================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-PX ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-04096 MFS MUNICIPAL SERIES TRUST (Exact name of registrant as specified in charter) 111 Huntington Avenue, Boston, Massachusetts 02199 (Address of principal executive offices) (Zip code) Susan S. Newton Massachusetts Financial Services Company 111 Huntington Avenue Boston, Massachusetts 02199 (Name and address of agents for service) Registrant's telephone number, including area code: (617) 954-5000 Date of fiscal year end: March 31 Date of reporting period: July 1, 2013 - June 30, 2014 ================================================================================ ITEM 1. PROXY VOTING RECORD. ******************************* FORM N-Px REPORT ******************************* ICA File Number: 811-04096 Reporting Period: 07/01/2013 - 06/30/2014 MFS Municipal Series Trust ======================= MFS Alabama Municipal Bond Fund ======================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ======================= MFS Arkansas Municipal Bond Fund ======================= There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ====================== MFS California Municipal Bond Fund ====================== SOUTHERN CALIF PUB PWR AUTH NAT GAS PROJ REV Ticker: Security ID: 842471AY0 Meeting Date: SEP 13, 2013 Meeting Type: Written Consent Record Date: JUL 26, 2013 # Proposal Mgt Rec Vote Cast Sponsor 1 To Approve the Proposed Amendments None For Management Which Are More Fully Described In The Consent Statement Dated July 30, 2013 ======================= MFS Georgia Municipal Bond Fund ======================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ======================= MFS Maryland Municipal Bond Fund ======================= There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ==================== MFS Massachusetts Municipal Bond Fund ===================== MASSACHUSETTS DEV FIN AGY SR LIVING FAC REV Ticker: Security ID: 57563TAF2 Meeting Date: AUG 13, 2013 Meeting Type: Written Consent Record Date: JUL 09, 2013 # Proposal Mgt Rec Vote Cast Sponsor 1 To Accept The Plan None For Management 2 Opt Out Release None Against Management ===================== MFS Mississippi Municipal Bond Fund ====================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ========================== MFS Municipal Income Fund =========================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ======================= MFS New York Municipal Bond Fund ======================= There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ==================== MFS North Carolina Municipal Bond Fund ==================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ===================== MFS Pennsylvania Municipal Bond Fund ===================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ==================== MFS South Carolina Municipal Bond Fund ==================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ====================== MFS Tennessee Municipal Bond Fund ======================= There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ======================= MFS Virginia Municipal Bond Fund ======================= There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ==================== MFS West Virginia Municipal Bond Fund ===================== There is no proxy voting activity for the fund, as the fund did not hold any votable positions during the reporting period. ========== END NPX REPORT SIGNATURES Pursuant to the requirements of 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 MUNICIPAL SERIES TRUST By (Signature and Title): JOHN M. CORCORAN* ------------------------------------- John M. Corcoran, Principal Executive Officer & President Date: August 25, 2014 *By (Signature and Title) /s/ Susan S. Newton ------------------------------------- Susan S. Newton, as attorney-in-fact * Executed by Susan S. Newton on behalf of John M. Corcoran pursuant to a Power of Attorney dated July 8th, 2013. (1) (1) Incorporated by reference to MFS Municipal Series Trust (File Nos. 2-92915 and 811-4096) Post-Effective Amendment No. 56 filed with the SEC via EDGAR on July 26, 2013.