Form 4 for ATRA Atara Biotherapeutics, Inc.
Accepted 2025-11-19 00:00:00 ET · period of report 2025-11-17 · accession 0000905148-25-004141 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M | 2025-11-19 | 2025-11-17 | ATRA | Nguyen AnhCo | Pres, CEO, Dir | S - Sale | $13.19 | -2,915 | 65.0K | -4% | -$38.4K |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-11-17 | S | D | 56 | $13.19 | 64,974 | D | — | — | (F2) The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on November 17, 2025 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees. |
| 2 | Common | Common Stock | 2025-11-17 | S | D | 2,859 | $13.19 | 65,030 | D | — | — | (F2) The sale price of the reporting person's shares represents the weighted average price of all shares sold by a broker on November 17, 2025 on behalf of a group of employees of the Issuer to satisfy the payment of withholding tax liability of such employees. |