MHF names SVP as reporting insider, no holdings

Initial Form 3 for a senior vice president and investment manager of MHF reports no transactions or equity holdings.

Available on EDGAR 09/11/2026 - 01:19 PM EDT Accepted by SEC EDGAR 09/11/2026 - 01:18 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

WESTERN ASSET MUNICIPAL HIGH INCOME FUND INC. (MHF) filed an initial ownership report on Form 3 for Brett Michael Mossman. He is identified as a Senior Vice President/Investment Manager but is not listed as a director or ten percent owner. The filing reports no transactions and no current holdings.

Key Terms

Form 3, ten percent owner, reporting person

3 terms

Form 3 regulatory

"filed an initial ownership report on Form 3 for Brett Michael Mossman"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

ten percent owner regulatory

"He is identified as not a director or ten percent owner"

reporting person regulatory

"reports that Brett Michael Mossman is a reporting person but shows no transactions"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the MHF Form 3 filed for Brett Michael Mossman report?

It reports that Brett Michael Mossman, a Senior Vice President/Investment Manager related to MHF, is a reporting person but shows no transactions and no current holdings in the issuer’s securities at the time of the filing.

Is the reporting person on the MHF Form 3 a director or ten percent owner?

No. The Form 3 indicates that Brett Michael Mossman is not a director and not a ten percent owner of MHF. He is identified instead in the “other” category as a Senior Vice President/Investment Manager.

Does the MHF Form 3 show any insider buying or selling activity?

No. The transaction summary shows zero buy, zero sell, and zero acquire or dispose transactions, meaning there is no reported insider trading activity for Brett Michael Mossman in this filing.

Are any derivative securities reported for the MHF insider on this Form 3?

No. The Form 3 lists no derivative transactions and the derivative holdings summary is empty, so no options, warrants, or other derivative positions are reported for Brett Michael Mossman.

Does the MHF Form 3 indicate use of a Rule 10b5-1 trading plan?

No. The document-level indicator for Rule 10b5-1 plans is not marked, and there are no transactions that would otherwise reference such a plan in this Form 3.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Mossman Brett Michael

(Last) (First) (Middle)

FRANKLIN TEMPLETON

ONE MADISON AVENUE, 17TH FLOOR

(Street)

NEW YORK NEW YORK 10010

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/01/2026

3. Issuer Name and Ticker or Trading Symbol
WESTERN ASSET MUNICIPAL HIGH INCOME FUND INC. [ MHF ]

3a. Foreign Trading Symbol

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

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

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Senior Vice President/Inv. Mgr

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:

Remarks:

No securities are beneficially owned.

	/s/Marc A. De Oliveira by Power of Attorney for Brett M. Mossman	09/11/2026
	** 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.
* Form 3: SEC 1473 (03-26)