Company: NMZ
Filing Date: 2025-06-30
Form Type: DEF 14A
Source: 0001193125-25-152769
Chunk: 47

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-06-30
Form: DEF 14A
Chunk 47
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 ALL EXCEPT 01 Nuveen AMT-FreeMunicipal Credit Income Fund ☐ ☐ ☐ 02 Nuveen AMT-FreeQuality Municipal Income Fund ☐ ☐ ☐ 03 Nuveen Dynamic Municipal Opportunities Fund ☐ ☐ ☐ 04 Nuveen Municipal Credit Income Fund ☐ ☐ ☐ 05 Nuveen Municipal High Income Opportunity Fund ☐ ☐ ☐ 06 Nuveen NY AMT-FreeQuality Municipal Income Fund ☐ ☐ ☐ 07. Nuveen New York Quality Municipal Income Fund ☐ ☐ ☐ 08. Nuveen Quality Municipal Income Fund ☐ ☐ ☐ IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS for the Annual Meeting of Shareholders on August 14, 2025. The Joint Proxy Statement for this meeting is available at: https://www.nuveen.com/en-us/investments/proxy-information#closed-end-fundsAuthorized Signatures — This section must be completed for your vote to be counted.— Sign and Date Below Note: Please sign exactly as your name(s) appear(s) on this proxy card, and date it. When shares are held jointly, each holder should sign. When signing as attorney, executor, administrator, trustee, guardian, officer of corporation or other entity or in another representative capacity, please give the full title under the signature. Date (mm/dd/yyyy) — Please print date below Signature 1 — Please keep signature within the box Signature 2 — Please keep signature within the box Scanner bar code xxxxxxxxxxxxxx NUV 34604 xxxxxxxx

PO Box 43131 Providence, RI 02940-3131 Please detach at perforation before mailing. NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND THIS PROXY IS SOLICITED BY THE BOARD OF TRUSTEES FOR AN ANNUAL MEETING OF SHAREHOLDERS, AUGUST 14, 2025 PREFERRED SHARES The Annual Meeting of Shareholders will be held Thursday, August 14, 2025 at 2:00 p.m. Central time virtually via live webcast. At this meeting, you will be asked to vote on the election of board members as described in the Joint Proxy Statement attached. The undersigned, revoking previous proxies, hereby appoints Kevin J. McCarthy, John M. McCann and Mark L. Winget, and each of them, with full power of substitution, proxies for the