Western Asset HIO names SVP as reporting owner

Initial Form 3 for HIO identifies Brett Michael Mossman as a Senior Vice President/Investment Manager but shows no reported holdings.

Rhea-AI Filing Summary

WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. (HIO) reported an initial statement of beneficial ownership on Form 3 for Brett Michael Mossman. He is identified as a Senior Vice President/Investment Manager in relation to the fund. The filing does not list any specific securities holdings or transactions.

FAQ

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

What does this Form 3 filing report for HIO?

It reports an initial statement of beneficial ownership for Brett Michael Mossman in relation to WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. (HIO). He is identified as a Senior Vice President/Investment Manager, and no specific securities holdings or transactions are listed.

Who is the reporting person in this HIO Form 3?

The reporting person is Brett Michael Mossman, described as a Senior Vice President/Investment Manager in relation to WESTERN ASSET HIGH INCOME OPPORTUNITY FUND INC. (HIO).

Are any HIO share transactions disclosed in this Form 3?

No. The Form 3 filing for HIO shows no reported transactions, with zero buy, sell, acquire, dispose, or other transaction counts in the transaction summary.

Does the HIO Form 3 show any derivative securities for the insider?

No. The filing’s derivative summary is empty, indicating no derivative security positions are reported for Brett Michael Mossman in this Form 3.

Does this Form 3 for HIO indicate use of a Rule 10b5-1 plan?

No. The Form 3 shows the Rule 10b5-1 plan status field as null, and there are no footnotes describing any trading plan, so no plan use is indicated in this filing.

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

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

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
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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 HIGH INCOME OPPORTUNITY FUND INC. [ HIO ]

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)