# EDGAR Filing Document

**Accession Number:** 0000801961
**File Stem:** 0000930413-26-000394
**Filing Date:** 2026-2
**Character Count:** 4735
**Document Hash:** dca6695497dd9d4f3af5f0149b039792
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000930413-26-000394.hdr.sgml**: 20260211

**ACCESSION NUMBER**: 0000930413-26-000394

**CONFORMED SUBMISSION TYPE**: 425

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260211

**DATE AS OF CHANGE**: 20260211

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS HIGH INCOME MUNICIPAL TRUST
- **CENTRAL INDEX KEY:** 0000845606

**ORGANIZATION NAME:**
- **EIN:** 043039022
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** 425
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 811-05754
- **FILM NUMBER:** 26619260

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 24TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 24TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COLONIAL HIGH INCOME MUNICIPAL TRUST
- **DATE OF NAME CHANGE:** 19920703
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS MUNICIPAL INCOME TRUST
- **CENTRAL INDEX KEY:** 0000801961

**ORGANIZATION NAME:**
- **EIN:** 046554822
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 425

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 24TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 24TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**Filed by MFS Municipal Income Trust<br> pursuant to Rule 425 under the Securities Act of 1933<br> and deemed filed pursuant to Rule 14a-12<br> under the Securities Exchange Act of 1934<br> Subject Companies:**

**MFS High Income Municipal Trust<br> File No.: 811-05754**

**MFS High Yield Municipal Trust<br> File No.: 811-04992**

**MFS Investment Grade Municipal Trust**

**File No.: 811-05785**

**Date: December February 11, 2026**

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| | |
|:---|:---|
| MFS Investment Management<br> 111 Huntington Avenue<br> Boston, MA 02199 | ![](x1_c115552x1x1.jpg) |

---

February 2026

**IMPORTANT NOTIFICATION:**

Reorganization of MFS Closed-End Funds

**To Vote, Call 800-848-3402**

On December 11, 2025, the Board of Trustees of the MFS closed-end funds approved proposals to reorganize seven of the closed-end funds into two existing closed-end funds, as well as the appointment of a new investment adviser and board of trustees. Proxy materials have been mailed seeking approval from relevant fund shareholders for the following proposals (click the links for more information):

Seven MFS closed-end funds will be reorganized into two current MFS closed-end funds, as follows:

**<u>Taxable Fixed Income Funds "Taxable Mergers"</u>: <u>https://vote.proxyonline.com/MFS/docs/taxablefunds.pdf</u>** 

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Acquired Funds** |  | &nbsp;&nbsp;**Acquiring Fund** |
| &nbsp;&nbsp; MFS Charter Income Trust ("MCR")<br> MFS Intermediate High Income Fund ("CIF")<br> MFS Government Markets Income Trust ("MGF")<br> MFS Intermediate Income Trust ("MIN") | &nbsp;&nbsp;Merge Into | &nbsp;&nbsp;MFS Multi-Market Income Trust ("MMT") |
| **<u>Municipal Bond Funds "Municipal Mergers"</u>: <u>https://vote.proxyonline.com/MFS/docs/munifunds.pdf</u>**  | **<u>Municipal Bond Funds "Municipal Mergers"</u>: <u>https://vote.proxyonline.com/MFS/docs/munifunds.pdf</u>**  | **<u>Municipal Bond Funds "Municipal Mergers"</u>: <u>https://vote.proxyonline.com/MFS/docs/munifunds.pdf</u>**  |
| &nbsp;&nbsp;**Acquired Funds** |  | &nbsp;&nbsp;**Acquiring Fund** |
| &nbsp;&nbsp; MFS High Income Municipal Trust ("CXE")<br> MFS High Yield Municipal Trust ("CMU")<br> MFS Investment Grade Municipal Trust ("CXH") | &nbsp;&nbsp;Merge Into | &nbsp;&nbsp;MFS Municipal Income Trust ("MFM") |

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**<u>abrdn Inc. ("Aberdeen"), a global specialist asset manager, will become the investment adviser for MFM and MMT, and a new board of trustees will be appointed for MFM and MMT: https://vote.proxyonline.com/MFS/docs/proxy.pdf</u>**

**The board of trustees of each MFS closed-end fund believes that these proposals are in the best long-term interests of each MFS closed-end fund's shareholders and therefore recommend a vote FOR the proposal.**

We appreciate your continued confidence in MFS and welcome the opportunity to discuss these updates in further detail. For more information, please reach out to your MFS relationship manager or sales contact(s) at 1-800-343-2829. Shareholders may contact their investment professional or call **EQ Fund Solutions** directly regarding the proxy at **800-848-3402.**