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NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) SEC Filings

NMZ NYSE

Welcome to our dedicated page for NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND SEC filings (Ticker: NMZ), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.

Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.

Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time SEC filing updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND's regulatory disclosures and financial reporting.

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NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) reported an initial statement of ownership on Form 3 for Margot Kleinman, who is identified as a Portfolio Manager. The filing does not list any specific holdings or transactions, so it simply establishes her status as an insider associated with the fund.

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NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) reported an initial statement of beneficial ownership for Kristen Dejong, identified as a Portfolio Manager. The filing lists no reportable holdings or transactions in NMZ securities at this time, and no derivative positions are disclosed.

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NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) has a new initial insider ownership report. Reporting person Parth Doshi, identified with the role "VP", filed a Form 3 stating their status with respect to NMZ. The filing reports no transactions and does not list any specific holdings or derivative positions.

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Nuveen Municipal High Income Opportunity Fund common stock saw offsetting indirect trades on August 4, 2026 by reporting persons Bank of America Corporation and its wholly owned subsidiary Merrill Lynch, Pierce, Fenner & Smith Incorporated.

Merrill Lynch executed three 1-share purchases at per-share prices between $10.1750 and $10.1887 and three 1-share sales between $10.2301 and $10.3237. The reporting persons disclaim beneficial ownership except to any pecuniary interest and do not concede greater-than-10% beneficial owner or group status; any profit potentially recoverable under Section 16(b) will be remitted to the fund.

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Bank of America Corporation and its subsidiary Merrill Lynch, as joint reporting persons, disclosed small, offsetting trades in NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND common stock. On 2026-08-03 and 2026-07-31 they indirectly purchased 36 shares and sold 36 shares at per-share prices between $10.1950 and $10.3250. They describe their interest as indirect, disclaim beneficial ownership beyond any pecuniary interest, and state that any potentially recoverable short-swing profit from these trades will be remitted to the fund.

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Bank of America Corporation and its subsidiary Merrill Lynch, Pierce, Fenner & Smith Incorporated jointly report indirect trades in NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND common stock on 2026-07-24, purchasing 9 shares at $10.235 and selling 9 shares at $10.175. The positions are held indirectly through Merrill Lynch, with both reporting persons disclaiming beneficial ownership except for any pecuniary interest and not conceding greater-than-10% beneficial-owner status or group status. They state that any profit potentially recoverable as short-swing profit under Section 16(b), if they were deemed greater-than-10% owners, will be remitted to the issuer.

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Nuveen’s municipal closed-end funds, including Nuveen Municipal High Income Opportunity Fund, are calling 2026 virtual annual shareholder meetings to elect independent board members. The meetings will be held online on August 13, 2026 at 2:00 p.m. Central time for all listed funds.

Shareholders of record on June 22, 2026 can vote by mail, phone, internet, or during the webcast. Common shareholders will elect four board members per fund, while certain preferred shareholders separately elect two members. All nominees are independent, and the funds use a staggered board with Classes I, II and III.

The statement explains quorum rules, broker voting under NYSE Rule 452, and how “broker non-votes” and abstentions are treated. It also details the unitary board structure across 210 Nuveen portfolios, committee responsibilities, and increased board retainers and committee fees effective in 2025–2026.

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Nuveen Municipal High Income Opportunity Fund trustee Albin F. Moschner reported open-market sales of its Common Stock. On June 22, 2026, he sold 1,100 shares at $10.354 per share through a family LLC, leaving 736 indirectly held shares, and sold 1,812 shares at $10.37 per share directly, leaving 3,788 directly held shares.

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NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND reported an insider restructuring involving its preferred shares. In connection with the reorganization of two Nuveen municipal funds into this fund, Wells Fargo Municipal Capital Strategies, LLC exchanged 4,504 Variable Rate Demand Preferred Shares of the target funds for an equal number of the fund’s Variable Rate Demand Preferred Shares in a cashless transaction.

The filing shows these 4,504 preferred shares as indirectly beneficially owned by Capital Strategies, which is a wholly owned subsidiary of Wells Fargo & Company, giving Wells Fargo an indirect interest in the same number of preferred shares.

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FAQ

How many NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) SEC filings are available on StockTitan?

StockTitan tracks 24 SEC filings for NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ), including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, and Form 4 insider trading disclosures. Each filing includes AI-generated summaries, impact scoring, and sentiment analysis.

When was the most recent SEC filing for NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ)?

The most recent SEC filing for NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) was filed on September 3, 2026.