Atara Biotherapeutics, Inc. insider transactions
Published Form 4 ownership transactions for ATRA.
| Date | Insider | Code | Shares | Price | Filing |
|---|---|---|---|---|---|
| 2026-07-22 | Redmile Group, LLC | F / D | 60 | - | 4 |
| 2026-07-22 | Redmile Group, LLC | M / A | 195,211 | - | 4 |
| 2026-06-11 | Cherry Brian N | A / A | 24,000 | 0 | 4 |
| 2026-06-09 | Ciongoli Gregory Austin | A / A | 12,000 | 0 | 4 |
| 2026-06-09 | HEIDEN WILLIAM K | A / A | 12,000 | 0 | 4 |
| 2026-06-09 | Fust Matthew K | A / A | 12,000 | 0 | 4 |
| 2026-05-18 | Nguyen AnhCo | S / D | 5,241 | 9.129 | 4 |
| 2026-05-18 | Grant-Huerta Yanina | S / D | 2,414 | 9.129 | 4 |
| 2026-05-07 | Panacea Innovation Ltd | S / D | 313,446 | 10.098 | 4 |
| 2026-05-07 | EcoR1 Capital, LLC | P / A | 507,407 | 9.35 | 4 |
| 2026-03-17 | Panacea Innovation Ltd | M / A | 259,163 | 0 | 4 |
| 2026-03-17 | Panacea Innovation Ltd | F / D | 5 | 5.23 | 4 |
| 2026-03-09 | Nguyen AnhCo | A / A | 81,100 | 0 | 4 |
| 2026-03-09 | Grant-Huerta Yanina | A / A | 20,300 | 0 | 4 |
| 2026-03-02 | Grant-Huerta Yanina | S / D | 24 | 5.077 | 4 |
| 2026-03-02 | Grant-Huerta Yanina | S / D | 1,603 | 5.081 | 4 |
| 2026-03-02 | Grant-Huerta Yanina | S / D | 377 | 5.082 | 4 |
| 2026-03-02 | Grant-Huerta Yanina | S / D | 100 | 5.083 | 4 |
| 2026-03-02 | Nguyen AnhCo | S / D | 198 | 5.079 | 4 |
| 2026-03-02 | Nguyen AnhCo | S / D | 58 | 5.08 | 4 |
| 2026-03-02 | Nguyen AnhCo | S / D | 1,298 | 5.086 | 4 |
| 2026-03-02 | Nguyen AnhCo | S / D | 1,442 | 5.087 | 4 |
| 2026-01-12 | Panacea Innovation Ltd | S / D | 80,554 | 6.071 | 4 |
| 2025-11-28 | Panacea Innovation Ltd | F / D | 1 | 14.03 | 4 |
| 2025-11-28 | Panacea Innovation Ltd | M / A | 48,737 | 0 | 4 |
| 2025-11-17 | Grant-Huerta Yanina | S / D | 1,645 | 13.186 | 4 |
| 2025-11-17 | Grant-Huerta Yanina | S / D | 85 | 13.188 | 4 |
| 2025-11-17 | Grant-Huerta Yanina | S / D | 74 | 13.191 | 4 |
| 2025-11-17 | Nguyen AnhCo | S / D | 2,859 | 13.186 | 4 |
| 2025-11-17 | Nguyen AnhCo | S / D | 56 | 13.188 | 4 |
| 2025-08-18 | Grant-Huerta Yanina | S / D | 86 | 11.613 | 4 |
| 2025-08-18 | Grant-Huerta Yanina | S / D | 55 | 11.609 | 4 |
| 2025-08-18 | Nguyen AnhCo | S / D | 1,281 | 11.615 | 4 |
| 2025-08-18 | Grant-Huerta Yanina | S / D | 1,668 | 11.614 | 4 |
| 2025-08-18 | Nguyen AnhCo | S / D | 1,620 | 11.617 | 4 |
| 2025-08-18 | Nguyen AnhCo | S / D | 57 | 11.613 | 4 |
| 2025-08-15 | Panacea Innovation Ltd | P / A | 55,000 | 12.19 | 4 |