Isaac E. Ciechanover, Chief Executive Officer at Atara Biotherapeutics, Inc. (ATRA), sold 48,500 shares at $30.93 ($1.7M) on 2018-01-22, disclosed to the SEC on 2018-01-24.
Open-market sale of $1.7M 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.
Something here stands out, but not much.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $30.93 | 500 | $15K | 0.9% |
| 2 | $32.17 | 1,000 | $32K | 1.9% |
| 3 | $33.08 | 6,500 | $215K | 12.8% |
| 4 | $34.04 | 2,000 | $68K | 4.1% |
| 5 | $34.05 | 500 | $17K | 1.0% |
| 6 | $35.45 | 15,084 |
| $535K |
| 31.9% |
| 7 | $36.15 | 8,516 | $308K | 18.4% |
| 8 | $33.20 | 8,100 | $269K | 16.0% |
| 9 | $34.40 | 4,100 | $141K | 8.4% |
| 10 | $34.99 | 2,200 | $77K | 4.6% |
| Total | $34.58 avg | 48,500 | $1.7M | 100% |
| Filing → |
| ATRA | SELL | 2019-01-25 | $273K | — | Filing → |
| ATRA | SELL | 2017-07-26 | $91K | — | Filing → |