Nuveen Municipal High Income Opportunity Fund SEC filings NMZ-RI
Nuveen Municipal High Income Opportunity Fund has 659 filings in SEC EDGAR's recent list, going back to Oct 17, 2003. The most recent current report (Form 8-K) was filed on Mar 6, 2024 (regulation fd disclosure).
| Form | Description | Filed | Period |
|---|---|---|---|
| N-23C-2 | Notice of intention to redeem securities | Nov 3, 2026 | Nov 3, 2026 |
| 497AD | Filing by certain investment companies | Oct 28, 2026 | — |
| 424B5 | Prospectus supplement | Oct 23, 2026 | — |
| 497AD | Form 497ad | Oct 22, 2026 | — |
| 424B3 | Prospectus | Oct 2, 2026 | — |
| NPORT-P | Filing | Sep 25, 2026 | Jul 31, 2026 |
| 3 | Initial insider ownership | Sep 3, 2026 | Aug 26, 2026 |
| 3 | Initial insider ownership | Sep 3, 2026 | Aug 26, 2026 |
| 3 | Initial insider ownership | Sep 1, 2026 | Aug 26, 2026 |
| N-PX | Filing | Aug 17, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Aug 6, 2026 | Aug 4, 2026 |
| 4 | Insider transaction | Aug 4, 2026 | Jul 31, 2026 |
| 4 | Insider transaction | Jul 28, 2026 | Jul 24, 2026 |
| 40-17G | Filing | Jul 16, 2026 | — |
| N-CSRS | Nuveen municipal high income opportunity fund | Jul 2, 2026 | Apr 30, 2026 |
| DEF 14A | Proxy statement | Jul 2, 2026 | Aug 13, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 22, 2026 |
| NPORT-P | Filing | Jun 24, 2026 | Apr 30, 2026 |
| POS EX | Post-effective amendment | Jun 11, 2026 | — |
| N-23C-2 | Notice of intention to redeem securities | May 1, 2026 | May 1, 2026 |
| 4 | Insider transaction | Apr 29, 2026 | Apr 27, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 29, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 29, 2026 | — |
| 424B3 | Prospectus | Apr 24, 2026 | — |
| NPORT-P | Filing | Mar 25, 2026 | Jan 31, 2026 |
| 425 | Form 425 | Mar 19, 2026 | — |
| 425 | Form 425 | Mar 19, 2026 | — |
| 425 | Filing under securities act rule 425 | Mar 9, 2026 | — |
| 425 | Filing under securities act rule 425 | Mar 9, 2026 | — |
| 425 | Filing under securities act rule 425 | Mar 9, 2026 | — |
| 425 | Filing under securities act rule 425 | Mar 9, 2026 | — |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 425 | Filing under rule 425 | Feb 27, 2026 | — |
| 425 | Filing under securities act rule 425 of certain prospectuses and communications | Feb 26, 2026 | — |
| 3 | Initial insider ownership | Feb 23, 2026 | Oct 16, 2025 |
| 425 | Filing under securities act rule 425 | Feb 4, 2026 | — |
| 425 | Filing under securities act rule 425 | Feb 4, 2026 | — |
| 425 | Filing under securities act rule 425 | Feb 4, 2026 | — |
| 425 | Filing under securities act rule 425 | Feb 2, 2026 | — |
| 425 | Filing under securities act rule 425 | Feb 2, 2026 | — |
| 425 | Filing under securities act rule 425 | Feb 2, 2026 | — |
| 425 | Filing under rule 425 | Jan 23, 2026 | — |
| 425 | Filing under rule 425 | Jan 23, 2026 | — |
| 425 | Filing under rule 425 | Jan 23, 2026 | — |
| 425 | Filing under securities act rule 425 | Jan 16, 2026 | — |
| 425 | Filing under securities act rule 425 | Jan 16, 2026 | — |
| 425 | Filing under securities act rule 425 | Jan 16, 2026 | — |
| N-CEN | Filing | Jan 14, 2026 | Oct 31, 2025 |
| N-CSR | Nuveen municipal high income opportunity fund | Jan 7, 2026 | Oct 31, 2025 |
| NPORT-P | Filing | Dec 30, 2025 | Oct 31, 2025 |
| 425 | Filing under securities act rule 425 | Dec 29, 2025 | — |
| 425 | Filing under securities act rule 425 | Dec 29, 2025 | — |
| 425 | Filing under securities act rule 425 | Dec 29, 2025 | — |
| 425 | Filing under securities act rule 425 | Dec 29, 2025 | — |
| 4 | Insider transaction | Dec 22, 2025 | Dec 19, 2025 |
| 424B3 | Prospectus | Dec 18, 2025 | — |
| EFFECT | Filing | Dec 17, 2025 | — |
| N-14 8C/A | Amendment to form n-14 8c | Dec 16, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 15, 2025 | — |
| 4 | Insider transaction | Dec 15, 2025 | Dec 11, 2025 |
| N-14 8C/A | Initial registration on form n-14 | Nov 18, 2025 | — |
| 3 | Initial insider ownership | Nov 5, 2025 | Sep 10, 2025 |
| N-23C-2 | Notice of intention to redeem securities | Oct 31, 2025 | Oct 31, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Oct 10, 2025 |
| 4 | Insider transaction | Oct 10, 2025 | Oct 9, 2025 |
| N-14 8C | Initial registration statement on form n-14 | Sep 29, 2025 | — |
| NPORT-P | Filing | Sep 26, 2025 | Jul 31, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 17, 2025 |
| N-PX | Filing | Aug 22, 2025 | Jun 30, 2025 |
| 40-17G | Filing | Jul 31, 2025 | — |
| N-CSRS | Nuveen municipal high income opportunity fund | Jul 7, 2025 | Apr 30, 2025 |
| DEF 14A | Proxy statement | Jun 30, 2025 | Aug 14, 2025 |
| NPORT-P | Filing | Jun 26, 2025 | Apr 30, 2025 |
| 424B3 | Prospectus | May 9, 2025 | — |
| N-23C-2 | Notice of intention to redeem securities | Apr 28, 2025 | Apr 28, 2025 |
| NPORT-P | Filing | Mar 26, 2025 | Jan 31, 2025 |
| 4 | Insider transaction | Mar 24, 2025 | Mar 21, 2025 |
| 4 | Insider transaction | Jan 17, 2025 | Jan 16, 2025 |
| N-CEN | Filing | Jan 14, 2025 | Oct 31, 2024 |
| N-CSR | Nuveen municipal high income opportunity fund | Jan 6, 2025 | Oct 31, 2024 |
| NPORT-P | Filing | Dec 26, 2024 | Oct 31, 2024 |
| 4 | Insider transaction | Dec 13, 2024 | Jun 5, 2014 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 13, 2024 | — |
| 4 | Insider transaction | Dec 6, 2024 | Dec 3, 2024 |
| 3 | Initial insider ownership | Dec 3, 2024 | Dec 2, 2024 |
| 424B3 | Prospectus | Oct 31, 2024 | — |
| N-23C-2 | Notification of repurchase offer | Oct 28, 2024 | Oct 28, 2024 |
| NPORT-P | Filing | Sep 25, 2024 | Jul 31, 2024 |
| 40-17G | Filing | Sep 10, 2024 | — |
| N-PX | Filing | Aug 29, 2024 | Jun 30, 2024 |
| N-CSRS | Nuveen municipal high income opportunity fund | Jul 2, 2024 | Apr 30, 2024 |
| DEF 14A | Proxy statement | Jun 27, 2024 | Aug 8, 2024 |
| NPORT-P | Filing | Jun 25, 2024 | Apr 30, 2024 |
| 424B3 | Prospectus | May 20, 2024 | — |
| N-PX/A | Nuveen municipal high income opportunity fund | May 17, 2024 | Jun 30, 2023 |
| 424B2 | Prospectus | Apr 4, 2024 | — |
| CORRESP | Letter to the SEC | Apr 1, 2024 | — |
| NPORT-P | Filing | Mar 22, 2024 | Jan 31, 2024 |
| N-23C-2 | Nuveen municipal high income opportunity fund | Mar 20, 2024 | Mar 20, 2024 |
| 3 | Initial insider ownership | Mar 11, 2024 | Feb 28, 2024 |
| N-2ASR | Nuveen municipal high income opportunity fund | Mar 8, 2024 | — |
| 3 | Initial insider ownership | Mar 8, 2024 | Feb 28, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 6, 2024 | Mar 6, 2024 |
| N-CEN | Filing | Jan 16, 2024 | Oct 31, 2023 |
| 3 | Initial insider ownership | Jan 11, 2024 | Jan 1, 2024 |
| 3 | Initial insider ownership | Jan 11, 2024 | Jan 1, 2024 |
| 3 | Initial insider ownership | Jan 11, 2024 | Jan 1, 2024 |
| 3 | Initial insider ownership | Jan 11, 2024 | Jan 1, 2024 |
| N-CSR | Nuveen municipal high income opportunity fund | Jan 5, 2024 | Oct 31, 2023 |
| 424B3 | Prospectus | Jan 2, 2024 | — |
| NPORT-P | Filing | Dec 28, 2023 | Oct 31, 2023 |
| 40-17G | Filing | Dec 1, 2023 | — |
| 4 | Insider transaction | Oct 26, 2023 | Oct 26, 2023 |
| 4 | Insider transaction | Oct 25, 2023 | Oct 25, 2023 |
| 424B3 | Prospectus | Oct 24, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Oct 13, 2023 | Oct 13, 2023 |
| 424B3 | Prospectus | Oct 13, 2023 | — |
| N-23C-2 | Nuveen municipal high income opportunity fund | Oct 6, 2023 | Oct 6, 2023 |
| NPORT-P | Filing | Sep 27, 2023 | Jul 31, 2023 |
| N-PX | Nuveen municipal high income opportunity fund | Aug 21, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Aug 10, 2023 | Aug 10, 2023 |
| 424B3 | Prospectus | Jul 14, 2023 | — |
| N-CSRS | Nuveen municipal high income opportunity fund | Jul 6, 2023 | Apr 30, 2023 |
| DEF 14A | Proxy statement | Jun 30, 2023 | Aug 9, 2023 |
| NPORT-P | Filing | Jun 28, 2023 | Apr 30, 2023 |
| 424B3 | Prospectus | May 31, 2023 | — |
| 4 | Insider transaction | Apr 26, 2023 | Apr 24, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 26, 2023 | — |
| 4 | Insider transaction | Apr 26, 2023 | Apr 24, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 26, 2023 | — |
| SC 13D | Ownership over 5% (active) | Apr 12, 2023 | — |
| 3 | Initial insider ownership | Apr 12, 2023 | Apr 3, 2023 |
| 424B3 | Prospectus | Apr 12, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 5, 2023 | — |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| NPORT-P | Filing | Mar 28, 2023 | Jan 31, 2023 |
| N-CEN | Filing | Jan 17, 2023 | Oct 31, 2022 |
| N-CSR | Nuveen municipal high income opportunity fund | Jan 9, 2023 | — |
| NPORT-P | Filing | Dec 27, 2022 | Oct 31, 2022 |
| 4 | Insider transaction | Nov 28, 2022 | Nov 28, 2022 |
| 40-17G | Filing | Nov 2, 2022 | — |
| 424B3 | Prospectus | Sep 30, 2022 | — |
| NPORT-P | Filing | Sep 28, 2022 | Jul 31, 2022 |
| N-PX | Nuveen municipal high income opportunity fund | Aug 22, 2022 | Jun 30, 2022 |
| 3 | Initial insider ownership | Aug 15, 2022 | Aug 4, 2022 |
| N-CSRS | Nmz | Jul 7, 2022 | Apr 30, 2022 |
| NPORT-P | Filing | Jun 29, 2022 | Apr 30, 2022 |
| DEF 14A | Proxy statement | Jun 28, 2022 | Aug 5, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 13, 2022 | — |
| 3 | Initial insider ownership | Jun 8, 2022 | Jun 1, 2022 |
| 4 | Insider transaction | May 26, 2022 | May 26, 2022 |
| 3 | Initial insider ownership | Apr 21, 2022 | Apr 14, 2022 |
| NPORT-P | Filing | Mar 30, 2022 | Jan 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 25, 2022 | Feb 24, 2022 |
| N-CEN | Filing | Jan 14, 2022 | Oct 31, 2021 |
| N-CSR | Nmz | Jan 6, 2022 | Oct 31, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Jan 4, 2022 | — |
| NPORT-P | Filing | Dec 28, 2021 | Oct 31, 2021 |
| POS EX | Nuveen municipal high income opportunity fund | Dec 17, 2021 | — |
| 424B5 | Prospectus supplement | Dec 17, 2021 | — |
| 424B3 | Prospectus | Nov 4, 2021 | — |
| NPORT-P | Filing | Sep 27, 2021 | Jul 31, 2021 |
| 40-17G | Filing | Sep 24, 2021 | — |
| N-PX | Nuveen municipal high income opportunity fund | Aug 16, 2021 | Jun 30, 2021 |
| 3 | Initial insider ownership | Jul 8, 2021 | Jun 2, 2021 |
| 3 | Initial insider ownership | Jul 8, 2021 | Jun 2, 2021 |
| N-CSRS | Nmz | Jul 7, 2021 | Apr 30, 2021 |
| NPORT-P | Filing | Jun 28, 2021 | Apr 30, 2021 |
| DEF 14A | Proxy statement | Jun 25, 2021 | Aug 4, 2021 |
| 424B3 | Prospectus | Jun 1, 2021 | — |
| SC 13D | Ownership over 5% (active) | Apr 28, 2021 | — |
| 3 | Initial insider ownership | Apr 28, 2021 | Apr 19, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 21, 2021 | — |
| CORRESP | Letter to the SEC | Apr 9, 2021 | — |
| NPORT-P | Filing | Mar 29, 2021 | Jan 31, 2021 |
| POS EX | Nuveen municipal high income opportunity fund | Mar 8, 2021 | — |
| 424B5 | Prospectus supplement | Mar 8, 2021 | — |
| N-2ASR | Nuveen municipal high income opportunity fund | Mar 8, 2021 | — |
| N-CEN | Filing | Jan 14, 2021 | Oct 31, 2020 |
| N-CSR | Nmz | Jan 7, 2021 | Oct 31, 2020 |
| NPORT-P | Filing | Dec 29, 2020 | Oct 31, 2020 |
| 3 | Initial insider ownership | Nov 25, 2020 | Nov 16, 2020 |
| 40-17G | Filing | Oct 13, 2020 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 6, 2020 | Oct 5, 2020 |
| NPORT-P | Filing | Sep 29, 2020 | Jul 31, 2020 |
| N-PX | Nuveen municipal high income opportunity fund | Aug 24, 2020 | Jun 30, 2020 |
| N-CSRS | Nmz | Jul 7, 2020 | Apr 30, 2020 |
| NPORT-P | Filing | Jun 29, 2020 | Apr 30, 2020 |
| DEF 14A | Proxy statement | Jun 26, 2020 | Aug 5, 2020 |
| NPORT-P | Filing | Mar 27, 2020 | Jan 31, 2020 |
| 497 | Nuveen municipal high income opportunity fund | Mar 25, 2020 | — |
| 3 | Initial insider ownership | Mar 6, 2020 | Feb 27, 2020 |
| 497 | Nuveen municipal high income opportunity fund | Mar 4, 2020 | — |
| POS EX | Nuveen municipal high income opportunity fund | Mar 2, 2020 | — |
| EFFECT | Filing | Feb 28, 2020 | — |
| CORRESP | Letter to the SEC | Feb 27, 2020 | — |
| N-2/A | Nuveen municipal high income opportunity fund | Feb 27, 2020 | — |
| CORRESP | Letter to the SEC | Feb 20, 2020 | — |
| N-2 | Nuveen municipal high income opportunity fund | Jan 17, 2020 | — |
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Company profile
- Listed as
- NMZ (NYSE)
- Incorporated in
- MA
- Headquarters
- Chicago, IL
- SEC CIK
- 1266585
Source: SEC EDGAR filings. This is company-reported data, not investment advice.