Company: NMZ
Filing Date: 2025-11-18
Form Type: N-14 8C/A
Source: 0001999371-25-018025
Chunk: 237

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-11-18
Form: N-14 8C/A
Chunk 237
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-owned subsidiary of Nuveen Municipal High Income Opportunity Fund (the “Acquiring Fund”), and (ii) the conversion of the issued and outstanding common and preferred shares of beneficial interest of the Target Fund into newly issued common and preferred shares of beneficial interest, par value $0.01 per share, of the Acquiring Fund. | ☐   | ☐       | ☐       |

| 3b. | Election of Board Members:                                                                                                                                                                                                        | FOR | WITHHOLD | FOR ALL |
|     | Class II:                                                                                                                                                                                                                         | ALL | ALL      | EXCEPT  |
|     | 01. Joseph A. Boateng             02. Amy B. R. Lancellotta             03. John K. Nelson             04. Terence J. Toth                                                                                                        | ☐   | ☐        | ☐       |
|     | INSTRUCTIONS: To withhold authority to vote for any individual nominee(s), mark the box “FOR ALL EXCEPT” and write the nominee’s number on the line provided. ___________________________________________________________________ |     |          |         |

<div align='center'>Important Notice Regarding the Availability of Proxy Materials for

Nuveen Missouri Quality Municipal Income Fund,

Annual Meeting of Shareholders to be held on January 16, 2026.

The Joint Proxy Statement/Prospectus and this proxy
card are available at

https://www.nuveen.com/en-us/investments/proxy-information#closed-end-funds</div>

|                                                                                                                                                                                                                                                                                                                                                 | Authorized 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, guardian, administrator, trustee, 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 | NOM 34776 | xxxxxxxx |

| PO Box 43131              
 Providence, RI 02940-3131 | EVERY VOTE IS IMPORTANT |                                         |
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