MFS High Yield Municipal Trust (NYSE: CMU) director lists no stake

Rhea-AI Filing Summary

MFS High Yield Municipal Trust insider filing shows no current stake. An initial Form 3 for MFS High Yield Municipal Trust (ticker CMU) reports that Thomas P. Murphy, identified as a director of the fund’s advisor, does not beneficially own any of the trust’s securities. The filing explicitly states that no securities are beneficially owned, and there are no non-derivative or derivative holdings listed.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

MURPHY THOMAS P.

(Last) (First) (Middle)

MFS INVESTMENT MANAGEMENT

111 HUNTINGTON AVENUE

(Street)

BOSTON MA 02199

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/01/2026

3. Issuer Name and Ticker or Trading Symbol
MFS HIGH YIELD MUNICIPAL TRUST [ CMU ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			DIRECTOR OF ADVISOR

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	CHRISTOPHER R. BOHANE	01/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does the latest Form 3 for CMU disclose about insider ownership?

The Form 3 for MFS High Yield Municipal Trust (CMU) discloses that the reporting person, Thomas P. Murphy, currently has no beneficial ownership of the trust’s securities.

Who is the reporting person on this CMU Form 3 filing?

The reporting person is Thomas P. Murphy, who is identified in the filing as a director of the advisor to MFS High Yield Municipal Trust.

Are any MFS High Yield Municipal Trust (CMU) shares reported as owned in this Form 3?

No. The filing states in the Explanation of Responses that no securities are beneficially owned, and both the non-derivative and derivative tables show no holdings.

Does the CMU Form 3 show any derivative securities held by the reporting person?

No. The section for derivative securities such as options or warrants contains no entries, consistent with the statement that no securities are beneficially owned.

What is the relationship of the reporting person to MFS High Yield Municipal Trust (CMU)?

The Form 3 indicates that Thomas P. Murphy is an “Other” reporting person, specified as a director of advisor to MFS High Yield Municipal Trust.

What event date is associated with this CMU Form 3 insider filing?

The Form 3 lists a Date of Event Requiring Statement of 01/01/2026, which is the date as of which the beneficial ownership status is reported.