Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 7,800 shares at $39.62 ($310K) on 2018-09-18, disclosed to the SEC on 2018-09-20.
Seasonal sale ($310k) by Chief Executive Officer — this insider has traded ATRA in September in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $39.62 | 3,900 | $155K | 49.8% |
| 2 | $39.99 | 3,900 | $156K | 50.2% |
| Total | $39.80 avg | 7,800 | $310K | 100% |
| Filing → |
| ATRA | SELL | 2019-04-29 | $262K | — | Filing → |
| ATRA | SELL | 2019-04-12 | $286K | — | Filing → |
| ATRA | SELL | 2019-04-01 | $81K | — | Filing → |