aTYR PHARMA INC
ATYR- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001339970
No open-market purchases or sales by aTYR PHARMA INC insiders were filed in the last 90 days; 89 institutions reported holding it in 13F filings for Q2 2026, worth $23.2M in total; no superinvestor holds it.
Holders of 5% or more of ATYR
Holders whose latest Schedule 13D or 13G filing reports 5% or more of aTYR PHARMA INC, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of aTYR PHARMA INC on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
46 Schedule 13D and 13G filings on aTYR PHARMA INC, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Nov 4, 20267:48 AM ET | Federated Hermes, Inc.and 4 others | 13G/A | 0.00%0 shares | −5.06 ppfrom 5.06%Below 5% | Oct 31, 2026 | SEC |
| Oct 7, 20267:18 AM ET | Federated Hermes, Inc.and 4 others | 13G/A | 5.06%4.97M shares | −3.62 ppfrom 8.68% | Sep 30, 2026 | SEC |
| Aug 6, 202610:14 AM ET | FMR LLCand 1 other | 13G/A | 2.50%2.47M shares | −3.60 ppfrom 6.10%Below 5% | Jun 30, 2026 | SEC |
| Jul 27, 20264:25 PM ET | BlackRock, Inc. | 13G/A | 1.80%1.73M shares | −4.70 ppfrom 6.50%Below 5% | Jun 30, 2026 | SEC |
| Jul 8, 20267:37 AM ET | Federated Hermes, Inc.and 4 others | 13G/A | 8.68%8.51M shares | −2.08 ppfrom 10.76% | Jun 30, 2026 | SEC |
| Jun 5, 202610:13 AM ET | FMR LLCand 1 other | 13G/A | 6.10%5.94M shares | – | May 29, 2026 | SEC |
| Mar 26, 20264:08 PM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −5.23 ppfrom 5.23%Below 5% | Mar 13, 2026 | SEC |
| Oct 7, 202511:03 AM ET | Federated Hermes, Inc.and 4 others | 13G/A | 10.76%10.5M shares | −6.71 ppfrom 17.47% | Sep 30, 2025 | SEC |
| Jul 29, 202511:24 AM ET | Vanguard Group Inc | 13G | 5.23%4.66M shares | New | Jun 30, 2025 | SEC |
| Jul 17, 20258:12 PM ET | BlackRock, Inc. | 13G | 6.50%5.76M shares | New | Jun 30, 2025 | SEC |
| May 15, 20253:55 PM ET | Point72 Asset Management, L.P.and 2 others | 13G/A | 3.20%2.85M shares | –Below 5% | Mar 31, 2025 | SEC |
| Jan 8, 20251:38 PM ET | Federated Hermes, Inc.and 4 others | 13G/A | 17.47%14.7M shares | – | Dec 31, 2024 | SEC |
| Nov 14, 2024 | Logos Global Management LP | 13G/AOld format | – | – | – | SEC |
| Oct 15, 2024 | Point72 Asset Management, L.P. | 13GOld format | – | New | – | SEC |
| Oct 7, 2024 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2024 | Lytton Laurence W | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2024 | Stonepine Capital Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 18, 2024 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 2, 2024 | Logos Global Management LP | 13GOld format | – | New | – | SEC |
| Feb 22, 2023 | Lytton Laurence W | 13GOld format | – | New | – | SEC |
| Feb 17, 2023 | Stonepine Capital Management, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Venrock Healthcare Capital Partners II, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 2023 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Tang Capital Partners LP | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Ikarian Capital, LLC | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Alyeska Investment Group, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2022 | Venrock Healthcare Capital Partners II, L.P. | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Oct 8, 2021 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Sep 27, 2021 | Venrock Healthcare Capital Partners II, L.P. | 13GOld format | – | New | – | SEC |
| Sep 17, 2021 | Tang Capital Partners LP | 13GOld format | – | New | – | SEC |
| Sep 17, 2021 | Ikarian Capital, LLC | 13GOld format | – | New | – | SEC |
| Jul 12, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Apr 12, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Apr 9, 2021 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 17, 2021 | Aspire Capital Fund, LLC | 13GOld format | – | New | – | SEC |
| Feb 16, 2021 | Viking Global Investors LPSuperinvestorViking Global Investors | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Alyeska Investment Group, L.P. | 13GOld format | – | New | – | SEC |
| Feb 12, 2021 | Federated Hermes, Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2021 | Altium Capital Management LP | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2021 | Renaissance Technologies LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 22, 2021 | Domain Partners VIII, L.P. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell aTYR PHARMA INC shares.
No Form 144 notices for aTYR PHARMA INC are on file.