[Form 4] BANK OF AMERICA CORP /DE/ Insider Trading Activity

Rhea-AI Filing Summary

Bank of America Corporation and its subsidiary Merrill Lynch, Pierce, Fenner & Smith Inc. jointly reported same-day purchase and sale activity in the common stock of Nuveen Municipal High Income Opportunity Fund (NMZ). On 10/09/2025 the Reporting Persons bought 190 shares at $10.62 per share and sold the same 190 shares at $10.62, leaving 0 shares beneficially owned after the transactions. The filing lists the ownership as indirect through Merrill Lynch and includes standard disclaimers that each Reporting Person disclaims beneficial ownership except for any pecuniary interest. The statement notes that, without conceding greater-than-10% status, any profit potentially recoverable under short-swing rules would be remitted to the issuer if required.

Positive

• Timely disclosure of insider transactions by Bank of America and Merrill Lynch on 10/09/2025
• Zero net position after identical buy and sell (190 shares bought and sold), reducing ongoing ownership concerns

Negative

• Potential short-swing recovery language indicates proceeds may be remitted if Section 16(b) applies
• Indirect ownership via subsidiary may complicate beneficial ownership clarity for investors

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

BANK OF AMERICA CORP /DE/

(Last) (First) (Middle)

BANK OF AMERICA CORPORATE CENTER

100 N TRYON ST

(Street)

CHARLOTTE NC 28255

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND [ NMZ ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/09/2025

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
COMMON STOCK(1)(2)(3)	10/09/2025		P		190	A	$10.62	190	I	See Footnotes(1)(2)(3)
COMMON STOCK(1)(2)(3)	10/09/2025		S		190	D	$10.62	0	I	See Footnotes(1)(2)(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

BANK OF AMERICA CORP /DE/

(Last) (First) (Middle)

BANK OF AMERICA CORPORATE CENTER

100 N TRYON ST

(Street)

CHARLOTTE NC 28255

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

MERRILL LYNCH, PIERCE, FENNER & SMITH INC.

(Last) (First) (Middle)

ONE BRYANT PARK

(Street)

NEW YORK NY 10036

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. This statement is jointly filed by Bank of America Corporation and Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch") (collectively, the "Reporting Persons"). Bank of America Corporation holds an indirect interest in the securities listed in this Report by virtue of its 100% ownership of its subsidiary Merrill Lynch. Each Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Securities Exchange Act of 1934 (the "Exchange Act"), or for any other purpose.

2. Each Reporting Person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section 13(d) of the Exchange Act or any other purpose, (i) acting (or has agreed or is agreeing to act together with any other person) as a partnership, limited partnership, syndicate or other group for the purpose of acquiring, holding or disposing of securities of the Issuer or otherwise with respect to the Issuer or any securities of the Issuer or (ii) a member of any group with respect to the Issuer or any securities of the Issuer.

3. Without conceding its status as a greater than 10% beneficial owner or that the reported transactions are subject to disclosure under Section 16(a) of the Exchange Act or short-swing profit recovery under Section 16(b) of the Exchange Act, the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that the Reporting Persons were greater than 10% beneficial owners and the transactions were subject to Section 16(b) will be remitted to the Issuer.

	BANK OF AMERICA CORP /DE/ By: Its: Authorized Signatory Andres Ortiz	10/10/2025
	MERRIL LYNCH, PIERCE, FENNER & SMITH INC. By: Its: Authorized Signatory Andres Ortiz	10/10/2025
	** 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 4 (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.
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FAQ

What transactions did Bank of America (BAC) report on Form 4?

The reporting persons bought 190 shares and sold 190 shares of NMZ on 10/09/2025 at $10.62 per share, resulting in 0 shares owned.

Who filed the Form 4 for these NMZ transactions?

The Form 4 was jointly filed by Bank of America Corporation and Merrill Lynch, Pierce, Fenner & Smith Inc., with Merrill Lynch held 100% by Bank of America.

Did the reporting persons retain any NMZ shares after the trades?

No. The filing shows 0 shares beneficially owned following the reported transactions.

Does the filing indicate any admission of beneficial ownership by Bank of America or Merrill Lynch?

No. Each reporting person expressly disclaims beneficial ownership except to the extent of any pecuniary interest.

Is there any mention of short-swing profit remittance in the filing?

Yes. The filing states that any profit potentially recoverable under Section 16(b) will be remitted to the issuer if applicable.