NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND

Reported transaction details

Shares transacted

10.0

Security / share class

COMMON STOCK

Reported ownership

Indirect — see ownership footnotes

Reported price per share

10.2143

Transaction value (shares × reported price)

102.143

Uses reconciled original-filing precision. Value is derived and may be approximate when the filing reports rounded or averaged prices. Currency has not been independently verified. These are reported transaction amounts, not adjusted market prices used for returns.

Historical purchase-size comparison is not yet available. The pilot does not establish this insider’s usual purchase size.

Assessment

Original filing: reconciled with bulk rounding. Security: review.

Reported bulk amounts: 10.0 shares × 10.21 per share.

• Original price: 10.2143; bulk: 10.21. Difference is within the documented bulk-rounding tolerance.

Referenced filing footnotes

Without conceding its status as a greater than 10% beneficial owner or that the reported transactions are subject to disclosure under Section 16(a) of the Exchange Act or short-swing profit recovery under Section 16(b) of the Exchange Act, the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that the Reporting Persons were greater than 10% beneficial owners and the transactions were subject to Section 16(b) will be remitted to the Issuer.

This statement is jointly filed by Bank of America Corporation and Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch") (collectively, the "Reporting Persons"). Bank of America Corporation holds an indirect interest in the securities listed in this Report by virtue of its 100% ownership of its subsidiary Merrill Lynch. Each Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Securities Exchange Act of 1934 (the "Exchange Act"), or for any other purpose.

Each Reporting Person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section 13(d) of the Exchange Act or any other purpose, (i) acting (or has agreed or is agreeing to act together with any other person) as a partnership, limited partnership, syndicate or other group for the purpose of acquiring, holding or disposing of securities of the Issuer or otherwise with respect to the Issuer or any securities of the Issuer or (ii) a member of any group with respect to the Issuer or any securities of the Issuer.

Method and limitations

Daily-close v1: split-adjusted SIP daily bars supply purchase-date closes and all exit closes for both stock and SPY. Disclosure entries use each symbol's first regular-session minute open strictly after SEC acceptance + five minutes; acceptance is a publication proxy. Entry is session zero; exits occur at i+h. Daily bars are used only after the New York calendar day has ended, with a 15-minute data delay. Prices are vendor aggregates, not guaranteed fills or universally identical to official auction prices. Excludes dividends, fees and slippage. Related transaction rows are not independent signals.

Run cutoff: 2026-11-04T12:55:26.004Z. SEC acceptance: 2026-08-04T18:48:04.000Z.

Discretionary intent remains uncertain unless supported by the filing. Unresolved amendments and security identities are not silently treated as eligible trades.