Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 11,047 shares at $34.60 ($371K) on 2018-12-28, disclosed to the SEC on 2018-12-28.
Seasonal sale ($371k) by Chief Executive Officer — this insider has traded ATRA in December in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $32.82 | 3,247 | $107K | 28.7% |
| 2 | $32.82 | 3,247 | $107K | 28.7% |
| 3 | $34.19 | 653 | $22K | 6.0% |
| 4 | $34.60 | 3,400 | $118K | 31.7% |
| 5 | $35.40 | 500 | $18K | 4.8% |
| Total | $33.57 avg | 11,047 |
| $371K |
| 100% |
| Filing → |
| ATRA | SELL | 2019-04-29 | $262K | — | Filing → |
| ATRA | SELL | 2019-04-12 | $286K | — | Filing → |
| ATRA | SELL | 2019-04-01 | $81K | — | Filing → |