Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Atara Biotherapeutics, Inc. (ATRA) since 2015 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Atara Biotherapeutics, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1604464.
Total stock buying since 2015: $1,974,975.
Total stock sales since 2015: $62,070,364.
Total stock option exercises since 2015: $4,725,654.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 74,335 | $856,820 | 15,862 | $131,707 | 0 | $0 |
| 2024 | 0 | $0 | 269,430 | $262,008 | 0 | $0 |
| 2023 | 370,000 | $93,603 | 251,889 | $431,464 | 0 | $0 |
| 2022 | 0 | $0 | 129,649 | $840,536 | 5,000 | $47,900 |
| 2021 | 34,354 | $499,102 | 155,899 | $2,549,679 | 31,000 | $350,950 |
| 2020 | 0 | $0 | 63,721 | $951,151 | 7,000 | $85,050 |
| 2019 | 2,000 | $39,000 | 202,674 | $7,245,766 | 74,000 | $1,420,820 |
| 2018 | 2,000 | $73,600 | 763,070 | $29,808,461 | 191,041 | $2,623,222 |
| 2017 | 0 | $0 | 415,169 | $6,948,740 | 138,803 | $0 |
| 2016 | 3,000 | $41,565 | 220,270 | $4,175,224 | 168,719 | $0 |
| 2015 | 17,500 | $371,285 | 195,406 | $8,725,628 | 387,306 | $197,712 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-08 | 55,000 | $670,450 | 4,767 | $55,363 | 0 | $0 |
| 2025-07 | 19,335 | $186,370 | 0 | $0 | 0 | $0 |
| 2025-05 | 0 | $0 | 5,494 | $37,155 | 0 | $0 |
| 2025-03 | 0 | $0 | 5,601 | $39,189 | 0 | $0 |
| 2024-11 | 0 | $0 | 4,028 | $45,105 | 0 | $0 |
| 2024-08 | 0 | $0 | 8,050 | $53,369 | 0 | $0 |
| 2024-05 | 0 | $0 | 211,204 | $130,310 | 0 | $0 |
| 2024-03 | 0 | $0 | 46,148 | $33,224 | 0 | $0 |
| 2023-11 | 370,000 | $93,603 | 65,084 | $25,314 | 0 | $0 |
| 2023-08 | 0 | $0 | 73,071 | $120,726 | 0 | $0 |
| 2023-06 | 0 | $0 | 14,291 | $23,723 | 0 | $0 |
| 2023-05 | 0 | $0 | 65,113 | $132,633 | 0 | $0 |
| 2023-03 | 0 | $0 | 31,845 | $115,500 | 0 | $0 |
| 2023-02 | 0 | $0 | 2,485 | $13,568 | 0 | $0 |
| 2022-11 | 0 | $0 | 29,800 | $133,810 | 0 | $0 |
| 2022-08 | 0 | $0 | 28,300 | $142,481 | 0 | $0 |
| 2022-06 | 0 | $0 | 20,073 | $135,336 | 0 | $0 |
| 2022-05 | 0 | $0 | 26,591 | $141,372 | 0 | $0 |
| 2022-03 | 0 | $0 | 17,389 | $171,390 | 0 | $0 |
| 2022-02 | 0 | $0 | 2,496 | $36,097 | 0 | $0 |
| 2022-01 | 0 | $0 | 5,000 | $80,050 | 5,000 | $47,900 |
| 2021-12 | 0 | $0 | 5,000 | $89,690 | 5,000 | $47,900 |
| 2021-11 | 0 | $0 | 45,066 | $803,866 | 8,500 | $90,425 |
| 2021-09 | 0 | $0 | 13,616 | $227,146 | 10,500 | $127,575 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-18 | Grant-huerta Yanina (Chief Accounting Officer) | Sale | 1,809 | 11.61 | 21,006 |
| 2025-08-18 | Nguyen Anhco (President and CEO) | Sale | 2,958 | 11.62 | 34,357 |
| 2025-08-15 | Huang James | Buy | 55,000 | 12.19 | 670,450 |
| 2025-07-17 | Huang James | Buy | 19,335 | 9.64 | 186,370 |
| 2025-05-16 | Grant-huerta Yanina (Chief Accounting Officer) | Sale | 2,218 | 6.76 | 15,000 |
| 2025-05-16 | Nguyen Anhco (President and CEO) | Sale | 3,276 | 6.76 | 22,155 |
| 2025-03-03 | Henrich Jill (EVP, Chief Regulatory Officer) | Sale | 1,059 | 7.00 | 7,409 |
| 2025-03-03 | Nguyen Anhco (President and CEO) | Sale | 3,331 | 7.00 | 23,307 |
| 2025-03-03 | Hyllengren Eric J (EVP, CFO and COO) | Sale | 1,211 | 7.00 | 8,473 |
| 2024-11-18 | Henrich Jill (EVP, Chief Regulatory Officer) | Sale | 1,000 | 11.20 | 11,198 |
| 2024-11-18 | Nguyen Anhco (President and CEO) | Sale | 1,664 | 11.20 | 18,633 |
| 2024-11-18 | Hyllengren Eric J (EVP, CFO and COO) | Sale | 1,364 | 11.20 | 15,274 |
| 2024-08-16 | Henrich Jill (EVP, Global Head RA & Quality) | Sale | 963 | 6.63 | 6,384 |
| 2024-08-16 | Nguyen Anhco (EVP, Chief Sci. & Tech Officer) | Sale | 1,821 | 6.63 | 12,073 |
| 2024-08-16 | Hyllengren Eric J (EVP, CFO) | Sale | 1,070 | 6.63 | 7,094 |
| 2024-08-16 | Murugan Amar (EVP, Chief Legal Officer) | Sale | 1,158 | 6.63 | 7,677 |
| 2024-08-16 | Touchon Pascal (President and CEO) | Sale | 3,038 | 6.63 | 20,141 |
| 2024-05-16 | Henrich Jill (EVP, Global Head RA & Quality) | Sale | 25,750 | .62 | 15,887 |
| 2024-05-16 | Nguyen Anhco (EVP, Chief Sci. & Tech Officer) | Sale | 42,899 | .62 | 26,468 |
| 2024-05-16 | Hyllengren Eric J (EVP, CFO) | Sale | 28,648 | .62 | 17,675 |
| 2024-05-16 | Murugan Amar (EVP, Chief Legal Officer) | Sale | 32,401 | .62 | 19,991 |
| 2024-05-16 | Touchon Pascal (President and CEO) | Sale | 81,506 | .62 | 50,289 |
| 2024-03-04 | Henrich Jill (EVP, Global Head RA & Quality) | Sale | 3,879 | .72 | 2,792 |
| 2024-03-04 | Nguyen Anhco (EVP, Chief Sci. & Tech Officer) | Sale | 10,746 | .72 | 7,737 |
| 2024-03-04 | Hyllengren Eric J (EVP, CFO) | Sale | 6,679 | .72 | 4,808 |
| 2024-03-04 | Touchon Pascal (President and CEO) | Sale | 24,844 | .72 | 17,887 |
| 2023-11-16 | Henrich Jill (EVP, Global Head RA & Quality) | Sale | 3,267 | .39 | 1,270 |
| 2023-11-16 | Joshi Manher (EVP, Chief Medical Officer) | Sale | 12,287 | .39 | 4,779 |
| 2023-11-16 | Nguyen Anhco (EVP, Chief Sci. & Tech Officer) | Sale | 8,856 | .39 | 3,444 |
| 2023-11-16 | Hyllengren Eric J (SVP, CFO) | Sale | 11,958 | .39 | 4,651 |
| 2023-11-16 | Murugan Amar (EVP, Chief Legal Officer) | Sale | 8,307 | .39 | 3,231 |
| 2023-11-16 | Touchon Pascal (President and CEO) | Sale | 20,409 | .39 | 7,939 |
| 2023-11-14 | Gallagher Carol Giltner | Buy | 90,980 | .31 | 28,203 |
| 2023-11-13 | Gallagher Carol Giltner | Buy | 179,020 | .22 | 40,100 |
| 2023-11-10 | Heiden William K | Buy | 100,000 | .25 | 25,300 |
| 2023-08-16 | Henrich Jill (EVP, Global Head RA & Quality) | Sale | 3,346 | 1.65 | 5,534 |
| 2023-08-16 | Joshi Manher (EVP, Chief Medical Officer) | Sale | 6,975 | 1.65 | 11,522 |
| 2023-08-16 | Nguyen Anhco (EVP, Chief Sci. & Tech Officer) | Sale | 15,126 | 1.65 | 24,988 |
| 2023-08-16 | Hyllengren Eric J (SVP, CFO) | Sale | 8,186 | 1.65 | 13,531 |
| 2023-08-16 | Murugan Amar (EVP, Chief Legal Officer) | Sale | 8,672 | 1.65 | 14,326 |
| 2023-08-16 | Touchon Pascal (President and CEO) | Sale | 30,766 | 1.65 | 50,825 |
| 2023-06-27 | Touchon Pascal (President and CEO) | Sale | 14,291 | 1.66 | 23,723 |
| 2023-05-16 | Hyllengren Eric J (SVP, CFO) | Sale | 7,918 | 2.04 | 16,128 |
| 2023-05-16 | Banard Charlene A. (EVP, Chief Technical Officer) | Sale | 19,040 | 2.04 | 38,784 |
| 2023-05-16 | Murugan Amar (EVP, Chief Legal Officer) | Sale | 8,389 | 2.04 | 17,088 |
| 2023-05-16 | Touchon Pascal (President and CEO) | Sale | 29,766 | 2.04 | 60,633 |
| 2023-03-02 | Murugan Amar (SVP, GC & Secretary) | Sale | 4,221 | 3.63 | 15,309 |
| 2023-03-02 | Touchon Pascal (President and CEO) | Sale | 15,679 | 3.63 | 56,867 |
| 2023-03-02 | Koppikar Utpal (Chief Financial Officer) | Sale | 6,871 | 3.63 | 24,921 |
| 2023-03-02 | Dupont Jakob (EVP, Head of R&D) | Sale | 5,074 | 3.63 | 18,403 |
| 2023-02-07 | Koppikar Utpal (Chief Financial Officer) | Sale | 2,485 | 5.46 | 13,568 |
| 2022-11-16 | Murugan Amar (SVP, GC & Secretary) | Sale | 3,612 | 4.49 | 16,217 |
| 2022-11-16 | Touchon Pascal (President and CEO) | Sale | 15,591 | 4.49 | 70,003 |
| 2022-11-16 | Koppikar Utpal (Chief Financial Officer) | Sale | 6,255 | 4.49 | 28,091 |
| 2022-11-16 | Dupont Jakob (EVP, Head of R&D) | Sale | 4,342 | 4.49 | 19,499 |
| 2022-08-16 | Murugan Amar (SVP, GC & Secretary) | Sale | 3,430 | 5.03 | 17,266 |
| 2022-08-16 | Touchon Pascal (President and CEO) | Sale | 14,806 | 5.04 | 74,548 |
| 2022-08-16 | Koppikar Utpal (Chief Financial Officer) | Sale | 5,940 | 5.04 | 29,907 |
| 2022-08-16 | Dupont Jakob (EVP, Head of R&D) | Sale | 4,124 | 5.03 | 20,760 |
| 2022-06-27 | Touchon Pascal (President and CEO) | Sale | 14,220 | 7.20 | 102,384 |
| 2022-06-08 | Koppikar Utpal (Chief Financial Officer) | Sale | 5,853 | 5.63 | 32,952 |
| 2022-05-17 | Murugan Amar (SVP, GC & Secretary) | Sale | 3,223 | 5.32 | 17,136 |
| 2022-05-17 | Touchon Pascal (President and CEO) | Sale | 13,913 | 5.32 | 73,961 |
| 2022-05-17 | Koppikar Utpal (Chief Financial Officer) | Sale | 5,582 | 5.32 | 29,679 |
| 2022-05-17 | Dupont Jakob (EVP, Head of R&D) | Sale | 3,873 | 5.32 | 20,596 |
| 2022-03-01 | Murugan Amar (SVP, GC & Secretary) | Sale | 2,577 | 9.86 | 25,401 |
| 2022-03-01 | Touchon Pascal (President and CEO) | Sale | 8,828 | 9.86 | 87,008 |
| 2022-03-01 | Koppikar Utpal (Chief Financial Officer) | Sale | 3,763 | 9.86 | 37,091 |
| 2022-03-01 | Dupont Jakob (EVP, Head of R&D) | Sale | 2,221 | 9.86 | 21,890 |
| 2022-02-07 | Koppikar Utpal (Chief Financial Officer) | Sale | 2,496 | 14.46 | 36,097 |
| 2022-01-03 | Dupont Jakob (EVP, Head of R&D) | Sale | 5,000 | 16.01 | 80,050 |
| 2022-01-03 | Dupont Jakob (EVP, Head of R&D) | Option Ex | 5,000 | 9.58 | 47,900 |
| 2021-12-01 | Dupont Jakob (EVP, Head of R&D) | Sale | 5,000 | 17.94 | 89,690 |
| 2021-12-01 | Dupont Jakob (EVP, Head of R&D) | Option Ex | 5,000 | 9.58 | 47,900 |
| 2021-11-16 | Murugan Amar (SVP, GC & Secretary) | Sale | 2,124 | 17.12 | 36,356 |
| 2021-11-16 | Touchon Pascal (President and CEO) | Sale | 8,402 | 17.12 | 143,817 |
| 2021-11-16 | Koppikar Utpal (Chief Financial Officer) | Sale | 3,655 | 17.12 | 62,562 |
| 2021-11-16 | Newell Joe (Chief Operations Officer) | Sale | 3,332 | 17.12 | 57,033 |
| 2021-11-16 | Dupont Jakob (EVP, Head of R&D) | Sale | 2,199 | 17.12 | 37,640 |
| 2021-11-15 | Newell Joe (Chief Operations Officer) | Sale | 7,000 | 17.71 | 124,005 |
| 2021-11-15 | Newell Joe (Chief Operations Officer) | Option Ex | 3,500 | 12.15 | 42,525 |
| 2021-11-04 | Fust Matthew K | Sale | 13,354 | 19.50 | 260,403 |
| 2021-11-02 | Dupont Jakob (EVP, Head of R&D) | Sale | 5,000 | 16.41 | 82,050 |
| 2021-11-02 | Dupont Jakob (EVP, Head of R&D) | Option Ex | 5,000 | 9.58 | 47,900 |
| 2021-09-22 | Newell Joe (Chief Operations Officer) | Sale | 10,500 | 17.00 | 178,500 |
| 2021-09-22 | Newell Joe (Chief Operations Officer) | Option Ex | 10,500 | 12.15 | 127,575 |
| 2021-09-15 | Newell Joe (Chief Operations Officer) | Sale | 3,116 | 15.61 | 48,646 |
| 2021-08-30 | Newell Joe (Chief Operations Officer) | Sale | 3,500 | 15.00 | 52,500 |
| 2021-08-17 | Murugan Amar (SVP, GC & Secretary) | Sale | 2,080 | 12.53 | 26,066 |
| 2021-08-17 | Touchon Pascal (President and CEO) | Sale | 8,223 | 12.53 | 103,050 |
| 2021-08-17 | Koppikar Utpal (Chief Financial Officer) | Sale | 3,579 | 12.53 | 44,852 |
| 2021-08-17 | Newell Joe (Chief Operations Officer) | Sale | 2,426 | 12.53 | 30,402 |
| 2021-08-17 | Dupont Jakob (EVP, Head of R&D) | Sale | 2,152 | 12.53 | 26,968 |
| 2021-06-25 | Touchon Pascal (President and CEO) | Sale | 14,194 | 16.32 | 231,660 |
| 2021-06-14 | Yarema Kristin (Chief Commercial Officer) | Buy | 32,333 | 14.53 | 469,798 |
| 2021-06-11 | Yarema Kristin (Chief Commercial Officer) | Buy | 2,021 | 14.50 | 29,304 |
| 2021-06-08 | Koppikar Utpal (Chief Financial Officer) | Sale | 5,820 | 14.06 | 81,829 |
| 2021-05-18 | Murugan Amar (SVP, GC & Secretary) | Sale | 5,681 | 14.55 | 82,658 |
| 2021-05-18 | Yarema Kristin (Chief Commercial Officer) | Sale | 761 | 14.55 | 11,072 |
| 2021-05-18 | Touchon Pascal (President and CEO) | Sale | 8,313 | 14.55 | 120,954 |
| 2021-05-18 | Koppikar Utpal (Chief Financial Officer) | Sale | 3,616 | 14.55 | 52,612 |
| 2021-05-18 | Newell Joe (Chief Operations Officer) | Sale | 2,453 | 14.55 | 35,691 |
| 2021-03-26 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,761 | 14.58 | 25,675 |
| 2021-03-15 | Newell Joe (Chief Operations Officer) | Sale | 7,000 | 17.41 | 121,870 |
| 2021-03-15 | Newell Joe (Chief Operations Officer) | Option Ex | 3,500 | 12.15 | 42,525 |
| 2021-03-02 | Touchon Pascal (President and CEO) | Sale | 4,887 | 16.74 | 81,808 |
| 2021-03-02 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,461 | 16.74 | 24,457 |
| 2021-03-02 | Newell Joe (Chief Operations Officer) | Sale | 1,665 | 16.74 | 27,872 |
| 2021-02-08 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,759 | 20.39 | 35,866 |
| 2021-02-08 | Newell Joe (Chief Operations Officer) | Sale | 3,886 | 20.39 | 79,235 |
| 2021-01-15 | Newell Joe (Chief Operations Officer) | Sale | 7,000 | 18.84 | 131,880 |
| 2021-01-15 | Newell Joe (Chief Operations Officer) | Option Ex | 3,500 | 12.15 | 42,525 |
| 2020-12-16 | Newell Joe (Chief Operations Officer) | Sale | 7,000 | 23.11 | 161,735 |
| 2020-12-16 | Newell Joe (Chief Operations Officer) | Option Ex | 3,500 | 12.15 | 42,525 |
| 2020-11-17 | Touchon Pascal (President and CEO) | Sale | 4,716 | 19.77 | 93,254 |
| 2020-11-17 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,469 | 19.77 | 29,048 |
| 2020-11-17 | Newell Joe (Chief Operations Officer) | Sale | 1,648 | 19.77 | 32,587 |
| 2020-11-13 | Newell Joe (Chief Operations Officer) | Sale | 7,500 | 18.74 | 140,550 |
| 2020-11-13 | Newell Joe (Chief Operations Officer) | Option Ex | 3,500 | 12.15 | 42,525 |
| 2020-08-18 | Touchon Pascal (President and CEO) | Sale | 4,807 | 12.09 | 58,116 |
| 2020-08-18 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,496 | 12.09 | 18,086 |
| 2020-08-18 | Newell Joe (Chief Operations Officer) | Sale | 1,678 | 12.09 | 20,287 |
| 2020-06-25 | Touchon Pascal (President and CEO) | Sale | 12,135 | 12.92 | 156,784 |
| 2020-06-09 | Koppikar Utpal (Chief Financial Officer) | Sale | 3,924 | 10.18 | 39,946 |
| 2020-05-18 | Touchon Pascal (President and CEO) | Sale | 3,195 | 11.22 | 35,847 |
| 2020-05-18 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,428 | 11.22 | 16,022 |
| 2020-05-18 | Newell Joe (Chief Operations Officer) | Sale | 1,603 | 11.22 | 17,985 |
| 2020-04-06 | Newell Joe (Chief Operations Officer) | Sale | 657 | 7.94 | 5,216 |
| 2020-03-27 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,827 | 9.17 | 16,753 |
| 2020-03-27 | Newell Joe (Chief Operations Officer) | Sale | 2,740 | 9.17 | 25,125 |
| 2020-02-06 | Koppikar Utpal (Chief Financial Officer) | Sale | 1,781 | 14.21 | 25,308 |
| 2020-02-06 | Newell Joe (Chief Tech. Operations Officer) | Sale | 4,117 | 14.21 | 58,502 |
| 2019-09-27 | Newell Joe (Chief Tech. Operations Officer) | Sale | 3,500 | 13.51 | 47,285 |
| 2019-06-27 | Dobmeier Eric (Director) | Buy | 2,000 | 19.50 | 39,000 |
| 2019-05-30 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 2,925 | 23.21 | 67,889 |
| 2019-05-29 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 2,925 | 23.07 | 67,494 |
| 2019-05-14 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 24.92 | 97,188 |
| 2019-05-13 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 24.59 | 95,901 |
| 2019-05-06 | Newell Joe (Chief Tech. Operations Officer) | Sale | 1,500 | 35.00 | 52,500 |
| 2019-05-06 | Newell Joe (Chief Tech. Operations Officer) | Option Ex | 1,500 | 20.40 | 30,599 |
| 2019-04-26 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 33.47 | 130,533 |
| 2019-04-25 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 33.78 | 131,742 |
| 2019-04-11 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 36.27 | 141,453 |
| 2019-04-10 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 37.04 | 144,456 |
| 2019-04-01 | Newell Joe (Chief Tech. Operations Officer) | Sale | 1,500 | 39.96 | 59,940 |
| 2019-04-01 | Newell Joe (Chief Tech. Operations Officer) | Option Ex | 1,500 | 20.40 | 30,599 |
| 2019-03-29 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 40.76 | 158,944 |
| 2019-03-28 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 37.79 | 147,369 |
| 2019-03-15 | Ciechanover Isaac E. (Chief Executive Officer) | Sale | 3,900 | 38.73 | 151,047 |
| 2019-03-15 | Marcus Joel S (Director) | Sale | 20,000 | 38.25 | 765,000 |
Insider trading activities including stock purchases, stock sales, and option exercises of ATRA listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Atara Biotherapeutics, Inc. (symbol ATRA, CIK number 1604464) see the Securities and Exchange Commission (SEC) website.