AnhCo Nguyen, President and CEO at Atara Biotherapeutics, Inc. (ATRA), sold 5,062 shares at $8.08 ($41K) on 2026-08-17, disclosed to the SEC on 2026-08-26.
Seasonal sale ($41k) by President and CEO — this insider has traded ATRA in August in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| ATRA | SELL | 2025-11-19 | $38K | — | Filing → |
| ATRA | SELL | 2025-08-20 | $34K | — | Filing → |
| ATRA | SELL | 2025-05-20 | $22K | — | Filing → |