Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 10,905 shares at $34.39 ($369K) on 2018-10-23, disclosed to the SEC on 2018-10-23.
Seasonal sale ($369k) by Chief Executive Officer — this insider has traded ATRA in October in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $33.66 | 3,105 | $105K | 28.3% |
| 2 | $33.66 | 3,105 | $105K | 28.3% |
| 3 | $34.26 | 795 | $27K | 7.4% |
| 4 | $33.17 | 1,400 | $46K | 12.6% |
| 5 | $34.39 | 1,700 | $58K | 15.8% |
| 6 | $35.18 | 800 |
| $28K |
| 7.6% |
| Total | $33.87 avg | 10,905 | $369K | 100% |
| Filing → |
| ATRA | SELL | 2019-04-29 | $262K | — | Filing → |
| ATRA | SELL | 2019-04-12 | $286K | — | Filing → |
| ATRA | SELL | 2019-04-01 | $81K | — | Filing → |