Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 28,124 shares at $39.01 ($1.1M) on 2019-02-12, disclosed to the SEC on 2019-02-12.
Seasonal sale ($1.1M) by Chief Executive Officer — this insider has traded ATRA in February in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $38.49 | 20,324 | $782K | 72.1% |
| 2 | $38.52 | 3,900 | $150K | 13.9% |
| 3 | $39.01 | 3,900 | $152K | 14.0% |
| Total | $38.57 avg | 28,124 | $1.1M | 100% |
| Filing → |
| ATRA | SELL | 2019-04-29 | $262K | — | Filing → |
| ATRA | SELL | 2019-04-12 | $286K | — | Filing → |
| ATRA | SELL | 2019-04-01 | $81K | — | Filing → |