aTYR PHARMA INC SEC filings ATYR
aTYR PHARMA INC has 755 filings in SEC EDGAR's recent list, going back to Sep 23, 2005. Its latest annual report, Form ARS, was filed on Mar 26, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 6, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 6, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Nov 6, 2026 | Nov 6, 2026 |
| 424B5 | Prospectus supplement | Nov 6, 2026 | — |
| 10-Q | Quarterly report | Nov 6, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2026 | Nov 5, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 4, 2026 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Oct 27, 2026 | Oct 27, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Oct 16, 2026 | Oct 16, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 7, 2026 | — |
| 4 | Insider transaction | Oct 1, 2026 | Oct 1, 2026 |
| 3 | Initial insider ownership | Oct 1, 2026 | Oct 1, 2026 |
| 8-K |
Current report
Other events
|
Sep 24, 2026 | Sep 24, 2026 |
| DEF 14A | Proxy statement | Sep 11, 2026 | Oct 16, 2026 |
| PRE 14A | Preliminary proxy statement | Aug 31, 2026 | Oct 16, 2026 |
| S-8 | Employee stock plan registration | Aug 7, 2026 | — |
| 10-Q | Quarterly report | Aug 7, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2026 | Aug 7, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| 8-K |
Current report
Agreement ended
|
Jul 31, 2026 | Jul 30, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 27, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 8, 2026 | — |
| 8-K |
Current report
Listing notice
|
Jun 8, 2026 | Jun 3, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 5, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 1, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 27, 2026 |
| 10-Q | Quarterly report | May 15, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 15, 2026 | May 15, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure, Other events
|
May 11, 2026 | May 11, 2026 |
| ARS | Annual report to shareholders | Mar 26, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Mar 26, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| DEF 14A | Proxy statement | Mar 26, 2026 | Mar 26, 2026 |
| PRE 14A | Preliminary proxy statement | Mar 12, 2026 | Mar 12, 2026 |
| 10-K | Annual report | Mar 5, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2026 | Mar 5, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 9, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 9, 2026 |
| 4 | Insider transaction | Jan 9, 2026 | Jan 9, 2026 |
| 8-K |
Current report
Listing notice
|
Dec 5, 2025 | Dec 4, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 6, 2025 | Nov 6, 2025 |
| 4 | Insider transaction | Oct 9, 2025 | Oct 8, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 7, 2025 | — |
| 8-K |
Current report
Other events
|
Sep 15, 2025 | Sep 15, 2025 |
| EFFECT | Filing | Aug 18, 2025 | — |
| CORRESP | Letter to the SEC | Aug 13, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 13, 2025 | — |
| 8-K/A |
Amended current report
Results of operations
|
Aug 8, 2025 | Aug 7, 2025 |
| S-8 | Employee stock plan registration | Aug 7, 2025 | — |
| S-3 | Shelf registration | Aug 7, 2025 | — |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Impairment
|
Aug 7, 2025 | Aug 7, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 17, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 7, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 7, 2025 | May 7, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 6, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| 4 | Insider transaction | May 2, 2025 | May 1, 2025 |
| ARS | Annual report to shareholders | Mar 19, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Mar 19, 2025 | — |
| DEF 14A | Proxy statement | Mar 19, 2025 | Mar 19, 2025 |
| 4 | Insider transaction | Mar 17, 2025 | Mar 17, 2025 |
| 10-K | Annual report | Mar 13, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 13, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Feb 4, 2025 | Feb 3, 2025 |
| 4 | Insider transaction | Jan 10, 2025 | Jan 8, 2025 |
| 4 | Insider transaction | Jan 10, 2025 | Jan 8, 2025 |
| 4 | Insider transaction | Jan 10, 2025 | Jan 8, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 8, 2025 | — |
| 424B5 | Prospectus supplement | Dec 23, 2024 | — |
| 8-K |
Current report
Material agreement
|
Dec 23, 2024 | Dec 23, 2024 |
| 4 | Insider transaction | Dec 12, 2024 | Dec 10, 2024 |
| 3 | Initial insider ownership | Dec 12, 2024 | Dec 10, 2024 |
| 8-K |
Current report
Officer or director change
|
Dec 12, 2024 | Dec 10, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2024 | Nov 7, 2024 |
| SC 13G | Ownership over 5% (passive) | Oct 15, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 7, 2024 | — |
| S-8 | Employee stock plan registration | Aug 13, 2024 | — |
| 10-Q | Quarterly report | Aug 13, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 13, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Jul 24, 2024 | Jul 22, 2024 |
| 8-K |
Current report
Other events
|
Jul 22, 2024 | Jul 22, 2024 |
| UPLOAD | Letter from the SEC | Jun 25, 2024 | — |
| CORRESP | Letter to the SEC | Jun 18, 2024 | — |
| UPLOAD | Letter from the SEC | Jun 6, 2024 | — |
| 4 | Insider transaction | Jun 6, 2024 | Jun 5, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 30, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 31, 2024 |
| 4 | Insider transaction | Jun 3, 2024 | May 31, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
May 29, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 22, 2024 |
| 4 | Insider transaction | May 23, 2024 | May 22, 2024 |
| 10-Q | Quarterly report | May 2, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 5, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 5, 2024 | — |
| DEF 14A | Proxy statement | Apr 5, 2024 | May 22, 2024 |
| 10-K | Annual report | Mar 14, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 14, 2024 | Mar 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2024 | — |
| 4 | Insider transaction | Feb 6, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 6, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 6, 2024 | Feb 5, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 18, 2024 | — |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 5, 2024 |
| SC 13G | Ownership over 5% (passive) | Jan 2, 2024 | — |
| 4 | Insider transaction | Dec 12, 2023 | Dec 11, 2023 |
| EFFECT | Filing | Nov 20, 2023 | — |
| CORRESP | Letter to the SEC | Nov 16, 2023 | — |
| UPLOAD | Letter from the SEC | Nov 15, 2023 | — |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
| S-3 | Shelf registration | Nov 9, 2023 | — |
| 424B5 | Prospectus supplement | Nov 9, 2023 | — |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 26, 2023 | Sep 26, 2023 |
| 8-K |
Current report
Other events
|
Sep 11, 2023 | Sep 10, 2023 |
| S-8 | Employee stock plan registration | Aug 10, 2023 | — |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2023 | Aug 9, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 28, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 19, 2023 | May 17, 2023 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 19, 2023 | May 17, 2023 |
| 4 | Insider transaction | May 11, 2023 | May 10, 2023 |
| 10-Q | Quarterly report | May 9, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 9, 2023 | May 9, 2023 |
| 4 | Insider transaction | Apr 28, 2023 | Apr 26, 2023 |
| 4 | Insider transaction | Apr 28, 2023 | Apr 26, 2023 |
| 4 | Insider transaction | Apr 28, 2023 | Apr 26, 2023 |
| 4 | Insider transaction | Apr 28, 2023 | Apr 26, 2023 |
| 4 | Insider transaction | Apr 28, 2023 | Apr 26, 2023 |
| 4 | Insider transaction | Apr 28, 2023 | Apr 26, 2023 |
| ARS | Annual report to shareholders | Apr 18, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Mar 29, 2023 | — |
| DEFA14A | Additional proxy material | Mar 29, 2023 | — |
| DEF 14A | Proxy statement | Mar 29, 2023 | May 17, 2023 |
| 10-K | Annual report | Mar 14, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 10, 2023 | Mar 10, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2023 | Mar 9, 2023 |
| PRE 14A | Preliminary proxy statement | Mar 8, 2023 | May 17, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 22, 2023 | — |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 17, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| 8-K |
Current report
Other events
|
Feb 9, 2023 | Feb 8, 2023 |
| 424B5 | Prospectus supplement | Feb 9, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 424B5 | Prospectus supplement | Feb 8, 2023 | — |
| 4 | Insider transaction | Feb 6, 2023 | Feb 3, 2023 |
| 4 | Insider transaction | Feb 6, 2023 | Feb 3, 2023 |
| 4 | Insider transaction | Feb 6, 2023 | Feb 3, 2023 |
| 8-K |
Current report
Other events
|
Feb 6, 2023 | Feb 6, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2023 | — |
| 4 | Insider transaction | Nov 21, 2022 | Nov 21, 2022 |
| 10-Q | Quarterly report | Nov 14, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2022 | Nov 10, 2022 |
| 10-Q | Quarterly report | Aug 15, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 15, 2022 | Aug 15, 2022 |
| 8-K |
Current report
Other events
|
Aug 11, 2022 | Aug 9, 2022 |
| 4 | Insider transaction | Jul 6, 2022 | Jul 1, 2022 |
| 4 | Insider transaction | May 26, 2022 | May 24, 2022 |
| 4 | Insider transaction | May 26, 2022 | May 24, 2022 |
| 4 | Insider transaction | May 26, 2022 | May 24, 2022 |
| 8-K |
Current report
Other events
|
May 17, 2022 | May 16, 2022 |
| 8-K |
Current report
Material agreement
|
May 16, 2022 | May 12, 2022 |
| S-8 | Employee stock plan registration | May 11, 2022 | — |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
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
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- ATYR (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- San Diego, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1339970
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.