GT Biopharma, Inc. SEC filings GTBP
GT Biopharma, Inc. has 883 filings in SEC EDGAR's recent list, going back to May 12, 1995. Its latest annual report, Form 10-K, was filed on Mar 2, 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 Sep 25, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Sep 25, 2026 | Sep 22, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Bylaw or fiscal year change
|
Sep 21, 2026 | Sep 18, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Bylaw or fiscal year change
|
Sep 15, 2026 | Sep 14, 2026 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Sep 3, 2026 | Sep 2, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Aug 14, 2026 | Aug 14, 2026 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Jun 12, 2026 | Jun 8, 2026 |
| 8-K |
Current report
Listing notice
|
May 22, 2026 | May 20, 2026 |
| 8-K |
Current report
Material agreement
|
Apr 7, 2026 | Apr 3, 2026 |
| 8-K |
Current report
Restatement
|
Mar 2, 2026 | Mar 1, 2026 |
| 8-K |
Current report
Listing notice
|
Nov 26, 2025 | Nov 20, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 14, 2025 | Nov 14, 2025 |
| 8-K |
Current report
Change to shareholder rights
|
Sep 26, 2025 | Sep 25, 2025 |
| 8-K |
Current report
Change to shareholder rights
|
Sep 23, 2025 | Sep 17, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 29, 2025 | Aug 26, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jul 24, 2025 | Jul 24, 2025 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jun 11, 2025 | Jun 10, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Bylaw or fiscal year change
|
May 27, 2025 | May 21, 2025 |
| 8-K |
Current report
Officer or director change
|
May 13, 2025 | May 7, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Bylaw or fiscal year change
|
May 13, 2025 | May 12, 2025 |
| 8-K |
Current report
Officer or director change
|
May 5, 2025 | Apr 29, 2025 |
| 8-K |
Current report
Unregistered share sale
|
Apr 4, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Feb 26, 2025 | Feb 25, 2025 |
| 8-K |
Current report
Other events
|
Jan 27, 2025 | Jan 27, 2025 |
| 8-K |
Current report
Listing notice
|
Nov 27, 2024 | Nov 21, 2024 |
| 8-K |
Current report
Material agreement
|
Nov 21, 2024 | Nov 18, 2024 |
| 8-K |
Current report
Officer or director change
|
Sep 16, 2024 | Sep 16, 2024 |
| 8-K |
Current report
Other events
|
Jun 27, 2024 | Jun 27, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 26, 2024 | Jun 25, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 7, 2024 | Jun 3, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
May 23, 2024 | May 21, 2024 |
| 8-K |
Current report
Material agreement
|
Apr 30, 2024 | Apr 25, 2024 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Regulation FD disclosure
|
Feb 1, 2024 | Feb 1, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Dec 21, 2023 | Dec 18, 2023 |
| 8-K |
Current report
Other events
|
Dec 4, 2023 | Dec 4, 2023 |
| 8-K |
Current report
Listing notice
|
Aug 22, 2023 | Aug 22, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jul 5, 2023 | Jun 28, 2023 |
| 8-K |
Current report
Officer or director change
|
May 4, 2023 | May 1, 2023 |
| 8-K |
Current report
Listing notice
|
Feb 28, 2023 | Feb 22, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Jan 4, 2023 | Dec 30, 2022 |
| 8-K |
Current report
Officer or director change
|
Dec 13, 2022 | Dec 8, 2022 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Nov 9, 2022 | Nov 3, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Oct 12, 2022 | Oct 10, 2022 |
| 8-K |
Current report
Other events
|
Oct 4, 2022 | Oct 4, 2022 |
| 8-K |
Current report
Material agreement
|
Aug 30, 2022 | Aug 24, 2022 |
| 8-K/A |
Amended current report
Shareholder vote results
|
Aug 17, 2022 | Jun 8, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Jun 14, 2022 | Jun 8, 2022 |
| 8-K |
Current report
Officer or director change
|
Jun 10, 2022 | Jun 9, 2022 |
| 8-K |
Current report
Officer or director change
|
Mar 8, 2022 | Mar 2, 2022 |
| 8-K |
Current report
Officer or director change
|
Feb 18, 2022 | Feb 14, 2022 |
| 8-K |
Current report
Other events
|
Dec 23, 2021 | Dec 22, 2021 |
| 8-K |
Current report
Officer or director change
|
Dec 21, 2021 | Dec 15, 2021 |
| 8-K |
Current report
Listing notice
|
Nov 26, 2021 | Nov 23, 2021 |
| 8-K |
Current report
Other events
|
Nov 1, 2021 | Nov 1, 2021 |
| 8-K |
Current report
Other events
|
Sep 23, 2021 | Sep 17, 2021 |
| 8-K |
Current report
Other events
|
Sep 13, 2021 | Sep 13, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
May 19, 2021 | May 19, 2021 |
| 8-K |
Current report
Officer or director change, Other events
|
Apr 29, 2021 | Apr 23, 2021 |
| 8-K |
Current report
Restatement
|
Apr 16, 2021 | Apr 14, 2021 |
| 8-K |
Current report
Unregistered share sale, Bylaw or fiscal year change
|
Feb 22, 2021 | Feb 16, 2021 |
| 8-K |
Current report
Unregistered share sale
|
Feb 18, 2021 | Feb 17, 2021 |
| 8-K |
Current report
Unregistered share sale
|
Feb 17, 2021 | Feb 16, 2021 |
| 8-K |
Current report
Material agreement
|
Feb 11, 2021 | Feb 10, 2021 |
| 8-K |
Current report
Material agreement, New debt
|
Feb 9, 2021 | Dec 14, 2020 |
| 8-K |
Current report
Material agreement
|
Feb 2, 2021 | Jan 31, 2021 |
| 8-K |
Current report
Officer or director change
|
Jan 19, 2021 | Jan 13, 2021 |
| 8-K |
Current report
Auditor change
|
Dec 31, 2020 | Dec 28, 2020 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Dec 28, 2020 | Dec 22, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 23, 2020 | Dec 22, 2020 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Nov 9, 2020 | Nov 6, 2020 |
| 8-K |
Current report
Material agreement
|
Nov 4, 2020 | Nov 4, 2020 |
| 8-K |
Current report
Material agreement
|
Oct 6, 2020 | Oct 5, 2020 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Sep 22, 2020 | Sep 16, 2020 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jul 9, 2020 | Jul 7, 2020 |
| 8-K |
Current report
Material agreement
|
Jun 23, 2020 | Jun 23, 2020 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Jun 19, 2020 | Jun 19, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
May 29, 2020 | May 29, 2020 |
| 8-K |
Current report
Material agreement
|
Sep 24, 2019 | Sep 19, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Aug 23, 2019 | Aug 20, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
May 24, 2019 | May 22, 2019 |
| 8-K |
Current report
Unregistered share sale
|
Apr 19, 2019 | Apr 19, 2019 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Apr 5, 2019 | Apr 4, 2019 |
| 8-K |
Current report
Officer or director change
|
Mar 22, 2019 | Mar 20, 2019 |
| 8-K |
Current report
Officer or director change
|
Mar 21, 2019 | Mar 15, 2019 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Feb 6, 2019 | Feb 4, 2019 |
| 8-K |
Current report
Officer or director change
|
Jan 7, 2019 | Jan 7, 2019 |
| 8-K |
Current report
Other events
|
Jan 7, 2019 | Jan 7, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 15, 2018 | Nov 15, 2018 |
| 8-K |
Current report
Other events
|
Nov 1, 2018 | Nov 1, 2018 |
| 8-K |
Current report
Change in control
|
Oct 16, 2018 | Oct 11, 2018 |
| 8-K |
Current report
Officer or director change
|
Oct 12, 2018 | Oct 9, 2018 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Sep 28, 2018 | Sep 24, 2018 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Sep 7, 2018 | Sep 7, 2018 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Aug 3, 2018 | Aug 2, 2018 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jul 5, 2018 | Jul 2, 2018 |
| 8-K |
Current report
Officer or director change
|
May 14, 2018 | May 9, 2018 |
| 8-K |
Current report
Officer or director change
|
Apr 27, 2018 | Apr 23, 2018 |
| 8-K/A |
Amended current report
Bylaw or fiscal year change
|
Mar 15, 2018 | Jul 19, 2017 |
| 8-K |
Current report
Material agreement, Restatement, Officer or director change
|
Feb 21, 2018 | Feb 14, 2018 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jan 23, 2018 | Jan 22, 2018 |
| 8-K |
Current report
Officer or director change
|
Jan 16, 2018 | Jan 16, 2018 |
| 8-K |
Current report
Officer or director change
|
Nov 16, 2017 | Nov 16, 2017 |
| 8-K |
Current report
Material agreement
|
Oct 12, 2017 | Oct 10, 2017 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Officer or director change
|
Sep 5, 2017 | Sep 1, 2017 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Jul 25, 2017 | Jul 17, 2017 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 26, 2017 | Jun 26, 2017 |
| 8-K |
Current report
Other events
|
Apr 3, 2017 | Apr 3, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Mar 23, 2017 | Mar 20, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Mar 2, 2017 | Feb 24, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Feb 17, 2017 | Feb 14, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Feb 9, 2017 | Feb 3, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Feb 3, 2017 | Jan 31, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Jan 27, 2017 | Jan 24, 2017 |
| 8-K |
Current report
Unregistered share sale
|
Jan 20, 2017 | Jan 17, 2017 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jan 13, 2017 | Jan 12, 2017 |
| 8-K |
Current report
Other events
|
Aug 9, 2016 | Aug 9, 2016 |
| 8-K |
Current report
Unregistered share sale
|
Jun 17, 2016 | Jun 13, 2016 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jun 3, 2016 | May 27, 2016 |
| 8-K |
Current report
Material agreement, Other events
|
Feb 19, 2016 | Feb 19, 2016 |
| 8-K |
Current report
Unregistered share sale
|
Jan 22, 2016 | Jan 19, 2016 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jan 8, 2016 | Jan 8, 2016 |
| 8-K |
Current report
Other events
|
Oct 26, 2015 | Oct 26, 2015 |
| 8-K |
Current report
Material agreement
|
Sep 8, 2015 | Sep 3, 2015 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Mar 13, 2015 | Mar 10, 2015 |
| 8-K |
Current report
Other events
|
Jan 12, 2015 | Jan 12, 2015 |
| 8-K |
Current report
Officer or director change
|
Nov 20, 2014 | Nov 20, 2014 |
| 8-K |
Current report
Unregistered share sale, Officer or director change, Other events
|
Nov 10, 2014 | Nov 4, 2014 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change
|
Jul 30, 2014 | Jul 24, 2014 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Dec 12, 2012 | Dec 7, 2012 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 6, 2012 | Nov 6, 2012 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 24, 2012 | Oct 24, 2012 |
| 8-K |
Current report
Officer or director change
|
Nov 1, 2011 | Nov 1, 2011 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Aug 31, 2011 | Aug 25, 2011 |
| 8-K |
Current report
Material agreement, Other events
|
Jul 12, 2011 | Jun 29, 2011 |
| 8-K |
Current report
Officer or director change
|
Jul 7, 2011 | Jun 30, 2011 |
| 8-K |
Current report
Officer or director change
|
Jul 1, 2011 | Jun 27, 2011 |
| 8-K |
Current report
Officer or director change
|
Jul 20, 2010 | Jul 14, 2010 |
| 8-K |
Current report
Officer or director change
|
Jun 17, 2010 | Jun 14, 2010 |
| 8-K |
Current report
Officer or director change
|
Mar 15, 2010 | Mar 8, 2010 |
| 8-K |
Current report
Officer or director change
|
Mar 5, 2010 | Mar 1, 2010 |
| 8-K |
Current report
Unregistered share sale
|
Feb 16, 2010 | Feb 10, 2010 |
| 8-K |
Current report
Officer or director change
|
Jan 20, 2010 | Jan 15, 2010 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Oct 9, 2009 | Oct 1, 2009 |
| 8-K |
Current report
Officer or director change
|
Jul 23, 2009 | Jul 13, 2009 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Apr 13, 2009 | Apr 7, 2009 |
| 8-K |
Current report
Officer or director change
|
Apr 1, 2009 | Mar 26, 2009 |
| 8-K |
Current report
Acquisition or sale of assets
|
Dec 18, 2008 | Dec 11, 2008 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Dec 10, 2008 | Dec 4, 2008 |
| 8-K |
Current report
Auditor change
|
Dec 9, 2008 | Aug 18, 2008 |
| 8-K |
Current report
Officer or director change
|
Sep 10, 2008 | Sep 4, 2008 |
| 8-K |
Current report
Officer or director change
|
Aug 18, 2008 | Jul 30, 2008 |
| 8-K |
Current report
Officer or director change
|
Jul 16, 2008 | Jul 11, 2008 |
| 8-K |
Current report
Officer or director change
|
Jun 30, 2008 | Jun 27, 2008 |
| 8-K |
Current report
Acquisition or sale of assets, Officer or director change
|
Jun 24, 2008 | Jun 19, 2008 |
| 8-K |
Current report
Other events
|
Jun 17, 2008 | Jun 16, 2008 |
| 8-K |
Current report
Other events
|
Jun 13, 2008 | Jun 6, 2008 |
| 8-K |
Current report
Officer or director change
|
Dec 27, 2007 | Dec 20, 2007 |
| 8-K |
Current report
Other events
|
Oct 25, 2007 | Oct 22, 2007 |
| 8-K |
Current report
Material agreement
|
Oct 16, 2007 | Oct 11, 2007 |
| 8-K |
Current report
Officer or director change, Other events
|
Sep 27, 2007 | Sep 13, 2007 |
| 8-K/A |
Amended current report
Material agreement, Officer or director change
|
May 3, 2007 | Mar 8, 2007 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Apr 16, 2007 | Mar 8, 2007 |
| 8-K |
Current report
Material agreement
|
Apr 6, 2007 | Apr 2, 2007 |
| 8-K |
Current report
Material agreement, Officer or director change, Bylaw or fiscal year change
|
Jan 18, 2007 | Jan 11, 2007 |
| 8-K |
Current report
Officer or director change
|
Nov 15, 2006 | Nov 15, 2006 |
| 8-K |
Current report
Material agreement
|
Nov 13, 2006 | Nov 6, 2006 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Unregistered share sale, Other events
|
Oct 26, 2006 | Oct 25, 2006 |
| 8-K |
Current report
Agreement ended
|
Oct 16, 2006 | Oct 12, 2006 |
| 8-K |
Current report
Officer or director change
|
Sep 21, 2006 | Sep 15, 2006 |
| 8-K |
Current report
Material agreement, New debt
|
Jul 26, 2006 | Jul 20, 2006 |
| 8-K |
Current report
Material agreement
|
Jun 29, 2006 | Jun 23, 2006 |
| 8-K |
Current report
Material agreement
|
May 31, 2006 | May 12, 2006 |
| 8-K |
Current report
Results of operations
|
May 10, 2006 | May 9, 2006 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 4, 2006 | Mar 31, 2006 |
| 8-K |
Current report
Officer or director change
|
Mar 21, 2006 | Mar 15, 2006 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 14, 2006 | Mar 10, 2006 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Feb 15, 2006 | Feb 2, 2006 |
| 8-K |
Current report
Material agreement
|
Feb 13, 2006 | Feb 10, 2006 |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Feb 10, 2006 | Dec 6, 2005 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jan 10, 2006 | Jan 6, 2006 |
| 8-K |
Current report
Material agreement
|
Jan 4, 2006 | Dec 28, 2005 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Exit or restructuring costs
|
Dec 8, 2005 | Dec 2, 2005 |
| 8-K |
Current report
Material agreement
|
Nov 23, 2005 | Nov 17, 2005 |
| 8-K |
Current report
Material agreement
|
Nov 2, 2005 | Oct 28, 2005 |
| 8-K |
Current report
Officer or director change
|
Oct 7, 2005 | Oct 5, 2005 |
| 8-K |
Current report
Material agreement
|
Sep 23, 2005 | Sep 19, 2005 |
| 8-K |
Current report
Material agreement
|
Aug 4, 2005 | Aug 4, 2005 |
| 8-K |
Current report
Material agreement, Agreement ended, Unregistered share sale
|
May 25, 2005 | May 23, 2005 |
| 8-K |
Current report
Results of operations
|
May 3, 2005 | May 2, 2005 |
| 8-K |
Current report
Material agreement, New debt, Officer or director change
|
Mar 4, 2005 | Feb 28, 2005 |
| 8-K/A |
Amended current report
Material agreement, Unregistered share sale
|
Feb 10, 2005 | Feb 10, 2005 |
| 8-K |
Current report
Officer or director change
|
Jan 10, 2005 | Jan 6, 2005 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jan 4, 2005 | Dec 30, 2004 |
| 8-K |
Current report
Officer or director change
|
Dec 14, 2004 | Dec 14, 2004 |
| 8-K |
Current report
Material agreement
|
Oct 19, 2004 | Oct 18, 2004 |
| 8-K |
Current report
Officer or director change
|
Aug 24, 2004 | Aug 20, 2004 |
| 8-K | Current report | Aug 10, 2004 | Aug 6, 2004 |
| 8-K | Current report | Jun 10, 2004 | Jun 1, 2004 |
| 8-K | Current report | May 28, 2004 | May 27, 2004 |
| 8-K | Current report | Mar 31, 2004 | Mar 30, 2004 |
| 8-K | Current report | Mar 15, 2004 | Feb 27, 2004 |
Showing 200 filings, the most recent 200. 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
- GTBP (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- San Francisco, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 109657
- Former names
- GT Biopharma, Inc. (until Oct 20, 2026); OXIS INTERNATIONAL INC (until Jul 25, 2017)
Other Pharmaceutical Preparations companies
- ELI LILLY & Co LLY
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.