

Market & Alt Data
Buy Activity
Sell Activity
| Trade Date | Filed | Owner | Role | Type | Shares | Price | Value | Owned After | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-09-04 | 2026-09-04 | Cherry Brian N | Director | Purchase | 104.2K | $9.60 | $1000K | 166.5K | View | |
| 2026-08-17 | 2026-08-26 | Nguyen AnhCo | Director & President and CEO | Sale | 5,062 | $8.08 | $41K | 132.8K | View | |
| 2026-05-18 | 2026-05-20 | Grant-Huerta Yanina | Chief Accounting Officer | Sale | 2,414 | $9.13 | $22K | 49.6K | View | |
| 2026-05-18 | 2026-05-20 | Nguyen AnhCo | Director & President and CEO | Sale | 5,241 | $9.13 | $48K | 137.8K | View | |
| 2026-05-07 | 2026-05-11 | EcoR1 Capital, LLC | 10% Owner | Purchase | 507.4K | $9.35 | $4.74M | 1.55M | View |
Informational purposes only, not investment advice.
tormere.com/research/ATRA · generated 2026-11-04
| Date | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 2026-09-04 | Cherry Brian N | P | 104,166 | $999,993.6 |
| 2026-08-17 | Nguyen AnhCo | S | 5,062 | $40,882.74 |
| 2026-05-18 | Grant-Huerta Yanina | S | 2,414 | $22,036.44 |
| 2026-05-18 | Nguyen AnhCo | S | 5,241 | $47,844.56 |
| 2026-05-07 | EcoR1 Capital, LLC | P | 507,407 | $5M |
Tormere — informational purposes only, not investment advice.