aTyr Pharma, Inc. (ATYR) has 10 known insider and institutional holders on record. The largest holder is EcoR1 Capital Fund Qualified, L.P. with 3,198,420 shares. Other notable holders include SCHIMMEL PAUL and Shukla Sanjay.
Over the last 12 months, insiders have made 17 transactions in ATYR stock — 11 buys (valued at $3.57M) and 3 sells (valued at $6.27K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
ATYR Insider Ownership
Top Holder
EcoR1 Capital Fund Qualified, L.P.
3,198,420 shares
Buys (12 mo)
11
$3.57M value
Sells (12 mo)
3
$6.27K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Ecor1 Capital Fund Qualified, L.p. |
10 Percent Owner |
3,198,420 |
2017-12-14 |
|
| 2 |
Schimmel Paul |
Director |
1,095,024 |
2025-10-09 |
|
| 3 |
Shukla Sanjay |
President and CEO |
153,553 |
2026-02-04 |
|
| 4 |
Gross Jane A |
Director |
50,000 |
2025-05-02 |
|
| 5 |
Coughlin Timothy |
Director |
50,000 |
2025-05-02 |
|
| 6 |
Zaknoen Sara |
Director |
50,000 |
2025-05-02 |
|
| 7 |
Lucas Svetlana |
Director |
50,000 |
2025-05-02 |
|
| 8 |
Benevich Eric |
Director |
50,000 |
2025-05-02 |
|
| 9 |
Broadfoot Jill Marie |
Chief Financial Officer |
37,296 |
2026-02-04 |
|
| 10 |
Denyes Nancy |
General Counsel |
33,124 |
2026-02-04 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-02-04 |
Shukla Sanjay |
President and CEO |
Informative Sell |
3,745 |
$0.98 |
$3.66K |
| 2026-02-03 |
Shukla Sanjay |
President and CEO |
Option Exercise (Sell) |
10,375 |
- |
- |
| 2026-02-04 |
Denyes Nancy |
General Counsel |
Informative Sell |
1,118 |
$0.98 |
$1.09K |
| 2026-02-03 |
Denyes Nancy |
General Counsel |
Option Exercise (Sell) |
2,687 |
- |
- |
| 2026-02-04 |
Broadfoot Jill Marie |
Chief Financial Officer |
Informative Sell |
1,558 |
$0.98 |
$1.52K |
| 2026-02-03 |
Broadfoot Jill Marie |
Chief Financial Officer |
Option Exercise (Sell) |
3,750 |
- |
- |
| 2026-01-09 |
Shukla Sanjay |
President and CEO |
RSU Award |
1,500,000 |
$0.71 |
$1.07M |
| 2026-01-09 |
Denyes Nancy |
General Counsel |
RSU Award |
412,500 |
$0.71 |
$293.99K |
| 2026-01-09 |
Broadfoot Jill Marie |
Chief Financial Officer |
RSU Award |
412,500 |
$0.71 |
$293.99K |
| 2025-10-09 |
Schimmel Paul |
Director |
Informative Buy |
317,999 |
$0.94 |
$299.36K |
| 2025-10-08 |
Schimmel Paul |
Director |
Informative Buy |
682,001 |
$0.90 |
$612.44K |
| 2025-05-01 |
Lucas Svetlana |
Director |
RSU Award |
50,000 |
$3.34 |
$167K |
| 2025-05-01 |
Gross Jane A |
Director |
RSU Award |
50,000 |
$3.34 |
$167K |
| 2025-05-01 |
Benevich Eric |
Director |
RSU Award |
50,000 |
$3.34 |
$167K |
| 2025-05-01 |
Zaknoen Sara |
Director |
RSU Award |
50,000 |
$3.34 |
$167K |
| 2025-05-01 |
Coughlin Timothy |
Director |
RSU Award |
50,000 |
$3.34 |
$167K |
| 2025-05-01 |
Schimmel Paul |
Director |
RSU Award |
50,000 |
$3.34 |
$167K |
