<SEC-DOCUMENT>0000912938-23-000451-index.html : 20231006
<SEC-HEADER>0000912938-23-000451.hdr.sgml : 20231006
<ACCEPTANCE-DATETIME>20231006160552
ACCESSION NUMBER:		0000912938-23-000451
CONFORMED SUBMISSION TYPE:	SC TO-I
PUBLIC DOCUMENT COUNT:		11
FILED AS OF DATE:		20231006
DATE AS OF CHANGE:		20231006

SUBJECT COMPANY:	

	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:		SC TO-I
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-84331
		FILM NUMBER:		231314268

	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

FILED BY:		

	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:		SC TO-I

	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>SC TO-I
<SEQUENCE>1
<FILENAME>cmu_sctoi.htm
<TEXT>
Document 1 - file: cmu_sctoi.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(A)(1)(I)
<SEQUENCE>2
<FILENAME>offertopurchase.htm
<TEXT>
Document 2 - file: offertopurchase.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(A)(1)(II)
<SEQUENCE>3
<FILENAME>letteroftransmittal.htm
<TEXT>
Document 3 - file: letteroftransmittal.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(A)(1)(III)
<SEQUENCE>4
<FILENAME>lettertobrokers.htm
<TEXT>
Document 4 - file: lettertobrokers.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(A)(1)(IV)
<SEQUENCE>5
<FILENAME>lettertoclients.htm
<TEXT>
Document 5 - file: lettertoclients.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(A)(1)(V)
<SEQUENCE>6
<FILENAME>noticeofwithdrawal.htm
<TEXT>
Document 6 - file: noticeofwithdrawal.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(A)(5)(III)
<SEQUENCE>7
<FILENAME>press_release.htm
<TEXT>
Document 7 - file: press_release.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-12.(D)
<SEQUENCE>8
<FILENAME>tender_offer.htm
<TEXT>
Document 8 - file: tender_offer.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>9
<FILENAME>fee_table.htm
<DESCRIPTION>FILING FEES TABLE
<TEXT>
Document 9 - file: fee_table.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>image0.jpg
<TEXT>
Document 10 - file: image0.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>image00001.jpg
<TEXT>
Document 11 - file: image00001.jpg

</DOCUMENT>
</SEC-DOCUMENT>