| Insider Name | Buy/Sell | Company Name | Ticker | Amount | Shares Change | |||
|---|---|---|---|---|---|---|---|---|
| Feb 15, 2019 | Feb 19, 2019 | Porter Derrell SVP Head of Global Commercial | Sell | Atara Biotherapeutics, Inc. | ATRA | $40 | $236,360 | -21.41% |
| May 15, 2018 | May 17, 2018 | Porter Derrell SVP Head of Global Commercial | Sell | Atara Biotherapeutics, Inc. | ATRA | $45.02 | $735,357 | -56.65% |
| May 08, 2018 | May 09, 2018 | Porter Derrell SVP Head of Global Commercial | Sell | Atara Biotherapeutics, Inc. | ATRA | $40.15 | $61,992 | -10.99% |
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