Clark Mitchall G.
Insider CIK 1612094 · ATRA EVP & Chief R & QA Officer
Trades across companies
| Ticker | Code | Trade | Filed | Shares | Price | Value | Owned after | |
|---|---|---|---|---|---|---|---|---|
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-05-18 | 2018-05-21 | 25,860 | $50.03 | $1.29M | 107,972 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-05-16 | 2018-05-16 | 300 | $46.30 | $13.9K | 133,832 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-05-16 | 2018-05-16 | 4,347 | $46.04 | $200.1K | 134,132 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2018-05-15 | 2018-05-16 | 4,808 | — | $0 | 0 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2018-05-15 | 2018-05-16 | 4,808 | — | $0 | 138,479 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-29 | 2018-04-03 | 22,400 | $40.07 | $897.6K | 133,671 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2018-03-27 | 2018-03-28 | 11,406 | — | $0 | 3,125 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2018-03-27 | 2018-03-28 | 32,500 | — | $0 | 32,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2018-03-27 | 2018-03-28 | 28,848 | — | $0 | 11,194 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-27 | 2018-03-28 | 29,980 | $38.23 | $1.15M | 172,144 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-27 | 2018-03-28 | 11,103 | $41.10 | $456.3K | 156,071 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-27 | 2018-03-28 | 2,800 | $40.40 | $113.1K | 167,174 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-27 | 2018-03-28 | 22,794 | $36.43 | $830.4K | 233,480 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-27 | 2018-03-28 | 31,356 | $37.10 | $1.16M | 202,124 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2018-03-27 | 2018-03-28 | 2,170 | $39.53 | $85.8K | 169,974 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2018-03-27 | 2018-03-28 | 11,406 | $11.00 | $125.5K | 256,274 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2018-03-27 | 2018-03-28 | 28,848 | $25.15 | $725.5K | 212,368 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2018-03-27 | 2018-03-28 | 32,500 | $22.72 | $738.4K | 244,868 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2018-02-15 | 2018-02-20 | 7,211 | — | $0 | 4,808 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | F Tax w/h | 2018-02-15 | 2018-02-20 | 3,604 | $47.05 | $169.6K | 183,520 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2018-02-15 | 2018-02-20 | 7,211 | — | $0 | 187,124 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | F Tax w/h | 2018-02-09 | 2018-02-12 | 3,704 | $41.70 | $154.5K | 179,913 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2018-02-06 | 2018-02-08 | 50,000 | — | $0 | 50,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | F Tax w/h | 2018-02-06 | 2018-02-08 | 4,437 | $35.80 | $158.8K | 183,617 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2018-02-06 | 2018-02-08 | 25,000 | — | $0 | 188,054 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2017-11-16 | 2017-11-17 | 3,290 | $14.20 | $46.7K | 163,052 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2017-11-15 | 2017-11-17 | 7,212 | — | $0 | 12,019 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2017-11-15 | 2017-11-17 | 7,212 | — | $0 | 166,342 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2017-08-16 | 2017-08-17 | 3,021 | $14.33 | $43.3K | 159,130 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2017-08-15 | 2017-08-17 | 7,211 | — | $0 | 19,231 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2017-08-15 | 2017-08-17 | 7,211 | — | $0 | 162,151 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2017-05-16 | 2017-05-17 | 3,873 | $15.25 | $59.1K | 153,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2017-05-15 | 2017-05-17 | 7,212 | — | $0 | 26,442 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2017-05-15 | 2017-05-17 | 7,212 | — | $0 | 156,873 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2017-02-16 | 2017-02-16 | 3,059 | $15.96 | $48.8K | 149,661 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2017-02-15 | 2017-02-16 | 7,211 | — | $0 | 33,654 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2017-02-15 | 2017-02-16 | 7,211 | — | $0 | 152,720 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2017-02-06 | 2017-02-08 | 49,500 | — | $0 | 144,687 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2016-11-16 | 2016-11-17 | 2,995 | $19.53 | $58.5K | 95,187 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2016-11-15 | 2016-11-17 | 7,212 | — | $0 | 40,865 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2016-11-15 | 2016-11-17 | 7,212 | — | $0 | 98,182 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2016-08-15 | 2016-08-17 | 7,211 | — | $0 | 48,077 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2016-08-15 | 2016-08-17 | 7,211 | — | $0 | 90,970 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2016-05-16 | 2016-05-18 | 7,212 | — | $0 | 55,288 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2016-05-16 | 2016-05-18 | 4,153 | $15.15 | $62.9K | 83,759 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2016-05-16 | 2016-05-18 | 7,212 | — | $0 | 87,912 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2016-02-16 | 2016-02-18 | 7,211 | — | $0 | 62,500 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2016-02-16 | 2016-02-18 | 7,211 | — | $0 | 84,853 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2016-02-16 | 2016-02-18 | 4,153 | $15.35 | $63.7K | 80,700 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2016-02-09 | 2016-02-11 | 42,857 | — | $0 | 77,642 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2015-12-17 | 2015-12-21 | 65,000 | — | $0 | 65,000 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2015-11-16 | 2015-11-18 | 4,808 | — | $0 | 69,711 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2015-11-16 | 2015-11-18 | 4,153 | $31.67 | $131.5K | 34,785 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2015-11-16 | 2015-11-18 | 4,808 | — | $0 | 38,938 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2015-08-17 | 2015-08-19 | 9,615 | — | $0 | 74,519 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2015-08-17 | 2015-08-19 | 1,291 | — | $0 | 40,042 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2015-08-17 | 2015-08-19 | 469 | — | $0 | 14,531 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2015-08-17 | 2015-08-19 | 9,615 | — | $0 | 40,199 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2015-08-17 | 2015-08-19 | 1,291 | $25.15 | $32.5K | 41,490 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2015-08-17 | 2015-08-19 | 469 | $11.00 | $5.2K | 41,959 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | S Sale | 2015-08-17 | 2015-08-19 | 7,829 | $46.19 | $361.6K | 34,130 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2015-05-15 | 2015-05-19 | 31,250 | — | $0 | 84,134 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | F Tax w/h | 2015-05-15 | 2015-05-19 | 13,066 | $37.30 | $487.4K | 30,584 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise | 2015-05-15 | 2015-05-19 | 31,250 | — | $0 | 43,650 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2015-01-16 | 2015-01-21 | 41,333 | — | $0 | 41,333 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award | 2015-01-16 | 2015-01-21 | 12,400 | — | $0 | 12,400 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | A Award deriv | 2014-10-21 | 2014-10-23 | 115,384 | — | $0 | 115,384 | SEC↗ |
| ATRA Atara Biotherapeutics, Inc | M Exercise deriv | 2014-10-15 | 2014-10-16 | 15,000 | — | $0 | 15,000 | SEC↗ |