Insider Shareholders with Direct Ownership of Atara Biotherapeutics, Inc. (ATRA)
This section provides a comprehensive overview of the insiders with direct ownership of Atara Biotherapeutics, Inc. (ATRA). You can find detailed information about the size and nature of each insider's ownership stake, as well as the latest updates on their holdings.
Atara Biotherapeutics, Inc. Insider List
| Insider | Adquired | Disposed | Held | # of Trades | Last Transaction |
|---|---|---|---|---|---|
|
Adiumentum Capital Fund I Lp
Director |
75,572 | 0 | 1,209,395 $13.9 Million | 1 |
May 16, 2025
Added 5.88%
|
| 535,325 | 0 | 563,325 $6.48 Million | 4 |
Nov 10, 2023
Added 44.23%
|
|
|
Jakob Dupont
EVP, Head of R&D |
293,713 | 49,169 | 290,794 $3.34 Million | 19 |
Mar 02, 2023
Reduced 1.71%
|
|
Charlene A. Banard
EVP, Chief Technical Officer |
139,700 | 19,040 | 276,010 $3.17 Million | 2 |
May 16, 2023
Reduced 6.45%
|
|
Utpal Koppikar
Chief Financial Officer |
106,493 | 62,365 | 181,978 $2.09 Million | 18 |
Mar 02, 2023
Reduced 3.64%
|
|
Kristin Yarema
Chief Commercial Officer |
114,908 | 761 | 171,415 $1.97 Million | 5 |
Mar 01, 2022
Added 20.99%
|
|
Manher Joshi
EVP, Chief Medical Officer |
0 | 19,262 | 171,284 $1.97 Million | 2 |
Nov 16, 2023
Reduced 6.69%
|
| 88,500 | 0 | 115,689 $1.33 Million | 3 |
May 31, 2023
Added 33.01%
|
|
|
Joe Newell
Chief Operations Officer |
65,715 | 74,821 | 113,097 $1.3 Million | 24 |
Nov 16, 2021
Reduced 2.86%
|
| 1,910,291 | 336,392 | 77,955 $896,482 | 24 |
Jun 10, 2025
Added 9.13%
|
|
|
Anh Co Nguyen
President and CEO |
720,000 | 87,719 | 70,847 $814,740 | 10 |
May 16, 2025
Reduced 4.42%
|
| 509,050 | 67,034 | 56,231 $646,656 | 10 |
Mar 03, 2025
Reduced 2.11%
|
|
| 31,500 | 0 | 43,500 $500,250 | 2 |
Jun 23, 2022
Added 32.03%
|
|
|
Yanina Grant Huerta
Chief Accounting Officer |
0 | 2,218 | 37,067 $426,270 | 1 |
May 16, 2025
Reduced 5.65%
|
| 516,328 | 0 | 33,012 $379,638 | 7 |
Jun 10, 2025
Added 19.17%
|
|
| 31,500 | 0 | 31,500 $362,250 | 2 |
Jun 23, 2022
Added 39.42%
|
|
|
Amar Murugan
EVP, Chief Legal Officer |
723,945 | 95,919 | 26,827 $308,510 | 18 |
Aug 16, 2024
Reduced 0.33%
|
| 346,328 | 0 | 22,188 $255,162 | 6 |
Jun 10, 2025
Added 26.08%
|
|
|
Jill Henrich
EVP, Chief Regulatory Officer |
450,000 | 39,264 | 18,679 $214,808 | 8 |
Mar 03, 2025
Reduced 5.37%
|
| 246,328 | 13,354 | 18,188 $209,162 | 6 |
Jun 10, 2025
Added 30.09%
|
|
| 246,328 | 0 | 17,368 $199,732 | 5 |
Jun 10, 2025
Added 31.07%
|
|
| 235,328 | 0 | 16,928 $194,672 | 4 |
Jun 10, 2025
Added 31.62%
|