<SEC-DOCUMENT>0001193125-17-238148-index.html : 20170727 <SEC-HEADER>0001193125-17-238148.hdr.sgml : 20170727 <ACCEPTANCE-DATETIME>20170727134205 ACCESSION NUMBER: 0001193125-17-238148 CONFORMED SUBMISSION TYPE: N-CSRS PUBLIC DOCUMENT COUNT: 12 CONFORMED PERIOD OF REPORT: 20170531 FILED AS OF DATE: 20170727 DATE AS OF CHANGE: 20170727 EFFECTIVENESS DATE: 20170727 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MFS HIGH YIELD MUNICIPAL TRUST CENTRAL INDEX KEY: 0000809844 IRS NUMBER: 042950868 STATE OF INCORPORATION: MA FISCAL YEAR END: 1130 FILING VALUES: FORM TYPE: N-CSRS SEC ACT: 1940 Act SEC FILE NUMBER: 811-04992 FILM NUMBER: 17985519 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 MUNICIPAL INCOME TRUST DATE OF NAME CHANGE: 19920703 </SEC-HEADER> <DOCUMENT> <TYPE>N-CSRS <SEQUENCE>1 <FILENAME>d514100dncsrs.htm <DESCRIPTION>MFS HIGH YIELD MUNICIPAL TRUST N-CSRS <TEXT> Document 1 - file: d514100dncsrs.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.(12)(A)(1) <SEQUENCE>2 <FILENAME>d514100dex9912a1.htm <DESCRIPTION>CODE OF ETHICS <TEXT> Document 2 - file: d514100dex9912a1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>3 <FILENAME>d514100dex99cert.htm <DESCRIPTION>SECTION 302 CERTIFICATIONS <TEXT> Document 3 - file: d514100dex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>4 <FILENAME>d514100dex99906cert.htm <DESCRIPTION>SECTION 906 CERTIFICATIONS <TEXT> Document 4 - file: d514100dex99906cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>g514100art_03.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: g514100art_03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>6 <FILENAME>g514100ernst_youngllp.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 6 - file: g514100ernst_youngllp.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>7 <FILENAME>g514100g82k67.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 7 - file: g514100g82k67.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>g514100g83t20.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: g514100g83t20.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>g514100logo_05.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 9 - file: g514100logo_05.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>g514100manning_photo.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 10 - file: g514100manning_photo.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>g514100manning_sig.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: g514100manning_sig.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>g514100snap0001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 12 - file: g514100snap0001.jpg
</DOCUMENT> </SEC-DOCUMENT>