Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem 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>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2024-07-08 4:32 pm Sale | 2024-06-30 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | BlackRock, Inc. BLK | 0 0.000% | -283,489 (Position Closed) | Filing History |
| 2024-05-22 6:18 pm Purchase | 2024-05-15 | 13D | ATARA BIOTHERAPEUTICS INC ATRA | Adiumentum Capital Fund I LP | 322,637 6.700% | 322,637 (New Position) | Filing History |
| 2024-03-18 4:13 pm Purchase | 2024-03-08 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | Citadel Advisors LLC | 261,325 6.400% | 261,325 (New Position) | Filing History |
| 2024-02-14 5:03 pm Sale | 2023-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | MAVERICK CAPITAL LTD | 0 0.000% | -251,641 (Position Closed) | Filing History |
| 2024-02-14 4:26 pm Purchase | 2023-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | Redmile Group LLC | 412,056 9.900% | 18,556 (+4.72%) | Filing History |
| 2024-02-13 4:58 pm Sale | 2023-12-29 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | VANGUARD GROUP INC | 267,442 6.560% | -21,000 (-7.28%) | Filing History |
| 2024-02-09 4:22 pm Sale | 2024-02-09 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | Wasatch Advisors LP | 0 0.000% | -335,641 (Position Closed) | Filing History |
| 2024-02-06 4:45 pm Sale | 2023-12-29 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | GOLDMAN SACHS GROUP INC GS | 23,225 0.600% | -221,105 (-90.49%) | Filing History |
| 2024-01-26 5:25 pm Sale | 2023-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | BlackRock, Inc. BLK | 283,489 7.000% | -82,597 (-22.56%) | Filing History |
| 2024-01-22 1:58 pm Sale | 2023-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | STATE STREET CORP STT | 111,368 2.730% | -194,622 (-63.60%) | Filing History |
| 2024-01-09 4:22 pm Sale | 2023-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | BAUPOST GROUP LLC | 0 0.000% | -324,945 (Position Closed) | Filing History |
| 2023-12-07 2:45 pm Sale | 2023-11-30 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | JPMorgan Chase & Co. JPM | 88,277 2.100% | -212,146 (-70.62%) | Filing History |
| 2023-11-20 7:00 pm Purchase | 2023-11-16 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | EcoR1 Capital, LLC | 402,682 9.900% | 402,682 (New Position) | Filing History |
| 2023-02-14 4:18 pm Purchase | 2022-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | Redmile Group LLC | 393,500 9.900% | 29,551 (+8.12%) | Filing History |
| 2023-02-14 4:06 pm Sale | 2022-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | Point72 Asset Management, L.P. | 8,647 0.200% | -176,719 (-95.34%) | Filing History |
| 2023-02-14 07:31 am Sale | 2022-12-31 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | MAVERICK CAPITAL LTD | 251,641 6.600% | -62,592 (-19.92%) | Filing History |
| 2023-02-09 11:07 am Purchase | 2022-12-30 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | VANGUARD GROUP INC | 288,442 7.600% | 5,421 (+1.92%) | Filing History |
| 2023-02-09 08:23 am Sale | 2023-02-09 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | FMR LLC | 5,301 0.139% | -219,229 (-97.64%) | Filing History |
| 2023-02-08 3:46 pm Purchase | 2023-02-08 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | Wasatch Advisors LP | 335,641 8.800% | 335,641 (New Position) | Filing History |
| 2023-02-06 5:36 pm Purchase | 2022-12-30 | 13G | ATARA BIOTHERAPEUTICS INC ATRA | GOLDMAN SACHS GROUP INC GS | 244,330 6.400% | 244,330 (New Position) | Filing History |