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 |
|---|---|---|---|
| 424B3 | Prospectus | Oct 20, 2026 | — |
| S-1 | Registration statement | Oct 9, 2026 | — |
| 424B3 | Prospectus | May 13, 2026 | — |
| S-1 | Registration statement | Apr 30, 2026 | — |
| 424B3 | Prospectus | Jan 30, 2026 | — |
| S-1 | Registration statement | Jan 21, 2026 | — |
| 424B3 | Prospectus | Jan 8, 2026 | — |
| 424B3 | Prospectus | Dec 2, 2025 | — |
| S-1 | Registration statement | Oct 24, 2025 | — |
| 424B3 | Prospectus | Jul 3, 2025 | — |
| S-1/A | Amended registration statement | Jun 27, 2025 | — |
| S-1 | Registration statement | Jun 11, 2025 | — |
| 424B3 | Prospectus | Mar 14, 2025 | — |
| S-3 | Shelf registration | Mar 6, 2025 | — |
| S-1/A | Amended registration statement | Feb 7, 2025 | — |
| S-1/A | Amended registration statement | Jan 27, 2025 | — |
| S-1 | Registration statement | Dec 23, 2024 | — |
| 424B3 | Prospectus | Jul 2, 2024 | — |
| S-1/A | Amended registration statement | Jun 27, 2024 | — |
| S-1 | Registration statement | Jun 20, 2024 | — |
| 424B5 | Prospectus supplement | May 23, 2024 | — |
| 424B5 | Prospectus supplement | Jan 4, 2023 | — |
| S-3 | Shelf registration | Oct 13, 2022 | — |
| S-8 | Employee stock plan registration | Jul 25, 2022 | — |
| S-1 | Registration statement | Apr 22, 2021 | — |
| POS AM | Filing | Apr 22, 2021 | — |
| 424B4 | Prospectus | Feb 12, 2021 | — |
| S-1MEF | Filing | Feb 10, 2021 | — |
| S-1/A | Amended registration statement | Feb 9, 2021 | — |
| S-1/A | Amended registration statement | Feb 8, 2021 | — |
| S-1/A | Amended registration statement | Feb 2, 2021 | — |
| S-1 | Registration statement | Dec 11, 2020 | — |
| 424B3 | Prospectus | Nov 19, 2020 | — |
| 424B3 | Prospectus | Nov 9, 2020 | — |
| 424B3 | Prospectus | Nov 4, 2020 | — |
| 424B3 | Prospectus | Oct 7, 2020 | — |
| 424B3 | Prospectus | Sep 22, 2020 | — |
| 424B3 | Prospectus | Aug 18, 2020 | — |
| 424B3 | Prospectus | Aug 14, 2020 | — |
| 424B3 | Prospectus | Jul 30, 2020 | — |
| S-1 | Registration statement | Jul 14, 2020 | — |
| S-1 | Registration statement | Sep 13, 2019 | — |
| S-1/A | Amended registration statement | Jul 11, 2019 | — |
| S-1 | Registration statement | Jun 21, 2019 | — |
| S-3 | Shelf registration | Feb 14, 2019 | — |
| 424B3 | Prospectus | Feb 13, 2019 | — |
| 424B3 | Prospectus | Oct 9, 2018 | — |
| 424B3 | Prospectus | Sep 21, 2018 | — |
| 424B3 | Prospectus | Aug 3, 2018 | — |
| S-3/A | Form s-3/a | Mar 21, 2018 | — |
| S-3/A | Form s-3/a | Mar 21, 2018 | — |
| S-3/A | Primary document | Mar 15, 2018 | — |
| S-3/A | Amendment to registration statement | Mar 15, 2018 | — |
| S-3 | Shelf registration | Mar 1, 2018 | — |
| S-3 | Shelf registration | Mar 1, 2018 | — |
| S-1/A | Amended registration statement | Feb 10, 2017 | — |
| S-1/A | Amended registration statement | Jan 24, 2017 | — |
| S-1/A | Amended registration statement | Dec 28, 2016 | — |
| S-1/A | Amended registration statement | Nov 21, 2016 | — |
| S-1/A | Amended registration statement | Oct 31, 2016 | — |
| S-1/A | Amended registration statement | Oct 3, 2016 | — |
| S-1/A | Amended registration statement | Aug 25, 2016 | — |
| S-1 | Registration statement | Aug 24, 2016 | — |
| S-8 | Employee stock plan registration | Jun 29, 2011 | — |
| 424B3 | Prospectus | Nov 15, 2007 | — |
| 424B3 | Prospectus | Aug 15, 2007 | — |
| 424B3 | Prospectus | Jun 1, 2007 | — |
| 424B3 | Prospectus | Jun 1, 2007 | — |
| POS AM | Post effective amendment no. 2 | May 9, 2007 | — |
| POS AM | Post effective amendment #1 | May 9, 2007 | — |
| 424B3 | Prospectus | Feb 28, 2007 | — |
| S-8 | Employee stock plan registration | Nov 17, 2006 | — |
| 424B3 | Prospectus | Nov 15, 2006 | — |
| 424B3 | Prospectus | Oct 26, 2006 | — |
| 424B3 | Prospectus | Oct 16, 2006 | — |
| 424B3 | Prospectus | Sep 21, 2006 | — |
| 424B3 | Prospectus | Aug 15, 2006 | — |
| 424B3 | Prospectus | Jul 26, 2006 | — |
| 424B3 | Prospectus | Jun 30, 2006 | — |
| 424B3 | Prospectus | Jun 1, 2006 | — |
| 424B3 | Prospectus | May 15, 2006 | — |
| 424B3 | Prospectus | Apr 13, 2006 | — |
| POS AM | Filing | Apr 5, 2006 | — |
| 424B3 | Prospectus | Mar 21, 2006 | — |
| 424B3 | Prospectus | Mar 15, 2006 | — |
| 424B3 | Prospectus | Feb 16, 2006 | — |
| 424B3 | Prospectus | Jan 10, 2006 | — |
| 424B3 | Prospectus | Jan 4, 2006 | — |
| 424B3 | Prospectus | Jan 4, 2006 | — |
| 424B3 | Prospectus | Dec 8, 2005 | — |
| 424B3 | Prospectus | Nov 23, 2005 | — |
| 424B3 | Prospectus | Nov 15, 2005 | — |
| 424B3 | Prospectus | Sep 26, 2005 | — |
| 424B3 | Prospectus | Aug 16, 2005 | — |
| 424B3 | Prospectus | May 27, 2005 | — |
| S-8 | Employee stock plan registration | Mar 11, 2004 | — |
| S-8 | Employee stock plan registration | Apr 24, 2003 | — |
| S-8 | Employee stock plan registration | Jan 30, 2001 | — |
| 424B3 | Prospectus | Jan 16, 2001 | — |
| S-3/A | Amendment #1 to form s-3 | Dec 21, 2000 | — |
| S-3 | Shelf registration | Jul 7, 2000 | — |
| S-8 | Employee stock plan registration | Mar 10, 2000 | — |
| S-3/A | Amendment no. 1 to form s-3 | Nov 12, 1998 | — |
| S-3 | Shelf registration | Aug 21, 1998 | — |
| S-3 | Shelf registration | Dec 17, 1996 | — |
| S-3/A | Amendment no. 3 to form s-3 | Aug 27, 1996 | — |
| S-3/A | Amendment #2 to form s-3 | Aug 22, 1996 | — |
| S-3/A | Amendment #1 to form s-3 | Jul 30, 1996 | — |
| S-3 | Shelf registration | Jun 13, 1996 | — |
| 424B3 | Prospectus | Jan 16, 1996 | — |
| S-8 | Employee stock plan registration | Nov 20, 1995 | — |
| S-3/A | Amendment no. 1 to form s-3 | Aug 30, 1995 | — |
| S-3 | Shelf registration | Jul 18, 1995 | — |
Showing 113 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
- 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)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.