Isaac E. Ciechanover is CEO at Atara Biotherapeutics, Inc. (ATRA). They have made 64 open-market trades across 1 company since 2015, most recently 2019-05-30.
CIK 0001604464
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 64 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ATRA | 290,687 | $2.8M |
Shares reported on the most recent Form 4, priced at the 2019-05-31 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ATRA | SELL · 10b5-1 | 2019-05-29 | 2019-05-31 | $23.24 | $85K | -0.6% | -11.1% | -37.3% |
| ATRA | SELL | 2019-05-29 | 2019-05-31 | $22.85 | $50K | -0.6% | -11.1% | -37.3% |
| ATRA | SELL | 2019-05-13 | 2019-05-15 | $24.61 | $192K | -10.7% | -12.6% | -43.6% |
| ATRA | SELL | 2019-04-25 | 2019-04-29 | $33.54 | $262K | -21.3% | -32.6% | -57.4% |
| ATRA | SELL | 2019-04-10 | 2019-04-12 | $36.66 | $286K | -7.6% | -33.1% | -49.4% |
| ATRA | SELL | 2019-03-29 | 2019-04-01 | $39.81 | $147K | -9.6% | -18.4% | -51.0% |
| ATRA | SELL | 2019-03-28 | 2019-04-01 | $37.31 | $134K | -9.6% | -18.4% | -51.0% |
| ATRA | SELL · 10b5-1 | 2019-03-28 | 2019-04-01 | $38.45 | $81K | -9.6% | -18.4% | -51.0% |
| ATRA | SELL | 2019-03-14 | 2019-03-18 | $39.77 | $437K | -1.9% | -17.3% | -44.0% |
| ATRA | SELL | 2019-02-27 | 2019-03-01 | $36.14 | $282K | +6.2% | +4.2% | -40.5% |
| ATRA | SELL | 2019-02-11 | 2019-02-12 | $38.77 | $302K | +5.5% | -1.5% | -38.8% |
| ATRA | SELL | 2019-01-24 | 2019-01-25 | $34.98 | $121K | +7.6% | +16.7% | -6.6% |
| ATRA | SELL · 10b5-1 | 2019-01-23 | 2019-01-25 | $35.06 | $273K | +7.6% | +16.7% | -6.6% |
| ATRA | SELL | 2019-01-23 | 2019-01-25 | $34.84 | $105K | +7.6% | +16.7% | -6.6% |
| ATRA | SELL | 2019-01-09 | 2019-01-10 | $34.55 | $269K | +2.4% | +13.1% | +8.7% |
| ATRA | SELL | 2018-12-27 | 2018-12-28 | $33.57 | $371K | -0.4% | -0.7% | +11.4% |
| ATRA | SELL | 2018-12-12 | 2018-12-13 | $42.66 | $333K | -18.5% | -17.6% | -3.3% |
| ATRA | SELL | 2018-11-28 | 2018-11-29 | $40.39 | $315K | +5.2% | -13.9% | -10.3% |
| ATRA | SELL | 2018-11-14 | 2018-11-15 | $34.62 | $270K | +12.2% | +11.6% | +10.8% |
| ATRA | SELL | 2018-10-22 | 2018-10-23 | $33.87 | $369K | +10.1% | +10.6% | +2.7% |
| ATRA | SELL | 2018-10-04 | 2018-10-05 | $40.32 | $472K | -4.7% | -6.2% | -29.1% |
| ATRA | SELL | 2018-09-18 | 2018-09-20 | $39.81 | $310K | -2.4% | -16.3% | -6.1% |
| ATRA | SELL | 2018-09-06 | 2018-09-10 | $39.34 | $570K | +3.3% | -10.1% | +8.8% |
| ATRA | SELL | 2018-08-20 | 2018-08-22 | $36.37 | $284K | +5.0% | +5.0% | -6.4% |
| ATRA | SELL | 2018-08-06 | 2018-08-07 | $37.43 | $292K | -5.4% | +1.2% | -1.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.