Mitchall G. Clark, Chief R & QA Officer at Atara Biotherapeutics, Inc. (ATRA), sold 4,153 shares at $31.67 ($132K) on 2015-11-16, disclosed to the SEC on 2015-11-18.
Scheduled sale ($132k) by Chief R & QA Officer under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Negative factors outweigh the positive ones.
| Filing → |
| ATRA | SELL | 2018-04-03 | $898K | — | Filing → |
| ATRA | SELL | 2018-03-28 | $3.8M | — | Filing → |
| ATRA | SELL | 2017-11-17 | $47K | — | Filing → |