N-PX RMIC LIVE 0000063075 XXXXXXXX false false N-1A 06/30/2026 S000002492 true S000002493 true S000002495 true S000002496 true S000002497 true YEAR 2026 MFS SERIES TRUST IX 617-954-5000

111 Huntington Avenue 21st FLoor Boston MA 02199

Christopher R. Bohane Massachusetts Financial Services Company

111 Huntington Avenue Boston MA 02199

FUND NOTICE REPORT 811-02464 549300IJONSVWD5I9F62 Y On behalf of MFS Corporate Bond Fund, MFS Inflation-Adjusted Bond Fund, MFS Limited Maturity Fund, MFS Municipal Limited Maturity Fund, and MFS Total Return Bond Fund (the "funds"), each a series of MFS Series Trust IX, there is no proxy voting activity for the funds, as the funds did not hold any votable positions during the reporting period. 5 S000002492 MFS Corporate Bond Fund 4YECUOR03M3ILWFMIX10 S000002493 MFS Inflation-Adjusted Bond Fund VOHO802M9IKG3IZTEN75 S000002495 MFS Limited Maturity Fund 7ER38PJ2TK60L3Y32478 S000002496 MFS Municipal Limited Maturity Fund SQTUQH9YHVBM75PSCE54 S000002497 MFS Total Return Bond Fund FJAEEQMSDDUK9QL2E558 MFS SERIES TRUST IX David DiLorenzo David DiLorenzo President and Principal Executive Officer 08/26/2026