Insider Stock Trading History of Clark Mitchall G.


The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Clark Mitchall G. since year 2005. The trader's CIK number is 1612094. At the time of this reporting, Clark Mitchall G. is the EVP & Chief R & QA Officer of Atara Biotherapeutics, Inc. . (stock ticker symbol ATRA). See this page for all insider trading activities at Atara Biotherapeutics, Inc. .


Stock purchases, sales, and option exercises reported by insider Clark Mitchall G. since 2005.
  Trade Date   Symbol Company Name (Issuer) Trade Type     Shares       Price ($)   Value ($)
2017-08-15 ATRA Atara Biotherapeutics, Inc. Option Ex 7,211 .00 0
2017-08-16 ATRA Atara Biotherapeutics, Inc. Sale 3,021 14.33 43,290
2017-05-15 ATRA Atara Biotherapeutics, Inc. Option Ex 7,212 .00 0
2017-05-16 ATRA Atara Biotherapeutics, Inc. Sale 3,873 15.25 59,063
2017-02-15 ATRA Atara Biotherapeutics, Inc. Option Ex 7,211 .00 0
2017-02-16 ATRA Atara Biotherapeutics, Inc. Sale 3,059 15.96 48,821
2016-11-16 ATRA Atara Biotherapeutics, Inc. Sale 2,995 19.53 58,492
2016-11-15 ATRA Atara Biotherapeutics, Inc. Option Ex 7,212 .00 0
2016-08-15 ATRA Atara Biotherapeutics, Inc. Option Ex 7,211 .00 0
2016-05-16 ATRA Atara Biotherapeutics, Inc. Option Ex 7,212 .00 0
2016-05-16 ATRA Atara Biotherapeutics, Inc. Sale 4,153 15.15 62,917
2016-02-16 ATRA Atara Biotherapeutics, Inc. Option Ex 7,211 .00 0
2016-02-16 ATRA Atara Biotherapeutics, Inc. Sale 4,153 15.35 63,748
2015-11-16 ATRA Atara Biotherapeutics, Inc. Option Ex 4,808 .00 0
2015-11-16 ATRA Atara Biotherapeutics, Inc. Sale 4,153 31.67 131,525
2015-08-17 ATRA Atara Biotherapeutics, Inc. Option Ex 11,375 12.05 137,068
2015-08-17 ATRA Atara Biotherapeutics, Inc. Sale 7,829 46.19 361,621
2015-05-15 ATRA Atara Biotherapeutics, Inc. 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. (EVP & Chief R & QA Officer of Atara Biotherapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.