Company: NMZ
Filing Date: 2025-07-07
Form Type: N-CSRS
Source: 0001193125-25-156000
Chunk: 53

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-07-07
Form: N-CSRS
Chunk 53
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 Company       |     | LLP                |     | PricewaterhouseCoopers |     | Computershare Trust Company, |
| Chicago, IL 60606         |     | One Congress Street   |     | Chicago, IL 60606  |     | LLP                    |     | N.A.                         |
|                           |     | Suite 1               |     |                    |     | One North Wacker Drive |     | 150 Royall Street            |
|                           |     | Boston, MA 02114-2016 |     |                    |     | Chicago, IL 60606      |     | Canton, MA 02021             |
|                           |     |                       |     |                    |     |                        |     | (800) 257-8787               |

Portfolio of Investments InformationEach Fund is required to file its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year as an exhibit to its report on Form N-PORT.You may obtain this information on the SEC’s website at http://www.sec.gov. Nuveen Funds’ Proxy Voting InformationYou may obtain (i) information regarding how each fund voted proxies relating to portfolio securities held during the most recent twelve-month period ended June 30, without charge, upon request, by calling Nuveen toll-free at (800) 257-8787or on Nuveen’s website at www.nuveen.com and (ii) a description of the policies and procedures that each fund used to determine how to vote proxies relating to portfolio securities without charge, upon request, by calling Nuveen toll-free at (800) 257-8787.You may also obtain this information directly from the SEC. Visit the SEC on-lineat http://www.sec.gov. CEO Certification DisclosureEach Fund’s Chief Executive Officer (CEO) has submitted to the New York Stock Exchange (NYSE) the annual CEO certification as required by Section 303A.12(a) of the NYSE Listed Company Manual. Each Fund has filed with the SEC the certification of its CEO and Chief 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