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 Sep 11, 2015 involved selling 1,700 shares valued at $79.6K.
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 Sep 11, 2015, when they sold 1,700 shares at $46.83 per share.
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| $44.67 |
| Discretionary |
| Sep 10, 2015 | ATRA | $18.7K | Sale | 400 | $46.73 | Discretionary |
| Sep 10, 2015 | ATRA | $82.8K | Sale | 1,800 | $45.98 | Discretionary |
| Aug 28, 2015 | ATRA | $58.8K | Sale | 1,500 | $39.20 | Discretionary |
| Aug 28, 2015 | ATRA | $44.1K | Sale | 1,100 | $40.07 | Discretionary |
| Aug 27, 2015 | ATRA | $57.2K | Sale | 1,500 | $38.15 | Discretionary |
| Aug 27, 2015 | ATRA | $19.7K | Sale | 500 | $39.44 | Discretionary |
| Aug 27, 2015 | ATRA | $24.3K | Sale | 600 | $40.44 | Discretionary |
| Aug 17, 2015 | ATRA | $0 | Option Exercise | 5,907 | $N/A | Discretionary |
| Jul 31, 2015 | ATRA | $34.5K | Sale | 600 | $57.45 | Discretionary |
| Jul 31, 2015 | ATRA | $49.9K | Sale | 900 | $55.41 | Discretionary |
| Jul 31, 2015 | ATRA | $61.9K | Sale | 1,100 | $56.25 | Discretionary |
| Jul 30, 2015 | ATRA | $134.5K | Sale | 2,400 | $56.05 | Discretionary |
| Jul 30, 2015 | ATRA | $11.4K | Sale | 200 | $57.13 | Discretionary |
| Jul 17, 2015 | ATRA | $48.6K | Sale | 800 | $60.71 | Discretionary |
| Jul 17, 2015 | ATRA | $107.8K | Sale | 1,800 | $59.90 | Discretionary |
| Jul 16, 2015 | ATRA | $104.1K | Sale | 1,710 | $60.90 | Discretionary |
| Jul 16, 2015 | ATRA | $12.6K | Sale | 200 | $62.90 | Discretionary |
| Jul 16, 2015 | ATRA | $42.6K | Sale | 690 | $61.70 | Discretionary |
| Jul 1, 2015 | ATRA | $40.7K | Sale | 900 | $45.25 | Discretionary |
| Jul 1, 2015 | ATRA | $5.1K | Sale | 100 | $50.65 | Discretionary |
| Jul 1, 2015 | ATRA | $44.9K | Sale | 900 | $49.86 | Discretionary |
| Jul 1, 2015 | ATRA | $33.9K | Sale | 700 | $48.40 | Discretionary |
| Jun 30, 2015 | ATRA | $20.7K | Sale | 400 | $51.65 | Discretionary |
| Jun 30, 2015 | ATRA | $90.2K | Sale | 1,700 | $53.03 | Discretionary |
| Jun 30, 2015 | ATRA | $26.8K | Sale | 500 | $53.61 | Discretionary |
| Jun 18, 2015 | ATRA | $36.8K | Sale | 700 | $52.62 | Discretionary |
| Jun 18, 2015 | ATRA | $48.4K | Sale | 900 | $53.83 | Discretionary |
| Jun 18, 2015 | ATRA | $39.0K | Sale | 700 | $55.77 | Discretionary |