Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>

Common stock purchase or sale:
Transaction Date |
Reported DateTime |
Company | Symbol | Insider Relationship |
Shares Traded |
Average Price |
Total Amount |
Shares Owned |
Filing |
2025-05-16 Sale |
2025-05-20 4:58 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo President and CEO |
3,276 | $6.763 | $22,156 | 70,847 (Direct) |
View |
2025-03-03 Sale |
2025-03-05 5:17 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo President and CEO |
3,331 | $6.997 | $23,307 | 74,123 (Direct) |
View |
2024-11-18 Sale |
2024-11-20 6:04 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo President and CEO |
1,664 | $11.2 | $18,633 | 77,454 (Direct) |
View |
2024-08-16 Sale |
2024-08-20 6:27 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
1,821 | $6.6292 | $12,072 | 34,118 (Direct) |
View |
2024-05-16 Sale |
2024-05-20 8:34 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
42,899 | $0.617 | $26,469 | 898,498 (Direct) |
View |
2024-03-04 Sale |
2024-03-06 6:18 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
10,746 | $0.72 | $7,737 | 941,397 (Direct) |
View |
2023-11-16 Sale |
2023-11-20 5:31 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
8,856 | $0.389 | $3,445 | 277,143 (Direct) |
View |
2023-08-16 Sale |
2023-08-18 6:25 pm |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
15,126 | $1.6526 | $24,997 | 285,999 (Direct) |
View |
Stock options: Exercise, Award, Grant, Conversion
Transaction Date |
Reported DateTime |
Exercisable Expiration |
Company | Symnbol | Insider Relationship |
Shares Traded |
Conversion Price |
Shares Owned |
Filing |
2024-09-09 Option Award |
2024-09-11 5:03 pm |
N/A N/A |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo President and CEO |
45,000 | $0 | 79,118 (Direct) |
View |
2024-01-08 Option Award |
2024-01-09 4:40 pm |
N/A N/A |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
675,000 | $0 | 952,143 (Direct) |
View |
Ownership |
2023-06-09 4:30 pm |
N/A N/A |
Atara Biotherapeutics Inc. | ATRA | Nguyen AnhCo EVP, Chief Sci. & Tech Officer |
0 | $0 | 934,425 (Direct) |
View |