================================================================================ 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 811-02464 ----------------- 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: (617) 954-5000 ----------------- Date of fiscal year end: April 30 and October 31* Date of reporting period: July 1, 2016 - June 30, 2017 * MFS Inflation-Adjusted Bond Fund, a series of the Registrant, has a fiscal year end of October 31. The fiscal year ends of the remaining series of the Registrant are April 30. ================================================================================ ITEM 1. PROXY VOTING RECORD. ******************************* FORM N-Px REPORT ******************************* ICA File Number: 811-02464 Reporting Period: 07/01/2016 - 06/30/2017 MFS Series Trust IX =========================== MFS Corporate Bond Fund ============================ MFS SERIES TRUST XIV - MFS INSTITUTIONAL MONEY MARKET PORTFOLIO Ticker: Security ID: 55291X109 Meeting Date: MAR 23, 2017 Meeting Type: Written Consent Record Date: # Proposal Mgt Rec Vote Cast Sponsor 1.1 Elect Director Steven E. Buller For For Management 1.2 Elect Director John A. Caroselli For For Management 1.3 Elect Director Maureen R. Goldfarb For For Management 1.4 Elect Director David H. Gunning For For Management 1.5 Elect Director Michael Hegarty For For Management 1.6 Elect Director John P. Kavanaugh For For Management 1.7 Elect Director Robert J. Manning For For Management 1.8 Elect Director Clarence Otis, Jr. For For Management 1.9 Elect Director Maryanne L. Roepke For For Management 1.10 Elect Director Robin A. Stelmach For For Management 1.11 Elect Director Laurie J. Thomsen For For Management ====================== MFS Inflation - Adjusted Bond Fund ====================== MFS SERIES TRUST XIV - MFS INSTITUTIONAL MONEY MARKET PORTFOLIO Ticker: Security ID: 55291X109 Meeting Date: MAR 23, 2017 Meeting Type: Written Consent Record Date: # Proposal Mgt Rec Vote Cast Sponsor 1.1 Elect Director Steven E. Buller For For Management 1.2 Elect Director John A. Caroselli For For Management 1.3 Elect Director Maureen R. Goldfarb For For Management 1.4 Elect Director David H. Gunning For For Management 1.5 Elect Director Michael Hegarty For For Management 1.6 Elect Director John P. Kavanaugh For For Management 1.7 Elect Director Robert J. Manning For For Management 1.8 Elect Director Clarence Otis, Jr. For For Management 1.9 Elect Director Maryanne L. Roepke For For Management 1.10 Elect Director Robin A. Stelmach For For Management 1.11 Elect Director Laurie J. Thomsen For For Management ========================== MFS Limited Maturity Fund =========================== MFS SERIES TRUST XIV - MFS INSTITUTIONAL MONEY MARKET PORTFOLIO Ticker: Security ID: 55291X109 Meeting Date: MAR 23, 2017 Meeting Type: Written Consent Record Date: # Proposal Mgt Rec Vote Cast Sponsor 1.1 Elect Director Steven E. Buller For For Management 1.2 Elect Director John A. Caroselli For For Management 1.3 Elect Director Maureen R. Goldfarb For For Management 1.4 Elect Director David H. Gunning For For Management 1.5 Elect Director Michael Hegarty For For Management 1.6 Elect Director John P. Kavanaugh For For Management 1.7 Elect Director Robert J. Manning For For Management 1.8 Elect Director Clarence Otis, Jr. For For Management 1.9 Elect Director Maryanne L. Roepke For For Management 1.10 Elect Director Robin A. Stelmach For For Management 1.11 Elect Director Laurie J. Thomsen For For Management ===================== MFS Municipal Limited Maturity Fund ====================== COMMONWEALTH OF PUERTO RICO Ticker: Security ID: 745145ZA3 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- COMMONWEALTH OF PUERTO RICO Ticker: Security ID: 745145ZB1 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- COMMONWEALTH OF PUERTO RICO Ticker: Security ID: 745145ZC9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- MFS SERIES TRUST XIV - MFS INSTITUTIONAL MONEY MARKET PORTFOLIO Ticker: Security ID: 55291X109 Meeting Date: MAR 23, 2017 Meeting Type: Written Consent Record Date: # Proposal Mgt Rec Vote Cast Sponsor 1.1 Elect Director Steven E. Buller For For Management 1.2 Elect Director John A. Caroselli For For Management 1.3 Elect Director Maureen R. Goldfarb For For Management 1.4 Elect Director David H. Gunning For For Management 1.5 Elect Director Michael Hegarty For For Management 1.6 Elect Director John P. Kavanaugh For For Management 1.7 Elect Director Robert J. Manning For For Management 1.8 Elect Director Clarence Otis, Jr. For For Management 1.9 Elect Director Maryanne L. Roepke For For Management 1.10 Elect Director Robin A. Stelmach For For Management 1.11 Elect Director Laurie J. Thomsen For For Management -------------------------------------------------------------------------------- PUERTO RICO COMWLTH REF-PUB IMPT Ticker: Security ID: 74514LUR6 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO COMWLTH REF-PUB IMPT Ticker: Security ID: 74514LXD4 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 7452686K3 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 7452688D7 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QAL6 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QAM4 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QCM2 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QDC3 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QDD1 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QEH1 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QER9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QLJ9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QLM2 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QLR1 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QLS9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QLU4 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QPJ5 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QSY9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QZC9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO ELECTRIC POWER AUTHORITY Ticker: Security ID: 74526QZJ4 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190AU2 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190AV0 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190E53 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190E61 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190HF8 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190M70 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745190UK2 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745181N52 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745181P35 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO HIGHWAY & TRANSPORTATION AUTHORITY Ticker: Security ID: 745181ZK6 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272CU6 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272EL4 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272ET7 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272EU4 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272EW0 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272EX8 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INDL TOURIST Ticker: Security ID: 745272EY6 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FG3 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FH1 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FN8 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FP3 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FQ1 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FR9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO INFRASTRUCTURE FING AUTH SPL TAX REVENUE Ticker: Security ID: 745220FS7 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO MUN FIN AGY Ticker: Security ID: 745277PD9 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO PUB BLDGS AUTH REVGTD Ticker: Security ID: 745235B75 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO PUB BLDGS AUTH REVGTD Ticker: Security ID: 745235K59 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO PUB BLDGS AUTH REVGTD Ticker: Security ID: 745235TJ0 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- PUERTO RICO PUB BLDGS AUTH REVGTD Ticker: Security ID: 745235TK7 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. -------------------------------------------------------------------------------- UNIVERSITY PUERTO R UNIV Ticker: Security ID: 914811PX6 Meeting Date: MAR 30, 2017 Meeting Type: Written Consent Record Date: NOV 17, 2016 # Proposal Mgt Rec Vote Cast Sponsor 1 By Marking For I Direct The None For Management Institution Holding My Bonds to Transmit and Confirm My Bond Holding Information for Recording In The Registry. By Marking Against My Bonds Shall Be Missing From The Registry. ========================== MFS Total Return Bond Fund ========================== MFS SERIES TRUST XIV - MFS INSTITUTIONAL MONEY MARKET PORTFOLIO Ticker: Security ID: 55291X109 Meeting Date: MAR 23, 2017 Meeting Type: Written Consent Record Date: # Proposal Mgt Rec Vote Cast Sponsor 1.1 Elect Director Steven E. Buller For For Management 1.2 Elect Director John A. Caroselli For For Management 1.3 Elect Director Maureen R. Goldfarb For For Management 1.4 Elect Director David H. Gunning For For Management 1.5 Elect Director Michael Hegarty For For Management 1.6 Elect Director John P. Kavanaugh For For Management 1.7 Elect Director Robert J. Manning For For Management 1.8 Elect Director Clarence Otis, Jr. For For Management 1.9 Elect Director Maryanne L. Roepke For For Management 1.10 Elect Director Robin A. Stelmach For For Management 1.11 Elect Director Laurie J. Thomsen For For Management ========== 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 SERIES TRUST IX By (Signature and Title): David DiLorenzo* ------------------------------------------- David DiLorenzo, President and Principal Executive Officer Date: August 28, 2017 *By (Signature and Title) /s/ Susan A. Pereira ------------------------------------------- Susan A. Pereira, as attorney-in-fact * Executed by Susan A. Pereira on behalf of David DiLorenzo pursuant to a Power of Attorney dated June 1, 2017. (1) (1) Incorporated by reference to MFS Series Trust XIII (File Nos. 2-74959 and 811-03327) Post-Effective Amendment No. 65 filed with the SEC via EDGAR on June 27, 2017.