The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) by Clark Mitchall G. since 2015.
The trader's CIK number is 1612094.
At the time of the last reporting, Clark Mitchall G. was the Chief R & QA Officer of Atara Biotherapeutics, Inc.. (stock ticker symbol ATRA).
Also see all insider trading activities at Atara Biotherapeutics, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2018 | ATRA | 0 | $0 | 153,110 | $6,293,569 | 84,773 | $1,427,651 |
| 2017 | ATRA | 0 | $0 | 13,243 | $197,892 | 28,846 | $0 |
| 2016 | ATRA | 0 | $0 | 11,301 | $185,157 | 28,846 | $0 |
| 2015 | ATRA | 0 | $0 | 11,982 | $493,146 | 47,433 | $137,068 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2018-05-18 | ATRA | Sale | 25,860 | 50.03 | 1,293,775 |
| 2018-05-16 | ATRA | Sale | 4,647 | 46.17 | 214,551 |
| 2018-05-15 | ATRA | Option Ex | 4,808 | .00 | 0 |
| 2018-03-29 | ATRA | Sale | 22,400 | 40.07 | 897,568 |
| 2018-03-27 | ATRA | Option Ex | 72,754 | 19.62 | 1,427,651 |
| 2018-03-27 | ATRA | Sale | 100,203 | 38.80 | 3,887,675 |
| 2018-02-15 | ATRA | Option Ex | 7,211 | .00 | 0 |
| 2017-11-15 | ATRA | Option Ex | 7,212 | .00 | 0 |
| 2017-11-16 | ATRA | Sale | 3,290 | 14.20 | 46,718 |
| 2017-08-15 | ATRA | Option Ex | 7,211 | .00 | 0 |
| 2017-08-16 | ATRA | Sale | 3,021 | 14.33 | 43,290 |
| 2017-05-15 | ATRA | Option Ex | 7,212 | .00 | 0 |
| 2017-05-16 | ATRA | Sale | 3,873 | 15.25 | 59,063 |
| 2017-02-15 | ATRA | Option Ex | 7,211 | .00 | 0 |
| 2017-02-16 | ATRA | Sale | 3,059 | 15.96 | 48,821 |
| 2016-11-16 | ATRA | Sale | 2,995 | 19.53 | 58,492 |
| 2016-11-15 | ATRA | Option Ex | 7,212 | .00 | 0 |
| 2016-08-15 | ATRA | Option Ex | 7,211 | .00 | 0 |
| 2016-05-16 | ATRA | Option Ex | 7,212 | .00 | 0 |
| 2016-05-16 | ATRA | Sale | 4,153 | 15.15 | 62,917 |
| 2016-02-16 | ATRA | Sale | 4,153 | 15.35 | 63,748 |
| 2016-02-16 | ATRA | Option Ex | 7,211 | .00 | 0 |
| 2015-11-16 | ATRA | Option Ex | 4,808 | .00 | 0 |
| 2015-11-16 | ATRA | Sale | 4,153 | 31.67 | 131,525 |
| 2015-08-17 | ATRA | Option Ex | 11,375 | 12.05 | 137,068 |
| 2015-08-17 | ATRA | Sale | 7,829 | 46.19 | 361,621 |
| 2015-05-15 | ATRA | Option Ex | 31,250 | .00 | 0 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Clark Mitchall G. (Chief R & QA Officer of Atara Biotherapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.