Northwest Biotherapeutics Inc SEC filings NWBO
Northwest Biotherapeutics Inc has 803 filings in SEC EDGAR's recent list, going back to Aug 13, 2001. Its latest annual report, Form 10-K, was filed on Apr 15, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 14, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 30, 2026 (material agreement, new debt). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 8, 2024 |
| 4 | Insider transaction | Jul 30, 2024 | Jul 26, 2024 |
| 4 | Insider transaction | Dec 1, 2023 | Nov 16, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 5, 2023 | Apr 4, 2023 |
| 5 | Annual insider ownership | Feb 7, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Dec 5, 2022 | Dec 1, 2022 |
| 4 | Insider transaction | Jan 19, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Oct 16, 2020 | Oct 14, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jul 2, 2020 |
| 4 | Insider transaction | May 1, 2020 | Apr 30, 2020 |
| 4 | Insider transaction | Feb 5, 2020 | Feb 3, 2020 |
| 3 | Initial insider ownership | Dec 20, 2019 | Dec 9, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| 4 | Insider transaction | Jan 29, 2019 | Dec 27, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | May 28, 2018 |
| 4 | Insider transaction | May 31, 2018 | May 28, 2018 |
| 4 | Insider transaction | May 30, 2018 | May 28, 2018 |
| 4 | Insider transaction | May 30, 2018 | May 28, 2018 |
| 4 | Insider transaction | May 30, 2018 | May 28, 2018 |
| 4 | Insider transaction | May 30, 2018 | May 28, 2018 |
| 4/A | Ownership document | Mar 22, 2018 | Mar 19, 2018 |
| 4 | Insider transaction | Mar 21, 2018 | Mar 19, 2018 |
| 4 | Insider transaction | Mar 14, 2018 | Mar 12, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 9, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 11, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 11, 2017 | — |
| 4 | Insider transaction | Jun 29, 2017 | Jun 13, 2017 |
| 4 | Insider transaction | Jun 15, 2017 | Jun 13, 2017 |
| SC 13G | Ownership over 5% (passive) | Jun 1, 2017 | — |
| SC 13G | Ownership over 5% (passive) | Mar 24, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 24, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2017 | — |
| SC 13G | Ownership over 5% (passive) | Jan 10, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 10, 2017 | — |
| SC 13G | Ownership over 5% (passive) | Dec 30, 2016 | — |
| SC 13G | Ownership over 5% (passive) | Dec 29, 2016 | — |
| 4 | Insider transaction | Oct 4, 2016 | Sep 30, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 28, 2016 | — |
| 3 | Initial insider ownership | Mar 16, 2016 | Jan 25, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 15, 2016 | — |
| 3 | Initial insider ownership | Mar 8, 2016 | Jan 25, 2016 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 27, 2016 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 24, 2015 | — |
| 3 | Initial insider ownership | Nov 16, 2015 | Nov 5, 2015 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 2, 2015 | — |
| SC 13D | Ownership over 5% (active) | Sep 16, 2015 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Sep 9, 2015 | — |
| 4 | Insider transaction | Jul 2, 2015 | Jun 30, 2015 |
| 4 | Insider transaction | Apr 30, 2015 | Apr 16, 2012 |
| 4 | Insider transaction | Apr 30, 2015 | Apr 16, 2012 |
| 4 | Insider transaction | Apr 30, 2015 | Dec 1, 2009 |
| SC 13G | Ownership over 5% (passive) | Apr 7, 2015 | — |
| SC 13G | Ownership over 5% (passive) | Feb 26, 2015 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2015 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 5, 2015 | — |
| 4/A | Ownership document | Dec 22, 2014 | Mar 1, 2014 |
| 4/A | Ownership document | Dec 22, 2014 | Dec 1, 2013 |
| 4 | Insider transaction | Dec 19, 2014 | Jun 1, 2014 |
| 4 | Insider transaction | Dec 19, 2014 | Jan 1, 2014 |
| 4 | Insider transaction | Dec 19, 2014 | Oct 28, 2011 |
| 4 | Insider transaction | Dec 19, 2014 | Dec 22, 2008 |
| 3 | Initial insider ownership | Dec 19, 2014 | Oct 28, 2011 |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2014 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2014 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2014 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 8, 2014 | — |
| SC 13G | Ownership over 5% (passive) | Nov 29, 2013 | — |
| SC 13G | Ownership over 5% (passive) | Aug 16, 2013 | — |
| SC 13G | Ownership over 5% (passive) | Apr 18, 2013 | — |
| 4 | Insider transaction | Jan 4, 2013 | Dec 12, 2012 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 15, 2012 | — |
| 4 | Insider transaction | Jul 30, 2012 | Jul 24, 2012 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2012 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2012 | — |
| SC 13G | Ownership over 5% (passive) | Dec 22, 2011 | — |
| 4 | Insider transaction | Sep 20, 2011 | Sep 19, 2011 |
| 4 | Insider transaction | Jun 23, 2011 | Jun 21, 2011 |
| 4/A | Filing | Apr 15, 2011 | Apr 7, 2011 |
| SC 13G | Ownership over 5% (passive) | Mar 11, 2011 | — |
| 4 | Insider transaction | Mar 10, 2011 | Mar 6, 2011 |
| 4 | Insider transaction | Dec 21, 2010 | Dec 17, 2010 |
| 4 | Insider transaction | Sep 10, 2010 | Sep 1, 2010 |
| 4 | Insider transaction | Jul 8, 2010 | May 28, 2010 |
| 4 | Insider transaction | May 26, 2010 | May 24, 2010 |
| 4 | Insider transaction | Jan 6, 2010 | Jan 4, 2010 |
| 4 | Insider transaction | Dec 10, 2009 | Dec 9, 2009 |
| 4 | Insider transaction | Dec 1, 2009 | Nov 27, 2009 |
| 4 | Insider transaction | Nov 10, 2009 | Nov 7, 2009 |
| 4 | Insider transaction | Oct 16, 2009 | Oct 14, 2009 |
| 4/A | Filing | Aug 26, 2009 | Aug 21, 2009 |
| 4 | Insider transaction | Aug 25, 2009 | Aug 21, 2009 |
| 4 | Insider transaction | Aug 25, 2009 | Jan 1, 2009 |
| 4 | Insider transaction | Aug 21, 2008 | Aug 19, 2008 |
| 4 | Insider transaction | Jan 3, 2008 | Dec 31, 2007 |
| 3 | Initial insider ownership | Oct 5, 2007 | Jun 22, 2007 |
| 4 | Insider transaction | Oct 2, 2007 | Oct 1, 2007 |
| 3 | Initial insider ownership | Oct 2, 2007 | Oct 1, 2007 |
| 4 | Insider transaction | Jun 26, 2007 | Jun 22, 2007 |
| 4 | Insider transaction | Jun 5, 2007 | Jun 1, 2007 |
| 4 | Insider transaction | Apr 2, 2007 | Mar 28, 2007 |
| 3 | Initial insider ownership | Mar 7, 2007 | Mar 1, 2007 |
| 4 | Insider transaction | Jan 3, 2007 | Jan 1, 2007 |
| 4 | Insider transaction | Dec 19, 2006 | Dec 15, 2006 |
| 4/A | Main document description | Jun 5, 2006 | May 17, 2006 |
| 4 | Insider transaction | May 19, 2006 | May 17, 2006 |
| 4 | Insider transaction | Apr 20, 2006 | Apr 17, 2006 |
| 4 | Insider transaction | Apr 20, 2006 | Mar 29, 2006 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 23, 2005 | — |
| 3 | Initial insider ownership | Nov 17, 2005 | Nov 14, 2005 |
| 4 | Insider transaction | Nov 17, 2005 | Nov 14, 2005 |
| 4 | Insider transaction | Oct 5, 2005 | Sep 30, 2005 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 13, 2005 | — |
| 4 | Insider transaction | Sep 9, 2005 | Sep 7, 2005 |
| 4 | Insider transaction | Jul 28, 2005 | Jul 26, 2005 |
| 4 | Insider transaction | Jun 20, 2005 | Jun 16, 2005 |
| SC 13D/A | Amended ownership over 5% (active) | May 27, 2005 | — |
| 4 | Insider transaction | May 17, 2005 | May 13, 2005 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 21, 2005 | — |
| 4 | Insider transaction | Apr 14, 2005 | Apr 12, 2005 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 3, 2005 | — |
| 4 | Insider transaction | Jan 28, 2005 | Jan 26, 2005 |
| 4 | Insider transaction | Dec 29, 2004 | Dec 27, 2004 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 18, 2004 | — |
| 4 | Insider transaction | Nov 15, 2004 | Nov 10, 2004 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 29, 2004 | — |
| 4 | Insider transaction | Oct 26, 2004 | Oct 22, 2004 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 10, 2004 | — |
| 4 | Insider transaction | Aug 3, 2004 | Jul 30, 2004 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 25, 2004 | — |
| 4 | Insider transaction | Jun 15, 2004 | Jun 11, 2004 |
| 4 | Insider transaction | May 25, 2004 | Jun 9, 2003 |
| SC 13G/A | Amended ownership over 5% (passive) | May 25, 2004 | — |
| 3/A | Form 3/a submission | May 18, 2004 | Apr 26, 2004 |
| SC 13D/A | Amended ownership over 5% (active) | May 18, 2004 | — |
| 4 | Insider transaction | May 12, 2004 | May 10, 2004 |
| 4 | Insider transaction | May 7, 2004 | May 5, 2004 |
| 4 | Insider transaction | May 6, 2004 | Apr 30, 2004 |
| 4 | Insider transaction | May 6, 2004 | Apr 27, 2004 |
| 3 | Initial insider ownership | May 6, 2004 | Apr 26, 2004 |
| SC 13D | Ownership over 5% (active) | May 6, 2004 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2004 | — |
| SC 13G | Ownership over 5% (passive) | Feb 7, 2003 | — |
| 3 | Initial insider ownership | Dec 18, 2002 | Dec 9, 2002 |
| SC 13G | Ownership over 5% (passive) | Dec 17, 2002 | — |
| 4 | Insider transaction | Sep 23, 2002 | Aug 7, 2002 |
| 4 | Insider transaction | Sep 23, 2002 | Aug 7, 2002 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2002 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2002 | — |
| SC 13G | Ownership over 5% (passive) | Dec 26, 2001 | — |
Showing 166 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
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- NWBO (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Bethesda, MD
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1072379
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.