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 |
|---|---|---|---|
| DEF 14A | Proxy statement | Oct 13, 2026 | Oct 13, 2026 |
| PRE 14A | Preliminary proxy statement | Oct 2, 2026 | Oct 2, 2026 |
| DEF 14A | Proxy statement | Jul 2, 2026 | Jul 2, 2026 |
| PRE 14A | Preliminary proxy statement | Jun 18, 2026 | Jun 18, 2026 |
| DEFA14A | Additional proxy material | Jun 11, 2025 | — |
| DEF 14A | Proxy statement | Jun 11, 2025 | Jun 11, 2025 |
| PRE 14A | Preliminary proxy statement | May 30, 2025 | May 30, 2025 |
| DEFA14A | Additional proxy material | Jun 17, 2024 | — |
| DEFA14A | Additional proxy material | Apr 29, 2024 | — |
| DEF 14A | Proxy statement | Apr 29, 2024 | Apr 29, 2024 |
| DEFA14A | Additional proxy material | Nov 6, 2023 | — |
| DEFA14A | Additional proxy material | Nov 6, 2023 | — |
| DEF 14A | Proxy statement | Nov 6, 2023 | Nov 6, 2023 |
| PRE 14A | Preliminary proxy statement | Oct 27, 2023 | Oct 27, 2023 |
| DEFA14A | Additional proxy material | May 5, 2023 | — |
| DEF 14A | Proxy statement | May 1, 2023 | May 1, 2023 |
| DEFA14A | Additional proxy material | Oct 4, 2022 | — |
| DEF 14A | Proxy statement | Aug 17, 2022 | Aug 17, 2022 |
| DEF 14A | Proxy statement | Apr 29, 2022 | Apr 29, 2022 |
| PRE 14A | Preliminary proxy statement | Apr 19, 2022 | Apr 19, 2022 |
| DEF 14C | Information statement | Jan 14, 2021 | Dec 30, 2020 |
| PRE 14C | Filing | Dec 30, 2020 | Dec 30, 2020 |
| DEF 14C | Information statement | May 12, 2017 | May 12, 2017 |
| PRE 14C | Oxis pre 14c to effect reverse split and increase authorized shares | Mar 24, 2017 | Mar 24, 2017 |
| DEF 14C | Information statement | May 19, 2015 | May 19, 2015 |
| PRE 14C | Oxis pre 14c | May 8, 2015 | May 8, 2015 |
| DEF 14A | Proxy statement | Jul 14, 2011 | Jul 13, 2011 |
| PRE 14A | Preliminary proxy statement | Jul 1, 2011 | Aug 25, 2011 |
| DEF 14C | Information statement | Jan 20, 2011 | Jan 20, 2011 |
| PRE 14C | Oxis information statement 01-20-2011 | Jan 7, 2011 | Jan 20, 2011 |
| DEF 14A | Proxy statement | Sep 19, 2007 | Sep 19, 2007 |
| DEF 14A | Proxy statement | Jun 15, 2006 | Aug 1, 2006 |
| PRE 14A | Preliminary proxy statement | Jun 5, 2006 | Aug 1, 2006 |
| DEFA14A | Additional proxy material | May 24, 2005 | — |
| DEF 14A | Proxy statement | Apr 29, 2005 | Jun 22, 2005 |
| DEF 14A | Proxy statement | Apr 29, 2004 | Jun 22, 2004 |
| DEF 14A | Proxy statement | Apr 30, 2003 | Jun 19, 2003 |
| DEF 14A | Proxy statement | Apr 29, 2002 | Jun 14, 2002 |
| DEF 14A | Proxy statement | Nov 9, 2000 | Dec 12, 2000 |
| DEF 14A | Proxy statement | Jul 16, 1999 | Sep 1, 1999 |
| DEF 14A | Proxy statement | Jun 9, 1998 | Jul 13, 1998 |
| PRE 14A | Preliminary proxy statement | Mar 30, 1998 | May 29, 1998 |
| DEF 14A | Proxy statement | Apr 4, 1997 | May 9, 1997 |
| PRE 14A | Preliminary proxy statement | Mar 19, 1997 | May 9, 1997 |
| DEF 14A | Proxy statement | May 6, 1996 | Jun 13, 1996 |
| PRE 14A | Preliminary proxy statement | Apr 12, 1996 | Jun 13, 1996 |
| DEF 14A | Proxy statement | Jul 21, 1995 | Aug 15, 1995 |
Showing 47 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
- 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
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- Astrazeneca PLC AZN
- Abbott Laboratories ABT
- Novo Nordisk A S NVO
Source: SEC EDGAR filings. This is company-reported data, not investment advice.