See how company executives and directors have been buying or selling shares over the past 30 days. Insider trading activity can help investors better understand company leadership's actions.
No Insider Transactions found for Atara Biotherapeutics, Inc.
Browse insider buying and selling activity reported to the SEC over the past year, including who traded, when they traded, and the value of each transaction.
DATE INSIDER |
INSIDER | TYPE | SHARES | PRICE | SHARES PRICE VALUE |
|---|---|---|---|---|---|
Sep 04, 2026 Cherry Brian N |
Cherry Brian N
|
Buy |
104,166 | $9.60 | 104,166 $9.60 $999,994 |
Aug 17, 2026 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
5,062 | $8.08 | 5,062 $8.08 $40,883 |
May 18, 2026 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
5,241 | $9.13 | 5,241 $9.13 $47,845 |
May 18, 2026 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
2,414 | $9.13 | 2,414 $9.13 $22,036 |
May 07, 2026 Panacea Innovation Ltd |
Panacea Innovation Ltd
|
Sell |
313,446 | $10.10 | 313,446 $10.10 $3,165,021 |
May 07, 2026 EcoR1 Capital, LLC |
EcoR1 Capital, LLC
|
Buy |
507,407 | $9.35 | 507,407 $9.35 $4,744,255 |
Mar 02, 2026 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
198 | $5.08 | 198 $5.08 $1,006 |
Mar 02, 2026 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
58 | $5.08 | 58 $5.08 $295 |
Mar 02, 2026 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
1,298 | $5.09 | 1,298 $5.09 $6,602 |
Mar 02, 2026 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
1,442 | $5.09 | 1,442 $5.09 $7,335 |
Mar 02, 2026 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
24 | $5.08 | 24 $5.08 $122 |
Mar 02, 2026 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
1,603 | $5.08 | 1,603 $5.08 $8,145 |
Mar 02, 2026 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
377 | $5.08 | 377 $5.08 $1,916 |
Mar 02, 2026 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
100 | $5.08 | 100 $5.08 $508 |
Jan 12, 2026 Panacea Innovation Ltd |
Panacea Innovation Ltd
|
Sell |
80,554 | $6.07 | 80,554 $6.07 $489,019 |
Nov 17, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
85 | $13.19 | 85 $13.19 $1,121 |
Nov 17, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
74 | $13.19 | 74 $13.19 $976 |
Nov 17, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
1,645 | $13.19 | 1,645 $13.19 $21,691 |
Nov 17, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
56 | $13.19 | 56 $13.19 $739 |
Nov 17, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
2,859 | $13.19 | 2,859 $13.19 $37,699 |
View older insider trading records reported to the SEC to research long-term buying and selling trends.
DATE INSIDER |
INSIDER | TYPE | SHARES | PRICE | SHARES PRICE VALUE |
|---|---|---|---|---|---|
Aug 18, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
57 | $11.61 | 57 $11.61 $662 |
Aug 18, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
1,281 | $11.62 | 1,281 $11.62 $14,879 |
Aug 18, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
86 | $11.61 | 86 $11.61 $999 |
Aug 18, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
55 | $11.61 | 55 $11.61 $638 |
Aug 18, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
1,620 | $11.62 | 1,620 $11.62 $18,820 |
Aug 18, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
1,668 | $11.61 | 1,668 $11.61 $19,372 |
Aug 15, 2025 Panacea Innovation Ltd |
Panacea Innovation Ltd
|
Buy |
55,000 | $12.19 | 55,000 $12.19 $670,423 |
Jul 17, 2025 Panacea Innovation Ltd |
Panacea Innovation Ltd
|
Buy |
19,335 | $9.64 | 19,335 $9.64 $186,372 |
May 16, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
3,276 | $6.76 | 3,276 $6.76 $22,156 |
May 16, 2025 Grant-Huerta Yanina |
Grant-Huerta Yanina
CAO
|
Sell |
2,218 | $6.76 | 2,218 $6.76 $15,000 |
Mar 03, 2025 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
3,331 | $7.00 | 3,331 $7.00 $23,307 |
Mar 03, 2025 Henrich Jill |
Henrich Jill
EVP, Chief Regulatory Officer
|
Sell |
1,059 | $7.00 | 1,059 $7.00 $7,410 |
Mar 03, 2025 Hyllengren Eric J |
Hyllengren Eric J
EVP, CFO and COO
|
Sell |
1,211 | $7.00 | 1,211 $7.00 $8,473 |
Nov 18, 2024 Henrich Jill |
Henrich Jill
EVP, Chief Regulatory Officer
|
Sell |
1,000 | $11.20 | 1,000 $11.20 $11,198 |
Nov 18, 2024 Hyllengren Eric J |
Hyllengren Eric J
EVP, CFO and COO
|
Sell |
1,364 | $11.20 | 1,364 $11.20 $15,274 |
Nov 18, 2024 Nguyen AnhCo |
Nguyen AnhCo
President and CEO
|
Sell |
1,664 | $11.20 | 1,664 $11.20 $18,633 |
Aug 16, 2024 Touchon Pascal |
Touchon Pascal
President and CEO
|
Sell |
2,762 | $6.63 | 2,762 $6.63 $18,309 |
Aug 16, 2024 Hyllengren Eric J |
Hyllengren Eric J
EVP, CFO
|
Sell |
1,041 | $6.63 | 1,041 $6.63 $6,901 |
Aug 16, 2024 Henrich Jill |
Henrich Jill
EVP, Global Head RA & Quality
|
Sell |
132 | $6.63 | 132 $6.63 $875 |
Aug 16, 2024 Henrich Jill |
Henrich Jill
EVP, Global Head RA & Quality
|
Sell |
831 | $6.63 | 831 $6.63 $5,509 |
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