Nguyen AnhCo insider trades
Nguyen AnhCo has filed 16 Form 4s with the SEC that we hold, all for Atara Biotherapeutics, Inc. (ATRA), as President and CEO, Director. Across all of them we count 0 purchases worth $0 and 22 sales worth $315.7K reported on Form 4. In the last 12 months: 0 purchases ($0) and 8 sales ($142.4K). The largest single trade was a sale of 5,241 shares of Atara Biotherapeutics, Inc. worth $47.9K, dated 2026-05-18. Of 1 sale filed since we began reading the 10b5-1 checkbox, 0 (0%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2023-08-18 and the latest 2026-08-26.
Atara Biotherapeutics, Inc. (ATRA)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2023-08-16 | S, sale reported on Form 4 | 9,277 | $15.3K | 2023-08-18 |
| 2023-08-16 | S, sale reported on Form 4 | 5,849 | $9.7K | 2023-08-18 |
| 2023-11-16 | S, sale reported on Form 4 | 8,856 | $3.5K | 2023-11-20 |
| 2024-03-04 | S, sale reported on Form 4 | 10,746 | $7.7K | 2024-03-06 |
| 2024-05-16 | S, sale reported on Form 4 | 42,899 | $26.6K | 2024-05-20 |
| 2024-08-16 | S, sale reported on Form 4 | 297 | $2.0K | 2024-08-20 |
| 2024-08-16 | S, sale reported on Form 4 | 1,468 | $9.7K | 2024-08-20 |
| 2024-08-16 | S, sale reported on Form 4 | 56 | $371 | 2024-08-20 |
| 2024-11-18 | S, sale reported on Form 4 | 1,664 | $18.6K | 2024-11-20 |
| 2025-03-03 | S, sale reported on Form 4 | 3,331 | $23.3K | 2025-03-05 |
| 2025-05-16 | S, sale reported on Form 4 | 3,276 | $22.1K | 2025-05-20 |
| 2025-08-18 | S, sale reported on Form 4 | 57 | $662 | 2025-08-20 |
| 2025-08-18 | S, sale reported on Form 4 | 1,620 | $18.8K | 2025-08-20 |
| 2025-08-18 | S, sale reported on Form 4 | 1,281 | $14.9K | 2025-08-20 |
| 2025-11-17 | S, sale reported on Form 4 | 56 | $739 | 2025-11-19 |
| 2025-11-17 | S, sale reported on Form 4 | 2,859 | $37.7K | 2025-11-19 |
| 2026-03-02 | S, sale reported on Form 4 | 58 | $295 | 2026-03-04 |
| 2026-03-02 | S, sale reported on Form 4 | 1,298 | $6.6K | 2026-03-04 |
| 2026-03-02 | S, sale reported on Form 4 | 198 | $1.0K | 2026-03-04 |
| 2026-03-02 | S, sale reported on Form 4 | 1,442 | $7.3K | 2026-03-04 |
| 2026-05-18 | S, sale reported on Form 4 | 5,241 | $47.9K | 2026-05-20 |
| 2026-08-17 | S, sale reported on Form 4 | 5,062 | $40.9K | 2026-08-26 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1977970) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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