| Date Filed | Type | Description |
| 08/08/2023 |
10-Q
| Quarterly Report for the period ended June 30, 2023 |
| 08/08/2023 |
8-K
| Quarterly results |
| 06/09/2023 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 05/12/2023 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 05/08/2023 |
10-Q
| Quarterly Report for the period ended March 31, 2023 |
| 05/08/2023 |
8-K
| Quarterly results |
| 03/31/2023 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 03/24/2023 |
PRE 14A
| Form PRE 14A - Other preliminary proxy statements: |
| 03/10/2023 |
8-K
| Regulation FD Disclosure Interactive Data |
| 02/14/2023 |
SC 13G/A
| Point72 Asset Management, L.P. reports a 0.2% stake in Atara Biotherapeutics, Inc. |
| 02/14/2023 |
SC 13G/A
| MAVERICK CAPITAL LTD reports a 6.6% stake in Atara Biotherapeutics, Inc. |
| 02/14/2023 |
EFFECT
| Form EFFECT - Notice of Effectiveness: |
| 02/09/2023 |
SC 13G/A
| VANGUARD GROUP INC reports a 7.6% stake in Atara Biotherapeutics Inc. |
| 02/09/2023 |
SC 13G/A
| FMR LLC reports a 0.1% stake in ATARA BIOTHERAPEUTICS INC |
| 02/08/2023 |
10-K
| Annual Report for the period ended December 31, 2022 |
| 02/08/2023 |
POSASR
| Form POSASR - Post-effective Amendment to an automatic shelf registration statement: |
| 02/08/2023 |
8-K
| Quarterly results |
| 02/08/2023 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals: |
| 02/03/2023 |
SC 13G
| Form SC 13G - Statement of acquisition of beneficial ownership by individuals: |
| 01/18/2023 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 01/06/2023 |
8-K
| Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant ... |
| 12/20/2022 |
8-K
| Quarterly results |
| 12/19/2022 |
8-K
| Quarterly results |
| 11/08/2022 |
10-Q
| Quarterly Report for the period ended September 30, 2022 |
| 11/08/2022 |
8-K
| Quarterly results |
| 09/28/2022 |
8-K
| Quarterly results |
| 09/27/2022 |
8-K
| Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits ... |
| 08/08/2022 |
10-Q
| Quarterly Report for the period ended June 30, 2022 |
| 08/08/2022 |
8-K
| Quarterly results |
| 07/22/2022 |
S-8
| Form S-8 - Securities to be offered to employees in employee benefit plans: |
| 06/24/2022 |
8-K
| Quarterly results |
| 05/19/2022 |
8-K
| Quarterly results |
| 05/05/2022 |
10-Q
| Quarterly Report for the period ended March 31, 2022 |
| 05/05/2022 |
8-K
| Quarterly results |
|