Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 5,850 shares at $22.85 ($135K) on 2019-05-29, disclosed to the SEC on 2019-05-31.
Open-market sale of $135k ATRA by Chief Executive Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $22.85 | 2,200 | $50K | 37.2% |
| 2 | $23.30 | 725 | $17K | 12.5% |
| 3 | $22.72 | 1,425 | $32K | 24.0% |
| 4 | $23.70 | 1,500 | $36K | 26.3% |
| Total | $23.09 avg | 5,850 | $135K | 100% |
| Filing → |
| ATRA | SELL | 2018-01-24 | $1.7M | — | Filing → |
| ATRA | SELL | 2017-07-26 | $91K | — | Filing → |