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 |
|---|---|---|---|
| 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 |
| 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 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 22, 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 | — |
| 4 | Insider transaction | Mar 6, 2026 | Mar 5, 2026 |
| 3 | Initial insider ownership | Feb 23, 2026 | Oct 16, 2025 |
| 4 | Insider transaction | Dec 22, 2025 | Dec 19, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 15, 2025 | — |
| 4 | Insider transaction | Dec 15, 2025 | Dec 11, 2025 |
| 3 | Initial insider ownership | Nov 5, 2025 | Sep 10, 2025 |
| 4 | Insider transaction | Oct 14, 2025 | Oct 10, 2025 |
| 4 | Insider transaction | Oct 10, 2025 | Oct 9, 2025 |
| 4 | Insider transaction | Sep 19, 2025 | Sep 17, 2025 |
| 4 | Insider transaction | Mar 24, 2025 | Mar 21, 2025 |
| 4 | Insider transaction | Jan 17, 2025 | Jan 16, 2025 |
| 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 |
| 3 | Initial insider ownership | Mar 11, 2024 | Feb 28, 2024 |
| 3 | Initial insider ownership | Mar 8, 2024 | Feb 28, 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 |
| 3 | Initial insider ownership | Jan 11, 2024 | Jan 1, 2024 |
| 4 | Insider transaction | Oct 26, 2023 | Oct 26, 2023 |
| 4 | Insider transaction | Oct 25, 2023 | Oct 25, 2023 |
| 4 | Insider transaction | Aug 10, 2023 | Aug 10, 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 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 5, 2023 | — |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Nov 28, 2022 | Nov 28, 2022 |
| 3 | Initial insider ownership | Aug 15, 2022 | Aug 4, 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 |
| SC 13D/A | Amended ownership over 5% (active) | Jan 4, 2022 | — |
| 3 | Initial insider ownership | Jul 8, 2021 | Jun 2, 2021 |
| 3 | Initial insider ownership | Jul 8, 2021 | Jun 2, 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 | — |
| 3 | Initial insider ownership | Nov 25, 2020 | Nov 16, 2020 |
| 3 | Initial insider ownership | Mar 6, 2020 | Feb 27, 2020 |
| 3 | Initial insider ownership | Oct 17, 2019 | Oct 7, 2019 |
| 3 | Initial insider ownership | Aug 16, 2019 | Aug 8, 2019 |
| 3 | Initial insider ownership | Aug 16, 2019 | Aug 8, 2019 |
| 3 | Initial insider ownership | Apr 18, 2019 | Apr 12, 2019 |
| 4 | Insider transaction | Nov 16, 2018 | Nov 15, 2018 |
| 3 | Initial insider ownership | Feb 28, 2018 | Feb 28, 2018 |
| 3 | Initial insider ownership | Feb 28, 2018 | Feb 28, 2018 |
| 4 | Insider transaction | Feb 27, 2018 | Feb 26, 2018 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 27, 2018 | — |
| 3 | Initial insider ownership | Aug 11, 2017 | Aug 2, 2017 |
| 3 | Initial insider ownership | Aug 11, 2017 | Aug 2, 2017 |
| 4 | Insider transaction | Aug 10, 2017 | Aug 8, 2017 |
| 3 | Initial insider ownership | Aug 10, 2017 | Aug 2, 2017 |
| 3 | Initial insider ownership | Aug 9, 2017 | Aug 2, 2017 |
| 3 | Initial insider ownership | Jul 10, 2017 | Jul 1, 2017 |
| 4 | Insider transaction | May 18, 2017 | May 18, 2017 |
| 3 | Initial insider ownership | May 18, 2017 | Jul 12, 2013 |
| 144 | Notice of proposed sale | May 15, 2017 | — |
| 4 | Insider transaction | Dec 9, 2016 | Dec 7, 2016 |
| 3 | Initial insider ownership | Oct 11, 2016 | Oct 1, 2016 |
| 3 | Initial insider ownership | Jul 8, 2016 | Jul 1, 2016 |
| 3 | Initial insider ownership | Jun 24, 2016 | Jun 15, 2016 |
| 3 | Initial insider ownership | Feb 24, 2016 | Feb 15, 2016 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2016 | — |
| 4 | Insider transaction | Dec 17, 2015 | Dec 15, 2015 |
| 3 | Initial insider ownership | Aug 14, 2015 | Aug 6, 2015 |
| 4 | Insider transaction | Jul 2, 2015 | Jul 1, 2015 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 2, 2015 | — |
| 4 | Insider transaction | Mar 23, 2015 | Mar 19, 2015 |
| 3 | Initial insider ownership | Mar 5, 2015 | Feb 24, 2015 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 9, 2015 | — |
| 4 | Insider transaction | Oct 6, 2014 | Oct 2, 2014 |
| 4 | Insider transaction | Sep 3, 2014 | Aug 29, 2014 |
| 4 | Insider transaction | Mar 11, 2014 | Mar 10, 2014 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2014 | — |
| 4 | Insider transaction | Jan 8, 2014 | Jan 6, 2014 |
| 4 | Insider transaction | Dec 18, 2013 | Dec 17, 2013 |
| 4 | Insider transaction | Oct 28, 2013 | Oct 24, 2013 |
| 4 | Insider transaction | Oct 23, 2013 | Oct 21, 2013 |
| 4 | Insider transaction | Sep 18, 2013 | Aug 26, 2013 |
| 3 | Initial insider ownership | Sep 10, 2013 | Sep 1, 2013 |
| 3 | Initial insider ownership | Sep 10, 2013 | Sep 1, 2013 |
| 3 | Initial insider ownership | Jul 26, 2013 | Jul 17, 2013 |
| 4 | Insider transaction | Jul 17, 2013 | Jul 15, 2013 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 17, 2013 | — |
| 4 | Insider transaction | Jul 5, 2013 | Jul 3, 2013 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 4, 2013 | — |
| SC 13D | Ownership over 5% (active) | Dec 28, 2012 | — |
| 3 | Initial insider ownership | Dec 28, 2012 | Dec 21, 2012 |
| SC 13G | Ownership over 5% (passive) | Nov 9, 2012 | — |
| 3 | Initial insider ownership | Aug 25, 2011 | Aug 17, 2011 |
| 4 | Insider transaction | Jul 11, 2011 | May 5, 2011 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 11, 2011 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 27, 2011 | — |
| 4 | Insider transaction | Jun 21, 2011 | Jun 17, 2011 |
| 4 | Insider transaction | Jun 21, 2011 | Jun 17, 2011 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2011 | — |
| 3 | Initial insider ownership | Jan 12, 2011 | Jan 3, 2011 |
| 3 | Initial insider ownership | Jan 12, 2011 | Jan 3, 2011 |
| 3 | Initial insider ownership | Jan 11, 2011 | Jan 3, 2011 |
| 3 | Initial insider ownership | Jan 11, 2011 | Jan 3, 2011 |
| 3 | Initial insider ownership | Jan 11, 2011 | Jan 3, 2011 |
| SC 13G | Ownership over 5% (passive) | Jan 7, 2011 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 6, 2010 | — |
| 3 | Initial insider ownership | Aug 5, 2010 | Jul 27, 2010 |
| SC 13D | Ownership over 5% (active) | Aug 5, 2010 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 10, 2010 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 12, 2010 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2010 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 20, 2010 | — |
| 3 | Initial insider ownership | Nov 27, 2009 | Nov 18, 2009 |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 10, 2009 | — |
| 3 | Initial insider ownership | Jun 9, 2009 | May 29, 2009 |
| 3 | Initial insider ownership | Apr 1, 2009 | Mar 27, 2009 |
| 3 | Initial insider ownership | Apr 1, 2009 | Mar 27, 2009 |
| 3 | Initial insider ownership | Apr 1, 2009 | Mar 27, 2009 |
| 3 | Initial insider ownership | Apr 1, 2009 | Mar 27, 2009 |
| 3 | Initial insider ownership | Apr 1, 2009 | Mar 27, 2009 |
| 3 | Initial insider ownership | Apr 1, 2009 | Mar 27, 2009 |
| SC 13G | Ownership over 5% (passive) | Feb 17, 2009 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2009 | — |
| 4 | Insider transaction | Dec 19, 2008 | Dec 17, 2008 |
| SC 13G | Ownership over 5% (passive) | Dec 10, 2008 | — |
| 3 | Initial insider ownership | Dec 10, 2008 | Nov 30, 2008 |
| 3 | Initial insider ownership | Jul 2, 2008 | Jul 1, 2008 |
| 3 | Initial insider ownership | Jun 9, 2008 | May 30, 2008 |
| 4 | Insider transaction | Jan 30, 2008 | Jan 29, 2008 |
| 3 | Initial insider ownership | Jan 25, 2008 | Jan 15, 2008 |
| 4 | Insider transaction | Dec 28, 2007 | Dec 27, 2007 |
| 4 | Insider transaction | Dec 26, 2007 | Dec 24, 2007 |
| 4 | Insider transaction | Nov 27, 2007 | Nov 26, 2007 |
| 4 | Insider transaction | Oct 11, 2007 | Oct 9, 2007 |
| 3 | Initial insider ownership | Aug 8, 2007 | Aug 2, 2007 |
| 3 | Initial insider ownership | Jun 7, 2007 | Jun 1, 2007 |
| 3 | Initial insider ownership | Jun 7, 2007 | Jun 1, 2007 |
| 3 | Initial insider ownership | Mar 7, 2007 | Feb 26, 2007 |
| 3 | Initial insider ownership | Jan 9, 2007 | Jan 1, 2007 |
| 3 | Initial insider ownership | Sep 28, 2006 | Sep 18, 2006 |
| 4 | Insider transaction | Feb 24, 2006 | Feb 23, 2006 |
| 4 | Insider transaction | May 26, 2005 | May 25, 2005 |
| 3 | Initial insider ownership | Mar 1, 2005 | Feb 23, 2005 |
| 3 | Initial insider ownership | Mar 1, 2005 | Feb 23, 2005 |
| 3 | Initial insider ownership | Jan 6, 2005 | Jan 1, 2005 |
| 3 | Initial insider ownership | Nov 22, 2004 | Nov 16, 2004 |
| 3/A | Filing | Oct 18, 2004 | Nov 19, 2003 |
| 3 | Initial insider ownership | Aug 24, 2004 | Aug 16, 2004 |
| 3 | Initial insider ownership | Mar 17, 2004 | Nov 21, 2003 |
| 3 | Initial insider ownership | Mar 5, 2004 | Feb 23, 2004 |
| 3 | Initial insider ownership | Feb 19, 2004 | Feb 15, 2004 |
| 4 | Insider transaction | Dec 2, 2003 | Dec 1, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
| 3 | Initial insider ownership | Nov 19, 2003 | Nov 19, 2003 |
Showing 199 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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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.