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ALLIANCEBERNSTEIN L.P.
> ATRA
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | Atara Biotherapeutics, Inc. | ATRA | 176,700 | 57,860 | 284,487,000 | -60,149,000 | $1,610.00 |
| 03/31/2023 | Atara Biotherapeutics, Inc. | ATRA | 118,840 | -800 | 344,636,000 | -47,783,000 | $2,900.00 |
| 12/31/2022 | Atara Biotherapeutics, Inc. | ATRA | 119,640 | 12,600 | 392,419,000 | 392,014,000 | $3,280.00 |
| 09/30/2022 | Atara Biotherapeutics, Inc. | ATRA | 107,040 | 32,400 | 405,000 | -176,000 | $3.78 |
| 06/30/2022 | Atara Biotherapeutics, Inc. | ATRA | 74,640 | 800 | 581,000 | -105,000 | $7.78 |
| 03/31/2022 | Atara Biotherapeutics, Inc. | ATRA | 73,840 | 200 | 686,000 | -475,000 | $9.29 |
| 12/31/2021 | Atara Biotherapeutics, Inc. | ATRA | 73,640 | -1,700 | 1,161,000 | -188,000 | $15.77 |
| 09/30/2021 | Atara Biotherapeutics, Inc. | ATRA | 75,340 | -5,800 | 1,349,000 | 87,000 | $17.91 |
| 06/30/2021 | Atara Biotherapeutics, Inc. | ATRA | 81,140 | 0 | 1,262,000 | 97,000 | $15.55 |
| 03/31/2021 | Atara Biotherapeutics, Inc. | ATRA | 81,140 | 2,400 | 1,165,000 | -381,000 | $14.36 |
| 12/31/2020 | Atara Biotherapeutics, Inc. | ATRA | 78,740 | 0 | 1,546,000 | 526,000 | $19.63 |
| 09/30/2020 | Atara Biotherapeutics, Inc. | ATRA | 78,740 | 9,200 | 1,020,000 | 7,000 | $12.95 |
| 06/30/2020 | Atara Biotherapeutics, Inc. | ATRA | 69,540 | 6,600 | 1,013,000 | 477,000 | $14.57 |
| 03/31/2020 | Atara Biotherapeutics, Inc. | ATRA | 62,940 | 8,300 | 536,000 | -364,000 | $8.52 |
| 12/31/2019 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 0 | 900,000 | 128,000 | $16.47 |
| 09/30/2019 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 0 | 772,000 | -327,000 | $14.13 |
| 06/30/2019 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 0 | 1,099,000 | -1,073,000 | $20.11 |
| 03/31/2019 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 0 | 2,172,000 | 274,000 | $39.75 |
| 12/31/2018 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 0 | 1,898,000 | -361,000 | $34.74 |
| 09/30/2018 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 0 | 2,259,000 | 251,000 | $41.34 |
| 06/30/2018 | Atara Biotherapeutics, Inc. | ATRA | 54,640 | 25,800 | 2,008,000 | 883,000 | $36.75 |
| 03/31/2018 | Atara Biotherapeutics, Inc. | ATRA | 28,840 | 1,100 | 1,125,000 | 623,000 | $39.01 |
| 12/31/2017 | Atara Biotherapeutics, Inc. | ATRA | 27,740 | 0 | 502,000 | 43,000 | $18.10 |
| 09/30/2017 | Atara Biotherapeutics, Inc. | ATRA | 27,740 | 0 | 459,000 | 71,000 | $16.55 |
| 06/30/2017 | Atara Biotherapeutics, Inc. | ATRA | 27,740 | 9,200 | 388,000 | 7,000 | $13.99 |
| 03/31/2017 | Atara Biotherapeutics, Inc. | ATRA | 18,540 | -2,500 | 381,000 | 82,000 | $20.55 |
| 12/31/2016 | Atara Biotherapeutics, Inc. | ATRA | 21,040 | 0 | 299,000 | -151,000 | $14.21 |
| 09/30/2016 | Atara Biotherapeutics, Inc. | ATRA | 21,040 | 21,040 | 450,000 | 450,000 | $21.39 |
| 06/30/2016 | Atara Biotherapeutics, Inc. | ATRA | 22,940 | 22,940 | 516,000 | 516,000 | $22.49 |
| 03/31/2016 | Atara Biotherapeutics, Inc. | ATRA | 18,640 | -2,800 | 355,000 | -211,000 | $19.05 |
| 12/31/2015 | Atara Biotherapeutics, Inc. | ATRA | 21,440 | 21,440 | 566,000 | 566,000 | $26.40 |
| 09/30/2015 | Atara Biotherapeutics, Inc. | ATRA | 21,440 | 21,440 | 674,000 | 674,000 | $31.44 |
| 06/30/2015 | Atara Biotherapeutics, Inc. | ATRA | 21,500 | 21,500 | 1,134,000 | 1,134,000 | $52.74 |
| 03/31/2015 | Atara Biotherapeutics, Inc. | ATRA | 6,100 | 6,100 | 254,000 | 254,000 | $41.64 |
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