Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 3,000 shares at $34.84 ($105K) on 2019-01-23, disclosed to the SEC on 2019-01-25.
Seasonal sale ($105k) by Chief Executive Officer — this insider has traded ATRA in January in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| ATRA | SELL | 2019-05-15 | $192K | — | Filing → |
| ATRA | SELL | 2019-04-29 | $262K | — | Filing → |
| ATRA | SELL | 2019-04-12 | $286K | — | Filing → |