Mitchall G. Clark, EVP & Chief R & QA Officer at Atara Biotherapeutics, Inc. (ATRA), sold 22,400 shares at $40.07 ($898K) on 2018-03-29, disclosed to the SEC on 2018-04-03.
Open-market sale of $898k ATRA by EVP & Chief R & QA Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.
| Filing → |
| ATRA | SELL | 2018-03-28 | $3.8M | — | Filing → |
| ATRA | SELL | 2017-11-17 | $47K | — | Filing → |
| ATRA | SELL | 2017-08-17 | $43K | — | Filing → |