Nuveen Municipal High Income Opportunity Fund SEC filings NMZ
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.