aTyr Pharma, Inc.
Ownership
Ownership Structure
Who owns aTyr Pharma, Inc. (ATYR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.6% of the shares are freely tradable; institutional investors hold 48.6%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.99 | 14,706,843 | +0.1 | 03/31/2026 |
| Federated Hermes Inc | 8.68 | 8,509,678 | -19.0 | 06/30/2026 |
| BlackRock Inc | 6.57 | 6,443,904 | -1.6 | 03/31/2026 |
| UBS Group AG | 3.94 | 3,867,213 | +137.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.89 | 3,812,132 | +0.0 | 03/31/2026 |
| GSA Capital Partners LLP | 3.52 | 3,454,863 | +105.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Federated Hermes Kaufmann Growth | 4.45 | 4,367,290 | -21.8 | 06/30/2026 |
| Federated Hermes Kaufmann R | 4.45 | 4,367,290 | -21.8 | 06/30/2026 |
| Federated Hermes Kaufmann Small Cap A | 4.14 | 4,061,288 | -15.5 | 06/30/2026 |
| Federated Hermes Kaufmann Small Cap Grow | 4.14 | 4,061,288 | -15.5 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.