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 |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 4, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 27, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 8, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 5, 2026 | — |
| 4 | Insider transaction | May 28, 2026 | May 27, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 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 |
| 4 | Insider transaction | Oct 9, 2025 | Oct 8, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 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 | — |
| 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 |
| 4 | Insider transaction | Mar 17, 2025 | Mar 17, 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 | — |
| 4 | Insider transaction | Dec 12, 2024 | Dec 10, 2024 |
| 3 | Initial insider ownership | Dec 12, 2024 | Dec 10, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 15, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 7, 2024 | — |
| 4 | Insider transaction | Jul 24, 2024 | Jul 22, 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 |
| 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 |
| 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 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 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 |
| 4 | Insider transaction | May 11, 2023 | May 10, 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 |
| 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 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 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 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 1, 2023 | — |
| 4 | Insider transaction | Nov 21, 2022 | Nov 21, 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 |
| 4 | Insider transaction | Apr 28, 2022 | Apr 26, 2022 |
| 4 | Insider transaction | Apr 28, 2022 | Apr 26, 2022 |
| 4 | Insider transaction | Apr 28, 2022 | Apr 26, 2022 |
| 4 | Insider transaction | Apr 28, 2022 | Apr 26, 2022 |
| 4 | Insider transaction | Apr 28, 2022 | Apr 26, 2022 |
| 4 | Insider transaction | Apr 28, 2022 | Apr 26, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2022 | — |
| 4 | Insider transaction | Feb 7, 2022 | Feb 3, 2022 |
| 4 | Insider transaction | Feb 7, 2022 | Feb 3, 2022 |
| 4 | Insider transaction | Feb 7, 2022 | Feb 3, 2022 |
| 4 | Insider transaction | Jan 18, 2022 | Jan 13, 2022 |
| 4 | Insider transaction | Jan 10, 2022 | Jan 7, 2022 |
| 4 | Insider transaction | Nov 15, 2021 | Nov 15, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 8, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Sep 27, 2021 | — |
| 4 | Insider transaction | Sep 22, 2021 | Sep 20, 2021 |
| SC 13G | Ownership over 5% (passive) | Sep 17, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Sep 17, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 12, 2021 | — |
| 4 | Insider transaction | May 25, 2021 | May 21, 2021 |
| 4 | Insider transaction | May 25, 2021 | May 21, 2021 |
| 4 | Insider transaction | May 25, 2021 | May 21, 2021 |
| 4 | Insider transaction | May 25, 2021 | May 21, 2021 |
| 4 | Insider transaction | May 25, 2021 | May 21, 2021 |
| 3 | Initial insider ownership | May 25, 2021 | May 21, 2021 |
| 4 | Insider transaction | May 20, 2021 | May 18, 2021 |
| 4 | Insider transaction | May 20, 2021 | May 18, 2021 |
| 4 | Insider transaction | Apr 29, 2021 | Apr 28, 2021 |
| 4 | Insider transaction | Apr 29, 2021 | Apr 28, 2021 |
| 4 | Insider transaction | Apr 29, 2021 | Apr 28, 2021 |
| 4 | Insider transaction | Apr 29, 2021 | Apr 28, 2021 |
| 4 | Insider transaction | Apr 29, 2021 | Apr 28, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 9, 2021 | — |
| 4/A | Form 4/a submission | Mar 9, 2021 | Feb 4, 2021 |
| 4/A | Form 4/a submission | Mar 9, 2021 | May 26, 2020 |
| SC 13G | Ownership over 5% (passive) | Feb 17, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| 4 | Insider transaction | Feb 9, 2021 | Feb 6, 2021 |
| 4 | Insider transaction | Feb 9, 2021 | Feb 6, 2021 |
| 4 | Insider transaction | Feb 8, 2021 | Feb 4, 2021 |
| 4 | Insider transaction | Feb 8, 2021 | Feb 4, 2021 |
| 4 | Insider transaction | Feb 8, 2021 | Feb 4, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2021 | — |
| 4 | Insider transaction | Sep 3, 2020 | Aug 28, 2020 |
| 4 | Insider transaction | Aug 28, 2020 | Aug 26, 2020 |
| 4 | Insider transaction | Jun 23, 2020 | Jun 19, 2020 |
| 4 | Insider transaction | Jun 23, 2020 | Jun 19, 2020 |
| 4 | Insider transaction | May 28, 2020 | May 16, 2020 |
| 4 | Insider transaction | May 28, 2020 | May 26, 2020 |
| 4 | Insider transaction | May 28, 2020 | May 26, 2020 |
| 4 | Insider transaction | May 22, 2020 | May 20, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 6, 2020 |
| SC 13G | Ownership over 5% (passive) | Feb 18, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 14, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 12, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2020 | — |
| 4 | Insider transaction | Feb 11, 2020 | Feb 10, 2020 |
| 4 | Insider transaction | Feb 7, 2020 | Feb 5, 2020 |
| 4 | Insider transaction | Feb 7, 2020 | Feb 5, 2019 |
| 4 | Insider transaction | Feb 7, 2020 | Feb 5, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 14, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jul 17, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2019 | — |
| 4 | Insider transaction | Jul 2, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 2, 2019 | Jun 28, 2019 |
| 3 | Initial insider ownership | Jul 2, 2019 | Jun 28, 2019 |
| 3 | Initial insider ownership | Jul 2, 2019 | Jun 28, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 10, 2019 | — |
| 4 | Insider transaction | May 20, 2019 | May 16, 2019 |
| 4 | Insider transaction | May 10, 2019 | May 8, 2019 |
| 4 | Insider transaction | May 10, 2019 | May 8, 2019 |
| 4 | Insider transaction | May 10, 2019 | May 8, 2019 |
| 4 | Insider transaction | May 10, 2019 | May 8, 2019 |
| 4 | Insider transaction | May 10, 2019 | May 8, 2019 |
| 4 | Insider transaction | May 10, 2019 | May 8, 2019 |
| SC 13G | Ownership over 5% (passive) | Apr 22, 2019 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 16, 2019 | — |
| 4 | Insider transaction | Apr 16, 2019 | Apr 12, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2019 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 12, 2019 | — |
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.