| Lastest Insider Transactions Of Atara Biotherapeutics, Inc. ( ATRA ) |
| Symbol | Company Name | Insider Name | Title | Date | Transation | Share | Price | Amount | File Date |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-05-21 | Sell | 8,800 | 51.74 | 455,313 | 2018-05-22 19:02:27 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-05-18 | Sell | 25,860 | 50.03 | 1,293,776 | 2018-05-21 18:32:34 |
| ATRA | Atara Biotherapeutics, Inc. | Porter Derrell | SVP, Head of Global Commercial | 2018-05-15 | Sell | 16,334 | 45.02 | 735,357 | 2018-05-16 20:41:56 |
| ATRA | Atara Biotherapeutics, Inc. | Porter Derrell | SVP, Head of Global Commercial | 2018-05-15 | Option Exercise | 16,334 | 14.30 | 233,576 | 2018-05-16 20:41:56 |
| ATRA | Atara Biotherapeutics, Inc. | Fust Matthew K | Directior | 2018-05-14 | Sell | 12,286 | 43.57 | 535,301 | 2018-05-16 20:40:42 |
| ATRA | Atara Biotherapeutics, Inc. | Fust Matthew K | Directior | 2018-05-14 | Option Exercise | 534 | 0.00 | 0 | 2018-05-16 20:40:42 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-05-15 | Sell | 4,647 | 46.06 | 214,026 | 2018-05-16 20:38:50 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-05-15 | Option Exercise | 4,808 | 0.00 | 0 | 2018-05-16 20:38:50 |
| ATRA | Atara Biotherapeutics, Inc. | Gallagher Carol Giltner | Directior | 2018-05-15 | Sell | 273 | 46.06 | 12,574 | 2018-05-16 20:37:54 |
| ATRA | Atara Biotherapeutics, Inc. | Gallagher Carol Giltner | Directior | 2018-05-15 | Option Exercise | 545 | 0.00 | 0 | 2018-05-16 20:37:54 |
| ATRA | Atara Biotherapeutics, Inc. | Haqq Christopher | EVP, R&D & Chief Scientific Of | 2018-05-15 | Sell | 25,775 | 45.30 | 1,167,480 | 2018-05-16 20:37:01 |
| ATRA | Atara Biotherapeutics, Inc. | Haqq Christopher | EVP, R&D & Chief Scientific Of | 2018-05-15 | Option Exercise | 25,000 | 11.00 | 275,000 | 2018-05-16 20:37:01 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-05-09 | Sell | 8,800 | 39.85 | 350,637 | 2018-05-10 19:46:16 |
| ATRA | Atara Biotherapeutics, Inc. | Porter Derrell | SVP, Head of Global Commercial | 2018-05-08 | Sell | 1,544 | 40.15 | 61,992 | 2018-05-08 20:18:40 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-04-11 | Sell | 8,800 | 41.87 | 368,472 | 2018-04-12 18:14:43 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-03-26 | Sell | 200 | 38.40 | 7,680 | 2018-04-03 18:55:17 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-03-29 | Sell | 22,400 | 40.07 | 897,568 | 2018-04-03 16:14:23 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-03-27 | Sell | 100,203 | 37.87 | 3,795,062 | 2018-03-28 20:10:08 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-03-27 | Option Exercise | 72,754 | 21.85 | 1,589,393 | 2018-03-28 20:10:08 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-03-26 | Sell | 8,800 | 38.59 | 339,549 | 2018-03-27 20:30:15 |
| ATRA | Atara Biotherapeutics, Inc. | Haqq Christopher | EVP, R&D & Chief Scientific Of | 2018-03-26 | Sell | 18,327 | 39.79 | 729,265 | 2018-03-27 16:16:39 |
| ATRA | Atara Biotherapeutics, Inc. | MCGRATH JOHN | EVP & Chief Financial Officer | 2018-03-19 | Sell | 6,000 | 40.41 | 242,460 | 2018-03-20 18:30:36 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-03-15 | Sell | 8,800 | 42.13 | 370,748 | 2018-03-19 16:36:51 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-03-12 | Sell | 1,000 | 46.31 | 46,314 | 2018-03-14 17:23:38 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-02-20 | Sell | 17,800 | 44.65 | 794,733 | 2018-02-22 19:42:53 |
| ATRA | Atara Biotherapeutics, Inc. | Gallagher Carol Giltner | Directior | 2018-02-15 | Sell | 1,183 | 46.50 | 55,010 | 2018-02-20 20:25:40 |
| ATRA | Atara Biotherapeutics, Inc. | Gallagher Carol Giltner | Directior | 2018-02-15 | Option Exercise | 2,365 | 0.00 | 0 | 2018-02-20 20:25:40 |
| ATRA | Atara Biotherapeutics, Inc. | Fust Matthew K | Directior | 2018-02-15 | Option Exercise | 1,603 | 0.00 | 0 | 2018-02-20 20:25:08 |
| ATRA | Atara Biotherapeutics, Inc. | Haqq Christopher | EVP, R&D & Chief Scientific Of | 2018-02-15 | Option Exercise | 553 | 0.00 | 0 | 2018-02-20 20:24:32 |
| ATRA | Atara Biotherapeutics, Inc. | Clark Mitchall G. | EVP & Chief R & QA Officer | 2018-02-15 | Option Exercise | 7,211 | 0.00 | 0 | 2018-02-20 20:23:56 |
| ATRA | Atara Biotherapeutics, Inc. | Soffer Gad | EVP & Chief Strategy Officer | 2018-02-15 | Option Exercise | 2,764 | 0.00 | 0 | 2018-02-20 20:23:22 |
| ATRA | Atara Biotherapeutics, Inc. | MCGRATH JOHN | EVP & Chief Financial Officer | 2018-02-15 | Sell | 13,000 | 47.07 | 611,925 | 2018-02-20 20:22:49 |
| ATRA | Atara Biotherapeutics, Inc. | MCGRATH JOHN | EVP & Chief Financial Officer | 2018-02-15 | Option Exercise | 5,132 | 0.00 | 0 | 2018-02-20 20:22:49 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-02-15 | Sell | 20,000 | 46.92 | 938,459 | 2018-02-20 20:22:07 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-02-15 | Option Exercise | 3,938 | 0.00 | 0 | 2018-02-20 20:22:07 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-02-13 | Sell | 20,000 | 46.80 | 935,956 | 2018-02-14 19:54:39 |
| ATRA | Atara Biotherapeutics, Inc. | Turner Heather D | Former EVP, GC & Sec. | 2018-02-09 | Sell | 12,214 | 38.01 | 464,210 | 2018-02-12 21:00:07 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-02-08 | Sell | 8,800 | 37.44 | 329,429 | 2018-02-12 17:09:00 |
| ATRA | Atara Biotherapeutics, Inc. | Ciechanover Isaac E. | Chief Executive Officer | 2018-01-25 | Sell | 19,300 | 35.26 | 680,534 | 2018-01-29 19:39:02 |
