MFS Municipal Series Trust

03/05/2026 | Press release | Distributed by Public on 03/05/2026 07:55

Prospectus by Investment Company (Form 497)

SUPPLEMENT TO THE PROSPECTUS

The date of this supplement is March 5, 2026.

MFS® ALABAMA MUNICIPAL BOND FUND

MFS® NEW YORK MUNICIPAL BOND FUND

MFS® ARKANSAS MUNICIPAL BOND FUND

MFS® NORTH CAROLINA MUNICIPAL BOND FUND

MFS® CALIFORNIA MUNICIPAL BOND FUND

MFS® PENNSYLVANIA MUNICIPAL BOND FUND

MFS® GEORGIA MUNICIPAL BOND FUND

MFS® SOUTH CAROLINA MUNICIPAL BOND FUND

MFS® MARYLAND MUNICIPAL BOND FUND

MFS® VIRGINIA MUNICIPAL BOND FUND

MFS® MASSACHUSETTS MUNICIPAL BOND FUND

MFS® WEST VIRGINIA MUNICIPAL BOND FUND

MFS® MISSISSIPPI MUNICIPAL BOND FUND

Effective March 31, 2026, the following is added to the table in the sub-section entitled "Portfolio Manager(s)" under the main heading entitled "Summary of Key Information":

Portfolio Manager

Since

Title

Thomas Compton

March 2026

Investment Officer of MFS

Effective March 31, 2026, the following is added to the table in the sub-section entitled "Portfolio Manager(s)" under the main heading entitled "Management of the Fund":

Portfolio Manager

Primary Role

Five Year History

Thomas Compton

Portfolio Manager

Employed in the investment area of MFS since 2015

MULTI-SUP-II-030526

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MFS Municipal Series Trust published this content on March 05, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on March 05, 2026 at 13:55 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]