Nuveen Municipal High Income Opportunity Fund SEC filings NMZ-RW
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.