Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 7,800 shares at $38.65 ($315K) on 2018-11-28, disclosed to the SEC on 2018-11-29.
Seasonal sale ($315k) by Chief Executive Officer — this insider has traded ATRA in November in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $38.65 | 2,700 | $104K | 33.1% |
| 2 | $39.54 | 1,200 | $47K | 15.1% |
| 3 | $41.13 | 1,400 | $58K | 18.3% |
| 4 | $42.26 | 2,500 | $106K | 33.5% |
| Total | $40.39 avg | 7,800 | $315K | 100% |
| Filing → |
| ATRA | SELL | 2019-04-29 | $262K | — | Filing → |
| ATRA | SELL | 2019-04-12 | $286K | — | Filing → |
| ATRA | SELL | 2019-04-01 | $81K | — | Filing → |