ATRA
Atara Biotherapeutics, Inc.Company with tickers: ATRA
Market Cap
$92.08M
Shares Outstanding
9,010,172
CIK
1604464
CUSIP
046513206
13F Activity (30d)
2 filings
1 filers
Website
Visit website
Investor Relations
Investor relations
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 |
|---|---|---|---|---|---|
| 2026-05-18 | 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 1–35 of 35 filings