Company: NMI
Filing Date: 2025-07-07
Form Type: N-CSRS
Source: 0001193125-25-155990
Chunk: 31

Company: NUVEEN MUNICIPAL INCOME FUND INC
Filing Date: 2025-07-07
Form: N-CSRS
Chunk 31
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 Financial Officer required by Section 302 of the Sarbanes-Oxley Act. Common Share RepurchasesEach Fund intends to repurchase, through its open-market share repurchase program, shares of its own common stock at such times and in such amounts as is deemed advisable. During the period covered by this report, each Fund repurchased shares of its common stock as shown in the accompanying table. Any future repurchases will be reported to shareholders in the next annual or semi-annual report.

|                           |     | NUV |   |     | NUW |   |     | NMI |   |
| Common shares repurchased |     |     | 0 |     |     | 0 |     |     | 0 |

FINRA BrokerCheck:The Financial Industry Regulatory Authority (FINRA) provides information regarding the disciplinary history of FINRA member firms and associated investment professionals. This information as well as an investor brochure describing FINRA BrokerCheck is available to the public by calling the FINRA BrokerCheck Hotline number at (800) 289-9999or by visiting www.FINRA.org. 74

Glossary of Terms Used in this Report

(Unaudited)

Average Annual Total Return:This is a commonly used method to express an investment’s performance over a particular, usually multi-year time period. It
expresses the return that would have been necessary each year to equal the investment’s actual cumulative performance (including change in NAV or offer price and reinvested dividends and capital gains distributions, if any) over the time period
being considered.

Duration:Duration is a measure of the expected period over which a bond’s principal and interest will be paid, and consequently is a
measure of the sensitivity of a bond’s or bond fund’s value to changes when market interest rates change. Generally, the longer a bond or fund’s duration, the more the price of the bond or fund will change as interest rates change.

Industrial Development Revenue Bond (IDR):A unique type of revenue bond issued by a state or local government agency on behalf of a private sector company
and intended to build or acquire factories or other heavy equipment and tools.

Inverse Floating Rate Securities:Inverse floating rate securities, are the
residual interest in a tender option bond (TOB) trust, sometimes referred to as “inverse floaters”, are created by depositing a municipal bond, typically with a fixed interest rate, into a special purpose trust. This trust, in turn,
(a) issues floating rate certificates typically paying short-term tax