As of April 17, 2026, aTYR PHARMA's top three insider holders are Paul Schimmel (Director, 1.41Mn shares), Sanjay Shukla (President And Ceo, 153.55K shares), Sanjay Shukla (President And Ceo, 116.55K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Paul Schimmel | - | 0 | 1,413,023 | 09 Oct, 2025 |
| Sanjay Shukla | President And Ceo | 153,553 | 0 | 04 Feb, 2026 |
| Sanjay Shukla | President And Ceo | 116,548 | 0 | 06 Feb, 2024 |
| Timothy Coughlin | - | 0 | 56,000 | 03 Jun, 2024 |
| Jill Marie Broadfoot | Chief Financial Officer | 37,296 | 0 | 04 Feb, 2026 |
| Nancy Denyes | General Counsel | 33,124 | 0 | 04 Feb, 2026 |
| Jill Marie Broadfoot | Chief Financial Officer | 20,821 | 0 | 06 Feb, 2024 |
| John K Clarke | - | 19,797 | 0 | 28 Apr, 2023 |
| Nancy Denyes | General Counsel | 14,767 | 0 | 06 Feb, 2024 |
| Jane A Gross | - | 9,750 | 0 | 17 Mar, 2025 |
| Paul Schimmel | - | 8,890 | 0 | 28 Apr, 2023 |
| Timothy Coughlin | - | 6,000 | 0 | 28 Apr, 2023 |
| Sara Zaknoen | - | 6,000 | 0 | 28 Apr, 2023 |
| Jane A Gross | - | 6,000 | 0 | 28 Apr, 2023 |
| Svetlana Lucas | - | 6,000 | 0 | 28 Apr, 2023 |
| Paul Schimmel | - | 2,890 | 0 | 22 Sep, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 03 Feb, 2026 | Sanjay Shukla | Common Stock | A | 10,375 | - | 157,298 | D | M |
| 03 Feb, 2026 | Nancy Denyes | Common Stock | A | 2,687 | - | 34,242 | D | M |
| 03 Feb, 2026 | Jill Marie Broadfoot | Common Stock | A | 3,750 | - | 38,854 | D | M |
| 04 Feb, 2026 | Nancy Denyes | Common Stock | D | 1,118 | $0.98 | 33,124 | D | S |
| 04 Feb, 2026 | Jill Marie Broadfoot | Common Stock | D | 1,558 | $0.98 | 37,296 | D | S |
| 04 Feb, 2026 | Sanjay Shukla | Common Stock | D | 3,745 | $0.98 | 153,553 | D | S |
| 03 Feb, 2026 | Sanjay Shukla | Restricted Stock Unit | D | 10,375 | $0.00 | 0 | D | M |
| 03 Feb, 2026 | Nancy Denyes | Restricted Stock Unit | D | 2,687 | $0.00 | 0 | D | M |
| 03 Feb, 2026 | Jill Marie Broadfoot | Restricted Stock Unit | D | 3,750 | $0.00 | 0 | D | M |
| 09 Jan, 2026 | Sanjay Shukla | Employee Stock Option (right to buy) | A | 1,500,000 | $0.00 | 1,500,000 | D | A |
| 09 Jan, 2026 | Jill Marie Broadfoot | Employee Stock Option (right to buy) | A | 412,500 | $0.00 | 412,500 | D | A |
| 09 Jan, 2026 | Nancy Denyes | Employee Stock Options (right to buy) | A | 412,500 | $0.00 | 412,500 | D | A |
| 08 Oct, 2025 | Paul Schimmel | Common Stock | A | 682,001 | $0.90 | 1,095,024 | I | P |
| 09 Oct, 2025 | Paul Schimmel | Common Stock | A | 317,999 | $0.94 | 1,413,023 | I | P |
| 01 May, 2025 | Timothy Coughlin | Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 01 May, 2025 | Eric Benevich | Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 01 May, 2025 | Jane A Gross | Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 01 May, 2025 | Sara Zaknoen | Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 01 May, 2025 | Paul Schimmel | Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |
| 01 May, 2025 | Svetlana Lucas | Stock Option (right to buy) | A | 50,000 | $0.00 | 50,000 | D | A |