp;3680000 | &nbsp;&nbsp;$3682761 |
| Gulfport, MS, Hospital Facilities Rev. (Memorial Hospital at Gulfport Project), 5%, 7/01/2027 | &nbsp;&nbsp;1960000 | &nbsp;&nbsp;&nbsp;&nbsp; **1973024** |
| Gulfport, MS, Hospital Facilities Rev. (Memorial Hospital at Gulfport Project), 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;380000 | &nbsp;&nbsp;&nbsp; **382245** |
| Gulfport, MS, Hospital Facilities Rev. (Memorial Hospital at Gulfport Project), 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;355000 | &nbsp;&nbsp;&nbsp; **356839** |
| Gulfport, MS, Hospital Facilities Rev. (Memorial Hospital at Gulfport Project), 5%, 7/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;380000 | &nbsp;&nbsp;&nbsp; **381286** |
| Jackson, MS, General Obligation Refunding, 5%, 3/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;825000 | &nbsp;&nbsp;&nbsp; **828801** |
| Mississippi Development Bank Special Obligation (Jackson Sales Tax Rev. Infrastructure Project), 5%, 9/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;280000 | &nbsp;&nbsp;&nbsp; **279757** |
| Mississippi Hospital Equipment & Facilities Authority Rev. (North Mississippi Health Services), "I", 5%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;530000 | &nbsp;&nbsp;&nbsp; **532546** |
| Mississippi Hospital Equipment & Facilities Authority Rev. (North Mississippi Health Services), "I", 5%, 10/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;800000 | &nbsp;&nbsp;&nbsp; **825461** |
| Mississippi Hospital Equipment & Facilities Authority Rev. (North Mississippi Health Services), "I", 5%, 10/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;975000 | &nbsp;&nbsp;&nbsp;&nbsp; **1017241** |
| Mississippi Hospital Equipment & Facilities Authority Rev. (North Mississippi Health Services), "I", 5%, 10/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp; **421418** |
| Warren County, MS, Gulf Opportunity Zone Rev. (International Paper Co. Project), "A", 1.375%, 5/01/2034 (Put Date 6/16/2025) | &nbsp;&nbsp;3500000 | &nbsp;&nbsp;&nbsp;&nbsp; **3486327** |
| Warren County, MS, Gulf Opportunity Zone Rev. (International Paper Co. Project), "C", 1.375%, 8/01/2027 (Put Date 6/16/2025) | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2988252** |
| West Rankin, MS, Utility Authority Rev., Taxable, AGM, 1.001%, 1/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;465000 | &nbsp;&nbsp;&nbsp; **454729** |
| West Rankin, MS, Utility Authority Rev., Taxable, AGM, 1.399%, 1/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **463394** |
|  |  | &nbsp;&nbsp; **$18074081** |
| Missouri – 1.1% | Missouri – 1.1% | Missouri – 1.1% |
| Missouri Development Finance Board, Infrastructure Facilities Rev. (Crackerneck Creek Project), 5%, 3/01/2026 | $&nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;$150728 |
| Missouri Development Finance Board, Infrastructure Facilities Rev. (Crackerneck Creek Project), 4%, 3/01/2036 | &nbsp;&nbsp;1140000 | &nbsp;&nbsp;&nbsp;&nbsp; **1063561** |
| Missouri Development Finance Board, Infrastructure Facilities Rev. (Crackerneck Creek Project), 4%, 3/01/2037 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **459017** |
| Missouri Health & Educational Facilities Authority Rev. (Bethesda Health Group, Inc.), 4%, 8/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;205000 | &nbsp;&nbsp;&nbsp; **203413** |
| Missouri Health & Educational Facilities Authority Rev. (Bethesda Health Group, Inc.), 4%, 8/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;420000 | &nbsp;&nbsp;&nbsp; **412202** |
| Missouri Health & Educational Facilities Authority Rev. (Bethesda Health Group, Inc.), 4%, 8/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **290821** |
| Missouri Housing Development Commission, Single Family Mortgage Rev. (First Place Homeownership Loan Program), "A", GNMA, 6%, 5/01/2056 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10845233** |
| Missouri Housing Development Commission, Single Family Mortgage Rev. (First Place Homeownership Loan Program), "E", GNMA, 6.5%, 5/01/2054 | &nbsp;&nbsp;3235000 | &nbsp;&nbsp;&nbsp;&nbsp; **3578286** |
| Missouri Joint Municipal Electric Utility Commission Power Project Rev. (Iatan 2 Project), "A", 5%, 12/01/2035 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5006276** |
| Plaza at Noah's Ark Community District, MO, Tax Increment and Improvement Rev., 3%, 5/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **147833** |
| Poplar Bluff, MO, Transportation Development District Convertible Transportation Refunding & Improvement Rev., "B", 3.375%, 12/01/2031 | &nbsp;&nbsp;1640000 | &nbsp;&nbsp;&nbsp;&nbsp; **1545831** |
| Springfield, MO, Public Utility Refunding Rev., 4%, 8/01/2036 | &nbsp;&nbsp;5250000 | &nbsp;&nbsp;&nbsp;&nbsp; **5071647** |
| St. Louis, MO, Land Clearance for Redevelopment Authority, Special Obligation Refunding (600 Washington Project), "A", 4%, 4/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **301294** |
| St. Louis, MO, Land Clearance for Redevelopment Authority, Special Obligation Refunding (600 Washington Project), "A", 4%, 4/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **352973** |
|  |  | &nbsp;&nbsp; **$29429115** |
| Montana – 0.2% | Montana – 0.2% | Montana – 0.2% |
| Forsyth, MT, Pollution Control Rev. (Avista Corp. Colstrip Project), "A", 3.875%, 10/01/2032 | $&nbsp;&nbsp;6220000 | &nbsp;&nbsp;$6078836 |
| Nebraska – 0.5% | Nebraska – 0.5% | Nebraska – 0.5% |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2027 | $&nbsp;&nbsp;2500000 | &nbsp;&nbsp;$2586957 |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2028 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2088277** |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2029 | &nbsp;&nbsp;1200000 | &nbsp;&nbsp;&nbsp;&nbsp; **1264458** |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2030 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2119917** |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2031 | &nbsp;&nbsp;1400000 | &nbsp;&nbsp;&nbsp;&nbsp; **1494946** |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2032 | &nbsp;&nbsp;1125000 | &nbsp;&nbsp;&nbsp;&nbsp; **1202879** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Nebraska – continued | Nebraska – continued | Nebraska – continued |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2033 | $&nbsp;&nbsp;1500000 | &nbsp;&nbsp;$1604773 |
| Omaha, NE, Airport Authority, Airport Facilities Rev., AGM, 5%, 12/15/2034 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1605025** |
|  |  | &nbsp;&nbsp; **$13967232** |
| Nevada – 0.3% | Nevada – 0.3% | Nevada – 0.3% |
| Clark County, NV, Jet Aviation Fuel Tax Refunding Rev., "A", 5%, 7/01/2026 | $&nbsp;&nbsp;1545000 | &nbsp;&nbsp;$1571386 |
| Nevada Housing Division, Multi-Unit Housing Rev. (Carville Park Apartments), HUD Section 8, 5%, 7/01/2028 (Put Date 7/01/2027) | &nbsp;&nbsp;2235000 | &nbsp;&nbsp;&nbsp;&nbsp; **2308088** |
| Washoe County, NV, Gas and Water Facilities Rev. (Sierra Pacific Power Company Projects), "C", 3.625%, 3/01/2036 (Put Date 10/01/2029) | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp; **995683** |
| Washoe County, NV, Water Facilities Rev. (Sierra Pacific Power Company Projects), "C", 4.125%, 3/01/2036 (Put Date 10/01/2029) | &nbsp;&nbsp;&nbsp;&nbsp;860000 | &nbsp;&nbsp;&nbsp; **863204** |
| Washoe County, NV, Water Facilities Rev. (Sierra Pacific Power Company Projects), "F", 4.125%, 3/01/2036 (Put Date 10/01/2029) | &nbsp;&nbsp;1275000 | &nbsp;&nbsp;&nbsp;&nbsp; **1279751** |
|  |  | &nbsp;&nbsp; **$7018112** |
| New Hampshire – 1.7% | New Hampshire – 1.7% | New Hampshire – 1.7% |
| National Finance Authority Pollution Control Refunding Rev. (New York State Electric & Gas Corp. Project), "A", 4%, 12/01/2028 | $&nbsp;&nbsp;5775000 | &nbsp;&nbsp;$5744110 |
| National Finance Authority, New Hampshire Senior Living Rev. (Springpoint Senior Living Project), 4%, 1/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp; **263920** |
| National Finance Authority, New Hampshire Senior Living Rev. (Springpoint Senior Living Project), 4%, 1/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;580000 | &nbsp;&nbsp;&nbsp; **572682** |
| National Finance Authority, New Hampshire Senior Living Rev. (Springpoint Senior Living Project), 4%, 1/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **294394** |
| National Finance Authority, New Hampshire Senior Living Rev. (Springpoint Senior Living Project), 4%, 1/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;280000 | &nbsp;&nbsp;&nbsp; **273212** |
| National Finance Authority, New Hampshire Senior Living Rev. (Springpoint Senior Living Project), 4%, 1/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;295000 | &nbsp;&nbsp;&nbsp; **285891** |
| National Finance Authority, NH, Lease Rent Rev. (Centurion Biosquare, Inc.), "A", 5.88%, 12/15/2038 | 15025000 | &nbsp;&nbsp;&nbsp;&nbsp; **15113984** |
| National Finance Authority, NH, Lease Rent Rev. (Centurion Foundation West Main Street LLC), "A", 5%, 5/15/2034 | &nbsp;&nbsp;8450000 | &nbsp;&nbsp;&nbsp;&nbsp; **8310811** |
| National Finance Authority, NH, Lease Rent Rev., Taxable (Centurion Biosquare, Inc.), "B", 9.58%, 12/15/2038 | &nbsp;&nbsp;&nbsp;&nbsp;905000 | &nbsp;&nbsp;&nbsp; **905986** |
| National Finance Authority, NH, Lease Rent Rev., Taxable (Centurion Foundation West Main Street, LLC), "B", 8.33%, 5/15/2034 | &nbsp;&nbsp;&nbsp;&nbsp;605000 | &nbsp;&nbsp;&nbsp; **616560** |
| National Finance Authority, NH, Rev., Taxable (Centurion Foundation), "C", 11%, 12/15/2038 | &nbsp;&nbsp;&nbsp;&nbsp;495000 | &nbsp;&nbsp;&nbsp; **495511** |
| New Hampshire Health & Education Facilities Authority Rev. (Memorial Hospital), 5.25%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;670000 | &nbsp;&nbsp;&nbsp; **677091** |
| New Hampshire Health & Education Facilities Authority, Education Loan Rev. (Granite Edvance Corp. Issue), "B", 5%, 11/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp; **569003** |
| New Hampshire Health & Education Facilities Authority, Education Loan Rev. (Granite Edvance Corp. Issue), "B", 5%, 11/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp; **576214** |
| New Hampshire Health & Education Facilities Authority, Education Loan Rev. (Granite Edvance Corp. Issue), "B", 5%, 11/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;&nbsp; **182825** |
| New Hampshire Health & Education Facilities Authority, Education Loan Rev. (Granite Edvance Corp. Issue), "B", 4%, 11/01/2044 | &nbsp;&nbsp;1765000 | &nbsp;&nbsp;&nbsp;&nbsp; **1549400** |
| New Hampshire Housing Finance Authority, Single Family Mortgage Acquisition Rev., "C", GNMA, 6.25%, 1/01/2055 | &nbsp;&nbsp;7705000 | &nbsp;&nbsp;&nbsp;&nbsp; **8289280** |
|  |  | &nbsp;&nbsp; **$44720874** |
| New Jersey – 3.3% | New Jersey – 3.3% | New Jersey – 3.3% |
| Camden County, NJ, Improvement Authority, Multi-Family Housing Rev. (Northgate I Apartments Project), 5%, 3/01/2027 (Put Date 3/01/2026) | $&nbsp;&nbsp;3625000 | &nbsp;&nbsp;$3669657 |
| Hudson County, NJ, Redevelopment Agency Rev. (Bayfront Redevelopment Project), 4.5%, 12/11/2025 | &nbsp;&nbsp;3500000 | &nbsp;&nbsp;&nbsp;&nbsp; **3515194** |
| New Jersey Building Authority, State Building Rev. Unrefunded Balance, "A", BAM, 5%, 6/15/2025 | &nbsp;&nbsp;1205000 | &nbsp;&nbsp;&nbsp;&nbsp; **1207225** |
| New Jersey Building Authority, State Building Rev., "A", ETM, BAM, 5%, 6/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;795000 | &nbsp;&nbsp;&nbsp; **796468** |
| New Jersey Economic Development Authority Refunding Rev. (Provident Group - Montclair Properties LLC - Montclair State University Student Housing Project), AGM, 5%, 6/01/2025 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1000743** |
| New Jersey Economic Development Authority Refunding Rev. (Provident Group - Montclair Properties LLC - Montclair State University Student Housing Project), AGM, 5%, 6/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1018042** |
| New Jersey Economic Development Authority Rev. (Portal North Bridge Project), "A", 5%, 11/01/2033 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1622381** |
| New Jersey Economic Development Authority Rev. (Portal North Bridge Project), "A", 5%, 11/01/2034 | &nbsp;&nbsp;1040000 | &nbsp;&nbsp;&nbsp;&nbsp; **1118288** |
| New Jersey Economic Development Authority Rev. (School Facilities Construction), "DDD", 5%, 6/15/2025 | &nbsp;&nbsp;1610000 | &nbsp;&nbsp;&nbsp;&nbsp; **1612311** |
| New Jersey Economic Development Authority Rev. (School Facilities Construction), "DDD", 5%, 6/15/2026 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2039600** |
| New Jersey Economic Development Authority Rev. (School Facilities Construction), "DDD", 5%, 6/15/2027 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1552883** |
| New Jersey Economic Development Authority Rev. (School Facilities Construction), "DDD", 5%, 6/15/2028 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3093111** |
| New Jersey Economic Development Authority Rev. (School Facilities Construction), Capital Appreciation, "DDD", AGM, 0%, 12/15/2026 | &nbsp;&nbsp;6855000 | &nbsp;&nbsp;&nbsp;&nbsp; **6486547** |
| New Jersey Economic Development Authority, Water Facilities Rev. (American Water Co., Inc. Project), "B", 3.75%, 11/01/2034 (Put Date 6/01/2028) | &nbsp;&nbsp;2350000 | &nbsp;&nbsp;&nbsp;&nbsp; **2337794** |
| New Jersey Economic Development Authority, Water Facilities Rev. (American Water Co., Inc. Project), "E", 0.85%, 12/01/2025 | &nbsp;&nbsp;1135000 | &nbsp;&nbsp;&nbsp;&nbsp; **1104789** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| New Jersey – continued | New Jersey – continued | New Jersey – continued |
| New Jersey Health Care Facilities, Financing Authority Rev. (University Hospital), "A", AGM, 5%, 7/01/2026 | $1420000 | &nbsp;&nbsp;$1422782 |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Refunding Rev., "A", 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;415000 | &nbsp;&nbsp;&nbsp; **418352** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Refunding Rev., "A", 5%, 12/01/2026 | &nbsp;&nbsp;&nbsp;335000 | &nbsp;&nbsp;&nbsp; **341575** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Refunding Rev., "A", 5%, 12/01/2031 | 1200000 | &nbsp;&nbsp;&nbsp;&nbsp; **1261063** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 4%, 12/01/2041 | 5410000 | &nbsp;&nbsp;&nbsp;&nbsp; **5253683** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2025 | 2600000 | &nbsp;&nbsp;&nbsp;&nbsp; **2616352** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp; **856865** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2026 | 2300000 | &nbsp;&nbsp;&nbsp;&nbsp; **2345142** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2026 | 1430000 | &nbsp;&nbsp;&nbsp;&nbsp; **1458067** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2027 | 1550000 | &nbsp;&nbsp;&nbsp;&nbsp; **1594628** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2028 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1037900** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2028 | 5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5196290** |
| New Jersey Higher Education Student Assistance Authority, Senior Student Loan Rev., "B", 5%, 12/01/2031 | 3800000 | &nbsp;&nbsp;&nbsp;&nbsp; **3993366** |
| New Jersey Housing & Mortgage Finance Agency, Multi-Family Conduit Rev. (New Irvine Taylor Apartments Project), "C", HUD Section 8, 3.67%, 2/01/2026 | 3165000 | &nbsp;&nbsp;&nbsp;&nbsp; **3168797** |
| New Jersey Housing & Mortgage Finance Agency, Multi-Family Rev., "B", HUD Section 8, 3.375%, 11/01/2027 | 2760000 | &nbsp;&nbsp;&nbsp;&nbsp; **2723912** |
| New Jersey Housing & Mortgage Finance Agency, Multi-Family Rev., "E-2", 3.375%, 11/01/2027 | 5500000 | &nbsp;&nbsp;&nbsp;&nbsp; **5429980** |
| New Jersey Transportation Trust Authority, "B", AAC, 5.5%, 9/01/2026 | 1985000 | &nbsp;&nbsp;&nbsp;&nbsp; **2045650** |
| New Jersey Transportation Trust Fund Authority, Transportation System, Capital Appreciation, "C", AAC, 0%, 12/15/2026 | 1815000 | &nbsp;&nbsp;&nbsp;&nbsp; **1714709** |
| New Jersey Transportation Trust Fund Authority, Transportation System, Capital Appreciation, "C", AAC, 0%, 12/15/2028 | 3485000 | &nbsp;&nbsp;&nbsp;&nbsp; **3057844** |
| New Jersey Transportation Trust Fund Authority, Transportation System, Capital Appreciation, "C", AGM, 0%, 12/15/2032 | 1890000 | &nbsp;&nbsp;&nbsp;&nbsp; **1413646** |
| New Jersey Transportation Trust Fund Authority, Transportation System, Capital Appreciation, "C", NPFG, 0%, 12/15/2027 | 2600000 | &nbsp;&nbsp;&nbsp;&nbsp; **2368797** |
| New Jersey Turnpike Authority, Turnpike Rev., Taxable, "B", 1.047%, 1/01/2026 | 2380000 | &nbsp;&nbsp;&nbsp;&nbsp; **2331417** |
| Newark, NJ, Housing Authority Rev. (South Ward Police Facility), AGM, 5%, 12/01/2025 | 1850000 | &nbsp;&nbsp;&nbsp;&nbsp; **1865333** |
| Newark, NJ, Housing Authority Rev. (South Ward Police Facility), AGM, 5%, 12/01/2026 | 1725000 | &nbsp;&nbsp;&nbsp;&nbsp; **1768700** |
|  |  | &nbsp;&nbsp; **$87859883** |
| New Mexico – 1.1% | New Mexico – 1.1% | New Mexico – 1.1% |
| Clayton, NM, Jail Project Improvement Rev., NPFG, 5%, 11/01/2029 | $1000000 | &nbsp;&nbsp;$1008406 |
| Farmington, NM, Pollution Control Rev. (Public Service Company of New Mexico San Juan Project), "D", 3.9%, 6/01/2040 (Put Date 6/01/2028) | 7000000 | &nbsp;&nbsp;&nbsp;&nbsp; **6974641** |
| Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 4%, 9/01/2025 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **150082** |
| Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 5%, 9/01/2026 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **305672** |
| Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 5%, 9/01/2028 | &nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;&nbsp; **183041** |
| Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 5%, 9/01/2030 | &nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp; **480390** |
| Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 5%, 9/01/2031 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **318272** |
| Los Ranchos de Albuquerque, NM, Education Facilities Rev. (Albuquerque Academy Project), 5%, 9/01/2032 | &nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **370097** |
| New Mexico Finance Authority, Rev. (Senior Lien Public Project), "A-2", 5%, 6/01/2032 | &nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **760192** |
| New Mexico Finance Authority, Rev. (Senior Lien Public Project), "A-2", 5%, 6/01/2033 | &nbsp;&nbsp;&nbsp;775000 | &nbsp;&nbsp;&nbsp; **784954** |
| New Mexico Hospital Equipment Loan Council, Hospital System and Improvement Rev. (San Juan Regional Medical Center), 5%, 6/01/2025 | 1055000 | &nbsp;&nbsp;&nbsp;&nbsp; **1055623** |
| New Mexico Hospital Equipment Loan Council, Hospital System and Improvement Rev. (San Juan Regional Medical Center), 5%, 6/01/2026 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1013667** |
| New Mexico Mortgage Finance Authority, Multi-Family Housing Rev. (Mountain View II & III Apartments Project), HUD Section 8, 5%, 2/01/2042 (Put Date 9/01/2025) | 1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1505361** |
| New Mexico Mortgage Finance Authority, Multi-Family Housing Rev. (Santa Fe Apartment & Sangre de Cristo Project), HUD Section 8, 5%, 2/01/2042 (Put Date 6/01/2025) | 2375000 | &nbsp;&nbsp;&nbsp;&nbsp; **2375329** |
| New Mexico Mortgage Finance Authority, Single Family Mortgage Program Class I, "E", GNMA, 6.25%, 9/01/2053 | 4940000 | &nbsp;&nbsp;&nbsp;&nbsp; **5338063** |
| New Mexico Mortgage Finance Authority, Single Family Mortgage Program, "A", GNMA, 5.75%, 3/01/2056 | 5645000 | &nbsp;&nbsp;&nbsp;&nbsp; **6111436** |
|  |  | &nbsp;&nbsp; **$28735226** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| New York – 5.0% | New York – 5.0% | New York – 5.0% |
| Build NYC Resource Corp. Rev. (Grand Concourse Academy Charter School Project), "A", 3.4%, 7/01/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;185000 | &nbsp;&nbsp;$182736 |
| Monroe County, NY, Industrial Development Corp. Rev. (Rochester Regional Health Project), "A", 5%, 12/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp; **723886** |
| New York Dormitory Authority, Pace University Rev., "A", 5.25%, 5/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;375000 | &nbsp;&nbsp;&nbsp; **405151** |
| New York Dormitory Authority, Pace University Rev., "A", 5.25%, 5/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp; **652683** |
| New York Dormitory Authority, Pace University Rev., "A", 5.25%, 5/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp; **655424** |
| New York Dormitory Authority, Pace University Rev., "A", 5.25%, 5/01/2034 | &nbsp;&nbsp;&nbsp;&nbsp;610000 | &nbsp;&nbsp;&nbsp; **668327** |
| New York Dormitory Authority, Pace University Rev., "A", 5.25%, 5/01/2035 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **818517** |
| New York Dormitory Authority, Personal Income Tax Rev. (General Purpose), 5.25%, 3/15/2039 | &nbsp;&nbsp;3070000 | &nbsp;&nbsp;&nbsp;&nbsp; **3187058** |
| New York Energy Research & Development Authority, Pollution Control Rev. (New York State Electric & Gas Corp. Project), "C", 4%, 4/01/2034 (Put Date 4/01/2034) | &nbsp;&nbsp;6800000 | &nbsp;&nbsp;&nbsp;&nbsp; **6831276** |
| New York Environmental Facilities Corp. Rev., Solid Waste Disposal (Casella Waste Management, Inc. Project), 2.75%, 9/01/2050 (Put Date 9/02/2025) (n) | &nbsp;&nbsp;&nbsp;&nbsp;800000 | &nbsp;&nbsp;&nbsp; **793661** |
| New York Housing Development Corp., Multi-Family Housing Rev. (Sustainable Development), "F-2-A", 3.4%, 11/01/2062 (Put Date 12/22/2026) | &nbsp;&nbsp;6940000 | &nbsp;&nbsp;&nbsp;&nbsp; **6907486** |
| New York Housing Finance Agency Affordable Housing Rev., "A-2", 2.5%, 11/01/2060 (Put Date 5/01/2027) | 17950000 | &nbsp;&nbsp;&nbsp;&nbsp; **17470254** |
| New York Housing Finance Agency Affordable Housing Rev., "A-2", HUD Section 8, 3.75%, 11/01/2062 (Put Date 11/01/2029) | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3007256** |
| New York Housing Finance Agency Affordable Housing Rev., "G-2", HUD Section 8, 3.45%, 5/01/2062 (Put Date 5/01/2027) | &nbsp;&nbsp;1730000 | &nbsp;&nbsp;&nbsp;&nbsp; **1713877** |
| New York Housing Finance Agency Affordable Housing Rev., "L-2", 0.75%, 11/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **350000** |
| New York Housing Finance Agency Personal Income Tax Rev., "A-2", 3.45%, 6/15/2054 (Put Date 12/15/2030) | &nbsp;&nbsp;2445000 | &nbsp;&nbsp;&nbsp;&nbsp; **2412521** |
| New York Mortgage Agency Homeowner Mortgage Rev., "243", 5%, 10/01/2025 | &nbsp;&nbsp;2030000 | &nbsp;&nbsp;&nbsp;&nbsp; **2040461** |
| New York Mortgage Agency Homeowner Mortgage Rev., "243", 5%, 4/01/2026 | &nbsp;&nbsp;2065000 | &nbsp;&nbsp;&nbsp;&nbsp; **2089439** |
| New York Mortgage Agency Homeowner Mortgage Rev., "4th-9th", 3.25%, 10/01/2028 | &nbsp;&nbsp;1985000 | &nbsp;&nbsp;&nbsp;&nbsp; **1947850** |
| New York Transportation Development Corp., Special Facilities Rev. (Delta Airlines, Inc. LaGuardia Airport Terminals C&D Redevelopment Project), 5%, 1/01/2028 | &nbsp;&nbsp;3965000 | &nbsp;&nbsp;&nbsp;&nbsp; **4040817** |
| New York Transportation Development Corp., Special Facilities Rev. (Terminal 4 John F. Kennedy International Airport Project), 5%, 12/01/2026 | &nbsp;&nbsp;8635000 | &nbsp;&nbsp;&nbsp;&nbsp; **8775675** |
| New York Transportation Development Corp., Special Facilities Rev. (Terminal 4 John F. Kennedy International Airport Project), "A", 5%, 12/01/2025 | &nbsp;&nbsp;1100000 | &nbsp;&nbsp;&nbsp;&nbsp; **1105422** |
| New York Urban Development Corp., Personal Income Tax Rev., "A", 5%, 3/15/2035 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10127171** |
| New York, NY, City Housing Development Corp., Multi-Family Housing Rev. (Green Bonds), "A-2", 3.25%, 11/01/2064 (Put Date 7/02/2029) | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4893210** |
| New York, NY, City Housing Development Corp., Multi-Family Housing Rev. (Green Bonds), "B-2", 3.95%, 11/01/2064 (Put Date 7/02/2029) | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5028903** |
| New York, NY, City Housing Development Corp., Multi-Family Housing Rev., "A-2", FHA, 0.9%, 5/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **500000** |
| New York, NY, City Housing Development Corp., Multi-Family Housing Rev., "A-2", FHA, 1%, 11/01/2025 | &nbsp;&nbsp;1450000 | &nbsp;&nbsp;&nbsp;&nbsp; **1432108** |
| New York, NY, City Housing Development Corp., Multi-Family Housing Rev., "A-2", FHA, 1.1%, 5/01/2026 | &nbsp;&nbsp;3305000 | &nbsp;&nbsp;&nbsp;&nbsp; **3194094** |
| New York, NY, City Housing Development Corp., Multi-Family Housing Rev., "A-2", FHA, 1.15%, 11/01/2026 | &nbsp;&nbsp;1290000 | &nbsp;&nbsp;&nbsp;&nbsp; **1223643** |
| Oneida County, NY, Local Development Corp. Rev. (Mohawk Valley Health System Project), "A", AGM, 5%, 12/01/2026 | &nbsp;&nbsp;1625000 | &nbsp;&nbsp;&nbsp;&nbsp; **1638568** |
| Oneida County, NY, Local Development Corp. Rev. (Mohawk Valley Health System Project), "A", AGM, 5%, 12/01/2027 | &nbsp;&nbsp;1425000 | &nbsp;&nbsp;&nbsp;&nbsp; **1436801** |
| Oneida County, NY, Local Development Corp. Rev. (Mohawk Valley Health System Project), "A", AGM, 5%, 12/01/2028 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1008282** |
| Oneida County, NY, Local Development Corp. Rev. (Mohawk Valley Health System Project), "A", AGM, 5%, 12/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;&nbsp; **176447** |
| Port Authority of NY & NJ (207th Series), 5%, 9/15/2027 | &nbsp;&nbsp;1755000 | &nbsp;&nbsp;&nbsp;&nbsp; **1812312** |
| Port Authority of NY & NJ (246th Series), 5%, 9/01/2028 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5213582** |
| Port Authority of NY & NJ (246th Series), 5%, 9/01/2031 | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **10650020** |
| Poughkeepsie, NY, Public Improvement, 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;235000 | &nbsp;&nbsp;&nbsp; **235090** |
| St. Lawrence County, NY, Industrial Development Agency, Civic Development Corp. Rev., Taxable (Clarkson University Project), "C", 1.7%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;110000 | &nbsp;&nbsp;&nbsp; **108873** |
| St. Lawrence County, NY, Industrial Development Agency, Civic Development Corp. Rev., Taxable (Clarkson University Project), "C", 1.95%, 9/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;140000 | &nbsp;&nbsp;&nbsp; **134968** |
| St. Lawrence County, NY, Industrial Development Agency, Civic Development Corp. Rev., Taxable (Clarkson University Project), "C", 2.2%, 9/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;135000 | &nbsp;&nbsp;&nbsp; **127515** |
| Syracuse, NY, Regional Airport Authority Senior Airport Rev., 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **750424** |
| Syracuse, NY, Regional Airport Authority Senior Airport Rev., 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp; **252043** |
| Tobacco Settlement Asset Securitization Corp., NY, "1", 5%, 6/01/2025 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1000375** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| New York – continued | New York – continued | New York – continued |
| Tobacco Settlement Asset Securitization Corp., NY, "1", 5%, 6/01/2026 | $&nbsp;&nbsp;2000000 | &nbsp;&nbsp;$2026805 |
| Tobacco Settlement Asset Securitization Corp., NY, "1", 5%, 6/01/2027 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1538610** |
| Triborough Bridge & Tunnel Authority Rev., NY, Payroll Mobility Tax (MTA Bridges and Tunnels), "A-2", 2%, 5/15/2045 (Put Date 5/15/2026) | 10000000 | &nbsp;&nbsp;&nbsp;&nbsp; **9804410** |
|  |  | &nbsp;&nbsp; **$131094031** |
| North Carolina – 1.4% | North Carolina – 1.4% | North Carolina – 1.4% |
| Columbus County, NC, Industrial Facilities & Pollution Control, Financing Authority Rev. (International Paper Co.), "A", 1.375%, 5/01/2034 (Put Date 6/16/2025) | $&nbsp;&nbsp;1000000 | &nbsp;&nbsp;$996094 |
| Cumberland County, NC, Industrial Facilities and Pollution Control Financing Authority, Solid Waste Disposal Rev. (Project Aero), 3.75%, 12/01/2027 (Put Date 11/01/2025) | &nbsp;&nbsp;&nbsp;&nbsp;635000 | &nbsp;&nbsp;&nbsp; **635144** |
| Greater Asheville, NC, Regional Airport Authority System Rev., AGM, 5%, 7/01/2034 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1595733** |
| Greater Asheville, NC, Regional Airport Authority System Rev., AGM, 5%, 7/01/2035 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1057705** |
| Greater Asheville, NC, Regional Airport Authority System Rev., AGM, 5%, 7/01/2036 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp; **735699** |
| Greater Asheville, NC, Regional Airport Authority System Rev., "A", AGM, 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **771888** |
| Greater Asheville, NC, Regional Airport Authority System Rev., "A", AGM, 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;725000 | &nbsp;&nbsp;&nbsp; **752645** |
| Greater Asheville, NC, Regional Airport Authority System Rev., "A", AGM, 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;&nbsp; **941405** |
| Greater Asheville, NC, Regional Airport Authority System Rev., "A", AGM, 5%, 7/01/2031 | &nbsp;&nbsp;1370000 | &nbsp;&nbsp;&nbsp;&nbsp; **1454622** |
| North Carolina Education Assistance Authority, Student Loan Rev., "A", 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;250000 | &nbsp;&nbsp;&nbsp; **250187** |
| North Carolina Education Assistance Authority, Student Loan Rev., "A", 5%, 6/01/2027 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1281099** |
| North Carolina Education Assistance Authority, Student Loan Rev., "A", 5.5%, 6/01/2031 | &nbsp;&nbsp;3250000 | &nbsp;&nbsp;&nbsp;&nbsp; **3469140** |
| North Carolina Education Assistance Authority, Student Loan Rev., "A", 5.5%, 6/01/2032 | &nbsp;&nbsp;3250000 | &nbsp;&nbsp;&nbsp;&nbsp; **3481843** |
| North Carolina Education Assistance Authority, Student Loan Rev., "A", 5.5%, 6/01/2033 | &nbsp;&nbsp;3250000 | &nbsp;&nbsp;&nbsp;&nbsp; **3482871** |
| North Carolina Education Assistance Authority, Student Loan Rev., "A", 5%, 6/01/2043 | &nbsp;&nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp; **851461** |
| North Carolina Housing Finance Agency, Home Ownership Rev., "48", 5%, 1/01/2028 | &nbsp;&nbsp;2175000 | &nbsp;&nbsp;&nbsp;&nbsp; **2265196** |
| North Carolina Housing Finance Agency, Home Ownership Rev., "48", 5%, 7/01/2030 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1591240** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Refunding Rev. (Lutheran Services for the Aging), "C", 5%, 3/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;440000 | &nbsp;&nbsp;&nbsp; **441782** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Refunding Rev. (Lutheran Services for the Aging), "C", 5%, 3/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;460000 | &nbsp;&nbsp;&nbsp; **464509** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Refunding Rev. (Lutheran Services for the Aging), "C", 5%, 3/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;365000 | &nbsp;&nbsp;&nbsp; **370451** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Refunding Rev. (Lutheran Services for the Aging), "C", 4%, 3/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;760000 | &nbsp;&nbsp;&nbsp; **747950** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Refunding Rev. (Lutheran Services for the Aging), "C", 4%, 3/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;790000 | &nbsp;&nbsp;&nbsp; **773805** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Refunding Rev. (Lutheran Services for the Aging), "C", 4%, 3/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;820000 | &nbsp;&nbsp;&nbsp; **799790** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Lutheran Services for the Aging), "A", 5%, 3/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;245000 | &nbsp;&nbsp;&nbsp; **245993** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Lutheran Services for the Aging), "A", 5%, 3/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;290000 | &nbsp;&nbsp;&nbsp; **292843** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Lutheran Services for the Aging), "A", 5%, 3/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;185000 | &nbsp;&nbsp;&nbsp; **187763** |
| North Carolina Medical Care Commission, Health Care Facilities First Mortgage Rev. (Presbyterian Homes Obligated Group), "A", 4%, 10/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;&nbsp; **597485** |
| North Carolina Medical Care Commission, Retirement Facilities First Mortgage Rev. (United Methodist Retirement Homes Project), "B1", 4.25%, 10/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;285000 | &nbsp;&nbsp;&nbsp; **283690** |
| North Carolina Medical Care Commission, Retirement Facilities First Mortgage Rev. (United Methodist Retirement Homes Project), "B-2", 3.75%, 10/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp; **520911** |
| North Carolina Turnpike Authority, Triangle Expressway System Turnpike Rev., AGM, 5%, 1/01/2026 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1515616** |
| Raleigh Durham, NC, Airport Authority Rev., "A", 5%, 5/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;645000 | &nbsp;&nbsp;&nbsp; **645000** |
| Raleigh Durham, NC, Airport Authority Rev., "A", 5%, 5/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1015329** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| North Carolina – continued | North Carolina – continued | North Carolina – continued |
| Raleigh-Durham, NC, Airport Authority Rev., "C", 5%, 5/01/2030 | $1000000 | &nbsp;&nbsp;$1022928 |
|  |  | &nbsp;&nbsp; **$35539817** |
| North Dakota – 0.1% | North Dakota – 0.1% | North Dakota – 0.1% |
| Horace, ND, Temporary Refunding Improvement, "B", 4.85%, 8/01/2026 | $2340000 | &nbsp;&nbsp;$2341483 |
| Ohio – 3.4% | Ohio – 3.4% | Ohio – 3.4% |
| Akron, Bath, & Copley, OH, Joint Township Hospital District Facilities Rev. (Summa Health Obligated Group), 5%, 11/15/2026 | $&nbsp;&nbsp;&nbsp;530000 | &nbsp;&nbsp;$541061 |
| Akron, Bath, & Copley, OH, Joint Township Hospital District Facilities Rev. (Summa Health Obligated Group), 5%, 11/15/2028 | &nbsp;&nbsp;&nbsp;240000 | &nbsp;&nbsp;&nbsp; **249926** |
| Cleveland, OH, Airport System Rev., "A", 5%, 1/01/2026 | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3031784** |
| Columbus, OH, Metropolitan Housing Authority Affordable Housing Rev. (Cobblestone Manor Project), 5%, 8/01/2027 | 1930000 | &nbsp;&nbsp;&nbsp;&nbsp; **1958408** |
| Columbus, OH, Metropolitan Housing Authority, General Rev. (Orchards Project & Eden Park Project), 4%, 12/01/2034 | 2695000 | &nbsp;&nbsp;&nbsp;&nbsp; **2648152** |
| Columbus, OH, Metropolitan Housing Authority, General Rev. (Waldren Woods Project), 4%, 6/01/2034 | 2755000 | &nbsp;&nbsp;&nbsp;&nbsp; **2647140** |
| Columbus, OH, Regional Airport Authority Rev. (John Glenn Columbus International Airport), "A", AGM, 5%, 1/01/2033 | 4300000 | &nbsp;&nbsp;&nbsp;&nbsp; **4531221** |
| Columbus, OH, Regional Airport Authority Rev. (John Glenn Columbus International Airport), "A", AGM, 5%, 1/01/2034 | 3120000 | &nbsp;&nbsp;&nbsp;&nbsp; **3300784** |
| Columbus, OH, Regional Airport Authority Rev. (John Glenn Columbus International Airport), "A", AGM, 5%, 1/01/2035 | 2695000 | &nbsp;&nbsp;&nbsp;&nbsp; **2841764** |
| Cuyahoga County, OH, Hospital Rev. (MetroHealth System), 5%, 2/15/2026 | 2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2015626** |
| Cuyahoga County, OH, Hospital Rev. (MetroHealth System), 5%, 2/15/2027 | 2150000 | &nbsp;&nbsp;&nbsp;&nbsp; **2194271** |
| Cuyahoga County, OH, Metropolitan Housing Authority, Multi-Family Housing Rev. (Carver Park Phase III Project), FHA, 4%, 6/01/2026 (Put Date 6/01/2025) | 3412000 | &nbsp;&nbsp;&nbsp;&nbsp; **3411874** |
| Cuyahoga County, OH, Metropolitan Housing Authority, Multi-Family Housing Rev. (Wade Park Apartments), 4.75%, 12/01/2027 (Put Date 12/01/2025) | 2800000 | &nbsp;&nbsp;&nbsp;&nbsp; **2816819** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2027 | &nbsp;&nbsp;&nbsp;680000 | &nbsp;&nbsp;&nbsp; **687494** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2028 | &nbsp;&nbsp;&nbsp;820000 | &nbsp;&nbsp;&nbsp; **833743** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2029 | &nbsp;&nbsp;&nbsp;860000 | &nbsp;&nbsp;&nbsp; **878483** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2030 | &nbsp;&nbsp;&nbsp;905000 | &nbsp;&nbsp;&nbsp; **928716** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2031 | &nbsp;&nbsp;&nbsp;950000 | &nbsp;&nbsp;&nbsp; **978033** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2032 | &nbsp;&nbsp;&nbsp;995000 | &nbsp;&nbsp;&nbsp;&nbsp; **1025734** |
| Hamilton County, OH, Healthcare Rev. (Life Enriching Communities Project), "A", 5%, 1/01/2033 | 1045000 | &nbsp;&nbsp;&nbsp;&nbsp; **1079317** |
| Huber Heights, OH, Various Purpose Anticipation Notes (General Obligation), 4.5%, 7/10/2025 | 4900000 | &nbsp;&nbsp;&nbsp;&nbsp; **4905645** |
| Lorain, OH, General Obligation, BAM, 4%, 12/01/2025 | &nbsp;&nbsp;&nbsp;815000 | &nbsp;&nbsp;&nbsp; **817798** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2026 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **508209** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2027 | &nbsp;&nbsp;&nbsp;580000 | &nbsp;&nbsp;&nbsp; **595501** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2028 | 1455000 | &nbsp;&nbsp;&nbsp;&nbsp; **1506762** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2030 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1049528** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2031 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1055973** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2032 | &nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;&nbsp; **945430** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2033 | &nbsp;&nbsp;&nbsp;800000 | &nbsp;&nbsp;&nbsp; **837807** |
| Middleburg Heights, OH, Hospital Facilities Improvement Rev. (Southwest General Health Center Project), "A", 5%, 8/01/2034 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1041856** |
| Northeast Ohio Medical University, General Receipts, "A", 5%, 12/01/2026 | &nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp; **203607** |
| Northeast Ohio Medical University, General Receipts, "A", 5%, 12/01/2028 | &nbsp;&nbsp;&nbsp;120000 | &nbsp;&nbsp;&nbsp; **124159** |
| Northeast Ohio Medical University, General Receipts, "A", 5%, 12/01/2030 | &nbsp;&nbsp;&nbsp;135000 | &nbsp;&nbsp;&nbsp; **141067** |
| Ohio Air Quality Development Authority Refunding Rev. (Duke Energy Corp. Project), "A", 4.25%, 11/01/2039 (Put Date 6/01/2027) | 2895000 | &nbsp;&nbsp;&nbsp;&nbsp; **2909735** |
| Ohio Air Quality Development Authority Refunding Rev. (Duke Energy Corp. Project), "B", 4%, 9/01/2030 (Put Date 6/01/2027) | 3430000 | &nbsp;&nbsp;&nbsp;&nbsp; **3445474** |
| Ohio Air Quality Development Authority, Facilities Rev. (Pratt Paper LLC Project), 3.75%, 1/15/2028 (n) | &nbsp;&nbsp;&nbsp;305000 | &nbsp;&nbsp;&nbsp; **301858** |
| Ohio Higher Educational Facility Commission Rev. (Cleveland Institute of Music 2022 Project), 5%, 12/01/2027 | &nbsp;&nbsp;&nbsp;555000 | &nbsp;&nbsp;&nbsp; **562337** |
| Ohio Higher Educational Facility Rev. (Case Western Reserve University Project), "C", 1.625%, 12/01/2034 (Put Date 12/01/2026) | 5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4819906** |
| Ohio Housing Finance Agency, Multi-Family Housing Rev. (Post Oak Station), HUD Section 8, 3.85%, 7/01/2025 | 7460000 | &nbsp;&nbsp;&nbsp;&nbsp; **7457663** |
| Ohio Housing Finance Agency, Multi-Family Housing Rev. (Thornwood Commons), HUD Section 8, 5%, 12/01/2026 (Put Date 12/01/2025) | 2460000 | &nbsp;&nbsp;&nbsp;&nbsp; **2479142** |
| Ohio Housing Finance Agency, Multi-Family Tax-Exempt Mortgage (MacArthur Park Apartments Project), "A", FNMA, 4.5%, 5/01/2039 | 7259420 | &nbsp;&nbsp;&nbsp;&nbsp; **7473549** |
| Ohio Housing Finance Agency, Residential Mortgage Rev. (Mortgage-Backed Securities Program), "C", FNMA, 5.75%, 3/01/2054 | 5180000 | &nbsp;&nbsp;&nbsp;&nbsp; **5442217** |
| Ohio State Hospital Rev. (Premier Health Partners Obligated Group), 5%, 11/15/2026 | &nbsp;&nbsp;&nbsp;140000 | &nbsp;&nbsp;&nbsp; **142291** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Ohio – continued | Ohio – continued | Ohio – continued |
| Ohio State Hospital Rev. (Premier Health Partners Obligated Group), 5%, 11/15/2027 | $&nbsp;&nbsp;&nbsp;420000 | &nbsp;&nbsp;$430317 |
| Ohio State Hospital Rev. (Premier Health Partners Obligated Group), 5%, 11/15/2028 | &nbsp;&nbsp;&nbsp;370000 | &nbsp;&nbsp;&nbsp; **382080** |
| Ohio State Hospital Rev. (Premier Health Partners Obligated Group), 5%, 11/15/2029 | &nbsp;&nbsp;&nbsp;825000 | &nbsp;&nbsp;&nbsp; **857607** |
| Ohio State Hospital Rev. (Premier Health Partners Obligated Group), 5%, 11/15/2031 | &nbsp;&nbsp;&nbsp;475000 | &nbsp;&nbsp;&nbsp; **495675** |
| Ohio State Hospital Rev. (Premier Health Partners Obligated Group), 5%, 11/15/2032 | &nbsp;&nbsp;&nbsp;290000 | &nbsp;&nbsp;&nbsp; **301638** |
|  |  | &nbsp;&nbsp; **$89835181** |
| Oklahoma – 0.3% | Oklahoma – 0.3% | Oklahoma – 0.3% |
| Oklahoma Housing Finance Agency, Single Family Mortgage Rev. (Homeownership Loan Project), "D", GNMA, 6.5%, 9/01/2054 | $2170000 | &nbsp;&nbsp;$2401375 |
| Oklahoma Turnpike Authority, Turnpike System Refunding Second Senior Rev., "B", 5%, 1/01/2032 (w) | 1650000 | &nbsp;&nbsp;&nbsp;&nbsp; **1780488** |
| Oklahoma Turnpike Authority, Turnpike System Refunding Second Senior Rev., "B", 5%, 1/01/2037 (w) | 2075000 | &nbsp;&nbsp;&nbsp;&nbsp; **2258878** |
| Tulsa County, OK, Industrial Authority, Senior Living Community Rev. (Montereau, Inc.), 5%, 11/15/2025 | &nbsp;&nbsp;&nbsp;800000 | &nbsp;&nbsp;&nbsp; **799396** |
| Tulsa County, OK, Industrial Authority, Senior Living Community Rev. (Montereau, Inc.), 5%, 11/15/2026 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **501181** |
| Tulsa, OK, Trustees of the Tulsa Airports Improvement Trust, General Airport Rev., "A", BAM, 4%, 6/01/2025 | &nbsp;&nbsp;&nbsp;440000 | &nbsp;&nbsp;&nbsp; **440009** |
| Tulsa, OK, Trustees of the Tulsa Airports Improvement Trust, General Airport Rev., "A", BAM, 4%, 6/01/2026 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **301801** |
|  |  | &nbsp;&nbsp; **$8483128** |
| Oregon – 0.4% | Oregon – 0.4% | Oregon – 0.4% |
| Oregon Facilities Authority Rev. (Samaritan Health Services Project), "A", 5%, 10/01/2025 | $&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;$225690 |
| Oregon Facilities Authority Rev. (Samaritan Health Services Project), "A", 5%, 10/01/2026 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **152038** |
| Oregon Facilities Authority Rev. (Samaritan Health Services Project), "A", 5%, 10/01/2027 | &nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **128255** |
| Oregon Facilities Authority Rev. (Samaritan Health Services Project), "A", 5%, 10/01/2028 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **155047** |
| Oregon Facilities Authority Rev. (Samaritan Health Services Project), "A", 5%, 10/01/2029 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **311746** |
| Oregon Facilities Authority Rev. (Samaritan Health Services Project), "A", 5%, 10/01/2030 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **313626** |
| Oregon Facilities Authority, Lease Rent Rev. (Legacy Health System - Centurion Foundation), "A", 4.9%, 9/15/2035 | 7850000 | &nbsp;&nbsp;&nbsp;&nbsp; **7914992** |
| Port of Portland, OR, International Airport Rev., "24B", 5%, 7/01/2025 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1002132** |
| Union County, OR, Hospital Facility Authority Rev. (Grande Ronde Hospital Project), 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **125109** |
| Union County, OR, Hospital Facility Authority Rev. (Grande Ronde Hospital Project), 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;425000 | &nbsp;&nbsp;&nbsp; **434302** |
| Union County, OR, Hospital Facility Authority Rev. (Grande Ronde Hospital Project), 5%, 7/01/2029 | &nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp; **413756** |
| Union County, OR, Hospital Facility Authority Rev. (Grande Ronde Hospital Project), 5%, 7/01/2030 | &nbsp;&nbsp;&nbsp;300000 | &nbsp;&nbsp;&nbsp; **311302** |
|  |  | &nbsp;&nbsp; **$11487995** |
| Pennsylvania – 6.6% | Pennsylvania – 6.6% | Pennsylvania – 6.6% |
| Adams County, PA, General Authority Rev. (Brethren Home Community Project), "B-2", 3.6%, 6/01/2029 | $1500000 | &nbsp;&nbsp;$1461825 |
| Allegheny County, PA, Airport Authority Rev. (Pittsburgh International Airport), "A", AGM, 5%, 1/01/2031 | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3169988** |
| Allegheny County, PA, Airport Authority Rev. (Pittsburgh International Airport), "A", AGM, 5%, 1/01/2032 | 6195000 | &nbsp;&nbsp;&nbsp;&nbsp; **6579177** |
| Allegheny County, PA, Airport Authority Rev. (Pittsburgh International Airport), "A", AGM, 5%, 1/01/2033 | 3230000 | &nbsp;&nbsp;&nbsp;&nbsp; **3440767** |
| Allegheny County, PA, Hospital Development Authority Rev. (Allegheny Health Network Obligated Group), "A", 5%, 4/01/2026 | 2750000 | &nbsp;&nbsp;&nbsp;&nbsp; **2788186** |
| Allentown, PA, City School District General Obligation, BAM, 5%, 2/01/2026 | 4155000 | &nbsp;&nbsp;&nbsp;&nbsp; **4204779** |
| Allentown, PA, City School District General Obligation, "B", BAM, 5%, 6/01/2036 | 1310000 | &nbsp;&nbsp;&nbsp;&nbsp; **1326814** |
| Allentown, PA, Neighborhood Improvement Zone Development Authority Tax Refunding Rev., 5%, 5/01/2025 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **500000** |
| Allentown, PA, Neighborhood Improvement Zone Development Authority Tax Refunding Rev., 5%, 5/01/2026 | &nbsp;&nbsp;&nbsp;490000 | &nbsp;&nbsp;&nbsp; **496691** |
| Altoona, PA, Area School District, Taxable, AGM, 1.005%, 12/01/2025 | &nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;&nbsp; **883867** |
| Beaver County, PA, Rochester Area School District, BAM, 3%, 5/01/2025 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **500000** |
| Berks County, PA, Municipal Authority Rev. (Tower Health Project), "A-2", 6%, 6/30/2034 | 1157000 | &nbsp;&nbsp;&nbsp;&nbsp; **1208432** |
| Berks County, PA, Municipal Authority Rev. (Tower Health Project), "A-3", 5%, 6/30/2039 | 9312000 | &nbsp;&nbsp;&nbsp;&nbsp; **8607491** |
| Berks County, PA, Municipal Authority Rev. (Tower Health Project), Convertible Capital Appreciation, "B-1", 0% to 11/15/2029, 6% to 6/30/2044 | 4654074 | &nbsp;&nbsp;&nbsp;&nbsp; **3341210** |
| Berks County, PA, Municipal Authority Rev., Taxable (Tower Health Project), "A-1", 8%, 6/30/2034 | 1515000 | &nbsp;&nbsp;&nbsp;&nbsp; **1515722** |
| Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 4%, 12/01/2025 | &nbsp;&nbsp;&nbsp;360000 | &nbsp;&nbsp;&nbsp; **354863** |
| Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 4%, 12/01/2026 | &nbsp;&nbsp;&nbsp;755000 | &nbsp;&nbsp;&nbsp; **726451** |
| Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 4%, 12/01/2027 | &nbsp;&nbsp;&nbsp;795000 | &nbsp;&nbsp;&nbsp; **747494** |
| Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 4%, 12/01/2028 | &nbsp;&nbsp;&nbsp;830000 | &nbsp;&nbsp;&nbsp; **763327** |
| Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 4%, 12/01/2029 | &nbsp;&nbsp;&nbsp;865000 | &nbsp;&nbsp;&nbsp; **777245** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Pennsylvania – continued | Pennsylvania – continued | Pennsylvania – continued |
| Chester County, PA, Health & Education Facilities Authority Rev. (Simpson Senior Services Project), 4%, 12/01/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;$395110 |
| Dallas, PA, Municipal Authority, University Rev. (Misericordia University Project), 5%, 5/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp; **224960** |
| Delaware Valley, PA, Regional Finance Authority, "A", 2%, 10/01/2029 | &nbsp;&nbsp;4550000 | &nbsp;&nbsp;&nbsp;&nbsp; **4066037** |
| Doylestown, PA, Hospital Authority Rev., 5%, 7/01/2031 | &nbsp;&nbsp;1400000 | &nbsp;&nbsp;&nbsp;&nbsp; **1460699** |
| Lackawanna County, PA, General Obligation, BAM, 4%, 9/15/2035 | &nbsp;&nbsp;1465000 | &nbsp;&nbsp;&nbsp;&nbsp; **1382805** |
| Lancaster County, PA, Hospital Authority Health Center Rev. (Masonic Villages Project), 5%, 11/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp; **265122** |
| Lancaster County, PA, Pequea Valley School District, 1.5%, 5/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;125000 | &nbsp;&nbsp;&nbsp; **124822** |
| Lancaster County, PA, Pequea Valley School District, 4%, 5/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;100000 | &nbsp;&nbsp;&nbsp; **100013** |
| Lancaster County, PA, Pequea Valley School District, 1.5%, 5/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **145803** |
| Lancaster, PA, Higher Education Authority College Rev. (Harrisburg Area Community College Project), BAM, 5%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;630000 | &nbsp;&nbsp;&nbsp; **633601** |
| Lancaster, PA, Higher Education Authority College Rev. (Harrisburg Area Community College Project), BAM, 4%, 10/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **502206** |
| Lancaster, PA, Parking Rev., "A", BAM, 4%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp; **525935** |
| Lancaster, PA, Parking Rev., "A", BAM, 3%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **498287** |
| Lancaster, PA, Parking Rev., "A", BAM, 4%, 9/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;410000 | &nbsp;&nbsp;&nbsp; **412038** |
| Lancaster, PA, Parking Rev., "A", BAM, 3%, 12/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp; **500565** |
| Lancaster, PA, Parking Rev., "A", BAM, 4%, 9/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;115000 | &nbsp;&nbsp;&nbsp; **115377** |
| Lancaster, PA, Parking Rev., "A", BAM, 4%, 9/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;440000 | &nbsp;&nbsp;&nbsp; **439846** |
| Lehigh County, PA, General Purpose Authority, College Rev. (Muhlenberg College Project), 5%, 2/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;585000 | &nbsp;&nbsp;&nbsp; **609030** |
| Lehigh County, PA, General Purpose Authority, College Rev. (Muhlenberg College Project), 5%, 2/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **536893** |
| Lehigh County, PA, General Purpose Authority, College Rev. (Muhlenberg College Project), 5%, 2/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;825000 | &nbsp;&nbsp;&nbsp; **892713** |
| Luzerne, Carbon and Schuylkill Counties, PA, Hazleton Area School District, General Obligation, "A", AGM, 2%, 3/01/2029 | &nbsp;&nbsp;1135000 | &nbsp;&nbsp;&nbsp;&nbsp; **1040093** |
| Luzerne, Carbon and Schuylkill Counties, PA, Hazleton Area School District, General Obligation, Taxable, "B", AGM, 1.229%, 3/01/2026 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1220318** |
| Luzerne, Carbon and Schuylkill Counties, PA, Hazleton Area School District, General Obligation, Taxable, "B", AGM, 1.47%, 3/01/2027 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp; **954547** |
| Lycoming County, PA, College Rev. (Pennsylvania College of Technology), "A", BAM, 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **501075** |
| Montgomery County, PA, Higher Education & Health Authority Rev. (Thomas Jefferson University), 5%, 9/01/2029 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1063448** |
| Montgomery County, PA, Higher Education & Health Authority Rev. (Thomas Jefferson University), 5%, 9/01/2030 | &nbsp;&nbsp;1350000 | &nbsp;&nbsp;&nbsp;&nbsp; **1425105** |
| Montgomery County, PA, Higher Education & Health Authority Rev. (Thomas Jefferson University), 5%, 9/01/2031 | &nbsp;&nbsp;2355000 | &nbsp;&nbsp;&nbsp;&nbsp; **2484140** |
| Northampton County, PA, General Purpose Authority Hospital Rev. (St. Luke's University Health Network Project), 5%, 8/15/2034 | 10450000 | &nbsp;&nbsp;&nbsp;&nbsp; **11295342** |
| Pennsylvania Economic Development Financing Authority Rev. (Presbyterian Senior Living Project), 4%, 7/01/2030 | &nbsp;&nbsp;1600000 | &nbsp;&nbsp;&nbsp;&nbsp; **1586822** |
| Pennsylvania Economic Development Financing Authority Rev. (Presbyterian Senior Living Project), 4%, 7/01/2033 | &nbsp;&nbsp;1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1714053** |
| Pennsylvania Economic Development Financing Authority Rev. (Rapid Bridge Replacement Project), 5%, 12/31/2038 | &nbsp;&nbsp;2300000 | &nbsp;&nbsp;&nbsp;&nbsp; **2306720** |
| Pennsylvania Economic Development Financing Authority Rev., Private Activity Rev. (Rapid Bridge Replacement Project), 5%, 12/31/2029 | &nbsp;&nbsp;1805000 | &nbsp;&nbsp;&nbsp;&nbsp; **1816337** |
| Pennsylvania Economic Development Financing Authority, (UPMC) Rev., "A", 5%, 3/15/2060 (Put Date 3/15/2035) | 11485000 | &nbsp;&nbsp;&nbsp;&nbsp; **12283969** |
| Pennsylvania Economic Development Financing Authority, Junior Insured Parking Rev. (Capital Region Parking System), "C", AGM, 5%, 1/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;915000 | &nbsp;&nbsp;&nbsp; **923982** |
| Pennsylvania Economic Development Financing Authority, Private Activity Rev. (PennDOT Major Bridges Package One Project), 5%, 12/31/2031 | 10825000 | &nbsp;&nbsp;&nbsp;&nbsp; **11451148** |
| Pennsylvania Economic Development Financing Authority, Private Activity Rev. (Pennsylvania Rapid Bridge Replacement Project), 5%, 12/31/2034 | &nbsp;&nbsp;5500000 | &nbsp;&nbsp;&nbsp;&nbsp; **5530251** |
| Pennsylvania Economic Development Financing Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), "A-2", 4.6%, 10/01/2046 (Put Date 10/01/2026) | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4995341** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "1A", 5%, 6/01/2029 | &nbsp;&nbsp;1550000 | &nbsp;&nbsp;&nbsp;&nbsp; **1610575** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "1A", 5%, 6/01/2030 | &nbsp;&nbsp;2365000 | &nbsp;&nbsp;&nbsp;&nbsp; **2470219** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "1A", 5%, 6/01/2031 | &nbsp;&nbsp;2315000 | &nbsp;&nbsp;&nbsp;&nbsp; **2429845** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "1A", 5%, 6/01/2032 | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2093397** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "1A", 5%, 6/01/2033 | &nbsp;&nbsp;1244000 | &nbsp;&nbsp;&nbsp;&nbsp; **1299868** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2026 | &nbsp;&nbsp;2050000 | &nbsp;&nbsp;&nbsp;&nbsp; **2069604** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;475000 | &nbsp;&nbsp;&nbsp; **479542** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2027 | &nbsp;&nbsp;2700000 | &nbsp;&nbsp;&nbsp;&nbsp; **2748723** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **356316** |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp; **563061** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Pennsylvania – continued | Pennsylvania – continued | Pennsylvania – continued |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;230000 | &nbsp;&nbsp;$236368 |
| Pennsylvania Higher Educational Assistance Agency, Education Loan Rev., "A", 5%, 6/01/2029 | &nbsp;&nbsp;3590000 | &nbsp;&nbsp;&nbsp;&nbsp; **3696169** |
| Pennsylvania Higher Educational Facilities Authority Rev. (Drexel University), "A", AGM, 5%, 5/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp;&nbsp; **350000** |
| Pennsylvania Housing Finance Agency, Multi-Family Housing Development (Cambridge Square), "B", FNMA, 5%, 11/01/2026 (Put Date 11/01/2025) | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **503237** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "128A", 4.75%, 4/01/2033 | &nbsp;&nbsp;1835000 | &nbsp;&nbsp;&nbsp;&nbsp; **1837950** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "133", 5%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp;&nbsp; **754767** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "133", 5%, 10/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;740000 | &nbsp;&nbsp;&nbsp;&nbsp; **759441** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "135B", 5%, 10/01/2025 | &nbsp;&nbsp;1090000 | &nbsp;&nbsp;&nbsp;&nbsp; **1093545** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "135B", 5%, 4/01/2026 | &nbsp;&nbsp;1105000 | &nbsp;&nbsp;&nbsp;&nbsp; **1115092** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "135B", 5%, 10/01/2026 | &nbsp;&nbsp;2250000 | &nbsp;&nbsp;&nbsp;&nbsp; **2279422** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "135B", 5%, 4/01/2027 | &nbsp;&nbsp;2285000 | &nbsp;&nbsp;&nbsp;&nbsp; **2335450** |
| Pennsylvania Housing Finance Agency, Single Family Mortgage Rev., "125A", 3.2%, 10/01/2028 | &nbsp;&nbsp;3550000 | &nbsp;&nbsp;&nbsp;&nbsp; **3422649** |
| Pennsylvania Public School Building Authority, College Rev. (Northampton County Area Community College Project), BAM, 5%, 6/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;375000 | &nbsp;&nbsp;&nbsp;&nbsp; **375635** |
| Philadelphia, PA, Authority for Industrial Development, Charter School Rev. (Green Woods Charter School Project), "A", 5%, 6/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;235000 | &nbsp;&nbsp;&nbsp;&nbsp; **238465** |
| Philadelphia, PA, School District, "A", 5%, 9/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;635000 | &nbsp;&nbsp;&nbsp;&nbsp; **650290** |
| Philadelphia, PA, School District, "A", 5%, 9/01/2027 | &nbsp;&nbsp;1850000 | &nbsp;&nbsp;&nbsp;&nbsp; **1917384** |
| Philadelphia, PA, School District, "A", 5.25%, 9/01/2036 | &nbsp;&nbsp;2250000 | &nbsp;&nbsp;&nbsp;&nbsp; **2455205** |
| Philadelphia, PA, School District, "A", 5.25%, 9/01/2037 | &nbsp;&nbsp;4030000 | &nbsp;&nbsp;&nbsp;&nbsp; **4365960** |
| Philadelphia, PA, School District, "A", 5.25%, 9/01/2038 | &nbsp;&nbsp;1295000 | &nbsp;&nbsp;&nbsp;&nbsp; **1395481** |
| Philadelphia, PA, School District, "F", 5%, 9/01/2026 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5120395** |
| Wayne County, PA, County Guaranteed Hospital Rev. (Wayne Memorial Hospital Project), "A", 5%, 7/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp;&nbsp; **511768** |
| West Shore, PA, Area Authority Rev. (Messiah Village Project), "A", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;560000 | &nbsp;&nbsp;&nbsp;&nbsp; **559443** |
| Westmoreland County, PA, Industrial Development Authority Rev. (Redstone Presbyterian Seniorcare Obligated Group), 4%, 5/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;625000 | &nbsp;&nbsp;&nbsp;&nbsp; **624533** |
| Westmoreland County, PA, Industrial Development Authority Rev. (Redstone Presbyterian Seniorcare Obligated Group), 4%, 5/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp;&nbsp; **148307** |
|  |  | &nbsp;&nbsp; **$172686988** |
| Puerto Rico – 1.9% | Puerto Rico – 1.9% | Puerto Rico – 1.9% |
| Commonwealth of Puerto Rico, General Obligation Restructured, "A", 5.625%, 7/01/2029 | $14750000 | &nbsp;&nbsp;$15331631 |
| Commonwealth of Puerto Rico, General Obligation Restructured, "A", 5.75%, 7/01/2031 | &nbsp;&nbsp;1521000 | &nbsp;&nbsp;&nbsp;&nbsp; **1612542** |
| Puerto Rico Aqueduct and Sewer Authority Rev., "A", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;315000 | &nbsp;&nbsp;&nbsp;&nbsp; **315507** |
| Puerto Rico Aqueduct and Sewer Authority Rev., "A", 5%, 7/01/2025 (n) | &nbsp;&nbsp;4100000 | &nbsp;&nbsp;&nbsp;&nbsp; **4106603** |
| Puerto Rico Aqueduct and Sewer Authority Rev., "B", 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp;&nbsp; **265427** |
| Puerto Rico Electric Power Authority Refunding Rev., "PP", NPFG, 5%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;115000 | &nbsp;&nbsp;&nbsp;&nbsp; **115008** |
| Puerto Rico Electric Power Authority Rev., "TT", NPFG, 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25000 | &nbsp;&nbsp;&nbsp; **25011** |
| Puerto Rico Electric Power Authority Rev., "VV", NPFG, 5.25%, 7/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;195000 | &nbsp;&nbsp;&nbsp;&nbsp; **194790** |
| Puerto Rico Electric Power Authority Rev., "VV", NPFG, 5.25%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;625000 | &nbsp;&nbsp;&nbsp;&nbsp; **619557** |
| Puerto Rico Housing Finance Authority, Multi-Family Housing Collateralized Rev. (Mirador Las Casas Project), "B", 5%, 3/01/2027 (Put Date 3/01/2026) | &nbsp;&nbsp;1575000 | &nbsp;&nbsp;&nbsp;&nbsp; **1594403** |
| Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., "2019A-1", 4.5%, 7/01/2034 | &nbsp;&nbsp;&nbsp;&nbsp;207000 | &nbsp;&nbsp;&nbsp;&nbsp; **202935** |
| Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, "A-1", 0%, 7/01/2029 | 15340000 | &nbsp;&nbsp;&nbsp;&nbsp; **12917138** |
| Puerto Rico Sales Tax Financing Corp., Restructured Sales Tax Rev., Capital Appreciation, "A-1", 0%, 7/01/2033 | 16249000 | &nbsp;&nbsp;&nbsp;&nbsp; **11407831** |
| University of Puerto Rico Rev., "P", NPFG, 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;245000 | &nbsp;&nbsp;&nbsp;&nbsp; **245272** |
|  |  | &nbsp;&nbsp; **$48953655** |
| Rhode Island – 1.8% | Rhode Island – 1.8% | Rhode Island – 1.8% |
| Rhode Island Health and Educational Building Corp. Rev. (Lifespan Obligated Group), 5%, 5/15/2026 | $&nbsp;&nbsp;5000000 | &nbsp;&nbsp;$5063635 |
| Rhode Island Housing & Mortgage Finance Corp., Multi-Family Development (Green Bonds), "1-A", 3.35%, 10/01/2055 (Put Date 10/01/2027) | &nbsp;&nbsp;2550000 | &nbsp;&nbsp;&nbsp;&nbsp; **2524696** |
| Rhode Island Housing & Mortgage Finance Corp., Multi-Family Development (Green Bonds), "1-B", 3.3%, 4/01/2028 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4942725** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Rhode Island – continued | Rhode Island – continued | Rhode Island – continued |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2025 | $&nbsp;&nbsp;&nbsp;600000 | &nbsp;&nbsp;$604915 |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2026 | &nbsp;&nbsp;&nbsp;875000 | &nbsp;&nbsp;&nbsp; **890554** |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2028 | &nbsp;&nbsp;&nbsp;800000 | &nbsp;&nbsp;&nbsp; **825452** |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2029 | 1825000 | &nbsp;&nbsp;&nbsp;&nbsp; **1898054** |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2030 | 1900000 | &nbsp;&nbsp;&nbsp;&nbsp; **1970537** |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2031 | 1960000 | &nbsp;&nbsp;&nbsp;&nbsp; **2050529** |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2032 | 1900000 | &nbsp;&nbsp;&nbsp;&nbsp; **1990548** |
| Rhode Island Student Loan Authority, Education Loan Rev., "B", 5%, 12/01/2028 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **516919** |
| Rhode Island Student Loan Authority, Education Loan Rev., "B", 5%, 12/01/2029 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1038333** |
| Rhode Island Student Loan Authority, Education Loan Rev., "B", 5%, 12/01/2030 | 1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1564016** |
| Rhode Island Student Loan Authority, Education Loan Rev., "B", 5%, 12/01/2031 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1046189** |
| Rhode Island Student Loan Authority, Education Loan Rev., "B", 5%, 12/01/2032 | &nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;&nbsp; **941110** |
| Rhode Island Student Loan Authority, Education Loan Rev., "B", 4.125%, 12/01/2043 | 1775000 | &nbsp;&nbsp;&nbsp;&nbsp; **1617749** |
| Rhode Island Student Loan Authority, Education Loan Rev., "A", 5%, 12/01/2033 | &nbsp;&nbsp;&nbsp;760000 | &nbsp;&nbsp;&nbsp; **793899** |
| Rhode Island Student Loan Authority, Education Loan Rev., Federally Taxable, "1", 4.125%, 12/01/2041 | 4080000 | &nbsp;&nbsp;&nbsp;&nbsp; **3770634** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 4%, 12/01/2025 | 2005000 | &nbsp;&nbsp;&nbsp;&nbsp; **2005249** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2026 | &nbsp;&nbsp;&nbsp;950000 | &nbsp;&nbsp;&nbsp; **964548** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2027 | &nbsp;&nbsp;&nbsp;800000 | &nbsp;&nbsp;&nbsp; **819272** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2028 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1029124** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 3.5%, 12/01/2034 | &nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp; **652056** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2025 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1008076** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2026 | 1125000 | &nbsp;&nbsp;&nbsp;&nbsp; **1146559** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2027 | 2130000 | &nbsp;&nbsp;&nbsp;&nbsp; **2184469** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2028 | 1185000 | &nbsp;&nbsp;&nbsp;&nbsp; **1222701** |
| Rhode Island Student Loan Authority, Student Loan Rev., "A", 5%, 12/01/2029 | 1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1303757** |
|  |  | &nbsp;&nbsp; **$46386305** |
| South Carolina – 1.0% | South Carolina – 1.0% | South Carolina – 1.0% |
| Patriots Energy Group Financing Agency, SC, Gas Supply Rev., "B-1", 5.25%, 2/01/2054 (Put Date 3/01/2031) | $8700000 | &nbsp;&nbsp;$9232602 |
| South Carolina Housing Finance & Development Authority Mortgage Rev., "A", 5%, 7/01/2025 | 1005000 | &nbsp;&nbsp;&nbsp;&nbsp; **1007524** |
| South Carolina Jobs & Economic Development Authority, Economic Development Rev. (Foothill Affordable Housing Foundation - Paddock Club and Fairway Projects), FHLMC, 4%, 3/01/2062 (Put Date 3/01/2035) | &nbsp;&nbsp;&nbsp;860000 | &nbsp;&nbsp;&nbsp; **818980** |
| South Carolina Jobs & Economic Development Authority, Health Facilities Rev. (Anderson Area Medical Center, Inc.), 5%, 2/01/2038 (Prerefunded 2/01/2026) | &nbsp;&nbsp;&nbsp;335000 | &nbsp;&nbsp;&nbsp; **339268** |
| South Carolina Jobs & Economic Development Authority, Health Facilities Rev. (Anderson Area Medical Center, Inc.), 5%, 2/01/2038 | 1345000 | &nbsp;&nbsp;&nbsp;&nbsp; **1347652** |
| South Carolina Jobs & Economic Development Authority, Hospital Facilities Rev. (Bon Secours Mercy Health, Inc.), "B-2", 5%, 11/01/2049 (Put Date 11/01/2032) (w) | 3440000 | &nbsp;&nbsp;&nbsp;&nbsp; **3663050** |
| South Carolina Jobs & Economic Development Authority, Solid Waste Disposal Rev. (Enerra South Carolina Project), 3.7%, 12/15/2027 (Put Date 12/01/2026) | 2145000 | &nbsp;&nbsp;&nbsp;&nbsp; **2130477** |
| South Carolina Student Loan Corp., Student Loan Rev., Taxable, "A", 2.468%, 12/01/2025 | 6850000 | &nbsp;&nbsp;&nbsp;&nbsp; **6759201** |
| Sumter, SC, Two School Facilities, Inc. (Sumter School District), BAM, 5%, 12/01/2025 | 1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1512432** |
|  |  | &nbsp;&nbsp; **$26811186** |
| South Dakota – 0.3% | South Dakota – 0.3% | South Dakota – 0.3% |
| South Dakota Housing Development Authority, Homeownership Mortgage Rev., "A", GNMA, 6.5%, 11/01/2055 | $6250000 | &nbsp;&nbsp;$7038233 |
| Tennessee – 3.0% | Tennessee – 3.0% | Tennessee – 3.0% |
| Chattanooga, TN, Health, Educational & Housing Facility Board, Multi-Family Housing (Shallowford Project), 3.8%, 12/01/2029 (Put Date 12/01/2026) | $2000000 | &nbsp;&nbsp;$2011840 |
| Knox County, TN, Health, Educational & Housing Facility Board Rev. (East Tennessee Children's Hospital), 5%, 11/15/2029 | 1175000 | &nbsp;&nbsp;&nbsp;&nbsp; **1234383** |
| Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2027 | &nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp; **269607** |
| Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2028 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **507538** |
| Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 9/01/2028 | &nbsp;&nbsp;&nbsp;490000 | &nbsp;&nbsp;&nbsp; **495863** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Tennessee – continued | Tennessee – continued | Tennessee – continued |
| Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), 5%, 4/01/2029 | $&nbsp;&nbsp;1450000 | &nbsp;&nbsp;$1469669 |
| Knox County, TN, Health, Educational & Housing Facility Board Rev. (University Health Systems, Inc.), "A", 5%, 9/01/2030 | &nbsp;&nbsp;6970000 | &nbsp;&nbsp;&nbsp;&nbsp; **7159222** |
| Knox County, TN, Health, Educational & Housing Facility Board, Multi-Family Housing Rev. (Westview Towers Project), 3.95%, 12/01/2027 (Put Date 12/01/2025) | &nbsp;&nbsp;&nbsp;&nbsp;930000 | &nbsp;&nbsp;&nbsp; **930537** |
| Memphis-Shelby County, TN, Airport Authority Rev., "A", 5%, 7/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;175000 | &nbsp;&nbsp;&nbsp; **177989** |
| Metropolitan Nashville, TN, Airport Authority Improvement Rev., "B", 5.25%, 7/01/2032 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1368092** |
| Shelby County, TN, New Memphis Arena Public Building Authority, Local Government Public Improvement (City of Memphis Project), Capital Appreciation, 0%, 4/01/2031 | &nbsp;&nbsp;1170000 | &nbsp;&nbsp;&nbsp;&nbsp; **1094567** |
| Tennergy Corp., TN, Gas Supply Rev., "A", 5.25%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;575000 | &nbsp;&nbsp;&nbsp; **579013** |
| Tennergy Corp., TN, Gas Supply Rev., "A", 5.25%, 12/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;725000 | &nbsp;&nbsp;&nbsp; **739677** |
| Tennergy Corp., TN, Gas Supply Rev., "A", 5.5%, 12/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;750000 | &nbsp;&nbsp;&nbsp; **776683** |
| Tennergy Corp., TN, Gas Supply Rev., "A", 5.5%, 10/01/2053 (Put Date 12/01/2030) | 15915000 | &nbsp;&nbsp;&nbsp;&nbsp; **16679157** |
| Tennessee Energy Acquisition Corp., Gas Project Rev., "A", 4%, 11/01/2049 | 18380000 | &nbsp;&nbsp;&nbsp;&nbsp; **18386582** |
| Tennessee Energy Acquisition Corp., Gas Project Rev., "A-1", 5%, 5/01/2053 (Put Date 5/01/2028) | 19000000 | &nbsp;&nbsp;&nbsp;&nbsp; **19488184** |
| Tennessee Housing Development Agency, Residential Finance Program Rev., "1", 5%, 7/01/2025 | &nbsp;&nbsp;1350000 | &nbsp;&nbsp;&nbsp;&nbsp; **1353162** |
| Tennessee Housing Development Agency, Residential Finance Program Rev., "B-3", 3.5%, 7/01/2055 (Put Date 10/01/2025) | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2997584** |
|  |  | &nbsp;&nbsp; **$77719349** |
| Texas – 8.2% | Texas – 8.2% | Texas – 8.2% |
| Arlington, TX, Higher Education Finance Corp. Education Rev. (Basis Texas Charter Schools, Inc.), 4.5%, 6/15/2056 (Put Date 6/15/2026) (n) | $&nbsp;&nbsp;&nbsp;&nbsp;575000 | &nbsp;&nbsp;$572321 |
| Arlington, TX, Housing Finance Corp. Multi-Family Housing Rev. (6900 Matlock Road Project), 4.5%, 4/01/2041 (Put Date 4/01/2027) | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5047248** |
| Austin, TX, Convention Center (Convention Enterprises, Inc.), "A", 5%, 1/01/2032 | &nbsp;&nbsp;1155000 | &nbsp;&nbsp;&nbsp;&nbsp; **1148471** |
| Austin, TX, Convention Center (Convention Enterprises, Inc.), "A", 5%, 1/01/2034 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp; **983203** |
| Bexar County, TX, Venue Project Rev., Taxable, AGM, 1.082%, 8/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;720000 | &nbsp;&nbsp;&nbsp; **713578** |
| Bexar County, TX, Venue Project Rev., Taxable, AGM, 1.272%, 8/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;315000 | &nbsp;&nbsp;&nbsp; **303745** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;940000 | &nbsp;&nbsp;&nbsp; **949431** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2026 | &nbsp;&nbsp;1005000 | &nbsp;&nbsp;&nbsp;&nbsp; **1015083** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;805000 | &nbsp;&nbsp;&nbsp; **820682** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;710000 | &nbsp;&nbsp;&nbsp; **731010** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2028 | &nbsp;&nbsp;1340000 | &nbsp;&nbsp;&nbsp;&nbsp; **1379653** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;495000 | &nbsp;&nbsp;&nbsp; **511910** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5%, 4/01/2029 | &nbsp;&nbsp;1440000 | &nbsp;&nbsp;&nbsp;&nbsp; **1489192** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5.5%, 4/01/2030 | &nbsp;&nbsp;2195000 | &nbsp;&nbsp;&nbsp;&nbsp; **2327766** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5.5%, 4/01/2031 | &nbsp;&nbsp;3875000 | &nbsp;&nbsp;&nbsp;&nbsp; **4143984** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5.5%, 4/01/2032 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5377671** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 5.5%, 4/01/2033 | &nbsp;&nbsp;2500000 | &nbsp;&nbsp;&nbsp;&nbsp; **2691993** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1A", 4%, 4/01/2045 | &nbsp;&nbsp;3175000 | &nbsp;&nbsp;&nbsp;&nbsp; **2795593** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1-A", 5%, 4/01/2033 | &nbsp;&nbsp;7000000 | &nbsp;&nbsp;&nbsp;&nbsp; **7314782** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., "1-A", 5%, 4/01/2034 | &nbsp;&nbsp;6065000 | &nbsp;&nbsp;&nbsp;&nbsp; **6301584** |
| Brazos, TX, Higher Education Authority, Inc., Student Loan Program Rev., Taxable, "1A", 1.974%, 4/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;375000 | &nbsp;&nbsp;&nbsp; **366411** |
| Brownsville, TX, Navigation District Rev., AGM, 5%, 3/01/2026 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1008761** |
| Brownsville, TX, Navigation District Rev., AGM, 5%, 3/01/2027 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1009070** |
| Capital Area, TX, Housing Finance Corp., Multi-Family Housing Rev. (Redwood Apartments), 3.65%, 1/01/2041 (Put Date 1/01/2026) | &nbsp;&nbsp;1125000 | &nbsp;&nbsp;&nbsp;&nbsp; **1125076** |
| Clifton, TX, Higher Education Finance Corp. Rev. (International Leadership of Texas, Inc.), Texas PSF, 5%, 8/15/2027 | &nbsp;&nbsp;1350000 | &nbsp;&nbsp;&nbsp;&nbsp; **1398931** |
| Collin and Hunt Counties, TX, Magnolia Pointe Municipal Utility District No. 1, AGM, 4.5%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;490000 | &nbsp;&nbsp;&nbsp; **490922** |
| Dallas, TX, Housing Finance Corp., Multi-Family Housing Rev. (Highpoint at Wynnewood), 3.5%, 2/01/2044 (Put Date 2/01/2026) | &nbsp;&nbsp;2755000 | &nbsp;&nbsp;&nbsp;&nbsp; **2749026** |
| Dallas, TX, Senior Lien Special Tax Rev. (Fair Park Venue Project), 6.25%, 8/15/2053 (Put Date 8/15/2028) | &nbsp;&nbsp;3540000 | &nbsp;&nbsp;&nbsp;&nbsp; **3541537** |
| Elgin, TX, Tax and Rev., AGM, 4%, 7/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;120000 | &nbsp;&nbsp;&nbsp; **120112** |
| Elgin, TX, Tax and Rev., AGM, 4%, 7/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **150140** |
| EP Cimarron Ventanas, TX, Residential Development Rev. (Home Essential Function Housing Program), 4.25%, 12/01/2034 | &nbsp;&nbsp;6900000 | &nbsp;&nbsp;&nbsp;&nbsp; **6769656** |
| EP Tuscany Zaragosa PFC, TX, Residential Development Rev. (Home Essential Function Housing Program), 4%, 12/01/2033 | 15000000 | &nbsp;&nbsp;&nbsp;&nbsp; **14655842** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Texas – continued | Texas – continued | Texas – continued |
| Fort Bend County, TX, Lamar Consolidated Independent School District, Unlimited Tax Schoolhouse, 5%, 2/15/2037 | $1905000 | &nbsp;&nbsp;$2055853 |
| Fort Bend County, TX, Lamar Consolidated Independent School District, Unlimited Tax Schoolhouse, 5%, 2/15/2038 | 1430000 | &nbsp;&nbsp;&nbsp;&nbsp; **1532697** |
| Galveston, TX, Wharves & Terminal Rev., 5.25%, 8/01/2032 | &nbsp;&nbsp;&nbsp;380000 | &nbsp;&nbsp;&nbsp; **405941** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., 5.25%, 8/01/2026 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **508065** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., 5.25%, 8/01/2027 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **513655** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., 5.25%, 8/01/2029 | &nbsp;&nbsp;&nbsp;965000 | &nbsp;&nbsp;&nbsp;&nbsp; **1011013** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., 5.25%, 8/01/2030 | 1015000 | &nbsp;&nbsp;&nbsp;&nbsp; **1071843** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., 5.25%, 8/01/2031 | 1070000 | &nbsp;&nbsp;&nbsp;&nbsp; **1137968** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., "A", 5%, 8/01/2026 | &nbsp;&nbsp;&nbsp;485000 | &nbsp;&nbsp;&nbsp; **491478** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., "A", 5%, 8/01/2027 | &nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp; **459406** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., "A", 5%, 8/01/2028 | &nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp; **540465** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., "A", 5%, 8/01/2029 | &nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **362610** |
| Galveston, TX, Wharves and Terminal, First Lien Rev., "A", 5%, 8/01/2030 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **520944** |
| Harris County, TX, Morton Road Municipal Utility District, BAM, 3%, 9/01/2025 | &nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp; **264009** |
| Harris County, TX, Municipal Utility District No. 287, "A", AGM, 2%, 3/01/2026 | &nbsp;&nbsp;&nbsp;530000 | &nbsp;&nbsp;&nbsp; **519541** |
| Houston, TX, Airport System Rev., Subordinate Lien, "C", 5%, 7/01/2025 | 1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1001744** |
| Houston, TX, Airport System Rev., Subordinate Lien, "C", 5%, 7/01/2026 | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3052959** |
| Houston, TX, Airport System Special Facilities Refunding Rev. (United Airlines, Inc. Terminal E Project), "A", 5%, 7/01/2027 | &nbsp;&nbsp;&nbsp;355000 | &nbsp;&nbsp;&nbsp; **356558** |
| Houston, TX, Airport System Special Facilities Rev. (United Airlines, Inc. Terminal Improvement Projects), "B", 5.5%, 7/15/2035 | 7120000 | &nbsp;&nbsp;&nbsp;&nbsp; **7266772** |
| Houston, TX, Airport System Special Facilities Rev. (United Airlines, Inc. Terminal Improvement Projects), "B", 5.5%, 7/15/2038 | &nbsp;&nbsp;&nbsp;665000 | &nbsp;&nbsp;&nbsp; **672408** |
| Houston, TX, Airport System Special Facilities Rev. (United Airlines, Inc. Terminal Improvement Projects), "B-2", 5%, 7/15/2027 | &nbsp;&nbsp;&nbsp;490000 | &nbsp;&nbsp;&nbsp; **492176** |
| Houston, TX, Convention & Entertainment Facilities Department, Hotel Occupancy Rev., 4%, 9/01/2025 | &nbsp;&nbsp;&nbsp;230000 | &nbsp;&nbsp;&nbsp; **230454** |
| Houston, TX, Housing Finance Corp., Multi-Family Housing Rev. (Cordova Apartments), 3.65%, 2/01/2048 (Put Date 2/01/2028) | 3700000 | &nbsp;&nbsp;&nbsp;&nbsp; **3703284** |
| Houston, TX, Memorial City Redevelopment Authority Rev., AGM, 5%, 9/01/2026 | 1100000 | &nbsp;&nbsp;&nbsp;&nbsp; **1120510** |
| Irving, TX, Hospital Authority Rev. (Baylor Scott & White Medical Center-Irving), "A", 5%, 10/15/2025 | &nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **502083** |
| Irving, TX, Hospital Authority Rev. (Baylor Scott & White Medical Center-Irving), "A", 5%, 10/15/2028 | &nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **354430** |
| Irving, TX, Hotel Occupancy Tax Rev., 5%, 8/15/2025 | &nbsp;&nbsp;&nbsp;130000 | &nbsp;&nbsp;&nbsp; **130070** |
| Irving, TX, Hotel Occupancy Tax Rev., 5%, 8/15/2026 | &nbsp;&nbsp;&nbsp;150000 | &nbsp;&nbsp;&nbsp; **151102** |
| Irving, TX, Hotel Occupancy Tax Rev., 5%, 8/15/2028 | &nbsp;&nbsp;&nbsp;225000 | &nbsp;&nbsp;&nbsp; **228773** |
| Irving, TX, Hotel Occupancy Tax Rev., 5%, 8/15/2029 | &nbsp;&nbsp;&nbsp;275000 | &nbsp;&nbsp;&nbsp; **280366** |
| Irving, TX, Hotel Occupancy Tax Rev., 5%, 8/15/2030 | &nbsp;&nbsp;&nbsp;185000 | &nbsp;&nbsp;&nbsp; **188371** |
| Matagorda County, TX, Navigation District No. 1, Pollution Control Rev. (Central Power & Light Co.), 4.25%, 5/01/2030 | 6875000 | &nbsp;&nbsp;&nbsp;&nbsp; **6905786** |
| Matagorda County, TX, Navigation District No. 1, Pollution Control Rev. (Central Power & Light Co.), "A", 2.6%, 11/01/2029 | 3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2808558** |
| Mission, TX, Economic Development Corp., Solid Waste Disposal Rev. (Republic Services, Inc. Project), 4%, 6/01/2054 (Put Date 6/01/2034) | 5455000 | &nbsp;&nbsp;&nbsp;&nbsp; **5288689** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Bella Vida Forefront Living Project), "B-3", 4.25%, 10/01/2030 | 2230000 | &nbsp;&nbsp;&nbsp;&nbsp; **2204263** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2025 | &nbsp;&nbsp;&nbsp;390000 | &nbsp;&nbsp;&nbsp; **391887** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2026 | &nbsp;&nbsp;&nbsp;285000 | &nbsp;&nbsp;&nbsp; **289671** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2027 | &nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **359332** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2028 | &nbsp;&nbsp;&nbsp;440000 | &nbsp;&nbsp;&nbsp; **455793** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2029 | &nbsp;&nbsp;&nbsp;575000 | &nbsp;&nbsp;&nbsp; **600173** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2030 | &nbsp;&nbsp;&nbsp;805000 | &nbsp;&nbsp;&nbsp; **845757** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2031 | &nbsp;&nbsp;&nbsp;635000 | &nbsp;&nbsp;&nbsp; **671517** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2032 | &nbsp;&nbsp;&nbsp;665000 | &nbsp;&nbsp;&nbsp; **705346** |
| New Hope, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Westminster Project), 5%, 11/01/2033 | &nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp; **743416** |
| North Texas Higher Education Authority, Inc., Tax-Exempt Education Loan Rev., "1A", 5%, 6/01/2028 | &nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp; **567076** |
| North Texas Higher Education Authority, Inc., Tax-Exempt Education Loan Rev., "1A", 5%, 6/01/2030 | 1650000 | &nbsp;&nbsp;&nbsp;&nbsp; **1709589** |
| North Texas Higher Education Authority, Inc., Tax-Exempt Education Loan Rev., "1A", 5%, 6/01/2031 | 1900000 | &nbsp;&nbsp;&nbsp;&nbsp; **1972470** |
| Port Beaumont, TX, Navigation District, Dock & Wharf Facility Rev. (Jefferson Gulf Coast Energy Project), "A", 1.875%, 1/01/2026 (n) | &nbsp;&nbsp;&nbsp;850000 | &nbsp;&nbsp;&nbsp; **835518** |
| Public Facility Corp., Texas Multi-Family Housing Rev. (Lakeside Manor Apartments), 3.25%, 3/01/2040 (Put Date 9/01/2025) | 5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4991750** |
| San Antonio, TX, Airport System Rev., "A", 5%, 7/01/2025 | 1015000 | &nbsp;&nbsp;&nbsp;&nbsp; **1017044** |
| San Antonio, TX, Airport System Rev., "A", 5%, 7/01/2026 | 1690000 | &nbsp;&nbsp;&nbsp;&nbsp; **1718863** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Texas – continued | Texas – continued | Texas – continued |
| San Antonio, TX, Airport System Rev., "A", 5%, 7/01/2027 | $&nbsp;&nbsp;1870000 | &nbsp;&nbsp;$1928122 |
| San Antonio, TX, Airport System Rev., "A", 5%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;565000 | &nbsp;&nbsp;&nbsp; **587058** |
| San Antonio, TX, Passenger Facility Charge and Subordinate Lien Airport System Rev., "A", 5%, 7/01/2025 | &nbsp;&nbsp;1600000 | &nbsp;&nbsp;&nbsp;&nbsp; **1603223** |
| San Antonio, TX, Passenger Facility Charge and Subordinate Lien Airport System Rev., "A", 5%, 7/01/2026 | &nbsp;&nbsp;1250000 | &nbsp;&nbsp;&nbsp;&nbsp; **1271348** |
| San Antonio, TX, Passenger Facility Charge and Subordinate Lien Airport System Rev., "A", 5%, 7/01/2027 | &nbsp;&nbsp;2750000 | &nbsp;&nbsp;&nbsp;&nbsp; **2821006** |
| Tarrant County, TX, Cultural Education Facilities Finance Corp. (Christus Health), "A", 5%, 7/01/2053 (Put Date 7/01/2032) | &nbsp;&nbsp;3895000 | &nbsp;&nbsp;&nbsp;&nbsp; **4156395** |
| Tarrant County, TX, Cultural Education Facilities Finance Corp., Hospital Rev. (Baylor Scott & White Health Project), "F", 5%, 11/15/2052 (Put Date 11/15/2030) | &nbsp;&nbsp;4750000 | &nbsp;&nbsp;&nbsp;&nbsp; **5051018** |
| Tarrant County, TX, Cultural Education Facilities Finance Corp., Retirement Facility Rev. (Barton Creek Senior Living Center, Inc., Querencia Project), 5%, 11/15/2025 | &nbsp;&nbsp;1675000 | &nbsp;&nbsp;&nbsp;&nbsp; **1673121** |
| Tarrant County, TX, Housing Finance Corporation, Multi-Family Housing Rev. (Wildwood Branch), 3.6%, 2/01/2043 (Put Date 2/01/2028) | &nbsp;&nbsp;7000000 | &nbsp;&nbsp;&nbsp;&nbsp; **7009439** |
| Temple, TX, Reinvestment Zone 1 Rev., "A", BAM, 5%, 8/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;140000 | &nbsp;&nbsp;&nbsp; **140532** |
| Texas Affordable Housing Corp., Multi-Family Rev. (Eden Court Apartments Project), Texas PSF, 5%, 4/01/2043 (Put Date 4/01/2026) | &nbsp;&nbsp;2100000 | &nbsp;&nbsp;&nbsp;&nbsp; **2110839** |
| Texas Department of Housing & Community Affairs, Multi-Family Housing Rev. (Aspen Park), 5%, 3/01/2041 (Put Date 3/01/2026) | &nbsp;&nbsp;4000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4015114** |
| Texas Municipal Gas Acquisition & Supply Corp. II, Gas Supply Rev., "C", FLR, 3.7% (SOFR - 3mo. + 0.86%), 9/15/2027 | &nbsp;&nbsp;3190000 | &nbsp;&nbsp;&nbsp;&nbsp; **3190008** |
| Texas Municipal Gas Acquisition & Supply Corp. III, Gas Supply Rev., 5%, 12/15/2031 | &nbsp;&nbsp;9885000 | &nbsp;&nbsp;&nbsp;&nbsp; **10320726** |
| Texas Municipal Gas Acquisition & Supply Corp. IV, Gas Supply Rev., "B", 5.5%, 1/01/2054 (Put Date 1/01/2034) | 11345000 | &nbsp;&nbsp;&nbsp;&nbsp; **12179057** |
| Texas Municipal Gas Acquisition & Supply Corp. V, Gas Supply Rev., 5%, 1/01/2055 (Put Date 1/01/2034) | &nbsp;&nbsp;6000000 | &nbsp;&nbsp;&nbsp;&nbsp; **6237208** |
| Texas Public Finance Authority Rev. (Texas Southern University), "A", BAM, 5%, 5/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;395000 | &nbsp;&nbsp;&nbsp; **399076** |
| Texas Public Finance Authority, Financing System Refunding Rev. (Texas Southern University), BAM, 5%, 5/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **500000** |
| Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, "A", 0%, 8/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;135000 | &nbsp;&nbsp;&nbsp; **118959** |
| Texas Transportation Commission, State Highway 249 System Rev., Capital Appreciation, "A", 0%, 8/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **422447** |
| Travis County, TX, Housing Finance Corp., Multi-Family Housing Rev. (Airport Gateway Apartments), 4.125%, 6/01/2045 (Put Date 6/01/2027) | &nbsp;&nbsp;4665000 | &nbsp;&nbsp;&nbsp;&nbsp; **4680994** |
| Viridian, TX, Municipal Management District, Road Improvement Rev., AGM, 3%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;590000 | &nbsp;&nbsp;&nbsp; **586112** |
|  |  | &nbsp;&nbsp; **$217216232** |
| U.S. Virgin Islands – 0.1% | U.S. Virgin Islands – 0.1% | U.S. Virgin Islands – 0.1% |
| Matching Fund Special Purpose Securitization Corp., "A", 5%, 10/01/2025 | $&nbsp;&nbsp;2670000 | &nbsp;&nbsp;$2679956 |
| Utah – 0.7% | Utah – 0.7% | Utah – 0.7% |
| Salt Lake City, UT, Airport Rev. (Salt Lake City International Airport), "A", 5%, 7/01/2025 | $&nbsp;&nbsp;1990000 | &nbsp;&nbsp;$1993807 |
| Salt Lake City, UT, Airport Rev. (Salt Lake City International Airport), "A", 5%, 7/01/2026 | &nbsp;&nbsp;1200000 | &nbsp;&nbsp;&nbsp;&nbsp; **1219392** |
| Salt Lake City, UT, Airport Rev. (Salt Lake City International Airport), "A", 5%, 7/01/2028 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5195207** |
| Utah Housing Corp., Multi-Family Housing Rev. (Silos on 500), 3.7%, 8/01/2043 (Put Date 8/01/2027) | &nbsp;&nbsp;2000000 | &nbsp;&nbsp;&nbsp;&nbsp; **2005646** |
| Utah Housing Corp., Single Family Mortgage Rev., "A", GNMA, 6.5%, 1/01/2054 | &nbsp;&nbsp;1810000 | &nbsp;&nbsp;&nbsp;&nbsp; **1964227** |
| Utah Housing Corp., Single Family Mortgage Rev., "C", GNMA, 6.5%, 7/01/2055 | &nbsp;&nbsp;6510000 | &nbsp;&nbsp;&nbsp;&nbsp; **7321729** |
|  |  | &nbsp;&nbsp; **$19700008** |
| Vermont – 0.9% | Vermont – 0.9% | Vermont – 0.9% |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;360000 | &nbsp;&nbsp;$360406 |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2026 | &nbsp;&nbsp;1470000 | &nbsp;&nbsp;&nbsp;&nbsp; **1488885** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;775000 | &nbsp;&nbsp;&nbsp; **784956** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2026 | &nbsp;&nbsp;&nbsp;&nbsp;140000 | &nbsp;&nbsp;&nbsp; **141799** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;775000 | &nbsp;&nbsp;&nbsp; **783257** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2027 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1018337** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2027 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1018337** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;425000 | &nbsp;&nbsp;&nbsp; **432793** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2028 | &nbsp;&nbsp;1600000 | &nbsp;&nbsp;&nbsp;&nbsp; **1636480** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2028 | &nbsp;&nbsp;1735000 | &nbsp;&nbsp;&nbsp;&nbsp; **1774558** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp; **536970** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2029 | &nbsp;&nbsp;1640000 | &nbsp;&nbsp;&nbsp;&nbsp; **1670766** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Vermont – continued | Vermont – continued | Vermont – continued |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2029 | $&nbsp;&nbsp;1450000 | &nbsp;&nbsp;$1477201 |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2030 | &nbsp;&nbsp;1000000 | &nbsp;&nbsp;&nbsp;&nbsp; **1019215** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2025 | &nbsp;&nbsp;&nbsp;&nbsp;875000 | &nbsp;&nbsp;&nbsp;&nbsp; **875661** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2026 | &nbsp;&nbsp;2100000 | &nbsp;&nbsp;&nbsp;&nbsp; **2126978** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2029 | &nbsp;&nbsp;1300000 | &nbsp;&nbsp;&nbsp;&nbsp; **1331265** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5.25%, 6/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp;&nbsp; **469510** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2030 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1540536** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5.25%, 6/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;690000 | &nbsp;&nbsp;&nbsp;&nbsp; **723246** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5%, 6/15/2031 | &nbsp;&nbsp;1600000 | &nbsp;&nbsp;&nbsp;&nbsp; **1642928** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5.25%, 6/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **738012** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5.25%, 6/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp;&nbsp; **580951** |
| Vermont Student Assistance Corp., Education Loan Rev., "A", 5.25%, 6/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;700000 | &nbsp;&nbsp;&nbsp;&nbsp; **734968** |
|  |  | &nbsp;&nbsp; **$24908015** |
| Virginia – 2.0% | Virginia – 2.0% | Virginia – 2.0% |
| Arlington County, VA, Industrial Development Authority, Hospital Rev. (Virginia Hospital Center), 5%, 7/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;475000 | &nbsp;&nbsp;$475949 |
| Charles City County, VA, Industrial Development Authority, Solid Waste Disposal Rev. (Waste Management, Inc. Project), 1.45%, 4/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;235000 | &nbsp;&nbsp;&nbsp;&nbsp; **221631** |
| Chesapeake, VA, Economic Development Authority, Pollution Control Rev. (Virginia Electric and Power Company Project), "A", 3.65%, 2/01/2032 (Put Date 10/01/2027) | &nbsp;&nbsp;3215000 | &nbsp;&nbsp;&nbsp;&nbsp; **3232733** |
| Fairfax County, VA, Redevelopment & Housing Authority, Multi-Family Housing Rev. (One University Senior Apartments), 4%, 12/01/2025 (Put Date 6/01/2025) | 14480000 | &nbsp;&nbsp;&nbsp;&nbsp; **14471787** |
| Louisa, VA, Industrial Development Authority, Pollution Control Refunding Rev. (Virginia Electric and Power Co. Project), "A", 3.65%, 11/01/2035 (Put Date 10/01/2027) | &nbsp;&nbsp;&nbsp;&nbsp;915000 | &nbsp;&nbsp;&nbsp;&nbsp; **920047** |
| Louisa, VA, Industrial Development Authority, Pollution Control Refunding Rev. (Virginia Electric and Power Co. Project), "B", 0.75%, 11/01/2035 (Put Date 9/02/2025) | &nbsp;&nbsp;2340000 | &nbsp;&nbsp;&nbsp;&nbsp; **2304953** |
| Virginia Beach, VA, Development Authority, Residential Care Facility Refunding Rev. (Westminster - Canterbury on Chesapeake Bay), 5%, 9/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;95000 | &nbsp;&nbsp;&nbsp; **96521** |
| Virginia Beach, VA, Development Authority, Residential Care Facility Rev. (Westminster - Canterbury on Chesapeake Bay), "B-3", 5.375%, 9/01/2029 | 10250000 | &nbsp;&nbsp;&nbsp;&nbsp; **10315895** |
| Virginia College Building Authority, Educational Facilities Rev. (Regent University Project), 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp;&nbsp; **349987** |
| Virginia College Building Authority, Educational Facilities Rev. (Regent University Project), 5%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp;&nbsp; **403939** |
| Virginia Housing Development Authority, Rental Housing, "A", 3.25%, 3/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;525000 | &nbsp;&nbsp;&nbsp;&nbsp; **514821** |
| Virginia Housing Development Authority, Rental Housing, "A", 3.25%, 9/01/2029 | &nbsp;&nbsp;1750000 | &nbsp;&nbsp;&nbsp;&nbsp; **1711213** |
| Virginia Housing Development Authority, Rental Housing, "A", 3.65%, 3/01/2029 | &nbsp;&nbsp;7420000 | &nbsp;&nbsp;&nbsp;&nbsp; **7311235** |
| Wise County, VA, Industrial Development Authority, Solid Waste & Sewage Disposal Rev. (Virginia Electric and Power Co. Project), "A", 0.75%, 10/01/2040 (Put Date 9/02/2025) | &nbsp;&nbsp;2700000 | &nbsp;&nbsp;&nbsp;&nbsp; **2659561** |
| York, VA, Economic Development Authority, Pollution Control Rev. (Virginia Electric and Power Company Project), "A", 3.65%, 5/01/2033 (Put Date 10/01/2027) | &nbsp;&nbsp;6390000 | &nbsp;&nbsp;&nbsp;&nbsp; **6425245** |
|  |  | &nbsp;&nbsp; **$51415517** |
| Washington – 2.2% | Washington – 2.2% | Washington – 2.2% |
| Grays Harbor County, WA, Public Hospital District No. 2, Limited Tax General Obligation, 4%, 12/15/2028 | $&nbsp;&nbsp;3275000 | &nbsp;&nbsp;$3217133 |
| King County, WA, Affordable Housing Rev., "A-1", HUD Section 8, 5%, 1/01/2028 | &nbsp;&nbsp;5850000 | &nbsp;&nbsp;&nbsp;&nbsp; **5902892** |
| King County, WA, Affordable Housing Rev., "A-2", HUD Section 8, 5%, 1/01/2028 | &nbsp;&nbsp;2860000 | &nbsp;&nbsp;&nbsp;&nbsp; **2924646** |
| Klickitat County, WA, Electric System Rev. (Washington Public Utility District No. 1), AGM, 5%, 12/01/2032 | &nbsp;&nbsp;1500000 | &nbsp;&nbsp;&nbsp;&nbsp; **1641884** |
| Klickitat County, WA, Electric System Rev. (Washington Public Utility District No. 1), AGM, 5%, 12/01/2033 | &nbsp;&nbsp;1350000 | &nbsp;&nbsp;&nbsp;&nbsp; **1479231** |
| Port of Seattle, WA, Intermediate Lien Refunding Rev. (Private Activity), "B", 5%, 8/01/2025 | &nbsp;&nbsp;3800000 | &nbsp;&nbsp;&nbsp;&nbsp; **3811857** |
| Port of Seattle, WA, Intermediate Lien Refunding Rev. (Private Activity), "B", 5%, 8/01/2026 | &nbsp;&nbsp;2230000 | &nbsp;&nbsp;&nbsp;&nbsp; **2272366** |
| Seattle, WA, Housing Authority Rev. (Northgate Plaza Project), 1%, 6/01/2026 | &nbsp;&nbsp;3070000 | &nbsp;&nbsp;&nbsp;&nbsp; **2959333** |
| Seattle, WA, Port Rev., 5%, 4/01/2026 | &nbsp;&nbsp;3000000 | &nbsp;&nbsp;&nbsp;&nbsp; **3041114** |
| Seattle, WA, Port Rev., 5%, 4/01/2030 | &nbsp;&nbsp;9685000 | &nbsp;&nbsp;&nbsp;&nbsp; **10085391** |
| Seattle, WA, Port Rev., 5%, 4/01/2031 | &nbsp;&nbsp;3500000 | &nbsp;&nbsp;&nbsp;&nbsp; **3640693** |
| Vancouver, WA, Housing Authority Rev. (Navalia and Alena Projects), 4%, 8/01/2034 | 12065000 | &nbsp;&nbsp;&nbsp;&nbsp; **11790638** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Washington – continued | Washington – continued | Washington – continued |
| Washington Higher Education Facilities Authority Refunding Rev. (Gonzaga University Project), 4%, 4/01/2041 | $&nbsp;&nbsp;5000000 | &nbsp;&nbsp;$4652087 |
| Washington State Housing Finance Commission, Multi-Family Rev. (Mill at First Hill Apartments Project), FNMA, 4.15%, 7/01/2034 | &nbsp;&nbsp;1470000 | &nbsp;&nbsp;&nbsp;&nbsp; **1461260** |
|  |  | &nbsp;&nbsp; **$58880525** |
| West Virginia – 0.8% | West Virginia – 0.8% | West Virginia – 0.8% |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;795000 | &nbsp;&nbsp;$795274 |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;405000 | &nbsp;&nbsp;&nbsp; **409013** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;505000 | &nbsp;&nbsp;&nbsp; **513436** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;530000 | &nbsp;&nbsp;&nbsp; **541556** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;360000 | &nbsp;&nbsp;&nbsp; **369331** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;350000 | &nbsp;&nbsp;&nbsp; **361076** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;725000 | &nbsp;&nbsp;&nbsp; **749258** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp; **413323** |
| Ohio County, WV, County Commission Tax increment Rev. (Highlands Project), 5%, 6/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;400000 | &nbsp;&nbsp;&nbsp; **412009** |
| West Virginia Economic Development Authority, Lease Refunding Rev. (State Office Building), "B", 3.625%, 10/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;415000 | &nbsp;&nbsp;&nbsp; **415046** |
| West Virginia Economic Development Authority, Lease Rev. (Department of Environmental Protection Office Building), "B", 3.375%, 11/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;830000 | &nbsp;&nbsp;&nbsp; **829929** |
| West Virginia Economic Development Authority, Solid Waste Disposal Facilities Refunding Rev. (Wheeling Power Co. - Mitchell Project), "A", 3%, 6/01/2037 (Put Date 6/18/2027) | &nbsp;&nbsp;7535000 | &nbsp;&nbsp;&nbsp;&nbsp; **7374969** |
| West Virginia Economic Development Authority, Solid Waste Disposal Facilities Rev. (Appalachian Power Company - Amos Project), "A", 0.625%, 12/01/2038 (Put Date 12/15/2025) | &nbsp;&nbsp;1915000 | &nbsp;&nbsp;&nbsp;&nbsp; **1873263** |
| West Virginia Economic Development Authority, Solid Waste Disposal Facilities Rev. (Appalachian Power Company - Amos Project), "A", 1%, 1/01/2041 (Put Date 9/01/2025) | &nbsp;&nbsp;4520000 | &nbsp;&nbsp;&nbsp;&nbsp; **4460427** |
| West Virginia Economic Development Authority, Solid Waste Disposal Facilities Rev. (Appalachian Power Company - Amos Project), "A", 3.75%, 12/01/2042 (Put Date 6/01/2025) | &nbsp;&nbsp;&nbsp;&nbsp;985000 | &nbsp;&nbsp;&nbsp; **984748** |
|  |  | &nbsp;&nbsp; **$20502658** |
| Wisconsin – 2.2% | Wisconsin – 2.2% | Wisconsin – 2.2% |
| Deerfield, WI, Community School District, Bond Anticipation Notes, 4%, 3/01/2030 | $14500000 | &nbsp;&nbsp;$14646884 |
| Jefferson and Dodge Counties, WI, Watertown General Obligation Anticipation Notes, 4%, 10/01/2025 | &nbsp;&nbsp;1150000 | &nbsp;&nbsp;&nbsp;&nbsp; **1150011** |
| Wisconsin Center District Junior Dedicated Tax Rev., Capital Appreciation, "D", AGM, 0%, 12/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;265000 | &nbsp;&nbsp;&nbsp; **230380** |
| Wisconsin Center District Junior Dedicated Tax Rev., Capital Appreciation, "D", AGM, 0%, 12/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;365000 | &nbsp;&nbsp;&nbsp; **304345** |
| Wisconsin Center District Junior Dedicated Tax Rev., Capital Appreciation, "D", AGM, 0%, 12/15/2030 | &nbsp;&nbsp;&nbsp;&nbsp;550000 | &nbsp;&nbsp;&nbsp; **439436** |
| Wisconsin Center District Senior Dedicated Tax Rev., Capital Appreciation, "C", AGM, 0%, 12/15/2028 | &nbsp;&nbsp;1055000 | &nbsp;&nbsp;&nbsp; **917172** |
| Wisconsin Center District Senior Dedicated Tax Rev., Capital Appreciation, "C", AGM, 0%, 12/15/2029 | &nbsp;&nbsp;1050000 | &nbsp;&nbsp;&nbsp; **875514** |
| Wisconsin Center District Senior Dedicated Tax Rev., Capital Appreciation, "C", AGM, 0%, 12/15/2030 | &nbsp;&nbsp;1095000 | &nbsp;&nbsp;&nbsp; **874876** |
| Wisconsin Health & Educational Facilities Authority Refunding Rev. (Froedtert Health, Inc. Obligated Group), "A", 4%, 4/01/2040 | &nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4720800** |
| Wisconsin Health & Educational Facilities Authority Rev. (Marshfield Clinic Health System, Inc.), "B-2", 5%, 2/15/2051 (Put Date 2/15/2027) | &nbsp;&nbsp;4000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4058502** |
| Wisconsin Health & Educational Facilities Authority Rev. (Milwaukee Science Education Consortium, Inc.), "A", 4.5%, 3/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;505000 | &nbsp;&nbsp;&nbsp; **507577** |
| Wisconsin Health & Educational Facilities Authority Rev. (Oakwood Lutheran Senior Ministries), 4%, 1/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;345000 | &nbsp;&nbsp;&nbsp; **343527** |
| Wisconsin Health & Educational Facilities Authority Rev. (Oakwood Lutheran Senior Ministries), 4%, 1/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;360000 | &nbsp;&nbsp;&nbsp; **357157** |
| Wisconsin Health & Educational Facilities Authority Rev. (Oakwood Lutheran Senior Ministries), 4%, 1/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;375000 | &nbsp;&nbsp;&nbsp; **370269** |
| Wisconsin Health & Educational Facilities Authority Rev. (Oakwood Lutheran Senior Ministries), 4%, 1/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;390000 | &nbsp;&nbsp;&nbsp; **383487** |
| Wisconsin Health & Educational Facilities Authority Rev. (ProHealth Care, Inc. Obligated Group), 3%, 8/15/2026 | &nbsp;&nbsp;4340000 | &nbsp;&nbsp;&nbsp;&nbsp; **4298172** |
| Wisconsin Housing & Economic Development Authority Housing Rev., "E", HUD Section 8, 3.875%, 11/01/2054 (Put Date 5/01/2027) | &nbsp;&nbsp;2040000 | &nbsp;&nbsp;&nbsp;&nbsp; **2043807** |
| Wisconsin Housing & Economic Development Authority, Multi-Family Housing (Intersect Project), "I", 5%, 11/01/2058 (Put Date 2/01/2027) | &nbsp;&nbsp;3250000 | &nbsp;&nbsp;&nbsp;&nbsp; **3336751** |
| Wisconsin Public Finance Authority Education Rev. (Triad Educational Services, Inc.), 4.25%, 6/15/2027 | &nbsp;&nbsp;&nbsp;&nbsp;500000 | &nbsp;&nbsp;&nbsp; **500352** |
| Wisconsin Public Finance Authority Hospital Rev. (Renown Regional Medical Center Project), "A", 5%, 6/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;425000 | &nbsp;&nbsp;&nbsp; **425262** |
| Wisconsin Public Finance Authority Hospital Rev. (Renown Regional Medical Center Project), "A", 5%, 6/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;&nbsp; **329096** |
| Wisconsin Public Finance Authority Hospital Rev. (Renown Regional Medical Center Project), "A", 5%, 6/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;450000 | &nbsp;&nbsp;&nbsp; **462216** |
| Wisconsin Public Finance Authority Hospital Rev. (Renown Regional Medical Center Project), "A", 5%, 6/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;725000 | &nbsp;&nbsp;&nbsp; **752673** |

---

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Municipal Bonds – continued | Municipal Bonds – continued | Municipal Bonds – continued |
| Wisconsin – continued | Wisconsin – continued | Wisconsin – continued |
| Wisconsin Public Finance Authority Hospital Rev. (Renown Regional Medical Center Project), "A", 5%, 6/01/2029 | $&nbsp;&nbsp;&nbsp;&nbsp;900000 | &nbsp;&nbsp;$944248 |
| Wisconsin Public Finance Authority Retirement Facilities First Mortgage Rev. (United Methodist Retirement Homes), "A", 4%, 10/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;200000 | &nbsp;&nbsp;&nbsp;&nbsp; **198889** |
| Wisconsin Public Finance Authority Retirement Facilities First Mortgage Rev. (United Methodist Retirement Homes), "A", 4%, 10/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;255000 | &nbsp;&nbsp;&nbsp;&nbsp; **253022** |
| Wisconsin Public Finance Authority Retirement Facilities First Mortgage Rev. (United Methodist Retirement Homes), "A", 4%, 10/01/2029 | &nbsp;&nbsp;&nbsp;&nbsp;325000 | &nbsp;&nbsp;&nbsp;&nbsp; **321334** |
| Wisconsin Public Finance Authority Rev. (Roseman University of Health Sciences Project), 5.875%, 4/01/2045 | &nbsp;&nbsp;2315000 | &nbsp;&nbsp;&nbsp;&nbsp; **2315785** |
| Wisconsin Public Finance Authority, Airport Facilities Rev. (Transportation Infrastructure Properties LLC), "B", 5.25%, 7/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;725000 | &nbsp;&nbsp;&nbsp;&nbsp; **725347** |
| Wisconsin Public Finance Authority, Limited Obligation Grant Rev. (American Dream at Meadowlands Project), "A", 6.25%, 8/01/2027 (a)(d)(n) | &nbsp;&nbsp;3735000 | &nbsp;&nbsp;&nbsp;&nbsp; **3613613** |
| Wisconsin Public Finance Authority, Multi-Family Affordable Housing Certificates, "1-A", FHLMC, 4.1%, 9/25/2039 (n) | &nbsp;&nbsp;7970000 | &nbsp;&nbsp;&nbsp;&nbsp; **7526654** |
|  |  | &nbsp;&nbsp; **$58227158** |
| Wyoming – 0.0% | Wyoming – 0.0% | Wyoming – 0.0% |
| Wyoming Community Development Authority, Housing Rev., "3", 5%, 6/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;695000 | &nbsp;&nbsp;$695566 |
| Wyoming Community Development Authority, Housing Rev., "3", 5%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;380000 | &nbsp;&nbsp;&nbsp;&nbsp; **382806** |
|  |  | &nbsp;&nbsp; **$1078372** |
| **Total Municipal Bonds (Identified Cost, $2,583,816,226)** |  | &nbsp;&nbsp;**$2563024216** |
| Bonds – 0.3% | Bonds – 0.3% | Bonds – 0.3% |
| Transportation - Services – 0.3% | Transportation - Services – 0.3% |  |
| Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2026 (n) | $&nbsp;&nbsp;7427000 | &nbsp;&nbsp;$7069768 |
| Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2028 (n) | &nbsp;&nbsp;1573000 | &nbsp;&nbsp;&nbsp;&nbsp; **1328710** |
| **Total Bonds (Identified Cost, $8,487,788)** |  | &nbsp;&nbsp; **$8398478** |
| Other Municipal Bonds – 0.2% | Other Municipal Bonds – 0.2% | Other Municipal Bonds – 0.2% |
| Multi-Family Housing Revenue – 0.2% | Multi-Family Housing Revenue – 0.2% |  |
| Freddie Mac, 4.615%, 8/25/2041 (Identified Cost, $5,771,237) | $&nbsp;&nbsp;5726344 | &nbsp;&nbsp;$5918394 |
| Mutual Funds (h) – 1.7% | Mutual Funds (h) – 1.7% | Mutual Funds (h) – 1.7% |
| Money Market Funds – 1.7% | Money Market Funds – 1.7% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) (Identified Cost, $43,474,977) | 43474178 | &nbsp;&nbsp;$43474178 |
| Other Assets, Less Liabilities – 0.6% |  | &nbsp;&nbsp;&nbsp;&nbsp; **15089652** |
| **Net Assets – 100.0%** |  | &nbsp;&nbsp;**$2635904918** |

---

(a) Non-income producing security.

(d) In default.

(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 $43,474,178 and $2,577,341,088, respectively.

(n) Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to
qualified institutional buyers. At period end, the aggregate value of these securities was $39,592,932, representing 1.5% of net assets.

(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period
end.

(w) When-issued security.

The following abbreviations are used in this report and are defined: <br> AAC Ambac Assurance Corp. <br> AGM Assured Guaranty Municipal

------

MFS Municipal Limited Maturity Fund

Portfolio of Investments – continued

---

| | |
|:---|:---|
| BAM | &nbsp;&nbsp;Build America Mutual |
| COP | &nbsp;&nbsp;Certificate of Participation |
| ETM | &nbsp;&nbsp;Escrowed to Maturity |
| FHA | &nbsp;&nbsp;Federal Housing Administration |
| FHLMC | &nbsp;&nbsp;Federal Home Loan Mortgage Corp. |
| FLR | &nbsp;&nbsp;Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate. All reference rates are USD unless otherwise noted. |
| FNMA | &nbsp;&nbsp;Federal National Mortgage Assn. |
| GNMA | &nbsp;&nbsp;Government National Mortgage Assn. |
| NPFG | &nbsp;&nbsp;National Public Finance Guarantee Corp. |
| PSF | &nbsp;&nbsp;Permanent School Fund |
| SOFR | &nbsp;&nbsp;Secured Overnight Financing Rate |
| VRDN | &nbsp;&nbsp;Variable rate demand note that may be puttable to the issuer at the option of the holder. The stated interest rate, which generally resets either daily or weekly, represents the rate in effect at period end and may not be the current rate. |

---

#### See Notes to Financial Statements

------

MFS Municipal Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Assets and Liabilities** |

---

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

---

| | |
|:---|:---|
| **At 4/30/25 <br>Assets** |  |
| Investments in unaffiliated issuers, at value (identified cost, $2,598,075,251) | &nbsp;&nbsp;$2577341088 |
| Investments in affiliated issuers, at value (identified cost, $43,474,977) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43474178 |
| Receivables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2690700 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7527236 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest and dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32423734 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3998 |
| Total assets | &nbsp;&nbsp;$2663460934 |
| **Liabilities** |  |
| Payables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$693087 |
| &nbsp;&nbsp;&nbsp;&nbsp;When-issued investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22728178 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3413120 |
| Payable to affiliates |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1383 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1876 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;512962 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9941 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;837 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;194632 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$27556016 |
| Net assets | &nbsp;&nbsp;$2635904918 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp;$2770485294 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;(134580376) |
| Net assets | &nbsp;&nbsp;$2635904918 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;333285225 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Net assets** | &nbsp;&nbsp;&nbsp;&nbsp;**Shares<br> outstanding** | &nbsp;&nbsp;&nbsp;&nbsp;**Net asset value<br> per share (a)** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;$1124732019 | &nbsp;&nbsp;&nbsp;&nbsp;142108314 | &nbsp;&nbsp;&nbsp;&nbsp;$7.91 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56450 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7140 | &nbsp;&nbsp;&nbsp;&nbsp;7.91 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13584536 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1715812 | &nbsp;&nbsp;&nbsp;&nbsp;7.92 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;926883927 | &nbsp;&nbsp;&nbsp;&nbsp;117245763 | &nbsp;&nbsp;&nbsp;&nbsp;7.91 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;570647986 | &nbsp;&nbsp;&nbsp;&nbsp;72208196 | &nbsp;&nbsp;&nbsp;&nbsp;7.90 |

---

(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 $8.11 [100 / 97.50 x $7.91]. 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. Redemption price per share was equal to the net asset value per share for Classes I and R6.

------

MFS Municipal Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Operations** |

---

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

---

| | |
|:---|:---|
| **Year ended 4/30/25 <br>Net investment income (loss)** |  |
| Income |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest | &nbsp;&nbsp;$90827200 |
| &nbsp;&nbsp;&nbsp;&nbsp;Dividends from affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;2876936 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;669 |
| Total investment income | &nbsp;&nbsp;$93704805 |
| Expenses |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Management fee | &nbsp;&nbsp;&nbsp;$9088369 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;2935732 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;1563830 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;375476 |
| &nbsp;&nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;46909 |
| &nbsp;&nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;300744 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;135523 |
| &nbsp;&nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;70424 |
| &nbsp;&nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12236 |
| &nbsp;&nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;268999 |
| Total expenses | &nbsp;&nbsp;$14798242 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fees paid indirectly | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4995) |
| &nbsp;&nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | &nbsp;&nbsp;&nbsp;&nbsp;(2013421) |
| Net expenses | &nbsp;&nbsp;$12779826 |
| Net investment income (loss) | &nbsp;&nbsp;$80924979 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;$(7280627) |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5680) |
| Net realized gain (loss) | &nbsp;&nbsp;$(7286307) |
| Change in unrealized appreciation or depreciation |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;$21163009 |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(800) |
| Net unrealized gain (loss) | &nbsp;&nbsp;$21162209 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;$13875902 |
| Change in net assets from operations | &nbsp;&nbsp;$94800881 |

---

------

MFS Municipal Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statements of Changes in Net Assets** |

---

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | |
|:---|:---|:---|
|  | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$80924979 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$72885186 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7286307) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(17568644) |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;21162209 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23280127 |
| Change in net assets from operations | &nbsp;&nbsp;&nbsp;&nbsp;$94800881 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$78596669 |
| Total distributions to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;$(80018002) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(71734787) |
| Change in net assets from fund share transactions | &nbsp;&nbsp;&nbsp;&nbsp;$19326363 | &nbsp;&nbsp;&nbsp;&nbsp;$(299611593) |
| Total change in net assets | &nbsp;&nbsp;&nbsp;&nbsp;$34109242 | &nbsp;&nbsp;&nbsp;&nbsp;$(292749711) |
| **Net assets** |  |  |
| At beginning of period | &nbsp;&nbsp;2601795676 | &nbsp;&nbsp;&nbsp;&nbsp;2894545387 |
| At end of period | $2635904918 | &nbsp;&nbsp;&nbsp;$2601795676 |

---

------

MFS Municipal Limited Maturity Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Financial Highlights** |

---

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class A** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.06 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.10 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.04 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.13 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.44) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.48 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.14) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.40 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.68 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.92 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.58 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.59 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.65 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.00 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.61 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.65 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 |
| Net assets at end of period (000 omitted) | $1124732 | &nbsp;&nbsp;&nbsp;$1114939 | &nbsp;&nbsp;&nbsp;$1210132 | &nbsp;&nbsp;&nbsp;$1351962 | &nbsp;&nbsp;&nbsp;$1382963 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class B** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $7.86 | &nbsp;&nbsp;&nbsp;&nbsp;$7.84 | &nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;$8.05 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.18 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 | &nbsp;&nbsp;&nbsp;&nbsp;$0.04 | &nbsp;&nbsp;&nbsp;&nbsp;$0.08 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.05 | &nbsp;&nbsp;&nbsp;&nbsp;0.02 | &nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;(0.54) | &nbsp;&nbsp;&nbsp;&nbsp;0.33 |
| Total from investment operations | $0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.16 | &nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;$(0.50) | &nbsp;&nbsp;&nbsp;&nbsp;$0.41 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.18) | &nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;$(0.04) | &nbsp;&nbsp;&nbsp;$(0.07) |
| Net asset value, end of period (x) | $7.91 | &nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;$7.84 | &nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;$8.39 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;2.89 | &nbsp;&nbsp;&nbsp;&nbsp;2.11 | &nbsp;&nbsp;&nbsp;&nbsp;0.92 | &nbsp;&nbsp;&nbsp;&nbsp;(5.96) | &nbsp;&nbsp;&nbsp;&nbsp;5.15 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;1.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.33 | &nbsp;&nbsp;&nbsp;&nbsp;1.34 | &nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;1.36 | &nbsp;&nbsp;&nbsp;&nbsp;1.40 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;2.25 | &nbsp;&nbsp;&nbsp;&nbsp;1.83 | &nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;0.50 | &nbsp;&nbsp;&nbsp;&nbsp;0.96 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;&nbsp;$56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$71 | &nbsp;&nbsp;&nbsp;&nbsp;$145 | &nbsp;&nbsp;&nbsp;&nbsp;$167 | &nbsp;&nbsp;&nbsp;&nbsp;$188 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Municipal Limited Maturity Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class C** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$7.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.06 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.17 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.07 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.06 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.52) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.42 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.03) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.07) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$7.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.87 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.41 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;2.79 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6.16) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.16 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;2.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.93 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.84 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 |
| Net assets at end of period (000 omitted) | $13585 | &nbsp;&nbsp;&nbsp;$19082 | &nbsp;&nbsp;&nbsp;$28050 | &nbsp;&nbsp;&nbsp;$39268 | &nbsp;&nbsp;&nbsp;$51865 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class I** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.05 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.05 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.50 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.15) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.15) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;$7.91 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.85 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.40 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.81 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.82 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.21 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.50 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.92 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.80 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 |
| Net assets at end of period (000 omitted) | $926884 | &nbsp;&nbsp;&nbsp;$933762 | &nbsp;&nbsp;&nbsp;$1047034 | &nbsp;&nbsp;&nbsp;$1435075 | &nbsp;&nbsp;&nbsp;$1413405 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Municipal Limited Maturity Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R6** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.05 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;$0.26 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.34 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;$0.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.15 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.43) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.49 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.22) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.16) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.15) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;$7.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.86 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$7.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$8.39 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.90 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5.16) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.16 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.44 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.83 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.84 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18 |
| Net assets at end of period (000 omitted) | $570648 | &nbsp;&nbsp;&nbsp;$533942 | &nbsp;&nbsp;&nbsp;$609185 | &nbsp;&nbsp;&nbsp;$618894 | &nbsp;&nbsp;&nbsp;$500212 |

---

(d) Per share data is based on average shares outstanding.

(f) Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note 2 in the Notes to Financial Statements for additional information.

(r) Certain expenses have been reduced without which performance would have been lower.

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

(t) Total returns do not include any applicable sales charges.

(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at
period end for financial reporting purposes.

------

MFS Municipal Limited Maturity Fund

### Notes to Financial Statements
(1) Business and Organization

MFS Municipal Limited Maturity Fund (the fund) is a diversified series of MFS Series Trust IX (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 primarily in municipal instruments, which generally trade in the over-the-counter market. The value of municipal instruments can be affected by changes in their actual or perceived credit quality. The credit quality of, and the ability to pay principal and interest when due by, an issuer of a municipal instrument depends on the credit quality of the entity supporting the municipal instrument, how essential any services supported by the municipal instrument are, the sufficiency of any revenues or taxes that support the municipal instrument, and/or the willingness or ability of the appropriate government entity to approve any appropriations necessary to support the municipal instrument. Municipal instruments may be supported by insurance which typically guarantees the timely payment of all principal and interest due on the underlying municipal instrument. The value of a municipal instrument can be volatile and significantly affected by adverse tax changes or court rulings, legislative or political changes, changes in specific or general market and economic conditions in the region where the instrument is issued, and the financial condition of municipal issuers and of municipal instrument insurers of which there are a limited number. Also, because many municipal instruments are issued to finance similar projects, conditions in certain industries can significantly affect the fund and the overall municipal market. If the Internal Revenue Service determines an issuer of a municipal instrument has not complied with the applicable tax requirements, interest from the security could become taxable, the security could decline in value, and certain distributions made by the fund could be taxable to shareholders.**

In this reporting period, the fund adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect the fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. The fund represents a single operating segment and the Chairman's Committee of the fund's adviser acts as the segment's CODM. The fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within the fund's financial statements.

**Balance Sheet Offsetting — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.**

**Investment Valuations — Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.**

------

MFS Municipal Limited Maturity Fund

Notes to Financial Statements - continued

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. Open-end investment companies are generally valued at net asset value per share.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data. 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. The following is a summary of the levels used as of April 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| Municipal Bonds | $— | $2568942610 | $— | $2568942610 |
| U.S. Corporate Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8398478 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8398478 |
| Investment Companies | &nbsp;&nbsp;43474178 |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43474178 |
| Total | $43474178 | $2577341088 | $— | $2620815266 |

---

For further information regarding security characteristics, see the Portfolio of Investments.

**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.**

Debt obligations may be placed on non-accrual status or set to accrue at a rate of interest less than the contractual coupon when the collection of all or a portion of interest has become doubtful. Interest income for those debt obligations may be further reduced by the write-off of the related interest receivables when deemed uncollectible.

------

MFS Municipal Limited Maturity Fund

Notes to Financial Statements - continued

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 securities on a when-issued or delayed delivery basis. In these extended settlement transactions, the receipt or delivery of the securities by the fund and related payments occur at a future date, usually beyond the customary settlement period. The price of such security and the date that the security will be settled are generally fixed at the time the transaction is negotiated. The value of the security varies with market fluctuations and for debt securities no interest accrues to the fund until settlement takes place. When the fund sells securities on a when-issued or delayed delivery basis, the fund typically owns or has the right to acquire securities equivalent in kind and amount to the securities sold. Purchase and sale commitments for when-issued or delayed delivery securities are held at carrying amount, which approximates fair value and are categorized as level 2 within the fair value hierarchy, and included in When-issued investments purchased and When-issued investments sold in the Statement of Assets and Liabilities, as applicable. Losses may arise due to changes in the value of the underlying securities prior to settlement date or if the counterparty does not perform under the contract's terms, or if the issuer does not issue the securities.

Legal fees and other related expenses incurred to preserve and protect the value of a security owned are added to the cost of the security; other legal fees are expensed. Capital infusions made directly to the security issuer, which are generally non-recurring, incurred to protect or enhance the value of high-yield debt securities, are reported as additions to the cost basis of the security. Costs that are incurred to negotiate the terms or conditions of capital infusions or that are expected to result in a plan of reorganization are reported as realized losses. Ongoing costs incurred to protect or enhance an investment, or costs incurred to pursue other claims or legal actions, are expensed.

**Fees Paid Indirectly — The fund's custody fee may be reduced by a credit earned under an arrangement that measures the value of U.S. dollars deposited with the custodian by the fund. The amount of the credit, for the year ended April 30, 2025, is shown as a reduction of total expenses in the Statement of Operations.**

**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 and tax-exempt income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability.**

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.

During the year ended April 30, 2025, there were no significant adjustments due to differences between book and tax accounting.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;&nbsp;$3068518 | &nbsp;&nbsp;&nbsp;&nbsp;$2061744 |
| Tax-exempt income | &nbsp;&nbsp;&nbsp;&nbsp;76949484 | &nbsp;&nbsp;&nbsp;&nbsp;69673043 |
| Total distributions | &nbsp;&nbsp;&nbsp;$80018002 | &nbsp;&nbsp;&nbsp;$71734787 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

------

MFS Municipal Limited Maturity Fund

Notes to Financial Statements - continued

---

| | |
|:---|:---|
| **As of 4/30/25** |  |
| Cost of investments | &nbsp;&nbsp;&nbsp;$2640921189 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15619936 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(35725859) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(20105923) |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2373902 |
| Undistributed tax-exempt income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1663588 |
| Capital loss carryforwards | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(111641867) |
| Other temporary differences | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6870076) |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;&nbsp;$(134580376) |

---

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 | &nbsp;&nbsp;$(38567994) |
| Long-Term | &nbsp;&nbsp;&nbsp;(73073873) |
| Total | $(111641867) |

---

**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 B and 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:**

---

| | | |
|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Class A | $32918881 | &nbsp;&nbsp;&nbsp;$29353909 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1476 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1995 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;340822 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;392851 |
| Class I | &nbsp;&nbsp;29317027 | &nbsp;&nbsp;&nbsp;&nbsp;26117550 |
| Class R6 | &nbsp;&nbsp;17439796 | &nbsp;&nbsp;&nbsp;&nbsp;15868482 |
| Total | $80018002 | &nbsp;&nbsp;&nbsp;$71734787 |

---

(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 $2.5 billion | 0.35% |
| In excess of $2.5 billion and up to $5 billion | 0.30% |
| In excess of $5 billion | 0.28% |

---

MFS has agreed in writing to reduce its management fee by a specified amount if certain MFS mutual fund assets exceed thresholds agreed to by MFS and the fund's Board of Trustees. MFS has also agreed in writing to waive at least 0.01% of its management fee as part of this agreement. The agreement to waive at least 0.01% of the management fee will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2026. For the year ended April 30, 2025, this management fee reduction amounted to $353,019, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.33% of the fund's average daily net assets.

------

MFS Municipal Limited Maturity Fund

Notes to Financial Statements - continued

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:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  |  | &nbsp;&nbsp;&nbsp;**Classes** |  |  |
| **A** | &nbsp;&nbsp;&nbsp;**B** | &nbsp;&nbsp;&nbsp;**C** | &nbsp;&nbsp;&nbsp;**I** | &nbsp;&nbsp;&nbsp;**R6** |
| 0.59% | &nbsp;&nbsp;&nbsp;1.34% | &nbsp;&nbsp;&nbsp;1.44% | &nbsp;&nbsp;&nbsp;0.44% | &nbsp;&nbsp;&nbsp;0.36% |

---

This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2025. For the year ended April 30, 2025, this reduction amounted to $550,923, 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 $32,010 for the year ended April 30, 2025, as its portion of the initial sales charge on sales of Class A shares of the fund.**

The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.

The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. The distribution and service fees are computed daily and paid monthly.

#### Distribution Plan Fee Table:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.15% | $2773565 |
| Class B | 0.75% | 0.25% | 1.00% | 0.90% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;666 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;161501 |
| Total Distribution and Service Fees |  |  |  |  | $2935732 |

---

(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each class's average daily
net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended April 30, 2025 based on each class's average daily net assets.
0.10% of the Class A and Class B service fee is currently being waived under a written waiver agreement. For the year ended April 30, 2025, this waiver amounted to $1,109,412 and $67 for Class A and Class B shares,
respectively, and is included in the reduction of total expenses in the Statement of Operations. This written waiver agreement will continue until modified by the fund's Board of Trustees, but such agreement
will continue at least until August 31, 2025. MFD has voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on
the account except for accounts attributable to MFS or its affiliates' seed money. There were no service fee rebates for the year ended April 30, 2025.

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended April 30, 2025, were as follows:

---

| | |
|:---|:---|
|  | **Amount** |
| Class A | $100211 |
| Class B |  |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;1763 |

---

**Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended April 30, 2025, the fee was $38,387, which equated to 0.0015% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended April 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $1,525,443.**

------

MFS Municipal Limited Maturity Fund

Notes to Financial Statements - continued

**Administrator — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.0143% 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 3 shares of Class I for an aggregate amount of $21.

(4) Portfolio Securities

For the year ended April 30, 2025, purchases and sales of investments, other than short-term obligations, aggregated $773,297,483 and $731,310,159, respectively.

(5) Shares of Beneficial Interest

The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;36066951 | &nbsp;&nbsp;&nbsp;$287210714 | &nbsp;&nbsp;&nbsp;&nbsp;39759896 | &nbsp;&nbsp;&nbsp;&nbsp;$311841532 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;285300 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2272394 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;265507 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2085244 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;44880512 | &nbsp;&nbsp;&nbsp;&nbsp;356668406 | &nbsp;&nbsp;&nbsp;&nbsp;49615641 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;387679263 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;20584738 | &nbsp;&nbsp;&nbsp;&nbsp;163508793 | &nbsp;&nbsp;&nbsp;&nbsp;19612168 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;153358011 |
|  | 101817501 | &nbsp;&nbsp;&nbsp;$809660307 | &nbsp;&nbsp;&nbsp;109253212 | &nbsp;&nbsp;&nbsp;&nbsp;$854964050 |
| Shares issued to shareholders<br> in reinvestment of distributions |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;3936001 | &nbsp;&nbsp;&nbsp;&nbsp;$31343609 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3533165 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$27701959 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1468 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;255 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1995 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;37075 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;295285 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;43093 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;337845 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;2905901 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;23117414 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2604357 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;20392944 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;2075421 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16503146 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1889066 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;14785170 |
|  | &nbsp;&nbsp;&nbsp;&nbsp;8954583 | &nbsp;&nbsp;&nbsp;&nbsp;$71260922 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8069936 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$63219913 |
| Shares reacquired |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;(39557614) | &nbsp;&nbsp;$(314921246) | &nbsp;&nbsp;&nbsp;(55850359) | &nbsp;&nbsp;&nbsp;&nbsp;$(437769726) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2116) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(16942) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9686) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(76211) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;(1030175) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8194694) | &nbsp;&nbsp;&nbsp;&nbsp;(1458408) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(11402838) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;(49318380) | &nbsp;&nbsp;&nbsp;(392363761) | &nbsp;&nbsp;&nbsp;(67027485) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(523713406) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;(18395826) | &nbsp;&nbsp;&nbsp;(146098223) | &nbsp;&nbsp;&nbsp;(31310632) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(244833375) |
|  | (108304111) | &nbsp;&nbsp;$(861594866) | &nbsp;&nbsp;(155656570) | &nbsp;&nbsp;$(1217795556) |

---

------

MFS Municipal Limited Maturity Fund

Notes to Financial Statements - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Net change |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;445338 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$3633077 | &nbsp;&nbsp;&nbsp;(12557298) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(98226235) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1931) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(15474) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9431) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(74216) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(707800) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5627015) | &nbsp;&nbsp;&nbsp;&nbsp;(1149808) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8979749) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;(1531967) | &nbsp;&nbsp;&nbsp;&nbsp;(12577941) | &nbsp;&nbsp;&nbsp;(14807487) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(115641199) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;4264333 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;33913716 | &nbsp;&nbsp;&nbsp;&nbsp;(9809398) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(76690194) |
|  | &nbsp;&nbsp;&nbsp;&nbsp;2467973 | &nbsp;&nbsp;&nbsp;&nbsp;$19326363 | &nbsp;&nbsp;&nbsp;(38333422) | &nbsp;&nbsp;&nbsp;&nbsp;$(299611593) |

---

Effective May 1, 2006, purchases of the fund's Class B shares were closed to new and existing investors subject to certain exceptions.

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended April 30, 2025, the fund's commitment fee and interest expense were $13,627 and $0, respectively, and are included in "Miscellaneous" expense in the Statement of Operations.

(7) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the year ended April 30, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$18196513 | &nbsp;&nbsp;&nbsp;$782480647 | &nbsp;&nbsp;&nbsp;$757196502 | &nbsp;&nbsp;&nbsp;$(5680) | &nbsp;&nbsp;&nbsp;$(800) | &nbsp;&nbsp;&nbsp;$43474178 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$2876936 | &nbsp;&nbsp;&nbsp;$— |

---

------

MFS Municipal Limited Maturity Fund

### Report of Independent Registered Public Accounting Firm
To the Board of Trustees of MFS Series Trust IX and the Shareholders of MFS Municipal Limited Maturity Fund:

#### Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of MFS Municipal Limited Maturity Fund (the "Fund"), including the portfolio of investments, as of April 30, 2025, the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of April 30, 2025, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

#### Basis for Opinion
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of April 30, 2025, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

DELOITTE & TOUCHE LLP

Boston, Massachusetts

June 13, 2025

We have served as the auditor of one or more of the MFS investment companies since 1924.

------

MFS Municipal Limited Maturity Fund

### Results of Shareholder Meeting (unaudited)
At a special meeting of shareholders of MFS Series Trust IX, which was held on November 14, 2024, the following action was taken:

#### Item 1: To elect the following individuals as Trustees, effective January 1, 2025:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Number of Dollars** | &nbsp;&nbsp;&nbsp;**Number of Dollars** |
| **Nominee** | &nbsp;&nbsp;&nbsp;**For** | &nbsp;&nbsp;&nbsp;**Against/Withheld** |
| Steven E. Buller | &nbsp;&nbsp;&nbsp;16907334964.271 | &nbsp;&nbsp;&nbsp;564877606.664 |
| John A. Caroselli | &nbsp;&nbsp;&nbsp;16919748090.782 | &nbsp;&nbsp;&nbsp;552464480.153 |
| Maureen R. Goldfarb | &nbsp;&nbsp;&nbsp;16987867788.742 | &nbsp;&nbsp;&nbsp;484344782.193 |
| Peter D. Jones | &nbsp;&nbsp;&nbsp;16947211557.080 | &nbsp;&nbsp;&nbsp;525001013.855 |
| John P. Kavanaugh | &nbsp;&nbsp;&nbsp;16952477521.647 | &nbsp;&nbsp;&nbsp;519735049.288 |
| James W. Kilman, Jr. | &nbsp;&nbsp;&nbsp;16931150908.125 | &nbsp;&nbsp;&nbsp;541061662.810 |
| Clarence Otis, Jr. | &nbsp;&nbsp;&nbsp;16921309024.232 | &nbsp;&nbsp;&nbsp;550903546.702 |
| Michael W. Roberge | &nbsp;&nbsp;&nbsp;16956315372.901 | &nbsp;&nbsp;&nbsp;515897198.033 |
| Maryanne L. Roepke | &nbsp;&nbsp;&nbsp;16988422371.536 | &nbsp;&nbsp;&nbsp;483790199.398 |
| Paula E. Smith | &nbsp;&nbsp;&nbsp;17026175142.111 | &nbsp;&nbsp;&nbsp;446037428.824 |
| Laurie J. Thomsen | &nbsp;&nbsp;&nbsp;16991821354.292 | &nbsp;&nbsp;&nbsp;480391216.642 |
| Darrell A. Williams | &nbsp;&nbsp;&nbsp;16944148530.126 | &nbsp;&nbsp;&nbsp;528064040.808 |

---

------

MFS Municipal Limited Maturity Fund

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

Of the dividends paid from net investment income during the fiscal year, 96.17% is designated as exempt interest dividends for federal income tax purposes. If the fund has earned income on private activity bonds, a portion of the dividends paid may be considered a tax preference item for purposes of computing a shareholder's alternative minimum tax.

The fund intends to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

------

#### ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
There is nothing to report for this item for MFS Municipal Limited Maturity Fund.

#### ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Municipal Limited Maturity 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 Municipal Limited Maturity Fund. See the Statement of Operations and Note 3 within the Notes to Financial Statements for more information.

#### ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.
Not Applicable.

------

MFS Total Return Bond Fund

#### ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
MFS Total Return Bond Fund

### Portfolio of Investments - 4/30/25
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – 98.6% | Bonds – 98.6% | Bonds – 98.6% |
| Aerospace & Defense – 1.3% | Aerospace & Defense – 1.3% | Aerospace & Defense – 1.3% |
| Boeing Co., 2.196%, 2/04/2026 | $&nbsp;&nbsp;26637000 | &nbsp;&nbsp;$26098135 |
| Boeing Co., 5.15%, 5/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;7084000 | &nbsp;&nbsp;&nbsp;&nbsp; **7151493** |
| Boeing Co., 6.528%, 5/01/2034 | &nbsp;&nbsp;20794000 | &nbsp;&nbsp;&nbsp;&nbsp; **22335754** |
| Boeing Co., 5.705%, 5/01/2040 | &nbsp;&nbsp;&nbsp;&nbsp;6632000 | &nbsp;&nbsp;&nbsp;&nbsp; **6438105** |
| Boeing Co., 5.805%, 5/01/2050 | &nbsp;&nbsp;14572000 | &nbsp;&nbsp;&nbsp;&nbsp; **13658524** |
| TransDigm, Inc., 4.625%, 1/15/2029 | &nbsp;&nbsp;33133000 | &nbsp;&nbsp;&nbsp;&nbsp; **31868375** |
|  |  | &nbsp;&nbsp; **$107550386** |
| Asset-Backed & Securitized – 18.3% | Asset-Backed & Securitized – 18.3% | Asset-Backed & Securitized – 18.3% |
| ACREC 2025-FL3 LLC, "AS", FLR, 5.96% (SOFR - 1mo. + 1.64%), 8/18/2042 (n) | $&nbsp;&nbsp;23763500 | &nbsp;&nbsp;$23441219 |
| ACREC 2021-FL1 Ltd., "C", FLR, 6.584% ((SOFR - 1mo. + 0.11448%) + 2.15%), 10/16/2036 (n) | &nbsp;&nbsp;10841500 | &nbsp;&nbsp;&nbsp;&nbsp; **10789207** |
| ACREC 2021-FL1 Ltd., "D", FLR, 7.084% ((SOFR - 1mo. + 0.11448%) + 2.65%), 10/16/2036 (n) | &nbsp;&nbsp;13074500 | &nbsp;&nbsp;&nbsp;&nbsp; **12991472** |
| American Credit Acceptance Receivables Trust, 2024-2, "B", 6.1%, 12/13/2027 (n) | &nbsp;&nbsp;12774000 | &nbsp;&nbsp;&nbsp;&nbsp; **12835747** |
| AmeriCredit Automobile Receivables Trust, 2024-1, "A2-A", 5.75%, 2/18/2028 | &nbsp;&nbsp;&nbsp;&nbsp;7325941 | &nbsp;&nbsp;&nbsp;&nbsp; **7344894** |
| Angel Oak Mortgage Trust, 2024-10, "A1", 5.348%, 10/25/2069 (n) | &nbsp;&nbsp;25524113 | &nbsp;&nbsp;&nbsp;&nbsp; **25466018** |
| Angel Oak Mortgage Trust, 2024-12, "A1", 5.653%, 10/25/2069 (n) | &nbsp;&nbsp;23903750 | &nbsp;&nbsp;&nbsp;&nbsp; **23964142** |
| Angel Oak Mortgage Trust, 2024-9, "A1", 5.138%, 9/25/2069 (n) | &nbsp;&nbsp;14791552 | &nbsp;&nbsp;&nbsp;&nbsp; **14710038** |
| Arbor Realty Trust, Inc., CLO, 2021-FL3, "C", FLR, 6.286% ((SOFR - 1mo. + 0.11448%) + 1.85%), 8/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9870000 | &nbsp;&nbsp;&nbsp;&nbsp; **9750089** |
| Arbor Realty Trust, Inc., CLO, 2021-FL3, "D", FLR, 6.636% ((SOFR - 1mo. + 0.11448%) + 2.2%), 8/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4110000 | &nbsp;&nbsp;&nbsp;&nbsp; **4040751** |
| Arbor Realty Trust, Inc., CLO, 2021-FL4, "A", FLR, 5.786% ((SOFR - 1mo. + 0.11448%) + 1.35%), 11/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3605006 | &nbsp;&nbsp;&nbsp;&nbsp; **3589100** |
| Arbor Realty Trust, Inc., CLO, 2021-FL4, "C", FLR, 6.736% ((SOFR - 1mo. + 0.11448%) + 2.3%), 11/15/2036 (n) | &nbsp;&nbsp;14892500 | &nbsp;&nbsp;&nbsp;&nbsp; **14772662** |
| Arbor Realty Trust, Inc., CLO, 2022-FL1, "D", FLR, 7.345% (SOFR - 30 day + 3%), 1/15/2037 (n) | &nbsp;&nbsp;40620500 | &nbsp;&nbsp;&nbsp;&nbsp; **40579810** |
| AREIT 2022-CRE6 Trust, "B", FLR, 6.2% (SOFR - 30 day + 1.85%), 1/20/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4924000 | &nbsp;&nbsp;&nbsp;&nbsp; **4899994** |
| AREIT 2022-CRE6 Trust, "C", FLR, 6.5% (SOFR - 30 day + 2.15%), 1/20/2037 (n) | &nbsp;&nbsp;10134500 | &nbsp;&nbsp;&nbsp;&nbsp; **10037792** |
| AREIT 2022-CRE6 Trust, "D", FLR, 7.2% (SOFR - 30 day + 2.85%), 1/20/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4313500 | &nbsp;&nbsp;&nbsp;&nbsp; **4293600** |
| AREIT 2025-CRE10 Ltd., "AS", FLR, 5.87% (SOFR - 1mo. + 1.5421%), 1/17/2030 (n) | &nbsp;&nbsp;21646489 | &nbsp;&nbsp;&nbsp;&nbsp; **21479138** |
| ARI Fleet Lease Trust, 2023-B, "A2", 6.05%, 7/15/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2598938 | &nbsp;&nbsp;&nbsp;&nbsp; **2619330** |
| Bain Capital Credit CLO Ltd., 2021-6A, "BR", FLR, 5.819% (SOFR - 3mo. + 1.55%), 10/21/2034 (n) | &nbsp;&nbsp;18243515 | &nbsp;&nbsp;&nbsp;&nbsp; **17959026** |
| Bayview Commercial Asset Trust, 0%, 12/25/2036 (i)(n) | &nbsp;&nbsp;&nbsp;&nbsp;1223355 | &nbsp;&nbsp;&nbsp; **122** |
| Bayview Commercial Asset Trust, FLR, 4.906% ((SOFR - 1mo. + 0.11448%) + 0.4658%), 8/25/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;71891 | &nbsp;&nbsp;&nbsp;&nbsp; **69301** |
| Bayview Financial Revolving Mortgage Loan Trust, FLR, 6.034% ((SOFR - 1mo. + 0.11448%) + 1.6%), 12/28/2040 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;278457 | &nbsp;&nbsp;&nbsp;&nbsp; **542360** |
| BBCMS Mortgage Trust, 2019-C5, "A4", 3.063%, 11/15/2052 | &nbsp;&nbsp;&nbsp;&nbsp;9055000 | &nbsp;&nbsp;&nbsp;&nbsp; **8508068** |
| BBCMS Mortgage Trust, 2022-C18, "AS", 6.35%, 12/15/2055 | &nbsp;&nbsp;10215909 | &nbsp;&nbsp;&nbsp;&nbsp; **10879251** |
| BDS 2024-FL13 Ltd., "A", FLR, 5.896% (SOFR - 1mo. + 1.5762%), 9/19/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6329500 | &nbsp;&nbsp;&nbsp;&nbsp; **6290744** |
| BDS 2025-FL14 Ltd., "B", FLR, 6.013% (SOFR - 1mo. + 1.6926%), 10/21/2042 (n) | &nbsp;&nbsp;13272979 | &nbsp;&nbsp;&nbsp;&nbsp; **12915272** |
| Benchmark 2023-V3 Mortgage Trust, "A3", 6.363%, 7/15/2056 | &nbsp;&nbsp;&nbsp;&nbsp;4675254 | &nbsp;&nbsp;&nbsp;&nbsp; **4904971** |
| Black Diamond CLO Ltd., 2019-2A, "A2R", FLR, 6.479% (SOFR - 3mo. + 2.2%), 7/23/2032 (n) | &nbsp;&nbsp;23878452 | &nbsp;&nbsp;&nbsp;&nbsp; **23842396** |
| Brazos Securitization LLC, 5.413%, 9/01/2050 (n) | &nbsp;&nbsp;15634000 | &nbsp;&nbsp;&nbsp;&nbsp; **14935054** |
| BSPRT 2021-FL6 Issuer Ltd., "B", FLR, 6.036% ((SOFR - 1mo. + 0.11448%) + 1.6%), 3/15/2036 (n) | &nbsp;&nbsp;15128000 | &nbsp;&nbsp;&nbsp;&nbsp; **15006008** |
| BSPRT 2021-FL6 Issuer Ltd., "C", FLR, 6.486% ((SOFR - 1mo. + 0.11448%) + 2.05%), 3/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5310500 | &nbsp;&nbsp;&nbsp;&nbsp; **5244788** |
| BSPRT 2021-FL7 Issuer Ltd., "C", FLR, 6.736% ((SOFR - 1mo. + 0.11448%) + 2.3%), 12/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3651000 | &nbsp;&nbsp;&nbsp;&nbsp; **3613252** |
| BSPRT 2021-FL7 Issuer Ltd., "D", FLR, 7.186% ((SOFR - 1mo. + 0.11448%) + 2.75%), 12/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4152500 | &nbsp;&nbsp;&nbsp;&nbsp; **4073856** |
| Business Jet Securities LLC, 2024-1A, "A", 6.197%, 5/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4503109 | &nbsp;&nbsp;&nbsp;&nbsp; **4561101** |
| Business Jet Securities LLC, 2024-1A, "B", 6.924%, 5/15/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;627985 | &nbsp;&nbsp;&nbsp;&nbsp; **635806** |
| BXMT 2020-FL2 Ltd., "B", FLR, 6.092% ((SOFR - 1mo. + 0.11448%) + 1.4%), 2/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6104500 | &nbsp;&nbsp;&nbsp;&nbsp; **5986408** |
| BXMT 2021-FL4 Ltd., "AS", FLR, 5.743% ((SOFR - 1mo. + 0.11448%) + 1.3%), 5/15/2038 (n) | &nbsp;&nbsp;17470500 | &nbsp;&nbsp;&nbsp;&nbsp; **17010865** |
| BXMT 2021-FL4 Ltd., "B", FLR, 5.993% ((SOFR - 1mo. + 0.11448%) + 1.55%), 5/15/2038 (n) | &nbsp;&nbsp;38262000 | &nbsp;&nbsp;&nbsp;&nbsp; **36692210** |
| Cantor Commercial Real Estate, 2019-CF2, "A5", 2.874%, 11/15/2052 | &nbsp;&nbsp;20960656 | &nbsp;&nbsp;&nbsp;&nbsp; **19306768** |
| C-BASS Mortgage Loan Trust, 2007-CB1, "AF3", 3.109%, 1/25/2037 (d)(q) | &nbsp;&nbsp;&nbsp;&nbsp;1056387 | &nbsp;&nbsp;&nbsp;&nbsp; **289878** |

---

RBFFS-ANN

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued |
| C-BASS Mortgage Loan Trust, 2007-CB3, "A3", 3.277%, 3/25/2037 (d)(q) | $&nbsp;&nbsp;&nbsp;&nbsp;1088976 | &nbsp;&nbsp;$367714 |
| Chesapeake Funding II LLC, 2023-1A, "A1", 5.65%, 5/15/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2917204 | &nbsp;&nbsp;&nbsp;&nbsp; **2934048** |
| CIFC Funding 2016-IA BR3, Ltd., FLR, 5.719% (SOFR - 3mo. + 1.45%), 10/21/2031 (n) | &nbsp;&nbsp;23000000 | &nbsp;&nbsp;&nbsp;&nbsp; **22827132** |
| Citigroup Commercial Mortgage Trust, 2016-P6, "A5", 3.72%, 12/10/2049 | &nbsp;&nbsp;&nbsp;&nbsp;5948000 | &nbsp;&nbsp;&nbsp;&nbsp; **5795423** |
| Colt Funding LLC, 2024-5, "A1", 5.123%, 8/25/2069 (n) | &nbsp;&nbsp;16620169 | &nbsp;&nbsp;&nbsp;&nbsp; **16529139** |
| Columbia Cent CLO 2021-31A, Ltd., FLR, 6.119% (SOFR - 3mo. + 1.85%), 4/20/2034 (n) | &nbsp;&nbsp;13263241 | &nbsp;&nbsp;&nbsp;&nbsp; **12781056** |
| Commercial Mortgage Pass-Through Certificates, 2019-BNK17, "AS", 3.976%, 4/15/2052 | &nbsp;&nbsp;&nbsp;&nbsp;5000000 | &nbsp;&nbsp;&nbsp;&nbsp; **4785465** |
| Commercial Mortgage Pass-Through Certificates, 2023-BNK46, "A4", 5.745%, 8/15/2056 | &nbsp;&nbsp;21951777 | &nbsp;&nbsp;&nbsp;&nbsp; **22890569** |
| Commercial Mortgage Pass-Through Certificates, 2023-BNK46, "AS", 6.385%, 8/15/2056 | &nbsp;&nbsp;12725671 | &nbsp;&nbsp;&nbsp;&nbsp; **13364198** |
| Commercial Mortgage Trust, 2015-LC21, "A4", 3.708%, 7/10/2048 | &nbsp;&nbsp;&nbsp;&nbsp;6272466 | &nbsp;&nbsp;&nbsp;&nbsp; **6263945** |
| Commercial Mortgage Trust, 2015-PC1, "A5", 3.902%, 7/10/2050 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;625438 | &nbsp;&nbsp;&nbsp;&nbsp; **624568** |
| Commercial Mortgage Trust, 2017-COR2, "A3", 3.51%, 9/10/2050 | &nbsp;&nbsp;26790000 | &nbsp;&nbsp;&nbsp;&nbsp; **26064256** |
| Consumers 2023 Securitization Funding LLC, 5.55%, 3/01/2028 | &nbsp;&nbsp;&nbsp;&nbsp;7475027 | &nbsp;&nbsp;&nbsp;&nbsp; **7584736** |
| CSAIL Commercial Mortgage Trust, 2015-C2, "A4", 3.504%, 6/15/2057 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;985447 | &nbsp;&nbsp;&nbsp;&nbsp; **983304** |
| Deephaven Residential Mortgage Trust, 2024-1A, "A", 5.735%, 7/25/2069 (n) | &nbsp;&nbsp;33041784 | &nbsp;&nbsp;&nbsp;&nbsp; **33137040** |
| DLLST LLC, 2024-1A, "A2", 5.33%, 1/20/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1491389 | &nbsp;&nbsp;&nbsp;&nbsp; **1492563** |
| Dryden Senior Loan Fund, 2017-49A, "CR", CLO, FLR, 6.581% ((SOFR - 3mo. + 0.26161%) + 2.05%), 7/18/2030 (n) | &nbsp;&nbsp;16500000 | &nbsp;&nbsp;&nbsp;&nbsp; **16508926** |
| ELM Trust, 2024-ELM, "C10", 6.189%, 6/10/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3802054 | &nbsp;&nbsp;&nbsp;&nbsp; **3827154** |
| ELM Trust, 2024-ELM, "C15", 6.189%, 6/10/2039 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5182790 | &nbsp;&nbsp;&nbsp;&nbsp; **5215998** |
| Empire District Bondco LLC, 4.943%, 1/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;7494993 | &nbsp;&nbsp;&nbsp;&nbsp; **7568106** |
| Enterprise Fleet Financing 2023-3 LLC, "A2", 6.4%, 3/20/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7476925 | &nbsp;&nbsp;&nbsp;&nbsp; **7599184** |
| Enterprise Fleet Financing 2024-4 LLC, "A2", 4.69%, 7/20/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6045000 | &nbsp;&nbsp;&nbsp;&nbsp; **6059978** |
| Exeter Automobile Receivables Trust, 2025-1A, "A", 4.7%, 9/15/2027 | &nbsp;&nbsp;12992000 | &nbsp;&nbsp;&nbsp;&nbsp; **12994969** |
| GLS Auto Select Receivables Trust, 2023-2A, 6.37%, 6/15/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3418579 | &nbsp;&nbsp;&nbsp;&nbsp; **3449594** |
| GMAC Mortgage Corp. Loan Trust, FGIC, 5.805%, 10/25/2036 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;59085 | &nbsp;&nbsp;&nbsp;&nbsp; **62071** |
| GS Mortgage Securities Trust, 2015-GC30, "A4", 3.382%, 5/10/2050 | &nbsp;&nbsp;&nbsp;&nbsp;3471461 | &nbsp;&nbsp;&nbsp;&nbsp; **3466621** |
| HarbourView CLO VII Ltd., 7RA, "B", FLR, 6.231% ((SOFR - 3mo. + 0.26161%) + 1.7%), 7/18/2031 (n) | &nbsp;&nbsp;15920000 | &nbsp;&nbsp;&nbsp;&nbsp; **15893700** |
| Hyundai Auto Lease Securitization Trust, 2025-B, 4.58%, 9/15/2027 (n) | &nbsp;&nbsp;10314000 | &nbsp;&nbsp;&nbsp;&nbsp; **10321669** |
| IMPAC CMB Trust, FLR, 5.181% ((SOFR - 1mo. + 0.11448%) + 0.74%), 11/25/2034 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8118 | &nbsp;&nbsp;&nbsp;&nbsp; **7988** |
| IMPAC CMB Trust, FLR, 5.361% ((SOFR - 1mo. + 0.11448%) + 0.92%), 11/25/2034 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4059 | &nbsp;&nbsp;&nbsp;&nbsp; **4010** |
| IMPAC Secured Assets Corp., FLR, 5.141% ((SOFR - 1mo. + 0.11448%) + 0.7%), 5/25/2036 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;28635 | &nbsp;&nbsp;&nbsp;&nbsp; **25638** |
| JPMDB Commercial Mortgage Securities Trust, 2017-C7, 3.409%, 10/15/2050 | &nbsp;&nbsp;11500000 | &nbsp;&nbsp;&nbsp;&nbsp; **11001612** |
| KKR Static CLO Ltd., 2022-1A, "BR2", FLR, 5.719% (SOFR - 3mo. + 1.45%), 7/20/2031 (n) | &nbsp;&nbsp;18455587 | &nbsp;&nbsp;&nbsp;&nbsp; **18280296** |
| Kubota Credit Owner Trust, 2023-2A, "A2", 5.61%, 7/15/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1306885 | &nbsp;&nbsp;&nbsp;&nbsp; **1308753** |
| LoanCore 2021-CRE5 Ltd., "AS", FLR, 6.186% ((SOFR - 1mo. + 0.11448%) + 1.75%), 7/15/2036 (n) | &nbsp;&nbsp;23249000 | &nbsp;&nbsp;&nbsp;&nbsp; **23139597** |
| LoanCore 2021-CRE5 Ltd., "B", FLR, 6.436% ((SOFR - 1mo. + 0.11448%) + 2.0%), 7/15/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8432000 | &nbsp;&nbsp;&nbsp;&nbsp; **8393286** |
| LoanCore 2021-CRE6 Ltd., "B", FLR, 6.336% ((SOFR - 1mo. + 0.11448%) + 1.9%), 11/15/2038 (n) | &nbsp;&nbsp;42852000 | &nbsp;&nbsp;&nbsp;&nbsp; **42369915** |
| LoanCore 2025-CRE8 Ltd., "AS", FLR, 5.919% (SOFR - 1mo. + 1.5909%), 8/17/2042 (n) | &nbsp;&nbsp;39804000 | &nbsp;&nbsp;&nbsp;&nbsp; **39156270** |
| Madison Park Funding Ltd., 2017-23A, "CR", FLR, 6.544% ((SOFR - 3mo. + 0.26161%) + 2%), 7/27/2031 (n) | &nbsp;&nbsp;24271403 | &nbsp;&nbsp;&nbsp;&nbsp; **24206161** |
| Magnetite XXXIX Ltd., 2023-39A, "BR", FLR, 5.832% (SOFR - 3mo. + 1.55%), 1/25/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6000000 | &nbsp;&nbsp;&nbsp;&nbsp; **5954682** |
| Man GLG US CLO, 2018-2 Ltd., "B", FLR, 7.272% (SOFR - 3mo. + 3%), 7/20/2035 (n) | &nbsp;&nbsp;16070750 | &nbsp;&nbsp;&nbsp;&nbsp; **16116825** |
| Merrill Lynch Mortgage Investors, Inc., 3.597%, 2/25/2037 (a)(d) | &nbsp;&nbsp;&nbsp;&nbsp;1735611 | &nbsp;&nbsp;&nbsp;&nbsp; **195327** |
| MF1 2020-FL4 Ltd., "AS", FLR, 6.543% ((SOFR - 1mo. + 0.11448%) + 2.1%), 12/15/2035 (n) | &nbsp;&nbsp;10615000 | &nbsp;&nbsp;&nbsp;&nbsp; **10618303** |
| MF1 2021-FL5 Ltd., "C", FLR, 6.142% ((SOFR - 1mo. + 0.11448%) + 1.7%), 7/15/2036 (n) | &nbsp;&nbsp;10670500 | &nbsp;&nbsp;&nbsp;&nbsp; **10628714** |
| MF1 2022-FL8 Ltd., "C", FLR, 6.519% (SOFR - 30 day + 2.2%), 2/19/2037 (n) | &nbsp;&nbsp;10626099 | &nbsp;&nbsp;&nbsp;&nbsp; **10451640** |
| MF1 2022-FL8 Ltd., "D", FLR, 6.969% (SOFR - 30 day + 2.65%), 2/19/2037 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6141972 | &nbsp;&nbsp;&nbsp;&nbsp; **5963175** |
| MF1 2024-FL14 LLC, "AS", FLR, 6.56% (SOFR - 1mo. + 2.24%), 3/19/2039 (n) | &nbsp;&nbsp;18526119 | &nbsp;&nbsp;&nbsp;&nbsp; **18549017** |
| MF1 2024-FL15 Ltd., "AS", FLR, 6.36% (SOFR - 1mo. + 2.04%), 8/18/2041 (n) | &nbsp;&nbsp;20521000 | &nbsp;&nbsp;&nbsp;&nbsp; **20469665** |
| MF1 2024-FL16 LLC, "AS", FLR, 6.262% (SOFR - 1mo. + 1.942%), 11/18/2039 (n) | &nbsp;&nbsp;22975592 | &nbsp;&nbsp;&nbsp;&nbsp; **22903727** |
| MF1 2025-FL17 LLC, "B", FLR, 6.112% (SOFR - 1mo. + 1.792%), 2/18/2040 (n) | &nbsp;&nbsp;12903700 | &nbsp;&nbsp;&nbsp;&nbsp; **12746443** |
| MF1 2025-FL17 Ltd., "AS", FLR, 5.892% (SOFR - 1mo. + 1.572%), 2/18/2040 (n) | &nbsp;&nbsp;20396684 | &nbsp;&nbsp;&nbsp;&nbsp; **20173503** |
| Morgan Stanley Residential Mortgage Loan Trust, 2024-NQM1, "A-1", 6.152%, 12/25/2068 (n) | &nbsp;&nbsp;12935189 | &nbsp;&nbsp;&nbsp;&nbsp; **13030287** |
| MSWF Commercial Mortgage Trust, 2023-2, "A5", 6.014%, 12/15/2056 | &nbsp;&nbsp;16089120 | &nbsp;&nbsp;&nbsp;&nbsp; **17175272** |
| Neuberger Berman CLO Ltd., 2013-15A, "CR2", FLR, 6.368% ((SOFR - 3mo. + 0.26161%) + 1.85%), 10/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5663303 | &nbsp;&nbsp;&nbsp;&nbsp; **5666769** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued | Asset-Backed & Securitized – continued |
| Neuberger Berman CLO Ltd., 2017-165A, "BR2", FLR, 5.91% (SOFR - 3mo. + 1.6%), 4/15/2039 (n) | $&nbsp;&nbsp;20000000 | &nbsp;&nbsp;$19843820 |
| Neuberger Berman Loan Advisers CLO Ltd., 2021-44A, FLR, 5.961% (SOFR - 3mo. + 1.7%), 10/16/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7678917 | &nbsp;&nbsp;&nbsp;&nbsp; **7546763** |
| Northwoods Capital Ltd., 2018-14BA, "BR", FLR, 6.165% (SOFR - 3mo. + 1.85%), 11/13/2031 (n) | &nbsp;&nbsp;16960213 | &nbsp;&nbsp;&nbsp;&nbsp; **16878024** |
| OBX Trust, 2024-NQM15, "A1", 5.316%, 10/25/2064 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9869544 | &nbsp;&nbsp;&nbsp;&nbsp; **9859951** |
| OBX Trust, 2024-NQM9, "A1", 6.03%, 1/25/2064 (n) | &nbsp;&nbsp;13769370 | &nbsp;&nbsp;&nbsp;&nbsp; **13867289** |
| OneMain Financial Issuance Trust, 2022-3A, "A", 5.94%, 5/15/2034 (n) | &nbsp;&nbsp;11210791 | &nbsp;&nbsp;&nbsp;&nbsp; **11265453** |
| Ownit Mortgage Loan Asset-Backed Certificates, 5.79%, 10/25/2035 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;429564 | &nbsp;&nbsp;&nbsp;&nbsp; **237535** |
| Palmer Square Loan Funding 2025-1A Ltd., "B", FLR, 5.921% (SOFR - 3mo. + 1.6%), 2/15/2033 (n) | &nbsp;&nbsp;17000000 | &nbsp;&nbsp;&nbsp;&nbsp; **16611125** |
| PFP III 2024-11 Ltd., "11A", FLR, 6.133% (SOFR - 1mo. + 1.83239%), 9/17/2039 (n) | &nbsp;&nbsp;31434974 | &nbsp;&nbsp;&nbsp;&nbsp; **31341046** |
| Preferred Term Securities XIX Ltd., CDO, FLR, 4.911% ((SOFR - 3mo. + 0.26161%) + 0.35%), 12/22/2035 (n) | &nbsp;&nbsp;&nbsp;&nbsp;1539047 | &nbsp;&nbsp;&nbsp;&nbsp; **1458247** |
| ReadyCap Commercial Mortgage Trust, 2021-FL7, "C", FLR, 6.641% ((SOFR - 1mo. + 0.11448%) + 2.2%), 11/25/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5795000 | &nbsp;&nbsp;&nbsp;&nbsp; **5757154** |
| ReadyCap Commercial Mortgage Trust, 2021-FL7, "D", FLR, 7.391% ((SOFR - 1mo. + 0.11448%) + 2.95%), 11/25/2036 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6825000 | &nbsp;&nbsp;&nbsp;&nbsp; **6818175** |
| Residential Funding Mortgage Securities, Inc., FGIC, 3.584%, 12/25/2035 (d)(q) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;137728 | &nbsp;&nbsp;&nbsp;&nbsp; **2275** |
| Rockford Tower CLO 2020-1A, Ltd., "BRR", FLR, 5.819% (SOFR - 3mo. + 1.55%), 1/20/2036 (n) | &nbsp;&nbsp;16776809 | &nbsp;&nbsp;&nbsp;&nbsp; **16514202** |
| Sammons Financial Group, Inc., FLR, 6.069% (SOFR - 3mo. + 1.8%), 10/21/2034 (n) | &nbsp;&nbsp;14464716 | &nbsp;&nbsp;&nbsp;&nbsp; **14168869** |
| Santander Drive Auto Receivables Trust, 2025-1, 4.74%, 1/16/2029 | &nbsp;&nbsp;12884000 | &nbsp;&nbsp;&nbsp;&nbsp; **12933339** |
| Signal Peak CLO 2014-1A, Ltd., "CR4", FLR, 6.23% (SOFR - 3mo. + 1.95%), 4/17/2034 (n) | &nbsp;&nbsp;18500000 | &nbsp;&nbsp;&nbsp;&nbsp; **18207755** |
| Starwood Commercial Mortgage, 2021-FL2, "C", FLR, 6.534% ((SOFR - 1mo. + 0.11448)% + 2.1%), 4/18/2038 (n) | &nbsp;&nbsp;11255500 | &nbsp;&nbsp;&nbsp;&nbsp; **11075279** |
| Starwood Commercial Mortgage, 2022-FL3, "B", FLR, 6.295% (SOFR - 30 day + 1.95%), 11/15/2038 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6082500 | &nbsp;&nbsp;&nbsp;&nbsp; **5948504** |
| Starwood Commercial Mortgage, 2022-FL3, "C", FLR, 6.545% (SOFR - 30 day + 2.2%), 11/15/2038 (n) | &nbsp;&nbsp;11508500 | &nbsp;&nbsp;&nbsp;&nbsp; **11134820** |
| STORE Master Funding LLC, 2014-1A, "A1", 5.69%, 5/20/2054 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2201663 | &nbsp;&nbsp;&nbsp;&nbsp; **2236059** |
| STORE Master Funding LLC, 2014-1A, "A2", 5.7%, 5/20/2054 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4598847 | &nbsp;&nbsp;&nbsp;&nbsp; **4731022** |
| UBS Commercial Mortgage Trust, 2017-C7, "A4", 3.679%, 12/15/2050 | &nbsp;&nbsp;33000000 | &nbsp;&nbsp;&nbsp;&nbsp; **32261721** |
| UBS Commercial Mortgage Trust, 2017-C8, "A4", 3.983%, 2/15/2051 | &nbsp;&nbsp;18388578 | &nbsp;&nbsp;&nbsp;&nbsp; **18030266** |
| Venture CLO 43 Ltd., 2021-43A, "BR", FLR, 6.106% (SOFR - 3mo. + 1.85%), 4/15/2034 (n) | &nbsp;&nbsp;28707969 | &nbsp;&nbsp;&nbsp;&nbsp; **28259608** |
| Verus Securitization Trust, 2014-1, "A1", 5.712%, 1/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7099795 | &nbsp;&nbsp;&nbsp;&nbsp; **7107165** |
| Verus Securitization Trust, 2024-8, "A1", 5.364%, 10/25/2069 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5749902 | &nbsp;&nbsp;&nbsp;&nbsp; **5742096** |
| Voya CLO 2012-4A Ltd., "A2R3", FLR, 5.968% ((SOFR - 3mo. + 0.26161%) + 1.45%), 10/15/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8202288 | &nbsp;&nbsp;&nbsp;&nbsp; **8192273** |
| Voya CLO 2012-4A Ltd., "BR3", FLR, 6.468% ((SOFR - 3mo. + 0.26161%) + 1.95%), 10/15/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3474736 | &nbsp;&nbsp;&nbsp;&nbsp; **3476063** |
| Voya CLO 2012-4A Ltd., "C1R3", FLR, 7.818% ((SOFR - 3mo. + 0.26161%) + 3.3%), 10/15/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4942894 | &nbsp;&nbsp;&nbsp;&nbsp; **4944243** |
| Wells Fargo Commercial Mortgage Trust, 2016-C34, "A4", 3.096%, 6/15/2049 | &nbsp;&nbsp;&nbsp;&nbsp;7740000 | &nbsp;&nbsp;&nbsp;&nbsp; **7552546** |
| Wells Fargo Commercial Mortgage Trust, 2016-LC25, "A4", 3.64%, 12/15/2059 | &nbsp;&nbsp;25027917 | &nbsp;&nbsp;&nbsp;&nbsp; **24581857** |
| Wells Fargo Commercial Mortgage Trust, 2017-C42, "A5", 3.589%, 12/15/2050 | &nbsp;&nbsp;13470000 | &nbsp;&nbsp;&nbsp;&nbsp; **13043431** |
|  |  | &nbsp;&nbsp;$1482430484 |
| Automotive – 0.2% | Automotive – 0.2% | Automotive – 0.2% |
| Stellantis Finance US, Inc., 2.691%, 9/15/2031 (n) | $&nbsp;&nbsp;14723000 | &nbsp;&nbsp;$12140957 |
| Broadcasting – 0.2% | Broadcasting – 0.2% | Broadcasting – 0.2% |
| WarnerMedia Holdings, Inc., 5.05%, 3/15/2042 | $&nbsp;&nbsp;13841000 | &nbsp;&nbsp;$10432840 |
| WMG Acquisition Corp., 3%, 2/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;9294000 | &nbsp;&nbsp;&nbsp;&nbsp; **8287784** |
|  |  | &nbsp;&nbsp; **$18720624** |
| Brokerage & Asset Managers – 1.4% | Brokerage & Asset Managers – 1.4% | Brokerage & Asset Managers – 1.4% |
| Charles Schwab Corp., 5.853% to 5/19/2033, FLR (SOFR - 1 day + 2.5%) to 5/19/2034 | $&nbsp;&nbsp;11882000 | &nbsp;&nbsp;$12414858 |
| Charles Schwab Corp., 6.136% to 8/24/2033, FLR (SOFR - 1 day + 2.01%) to 8/24/2034 | &nbsp;&nbsp;22528000 | &nbsp;&nbsp;&nbsp;&nbsp; **23936974** |
| Charles Schwab Corp., 5% to 6/01/2027, FLR (CMT - 5yr. + 3.256%) to 6/01/2170 | &nbsp;&nbsp;26796000 | &nbsp;&nbsp;&nbsp;&nbsp; **26136513** |
| Intercontinental Exchange, Inc., 5.25%, 6/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;8977000 | &nbsp;&nbsp;&nbsp;&nbsp; **9296372** |
| LPL Holdings, Inc., 6.75%, 11/17/2028 | &nbsp;&nbsp;&nbsp;&nbsp;6057000 | &nbsp;&nbsp;&nbsp;&nbsp; **6438569** |
| LPL Holdings, Inc., 4%, 3/15/2029 (n) | &nbsp;&nbsp;21696000 | &nbsp;&nbsp;&nbsp;&nbsp; **20884144** |
| LPL Holdings, Inc., 6%, 5/20/2034 | &nbsp;&nbsp;13107000 | &nbsp;&nbsp;&nbsp;&nbsp; **13335357** |
|  |  | &nbsp;&nbsp; **$112442787** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Building – 0.6% | Building – 0.6% | Building – 0.6% |
| Standard Industries, Inc., 4.375%, 7/15/2030 (n) | $&nbsp;&nbsp;25624000 | &nbsp;&nbsp;$23897304 |
| Standard Industries, Inc., 3.375%, 1/15/2031 (n) | &nbsp;&nbsp;19725000 | &nbsp;&nbsp;&nbsp;&nbsp; **17416349** |
| Vulcan Materials Co., 3.5%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;9570000 | &nbsp;&nbsp;&nbsp;&nbsp; **9069735** |
|  |  | &nbsp;&nbsp; **$50383388** |
| Business Services – 1.4% | Business Services – 1.4% | Business Services – 1.4% |
| Equinix, Inc., 1.8%, 7/15/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;9219000 | &nbsp;&nbsp;$8720832 |
| Equinix, Inc., 2.15%, 7/15/2030 | &nbsp;&nbsp;21402000 | &nbsp;&nbsp;&nbsp;&nbsp; **18931127** |
| Fiserv, Inc., 3.5%, 7/01/2029 | &nbsp;&nbsp;17324000 | &nbsp;&nbsp;&nbsp;&nbsp; **16511207** |
| Fiserv, Inc., 5.6%, 3/02/2033 | &nbsp;&nbsp;10033000 | &nbsp;&nbsp;&nbsp;&nbsp; **10218337** |
| Global Payments, Inc., 2.9%, 5/15/2030 | &nbsp;&nbsp;23523000 | &nbsp;&nbsp;&nbsp;&nbsp; **21185146** |
| Global Payments, Inc., 2.9%, 11/15/2031 | &nbsp;&nbsp;&nbsp;&nbsp;6885000 | &nbsp;&nbsp;&nbsp;&nbsp; **5974594** |
| Iron Mountain, Inc., 4.5%, 2/15/2031 (n) | &nbsp;&nbsp;35950000 | &nbsp;&nbsp;&nbsp;&nbsp; **33304842** |
|  |  | &nbsp;&nbsp; **$114846085** |
| Cable TV – 0.9% | Cable TV – 0.9% | Cable TV – 0.9% |
| CCO Holdings LLC/CCO Holdings Capital Corp., 4.5%, 8/15/2030 (n) | $&nbsp;&nbsp;29387000 | &nbsp;&nbsp;$27288304 |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 6.384%, 10/23/2035 | &nbsp;&nbsp;&nbsp;&nbsp;6428000 | &nbsp;&nbsp;&nbsp;&nbsp; **6506706** |
| Charter Communications Operating LLC/Charter Communications Operating Capital Corp., 5.25%, 4/01/2053 | &nbsp;&nbsp;35959000 | &nbsp;&nbsp;&nbsp;&nbsp; **28423732** |
| Time Warner Cable, Inc., 4.5%, 9/15/2042 | &nbsp;&nbsp;&nbsp;&nbsp;9503000 | &nbsp;&nbsp;&nbsp;&nbsp; **7116726** |
| Time Warner Entertainment Co. LP, 8.375%, 7/15/2033 | &nbsp;&nbsp;&nbsp;&nbsp;4688000 | &nbsp;&nbsp;&nbsp;&nbsp; **5336214** |
|  |  | &nbsp;&nbsp; **$74671682** |
| Computer Software – 0.3% | Computer Software – 0.3% | Computer Software – 0.3% |
| Dell International LLC/EMC Corp., 5.3%, 10/01/2029 | $&nbsp;&nbsp;24675000 | &nbsp;&nbsp;$25180788 |
| Computer Software - Systems – 0.3% | Computer Software - Systems – 0.3% | Computer Software - Systems – 0.3% |
| SS&C Technologies Holdings, Inc., 5.5%, 9/30/2027 (n) | $&nbsp;&nbsp;24371000 | &nbsp;&nbsp;$24250834 |
| Conglomerates – 0.9% | Conglomerates – 0.9% | Conglomerates – 0.9% |
| Regal Rexnord Corp., 6.05%, 4/15/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;6853000 | &nbsp;&nbsp;$7029564 |
| Regal Rexnord Corp., 6.3%, 2/15/2030 | &nbsp;&nbsp;24925000 | &nbsp;&nbsp;&nbsp;&nbsp; **25743130** |
| Regal Rexnord Corp., 6.4%, 4/15/2033 | &nbsp;&nbsp;16170000 | &nbsp;&nbsp;&nbsp;&nbsp; **16477290** |
| Westinghouse Air Brake Technologies Corp., 4.7%, 9/15/2028 | &nbsp;&nbsp;21336000 | &nbsp;&nbsp;&nbsp;&nbsp; **21401121** |
|  |  | &nbsp;&nbsp; **$70651105** |
| Consumer Products – 0.2% | Consumer Products – 0.2% | Consumer Products – 0.2% |
| Haleon US Capital LLC, 3.625%, 3/24/2032 | $&nbsp;&nbsp;15416000 | &nbsp;&nbsp;$14306593 |
| Consumer Services – 0.2% | Consumer Services – 0.2% | Consumer Services – 0.2% |
| CBRE Group, Inc., 5.95%, 8/15/2034 | $&nbsp;&nbsp;13799000 | &nbsp;&nbsp;$14253982 |
| Electrical Equipment – 0.4% | Electrical Equipment – 0.4% | Electrical Equipment – 0.4% |
| Arrow Electronics, Inc., 5.15%, 8/21/2029 | $&nbsp;&nbsp;11500000 | &nbsp;&nbsp;$11594105 |
| Arrow Electronics, Inc., 2.95%, 2/15/2032 | &nbsp;&nbsp;21913000 | &nbsp;&nbsp;&nbsp;&nbsp; **18786137** |
|  |  | &nbsp;&nbsp; **$30380242** |
| Electronics – 0.4% | Electronics – 0.4% | Electronics – 0.4% |
| Broadcom, Inc., 3.137%, 11/15/2035 (n) | $&nbsp;&nbsp;27875000 | &nbsp;&nbsp;$23096017 |
| Broadcom, Inc., 4.926%, 5/15/2037 (n) | &nbsp;&nbsp;12031000 | &nbsp;&nbsp;&nbsp;&nbsp; **11522639** |
|  |  | &nbsp;&nbsp; **$34618656** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Energy - Independent – 0.6% | Energy - Independent – 0.6% | Energy - Independent – 0.6% |
| EQT Corp., 3.9%, 10/01/2027 | $&nbsp;&nbsp;&nbsp;&nbsp;7896000 | &nbsp;&nbsp;$7745703 |
| EQT Corp., 5%, 1/15/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5901000 | &nbsp;&nbsp;&nbsp;&nbsp; **5902838** |
| EQT Corp., 3.625%, 5/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6884000 | &nbsp;&nbsp;&nbsp;&nbsp; **6304192** |
| Santos Finance Ltd., 6.875%, 9/19/2033 (n) | &nbsp;&nbsp;19092000 | &nbsp;&nbsp;&nbsp;&nbsp; **20119971** |
| Tengizchevroil Finance Co. International Ltd., 3.25%, 8/15/2030 | &nbsp;&nbsp;13596000 | &nbsp;&nbsp;&nbsp;&nbsp; **11851606** |
|  |  | &nbsp;&nbsp; **$51924310** |
| Energy - Integrated – 0.5% | Energy - Integrated – 0.5% | Energy - Integrated – 0.5% |
| Eni S.p.A., 4.25%, 5/09/2029 (n) | $&nbsp;&nbsp;13598000 | &nbsp;&nbsp;$13456034 |
| Eni S.p.A., 5.5%, 5/15/2034 (n) | &nbsp;&nbsp;27138000 | &nbsp;&nbsp;&nbsp;&nbsp; **26896122** |
|  |  | &nbsp;&nbsp; **$40352156** |
| Financial Institutions – 0.7% | Financial Institutions – 0.7% | Financial Institutions – 0.7% |
| AerCap Ireland Capital DAC/AerCap Global Aviation Trust, 6.5%, 7/15/2025 | $&nbsp;&nbsp;12700000 | &nbsp;&nbsp;$12718960 |
| AerCap Ireland Capital DAC/AerCap Global Aviation Trust, 3%, 10/29/2028 | &nbsp;&nbsp;10175000 | &nbsp;&nbsp;&nbsp;&nbsp; **9609625** |
| AerCap Ireland Capital DAC/AerCap Global Aviation Trust, 3.3%, 1/30/2032 | &nbsp;&nbsp;&nbsp;&nbsp;5012000 | &nbsp;&nbsp;&nbsp;&nbsp; **4428478** |
| Avolon Holdings Funding Ltd., 2.125%, 2/21/2026 (n) | &nbsp;&nbsp;12112000 | &nbsp;&nbsp;&nbsp;&nbsp; **11809672** |
| Avolon Holdings Funding Ltd., 4.25%, 4/15/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7451000 | &nbsp;&nbsp;&nbsp;&nbsp; **7383924** |
| Avolon Holdings Funding Ltd., 3.25%, 2/15/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7098000 | &nbsp;&nbsp;&nbsp;&nbsp; **6871705** |
| Avolon Holdings Funding Ltd., 2.528%, 11/18/2027 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5071000 | &nbsp;&nbsp;&nbsp;&nbsp; **4761068** |
| Avolon Holdings Funding Ltd., 2.75%, 2/21/2028 (n) | &nbsp;&nbsp;&nbsp;&nbsp;2074000 | &nbsp;&nbsp;&nbsp;&nbsp; **1943994** |
|  |  | &nbsp;&nbsp; **$59527426** |
| Food & Beverages – 0.6% | Food & Beverages – 0.6% | Food & Beverages – 0.6% |
| JBS USA Lux S.A./JBS USA Food Co./JBS USA Finance, Inc., 5.5%, 1/15/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;6616000 | &nbsp;&nbsp;$6717781 |
| Performance Food Group Co., 6.125%, 9/15/2032 (n) | &nbsp;&nbsp;19280000 | &nbsp;&nbsp;&nbsp;&nbsp; **19285726** |
| Post Holdings, Inc., 5.5%, 12/15/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6770000 | &nbsp;&nbsp;&nbsp;&nbsp; **6644775** |
| Post Holdings, Inc., 4.625%, 4/15/2030 (n) | &nbsp;&nbsp;10755000 | &nbsp;&nbsp;&nbsp;&nbsp; **10137717** |
| Post Holdings, Inc., 4.5%, 9/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4815000 | &nbsp;&nbsp;&nbsp;&nbsp; **4381838** |
|  |  | &nbsp;&nbsp; **$47167837** |
| Gaming & Lodging – 0.6% | Gaming & Lodging – 0.6% | Gaming & Lodging – 0.6% |
| Hilton Domestic Operating Co., Inc., 5.875%, 3/15/2033 (n) | $&nbsp;&nbsp;20412000 | &nbsp;&nbsp;$20401512 |
| Marriott International, Inc., 3.5%, 10/15/2032 | &nbsp;&nbsp;12991000 | &nbsp;&nbsp;&nbsp;&nbsp; **11549738** |
| Marriott International, Inc., 2.75%, 10/15/2033 | &nbsp;&nbsp;18167000 | &nbsp;&nbsp;&nbsp;&nbsp; **15017644** |
|  |  | &nbsp;&nbsp; **$46968894** |
| Insurance – 0.8% | Insurance – 0.8% | Insurance – 0.8% |
| Corebridge Financial, Inc., 3.9%, 4/05/2032 | $&nbsp;&nbsp;15987000 | &nbsp;&nbsp;$14719402 |
| Corebridge Financial, Inc., 5.75%, 1/15/2034 | &nbsp;&nbsp;13944000 | &nbsp;&nbsp;&nbsp;&nbsp; **14212236** |
| Corebridge Financial, Inc., 4.35%, 4/05/2042 | &nbsp;&nbsp;&nbsp;&nbsp;1846000 | &nbsp;&nbsp;&nbsp;&nbsp; **1506308** |
| Corebridge Financial, Inc., 4.4%, 4/05/2052 | &nbsp;&nbsp;&nbsp;&nbsp;5568000 | &nbsp;&nbsp;&nbsp;&nbsp; **4351668** |
| Sammons Financial Group, Inc., 6.875%, 4/15/2034 (n) | &nbsp;&nbsp;26615000 | &nbsp;&nbsp;&nbsp;&nbsp; **27798473** |
|  |  | &nbsp;&nbsp; **$62588087** |
| Insurance - Health – 0.2% | Insurance - Health – 0.2% | Insurance - Health – 0.2% |
| Humana, Inc., 5.875%, 3/01/2033 | $&nbsp;&nbsp;19625000 | &nbsp;&nbsp;$20097336 |
| Insurance - Property & Casualty – 1.1% | Insurance - Property & Casualty – 1.1% | Insurance - Property & Casualty – 1.1% |
| Ambac Assurance Corp., 5.1%, 6/07/2172 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13854 | &nbsp;&nbsp;$18772 |
| Brown & Brown, Inc., 4.2%, 3/17/2032 | &nbsp;&nbsp;15616000 | &nbsp;&nbsp;&nbsp;&nbsp; **14543583** |
| Brown & Brown, Inc., 4.95%, 3/17/2052 | &nbsp;&nbsp;&nbsp;&nbsp;5548000 | &nbsp;&nbsp;&nbsp;&nbsp; **4603794** |
| Fairfax Financial Holdings Ltd., 4.85%, 4/17/2028 | &nbsp;&nbsp;15409000 | &nbsp;&nbsp;&nbsp;&nbsp; **15525767** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Insurance - Property & Casualty – continued | Insurance - Property & Casualty – continued | Insurance - Property & Casualty – continued |
| Fairfax Financial Holdings Ltd., 3.375%, 3/03/2031 | $&nbsp;&nbsp;&nbsp;&nbsp;7257000 | &nbsp;&nbsp;$6606706 |
| Fairfax Financial Holdings Ltd., 5.625%, 8/16/2032 | &nbsp;&nbsp;16523000 | &nbsp;&nbsp;&nbsp;&nbsp; **16791725** |
| Hub International Ltd., 7.25%, 6/15/2030 (n) | &nbsp;&nbsp;22651000 | &nbsp;&nbsp;&nbsp;&nbsp; **23494591** |
| Liberty Mutual Group, Inc., 3.951%, 10/15/2050 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6950000 | &nbsp;&nbsp;&nbsp;&nbsp; **4967391** |
|  |  | &nbsp;&nbsp; **$86552329** |
| International Market Quasi-Sovereign – 0.1% | International Market Quasi-Sovereign – 0.1% | International Market Quasi-Sovereign – 0.1% |
| Electricite de France S.A., 6.9%, 5/23/2053 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;8776000 | &nbsp;&nbsp;$9254136 |
| Machinery & Tools – 0.4% | Machinery & Tools – 0.4% | Machinery & Tools – 0.4% |
| Ashtead Capital, Inc., 5.55%, 5/30/2033 (n) | $&nbsp;&nbsp;24388000 | &nbsp;&nbsp;$24125738 |
| Ashtead Capital, Inc., 5.8%, 4/15/2034 (n) | &nbsp;&nbsp;&nbsp;&nbsp;8473000 | &nbsp;&nbsp;&nbsp;&nbsp; **8488419** |
|  |  | &nbsp;&nbsp; **$32614157** |
| Major Banks – 7.3% | Major Banks – 7.3% | Major Banks – 7.3% |
| Bank of America Corp., 3.419% to 12/20/2027, FLR ((SOFR - 3mo. + 0.26161%) + 1.04%) to 12/20/2028 | $&nbsp;&nbsp;&nbsp;&nbsp;7070000 | &nbsp;&nbsp;$6876389 |
| Bank of America Corp., 3.97% to 3/05/2028, FLR ((SOFR - 3mo. + 0.26161%) + 1.07%) to 3/05/2029 | &nbsp;&nbsp;&nbsp;&nbsp;8931000 | &nbsp;&nbsp;&nbsp;&nbsp; **8805368** |
| Bank of America Corp., 2.496% to 2/13/2030, FLR ((SOFR - 3mo. + 0.26161%) + 0.99%) to 2/13/2031 | &nbsp;&nbsp;39891000 | &nbsp;&nbsp;&nbsp;&nbsp; **36108855** |
| Bank of America Corp., 2.572% to 10/20/2031, FLR (SOFR - 1 day + 1.21%) to 10/20/2032 | &nbsp;&nbsp;45881000 | &nbsp;&nbsp;&nbsp;&nbsp; **39871944** |
| Bank of America Corp., 5.875% to 3/15/2028, FLR ((SOFR - 3mo. + 0.26161%) + 2.931%) to 9/15/2171 | &nbsp;&nbsp;13771000 | &nbsp;&nbsp;&nbsp;&nbsp; **13627717** |
| Barclays PLC, 4.375%, 1/12/2026 | &nbsp;&nbsp;&nbsp;&nbsp;4820000 | &nbsp;&nbsp;&nbsp;&nbsp; **4808182** |
| Barclays PLC, 4.972% to 5/16/2028, FLR (LIBOR - 3mo. + 1.902%) to 5/16/2029 | &nbsp;&nbsp;&nbsp;&nbsp;7802000 | &nbsp;&nbsp;&nbsp;&nbsp; **7836201** |
| Barclays PLC, 2.894% to 11/24/2031, FLR (CMT - 1yr. + 1.3%) to 11/24/2032 | &nbsp;&nbsp;16966000 | &nbsp;&nbsp;&nbsp;&nbsp; **14756827** |
| Capital One Financial Corp., 5.817% to 2/01/2033, FLR (SOFR - 1 day + 2.6%) to 2/01/2034 | &nbsp;&nbsp;11000000 | &nbsp;&nbsp;&nbsp;&nbsp; **11099103** |
| Capital One Financial Corp., 6.377% to 6/08/2033, FLR (SOFR - 1 day + 2.86%) to 6/08/2034 | &nbsp;&nbsp;17390000 | &nbsp;&nbsp;&nbsp;&nbsp; **18140357** |
| Capital One Financial Corp., 6.051% to 2/01/2034, FLR (SOFR - 1 day + 2.26%) to 2/01/2035 | &nbsp;&nbsp;16122000 | &nbsp;&nbsp;&nbsp;&nbsp; **16479696** |
| Deutsche Bank AG, 2.311% to 11/16/2026, FLR (SOFR - 1 day + 1.219%) to 11/16/2027 | &nbsp;&nbsp;23182000 | &nbsp;&nbsp;&nbsp;&nbsp; **22321561** |
| Deutsche Bank AG, 6.72% to 1/18/2028, FLR (SOFR - 1 day + 3.18%) to 1/18/2029 | &nbsp;&nbsp;24629000 | &nbsp;&nbsp;&nbsp;&nbsp; **25825448** |
| Goldman Sachs Group, Inc., 2.6%, 2/07/2030 | &nbsp;&nbsp;15968000 | &nbsp;&nbsp;&nbsp;&nbsp; **14584307** |
| Goldman Sachs Group, Inc., 2.65% to 10/21/2031, FLR (SOFR - 1 day + 1.264%) to 10/21/2032 | &nbsp;&nbsp;26935000 | &nbsp;&nbsp;&nbsp;&nbsp; **23373276** |
| HSBC Holdings PLC, 4.7% to 9/09/2031, FLR (CMT - 1yr. + 3.25%) to 9/09/2169 | &nbsp;&nbsp;25500000 | &nbsp;&nbsp;&nbsp;&nbsp; **22420577** |
| HSBC Holdings PLC, 4% to 9/09/2026, FLR (CMT - 1yr. + 3.222%) to 9/09/2170 | &nbsp;&nbsp;10111000 | &nbsp;&nbsp;&nbsp;&nbsp; **9914382** |
| JPMorgan Chase & Co., 3.509%, 1/23/2029 | &nbsp;&nbsp;18395000 | &nbsp;&nbsp;&nbsp;&nbsp; **17948014** |
| JPMorgan Chase & Co., 4.005%, 4/23/2029 | &nbsp;&nbsp;28117000 | &nbsp;&nbsp;&nbsp;&nbsp; **27853235** |
| JPMorgan Chase & Co., 4.203% to 7/23/2028, FLR ((SOFR - 3mo. + 0.26161%) + 1.26%) to 7/23/2029 | &nbsp;&nbsp;&nbsp;&nbsp;9246000 | &nbsp;&nbsp;&nbsp;&nbsp; **9169602** |
| JPMorgan Chase & Co., 2.956% to 5/13/2030, FLR (SOFR - 1 day + 2.515%) to 5/13/2031 | &nbsp;&nbsp;&nbsp;&nbsp;7484000 | &nbsp;&nbsp;&nbsp;&nbsp; **6840247** |
| JPMorgan Chase & Co., 2.545% to 11/08/2031, FLR (SOFR - 1 day + 1.18%) to 11/08/2032 | &nbsp;&nbsp;29061000 | &nbsp;&nbsp;&nbsp;&nbsp; **25343532** |
| Lloyds Bank PLC, 3.75%, 1/11/2027 | &nbsp;&nbsp;&nbsp;&nbsp;3975000 | &nbsp;&nbsp;&nbsp;&nbsp; **3929612** |
| Mitsubishi UFJ Financial Group, Inc., 2.048%, 7/17/2030 | &nbsp;&nbsp;31223000 | &nbsp;&nbsp;&nbsp;&nbsp; **27376944** |
| Morgan Stanley, 3.125%, 7/27/2026 | &nbsp;&nbsp;12844000 | &nbsp;&nbsp;&nbsp;&nbsp; **12663564** |
| Morgan Stanley, 5.449% to 7/20/2028, FLR (SOFR - 1 day + 1.63%) to 7/20/2029 | &nbsp;&nbsp;&nbsp;&nbsp;5819000 | &nbsp;&nbsp;&nbsp;&nbsp; **5973662** |
| Morgan Stanley, 2.699% to 1/22/2030, FLR (SOFR - 1 day + 1.143%) to 1/22/2031 | &nbsp;&nbsp;&nbsp;&nbsp;7037000 | &nbsp;&nbsp;&nbsp;&nbsp; **6427674** |
| Morgan Stanley, 2.511% to 10/20/2031, FLR (SOFR - 1 day + 1.2%) to 10/20/2032 | &nbsp;&nbsp;19284000 | &nbsp;&nbsp;&nbsp;&nbsp; **16649579** |
| Morgan Stanley, 5.424% to 7/21/2033, FLR (SOFR - 1 day + 1.88%) to 7/21/2034 | &nbsp;&nbsp;13809000 | &nbsp;&nbsp;&nbsp;&nbsp; **13954253** |
| NatWest Group PLC, 6.016% to 3/02/2033, FLR (CMT - 1yr. + 2.1%) to 3/02/2034 | &nbsp;&nbsp;&nbsp;&nbsp;3536000 | &nbsp;&nbsp;&nbsp;&nbsp; **3684252** |
| Sumitomo Mitsui Financial Group, Inc., 2.13%, 7/08/2030 | &nbsp;&nbsp;38002000 | &nbsp;&nbsp;&nbsp;&nbsp; **33554557** |
| UBS Group AG, 4.375% to 2/10/2031, FLR (CMT - 1yr. + 3.313%) to 8/10/2171 (n) | &nbsp;&nbsp;30010000 | &nbsp;&nbsp;&nbsp;&nbsp; **25698748** |
| UBS Group Funding (Jersey) Ltd., 4.125%, 9/24/2025 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6610000 | &nbsp;&nbsp;&nbsp;&nbsp; **6592266** |
| UBS Group Funding (Switzerland) AG, 4.253%, 3/23/2028 (n) | &nbsp;&nbsp;10491000 | &nbsp;&nbsp;&nbsp;&nbsp; **10399896** |
| Wells Fargo & Co., 2.572% to 2/11/2030, FLR ((SOFR - 3mo. + 0.26161%) + 1%) to 2/11/2031 | &nbsp;&nbsp;45462000 | &nbsp;&nbsp;&nbsp;&nbsp; **41197420** |
|  |  | &nbsp;&nbsp; **$592107247** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Medical & Health Technology & Services – 1.7% | Medical & Health Technology & Services – 1.7% | Medical & Health Technology & Services – 1.7% |
| Adventist Health System/West, 5.43%, 3/01/2032 | $&nbsp;&nbsp;21168000 | &nbsp;&nbsp;$21313644 |
| Alcon Finance Corp., 2.75%, 9/23/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;4432000 | &nbsp;&nbsp;&nbsp;&nbsp; **4313994** |
| Alcon Finance Corp., 3%, 9/23/2029 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7500000 | &nbsp;&nbsp;&nbsp;&nbsp; **6987223** |
| Alcon Finance Corp., 2.6%, 5/27/2030 (n) | &nbsp;&nbsp;&nbsp;&nbsp;7998000 | &nbsp;&nbsp;&nbsp;&nbsp; **7201022** |
| Alcon Finance Corp., 5.375%, 12/06/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;6013000 | &nbsp;&nbsp;&nbsp;&nbsp; **6086654** |
| HCA, Inc., 4.125%, 6/15/2029 | &nbsp;&nbsp;10042000 | &nbsp;&nbsp;&nbsp;&nbsp; **9768728** |
| HCA, Inc., 4.375%, 3/15/2042 | &nbsp;&nbsp;14385000 | &nbsp;&nbsp;&nbsp;&nbsp; **11710215** |
| ICON Investments Six DAC, 6%, 5/08/2034 | &nbsp;&nbsp;13573000 | &nbsp;&nbsp;&nbsp;&nbsp; **13552829** |
| Marin General Hospital, 7.242%, 8/01/2045 | &nbsp;&nbsp;10530000 | &nbsp;&nbsp;&nbsp;&nbsp; **11909579** |
| Northwell Healthcare, Inc., 3.979%, 11/01/2046 | &nbsp;&nbsp;&nbsp;&nbsp;3110000 | &nbsp;&nbsp;&nbsp;&nbsp; **2357641** |
| Northwell Healthcare, Inc., 4.26%, 11/01/2047 | &nbsp;&nbsp;&nbsp;&nbsp;9132000 | &nbsp;&nbsp;&nbsp;&nbsp; **7131766** |
| ProMedica Toledo Hospital, "B", 5.325%, 11/15/2028 | &nbsp;&nbsp;23983000 | &nbsp;&nbsp;&nbsp;&nbsp; **23084837** |
| ProMedica Toledo Hospital, "B", AGM, 5.75%, 11/15/2038 | &nbsp;&nbsp;&nbsp;&nbsp;9026000 | &nbsp;&nbsp;&nbsp;&nbsp; **8983435** |
|  |  | &nbsp;&nbsp; **$134401567** |
| Medical Equipment – 0.2% | Medical Equipment – 0.2% | Medical Equipment – 0.2% |
| Medline Borrower LP/Medline Co-Issuer, Inc., 6.25%, 4/01/2029 (n) | $&nbsp;&nbsp;13568000 | &nbsp;&nbsp;$13671836 |
| Metals & Mining – 1.3% | Metals & Mining – 1.3% | Metals & Mining – 1.3% |
| Anglo American Capital PLC, 3.875%, 3/16/2029 (n) | $&nbsp;&nbsp;16098000 | &nbsp;&nbsp;$15587238 |
| Anglo American Capital PLC, 2.875%, 3/17/2031 (n) | &nbsp;&nbsp;12521000 | &nbsp;&nbsp;&nbsp;&nbsp; **11127475** |
| Anglo American Capital PLC, 4.75%, 3/16/2052 (n) | &nbsp;&nbsp;20205000 | &nbsp;&nbsp;&nbsp;&nbsp; **16506127** |
| FMG Resources Ltd., 4.375%, 4/01/2031 (n) | &nbsp;&nbsp;27408000 | &nbsp;&nbsp;&nbsp;&nbsp; **24805106** |
| Glencore Funding LLC, 2.85%, 4/27/2031 (n) | &nbsp;&nbsp;17296000 | &nbsp;&nbsp;&nbsp;&nbsp; **15379449** |
| Novelis, Inc., 3.875%, 8/15/2031 (n) | &nbsp;&nbsp;26583000 | &nbsp;&nbsp;&nbsp;&nbsp; **22943293** |
|  |  | &nbsp;&nbsp; **$106348688** |
| Midstream – 2.4% | Midstream – 2.4% | Midstream – 2.4% |
| Cheniere Corpus Christi Holdings LLC, 2.742%, 12/31/2039 | $&nbsp;&nbsp;&nbsp;&nbsp;8291000 | &nbsp;&nbsp;$6547432 |
| Enbridge, Inc., 4.25%, 12/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;9961000 | &nbsp;&nbsp;&nbsp;&nbsp; **9924713** |
| Enbridge, Inc., 5.7%, 3/08/2033 | &nbsp;&nbsp;&nbsp;&nbsp;8233000 | &nbsp;&nbsp;&nbsp;&nbsp; **8402906** |
| Energy Transfer LP, 5.55%, 2/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;5763000 | &nbsp;&nbsp;&nbsp;&nbsp; **5906310** |
| Energy Transfer LP, 5.75%, 2/15/2033 | &nbsp;&nbsp;26373000 | &nbsp;&nbsp;&nbsp;&nbsp; **26743201** |
| Kinder Morgan (Delaware), Inc., 7.75%, 1/15/2032 | &nbsp;&nbsp;&nbsp;&nbsp;7347000 | &nbsp;&nbsp;&nbsp;&nbsp; **8331863** |
| Kinder Morgan Energy Partners LP, 6.375%, 3/01/2041 | &nbsp;&nbsp;&nbsp;&nbsp;6112000 | &nbsp;&nbsp;&nbsp;&nbsp; **6170592** |
| Kinder Morgan Energy Partners LP, 5.4%, 9/01/2044 | &nbsp;&nbsp;&nbsp;&nbsp;7661000 | &nbsp;&nbsp;&nbsp;&nbsp; **6872820** |
| MPLX LP, 4.95%, 3/14/2052 | &nbsp;&nbsp;27389000 | &nbsp;&nbsp;&nbsp;&nbsp; **21999808** |
| Plains All American Pipeline LP, 3.55%, 12/15/2029 | &nbsp;&nbsp;33187000 | &nbsp;&nbsp;&nbsp;&nbsp; **31396619** |
| Targa Resources Corp., 4.2%, 2/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;4099000 | &nbsp;&nbsp;&nbsp;&nbsp; **3743235** |
| Targa Resources Corp., 6.125%, 3/15/2033 | &nbsp;&nbsp;24189000 | &nbsp;&nbsp;&nbsp;&nbsp; **24892284** |
| Targa Resources Corp., 4.95%, 4/15/2052 | &nbsp;&nbsp;&nbsp;&nbsp;8758000 | &nbsp;&nbsp;&nbsp;&nbsp; **7052716** |
| Venture Global Calcasieu Pass LLC, 6.25%, 1/15/2030 (n) | &nbsp;&nbsp;24120000 | &nbsp;&nbsp;&nbsp;&nbsp; **24126633** |
|  |  | &nbsp;&nbsp; **$192111132** |
| Mortgage-Backed – 18.2% | Mortgage-Backed – 18.2% |  |
| Fannie Mae, 4.5%, 5/01/2025 - 6/01/2044 | $&nbsp;&nbsp;17243638 | &nbsp;&nbsp;$17067628 |
| Fannie Mae, 2.636%, 12/25/2026 | &nbsp;&nbsp;&nbsp;&nbsp;7488576 | &nbsp;&nbsp;&nbsp;&nbsp; **7306920** |
| Fannie Mae, 3.95%, 1/01/2027 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;547230 | &nbsp;&nbsp;&nbsp;&nbsp; **547069** |
| Fannie Mae, 3.5%, 1/01/2028 - 12/01/2047 | &nbsp;&nbsp;24203201 | &nbsp;&nbsp;&nbsp;&nbsp; **22574375** |
| Fannie Mae, 3%, 11/01/2028 - 11/01/2048 | &nbsp;&nbsp;22763550 | &nbsp;&nbsp;&nbsp;&nbsp; **20489831** |
| Fannie Mae, 2.5%, 11/01/2031 - 11/01/2046 | &nbsp;&nbsp;&nbsp;&nbsp;2242587 | &nbsp;&nbsp;&nbsp;&nbsp; **1938277** |
| Fannie Mae, 6.5%, 11/01/2031 - 1/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31889 | &nbsp;&nbsp;&nbsp;&nbsp; **32942** |
| Fannie Mae, 3%, 2/25/2033 (i) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;792592 | &nbsp;&nbsp;&nbsp;&nbsp; **56551** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Mortgage-Backed – continued | Mortgage-Backed – continued |  |
| Fannie Mae, 5.5%, 3/01/2033 - 12/01/2038 | $&nbsp;&nbsp;&nbsp;&nbsp;3221737 | &nbsp;&nbsp;$3315275 |
| Fannie Mae, 5%, 11/01/2033 - 3/01/2042 | &nbsp;&nbsp;&nbsp;&nbsp;3638738 | &nbsp;&nbsp;&nbsp;&nbsp; **3672093** |
| Fannie Mae, 6%, 5/01/2034 - 10/01/2038 | &nbsp;&nbsp;&nbsp;&nbsp;1355964 | &nbsp;&nbsp;&nbsp;&nbsp; **1412608** |
| Fannie Mae, 3.25%, 5/25/2040 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;249230 | &nbsp;&nbsp;&nbsp;&nbsp; **237994** |
| Fannie Mae, 4%, 9/01/2040 - 12/01/2048 | &nbsp;&nbsp;30142711 | &nbsp;&nbsp;&nbsp;&nbsp; **29042231** |
| Fannie Mae, 2%, 4/25/2046 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;508384 | &nbsp;&nbsp;&nbsp;&nbsp; **472591** |
| Fannie Mae, 4%, 7/25/2046 (i) | &nbsp;&nbsp;&nbsp;&nbsp;1043357 | &nbsp;&nbsp;&nbsp;&nbsp; **194851** |
| Fannie Mae, UMBS, 2.5%, 7/01/2036 - 6/01/2053 | 218456623 | &nbsp;&nbsp;&nbsp;&nbsp; **184560129** |
| Fannie Mae, UMBS, 3%, 8/01/2036 - 10/01/2053 | &nbsp;&nbsp;62283600 | &nbsp;&nbsp;&nbsp;&nbsp; **54386409** |
| Fannie Mae, UMBS, 2%, 2/01/2037 - 10/01/2052 | 144256735 | &nbsp;&nbsp;&nbsp;&nbsp; **119366237** |
| Fannie Mae, UMBS, 1.5%, 9/01/2041 - 2/01/2042 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;903337 | &nbsp;&nbsp;&nbsp;&nbsp; **743202** |
| Fannie Mae, UMBS, 5.5%, 5/01/2044 - 10/01/2053 | &nbsp;&nbsp;26725658 | &nbsp;&nbsp;&nbsp;&nbsp; **26770056** |
| Fannie Mae, UMBS, 3.5%, 5/01/2049 - 6/01/2053 | &nbsp;&nbsp;24782521 | &nbsp;&nbsp;&nbsp;&nbsp; **22425100** |
| Fannie Mae, UMBS, 4.5%, 7/01/2052 - 3/01/2055 | &nbsp;&nbsp;24658481 | &nbsp;&nbsp;&nbsp;&nbsp; **23622951** |
| Fannie Mae, UMBS, 5%, 8/01/2052 - 12/01/2054 | &nbsp;&nbsp;36973732 | &nbsp;&nbsp;&nbsp;&nbsp; **36287656** |
| Fannie Mae, UMBS, 6.5%, 8/01/2053 - 12/01/2053 | &nbsp;&nbsp;&nbsp;&nbsp;1024640 | &nbsp;&nbsp;&nbsp;&nbsp; **1058162** |
| Fannie Mae, UMBS, 6%, 11/01/2053 - 10/01/2054 | &nbsp;&nbsp;16540219 | &nbsp;&nbsp;&nbsp;&nbsp; **16795352** |
| Freddie Mac, 4%, 7/01/2025 - 4/01/2044 | &nbsp;&nbsp;&nbsp;&nbsp;3242515 | &nbsp;&nbsp;&nbsp;&nbsp; **3129349** |
| Freddie Mac, 4.5%, 7/01/2025 - 5/01/2042 | &nbsp;&nbsp;&nbsp;&nbsp;4019163 | &nbsp;&nbsp;&nbsp;&nbsp; **3987798** |
| Freddie Mac, 3.3%, 10/25/2026 | &nbsp;&nbsp;&nbsp;&nbsp;4957000 | &nbsp;&nbsp;&nbsp;&nbsp; **4895089** |
| Freddie Mac, 3.117%, 6/25/2027 | &nbsp;&nbsp;17177017 | &nbsp;&nbsp;&nbsp;&nbsp; **16862736** |
| Freddie Mac, 3%, 6/15/2028 - 2/25/2059 | &nbsp;&nbsp;19753768 | &nbsp;&nbsp;&nbsp;&nbsp; **17723129** |
| Freddie Mac, 4.06%, 10/25/2028 | &nbsp;&nbsp;&nbsp;&nbsp;5001000 | &nbsp;&nbsp;&nbsp;&nbsp; **4993934** |
| Freddie Mac, 1.214%, 7/25/2029 (i) | &nbsp;&nbsp;12412236 | &nbsp;&nbsp;&nbsp;&nbsp; **481066** |
| Freddie Mac, 1.262%, 8/25/2029 (i) | &nbsp;&nbsp;21964044 | &nbsp;&nbsp;&nbsp;&nbsp; **912621** |
| Freddie Mac, 1.955%, 4/25/2030 (i) | &nbsp;&nbsp;&nbsp;&nbsp;6415004 | &nbsp;&nbsp;&nbsp;&nbsp; **507494** |
| Freddie Mac, 5.5%, 8/01/2033 - 1/01/2038 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;727513 | &nbsp;&nbsp;&nbsp;&nbsp; **745403** |
| Freddie Mac, 6%, 11/01/2033 - 7/01/2038 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;441436 | &nbsp;&nbsp;&nbsp;&nbsp; **457554** |
| Freddie Mac, 5%, 11/01/2035 - 11/01/2054 | &nbsp;&nbsp;&nbsp;&nbsp;2562812 | &nbsp;&nbsp;&nbsp;&nbsp; **2563404** |
| Freddie Mac, 5.5%, 2/15/2036 (i) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;179312 | &nbsp;&nbsp;&nbsp;&nbsp; **28968** |
| Freddie Mac, 3.5%, 11/01/2037 - 10/25/2058 | &nbsp;&nbsp;15353804 | &nbsp;&nbsp;&nbsp;&nbsp; **14321174** |
| Freddie Mac, 4.5%, 12/15/2040 (i) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;74750 | &nbsp;&nbsp;&nbsp;&nbsp; **6965** |
| Freddie Mac, 4%, 8/15/2044 (i) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;174617 | &nbsp;&nbsp;&nbsp;&nbsp; **15969** |
| Freddie Mac, UMBS, 3%, 11/01/2034 - 3/01/2053 | &nbsp;&nbsp;48426938 | &nbsp;&nbsp;&nbsp;&nbsp; **42979925** |
| Freddie Mac, UMBS, 2%, 9/01/2036 - 8/01/2052 | 169146290 | &nbsp;&nbsp;&nbsp;&nbsp; **135282813** |
| Freddie Mac, UMBS, 5%, 8/01/2037 - 12/01/2054 | &nbsp;&nbsp;18265268 | &nbsp;&nbsp;&nbsp;&nbsp; **17902844** |
| Freddie Mac, UMBS, 2.5%, 8/01/2040 - 10/01/2053 | &nbsp;&nbsp;56159883 | &nbsp;&nbsp;&nbsp;&nbsp; **47028834** |
| Freddie Mac, UMBS, 6.5%, 5/01/2043 - 7/01/2054 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;676954 | &nbsp;&nbsp;&nbsp;&nbsp; **700230** |
| Freddie Mac, UMBS, 3.5%, 12/01/2046 - 12/01/2053 | &nbsp;&nbsp;49434397 | &nbsp;&nbsp;&nbsp;&nbsp; **44710153** |
| Freddie Mac, UMBS, 4.5%, 7/01/2052 - 3/01/2055 | &nbsp;&nbsp;12374168 | &nbsp;&nbsp;&nbsp;&nbsp; **11849493** |
| Freddie Mac, UMBS, 5.5%, 11/01/2052 - 10/01/2054 | &nbsp;&nbsp;14211676 | &nbsp;&nbsp;&nbsp;&nbsp; **14232373** |
| Freddie Mac, UMBS, 6%, 9/01/2053 - 8/01/2054 | &nbsp;&nbsp;37099834 | &nbsp;&nbsp;&nbsp;&nbsp; **37662400** |
| Ginnie Mae, 5.5%, 11/15/2032 - 1/20/2055 | &nbsp;&nbsp;28583213 | &nbsp;&nbsp;&nbsp;&nbsp; **28632314** |
| Ginnie Mae, 6%, 2/15/2034 - 1/15/2038 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;431671 | &nbsp;&nbsp;&nbsp;&nbsp; **446348** |
| Ginnie Mae, 4.5%, 4/15/2039 - 12/20/2052 | &nbsp;&nbsp;57939445 | &nbsp;&nbsp;&nbsp;&nbsp; **55920575** |
| Ginnie Mae, 4%, 10/20/2040 - 10/20/2052 | &nbsp;&nbsp;36721910 | &nbsp;&nbsp;&nbsp;&nbsp; **34374204** |
| Ginnie Mae, 3.5%, 11/15/2040 - 6/20/2052 | &nbsp;&nbsp;40034742 | &nbsp;&nbsp;&nbsp;&nbsp; **36582622** |
| Ginnie Mae, 3%, 11/20/2044 - 11/20/2052 | &nbsp;&nbsp;59481413 | &nbsp;&nbsp;&nbsp;&nbsp; **52868310** |
| Ginnie Mae, 2.5%, 8/20/2051 - 6/20/2052 | &nbsp;&nbsp;71755292 | &nbsp;&nbsp;&nbsp;&nbsp; **61162091** |
| Ginnie Mae, 2%, 1/20/2052 - 10/20/2053 | &nbsp;&nbsp;50725423 | &nbsp;&nbsp;&nbsp;&nbsp; **41389760** |
| Ginnie Mae, 5%, 12/20/2052 - 12/20/2054 | &nbsp;&nbsp;66145359 | &nbsp;&nbsp;&nbsp;&nbsp; **65000093** |
| Ginnie Mae, 6.5%, 7/20/2054 - 8/20/2054 | &nbsp;&nbsp;&nbsp;&nbsp;7695344 | &nbsp;&nbsp;&nbsp;&nbsp; **7873320** |
| Ginnie Mae, TBA, 5.5%, 5/15/2055 | &nbsp;&nbsp;14600000 | &nbsp;&nbsp;&nbsp;&nbsp; **14592186** |
| UMBS, TBA, 2%, 5/25/2040 | &nbsp;&nbsp;12425000 | &nbsp;&nbsp;&nbsp;&nbsp; **11284730** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Mortgage-Backed – continued | Mortgage-Backed – continued |  |
| UMBS, TBA, 2.5%, 5/25/2040 - 6/25/2055 | $&nbsp;&nbsp;23975000 | &nbsp;&nbsp;$21012339 |
| UMBS, TBA, 4%, 5/25/2055 | &nbsp;&nbsp;11075000 | &nbsp;&nbsp;&nbsp;&nbsp; **10320172** |
| UMBS, TBA, 3%, 6/25/2055 | &nbsp;&nbsp;&nbsp;&nbsp;4150000 | &nbsp;&nbsp;&nbsp;&nbsp; **3601613** |
| UMBS, TBA, 6.5%, 6/25/2055 | &nbsp;&nbsp;&nbsp;&nbsp;5375000 | &nbsp;&nbsp;&nbsp;&nbsp; **5530182** |
|  |  | &nbsp;&nbsp;$1468949067 |
| Municipals – 1.0% | Municipals – 1.0% | Municipals – 1.0% |
| Berks County, PA, Municipal Authority Rev. (Tower Health Project), "A-4", 7%, 6/30/2039 | $&nbsp;&nbsp;15461000 | &nbsp;&nbsp;$13438485 |
| Berks County, PA, Municipal Authority Rev. (Tower Health Project), Convertible Capital Appreciation, "B-2", 0% to 11/15/2029, 8% to 6/30/2044 | &nbsp;&nbsp;&nbsp;&nbsp;8128000 | &nbsp;&nbsp;&nbsp;&nbsp; **4581790** |
| Bridgeview, IL, Stadium & Redevelopment Projects, Taxable, AAC, 5.06%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;580000 | &nbsp;&nbsp;&nbsp;&nbsp; **578761** |
| Bridgeview, IL, Stadium and Redevelopment Projects, Taxable, AAC, 5.14%, 12/01/2036 | &nbsp;&nbsp;24325000 | &nbsp;&nbsp;&nbsp;&nbsp; **22223181** |
| Escambia County, FL, Health Facilities Authority Rev., Taxable (Baptist Health Care Corp.), "B", AGM, 3.607%, 8/15/2040 | &nbsp;&nbsp;&nbsp;&nbsp;4565000 | &nbsp;&nbsp;&nbsp;&nbsp; **3638876** |
| Oklahoma Development Finance Authority, Health System Rev., Taxable (OU Medicine Project), "C", 5.45%, 8/15/2028 | &nbsp;&nbsp;&nbsp;&nbsp;9717000 | &nbsp;&nbsp;&nbsp;&nbsp; **9611131** |
| Philadelphia, PA, School District, Taxable, "B", AGM, 6.615%, 6/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;6320000 | &nbsp;&nbsp;&nbsp;&nbsp; **6674303** |
| State of Florida, Taxable, "A", 2.154%, 7/01/2030 | &nbsp;&nbsp;21024000 | &nbsp;&nbsp;&nbsp;&nbsp; **18727944** |
|  |  | &nbsp;&nbsp; **$79474471** |
| Natural Gas - Distribution – 0.6% | Natural Gas - Distribution – 0.6% | Natural Gas - Distribution – 0.6% |
| Boston Gas Co., 3.15%, 8/01/2027 (n) | $&nbsp;&nbsp;18261000 | &nbsp;&nbsp;$17764495 |
| KeySpan Gas East Corp., 2.742%, 8/15/2026 (n) | &nbsp;&nbsp;13855000 | &nbsp;&nbsp;&nbsp;&nbsp; **13547004** |
| NiSource, Inc., 3.6%, 5/01/2030 | &nbsp;&nbsp;16331000 | &nbsp;&nbsp;&nbsp;&nbsp; **15576205** |
|  |  | &nbsp;&nbsp; **$46887704** |
| Natural Gas - Pipeline – 0.1% | Natural Gas - Pipeline – 0.1% | Natural Gas - Pipeline – 0.1% |
| APA Infrastructure Ltd., 5.125%, 9/16/2034 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;8531000 | &nbsp;&nbsp;$8255603 |
| Oils – 0.0% | Oils – 0.0% | Oils – 0.0% |
| Marathon Petroleum Corp., 5.85%, 12/15/2045 | $&nbsp;&nbsp;&nbsp;&nbsp;4349000 | &nbsp;&nbsp;$3985875 |
| Other Banks & Diversified Financials – 1.3% | Other Banks & Diversified Financials – 1.3% | Other Banks & Diversified Financials – 1.3% |
| Discover Financial Services, 6.7%, 11/29/2032 | $&nbsp;&nbsp;34164000 | &nbsp;&nbsp;$36432670 |
| Macquarie Bank Ltd. of London, 6.125% to 3/08/2027, FLR (Swap Rate - 5yr. + 4.332%) to 12/31/2165 (n) | &nbsp;&nbsp;23323000 | &nbsp;&nbsp;&nbsp;&nbsp; **23209205** |
| Macquarie Group Ltd., 4.442% to 6/21/2032, FLR (SOFR - 1 day + 2.405%) to 6/21/2033 (n) | &nbsp;&nbsp;47217000 | &nbsp;&nbsp;&nbsp;&nbsp; **44490784** |
|  |  | &nbsp;&nbsp; **$104132659** |
| Pharmaceuticals – 0.2% | Pharmaceuticals – 0.2% | Pharmaceuticals – 0.2% |
| Organon Finance 1 LLC, 4.125%, 4/30/2028 (n) | $&nbsp;&nbsp;20486000 | &nbsp;&nbsp;$19321752 |
| Real Estate - Office – 0.7% | Real Estate - Office – 0.7% | Real Estate - Office – 0.7% |
| Boston Properties LP, REIT, 2.55%, 4/01/2032 | $&nbsp;&nbsp;29885000 | &nbsp;&nbsp;$24590189 |
| Boston Properties LP, REIT, 2.45%, 10/01/2033 | &nbsp;&nbsp;27176000 | &nbsp;&nbsp;&nbsp;&nbsp; **21267364** |
| Boston Properties LP, REIT, 5.75%, 1/15/2035 | &nbsp;&nbsp;14052000 | &nbsp;&nbsp;&nbsp;&nbsp; **13858356** |
|  |  | &nbsp;&nbsp; **$59715909** |
| Real Estate - Retail – 0.3% | Real Estate - Retail – 0.3% | Real Estate - Retail – 0.3% |
| Brixmor Operating Partnership LP, 5.75%, 2/15/2035 | $&nbsp;&nbsp;24974000 | &nbsp;&nbsp;$25273241 |
| Restaurants – 0.2% | Restaurants – 0.2% | Restaurants – 0.2% |
| 1011778 B.C. ULC/New Red Finance, Inc., 6.125%, 6/15/2029 (n) | $&nbsp;&nbsp;18567000 | &nbsp;&nbsp;$18860637 |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| Retailers – 0.4% | Retailers – 0.4% | Retailers – 0.4% |
| Penske Automotive Group Co., 3.75%, 6/15/2029 | $&nbsp;&nbsp;34558000 | &nbsp;&nbsp;$32039327 |
| Specialty Stores – 0.3% | Specialty Stores – 0.3% | Specialty Stores – 0.3% |
| DICK'S Sporting Goods, 3.15%, 1/15/2032 | $&nbsp;&nbsp;23293000 | &nbsp;&nbsp;$20398741 |
| Telecommunications - Wireless – 1.2% | Telecommunications - Wireless – 1.2% | Telecommunications - Wireless – 1.2% |
| Rogers Communications, Inc., 4.5%, 3/15/2042 | $&nbsp;&nbsp;27147000 | &nbsp;&nbsp;$22745218 |
| Rogers Communications, Inc., 4.55%, 3/15/2052 | &nbsp;&nbsp;27147000 | &nbsp;&nbsp;&nbsp;&nbsp; **21421565** |
| SBA Communications Corp., 3.125%, 2/01/2029 | &nbsp;&nbsp;17490000 | &nbsp;&nbsp;&nbsp;&nbsp; **16204037** |
| T-Mobile USA, Inc., 2.55%, 2/15/2031 | &nbsp;&nbsp;28722000 | &nbsp;&nbsp;&nbsp;&nbsp; **25486342** |
| T-Mobile USA, Inc., 4.375%, 4/15/2040 | &nbsp;&nbsp;&nbsp;&nbsp;2343000 | &nbsp;&nbsp;&nbsp;&nbsp; **2045741** |
| Vodafone Group PLC, 5.625%, 2/10/2053 | &nbsp;&nbsp;&nbsp;&nbsp;6121000 | &nbsp;&nbsp;&nbsp;&nbsp; **5677458** |
|  |  | &nbsp;&nbsp; **$93580361** |
| Tobacco – 1.1% | Tobacco – 1.1% | Tobacco – 1.1% |
| B.A.T. Capital Corp., 4.906%, 4/02/2030 | $&nbsp;&nbsp;&nbsp;&nbsp;2485000 | &nbsp;&nbsp;$2497605 |
| B.A.T. Capital Corp., 4.742%, 3/16/2032 | &nbsp;&nbsp;26499000 | &nbsp;&nbsp;&nbsp;&nbsp; **25844933** |
| B.A.T. International Finance PLC, 4.448%, 3/16/2028 | &nbsp;&nbsp;23935000 | &nbsp;&nbsp;&nbsp;&nbsp; **23962553** |
| Philip Morris International, Inc., 5.125%, 11/17/2027 | &nbsp;&nbsp;&nbsp;&nbsp;9958000 | &nbsp;&nbsp;&nbsp;&nbsp; **10170162** |
| Philip Morris International, Inc., 5.625%, 11/17/2029 | &nbsp;&nbsp;&nbsp;&nbsp;4291000 | &nbsp;&nbsp;&nbsp;&nbsp; **4497232** |
| Philip Morris International, Inc., 5.125%, 2/15/2030 | &nbsp;&nbsp;17478000 | &nbsp;&nbsp;&nbsp;&nbsp; **17928745** |
|  |  | &nbsp;&nbsp; **$84901230** |
| Transportation - Services – 0.4% | Transportation - Services – 0.4% | Transportation - Services – 0.4% |
| ERAC USA Finance LLC, 7%, 10/15/2037 (n) | $&nbsp;&nbsp;&nbsp;&nbsp;9094000 | &nbsp;&nbsp;$10369963 |
| Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2026 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5237000 | &nbsp;&nbsp;&nbsp;&nbsp; **4985105** |
| Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2029 (n) | &nbsp;&nbsp;15190000 | &nbsp;&nbsp;&nbsp;&nbsp; **11403647** |
| Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2031 (n) | &nbsp;&nbsp;&nbsp;&nbsp;5237000 | &nbsp;&nbsp;&nbsp;&nbsp; **3518883** |
| Toll Road Investors Partnership II LP, Capital Appreciation, NPFG, 0%, 2/15/2043 (n) | &nbsp;&nbsp;15587835 | &nbsp;&nbsp;&nbsp;&nbsp; **4928561** |
|  |  | &nbsp;&nbsp; **$35206159** |
| U.S. Government Agencies and Equivalents – 0.1% | U.S. Government Agencies and Equivalents – 0.1% | U.S. Government Agencies and Equivalents – 0.1% |
| Small Business Administration, 4.57%, 6/01/2025 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10848 | &nbsp;&nbsp;$10845 |
| Small Business Administration, 4.76%, 9/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;34993 | &nbsp;&nbsp;&nbsp;&nbsp; **34824** |
| Small Business Administration, 5.39%, 12/01/2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4370 | &nbsp;&nbsp;&nbsp;&nbsp; **4367** |
| Small Business Administration, 5.35%, 2/01/2026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24539 | &nbsp;&nbsp;&nbsp;&nbsp; **24552** |
| Small Business Administration, 3.25%, 11/01/2030 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;416213 | &nbsp;&nbsp;&nbsp;&nbsp; **406781** |
| Small Business Administration, 2.85%, 9/01/2031 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;670481 | &nbsp;&nbsp;&nbsp;&nbsp; **641604** |
| Small Business Administration, 2.37%, 8/01/2032 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;455776 | &nbsp;&nbsp;&nbsp;&nbsp; **431403** |
| Small Business Administration, 2.13%, 1/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;932233 | &nbsp;&nbsp;&nbsp;&nbsp; **870967** |
| Small Business Administration, 2.21%, 2/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;231238 | &nbsp;&nbsp;&nbsp;&nbsp; **217299** |
| Small Business Administration, 2.22%, 3/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;717744 | &nbsp;&nbsp;&nbsp;&nbsp; **671379** |
| Small Business Administration, 2.08%, 4/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;1423937 | &nbsp;&nbsp;&nbsp;&nbsp; **1316441** |
| Small Business Administration, 2.45%, 6/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;1680639 | &nbsp;&nbsp;&nbsp;&nbsp; **1583092** |
| Small Business Administration, 3.15%, 7/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;1947788 | &nbsp;&nbsp;&nbsp;&nbsp; **1873873** |
| Small Business Administration, 3.16%, 8/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;2138420 | &nbsp;&nbsp;&nbsp;&nbsp; **2059412** |
| Small Business Administration, 3.62%, 9/01/2033 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;961514 | &nbsp;&nbsp;&nbsp;&nbsp; **937029** |
|  |  | &nbsp;&nbsp; **$11083868** |
| U.S. Treasury Obligations – 25.5% | U.S. Treasury Obligations – 25.5% | U.S. Treasury Obligations – 25.5% |
| U.S. Treasury Bonds, 1.125%, 8/15/2040 | $&nbsp;&nbsp;27300000 | &nbsp;&nbsp;$16908938 |
| U.S. Treasury Bonds, 1.375%, 11/15/2040 | &nbsp;&nbsp;74100000 | &nbsp;&nbsp;&nbsp;&nbsp; **47594778** |
| U.S. Treasury Bonds, 1.75%, 8/15/2041 | &nbsp;&nbsp;67500000 | &nbsp;&nbsp;&nbsp;&nbsp; **45177539** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | &nbsp;&nbsp;**Value ($)** |
| Bonds – continued | Bonds – continued | Bonds – continued |
| U.S. Treasury Obligations – continued | U.S. Treasury Obligations – continued | U.S. Treasury Obligations – continued |
| U.S. Treasury Bonds, 2.375%, 2/15/2042 | $&nbsp;&nbsp;61700000 | &nbsp;&nbsp;$45236223 |
| U.S. Treasury Bonds, 2.875%, 5/15/2043 | &nbsp;&nbsp;58777000 | &nbsp;&nbsp;&nbsp;&nbsp; **45685341** |
| U.S. Treasury Bonds, 4.375%, 8/15/2043 | 101800000 | &nbsp;&nbsp;&nbsp;&nbsp; **98157469** |
| U.S. Treasury Bonds, 4.75%, 11/15/2043 | 177950000 | &nbsp;&nbsp;&nbsp;&nbsp; **179785109** |
| U.S. Treasury Bonds, 4.5%, 2/15/2044 | &nbsp;&nbsp;69700000 | &nbsp;&nbsp;&nbsp;&nbsp; **68107246** |
| U.S. Treasury Bonds, 2.5%, 2/15/2045 (f) | &nbsp;&nbsp;29323000 | &nbsp;&nbsp;&nbsp;&nbsp; **20845675** |
| U.S. Treasury Bonds, 2.25%, 8/15/2046 | &nbsp;&nbsp;36800000 | &nbsp;&nbsp;&nbsp;&nbsp; **24341187** |
| U.S. Treasury Bonds, 2.875%, 11/15/2046 | &nbsp;&nbsp;27653000 | &nbsp;&nbsp;&nbsp;&nbsp; **20570159** |
| U.S. Treasury Bonds, 3%, 2/15/2048 | &nbsp;&nbsp;19900000 | &nbsp;&nbsp;&nbsp;&nbsp; **14937438** |
| U.S. Treasury Bonds, 1.625%, 11/15/2050 | 132800000 | &nbsp;&nbsp;&nbsp;&nbsp; **70793813** |
| U.S. Treasury Bonds, 4.75%, 11/15/2053 | &nbsp;&nbsp;30800000 | &nbsp;&nbsp;&nbsp;&nbsp; **30972047** |
| U.S. Treasury Bonds, 4.25%, 2/15/2054 | 161400000 | &nbsp;&nbsp;&nbsp;&nbsp; **149452617** |
| U.S. Treasury Notes, 4.375%, 12/15/2026 | &nbsp;&nbsp;49000000 | &nbsp;&nbsp;&nbsp;&nbsp; **49522539** |
| U.S. Treasury Notes, 4%, 1/15/2027 | 138100000 | &nbsp;&nbsp;&nbsp;&nbsp; **138855234** |
| U.S. Treasury Notes, 4.125%, 1/31/2027 | &nbsp;&nbsp;26300000 | &nbsp;&nbsp;&nbsp;&nbsp; **26504442** |
| U.S. Treasury Notes, 4.125%, 2/15/2027 (f) | 465000000 | &nbsp;&nbsp;&nbsp;&nbsp; **468705469** |
| U.S. Treasury Notes, 4.125%, 7/31/2028 | &nbsp;&nbsp;64200000 | &nbsp;&nbsp;&nbsp;&nbsp; **65208140** |
| U.S. Treasury Notes, 4.875%, 10/31/2028 | &nbsp;&nbsp;90926000 | &nbsp;&nbsp;&nbsp;&nbsp; **94602110** |
| U.S. Treasury Notes, 4.625%, 4/30/2029 | &nbsp;&nbsp;38000000 | &nbsp;&nbsp;&nbsp;&nbsp; **39346328** |
| U.S. Treasury Notes, 4.25%, 6/30/2029 | 119000000 | &nbsp;&nbsp;&nbsp;&nbsp; **121612421** |
| U.S. Treasury Notes, 3.875%, 8/15/2034 | &nbsp;&nbsp;74000000 | &nbsp;&nbsp;&nbsp;&nbsp; **72485313** |
| U.S. Treasury Notes, 4.25%, 11/15/2034 | 105500000 | &nbsp;&nbsp;&nbsp;&nbsp; **106307734** |
|  |  | &nbsp;&nbsp;$2061715309 |
| Utilities - Electric Power – 1.5% | Utilities - Electric Power – 1.5% | Utilities - Electric Power – 1.5% |
| American Electric Power Co., Inc., 5.95%, 11/01/2032 | $&nbsp;&nbsp;13723000 | &nbsp;&nbsp;$14333257 |
| Calpine Corp., 3.75%, 3/01/2031 (n) | &nbsp;&nbsp;19925000 | &nbsp;&nbsp;&nbsp;&nbsp; **18419863** |
| Enel Finance International N.V., 3.5%, 4/06/2028 (n) | &nbsp;&nbsp;30284000 | &nbsp;&nbsp;&nbsp;&nbsp; **29406600** |
| Enel Finance International N.V., 7.5%, 10/14/2032 (n) | &nbsp;&nbsp;&nbsp;&nbsp;3444000 | &nbsp;&nbsp;&nbsp;&nbsp; **3896824** |
| Jersey Central Power & Light Co., 2.75%, 3/01/2032 (n) | &nbsp;&nbsp;21954000 | &nbsp;&nbsp;&nbsp;&nbsp; **18941679** |
| Pacific Gas & Electric Co., 3%, 6/15/2028 | &nbsp;&nbsp;11170000 | &nbsp;&nbsp;&nbsp;&nbsp; **10572437** |
| Pacific Gas & Electric Co., 3.3%, 8/01/2040 | &nbsp;&nbsp;34169000 | &nbsp;&nbsp;&nbsp;&nbsp; **24653062** |
|  |  | &nbsp;&nbsp; **$120223722** |
| **Total Bonds (Identified Cost, $8,376,877,703)** |  | &nbsp;&nbsp;**$7976521366** |
| Mutual Funds (h) – 1.4% | Mutual Funds (h) – 1.4% | Mutual Funds (h) – 1.4% |
| Money Market Funds – 1.4% | Money Market Funds – 1.4% |  |
| MFS Institutional Money Market Portfolio, 4.36% (v) (Identified Cost, $111,209,548) | 111208659 | &nbsp;&nbsp;$111208659 |
| Other Assets, Less Liabilities – 0.0% |  | &nbsp;&nbsp;&nbsp;&nbsp; **2933328** |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | **$8090663353** |

---

------

MFS Total Return Bond Fund

Portfolio of Investments – continued

(a) Non-income producing security.

(d) In default.

(f) All or a portion of the security has been segregated as collateral for open futures contracts.

(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values
of the fund's investments in affiliated issuers and in unaffiliated issuers were $111,208,659 and $7,976,521,366, respectively.

(i) Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the security.

(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 $2,104,710,401, representing 26.0% of net assets.

(q) Interest received was less than stated coupon rate.

(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: |
| AAC | &nbsp;&nbsp;Ambac Assurance Corp. |
| AGM | &nbsp;&nbsp;Assured Guaranty Municipal |
| CDO | &nbsp;&nbsp;Collateralized Debt Obligation |
| CLO | &nbsp;&nbsp;Collateralized Loan Obligation |
| CMT | &nbsp;&nbsp;Constant Maturity Treasury |
| FGIC | &nbsp;&nbsp;Financial Guaranty Insurance Co. |
| FLR | &nbsp;&nbsp;Floating Rate. Interest rate resets periodically based on the parenthetically disclosed reference rate plus a spread (if any). The period-end rate reported may not be the current rate. All reference rates are USD unless otherwise noted. |
| LIBOR | &nbsp;&nbsp;London Interbank Offered Rate |
| NPFG | &nbsp;&nbsp;National Public Finance Guarantee Corp. |
| REIT | &nbsp;&nbsp;Real Estate Investment Trust |
| SOFR | &nbsp;&nbsp;Secured Overnight Financing Rate |
| TBA | &nbsp;&nbsp;To Be Announced |
| UMBS | &nbsp;&nbsp;Uniform Mortgage-Backed Security |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** | **Derivative Contracts at 4/30/25** |
| **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** | **Futures Contracts** |
| **Description** | &nbsp;&nbsp;&nbsp;&nbsp;**Long/<br> Short** | &nbsp;&nbsp;&nbsp;&nbsp;**Currency** | &nbsp;&nbsp;&nbsp;&nbsp;**Contracts** | &nbsp;&nbsp;&nbsp;&nbsp;**Notional<br> Amount** | &nbsp;&nbsp;&nbsp;&nbsp;**Expiration<br> Date** | &nbsp;&nbsp;&nbsp;&nbsp;**Value/Unrealized<br> Appreciation<br> (Depreciation)** |
| **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** | **Asset Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Note 2 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;1665 | &nbsp;&nbsp;&nbsp;&nbsp;$346567149 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$2551635 |
| U.S. Treasury Note 5 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;3232 | &nbsp;&nbsp;&nbsp;&nbsp;352919252 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7192589 |
| U.S. Treasury Ultra Note 10 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;274 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;31437219 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;568392 |
|  |  |  |  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;$10312616 |
| **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** | **Liability Derivatives** |
| ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** | ***Interest Rate Futures*** |  |  |
| U.S. Treasury Ultra Bond 30 yr | &nbsp;&nbsp;&nbsp;&nbsp;Long | &nbsp;&nbsp;&nbsp;&nbsp;USD | &nbsp;&nbsp;&nbsp;&nbsp;1737 | &nbsp;&nbsp;&nbsp;&nbsp;$210231281 | &nbsp;&nbsp;&nbsp;&nbsp;June – 2025 | &nbsp;&nbsp;&nbsp;&nbsp;$(4145633) |

---

At April 30, 2025, the fund had cash collateral of $130,000 and other liquid securities with an aggregate value of $17,276,422 to cover any collateral or margin obligations for forward-settling mortgage-backed securities (MBS) transactions and certain derivative contracts.

#### See Notes to Financial Statements

------

MFS Total Return Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Assets and Liabilities** |

---

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

---

| | |
|:---|:---|
| **At 4/30/25 <br>Assets** |  |
| Investments in unaffiliated issuers, at value (identified cost, $8,376,877,703) | &nbsp;&nbsp;$7976521366 |
| Investments in affiliated issuers, at value (identified cost, $111,209,548) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;111208659 |
| Cash | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;693346 |
| Restricted cash for forward-settling MBS | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;130000 |
| Receivables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;When-issued investments sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11249659 |
| &nbsp;&nbsp;&nbsp;&nbsp;Investments sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18333446 |
| &nbsp;&nbsp;&nbsp;&nbsp;TBA sale commitments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44034418 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares sold | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6187193 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest and dividends | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64400025 |
| Receivable from investment adviser | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;102108 |
| Other assets | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11265 |
| Total assets | &nbsp;&nbsp;$8232871485 |
| **Liabilities** |  |
| Payables for |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Distributions | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$2607632 |
| &nbsp;&nbsp;&nbsp;&nbsp;Net daily variation margin on open futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;694637 |
| &nbsp;&nbsp;&nbsp;&nbsp;When-issued investments purchased | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11289485 |
| &nbsp;&nbsp;&nbsp;&nbsp;TBA purchase commitments | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;110487243 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fund shares reacquired | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;15357612 |
| Payable to affiliates |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3003 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1384728 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;22373 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2414 |
| Accrued expenses and other liabilities | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;359005 |
| Total liabilities | &nbsp;&nbsp;&nbsp;&nbsp;$142208132 |
| Net assets | &nbsp;&nbsp;$8090663353 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp;$9142705519 |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;(1052042166) |
| Net assets | &nbsp;&nbsp;$8090663353 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;849720369 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;&nbsp;**Net assets** | &nbsp;&nbsp;&nbsp;&nbsp;**Shares<br> outstanding** | &nbsp;&nbsp;&nbsp;&nbsp;**Net asset value<br> per share (a)** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;$2354290916 | &nbsp;&nbsp;&nbsp;&nbsp;247269757 | &nbsp;&nbsp;&nbsp;&nbsp;$9.52 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;905761 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94957 | &nbsp;&nbsp;&nbsp;&nbsp;9.54 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;26354902 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2764028 | &nbsp;&nbsp;&nbsp;&nbsp;9.53 |
| Class I | &nbsp;&nbsp;&nbsp;&nbsp;1773594710 | &nbsp;&nbsp;&nbsp;&nbsp;186305676 | &nbsp;&nbsp;&nbsp;&nbsp;9.52 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;828225 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;86835 | &nbsp;&nbsp;&nbsp;&nbsp;9.54 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12929280 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1357968 | &nbsp;&nbsp;&nbsp;&nbsp;9.52 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;85225670 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8952726 | &nbsp;&nbsp;&nbsp;&nbsp;9.52 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42499478 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4462186 | &nbsp;&nbsp;&nbsp;&nbsp;9.52 |
| Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;3794034411 | &nbsp;&nbsp;&nbsp;&nbsp;398426236 | &nbsp;&nbsp;&nbsp;&nbsp;9.52 |

---

(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 $9.94 [100 / 95.75 x $9.52]. 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, Class B, and
Class C shares. Redemption price per share was equal to the net asset value per share for Classes I, R1, R2, R3, R4, and R6.

------

MFS Total Return Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statement of Operations** |

---

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

---

| | |
|:---|:---|
| **Year ended 4/30/25 <br>Net investment income (loss)** |  |
| Income |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest | &nbsp;&nbsp;$360261833 |
| &nbsp;&nbsp;&nbsp;&nbsp;Dividends from affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;12429090 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1001237 |
| Total investment income | &nbsp;&nbsp;$373692160 |
| Expenses |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Management fee | &nbsp;&nbsp;&nbsp;$31627805 |
| &nbsp;&nbsp;&nbsp;&nbsp;Distribution and service fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6472052 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder servicing costs | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4330592 |
| &nbsp;&nbsp;&nbsp;&nbsp;Administrative services fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;603090 |
| &nbsp;&nbsp;&nbsp;&nbsp;Independent Trustees' compensation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;130138 |
| &nbsp;&nbsp;&nbsp;&nbsp;Custodian fee | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;357835 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shareholder communications | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;623705 |
| &nbsp;&nbsp;&nbsp;&nbsp;Audit and tax fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;94028 |
| &nbsp;&nbsp;&nbsp;&nbsp;Legal fees | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39703 |
| &nbsp;&nbsp;&nbsp;&nbsp;Miscellaneous | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;438685 |
| Total expenses | &nbsp;&nbsp;&nbsp;$44717633 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fees paid indirectly | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(18973) |
| &nbsp;&nbsp;&nbsp;&nbsp;Reduction of expenses by investment adviser and distributor | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8023012) |
| Net expenses | &nbsp;&nbsp;&nbsp;$36675648 |
| Net investment income (loss) | &nbsp;&nbsp;$337016512 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;$(54095376) |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29318 |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;(11250257) |
| Net realized gain (loss) | &nbsp;&nbsp;$(65316315) |
| Change in unrealized appreciation or depreciation |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Unaffiliated issuers | &nbsp;&nbsp;$323772057 |
| &nbsp;&nbsp;&nbsp;&nbsp;Affiliated issuers | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1719) |
| &nbsp;&nbsp;&nbsp;&nbsp;Futures contracts | &nbsp;&nbsp;&nbsp;&nbsp;33231241 |
| Net unrealized gain (loss) | &nbsp;&nbsp;$357001579 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;$291685264 |
| Change in net assets from operations | &nbsp;&nbsp;$628701776 |

---

------

MFS Total Return Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Statements of Changes in Net Assets** |

---

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | |
|:---|:---|:---|
|  | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;$337016512 | &nbsp;&nbsp;&nbsp;&nbsp;$310000976 |
| Net realized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;(65316315) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(176193379) |
| Net unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;357001579 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(116677655) |
| Change in net assets from operations | &nbsp;&nbsp;&nbsp;$628701776 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$17129942 |
| Total distributions to shareholders | &nbsp;&nbsp;$(350730784) | &nbsp;&nbsp;&nbsp;&nbsp;$(316262536) |
| Change in net assets from fund share transactions | &nbsp;&nbsp;&nbsp;$203103547 | &nbsp;&nbsp;&nbsp;&nbsp;$643704354 |
| Total change in net assets | &nbsp;&nbsp;&nbsp;$481074539 | &nbsp;&nbsp;&nbsp;&nbsp;$344571760 |
| **Net assets** |  |  |
| At beginning of period | &nbsp;&nbsp;7609588814 | &nbsp;&nbsp;&nbsp;&nbsp;7265017054 |
| At end of period | $8090663353 | &nbsp;&nbsp;&nbsp;$7609588814 |

---

------

MFS Total Return Bond Fund

---

| | |
|:---|:---|
| **Financial Statements** | &nbsp;&nbsp;**Financial Highlights** |

---

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class A** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.08 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.38 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.32 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.20 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.24 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.74 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.10) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.93) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.21) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.28) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.32) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.14 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.95) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8.46) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.55 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.60 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.62 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.04 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.07 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.84 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.07 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $2354291 | &nbsp;&nbsp;&nbsp;$2274215 | &nbsp;&nbsp;&nbsp;$2262535 | &nbsp;&nbsp;&nbsp;$2426564 | &nbsp;&nbsp;&nbsp;$2969273 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class B** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $9.20 | &nbsp;&nbsp;&nbsp;&nbsp;$9.58 | &nbsp;&nbsp;&nbsp;$10.01 | &nbsp;&nbsp;&nbsp;$11.29 | &nbsp;&nbsp;&nbsp;$11.10 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;$0.24 | &nbsp;&nbsp;&nbsp;&nbsp;$0.12 | &nbsp;&nbsp;&nbsp;&nbsp;$0.15 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 |
| Total from investment operations | $0.67 | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;$(1.01) | &nbsp;&nbsp;&nbsp;&nbsp;$0.42 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.13) | &nbsp;&nbsp;&nbsp;$(0.19) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | $(0.33) | &nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.27) | &nbsp;&nbsp;&nbsp;$(0.23) |
| Net asset value, end of period (x) | $9.54 | &nbsp;&nbsp;&nbsp;&nbsp;$9.20 | &nbsp;&nbsp;&nbsp;&nbsp;$9.58 | &nbsp;&nbsp;&nbsp;$10.01 | &nbsp;&nbsp;&nbsp;$11.29 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.33 | &nbsp;&nbsp;&nbsp;&nbsp;(0.66) | &nbsp;&nbsp;&nbsp;&nbsp;(1.68) | &nbsp;&nbsp;&nbsp;&nbsp;(9.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.77 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.37 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.35 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$906 | &nbsp;&nbsp;&nbsp;$1886 | &nbsp;&nbsp;&nbsp;$3384 | &nbsp;&nbsp;&nbsp;$4618 | &nbsp;&nbsp;&nbsp;$6865 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class C** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.57 | &nbsp;&nbsp;&nbsp;&nbsp;$10.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.28 | &nbsp;&nbsp;&nbsp;&nbsp;$11.10 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.11 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.12) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.26 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.66 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.07) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;&nbsp;$(1.01) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.18) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.22) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.57 | &nbsp;&nbsp;&nbsp;&nbsp;$10.01 | &nbsp;&nbsp;&nbsp;&nbsp;$11.28 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.76) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.88) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.57 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.47 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;3.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.25 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $26355 | &nbsp;&nbsp;&nbsp;$29563 | &nbsp;&nbsp;&nbsp;$36253 | &nbsp;&nbsp;&nbsp;$56980 | &nbsp;&nbsp;&nbsp;$77610 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class I** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.09 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.25 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.26 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.29) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.80) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.61 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.21 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.22 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $1773595 | &nbsp;&nbsp;&nbsp;$1568577 | &nbsp;&nbsp;&nbsp;$1361313 | &nbsp;&nbsp;&nbsp;$1617089 | &nbsp;&nbsp;&nbsp;$1651206 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R1** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | $9.20 | &nbsp;&nbsp;&nbsp;&nbsp;$9.57 | &nbsp;&nbsp;&nbsp;$10.01 | &nbsp;&nbsp;&nbsp;$11.28 | &nbsp;&nbsp;&nbsp;$11.10 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.30 | &nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;$0.11 | &nbsp;&nbsp;&nbsp;&nbsp;$0.14 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;(0.36) | &nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;(1.12) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.26 |
| Total from investment operations | $0.66 | &nbsp;&nbsp;&nbsp;$(0.06) | &nbsp;&nbsp;&nbsp;$(0.19) | &nbsp;&nbsp;&nbsp;$(1.01) | &nbsp;&nbsp;&nbsp;&nbsp;$0.40 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.32) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;$(0.12) | &nbsp;&nbsp;&nbsp;$(0.18) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | $(0.32) | &nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;$(0.25) | &nbsp;&nbsp;&nbsp;$(0.26) | &nbsp;&nbsp;&nbsp;$(0.22) |
| Net asset value, end of period (x) | $9.54 | &nbsp;&nbsp;&nbsp;&nbsp;$9.20 | &nbsp;&nbsp;&nbsp;&nbsp;$9.57 | &nbsp;&nbsp;&nbsp;$10.01 | &nbsp;&nbsp;&nbsp;$11.28 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;7.23 | &nbsp;&nbsp;&nbsp;&nbsp;(0.65) | &nbsp;&nbsp;&nbsp;&nbsp;(1.88) | &nbsp;&nbsp;&nbsp;&nbsp;(9.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.57 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;1.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.47 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;3.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.22 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | &nbsp;&nbsp;$828 | &nbsp;&nbsp;&nbsp;$1271 | &nbsp;&nbsp;&nbsp;$1279 | &nbsp;&nbsp;&nbsp;$1641 | &nbsp;&nbsp;&nbsp;$1812 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R2** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;$11.27 | &nbsp;&nbsp;&nbsp;&nbsp;$11.08 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.28 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.16 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.20 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.27 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.71 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.03) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.97) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.47 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.17) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.24) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.29) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.31) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.28) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;7.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.27) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.29) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8.79) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.19 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;1.02 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.01 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.02 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.97 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;3.69 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.72 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.49 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.74 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $12929 | &nbsp;&nbsp;&nbsp;$12556 | &nbsp;&nbsp;&nbsp;$14215 | &nbsp;&nbsp;&nbsp;$16565 | &nbsp;&nbsp;&nbsp;$25398 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R3** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;$11.27 | &nbsp;&nbsp;&nbsp;&nbsp;$11.08 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.37 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.36 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.26 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.73 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.00(w) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.11) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.94) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.49 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.20) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.26) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.39) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.32) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.30) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.04 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.02) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.04) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8.55) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.44 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.77 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.78 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.77 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.72 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;3.94 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.98 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $85226 | &nbsp;&nbsp;&nbsp;$69406 | &nbsp;&nbsp;&nbsp;$68213 | &nbsp;&nbsp;&nbsp;$79389 | &nbsp;&nbsp;&nbsp;$57652 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R4** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;$11.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.09 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.39 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.25 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;$0.75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.02 | &nbsp;&nbsp;&nbsp;&nbsp;$(0.09) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.91) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.51 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.29) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.40) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.34) | &nbsp;&nbsp;&nbsp;&nbsp;$(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.33) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;$9.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;8.30 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.24 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.80) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8.32) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.61 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.53 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.51 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.52 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.47 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;4.19 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.22 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.45 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.98 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.23 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $42499 | &nbsp;&nbsp;&nbsp;$38952 | &nbsp;&nbsp;&nbsp;$47748 | &nbsp;&nbsp;&nbsp;$50056 | &nbsp;&nbsp;&nbsp;$127449 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

MFS Total Return Bond Fund

Financial Highlights - continued

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R6** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **4/30/25** | &nbsp;&nbsp;&nbsp;**4/30/24** | &nbsp;&nbsp;&nbsp;**4/30/23** | &nbsp;&nbsp;&nbsp;**4/30/22** | &nbsp;&nbsp;&nbsp;**4/30/21** |
| Net asset value, beginning of period | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.09 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.40 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.34 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.23 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.26 |
| Net realized and unrealized gain (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.37) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1.13) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.26 |
| Total from investment operations | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.03 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.08) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.90) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$0.52 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.24) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.30) |
| From net realized gain |  | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.14) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.04) |
| Total distributions declared to shareholders | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.42) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.41) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.35) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.38) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(0.34) |
| Net asset value, end of period (x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.52 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.18 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$9.99 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$11.27 |
| Total return (%) (r)(s)(t)(x) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.41 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.33 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(0.70) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(8.23) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.71 |
| **Ratios (%) (to average net assets)<br> and Supplemental data:** |  |  |  |  |  |
| Expenses before expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.43 |
| Expenses after expense reductions (f) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.35 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0.37 |
| Net investment income (loss) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.29 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.31 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.56 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.09 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.31 |
| Portfolio turnover rate | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;75 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;97 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;188 |
| Net assets at end of period (000 omitted) | $3794034 | &nbsp;&nbsp;&nbsp;$3613162 | &nbsp;&nbsp;&nbsp;$3470078 | &nbsp;&nbsp;&nbsp;$3359986 | &nbsp;&nbsp;&nbsp;$3320149 |
| **Supplemental Rate:** |  |  |  |  |  |
| Portfolio turnover rate (excluding TBA transactions) (e) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;44 | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— | &nbsp;&nbsp;&nbsp;— |

---

(d) Per share data is based on average shares outstanding.

(e) Portfolio turnover rate (excluding TBA transactions) is disclosed beginning with the period ending April 30, 2024. Refer to Note 2 for more information on TBA transactions and mortgage dollar rolls.

(f) Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note 2 in the Notes to Financial Statements for additional information.

(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.

------

MFS Total Return Bond Fund

### Notes to Financial Statements
(1) Business and Organization

MFS Total Return Bond Fund (the fund) is a diversified series of MFS Series Trust IX (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company.

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

(2) Significant Accounting Policies

**General — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund's Statement of Assets and Liabilities through the date that the financial statements were issued.**

In this reporting period, the fund adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect the fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. The fund represents a single operating segment and the Chairman's Committee of the fund's adviser acts as the segment's CODM. The fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within the fund's financial statements.

**Balance Sheet Offsetting — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.**

**Investment Valuations — Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.**

Under the fund's valuation policy and procedures, debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data.

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

Pricing services generally value debt instruments assuming orderly transactions of institutional round lot sizes, but a fund may hold or transact in such securities in smaller, odd lot sizes. In instances where a fund holds an odd lot size position in a debt instrument, such position will typically be valued using the pricing agent's institutional round lot price for the debt instrument. Odd lots may trade at lower prices than institutional round lots, and the fund may receive different prices when it sells odd lot positions than it would receive for sales of institutional round lot positions. An investment may also be valued at fair value if the adviser determines that the investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. Other financial instruments are derivative instruments, such as futures contracts. The following is a summary of the levels used as of April 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| U.S. Treasury Bonds & U.S. Government Agencies & Equivalents | $— | $2072799177 | $— | $2072799177 |
| Non - U.S. Sovereign Debt |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9254136 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9254136 |
| Municipal Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;79474471 |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;79474471 |
| U.S. Corporate Bonds |  | &nbsp;&nbsp;2109103065 |  | &nbsp;&nbsp;2109103065 |
| Residential Mortgage-Backed Securities |  | &nbsp;&nbsp;1634097028 |  | &nbsp;&nbsp;1634097028 |
| Commercial Mortgage-Backed Securities |  | &nbsp;&nbsp;&nbsp;&nbsp;400353389 |  | &nbsp;&nbsp;&nbsp;&nbsp;400353389 |
| Asset-Backed Securities (including CDOs) |  | &nbsp;&nbsp;&nbsp;&nbsp;916929134 |  | &nbsp;&nbsp;&nbsp;&nbsp;916929134 |
| Foreign Bonds |  | &nbsp;&nbsp;&nbsp;&nbsp;754510966 |  | &nbsp;&nbsp;&nbsp;&nbsp;754510966 |
| Investment Companies | &nbsp;&nbsp;111208659 |  |  | &nbsp;&nbsp;&nbsp;&nbsp;111208659 |
| Total | $111208659 | $7976521366 | $— | $8087730025 |

---

---

| | | | |
|:---|:---|:---|:---|
| **Other Financial Instruments** |  |  |  |
| Futures Contracts – Assets | $10312616 | $— | $10312616 |
| Futures Contracts – Liabilities | &nbsp;&nbsp;(4145633) |  | &nbsp;&nbsp;(4145633) |

---

For further information regarding security characteristics, see the Portfolio of Investments.

**Foreign Currency Translation — Purchases and sales of foreign investments, income, and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions or on the reporting date for foreign denominated receivables and payables. Gains and losses attributable to foreign currency exchange rates on sales of securities are recorded for financial statement purposes as net realized gains and losses on investments. Gains and losses attributable to foreign exchange rate movements on receivables, payables, income and expenses are recorded for financial statement purposes as foreign currency transaction gains and losses. That portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed.**

**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.**

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

The derivative instruments used by the fund during the period were futures contracts. Depending on the type of derivative, a fund may exit a derivative position by entering into an offsetting transaction with a counterparty or exchange, negotiating an agreement with the derivative counterparty, or novating the position to a third party. The fund may be unable to promptly close out a futures position in instances where the daily fluctuation in the price for that type of future exceeds the daily limit set by the exchange. The fund's period end derivatives, as presented in the Portfolio of Investments and the associated Derivative Contract tables, generally are indicative of the volume of its derivative activity during the period.

The following table presents, by major type of derivative contract, the fair value, on a gross basis, of the asset and liability components of derivatives held by the fund at April 30, 2025 as reported in the Statement of Assets and Liabilities:

---

| | | | |
|:---|:---|:---|:---|
|  |  | &nbsp;&nbsp;**Fair Value (a)** | &nbsp;&nbsp;**Fair Value (a)** |
| **Risk** | **Derivative Contracts** | &nbsp;&nbsp;**Asset Derivatives** | &nbsp;&nbsp;**Liability Derivatives** |
| Interest Rate | Futures Contracts | &nbsp;&nbsp;$10312616 | &nbsp;&nbsp;$(4145633) |

---

(a) Values presented in this table for futures contracts correspond to the values reported in the Portfolio of Investments. Only the current day net variation margin for futures contracts is reported separately within the Statement of Assets and Liabilities.

The following table presents, by major type of derivative contract, the realized gain (loss) on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures<br> Contracts** |
| Interest Rate | $(11250257) |

---

The following table presents, by major type of derivative contract, the change in unrealized appreciation or depreciation on derivatives held by the fund for the year ended April 30, 2025 as reported in the Statement of Operations:

---

| | |
|:---|:---|
| **Risk** | **Futures<br> Contracts** |
| Interest Rate | $33231241 |

---

Derivative counterparty credit risk is managed through formal evaluation of the creditworthiness of all potential counterparties. On certain, but not all, uncleared derivatives, the fund attempts to reduce its exposure to counterparty credit risk whenever possible by entering into an ISDA Master Agreement on a bilateral basis. The ISDA Master Agreement gives each party to the agreement the right to terminate all transactions traded under such agreement if there is a specified deterioration in the credit quality of the other party. Upon an event of default or a termination of the ISDA Master Agreement, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each agreement to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the ISDA Master Agreement could result in a reduction of the fund's credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

Collateral and margin requirements differ by type of derivative. For cleared derivatives (e.g., futures contracts, cleared swaps, and exchange-traded options), margin requirements are set by the clearing broker and the clearing house and collateral, in the form of cash or securities, is posted by the fund directly with the clearing broker. Collateral terms are counterparty agreement specific for uncleared derivatives (e.g., forward foreign currency exchange contracts, uncleared swap agreements, and uncleared options). Collateral, in the form of cash and securities, is held in segregated accounts with the fund's custodian in connection with these agreements. For derivatives traded under an ISDA Master Agreement, which contains a credit support annex, the collateral requirements are netted across all transactions traded under such counterparty-specific agreement and an amount is posted from one party to the other to collateralize such obligations. Cash that has been segregated or delivered to cover the fund's collateral or margin obligations under derivative contracts, if any, will be reported separately in the Statement of Assets and Liabilities as restricted cash for uncleared derivatives and/or deposits with brokers for cleared derivatives. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments. The fund may be required to make payments of interest on uncovered collateral or margin obligations with the broker. Any such payments are included in "Miscellaneous" expense in the Statement of Operations.

**Futures Contracts — The fund entered into futures contracts which may be used to hedge against or obtain broad market exposure, interest rate exposure, currency exposure, or to manage duration. A futures contract represents a commitment for the future purchase or sale of an asset at a specified price on a specified date.**

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

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.

**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.**

Debt obligations may be placed on non-accrual status or set to accrue at a rate of interest less than the contractual coupon when the collection of all or a portion of interest has become doubtful. Interest income for those debt obligations may be further reduced by the write-off of the related interest receivables when deemed uncollectible.

The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.

Investment transactions are recorded on the trade date. In determining the net gain or loss on securities sold, the cost of securities is determined on the identified cost basis.

The fund may purchase or sell mortgage-backed securities on a "To Be Announced" (TBA) basis. A TBA transaction is subject to extended settlement and typically does not designate the actual security to be delivered, but instead includes an approximate principal amount. The price of the TBA security and the date that it will be settled are fixed at the time the transaction is negotiated. The value of the security varies with market fluctuations and no interest accrues to the fund until settlement takes place. TBA purchase and sale commitments are held at carrying amount, which approximates fair value and are categorized as level 2 within the fair value hierarchy and included in TBA purchase and TBA sale commitments in the Statement of Assets and Liabilities, as applicable. Losses may arise as a result of changes in the value of the TBA investment prior to settlement date or due to counterparty non-performance.

The fund may also enter into mortgage dollar rolls, typically TBA dollar rolls, in which the fund sells TBA mortgage-backed securities to financial institutions and simultaneously agrees to repurchase similar (same issuer, type and coupon) securities at a later date at an agreed-upon price. During the period between the sale and repurchase, the fund will not be entitled to receive interest and principal payments on the securities sold. The fund accounts for dollar roll transactions as purchases and sales and realizes gains and losses on these transactions. As such, these transactions may result in an increase to the fund's portfolio turnover rate. Portfolio turnover rates including and excluding TBA transactions are presented in the Financial Highlights. Dollar roll transactions involve the risk that the market value of the securities that the fund is required to purchase may decline below the agreed upon repurchase price of those securities.

To mitigate the counterparty credit risk on TBA transactions, mortgage dollar rolls, and other types of forward settling mortgage-backed and asset-backed security transactions, the fund whenever possible enters into a Master Securities Forward Transaction Agreement ("MSFTA") on a bilateral basis with each of the counterparties with whom it undertakes a significant volume of transactions. The MSFTA gives each party to the agreement the right to terminate all transactions traded under such agreement if

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

there is a specified deterioration in the credit quality of the other party. Upon an event of default or a termination of the MSFTA, the non-defaulting party has the right to close out all transactions traded under such agreement and to net amounts owed under each transaction to one net amount payable by one party to the other. This right to close out and net payments across all transactions traded under the MSFTA could result in a reduction of the fund's credit risk to such counterparty equal to any amounts payable by the fund under the applicable transactions, if any.

For mortgage-backed and asset-backed securities traded under a MSFTA, the collateral and margining requirements are contract specific. Collateral amounts across all transactions traded under such agreement are netted and an amount is posted from one party to the other to collateralize such obligations. Cash that has been pledged to cover the fund's collateral or margin obligations under a MSFTA, if any, will be reported separately on the Statement of Assets and Liabilities as restricted cash. Securities pledged as collateral or margin for the same purpose, if any, are noted in the Portfolio of Investments.

**Fees Paid Indirectly — The fund's custody fee may be reduced by a credit earned under an arrangement that measures the value of U.S. dollars deposited with the custodian by the fund. The amount of the credit, for the year ended April 30, 2025, is shown as a reduction of total expenses in the Statement of Operations.**

**Tax Matters and Distributions — The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.**

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

Book/tax differences primarily relate to amortization of premium and accretion of discount of debt securities and derivative transactions.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp;&nbsp;$350730784 | &nbsp;&nbsp;&nbsp;$316262536 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

---

| | |
|:---|:---|
| **As of 4/30/25** |  |
| Cost of investments | &nbsp;&nbsp;&nbsp;&nbsp;$8512558154 |
| Gross appreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;56971159 |
| Gross depreciation | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(475632305) |
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp;&nbsp;&nbsp;$(418661146) |
| Undistributed ordinary income | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18067775 |
| Capital loss carryforwards | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(622827891) |
| Other temporary differences | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(28620904) |
| Total distributable earnings (loss) | &nbsp;&nbsp;&nbsp;$(1052042166) |

---

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 | $(202844260) |
| Long-Term | &nbsp;&nbsp;(419983631) |
| Total | $(622827891) |

---

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

**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 B and 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:**

---

| | | |
|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | &nbsp;&nbsp;&nbsp;**Year ended<br> 4/30/24** |
| Class A | &nbsp;&nbsp;$99452560 | &nbsp;&nbsp;&nbsp;&nbsp;$93459417 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45956 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;91659 |
| Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;949789 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1095555 |
| Class I | &nbsp;&nbsp;&nbsp;74506392 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60982122 |
| Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;39174 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42374 |
| Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;501882 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;494468 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;3265574 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2770638 |
| Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;1796017 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1906787 |
| Class R6 | &nbsp;&nbsp;170173440 | &nbsp;&nbsp;&nbsp;&nbsp;155419516 |
| Total | $350730784 | &nbsp;&nbsp;&nbsp;$316262536 |

---

(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 $2.5 billion | 0.50% |
| In excess of $2.5 billion and up to $5 billion | 0.35% |
| In excess of $5 billion and up to $10 billion | 0.34% |
| In excess of $10 billion | 0.33% |

---

The investment adviser has agreed in writing to reduce its management fee to 0.40% of the fund's average daily net assets up to $2.5 billion. This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2025. For the year ended April 30, 2025, this management fee reduction amounted to $2,495,383, which is included in the reduction of total expenses in the Statement of Operations. MFS has also 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 agreed in writing to waive at least 0.01% of its management fee as part of this agreement. The agreement to waive at least 0.01% of the management fee will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2026. For the year ended April 30, 2025, this management fee reduction amounted to $1,086,543, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.35% 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:

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  |  |  |  | &nbsp;&nbsp;&nbsp;**Classes** |  |  |  |  |
| **A** | &nbsp;&nbsp;&nbsp;**B** | &nbsp;&nbsp;&nbsp;**C** | &nbsp;&nbsp;&nbsp;**I** | &nbsp;&nbsp;&nbsp;**R1** | &nbsp;&nbsp;&nbsp;**R2** | &nbsp;&nbsp;&nbsp;**R3** | &nbsp;&nbsp;&nbsp;**R4** | &nbsp;&nbsp;&nbsp;**R6** |
| 0.60% | &nbsp;&nbsp;&nbsp;1.35% | &nbsp;&nbsp;&nbsp;1.45% | &nbsp;&nbsp;&nbsp;0.45% | &nbsp;&nbsp;&nbsp;1.45% | &nbsp;&nbsp;&nbsp;0.95% | &nbsp;&nbsp;&nbsp;0.70% | &nbsp;&nbsp;&nbsp;0.45% | &nbsp;&nbsp;&nbsp;0.36% |

---

This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until August 31, 2025. For the year ended April 30, 2025, this reduction amounted to $2,079,493, 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 $69,926 for the year ended April 30, 2025, as its portion of the initial sales charge on sales of Class A shares of the fund.**

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

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.

#### Distribution Plan Fee Table:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution<br> Fee Rate (d)** | **Service<br> Fee Rate (d)** | **Total<br> Distribution<br> Plan (d)** | **Annual<br> Effective<br> Rate (e)** | **Distribution<br> and Service<br> Fee** |
| Class A | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.15% | $5900710 |
| Class B | 0.75% | 0.25% | 1.00% | 0.90% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13394 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;282763 |
| Class R1 | 0.75% | 0.25% | 1.00% | 1.00% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11727 |
| Class R2 | 0.25% | 0.25% | 0.50% | 0.50% | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;64962 |
| Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;— | 0.25% | 0.25% | 0.25% | &nbsp;&nbsp;&nbsp;&nbsp;198496 |
| Total Distribution and Service Fees |  |  |  |  | $6472052 |

---

(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each class's average daily
net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended April 30, 2025 based on each class's average daily net assets. 0.10% of the
Class A and Class B service fee is currently being waived under a written waiver agreement. For the year ended April 30, 2025, this waiver amounted to $2,360,255 and $1,338 for Class A and Class B shares,
respectively, and is included in the reduction of total expenses in the Statement of Operations. This written waiver agreement will continue until modified by the fund's Board of Trustees, but such
agreement will continue at least until August 31, 2025. MFD has voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified
on the account except for accounts attributable to MFS or its affiliates' seed money. There were no service fee rebates for the year ended April 30, 2025.

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended April 30, 2025, were as follows:

---

| | |
|:---|:---|
|  | **Amount** |
| Class A | $67205 |
| Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;895 |
| Class C | &nbsp;&nbsp;&nbsp;3674 |

---

**Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended April 30, 2025, the fee was $153,041, which equated to 0.0019% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended April 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $4,177,551.**

**Administrator — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended April 30, 2025 was equivalent to an annual effective rate of 0.0075% 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.**

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

**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.**

MFS purchased or redeemed fund shares on the dates indicated:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Date** | **Transaction** | &nbsp;&nbsp;**Class** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class B | &nbsp;&nbsp;6 | &nbsp;&nbsp;$54 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class I | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;30 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R1 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;31 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R2 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;29 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R3 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;30 |
| 8/19/2024 | Redemption | &nbsp;&nbsp;Class R4 | &nbsp;&nbsp;3 | &nbsp;&nbsp;&nbsp;&nbsp;29 |

---

(4) Portfolio Securities

For the year ended April 30, 2025, purchases and sales of investments, other than short-term obligations, were as follows:

---

| | | |
|:---|:---|:---|
|  | **Purchases** | &nbsp;&nbsp;**Sales** |
| U.S. Government securities | $5056932881 | &nbsp;&nbsp;$5131542579 |
| Non-U.S. Government securities | &nbsp;&nbsp;1049595905 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;822574713 |

---

(5) Shares of Beneficial Interest

The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares sold |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;41018890 | &nbsp;&nbsp;&nbsp;&nbsp;$390598957 | &nbsp;&nbsp;&nbsp;&nbsp;47926461 | &nbsp;&nbsp;&nbsp;&nbsp;$446713776 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5063 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48307 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16186 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;150087 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;736144 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7046888 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;768395 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7146301 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;65388675 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;622765901 | &nbsp;&nbsp;&nbsp;&nbsp;73358649 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;680994863 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;27034 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;258293 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29490 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;275307 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;383345 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3638185 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;295610 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2756984 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;2665492 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;25124472 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1722112 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;16053693 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;1167509 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11112772 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1149026 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10689291 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;69810530 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;663654792 | &nbsp;&nbsp;&nbsp;&nbsp;77349777 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;720656317 |
|  | 181202682 | &nbsp;&nbsp;&nbsp;$1724248567 | &nbsp;&nbsp;&nbsp;202615706 | &nbsp;&nbsp;&nbsp;$1885436619 |
| Shares issued to shareholders<br> in reinvestment of distributions |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;10053505 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$95604804 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9712167 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$90373190 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4800 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45688 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9524 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;88752 |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;86623 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;824673 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;105892 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;986567 |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;&nbsp;&nbsp;5715268 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;54341607 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4912455 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;45722558 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4022 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;38321 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4543 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;42331 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52547 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;499721 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;52849 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;491848 |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;342714 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3259143 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;297560 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2769096 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;149711 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1424195 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;141752 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1319025 |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;17354097 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;165061821 | &nbsp;&nbsp;&nbsp;&nbsp;16294916 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;151653413 |
|  | &nbsp;&nbsp;33763287 | &nbsp;&nbsp;&nbsp;&nbsp;$321099973 | &nbsp;&nbsp;&nbsp;&nbsp;31531658 | &nbsp;&nbsp;&nbsp;&nbsp;$293446780 |

---

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended<br> 4/30/25** | **Year ended<br> 4/30/25** | &nbsp;&nbsp;**Year ended<br> 4/30/24** | &nbsp;&nbsp;**Year ended<br> 4/30/24** |
|  | **Shares** | &nbsp;&nbsp;**Amount** | &nbsp;&nbsp;**Shares** | &nbsp;&nbsp;**Amount** |
| Shares reacquired |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;(51532005) | &nbsp;&nbsp;&nbsp;&nbsp;$(489087781) | &nbsp;&nbsp;&nbsp;(46587620) | &nbsp;&nbsp;&nbsp;&nbsp;$(433136904) |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;(120018) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1144282) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(173948) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1618241) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;(1274155) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(12112686) | &nbsp;&nbsp;&nbsp;&nbsp;(1445668) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(13468926) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;(55674848) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(528443001) | &nbsp;&nbsp;&nbsp;(49796134) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(463548761) |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(82469) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(781823) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(29338) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(270552) |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;(445649) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4236017) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(467845) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4360414) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;(1616352) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(15364494) | &nbsp;&nbsp;&nbsp;&nbsp;(1594924) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(14906940) |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;(1096612) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(10403516) | &nbsp;&nbsp;&nbsp;&nbsp;(2042373) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(19127337) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;(82250074) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(780671393) | &nbsp;&nbsp;&nbsp;(63069035) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(584740970) |
|  | (194092182) | &nbsp;&nbsp;$(1842244993) | &nbsp;&nbsp;(165206885) | &nbsp;&nbsp;$(1535179045) |
| Net change |  |  |  |  |
| &nbsp;&nbsp;&nbsp;Class A | &nbsp;&nbsp;&nbsp;&nbsp;(459610) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$(2884020) | &nbsp;&nbsp;&nbsp;&nbsp;11051008 | &nbsp;&nbsp;&nbsp;&nbsp;$103950062 |
| &nbsp;&nbsp;&nbsp;Class B | &nbsp;&nbsp;&nbsp;&nbsp;(110155) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1050287) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(148238) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1379402) |
| &nbsp;&nbsp;&nbsp;Class C | &nbsp;&nbsp;&nbsp;&nbsp;(451388) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4241125) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(571381) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5336058) |
| &nbsp;&nbsp;&nbsp;Class I | &nbsp;&nbsp;15429095 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;148664507 | &nbsp;&nbsp;&nbsp;&nbsp;28474970 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;263168660 |
| &nbsp;&nbsp;&nbsp;Class R1 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(51413) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(485209) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4695 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;47086 |
| &nbsp;&nbsp;&nbsp;Class R2 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(9757) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(98111) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(119386) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1111582) |
| &nbsp;&nbsp;&nbsp;Class R3 | &nbsp;&nbsp;&nbsp;&nbsp;1391854 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13019121 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;424748 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3915849 |
| &nbsp;&nbsp;&nbsp;Class R4 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;220608 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2133451 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(751595) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(7119021) |
| &nbsp;&nbsp;&nbsp;Class R6 | &nbsp;&nbsp;&nbsp;&nbsp;4914553 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;48045220 | &nbsp;&nbsp;&nbsp;&nbsp;30575658 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;287568760 |
|  | &nbsp;&nbsp;20873787 | &nbsp;&nbsp;&nbsp;&nbsp;$203103547 | &nbsp;&nbsp;&nbsp;&nbsp;68940479 | &nbsp;&nbsp;&nbsp;&nbsp;$643704354 |

---

The fund is one of several mutual funds in which certain MFS funds may invest. The MFS funds do not invest in the underlying funds for the purpose of exercising management or control. At the end of the period, the MFS Conservative Allocation Fund, the MFS Moderate Allocation Fund, the MFS Growth Allocation Fund, the MFS Lifetime Income Fund, and the MFS Lifetime 2030 Fund were the owners of record of approximately 7%, 6%, 2%, 1%, and 1%, respectively, of the value of outstanding voting shares of the fund. In addition, the MFS Lifetime 2025 Fund, the MFS Lifetime 2035 Fund, the MFS Lifetime 2040 Fund, the MFS Lifetime 2045 Fund, the MFS Lifetime 2050 Fund, the MFS Lifetime 2055 Fund, the MFS Lifetime 2060 Fund, and the MFS Lifetime 2065 Fund were each the owners of record of less than 1% of the value of outstanding voting shares of the fund.

Effective June 1, 2019, purchases of the fund's Class B shares were closed to new and existing investors subject to certain exceptions.

Effective September 29, 2023, purchases of the fund's Class R1 and Class R2 shares were closed to new eligible investors.

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended April 30, 2025, the fund's commitment fee and interest expense were $38,990 and $0, respectively, and are included in "Miscellaneous" expense in the Statement of Operations.

(7) Investments in Affiliated Issuers

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers for the year ended April 30, 2025:

------

MFS Total Return Bond Fund

Notes to Financial Statements - continued

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Beginning<br> Value** | &nbsp;&nbsp;&nbsp;**Purchases** | &nbsp;&nbsp;&nbsp;**Sales<br> Proceeds** | &nbsp;&nbsp;&nbsp;**Realized<br> Gain<br> (Loss)** | &nbsp;&nbsp;&nbsp;**Change in<br> Unrealized<br> Appreciation or<br> Depreciation** | &nbsp;&nbsp;&nbsp;**Ending<br> Value** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$316826471 | &nbsp;&nbsp;&nbsp;$1764910169 | &nbsp;&nbsp;&nbsp;$1970555580 | &nbsp;&nbsp;&nbsp;$29318 | &nbsp;&nbsp;&nbsp;$(1719) | &nbsp;&nbsp;&nbsp;$111208659 |

---

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp;&nbsp;**Dividend<br> Income** | &nbsp;&nbsp;&nbsp;**Capital Gain<br> Distributions** |
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp;&nbsp;$12429090 | &nbsp;&nbsp;&nbsp;$— |

---

------

MFS Total Return Bond Fund

### Report of Independent Registered Public Accounting Firm
To the Board of Trustees of MFS Series Trust IX and the Shareholders of MFS Total Return Bond Fund:

#### Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of MFS Total Return Bond Fund (the "Fund"), including the portfolio of investments, as of April 30, 2025, the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of April 30, 2025, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

#### Basis for Opinion
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of April 30, 2025, by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

DELOITTE & TOUCHE LLP

Boston, Massachusetts

June 13, 2025

We have served as the auditor of one or more of the MFS investment companies since 1924.

------

MFS Total Return Bond Fund

### Results of Shareholder Meeting (unaudited)
At a special meeting of shareholders of MFS Series Trust IX, which was held on November 14, 2024, the following action was taken:

#### Item 1: To elect the following individuals as Trustees, effective January 1, 2025:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp;&nbsp;**Number of Dollars** | &nbsp;&nbsp;&nbsp;**Number of Dollars** |
| **Nominee** | &nbsp;&nbsp;&nbsp;**For** | &nbsp;&nbsp;&nbsp;**Against/Withheld** |
| Steven E. Buller | &nbsp;&nbsp;&nbsp;16907334964.271 | &nbsp;&nbsp;&nbsp;564877606.664 |
| John A. Caroselli | &nbsp;&nbsp;&nbsp;16919748090.782 | &nbsp;&nbsp;&nbsp;552464480.153 |
| Maureen R. Goldfarb | &nbsp;&nbsp;&nbsp;16987867788.742 | &nbsp;&nbsp;&nbsp;484344782.193 |
| Peter D. Jones | &nbsp;&nbsp;&nbsp;16947211557.080 | &nbsp;&nbsp;&nbsp;525001013.855 |
| John P. Kavanaugh | &nbsp;&nbsp;&nbsp;16952477521.647 | &nbsp;&nbsp;&nbsp;519735049.288 |
| James W. Kilman, Jr. | &nbsp;&nbsp;&nbsp;16931150908.125 | &nbsp;&nbsp;&nbsp;541061662.810 |
| Clarence Otis, Jr. | &nbsp;&nbsp;&nbsp;16921309024.232 | &nbsp;&nbsp;&nbsp;550903546.702 |
| Michael W. Roberge | &nbsp;&nbsp;&nbsp;16956315372.901 | &nbsp;&nbsp;&nbsp;515897198.033 |
| Maryanne L. Roepke | &nbsp;&nbsp;&nbsp;16988422371.536 | &nbsp;&nbsp;&nbsp;483790199.398 |
| Paula E. Smith | &nbsp;&nbsp;&nbsp;17026175142.111 | &nbsp;&nbsp;&nbsp;446037428.824 |
| Laurie J. Thomsen | &nbsp;&nbsp;&nbsp;16991821354.292 | &nbsp;&nbsp;&nbsp;480391216.642 |
| Darrell A. Williams | &nbsp;&nbsp;&nbsp;16944148530.126 | &nbsp;&nbsp;&nbsp;528064040.808 |

---

------

MFS Total Return Bond Fund

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

The fund intends to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

------

#### ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
There is nothing to report for this item for MFS Total Return Bond Fund.

#### ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.
This information is disclosed as part of the financial statements included in Item 7 above for MFS Total Return 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 Total Return Bond Fund. See the Statement of Operations and Note 3 within the Notes to Financial Statements for more information.

#### ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.
Not Applicable.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 12. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 13. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 14. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 15. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant's Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 407 (c)(2)(iv) of Regulation S-K or this Item.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 16. CONTROLS AND PROCEDURES.
* Based upon their evaluation of the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act")) as conducted within 90 days of the filing date of this report on Form N-CSR, the Registrant's principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the Registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. 

* There were no changes in the Registrant's internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the period covered by the report that have materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting. 

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 17. DISCLOSURE OF SECURITIES LENDING ACTIVITIES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ITEM 18. RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION.
Not applicable to the Registrant.

------

#### ITEM 19. EXHIBITS.
* Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit: Attached hereto as [EX-99.COE](Code_of_Ethics.htm).

* Any policy required by the listing standards adopted pursuant to Rule 10D-1 under the Exchange Act (17 CFR 240.10D-1) by the registered national securities exchange or registered national securities association upon which the registrant's securities are listed. Not applicable.

* A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto as [EX-99.302CERT](99.302CERT.htm).

* Any written solicitation to purchase securities under Rule 23c-1 under the Act (17 CFR 270.23c-1) sent or given during the period covered by the report by or on behalf of the registrant to 10 or more persons. Not applicable.

* Change in the registrant's independent public accountant. Not applicable.

* If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed "filed" for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference. Attached hereto as [EX-99.906CERT](99.906CERT.htm).

------

#### Notice
A copy of the Amended and Restated 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 IX

By (Signature and Title)\*

/S/ DAVID L. DILORENZO

David L. DiLorenzo, President

Date: June 13, 2025

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)\*

/S/ DAVID L. DILORENZO

David L. DiLorenzo, President (Principal Executive Officer)

Date: June 13, 2025

By (Signature and Title)\*

/S/ KASEY L. PHILLIPS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

Kasey L. Phillips, Treasurer (Principal Financial Officer and Accounting Officer)

Date: June 13, 2025

\* Print name and title of each signing officer under his or her signature.

------

## Ex-99

**<u>EX-99.302CERT</u>**

**MFS SERIES TRUST IX**

**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 IX;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.The registrant's other certifying officer and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 13, 2025

<u>/S/ DAVID L. DILORENZO</u>

David L. DiLorenzo

President (Principal Executive Officer)

**<u>EX-99.302CERT</u>**

**MFS SERIES TRUST IX**

**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 IX;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.The registrant's other certifying officer and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: June 13, 2025

<u>/S/ KASEY L. PHILLIPS</u>

Kasey L. Phillips

Treasurer (Principal Financial Officer and Accounting Officer)

------

## Exhibit 99.906

**<u>EX-99.906CERT</u>**

**MFS SERIES TRUST IX**

**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 IX (the "Registrant") fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: June 13, 2025

<u>/S/ DAVID L. DILORENZO</u>

David L. DiLorenzo

President (Principal Executive Officer)

**A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.**

**<u>EX-99.906CERT</u>**

**MFS SERIES TRUST IX**

**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 IX (the "Registrant") fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: June 13, 2025

<u>/S/ KASEY L. PHILLIPS</u>

Kasey L. Phillips

Treasurer (Principal Financial Officer and Accounting Officer)

**A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.**

------

## Ex-99.Code

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<u>EX-99.COE</u>

**Code of Ethics for Principal Executive and Principal Financial Officers**

**Effective April 1, 2024**

**Policy Purpose and Summary**

Section 406 of the Sarbanes-Oxley Act requires that each MFS Fund registered under the Investment Company Act of 1940 disclose whether or not it has adopted a code of ethics for senior financial officers, applicable to its principal financial officer and principal accounting officer.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**I.Overview**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A. Covered Officers/Purpose of the Code

This code of ethics (this "Code") has been adopted by the funds (collectively, "Funds" and each, "Fund") under supervision of the MFS Funds Board (the "Board") and applies to the Funds' Principal Executive Officer and Principal Financial Officer (the "Covered Officers" each of whom is set forth in Exhibit A) for the purpose of promoting:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•full, fair, accurate, timely and understandable disclosure in reports and documents that the Funds file with, or submit to, the Securities and Exchange Commission ("SEC") and in other public communications made by the Funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•compliance by the Funds with applicable laws and governmental rules and regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the prompt internal reporting of violations of the Code to an appropriate person or persons identified in the Code; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•accountability for adherence to the Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B. Conduct Guidelines

Each Covered Officer should adhere to a high standard of business ethics and should be sensitive to situations that may give rise to actual as well as apparent conflicts of interest. In addition, each Covered Officer should not place his or her personal interests ahead of the Funds' interests and should endeavor to act honestly and ethically. In furtherance of the foregoing, each Covered Officer must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not use his or her personal influence or personal relationships improperly to influence investment decisions or financial reporting for any Fund whereby the Covered Officer would benefit personally to the detriment of the Fund; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not cause a Fund to take action, or fail to take action, for the individual personal benefit of the Covered Officer rather than the benefit of the Fund.

The following activities, which could create the appearance of a conflict of interest, are permitted only with the approval of the Funds' Chief Legal Officer ("CLO"):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•service as a director on the board of any "for profit" company other than the board of the Funds' investment adviser or its subsidiaries or board of a pooled investment vehicle sponsored by the Funds' investment adviser or its subsidiaries;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•running for political office;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the receipt of any Fund business-related gift or any entertainment from any company with which a Fund has current or prospective business dealings unless such gift or entertainment is permitted by the gifts and entertainment policy of the Funds' investment adviser;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•any material ownership interest in, or any consulting or employment relationship with, any Fund service providers (e.g., custodian banks, audit firms), other than the Funds' investment adviser, principal underwriter, administrator or any affiliated person thereof;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•a direct or indirect financial interest in commissions, transaction charges or spreads paid by a Fund for effecting portfolio transactions or for selling or redeeming shares, other than an interest arising from the Covered Officer's employment or securities ownership.

**C.Disclosure and Compliance**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Each Covered Officer should familiarize himself or herself with the disclosure requirements generally applicable to the Funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•each Covered Officer should not knowingly misrepresent, or cause others to misrepresent, facts about a Fund to others, whether within or outside the Fund, including to the Fund's trustees and auditors, and to governmental regulators and self-regulatory organizations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•each Covered Officer should, to the extent appropriate within his or her area of Fund responsibility, consult with other officers and employees of the Funds and the adviser with the goal of promoting full, fair, accurate, timely and understandable disclosure in the reports and documents the Funds file with, or submit to, the SEC and in other public communications made by the Funds; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•it is the responsibility of each Covered Officer to promote compliance within his or her area of Fund responsibility with the standards and restrictions imposed by applicable laws, rules and regulations.

**D.Reporting and Accountability**

Each Covered Officer must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•upon adoption of the Code (or thereafter as applicable, upon becoming a Covered Officer), affirm in writing to the Board that he or she has received, read, and understands the Code;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•annually thereafter affirm to the Board that he or she has complied with the requirements of the Code;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•annually report to the CLO affiliations and relationships which are or may raise the appearance of a conflict of interest with the Covered Officer's duties to the Funds, as identified in the annual Trustee and Officer Questionnaire;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not retaliate against any other Covered Officer or any officer or employee of the Funds or their affiliated persons for reports of potential violations that are made in good faith; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•notify the CLO promptly if he or she knows of any violation of this Code. Failure to do so is itself a violation of this Code.

The CLO is responsible for applying this Code to specific situations in which questions are presented under it, granting waivers upon consultation with the Board or its designee, investigating violations, and has the authority to interpret this Code in any particular situation. The CLO will report requests for waivers to the Board (or a designee thereof) promptly upon receipt of a waiver request and will periodically report to the Board any approvals granted since the last report.

The CLO will take all appropriate action to investigate any potential violations reported to him or her and to report any violations to the Board. If the Board concurs that a violation has occurred, it will consider appropriate action, which may include review of, and appropriate modifications to, applicable policies and procedures; notification to appropriate personnel of the investment adviser or its board; or a recommendation to dismiss the Covered Officer.

Any changes to or waivers of this Code will, to the extent required, be disclosed as provided by SEC rules.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E. Confidentiality

All reports and records prepared or maintained pursuant to this Code and under the direction of the CLO will be considered confidential and shall be maintained and protected accordingly. Except as otherwise required by law or this Code, such matters shall not be disclosed to anyone other than the Funds' Board, its counsel, counsel to the Board's independent trustees and senior management and the board of directors of the Fund's investment adviser and its counsel.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;F. Internal Use

The Code is intended solely for the internal use by the Funds and does not constitute an admission, by or on behalf of any Fund, as to any fact, circumstance, or legal conclusion.

**II.Supervision**

The Board of Trustees of the Funds, including a majority of the Trustees who are not "interested persons" (as defined in the 1940 Act) of the Funds, shall review no less frequently than annually, a report from the CLO regarding the affirmations of the principal executive officer and the principal financial officer as to compliance with this Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**III.Interpretation and Escalation**

Breaches of the Code are reviewed by the CLO and communicated to the Board of Trustees of the affected Fund(s). Interpretations of this Policy shall be made from time to time by the CLO, as needed, and questions regarding the application of this Policy to a specific set of facts are escalated to the CLO.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IV. Authority

Section 406 of the Sarbanes-Oxley Act.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**V.Monitoring**

Adherence to this policy is monitored by the CLO.

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| | |
|:---|:---|
| VI. | **Related Policies** |
|  | This Code shall be the sole code of ethics adopted by the Funds for purposes of |
|  | Section 406 of the Sarbanes-Oxley Act and the rules and forms applicable to |
|  | registered investment companies thereunder. Insofar as other policies or procedures |
|  | of the Funds, the Funds' adviser, principal underwriter, or other service providers |
|  | govern or purport to govern the behavior or activities of the Covered Officers who |
|  | are subject to this Code, they are superseded by this Code to the extent that they |
|  | overlap or conflict with the provisions of this Code. The Funds' and their investment |
|  | adviser's codes of ethics under Rule 17j-1 under the Investment Company Act and |
|  | any other codes or policies or procedures adopted by the Funds or their investment |
|  | adviser or other service providers are separate requirements and are not part of this |
|  | Code. |
| VII. | **Amendment** |
|  | Any amendments to this Code, other than amendments to Exhibit A, must be |
|  | approved or ratified by a majority vote of the Board, including a majority of |
|  | independent trustees. |
| VIII. | **Recordkeeping** |
|  | All required books, records and other documentation shall be retained in accordance |
|  | with MFS' related record retention policy. |

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**Additional procedures may need to be implemented by departments to properly comply with this policy.**

**<u>Exhibit A</u>**

**<u>As of April 1, 2024</u>**

**Persons Covered by this Code of Ethics**

Funds' Principal Executive Officer: David L. DiLorenzo

Funds' Principal Financial Officer: Kasey L. Phillips

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