Tenax Therapeutics, Inc. SEC filings TENX
Tenax Therapeutics, Inc. has 995 filings in SEC EDGAR's recent list, going back to Aug 2, 1996. Its latest annual report, Form ARS, was filed on Apr 22, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| 8-K |
Current report
Other events
|
Oct 8, 2026 | Oct 8, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 9, 2026 | Sep 9, 2026 |
| 8-K |
Current report
Other events
|
Aug 10, 2026 | Aug 10, 2026 |
| 10-Q | Quarterly report | Jul 31, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2026 | Jul 31, 2026 |
| 8-K |
Current report
Other events
|
Jul 2, 2026 | Jul 2, 2026 |
| 8-K |
Current report
Material agreement
|
Jun 30, 2026 | Jun 29, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Jun 29, 2026 | Jun 26, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 4, 2026 | Jun 2, 2026 |
| S-8 | Employee stock plan registration | May 12, 2026 | — |
| 10-Q | Quarterly report | May 12, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 12, 2026 | May 12, 2026 |
| ARS | Annual report to shareholders | Apr 22, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 22, 2026 | — |
| DEF 14A | Proxy statement | Apr 22, 2026 | Apr 17, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Apr 22, 2026 | Apr 22, 2026 |
| EFFECT | Filing | Apr 1, 2026 | — |
| CORRESP | Letter to the SEC | Mar 31, 2026 | — |
| UPLOAD | Letter from the SEC | Mar 27, 2026 | — |
| S-3 | Shelf registration | Mar 24, 2026 | — |
| 10-K | Annual report | Mar 10, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2026 | Mar 10, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 9, 2026 | Jan 6, 2026 |
| 8-K |
Current report
Other events
|
Dec 17, 2025 | Dec 17, 2025 |
| 10-Q | Quarterly report | Nov 12, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2025 | Nov 12, 2025 |
| 8-K |
Current report
Other events
|
Sep 16, 2025 | Sep 16, 2025 |
| 8-K |
Current report
Material agreement
|
Sep 9, 2025 | Sep 3, 2025 |
| 10-Q | Quarterly report | Aug 13, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2025 | Aug 13, 2025 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Jun 17, 2025 | Jun 11, 2025 |
| 10-Q | Quarterly report | May 14, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 14, 2025 | May 14, 2025 |
| ARS | Annual report to shareholders | Apr 25, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 25, 2025 | — |
| DEF 14A | Proxy statement | Apr 25, 2025 | Apr 24, 2025 |
| EFFECT | Filing | Apr 23, 2025 | — |
| 424B3 | Prospectus | Apr 23, 2025 | — |
| CORRESP | Letter to the SEC | Apr 21, 2025 | — |
| UPLOAD | Letter from the SEC | Apr 18, 2025 | — |
| S-3 | Shelf registration | Apr 15, 2025 | — |
| PRE 14A | Preliminary proxy statement | Apr 9, 2025 | Apr 9, 2025 |
| 10-K | Annual report | Mar 25, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 25, 2025 | Mar 25, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Mar 6, 2025 | Mar 4, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 4, 2024 | Dec 2, 2024 |
| S-8 | Employee stock plan registration | Nov 26, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2024 | Nov 13, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Oct 30, 2024 | Oct 25, 2024 |
| DEF 14A | Proxy statement | Sep 27, 2024 | Oct 25, 2024 |
| EFFECT | Filing | Sep 12, 2024 | — |
| 424B3 | Prospectus | Sep 12, 2024 | — |
| CORRESP | Letter to the SEC | Sep 10, 2024 | — |
| UPLOAD | Letter from the SEC | Sep 5, 2024 | — |
| S-8 | Employee stock plan registration | Aug 30, 2024 | — |
| S-3 | Shelf registration | Aug 30, 2024 | — |
| D | Filing | Aug 23, 2024 | — |
| 10-Q | Quarterly report | Aug 13, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2024 | Aug 13, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 12, 2024 | Aug 12, 2024 |
| 8-K | Current report | Aug 6, 2024 | Aug 6, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 13, 2024 | Jun 7, 2024 |
| DEFA14A | Additional proxy material | May 24, 2024 | — |
| 10-Q | Quarterly report | May 14, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 14, 2024 | May 14, 2024 |
| ARS | Annual report to shareholders | Apr 26, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 26, 2024 | — |
| DEF 14A | Proxy statement | Apr 26, 2024 | Jun 7, 2024 |
| EFFECT | Filing | Apr 12, 2024 | — |
| EFFECT | Filing | Apr 12, 2024 | — |
| POS AM | Form pos am | Apr 11, 2024 | — |
| POS AM | Form pos am | Apr 11, 2024 | — |
| 10-K | Annual report | Mar 28, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 28, 2024 | Mar 28, 2024 |
| 424B3 | Prospectus | Feb 26, 2024 | — |
| 424B3 | Prospectus | Feb 26, 2024 | — |
| 8-K |
Current report
Other events
|
Feb 23, 2024 | Feb 22, 2024 |
| 424B3 | Prospectus | Feb 21, 2024 | — |
| 424B3 | Prospectus | Feb 21, 2024 | — |
| 8-K |
Current report
Material agreement
|
Feb 20, 2024 | Feb 19, 2024 |
| 424B3 | Prospectus | Feb 13, 2024 | — |
| 8-K |
Current report
Material agreement, Other events
|
Feb 12, 2024 | Feb 8, 2024 |
| 424B4 | Prospectus | Feb 9, 2024 | — |
| 424B3 | Prospectus | Feb 8, 2024 | — |
| 8-K |
Current report
Other events
|
Feb 8, 2024 | Feb 7, 2024 |
| EFFECT | Filing | Feb 7, 2024 | — |
| 424B3 | Prospectus | Feb 6, 2024 | — |
| 8-K |
Current report
Other events
|
Feb 6, 2024 | Feb 6, 2024 |
| CORRESP | Letter to the SEC | Feb 5, 2024 | — |
| CORRESP | Letter to the SEC | Feb 5, 2024 | — |
| S-1/A | Amended registration statement | Feb 2, 2024 | — |
| CORRESP | Letter to the SEC | Feb 1, 2024 | — |
| S-1/A | Amended registration statement | Feb 1, 2024 | — |
| 424B3 | Prospectus | Jan 22, 2024 | — |
| 8-K |
Current report
Other events
|
Jan 19, 2024 | Jan 18, 2024 |
| 424B3 | Prospectus | Jan 16, 2024 | — |
| 8-K |
Current report
Listing notice, Officer or director change
|
Jan 12, 2024 | Jan 9, 2024 |
| 424B3 | Prospectus | Jan 9, 2024 | — |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Jan 5, 2024 | Dec 29, 2023 |
| UPLOAD | Letter from the SEC | Dec 7, 2023 | — |
| 424B3 | Prospectus | Dec 1, 2023 | — |
| S-1 | Registration statement | Dec 1, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
Dec 1, 2023 | Nov 30, 2023 |
| 424B3 | Prospectus | Nov 14, 2023 | — |
| 10-Q | Quarterly report | Nov 13, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Other events
|
Nov 13, 2023 | Nov 13, 2023 |
| DEFA14A | Additional proxy material | Oct 27, 2023 | — |
| DEF 14A | Proxy statement | Oct 27, 2023 | Oct 12, 2023 |
| PRE 14A | Preliminary proxy statement | Oct 16, 2023 | Oct 12, 2023 |
| 8-K |
Current report
Listing notice
|
Sep 29, 2023 | Sep 28, 2023 |
| UPLOAD | Letter from the SEC | Aug 16, 2023 | — |
| 424B3 | Prospectus | Aug 15, 2023 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Aug 15, 2023 | Aug 9, 2023 |
| 10-Q | Quarterly report | Aug 14, 2023 | Jun 30, 2023 |
| CORRESP | Letter to the SEC | Aug 10, 2023 | — |
| UPLOAD | Letter from the SEC | Aug 7, 2023 | — |
| 424B3 | Prospectus | Jul 20, 2023 | — |
| 8-K |
Current report
Other events
|
Jul 19, 2023 | Jul 19, 2023 |
| 424B3 | Prospectus | Jun 14, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 13, 2023 | Jun 9, 2023 |
| DEFA14A | Additional proxy material | Jun 1, 2023 | — |
| 424B3 | Prospectus | Jun 1, 2023 | — |
| 8-K |
Current report
Other events
|
May 31, 2023 | May 31, 2023 |
| 10-Q | Quarterly report | May 15, 2023 | Mar 31, 2023 |
| DEFA14A | Additional proxy material | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | Jun 9, 2023 |
| PRE 14A | Preliminary proxy statement | Apr 14, 2023 | Apr 11, 2023 |
| 424B3 | Prospectus | Apr 13, 2023 | — |
| 8-K |
Current report
Other events
|
Apr 13, 2023 | Apr 12, 2023 |
| 424B3 | Prospectus | Apr 4, 2023 | — |
| 10-K | Annual report | Mar 31, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Listing notice
|
Mar 30, 2023 | Mar 29, 2023 |
| 8-K |
Current report
Other events
|
Mar 22, 2023 | Mar 22, 2023 |
| 8-K |
Current report
Agreement ended
|
Feb 10, 2023 | Feb 7, 2023 |
| 8-K |
Current report
Material agreement, Other events
|
Feb 7, 2023 | Feb 3, 2023 |
| 424B4 | Prospectus | Feb 6, 2023 | — |
| EFFECT | Filing | Feb 2, 2023 | — |
| S-1MEF | Form s-1mef | Feb 2, 2023 | — |
| CORRESP | Letter to the SEC | Feb 1, 2023 | — |
| 8-K |
Current report
Other events
|
Feb 1, 2023 | Feb 1, 2023 |
| S-1/A | Amended registration statement | Jan 31, 2023 | — |
| UPLOAD | Letter from the SEC | Jan 26, 2023 | — |
| S-1 | Registration statement | Jan 23, 2023 | — |
| 8-K |
Current report
Other events
|
Jan 20, 2023 | Jan 20, 2023 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Jan 4, 2023 | Jan 4, 2023 |
| 10-Q | Quarterly report | Nov 10, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Other events
|
Oct 11, 2022 | Oct 10, 2022 |
| 8-K |
Current report
Other events
|
Sep 20, 2022 | Sep 20, 2022 |
| 8-K |
Current report
Other events
|
Sep 15, 2022 | Sep 15, 2022 |
| 8-K |
Current report
Listing notice
|
Aug 18, 2022 | Aug 17, 2022 |
| S-8 | Employee stock plan registration | Aug 12, 2022 | — |
| 10-Q | Quarterly report | Aug 11, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jun 16, 2022 | Jun 10, 2022 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 10, 2022 | Jun 9, 2022 |
| EFFECT | Filing | Jun 3, 2022 | — |
| 424B3 | Prospectus | Jun 3, 2022 | — |
| D | Filing | Jun 1, 2022 | — |
| CORRESP | Letter to the SEC | Jun 1, 2022 | — |
| UPLOAD | Letter from the SEC | May 31, 2022 | — |
| S-3 | Shelf registration | May 25, 2022 | — |
| 8-K |
Current report
Other events
|
May 23, 2022 | May 23, 2022 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
May 20, 2022 | May 17, 2022 |
| 10-Q | Quarterly report | May 16, 2022 | Mar 31, 2022 |
| DEFA14A | Additional proxy material | Apr 28, 2022 | — |
| DEF 14A | Proxy statement | Apr 28, 2022 | Jun 9, 2022 |
| PRE 14A | Preliminary proxy statement | Apr 13, 2022 | Jun 9, 2022 |
| 10-K | Annual report | Mar 29, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Other events
|
Mar 24, 2022 | Mar 24, 2022 |
| 8-K |
Current report
Listing notice
|
Feb 18, 2022 | Feb 17, 2022 |
| 8-K |
Current report
Officer or director change, Other events
|
Jan 31, 2022 | Jan 26, 2022 |
| 8-K |
Current report
Material agreement
|
Jan 28, 2022 | Jan 25, 2022 |
| 8-K |
Current report
Other events
|
Jan 24, 2022 | Jan 24, 2022 |
| 8-K |
Current report
Other events
|
Jan 12, 2022 | Jan 12, 2022 |
| 8-K |
Current report
Other events
|
Jan 5, 2022 | Jan 4, 2022 |
| 10-Q | Quarterly report | Nov 15, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 14, 2021 | Oct 8, 2021 |
| 8-K |
Current report
Listing notice, Officer or director change
|
Sep 14, 2021 | Sep 8, 2021 |
| S-8 | Employee stock plan registration | Sep 2, 2021 | — |
| 424B3 | Prospectus | Sep 2, 2021 | — |
| EFFECT | Filing | Sep 1, 2021 | — |
| CORRESP | Letter to the SEC | Aug 31, 2021 | — |
| UPLOAD | Letter from the SEC | Aug 30, 2021 | — |
| S-3 | Shelf registration | Aug 20, 2021 | — |
| 10-Q | Quarterly report | Aug 16, 2021 | Jun 30, 2021 |
| D | Filing | Jul 20, 2021 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change, Regulation FD disclosure
|
Jul 8, 2021 | Jul 6, 2021 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Jun 11, 2021 | Jun 10, 2021 |
| 8-K |
Current report
Agreement ended
|
Jun 1, 2021 | May 28, 2021 |
| 10-Q | Quarterly report | May 17, 2021 | Mar 31, 2021 |
| DEF 14A | Proxy statement | Apr 30, 2021 | Jun 10, 2021 |
| PRE 14A | Preliminary proxy statement | Apr 20, 2021 | Jun 10, 2021 |
| 10-K/A | Amended annual report | Apr 16, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 7, 2021 | Apr 2, 2021 |
| 10-K | Annual report | Mar 31, 2021 | Dec 31, 2020 |
| 8-K/A | Amended current report | Mar 30, 2021 | Jan 15, 2021 |
| SEC STAFF LETTER | Filing | Mar 29, 2021 | — |
| 8-K |
Current report
Officer or director change
|
Mar 2, 2021 | Feb 25, 2021 |
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
- TENX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Chapel Hill, NC
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 34956
- Former names
- OXYGEN BIOTHERAPEUTICS, INC. (until Sep 15, 2014); SYNTHETIC BLOOD INTERNATIONAL INC (until Jun 30, 2008)
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- ELI LILLY & Co LLY
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.