Bank of America reports 23.2% stake in NMZ preferreds

Bank of America Corporation and Banc of America Preferred Funding Corp filed Amendment No. 9 to update their Schedule 13D for Nuveen Municipal High Income Opportunity Fund’s Adjustable Rate MuniFund Term Preferred Shares.

Rhea-AI Filing Summary

Bank of America Corporation and Banc of America Preferred Funding Corp filed Amendment No. 9 to update their Schedule 13D for Nuveen Municipal High Income Opportunity Fund’s Adjustable Rate MuniFund Term Preferred Shares. They report beneficial ownership of 1,870 preferred shares, representing 23.2% of this preferred class, after the issuer’s reorganization and the April 27, 2026 issuance of new Series 1 Variable Rate Demand Preferred Shares.

Key Figures

Beneficial ownership: 1,870 preferred shares Ownership percentage: 23.2% of class Shared voting power: 1,870 shares +2 more

5 metrics

Beneficial ownership 1,870 preferred shares Adjustable Rate MuniFund Term Preferred Shares reported by each reporting person

Ownership percentage 23.2% of class Percent of preferred share class represented by 1,870 shares

Shared voting power 1,870 shares Number of shares with shared voting power for each reporting person

Shared dispositive power 1,870 shares Number of shares with shared dispositive power for each reporting person

Event date 04/27/2026 Date of event requiring the amended Schedule 13D filing

Key Terms

ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES, beneficially owned, shared voting power, shared dispositive power, +2 more

6 terms

ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES financial

"Title of Class of Securities: ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES"

beneficially owned financial

"Aggregate amount beneficially owned by each reporting person 1,870.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

shared voting power financial

"Shared Voting Power 1,870.00"

Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.

shared dispositive power financial

"Shared Dispositive Power 1,870.00"

reorganization financial

"as a result of the reorganization of Nuveen New Jersey Quality Municipal Income Fund and Nuveen Pennsylvania Quality Municipal Income Fund"

Variable Rate Demand Preferred Shares financial

"the Issuer issued new Series 1 Variable Rate Demand Preferred Shares on April 27, 2026"

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

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Accepted by SEC EDGAR 04/29/2026 - 12:13 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 9)

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

(Name of Issuer)

ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES

(Title of Class of Securities)

670682111 (CUSIP Number) 670682889 (CUSIP Number)

Bank of America Corporation
Bank of America Corporate Center, 100 N. Tryon Street
Charlotte, NC, 28255
980-825-9256

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

04/27/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): 670682111, 670682889

1

Name of reporting person

BANK OF AMERICA CORP /DE/

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,870.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,870.00

11

Aggregate amount beneficially owned by each reporting person

1,870.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

23.2 %

14

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13D

CUSIP Number(s): 670682111, 670682889

1

Name of reporting person

Banc of America Preferred Funding Corp

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,870.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,870.00

11

Aggregate amount beneficially owned by each reporting person

1,870.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

23.2 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: ADJUSTABLE RATE MUNIFUND TERM PREFERRED SHARES
(b)	Name of Issuer: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
(c)	Address of Issuer's Principal Executive Offices: 333 W WACKER DRIVE, CHICAGO, ILLINOIS , 60606.
Item 1 Comment: This Amendment No. 9 (this "Amendment") amends, as set forth below, the statement on Schedule 13D, dated December 21, 2012 and filed with the SEC on December 28, 2012, (as amended to the date hereof, the "Original Schedule 13D"), for Bank of America Corporation ("BAC") and Banc of America Preferred Funding Corporation ("BAPFC") (collectively, the "Reporting Persons") with respect to the Adjustable Rate Muni Fund Term Preferred Shares ("AMTP Shares") of Nuveen Municipal High Income Opportunity Fund (the "Issuer"). This amendment is being filed to report a change in the Reporting Persons' ownership percentage of the Issuer's class of preferred shares as a result of the reorganization of Nuveen New Jersey Quality Municipal Income Fund and Nuveen Pennsylvania Quality Municipal Income Fund with and into the Issuer (the "reorganization") and in connection with such reorganization the Issuer issued new Series 1 Variable Rate Demand Preferred Shares on April 27, 2026
Item 2.	Identity and Background
(c)	Item 2(c) of the Original Schedule 13D is hereby amended by deleting Schedule I referenced therein and replacing it with Schedule I included with this Amendment.
(d)	Item 2(d) of the Original Schedule 13D is hereby amended by deleting Schedule II referenced therein and replacing it with Schedule II included with this Amendment.
Item 7.	Material to be Filed as Exhibits.
	Item 7 of the Original Schedule 13D is hereby amended by deleting Exhibit 99.1 and Exhibit 99.2 thereto and the insertion of the following exhibits: Exhibit Description of Exhibit 99.1 Joint Filing Agreement 99.2 Power of Attorney 99.7 Schedule I 99.8 Schedule II

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BANK OF AMERICA CORP /DE/

Signature:	/s/ Andres Ortiz
Name/Title:	Authorized Signatory
Date:	04/29/2026

Banc of America Preferred Funding Corp

Signature:	/s/ Andres Ortiz
Name/Title:	Authorized Signatory
Date:	04/29/2026