ATRA · Atara Biotherapeutics, Inc. · Proposed Sales
$9.25
-0.15 (-1.60%)
At close · Oct 6
Return incl. dividend (before tax)
Going-concern doubt
— flagged Aug 12, 2026
Substantial doubt about the company's ability to continue as a going concern.
“Our existing cash, cash equivalents and short-term investments as of June 30, 2026 will not be sufficient to fund our planned operations for at least the next twelve months from the date of issuance of these financial statements. These conditions raise substantial doubt about our ability to continue as a going concern for at least 12 months after the issuance of the accompanying condensed consolidated financial statements.”View the 10-Q filed Aug 12, 2026
Market Cap
$82.31M
Shares
10.04M
Volume · Oct 5
39.32K
Avg daily vol (3M)
57.61K
Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.
| Filed | Seller | Relationship | Shares | Approx. Sale | Broker |
|---|---|---|---|---|---|
| 2026-08-26 | Nguyen AnhCo | Director, Officer | 5,062 | 2026-08-17 | Morgan Stanley Smith Barney LLC |
| 2026-05-18 | Grant-Huerta Yanina | Officer | 2,754 | 2026-05-18 | Morgan Stanley Smith Barney LLC |
| 2026-05-18 | Nguyen AnhCo | Director, Officer | 5,981 | 2026-05-18 | Morgan Stanley Smith Barney LLC |
| 2026-05-07 | Panacea Innovation Ltd | 10% Stockholder | 313,446 | 2026-05-07 | Cantor Fitzgerald |
| 2026-03-02 | Grant-Huerta Yanina | Officer | 2,355 | 2026-03-02 | Morgan Stanley Smith Barney LLC |
| 2026-03-02 | Nguyen AnhCo | Director, Officer | 3,355 | 2026-03-02 | Morgan Stanley Smith Barney LLC |
| 2026-01-12 | Panacea Innovation Ltd | 10% Stockholder | 40,000 | 2026-01-12 | Cantor Fitzgerald |
| 2025-11-17 | Grant-Huerta Yanina | Officer | 2,069 | 2025-11-17 | Morgan Stanley Smith Barney LLC |
| 2025-11-17 | Nguyen AnhCo | Director, Officer | 3,346 | 2025-11-17 | Morgan Stanley Smith Barney LLC |
| 2025-08-18 | Nguyen AnhCo | Director, Officer | 3,346 | 2025-08-18 | Morgan Stanley Smith Barney LLC |
| 2025-08-18 | Grant-Huerta Yanina | Officer | 2,048 | 2025-08-18 | Morgan Stanley Smith Barney LLC |
| 2025-05-16 | Grant-Huerta Yanina | Officer | 2,350 | 2025-05-16 | Morgan Stanley Smith Barney LLC |
| 2025-05-16 | Nguyen AnhCo | Director, Officer | 3,471 | 2025-05-16 | Morgan Stanley Smith Barney LLC |
| 2025-03-03 | Nguyen AnhCo | Officer, Director | 3,929 | 2025-03-03 | Morgan Stanley Smith Barney LLC |
| 2025-03-03 | Henrich Jill | Officer | 1,245 | 2025-03-03 | Morgan Stanley Smith Barney LLC |
| 2025-03-03 | Hyllengren Eric J | Officer | 1,426 | 2025-03-03 | Morgan Stanley Smith Barney LLC |
| 2024-11-18 | Murugan Amar | Former Officer | 1,342 | 2024-11-18 | Morgan Stanley Smith Barney LLC |
| 2024-11-18 | Nguyen AnhCo | Officer, Director | 1,857 | 2024-11-18 | Morgan Stanley Smith Barney LLC |
| 2024-11-18 | Hyllengren Eric J | Officer | 1,517 | 2024-11-18 | Morgan Stanley Smith Barney LLC |
| 2024-11-18 | Henrich Jill | Officer | 1,112 | 2024-11-18 | Morgan Stanley Smith Barney LLC |
| 2024-08-16 | Henrich Jill | Officer | 1,113 | 2024-08-16 | Morgan Stanley Smith Barney LLC |
| 2024-08-16 | Nguyen AnhCo | Officer | 2,114 | 2024-08-16 | Morgan Stanley Smith Barney LLC |
| 2024-08-16 | Touchon Pascal | Director, Officer | 3,525 | 2024-08-16 | Morgan Stanley Smith Barney LLC |
| 2024-08-16 | Murugan Amar | Officer | 1,342 | 2024-08-16 | Morgan Stanley Smith Barney LLC |
| 2024-08-16 | Hyllengren Eric J | Officer | 1,239 | 2024-08-16 | Morgan Stanley Smith Barney LLC |
| 2024-05-16 | Nguyen AnhCo | Officer | 10,728 | 2024-03-04 | Morgan Stanley Smith Barney LLC |
| 2024-05-16 | Henrich Jill | Officer | 27,754 | 2024-05-16 | Morgan Stanley Smith Barney LLC |
| 2024-05-16 | Touchon Pascal | Director, Officer | 88,061 | 2024-05-16 | Morgan Stanley Smith Barney LLC |
| 2024-05-16 | Nguyen AnhCo | Officer | 28,251 | 2024-05-16 | Morgan Stanley Smith Barney LLC |
| 2024-05-16 | Hyllengren Eric J | Officer | 30,907 | 2024-05-16 | Morgan Stanley Smith Barney LLC |
| 2024-05-16 | Murugan Amar | Officer | 34,946 | 2024-05-16 | Morgan Stanley Smith Barney LLC |
| 2024-03-04 | Murugan Amar | Officer | 10,024 | 2024-03-04 | Morgan Stanley Smith Barney LLC |
| 2024-03-04 | Hyllengren Eric J | Officer | 6,655 | 2024-03-04 | Morgan Stanley Smith Barney LLC |
| 2024-03-04 | Henrich Jill | Officer | 3,865 | 2024-03-04 | Morgan Stanley Smith Barney LLC |
| 2024-03-04 | Nguyen Tran | Officer | 10,728 | 2024-03-04 | Morgan Stanley Smith Barney LLC |
| 2024-03-04 | Touchon Pascal | Director, Officer | 24,816 | 2024-03-04 | Morgan Stanley Smith Barney LLC |
Showing 1–36 of 36 filings