Isaac E. Ciechanover serves as Executive at Atara Biotherapeutics, Inc., where they oversee executive responsibilities. Since joining the company, Isaac E. Ciechanover has executed 350 insider transactions totaling $25.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 25, 2018 involved selling 8,400 shares valued at $287.5K.
Isaac E. Ciechanover currently holds 290,687 shares of Atara Biotherapeutics, Inc. (ATRA), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Isaac E. Ciechanover has been a net seller of ATRA stock. They have purchased $0 and sold $25.6M worth of shares.
Isaac E. Ciechanover's most recent insider trade was on Jan 25, 2018, when they sold 8,400 shares at $34.23 per share.
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| $33.22 |
| Discretionary |
| Jan 24, 2018 | ATRA | $141.0K | Sale | 4,100 | $34.40 | Discretionary |
| Jan 24, 2018 | ATRA | $77.0K | Sale | 2,200 | $34.99 | Discretionary |
| Jan 24, 2018 | ATRA | $268.9K | Sale | 8,100 | $33.20 | Discretionary |
| Jan 23, 2018 | ATRA | $307.9K | Sale | 8,516 | $36.15 | Discretionary |
| Jan 23, 2018 | ATRA | $534.7K | Sale | 15,084 | $35.45 | Discretionary |
| Jan 23, 2018 | ATRA | $17.0K | Sale | 500 | $34.05 | Discretionary |
| Jan 22, 2018 | ATRA | $32.2K | Sale | 1,000 | $32.17 | Discretionary |
| Jan 22, 2018 | ATRA | $215.0K | Sale | 6,500 | $33.08 | Discretionary |
| Jan 22, 2018 | ATRA | $68.1K | Sale | 2,000 | $34.04 | Discretionary |
| Jan 22, 2018 | ATRA | $15.5K | Sale | 500 | $30.93 | Discretionary |
| Jan 16, 2018 | ATRA | $18.2K | Sale | 600 | $30.38 | Discretionary |
| Jan 12, 2018 | ATRA | $3.0K | Sale | 100 | $30.05 | Discretionary |
| Jan 11, 2018 | ATRA | $53.7K | Sale | 2,500 | $21.49 | Discretionary |
| Jan 11, 2018 | ATRA | $385.2K | Sale | 17,500 | $22.01 | Discretionary |
| Jan 10, 2018 | ATRA | $88.4K | Sale | 4,500 | $19.64 | Discretionary |
| Jan 10, 2018 | ATRA | $83.6K | Sale | 4,100 | $20.38 | Discretionary |
| Dec 29, 2017 | ATRA | $55.2K | Sale | 2,900 | $19.04 | Discretionary |
| Dec 29, 2017 | ATRA | $54.8K | Sale | 2,700 | $20.28 | Discretionary |
| Dec 29, 2017 | ATRA | $262.7K | Sale | 14,400 | $18.24 | Discretionary |
| Dec 28, 2017 | ATRA | $33.3K | Sale | 2,200 | $15.15 | Discretionary |
| Dec 13, 2017 | ATRA | $32.4K | Sale | 2,200 | $14.73 | Discretionary |
| Dec 12, 2017 | ATRA | $32.0K | Sale | 2,200 | $14.56 | Discretionary |
| Nov 30, 2017 | ATRA | $31.7K | Sale | 2,200 | $14.40 | Discretionary |
| Nov 29, 2017 | ATRA | $31.0K | Sale | 2,200 | $14.09 | Discretionary |
| Nov 15, 2017 | ATRA | $0 | Option Exercise | 5,908 | $N/A | Discretionary |
| Nov 14, 2017 | ATRA | $29.5K | Sale | 2,200 | $13.41 | Discretionary |
| Nov 13, 2017 | ATRA | $29.8K | Sale | 2,200 | $13.53 | Discretionary |
| Oct 27, 2017 | ATRA | $29.9K | Sale | 2,200 | $13.60 | Discretionary |