Nuveen Municipal EVP files initial insider report

Nuveen Municipal Income Fund Inc. filed an initial insider ownership report for Joseph Castro, who serves as Executive Vice President and Chief Risk & Compliance Officer.

Accepted by SEC EDGAR 02/23/2026 - 01:22 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Nuveen Municipal Income Fund Inc. filed an initial insider ownership report for Joseph Castro, who serves as Executive Vice President and Chief Risk & Compliance Officer. The Form 3 does not list any share transactions, and simply establishes his status as an officer subject to insider reporting rules.

FAQ

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

What does the Form 3 filing for NUVEEN MUNICIPAL INCOME FUND (NMI) show?

The Form 3 filing shows that Joseph Castro is now a reporting insider of Nuveen Municipal Income Fund as EVP, Chief Risk & Compliance Officer. It is an initial ownership statement and does not list any specific share transactions or holdings in the excerpt provided.

Who is the insider named in the NMI Form 3 filing?

The insider is Joseph Castro, identified as Executive Vice President and Chief Risk & Compliance Officer of Nuveen Municipal Income Fund. This role makes him a Section 16 reporting person, requiring disclosure of his beneficial ownership and future transactions in the fund’s securities.

Does the NMI Form 3 for Joseph Castro report any stock purchases or sales?

The Form 3 excerpt for Joseph Castro shows no reported stock purchases or sales. All transaction counts and share amounts are zero, indicating this filing functions purely as an initial insider registration rather than a record of recent trading activity.

Why is a Form 3 important for Nuveen Municipal Income Fund investors?

Form 3 identifies individuals who must publicly report their holdings and future trades in Nuveen Municipal Income Fund. Knowing that Joseph Castro, the EVP and Chief Risk & Compliance Officer, is a reporting insider adds transparency around potential insider activity and governance oversight.

What transaction direction is indicated in the NMI Form 3 summary data?

The transaction summary shows zero buy, sell, acquire, or dispose events, with a net buy/sell direction labeled neutral. This confirms the filing is an initial ownership statement for Joseph Castro, rather than a disclosure of current trading transactions in NMI shares.

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^*

Castro Joseph

(Last) (First) (Middle)

333 W. WACKER DRIVE

SUITE 2900

(Street)

CHICAGO IL 60606

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/16/2025

3. Issuer Name and Ticker or Trading Symbol
NUVEEN MUNICIPAL INCOME FUND INC [ NMI ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Risk & Compliance

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:

Remarks:

castropoa.txt

No securities are beneficially owned.

	Mark L. Winget/ Signed Under Power of Attorney	10/16/2025
	** 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 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.