Company / CIK 0001266585
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
- Ticker
- NMZ
- Insiders on file
- 4
- Federal contracts on record
- none matched
- Lobbying filings on record
- none matched
- SEC filings
- EDGAR ↗
- Latest trade on record
- August 4, 2026
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND (NMZ) has 4 insiders on file who disclosed 24 transactions in the last 12 months (10 open-market buys, 11 sales, about $53K at reported prices). No federal contract award that started in the last 180 days was found for a recipient with exactly this name; no lobbying filing names it as client this year.
NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
3 people account for the disclosed buying and selling in NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND over the last 12 months; the most active is MOSCHNER ALBIN F with $30K.
Insiders
| Name | Role | Rows | Bought | Sold | Last filed |
|---|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | Insider | 24 | 11 | 11 | October 16, 2026 |
| WELLS FARGO & COMPANY/MN | Insider | 1 | 0 | 0 | September 25, 2026 |
| MOSCHNER ALBIN F | Insider | 2 | 0 | 2 | June 29, 2026 |
| Siffermann William A | Vice President | 1 | 1 | 0 | March 6, 2026 |
Rows are this company's Form 4 rows for each person. "Bought" and "sold" count open-market purchases (code P) and sales only. More in insider buying and insider selling.
Insider transactions
| Filer | Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | August 4, 2026 | August 6, 2026 | 2d | 1 | $10 | $10 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | August 4, 2026 | August 6, 2026 | 2d | 1 | $10 | $10 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | August 4, 2026 | August 6, 2026 | 2d | 1 | $10 | $10 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 4, 2026 | August 6, 2026 | 2d | 1 | $10 | $10 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 4, 2026 | August 6, 2026 | 2d | 1 | $10 | $10 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 4, 2026 | August 6, 2026 | 2d | 1 | $10 | $10 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | July 31, 2026 | August 4, 2026 | 4d | 5 | $10 | $52 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | August 3, 2026 | August 4, 2026 | 1d | 10 | $10 | $102 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | August 3, 2026 | August 4, 2026 | 1d | 14 | $10 | $143 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | August 3, 2026 | August 4, 2026 | 1d | 7 | $10 | $72 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 3, 2026 | August 4, 2026 | 1d | 5 | $10 | $51 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 3, 2026 | August 4, 2026 | 1d | 10 | $10 | $102 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 3, 2026 | August 4, 2026 | 1d | 14 | $10 | $143 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | August 3, 2026 | August 4, 2026 | 1d | 7 | $10 | $71 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | July 24, 2026 | July 28, 2026 | 4d | 9 | $10 | $92 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | July 24, 2026 | July 28, 2026 | 4d | 9 | $10 | $92 | indirect | Form 4 ↗ | |
| MOSCHNER ALBIN F | NMZ | Sell S | June 22, 2026 | June 29, 2026 | 7d | 1,100 | $10 | $11K | lateindirect | Form 4 ↗ | |
| MOSCHNER ALBIN F | NMZ | Sell S | June 22, 2026 | June 29, 2026 | 7d | 1,812 | $10 | $19K | late | Form 4 ↗ | |
| WELLS FARGO & COMPANY/MN | NMZ | Other J | April 27, 2026 | April 29, 2026 | 2d | 4,504 | — | — | indirect | Form 4 ↗ | |
| Siffermann William A | NMZ | Buy P | March 5, 2026 | March 6, 2026 | 1d | 100 | $10 | $1,048 | Form 4 ↗ | ||
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | December 19, 2025 | December 22, 2025 | 3d | 1,000 | $11 | $11K | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | December 19, 2025 | December 22, 2025 | 3d | 1,000 | $10 | $10K | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Other J | December 11, 2025 | December 15, 2025 | 4d | 1,000 | — | — | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Other J | December 11, 2025 | December 15, 2025 | 4d | 1,000 | — | — | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | October 10, 2025 | October 14, 2025 | 4d | 6,440 | $11 | $68K | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | October 10, 2025 | October 14, 2025 | 4d | 6,440 | $11 | $68K | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Sell S | October 9, 2025 | October 10, 2025 | 1d | 190 | $11 | $2,018 | indirect | Form 4 ↗ | |
| BANK OF AMERICA CORP /DE/ | NMZ | Buy P | October 9, 2025 | October 10, 2025 | 1d | 190 | $11 | $2,018 | indirect | Form 4 ↗ |
Federal contracts (USAspending, awards started in the last 180 days)
No contract award starting in the last 180 days was found for a recipient named exactly "NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND". Subsidiaries and differently-spelled recipients are not matched — search contracts.
Lobbying (Senate LDA, as client)
No LDA filing posted since October 2025 names "NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND" as the client. Filings under a subsidiary or trade-association name are not matched — search lobbying.
Related companies
Companies whose stock was traded by the same people who traded NMZ, by number of filers in common. It shows overlap in public filings and nothing else.
- Nuveen Quality Municipal Income Fund NAD 3 filers in common
- PUTNAM MANAGED MUNICIPAL INCOME TRUST PMM 1 filer in common
- PIMCO CALIFORNIA MUNICIPAL INCOME FUND PCQ 1 filer in common
- Neuberger Berman High Yield Strategies Fund Inc. NHS 1 filer in common
- Nuveen Minnesota Municipal Income Fund NMS 1 filer in common
- ALLIANCEBERNSTEIN NATIONAL MUNICIPAL INCOME FUND AFB 1 filer in common
- BlackRock Municipal Credit Alpha Portfolio, Inc. MUNEX 1 filer in common
- EATON VANCE SENIOR FLOATING RATE TRUST EFR 1 filer in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- What disclosure data cannot tell you Filings are late by design: up to 45 days for Congress, two business days for insiders.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 10 | 28 | October 10, 2025 | August 6, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.
Not investment advice. Public records shown as filed; no recommendation is made or implied.