MFM MFS Municipal Income Trust

MFS^® CHARTER INCOME TRUST
MFS^® GOVERNMENT MARKETS INCOME TRUST
MFS^® HIGH INCOME MUNICIPAL TRUST
MFS^® HIGH YIELD MUNICIPAL TRUST
MFS^® INTERMEDIATE HIGH INCOME FUND
MFS^® INTERMEDIATE INCOME TRUST
MFS^® INVESTMENT GRADE MUNICIPAL TRUST
MFS^® MULTIMARKET INCOME TRUST
MFS^® MUNICIPAL INCOME TRUST

111 Huntington Avenue, Boston, Massachusetts 02199

Notice of the 2024 Annual Meeting of Shareholders

To be held on October 3, 2024

The 2024 Annual Meeting of Shareholders (the “Meeting”) of each of the above referenced trusts (each, a “Trust” and collectively, the “Trusts”) will be held at 111 Huntington Avenue, Boston, Massachusetts 02199, at 10:30 a.m. (Eastern Time) on Thursday, October 3, 2024, for the following purposes:

ITEM 1. To elect Trustees to the Board of Trustees of each Trust as outlined below:

a. for each of MFS Charter Income Trust, MFS Government Markets Income Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, and MFS Multimarket Income Trust:

i. three Trustees, John A. Caroselli, James W. Kilman, Jr., and Clarence Otis, Jr., to be elected by common shareholders of each Trust; and

b. for each of MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Municipal Income Trust:

i. three Trustees, John A. Caroselli, James W. Kilman, Jr., and Clarence Otis, Jr., to be elected by common and preferred shareholders of each Trust, voting together as a single class; and

ii. two Trustees, John P. Kavanaugh and Laurie J. Thomsen, to be elected by preferred shareholders only, voting as a separate class; and

ITEM 2. To transact such other business as may properly come before the Meeting and any adjournment(s) or postponement(s) thereof.

This notice and the related proxy materials are being mailed to Shareholders on or about August 23, 2024.

THE TRUSTEES OF YOUR TRUST RECOMMEND THAT YOU VOTE IN

FAVOR OF ITEM 1.

It is anticipated that each Trust will hold its Meeting simultaneously with each other Trust. Shareholders of each Trust will vote separately on each item.

Only a Trust’s shareholders of record as of the close of business on July 31, 2024, will be entitled to receive notice of and to vote at that Trust’s Meeting or any adjournment(s) or postponement(s) thereof.

By order of the Board of Trustees,

CHRISTOPHER R. BOHANE

Assistant Secretary and Assistant Clerk

August 23, 2024

YOUR VOTE IS IMPORTANT. WE WOULD APPRECIATE YOU PROMPTLY VOTING, SIGNING AND RETURNING THE ENCLOSED PROXY SO THAT IT IS RECEIVED BY THE DATE OF THE MEETING OR RECORDING YOUR VOTING INSTRUCTIONS BY TELEPHONE OR VIA THE INTERNET BY 10:00 A.M., EASTERN TIME, ON THE DATE OF THE MEETING, WHICH WILL HELP AVOID THE ADDITIONAL EXPENSE OF A SECOND SOLICITATION FOR EACH TRUST. THE ENCLOSED ADDRESSED ENVELOPE REQUIRES NO POSTAGE AND IS PROVIDED FOR YOUR CONVENIENCE.

MFS^® CHARTER INCOME TRUST
MFS^® GOVERNMENT MARKETS INCOME TRUST
MFS^® HIGH INCOME MUNICIPAL TRUST
MFS^® HIGH YIELD MUNICIPAL TRUST
MFS^® INTERMEDIATE HIGH INCOME FUND
MFS^® INTERMEDIATE INCOME TRUST
MFS^® INVESTMENT GRADE MUNICIPAL TRUST
MFS^® MULTIMARKET INCOME TRUST
MFS^® MUNICIPAL INCOME TRUST

Proxy Statement

This Proxy Statement is furnished in connection with the solicitation of proxies by and on behalf of the Board of Trustees of MFS Charter Income Trust, MFS Government Markets Income Trust, MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, MFS Investment Grade Municipal Trust, MFS Multimarket Income Trust, and MFS Municipal Income Trust, (each, a “Trust” and collectively, the “Trusts”) to be used at the Meeting of Shareholders of each Trust (each, a “Meeting”) to be held at 10:30 a.m. (Eastern Time) on Thursday, October 3, 2024, at 111 Huntington Avenue, Boston, Massachusetts 02199, for the purposes set forth in the accompanying Notice of the 2024 Annual Meeting of Shareholders (the “Notice”). Information regarding the Board of Trustees can be found in the section of this Proxy Statement entitled “Election of Trustees.” If the enclosed form of proxy is executed and returned, it may nevertheless be revoked prior to its exercise by a signed writing filed with the proxy tabulation agent, Computershare Trust Company, N.A. (“Computershare”), c/o Proxy Tabulator, PO Box 43130, Providence RI, 02940-9430, or delivered at a Meeting.

On July 31, 2024, the following number of shares was outstanding for each Trust:

Shareholders of record at the close of business on July 31, 2024, will be entitled to one vote for each share held, and each fractional share will be entitled to a proportionate fractional vote. Each Trust will vote separately on each item; votes of multiple Trusts will not be aggregated.

The mailing address of each Trust is 111 Huntington Avenue, Boston, Massachusetts 02199. Solicitation of proxies is being made by the mailing of the Notice and this Proxy Statement with its enclosures on or about August 23, 2024. In addition to soliciting proxies by mail, the Trustees of your Trust and employees of Massachusetts Financial Services Company (“MFS”), your Trust’s investment adviser and administrator, may solicit proxies in person or by telephone. The expenses of the preparation of Proxy Statements and related materials, including printing and delivery costs, and vote solicitation are borne on a proportional basis by each Trust.

The Trusts have engaged Computershare to provide solicitation and voting tabulation services. It is anticipated that the cost of these services will be $33,065 and may increase substantially in the event that any proposal is contested or increased solicitation efforts are required.

Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meetings To Be Held on October 3, 2024.

The Proxy Statement is available at www.mfs.com. If you elect to vote in person, directions to the Meetings in order to vote in person are available by telephoning toll-free (800) 225-2606. If your shares are held by your broker, in order to vote in person at the Meeting, you will need to obtain a “Legal Proxy” from your broker and present it to the Inspector of Election at the Meeting. Also, in order to revoke your proxy, you may need to forward your written revocation or a later-dated proxy card to your broker rather than to the Trust.

Summary of Items

ITEM 1 — ELECTION OF TRUSTEES

The Board of Trustees (the “Board”), which oversees each Trust, provides broad supervision over the affairs of each Trust. Those Trustees who are not “interested persons” (as defined in the Investment Company Act of 1940, as amended (the “1940 Act”)) of your Trust or of MFS are referred to as “Independent Trustees” throughout this Proxy Statement. MFS is responsible for the investment management of each Trust’s assets and for providing a variety of other administrative services to each Trust. The officers of each Trust are responsible for its operations.

The Board currently consists of 10 Trustees, nine of whom are Independent Trustees. An Independent Trustee serves as Chair of the Board. Taking into account the number, the diversity, and the complexity of the MFS Funds (as defined below) overseen by the Board and the aggregate amount of assets under management in the Trusts, the Board has determined that the efficient conduct of its affairs makes it desirable to delegate responsibility for certain specific matters to Committees of the Board. Each of the seven standing Committees of the Board, to which the Board has delegated certain authority and oversight responsibilities, consists exclusively of Independent Trustees. In connection with each of the Board’s regular meetings, the Independent Trustees meet separately from MFS with their counsel. The Independent Trustees also meet regularly with the Trusts’ Chief Compliance Officer (who is also MFS’ Chief Compliance Officer) to receive reports regarding the compliance of the Trusts with the federal securities laws and the Trusts’ compliance policies and procedures. The Board reviews its

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leadership structure periodically and believes that its structure is appropriate to enable the Board to exercise its oversight of the Trusts.

The Trusts have retained MFS as their investment adviser and administrator. MFS provides the Trusts with investment advisory services, and is responsible for day-to-day administration of the Trusts and management of the risks that arise from the Trusts’ investments and operations. Certain employees of MFS serve as the Trusts’ officers, including the Trusts’ principal executive officer and principal financial and accounting officer. The Board provides oversight of the services provided by MFS and its affiliates, including the risk management activities of MFS and its affiliates (including those related to cybersecurity). In addition, each Committee of the Board provides oversight of its risk management activities with respect to the particular activities within the Committee’s purview. In the course of providing oversight, the Board and the Committees receive a wide range of reports on the Trusts’ activities, including reports on each Trust’s investment portfolio, the compliance of the Trusts with applicable laws, and the Trusts’ financial accounting and reporting. The Board also meets periodically with the portfolio managers of each Trust to receive reports regarding the management of each Trust, including its investment risks. The Board and the relevant Committees meet periodically with MFS’ Head of Global Enterprise Risk to receive reports on MFS’ and its affiliates’ risk management activities, including their efforts to (i) identify key risks that could adversely affect the Trusts or MFS; (ii) implement processes and controls to mitigate such key risks; and (iii) monitor business and market conditions in order to facilitate the processes described in (i) and (ii) above. In addition, the Board and the relevant Committees oversee risk management activities related to the key risks associated with services provided by various non-affiliated service providers through the receipt of reports prepared by MFS, and, in certain circumstances, through the receipt of reports directly from service providers, such as in the case of each Trust’s auditor, custodian, and pricing service providers. As the Trusts’ operations are carried out by service providers, the Board’s oversight of the risk management processes of the service providers, including processes to address cybersecurity and other operational failures, is inherently limited.

Effective as of the election and qualification of the nominees at the 2024 Annual Meeting of Shareholders, the Board has fixed the number of Trustees of each Trust at 10. Under the provisions of each Trust’s Declaration of Trust, the Trustees are divided into three classes, each having a term of three years.¹ Under the terms of the Board’s retirement policy, an Independent Trustee shall retire at the end of the calendar year in which he or she reaches the earlier of 75 years of age or 15 years of service on the Board (or, in the case of an Independent Trustee who joined the Board prior to 2015, 20 years of service on the Board).

For each of MFS Charter Income Trust, MFS Government Markets Income Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, and MFS Multimarket Income Trust, the Nomination and Compensation Committee has selected and nominated, and recommended that the Board nominate, for election by common shareholders, John A. Caroselli, James W. Kilman, Jr., and Clarence Otis, Jr. , as Trustees of the class whose term will expire at the 2027 Annual Meeting of Shareholders (or special meeting in lieu thereof) of the Trust, in each case, to hold office until his or her successor is elected and qualified. The Board has nominated each of the individuals selected and nominated by the Committee. Each nominee is presently a Trustee of MFS Charter Income Trust, MFS Government Markets Income Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, and MFS Multimarket Income Trust, and has agreed to serve as a Trustee of each Trust if elected. The Board recommends that you vote in favor of their election.

For each of MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Municipal Income Trust, the Nomination and Compensation Committee has selected and nominated, and recommended that the Board nominate, for election by common and preferred shareholders, voting together as a single class, John A. Caroselli, James W. Kilman, Jr., and Clarence Otis, Jr., as Trustees of the class whose term will expire at the 2027 Annual Meeting of Shareholders (or special meeting in lieu thereof) to hold office until his or her successor is elected and qualified. The Nomination and Compensation Committee has also selected and nominated, and recommended that the Board nominate, for election by preferred shareholders only, voting as a separate class, John P. Kavanaugh and Laurie J. Thomsen, for a term that will expire at the next annual Meeting of shareholders (or special meeting in lieu thereof) to hold office until his or her successor is elected and qualified. The Board has nominated each of the individuals selected and nominated by the Committee. Each nominee is presently a Trustee of MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Municipal Income Trust and has agreed to serve as Trustee of each Trust if elected. The Board recommends that you vote in favor of their election.

It is intended that, absent contrary instructions, proxies will be voted in favor of electing John A. Caroselli, John P. Kavanaugh, James W. Kilman, Jr., Clarence Otis, Jr., and Laurie J. Thomsen. If, before the election, any nominee refuses or is unable to serve, proxies will be voted for a replacement nominee designated by each Trust’s current Trustees, or the Trustees may fix the number of Trustees at fewer than 10 for a Trust.

¹  For the MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Municipal Income Trust, two Trustees are solely elected by the holders of the preferred shares of each Fund for a one-year term.

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The Trustees of the Trusts as of August 1, 2024, are listed below, together with their principal occupations during the past five years (their titles may have varied during that period). Additional information about each Trustee follows the table.

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⁽¹⁾  Date first appointed to serve as Trustee of an MFS Fund. Each Trustee has served continuously since appointment unless indicated otherwise.

⁽²⁾  An Independent Trustee shall retire at the end of the calendar year in which he or she reaches the earlier of 75 years of age or 15 years or service on the Board (or, in the case of any Independent Trustee who joined the Board prior to 2015, 20 years of service on the Board).

⁽³⁾  Directorships or trusteeships of companies required to report to the Securities and Exchange Commission (the “SEC”) (i.e., “public companies”).

⁽⁴⁾  “Interested person” of the Trust within the meaning of the 1940 Act, which is the principal federal law governing investment companies like the Trusts, as a result of holding a position with MFS. The address of MFS is 111 Huntington Avenue, Boston, Massachusetts 02199.

⁽⁵⁾  For each of MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Municipal Income Trust, Mr. Kavanaugh and Ms. Thomsen serve as Trustees elected by the holders of preferred shares for a one-year term.

⁽⁶⁾  For each of MFS Charter Income Trust, MFS Government Markets Income Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, and MFS Multimarket Income Trust, Mr. Kavanaugh and Ms. Thomsen serve as Trustees elected by holders of common shares for a three-year term.

Unless otherwise noted, each current Trustee listed above served as a member of the Board of 135 funds within the MFS Family of Funds (the “MFS Funds”) as of July 31, 2024. The address of each Trustee is c/o MFS, 111 Huntington Avenue, Boston, Massachusetts 02199.

The following provides an overview of the Board's process for identifying individuals for the pool from which trustee candidates are ultimately selected and the considerations that led the Board to conclude that each individual serving as a Trustee of the Trust should so serve. As part of this process, the Board works with the Nomination and Compensation Committee, which recommends qualified trustee candidates to the Board in the event that a position is vacated or created. Because the Trustees believe that a well-balanced and qualified board is an important component of a strong governance structure, the Board is committed to actively seeking individuals with diverse backgrounds, experience and perspectives, including women and underrepresented minority candidates, for the pool from which trustee candidates are selected. The current members of the Board have joined the Board at different points in time since 2005. Generally, no one factor was decisive in the original selection of an individual to join the Board. Among the factors the Board considered when concluding that an individual should serve on the Board were the following: (i) the individual’s business and professional experience and accomplishments; (ii) the individual’s ability to work effectively with the other members of the Board; (iii) the individual’s prior experience, if any, serving on the boards of public companies (including, where relevant, other investment companies) and other complex enterprises and organizations; and (iv) how the individual’s skills, experience and attributes would contribute to an appropriate mix of relevant skills, experience, and perspectives on the Board.

In respect of each current Trustee, the individual’s substantial professional accomplishments and prior experience, including, in some cases, in fields related to the operations of the Trusts, were a significant factor in the determination that the individual should serve as a Trustee of the Trusts. Following is a summary of each Trustee’s professional experience and additional considerations that contributed to the Board’s conclusion that an individual should serve on the Board:

Interested Trustee:

Michael W. Roberge

Mr. Roberge is Chairman and Chief Executive Officer of MFS (the MFS Funds’ investment adviser) and is a member of the firm’s Management Committee and Chairman of the MFS Board of Directors. As Chief Executive Officer, Mr. Roberge sets the strategic priorities for MFS, leading a team responsible for the investment, distribution, finance, human resources, legal and technology functions at the firm. He has substantial executive and investment management experience, having worked for MFS for over 28 years.

Independent Trustees:

Steven E. Buller, CPA

Mr. Buller has substantial accounting, investment management, and executive experience at firms within the investment management industry. Mr. Buller was the Chief Financial Officer and Managing Director of BlackRock, Inc. (“BlackRock”), where he oversaw BlackRock’s tax department, internal audit and control functions, and the global corporate and

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investment company accounting policy. Prior to joining BlackRock, Mr. Buller was an auditor at Ernst & Young LLP for over 30 years, where he served as Global Director of Asset Management and as the audit partner for various investment company complexes. Mr. Buller was chairman of the Financial Accounting Standards Advisory Council, and was a member of the Standing Advisory Group of the Public Company Accounting Oversight Board (“PCAOB”). He has also served on the boards of BlackRock Finco UK, a privately-held company, and Person-to-Person, a community service organization.

John A. Caroselli

Mr. Caroselli has substantial senior executive experience in the financial services industry. Mr. Caroselli is the president of JC Global Advisors, LLC, where he provides consulting services with specialization in strategy development and execution, merger integration, market growth plan design and organizational development. He served as Executive Vice President and Chief Development Officer of First Capital Corporation, Executive Vice President and Chief Strategy Officer of KeySpan Corporation, and Executive Vice President of Corporate Development of AXA Financial. Mr. Caroselli also held senior officer positions with Chase Manhattan Corporation, Chemical Bank, and Manufacturers Hanover Trust.

Maureen R. Goldfarb

Ms. Goldfarb has substantial executive and board experience at firms within the investment management industry. She was the Chief Executive Officer and Chairman of the Board of Trustees of the John Hancock Funds and an Executive Vice President of John Hancock Financial Services, Inc. Prior to joining John Hancock, Ms. Goldfarb was a Senior Vice President with Massachusetts Mutual Life Insurance Company. She also held various marketing, distribution, and portfolio management positions with other investment management firms. Ms. Goldfarb is a former member of the Board of Governors of the Investment Company Institute.

Peter D. Jones

Mr. Jones has substantial senior executive, accounting and investment management experience at firms within the investment management industry. Mr. Jones was the Chairman of Franklin Templeton Institutional, LLC and President of Franklin Templeton Distributors Inc. Mr. Jones formerly was the President of IDEX Distributors, Inc., which oversaw the formation and launch of IDEX Mutual Funds (now part of Transamerica Funds). Mr. Jones is a member of the Investment Advisory Council of the Florida State Board of Administration. Mr. Jones was formerly a CPA and served as Tax Manager at PricewaterhouseCoopers in Tampa, Florida and Atlanta, Georgia. Mr. Jones is a member of the Governing Council of the Independent Directors Council, a unit of the Investment Company Institute which serves the mutual fund director community. Mr. Jones is also a member of the Investment Committee and a former trustee of the Florida State University Foundation.

John P. Kavanaugh

Mr. Kavanaugh has substantial executive, investment management, and board experience at firms within the investment management and mutual fund industry and is a Chartered Financial Analyst. He was the Chief Investment Officer of The Hanover Insurance Group, Inc., and the President and Chairman of Opus Investment Management, Inc., an investment adviser. Mr. Kavanaugh held research and portfolio management positions with Allmerica Financial and PruCapital, Inc. He previously served on the board of the Independent Directors Council, a unit of the Investment Company Institute which serves the mutual fund independent director community.

James W. Kilman, Jr.

Mr. Kilman has substantial senior executive and investment banking management experience at firms within the investment management industry. Mr. Kilman is currently a Senior Advisor to Burford Capital Limited, a global finance and investment management firm focusing on the law, and the Chief Executive Officer of KielStrand Capital LLC, a family office that makes and manages investments and oversees philanthropic activities. Previously, Mr. Kilman served as the Chief Financial Officer of Burford Capital Limited. Mr. Kilman formerly was the Vice Chairman, Co-Head of Diversified Financials Coverage in the Financial Institutions Banking Group at Morgan Stanley & Co. Prior to joining Morgan Stanley, Mr. Kilman was Managing Director in the Advisory Group within the Fixed Income Division’s Mortgage Department at Goldman Sachs & Co. Mr. Kilman also held managerial and investment positions with ABN AMRO Inc. and PaineWebber Inc.

Clarence Otis, Jr.

Mr. Otis has substantial executive, financial, and board experience at publicly-traded and privately-held companies. Mr. Otis was the Chairman and Chief Executive Officer of Darden Restaurants, Inc., the world’s largest full-service

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restaurant company, and where he previously served in other senior positions at Darden Restaurants, including Chief Financial Officer and Executive Vice President. Mr. Otis is a director of VF Corporation, Verizon Communications, Inc., and The Travelers Companies. He is a former director of the Federal Reserve Bank of Atlanta.

Maryanne L. Roepke

Ms. Roepke has substantial executive and compliance experience within the investment management industry. She was a Senior Vice President and the Chief Compliance Officer of American Century Investments, Inc., where she worked for over 30 years. Ms. Roepke served on the board of the American Century SICAV, a mutual fund complex. She is a former member of the Investment Company Institute’s Chief Compliance Officer Committee and Risk Management Advisory Committee.

Laurie J. Thomsen

Ms. Thomsen has substantial venture capital financing experience, as well as board experience at publicly-traded and privately-held companies. Ms. Thomsen was a co-founding General Partner of Prism Venture Partners, a venture capital firm investing in healthcare and technology companies, and served as an Executive Partner of New Profit, Inc., a venture philanthropy firm. Prior to that, she was a General Partner at Harbourvest Partners, a venture capital firm. Ms. Thomsen is a director of The Travelers Companies, Inc. and Dycom Industries, Inc.

Information about each Trust, including information about its investment adviser and administrator, independent registered public accounting firm, executive officers, and the interests of certain persons, appears under “Trust Information” below.

Required Vote.    For MFS Charter Income Trust, MFS Government Markets Income Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, and MFS Multimarket Income Trust, the election of John A. Caroselli, James W. Kilman, Jr., and Clarence Otis, Jr. will require the affirmative vote of a plurality of the Trust’s outstanding common shares voting at the Meeting in person or by proxy. For MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Municipal Income Trust, the election of John A. Caroselli, James W. Kilman, Jr., and Clarence Otis, Jr. will require the affirmative vote of a plurality of the Trust’s outstanding preferred and common shares, voting together as a single class, at the Meeting in person or by proxy. For MFS High Income Municipal Trust, MFS High Yield Municipal Trust, and MFS Investment Grade Municipal Trust, the election of John P. Kavanaugh and Laurie J. Thomsen will require the affirmative vote of a plurality of the Trust’s outstanding preferred shares, voting as a separate class, at the Meeting in person or by proxy. For MFS Municipal Income Trust, the election of John P. Kavanaugh and Laurie J. Thomsen will require the affirmative vote of a majority of the Trust’s outstanding preferred shares, voting as a separate class, at the Meeting in person or by proxy.

THE BOARD, INCLUDING THE INDEPENDENT TRUSTEES, UNANIMOUSLY RECOMMENDS THAT THE SHAREHOLDERS OF EACH TRUST VOTE TO ELECT EACH OF THE NOMINEES AS A TRUSTEE OF EACH TRUST.

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Committees

Each Trust’s Board meets regularly throughout the year to discuss matters and take certain actions relating to the Trust. Each Trust’s Board has several standing committees, which are described below.

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⁽¹⁾  The number of committee meetings for the fiscal years ending October 31, 2023 and November 30, 2023 is the same for all committees.

⁽²⁾  Independent Trustees. Although Mr. Kavanaugh is not a member of all Committees of the Board, he is invited to and attends many of the Committees’ meetings in his capacity as Chair of the Board.

⁽³⁾  Audit Committee Financial Expert.

* Independent Trustees.

The Trustees generally hold at least six regular meetings each calendar year. These regular meetings generally take place over a two-day period. The performance and operations of each of the Trusts is reviewed by the Trustees at each meeting and more in-depth reviews of particular Trusts are conducted by the Trustees throughout the year. During the fiscal years ended October 31, 2023 and November 30, 2023, each Trust held seven Board meetings. Each Trustee attended at least 75% of the Board and applicable committee meetings noted for each Trust.

Audit Committee

Each Trust’s Audit Committee consists only of Independent Trustees. Each Trust’s Audit Committee’s statement on the Trust’s most recent audited financials is included below under the heading “Independent Registered Public Accounting Firm.” Each Trust’s Board has adopted a written charter for the Audit Committee. A copy of the Audit Committee’s charter is available at www.mfs.com. To access a copy of the Audit Committee’s charter, after entering the website by entering “United States” as your location and entering “Individual Investor” as your role if you have not already done so, hover your cursor over “Products & Strategies,” and then click on “Closed End Funds” under the “Investment Options” heading. Next, use the drop-down menu and click on the Trust name, then click on the “Resources” tab, then click on the “Reports & Other Documents” tab, and then click on “Audit Committee Charter.”

Nomination and Compensation Committee

The Trustees have adopted a written charter for the Nomination and Compensation Committee. A copy of the Nomination and Compensation Committee’s charter is available at www.mfs.com. To access a copy of the Nomination and Compensation Committee’s charter, after entering the website by entering “United States” as your location and entering “Individual Investor” as your role if you have not already done so, hover your cursor over “Products & Strategies,” and then click on “Closed End Funds” under the “Investment Options” heading. Next, use the drop-down menu and click on the Trust name, then click on the “Resources” tab, then click on the “Reports & Other Documents” tab, and then click on “Nomination and Compensation Committee Charter.”

Each Trust’s Nomination and Compensation Committee consists only of Independent Trustees.

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The Nomination and Compensation Committee requires that Trustee candidates have a college degree or equivalent business experience, but has not otherwise established specific, minimum qualifications that must be met by an individual to be considered by the Committee for nomination as a Trustee. The Nomination and Compensation Committee may take into account a wide variety of factors in considering Trustee candidates, including, but not limited to: (i) availability and commitment of a candidate to attend meetings and perform his or her responsibilities to the Board; (ii) relevant industry and related experience; (iii) educational background; (iv) financial expertise; (v) an assessment of the candidate’s ability, judgment and expertise; (vi) overall diversity of the composition of the Board; and (vii) such other factors as the Committee deems appropriate. While the Committee has not adopted a particular definition of diversity, when considering a nominee’s and the Board’s diversity, the Committee generally considers the manner in which each nominee’s professional experience, expertise in matters that are relevant to the oversight of the Trust (e.g., investment management, distribution, accounting, trading, compliance, legal), general leadership experience, and life experience (including with respect to gender and ethnicity) are complementary and, as a whole, contribute to the ability of the Board to oversee the Trust. The Nomination and Compensation Committee may consider candidates for Trustee recommended by each Trust’s current Trustees, officers or shareholders or by MFS or any other source deemed appropriate by the Nomination and Compensation Committee. The Nomination and Compensation Committee may, but is not required to, retain a third-party search firm at the applicable Trust’s expense to identify potential candidates.

The Nomination and Compensation Committee will review and consider nominees recommended by shareholders to serve as Trustee, provided that the recommending shareholder follows the Procedures for Shareholders to Submit Nominee Candidates, which are set forth as Appendix B to the Trusts’ Nomination and Compensation Committee Charter (which is available at www.mfs.com). Among other requirements, these procedures provide that the recommending shareholder must submit any recommendation in writing to the Trust, to the attention of the Trust’s Secretary, at the address of the principal executive offices of the Trust. Any recommendation must include certain biographical information and other information regarding the candidate and the recommending shareholder, and must include a written and signed consent of the candidate to be named as a nominee and to serve as a Trustee if elected. The Nomination and Compensation Committee takes the diversity of a particular nominee and the overall diversity of the Board into account when considering and evaluating nominees for trustee. The foregoing description is only a summary.

The Nomination and Compensation Committee has full discretion to reject nominees recommended by shareholders, and there is no assurance that any such person properly recommended and considered by the Committee will be nominated for election to the Board of a Trust.

Share Ownership

As of July 31, 2024, the Trustees and Officers of each Trust as a group owned less than 1% of the outstanding shares of any Trust. The Board has adopted a policy requiring that each Independent Trustee shall have invested on an aggregate basis, within two years of membership on the Board, an amount equal to his or her prior calendar year’s base retainer and meeting attendance fees in shares of the MFS Funds.

The following table shows the dollar range of equity securities beneficially owned by each nominee or Trustee (a) of each Trust and (b) on an aggregate basis, in the MFS Funds overseen by the nominee or Trustee, as of July 31, 2024.

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The following dollar ranges apply:

N. None

A. $1 – $10,000

B. $10,001 – $50,000

C. $50,001 – $100,000

D. Over $100,000

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Shareholder Communications with the Board of Trustees

The Board of Trustees of each Trust has adopted procedures by which shareholders may send communications to the Board. Shareholders may mail written communications to the Board of Trustees, [Name of Trust], Massachusetts Financial Services Company, 111 Huntington Avenue, Boston, Massachusetts 02199, Attention: Secretary of the Trust. Shareholder communications must (i) be in writing and be signed by the shareholder, (ii) identify the Trust to which they relate and (iii) identify the class and number of shares held by the shareholder. The Secretary is responsible for reviewing all properly submitted shareholder communications. The Secretary shall either (i) provide a copy of each properly submitted shareholder communication to the Board at its next regularly scheduled meeting or (ii) if the Secretary determines that the communication requires more immediate attention, forward the communication to the Chair of the Board promptly after receipt. The Secretary may, in good faith, determine that a shareholder communication should not be provided to the Board because it is ministerial in nature (such as a request for Trust literature, share data or financial information). The Secretary may in such cases forward the communication to the appropriate party or parties at MFS. These procedures do not apply to (i) any communication from an officer or Trustee of the Trust, (ii) any communication from an employee or agent of the Trust, unless such communication is made solely in such employee’s or agent’s capacity as a shareholder or (iii) any shareholder proposal submitted pursuant to Rule 14a-8 under the Securities Exchange Act of 1934, as amended, or any communication made in connection with such a proposal. Each Trust’s Trustees are not required to attend the Trust’s shareholder Meetings or to otherwise make themselves

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available to shareholders for communications, other than pursuant to the aforementioned procedures. The Trustees did not attend the 2023 Annual Meeting of Shareholders.

Each Trust’s Declaration of Trust currently provides that the Trust will indemnify its Trustees and Officers against liabilities and expenses incurred in connection with litigation in which they may be involved because of their offices with the Trust, unless it is finally adjudicated or, in case of a settlement, it has been determined by Trustees not involved in the matter or independent legal counsel, that they have not acted in good faith in the reasonable belief that their actions were in the best interests of the Trust or that they engaged in willful misfeasance or acted with bad faith, gross negligence or reckless disregard of the duties involved in the conduct of their offices.

Trustee Compensation Table

The table below shows the cash compensation paid to the Trustees by each Trust during the fiscal year ended on the date noted (see footnote 1). Interested Trustee(s) receives no compensation from any Trust for their services as Trustee(s).

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⁽¹⁾  Information provided for the MFS Intermediate Income Trust, MFS Multimarket Income Trust, and MFS Municipal Income Trust, is for the fiscal year ended October 31, 2023. Information provided for the MFS Charter Income Trust, MFS Government Markets Income Trust, MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Intermediate High Income Fund, and MFS Investment Grade Municipal Trust is for the fiscal year ended November 30, 2023.

⁽²⁾  For calendar year 2023 for 134 funds that paid Trustee compensation.

TRUST INFORMATION

This section provides certain information about each Trust, including information about its investment adviser and administrator, independent registered public accounting firm, executive officers and the identity of persons holding more than 5% of the outstanding shares of any class of any Trust.

Investment Adviser and Administrator

Each Trust engages as its investment adviser and administrator, MFS, a Delaware corporation with offices at 111 Huntington Avenue, Boston, Massachusetts 02199. MFS and its predecessor organizations have a history of money management dating from 1924. MFS is a subsidiary of Sun Life of Canada (U.S.) Financial Services Holdings, Inc., which in turn is an indirect majority-owned subsidiary of Sun Life Financial Inc. (a diversified financial services company).

Independent Registered Public Accounting Firm

The Independent Registered Public Accounting Firm and fiscal year end for each Trust are listed below:

The Independent Registered Public Accounting Firm has no direct or material indirect interest in a Trust.

Representatives of the applicable Independent Registered Public Accounting Firm are not expected to be present at the Meeting, but they will have the opportunity to make a statement if they wish, and they will be available should any matter arise requiring their presence.

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Each Trust’s Audit Committee submitted the following statement to be included in this Proxy Statement:

The Audit Committee reviewed and discussed the audited financial statements with Trust management. The Audit Committee also discussed with the independent public accounting firm the matters required to be discussed by the applicable requirements of the PCAOB and the Securities and Exchange Commission (“SEC”). The Audit Committee received the written disclosures and the letter from the independent public accounting firm required by the PCAOB regarding the independent public accounting firm’s communications with the Audit Committee regarding independence, and discussed with the independent public accounting firm its independence.

Based on this review and the review of other information and these and other discussions, the Audit Committee recommended to the Board of Trustees that the audited financial statements be included in the Trust’s annual report to shareholders for the Trust’s 2023 fiscal year for filing with the SEC.

The members of each Trust’s Audit Committee are: Steven E. Buller, John A. Caroselli, Peter D. Jones, and Clarence Otis, Jr.

To the extent required by applicable regulations, pre-approval by the Audit Committee of the Board is needed for all audit and permissible non-audit services rendered by the Independent Registered Public Accounting Firm to each Trust and all permissible non-audit services rendered by the Independent Registered Public Accounting Firm to MFS and any entity controlling, controlled by or under common control with MFS that provides ongoing services to a Trust (including MFS Service Center, Inc.) (each, a “Service Affiliate”) if the services relate directly to the operations and financial reporting of such Trust. 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; 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 between such 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.

Schedule A attached hereto includes tables that set forth for each Trust’s two most recent fiscal years, the fees billed by each Trust’s Independent Registered Public Accounting Firm for (a) all audit and non-audit services provided directly to the Trust and (b) those non-audit services provided to each Trust’s Service Affiliates that relate directly to the Trust’s operations and financial reporting under the following captions:

(i) Audit Fees — fees related to the audit and review of the financial statements included in annual reports and registration statements, and other services that are normally provided in connection with statutory and regulatory filings or engagements.

(ii) Audit-Related Fees — 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 (inclusive of annual review of basic maintenance testing associated with the Preferred Shares), attestation reports, comfort letters and internal control reviews.

(iii) Tax Fees — fees associated with tax compliance, tax advice and tax planning, including services relating to the regulated investment company qualification reviews and tax distribution and analysis reviews.

(iv) All Other Fees — fees for products and services provided to a Trust by the Independent Registered Public Accounting Firm other than those reported under “Audit Fees,” “Audit-Related Fees,” and “Tax Fees.”

Schedule A attached hereto also sets forth the aggregate fees billed by each Independent Registered Public Accounting Firm for each Trust’s two most recent fiscal years for non-audit services rendered to each Trust and each Trust’s Service Affiliates.

The Audit Committee has considered whether the provision by each Trust’s Independent Registered Public Accounting Firm of non-audit services to each Trust’s Service Affiliates that were not pre-approved by the Audit Committee because such services did not relate directly to the operations and financial reporting of each Trust was compatible with maintaining the independence of the Independent Registered Public Accounting Firm as each Trust’s principal auditor.

Officers

The officers of the Trusts, as of August 1, 2024, are listed below, together with their principal occupations during the past five years (their titles may have varied during that period). Each officer will hold office until his or her successor is chosen and qualified, or until he or she retires, resigns or is removed from office.

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⁽¹⁾ Date first appointed to serve as Officer of an MFS Fund. From January 2012 through December 2016, Mr. DiLorenzo served as Treasurer of the Funds. From September 2012 through March 2024, Ms. Phillips served as Assistant Treasurer of the MFS Funds. From April 2017 through March 2024, Mr. Clark served as Assistant Treasurer of the Funds.

⁽²⁾ Officers do not serve as directors or trustees of companies required to report to the SEC (i.e., “public companies”).

⁽³⁾ “Interested person” of the Trust within the meaning of the 1940 Act, which is the principal federal law governing investment companies like the Trusts, as a result of position with MFS. The address of MFS is 111 Huntington Avenue, Boston, Massachusetts 02199.

Each Trust’s officers held comparable positions with the 135 funds in the MFS Family of Funds as of July 31, 2024, and with certain affiliates of MFS. The address of each officer is c/o MFS, 111 Huntington Avenue, Boston, Massachusetts 02199.

Interests of Certain Persons

Schedule B attached hereto sets forth, as of July 31, 2024, to the best knowledge of each Trust, the shareholders who beneficially owned more than 5% of the outstanding shares of any class of such Trust.

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FURTHER INFORMATION ABOUT VOTING AND THE MEETING

Manner of Voting Proxies

All proxies received by management will be voted on all matters presented at the Meeting, and if not limited to the contrary, will be voted FOR the election of John A. Caroselli, John P. Kavanaugh, James W. Kilman, Jr., Clarence Otis, Jr., and Laurie J. Thomsen as Trustees of the Trust (if still available for election).

All proxies received, including proxies that reflect (i) broker non-votes (i.e., shares held by brokers or nominees as to which (a) instructions have not been received from the beneficial owners or the persons entitled to vote, and (b) the broker or nominee does not have discretionary voting power on a particular matter), (ii) abstentions or (iii) the withholding of authority to vote for a nominee for election as Trustee, will be counted as shares that are present on a particular matter for purposes of determining the presence of a quorum for that matter. A majority of the outstanding shares of MFS High Income Municipal Trust, MFS Investment Grade Municipal Trust, and MFS Intermediate High Income Fund, entitled to be cast at the Meeting that are present in person or represented by proxy constitutes a quorum, and thirty percent (30%) of the outstanding shares of MFS Charter Income Trust, MFS Government Markets Income Trust, MFS High Yield Municipal Trust, MFS Intermediate Income Trust, MFS Multimarket Income Trust, and MFS Municipal Income Trust entitled to be cast at the Meeting that are present in person or represented by proxy constitutes a quorum. With respect to the election of John P. Kavanaugh and Laurie J. Thomsen as Trustees of MFS High Yield Municipal Trust, and MFS Municipal Income Trust, a quorum also requires thirty percent (30%) of each Trust’s outstanding preferred shares entitled to vote at the Meeting present in person or by proxy. With respect to the election of John P. Kavanaugh and Laurie J. Thomsen as Trustees of MFS High Income Municipal Trust and MFS Investment Grade Municipal Trust, a quorum requires a majority of each Trust’s outstanding preferred shares entitled to vote at the Meeting present in person or by proxy. With respect to the election of Trustees, other than the election of John P. Kavanaugh and Laurie J. Thomsen as Trustees of MFS Municipal Income Trust, neither broker non-votes nor abstentions nor withholding authority to vote have any effect on the outcome of the voting. With respect to the election of John P. Kavanaugh and Laurie J. Thomsen as Trustees of MFS Municipal Income Trust, broker non-votes, abstentions and withholding authority to vote have the effect of a vote against their elections as Trustees.

Each shareholder of a Trust is entitled to one vote for each share of the Trust that such shareholder owns at the close of business on July 31, 2024, on each matter on which the shareholder is entitled to vote. Each fractional share is entitled to a proportionate fractional vote.

Each Trust will reimburse the record holders of its shares for their reasonable expenses incurred in sending proxy material to and obtaining voting instructions from beneficial owners.

Each Trust knows of no other matters to be brought before the Meeting. If, however, because of any unexpected occurrence, any nominee is not available for election or if any other matters properly come before the Meeting, it is each Trust’s intention that proxies not limited to the contrary will be voted in accordance with the judgment of the persons named in the enclosed form of proxy.

Instructions for Voting Proxies

The giving of a proxy will not affect a shareholder’s right to vote in person should the shareholder decide to attend the Meeting. To vote by mail, please mark, sign, date and return the enclosed proxy card following the instructions printed on the card. Please refer to your proxy card for instructions for voting by telephone or internet.

Submission of Proposals

Proposals of shareholders which are intended to be included in the Trust’s Proxy Statement and presented at the 2025 Annual Meeting of Shareholders must be received by the Secretary of the Trust, at the Trusts’ principal office at 111 Huntington Avenue, Boston, Massachusetts, 02199, on or prior to April 25, 2025 for MFS Charter Income Trust, MFS Government Markets Income Trust, MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Intermediate High Income Fund, MFS Intermediate Income Trust, MFS Investment Grade Municipal Trust, MFS Multimarket Income Trust, and MFS Municipal Income Trust. The submission by a shareholder of a proposal for inclusion in the proxy materials does not guarantee that it will be included. Shareholder proposals are subject to certain requirements under the federal securities laws.

A shareholder who wishes to make a proposal at the 2025 Annual Meeting of Shareholders without including the proposal in the Trust’s Proxy Statement must ensure that the proposal is received by the Secretary of the Trust in good order and in compliance with all applicable legal requirements and requirements set forth in the Trust’s By-Laws and Declaration of Trust between May 25, 2025 and July 9, 2025, for MFS Charter Income Trust, MFS Government Markets Income Trust, MFS Intermediate Income Trust, MFS Multimarket Income Trust, and MFS Municipal Income Trust, and June 24, 2025 and July 9, 2025, for MFS High Income Municipal Trust, MFS High Yield Municipal Trust, MFS Intermediate High Income Fund, and MFS Investment Grade Municipal Trust, at the Trust’s principal office at 111 Huntington Avenue, Boston, Massachusetts, 02199.

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The persons named as proxies for the 2025 Annual Meeting of Shareholders will have discretionary authority to vote on all matters presented at the meeting consistent with the SEC’s proxy rules.

Other Business

The Trustees know of no matters other than those described in this proxy statement to be brought before the annual meeting.

Additional Information

The Meeting of shareholders of each Trust is called to be held at the same time as the Meetings of shareholders of each of the other Trusts. It is anticipated that all Meetings will be held simultaneously.

If any shareholder at the Meeting objects to the holding of a simultaneous Meeting and moves for an adjournment of the Meeting to a time promptly after the simultaneous Meetings, the persons named as proxies will vote in favor of such adjournment.

In the event that a quorum is not present for purposes of acting on the proposal, or if sufficient votes on the proposal set forth in the Notice of Annual Meeting of Shareholders are not received by the time of the Meeting, the persons named as proxies may propose one or more adjournments of the Meeting or postponements from time to time, with no other notice than an announcement at the Meeting, in order to permit further solicitation of proxies for the proposal. Any adjournment will require the affirmative vote of a majority of the votes properly cast on the question in person or by proxy at the session of the Meeting to be adjourned. The persons named as proxies will vote in favor of adjournment those proxies that they are entitled to vote in favor of such adjournment and will vote against any such adjournment all other proxies. Your Trust pays the costs of any additional solicitation and of any adjourned session. Any proposals for which sufficient votes in accordance with the Trustees’ recommendations have been received by the time of the Meeting may be acted upon and considered final regardless of whether the Meeting is adjourned to permit additional solicitation with respect to any other proposal.

As part of our effort to maintain a safe and healthy environment at the Meeting, each Trust and the Trustees monitor statements issued by the Centers for Disease Control and Prevention (www.cdc.gov). For that reason, the Trustees reserve the right to reconsider the date, time and/or means of convening each Trust’s meeting. Subject to any restrictions imposed by applicable law, the Trustees may choose to conduct the meeting solely by means of remote communications, or may hold a “hybrid” meeting where some participants attend in person and others attend by means of remote communications. If the Trustees choose to change the date, time and/or means of convening a Trust’s meeting, the Trust will announce the decision to do so in advance, and details on how to participate will be issued by press release and filed with the SEC as additional proxy material.

The expense of the preparation, printing and mailing of the enclosed form of proxy, the Notice and this Proxy Statement, and any tabulation costs, will be borne on a proportional basis by the Trusts.

Annual reports will be sent to shareholders of record of each Trust following each Trust’s fiscal year end. A copy of each Trust’s most recent annual report and semi-annual report may be obtained without charge at closedendfunds.mfs.com or by contacting Computershare, each Trust’s transfer and shareholder servicing agent, 150 Royall Street, Canton, Massachusetts, 02021, or by telephoning toll-free (800) 637-2304 or by email at mfs@computershare.com.

Unless a Trust receives contrary instructions, only one copy of this Proxy Statement will be mailed to a given address where two or more shareholders share that address. If you need a proxy card or additional copies of this Proxy Statement and you are the holder of record of your shares, please contact Computershare at (866) 209-2870, or by email at shareholdermeetings@computershare.com, or at https://www.proxy-direct.com/mfs-33985. If your shares are held in broker street name, please contact your financial intermediary to obtain a voting instruction form or additional copies of this Proxy Statement. A copy of this Proxy Statement is also available at www.mfs.com.

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IT IS IMPORTANT THAT PROXIES BE RETURNED PROMPTLY

MFS^® GOVERNMENT MARKETS INCOME TRUST

MFS^® HIGH INCOME MUNICIPAL TRUST

MFS^® HIGH YIELD MUNICIPAL TRUST

MFS^® INTERMEDIATE HIGH INCOME FUND

MFS^® INTERMEDIATE INCOME TRUST

MFS^® INVESTMENT GRADE MUNICIPAL TRUST

MFS^® MULTIMARKET INCOME TRUST

MFS^® MUNICIPAL INCOME TRUST

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Schedule A

Independent Registered Public Accounting Firm Fees

For each Trust’s last two fiscal years, fees billed by each Trust’s Independent Registered Public Accounting Firm for services provided directly to each Trust:

For each Trust’s last two fiscal years, fees billed by each Trust’s Independent Registered Public Accounting Firm for services provided to the Trust’s Service Affiliates that relate directly to such Trust’s operations and financial reporting:

Schedule A-1

⁽¹⁾  This amount reflects the fees billed to Service Affiliates of each Trust for non-audit services relating directly to the operations and financial reporting of the Trust (portions of which services also related to the operations and financial reporting of all funds within the MFS funds complex).

During the periods indicated in the tables above, no services described under “Audit-Related Fees,” “Tax Fees” or “All Other Fees” were approved pursuant to the de minimis exception set forth in paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

Aggregate fees billed by each Independent Registered Public Accounting Firm, for each Trust’s two most recent fiscal years, for non-audit services rendered to each Trust and each Trust’s Service Affiliates:

Schedule A-2

Schedule B

Interests of Certain Persons

As of July 31, 2024, to the best knowledge of each Trust, the shareholders who beneficially owned more than 5% of the outstanding shares of any class of such Trust are as follows:

Schedule B-1

⁽¹⁾  Amounts reflected are based on disclosure in Schedule 13D and 13G filings made with the SEC as of July 31, 2024.

Schedule B-2

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