Insider · CIK 0001290922
Brian N Cherry
Files at: ATRA. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 4, 2026 PForm 4 → | Sep 4, 6:20 pm EDT | Atara Biotherapeutics, Inc.ATRA | 104,166 | $9.60 | $999,994 | 166,486 | +167% | |
| Jun 11, 2026 AForm 4 → | Jun 15, 6:51 pm EDT | Atara Biotherapeutics, Inc.ATRA | 24,000 | — | — | 62,320 | — |
Reported trades — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.