Atara Biotherapeutics, Inc. has filed 1,108 documents with the SEC available on Filing Fan. Browse annual reports (10-K), quarterly reports (10-Q), earnings releases (8-K), proxy statements, and more on Filing Fan. Filing Fan provides income statements, balance sheets, cash flow statements, and segment data parsed directly from EDGAR filings. All financial data is sourced from publicly available SEC regulatory filings.
| Form | Date | Description |
|---|---|---|
| SC 13D/A | 2026-07-24 | Beneficial Ownership Report (Amended) |
| 4 | 2026-07-24 | Statement of Changes in Beneficial Ownership |
| 3 | 2026-07-06 | Initial Statement of Beneficial Ownership |
| 8-K | 2026-06-26 | Departure/Appointment of Directors or Officers |
| 4 | 2026-06-15 | Statement of Changes in Beneficial Ownership |
| 3 | 2026-06-15 | Initial Statement of Beneficial Ownership |
| S-8 | 2026-06-12 | Employee Benefit Plan Registration |
| 8-K | 2026-06-12 | Departure/Appointment of Directors or Officers; Submission of Matters to a Vote of Security Holders |
| 4 | 2026-06-11 | Statement of Changes in Beneficial Ownership |
| 4 | 2026-06-11 | Statement of Changes in Beneficial Ownership |