Insider Trading activities of Atara Biotherapeutics, Inc. insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Atara Biotherapeutics, Inc. since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Atara Biotherapeutics, Inc. since year 2005. Table 2 shows the detailed insider transactions of Atara Biotherapeutics, Inc. since 2005. The reporting company's ticker symbol is ATRA. The reporting company's CIK number is 1604464.
The total value of stock buying since 2005 is $5,033,092.
The total value of stock sales since 2005 is $18,665,406.
The total value of stock option exercises since 2005 is $197,712.


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Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Atara Biotherapeutics, Inc. (ATRA).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2017-11 0 $0 17,478 $249,227 29,760 $0
2017-10 0 $0 14,800 $211,940 0 $0
2017-09 0 $0 14,800 $226,220 0 $0
2017-08 0 $0 34,273 $497,363 29,759 $0
2017-07 0 $0 11,500 $181,640 0 $0
2017-06 0 $0 7,000 $89,050 0 $0
2017-05 0 $0 41,035 $607,323 37,106 $0
2017-04 0 $0 20,400 $352,871 0 $0
2017-03 0 $0 93,300 $1,844,123 0 $0
2017-02 0 $0 77,183 $1,191,897 42,178 $0
2017-01 0 $0 20,400 $312,900 0 $0
2016-12 0 $0 18,000 $295,248 0 $0
2016-11 0 $0 48,049 $921,085 42,181 $0
2016-10 0 $0 14,600 $230,197 0 $0
2016-09 0 $0 19,200 $390,684 0 $0
2016-08 0 $0 16,302 $360,364 42,179 $0
2016-07 0 $0 19,200 $431,855 0 $0
2016-06 0 $0 21,600 $451,980 0 $0
2016-05 0 $0 24,964 $405,592 42,181 $0
2016-04 0 $0 15,400 $313,477 0 $0
2016-03 3,000 $41,565 300 $6,003 0 $0
2016-02 0 $0 20,255 $320,271 42,178 $0
2016-01 0 $0 2,400 $48,468 0 $0
2015-12 2,500 $55,000 8,800 $266,334 0 $0
2015-11 0 $0 23,723 $815,304 39,777 $0
2015-10 0 $0 7,200 $216,986 0 $0
2015-09 0 $0 10,400 $463,737 0 $0
2015-08 0 $0 71,383 $3,280,083 105,275 $197,712
2015-07 0 $0 20,500 $1,162,808 0 $0
2015-06 0 $0 34,200 $1,650,240 0 $0
2015-05 0 $0 14,000 $551,090 242,254 $0
2015-04 0 $0 5,200 $319,046 0 $0
2015-03 4,000 $118,285 0 $0 0 $0
2015-02 11,000 $198,000 0 $0 0 $0
2014-10 420,022 $4,620,242 0 $0 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Atara Biotherapeutics, Inc. insiders (ATRA)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
2017-11-17 Soffer Gad (EVP & Chief Strategy Officer) Sale 7,000 15.00 105,000
2017-11-16 Clark Mitchall G. (EVP & Chief R & QA Officer) Sale 3,290 14.20 46,718
2017-11-16 Gallagher Carol Giltner (Director) Sale 1,184 14.20 16,812
2017-11-15 Ciechanover Isaac E. (Chief Executive Officer) Option Ex 5,908 .00 0
2017-11-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 1,604 13.36 21,429
2017-11-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Option Ex 829 .00 0
2017-11-15 Clark Mitchall G. (EVP & Chief R & QA Officer) Option Ex 7,212 .00 0
2017-11-15 Soffer Gad (EVP & Chief Strategy Officer) Option Ex 4,146 .00 0
2017-11-15 Fust Matthew K (Director) Option Ex 1,602 .00 0
2017-11-15 Gallagher Carol Giltner (Director) Option Ex 2,366 .00 0
2017-11-15 Mcgrath John (EVP & Chief Financial Officer) Option Ex 7,697 .00 0
2017-11-14 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 13.41 29,502
2017-11-13 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 13.53 29,766
2017-10-27 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 13.60 29,920
2017-10-26 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 13.57 29,854
2017-10-16 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 14.35 86,100
2017-10-12 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 14.78 32,516
2017-10-11 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 15.25 33,550
2017-09-20 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 15.56 34,232
2017-09-19 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 15.51 34,122
2017-09-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 15.30 91,800
2017-09-07 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 14.98 32,956
2017-09-06 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 15.05 33,110
2017-08-23 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 13.51 29,722
2017-08-22 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 13.56 29,832
2017-08-16 Clark Mitchall G. (EVP & Chief R & QA Officer) Sale 3,021 14.33 43,290
2017-08-16 Soffer Gad (EVP & Chief Strategy Officer) Sale 2,464 14.53 35,801
2017-08-16 Gallagher Carol Giltner (Director) Sale 1,184 14.30 16,931
2017-08-16 Mcgrath John (EVP & Chief Financial Officer) Sale 2,100 14.39 30,219
2017-08-15 Ciechanover Isaac E. (Chief Executive Officer) Option Ex 5,908 .00 0
2017-08-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 7,604 14.75 112,159
2017-08-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Option Ex 829 .00 0
2017-08-15 Clark Mitchall G. (EVP & Chief R & QA Officer) Option Ex 7,211 .00 0
2017-08-15 Soffer Gad (EVP & Chief Strategy Officer) Sale 7,000 15.00 105,000
2017-08-15 Soffer Gad (EVP & Chief Strategy Officer) Option Ex 4,145 .00 0
2017-08-15 Fust Matthew K (Director) Option Ex 1,603 .00 0
2017-08-15 Gallagher Carol Giltner (Director) Option Ex 2,366 .00 0
2017-08-15 Mcgrath John (EVP & Chief Financial Officer) Sale 2,100 14.23 29,883
2017-08-15 Mcgrath John (EVP & Chief Financial Officer) Option Ex 7,697 .00 0
2017-08-11 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 14.58 32,076
2017-08-10 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,200 14.75 32,450
2017-07-25 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,700 16.38 44,226
2017-07-24 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,800 17.11 47,894
2017-07-17 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 14.92 89,520
2017-06-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 12.65 75,900
2017-06-09 Gallagher Carol Giltner (Director) Sale 1,000 13.15 13,150
2017-05-31 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,450 13.26 45,747
2017-05-30 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,450 13.44 46,368
2017-05-18 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 14.94 35,856
2017-05-17 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 14.88 35,712
2017-05-16 Clark Mitchall G. (EVP & Chief R & QA Officer) Sale 3,873 15.25 59,063
2017-05-16 Soffer Gad (EVP & Chief Strategy Officer) Sale 5,674 15.19 86,188
2017-05-16 Gallagher Carol Giltner (Director) Sale 1,184 15.25 18,056
2017-05-16 Mcgrath John (EVP & Chief Financial Officer) Sale 2,000 15.27 30,540
2017-05-15 Ciechanover Isaac E. (Chief Executive Officer) Option Ex 5,908 .00 0
2017-05-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 7,604 14.99 113,983
2017-05-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Option Ex 829 .00 0
2017-05-15 Clark Mitchall G. (EVP & Chief R & QA Officer) Option Ex 7,212 .00 0
2017-05-15 Soffer Gad (EVP & Chief Strategy Officer) Sale 7,000 15.13 105,910
2017-05-15 Soffer Gad (EVP & Chief Strategy Officer) Option Ex 10,556 .00 0
2017-05-15 Fust Matthew K (Director) Option Ex 1,602 .00 0
2017-05-15 Gallagher Carol Giltner (Director) Option Ex 2,366 .00 0
2017-05-15 Mcgrath John (EVP & Chief Financial Officer) Sale 2,000 14.95 29,900
2017-05-15 Mcgrath John (EVP & Chief Financial Officer) Option Ex 8,633 .00 0
2017-04-26 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 17.78 64,008
2017-04-25 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 17.39 62,586
2017-04-17 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 17.28 103,680
2017-04-11 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,200 16.99 71,358
2017-04-10 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,000 17.08 51,239
2017-03-28 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 19.43 69,930
2017-03-27 Ciechanover Isaac E. (Chief Executive Officer) Sale 12,400 20.34 252,216
2017-03-23 Mcgrath John (EVP & Chief Financial Officer) Sale 6,500 21.08 137,020
2017-03-22 Mcgrath John (EVP & Chief Financial Officer) Sale 7,500 20.27 152,025
2017-03-17 Ciechanover Isaac E. (Chief Executive Officer) Sale 20,000 19.25 385,100
2017-03-16 Ciechanover Isaac E. (Chief Executive Officer) Sale 10,800 18.54 200,232
2017-03-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 19.60 117,600
2017-03-10 Soffer Gad (EVP & Chief Strategy Officer) Sale 2,500 20.00 50,000
2017-03-10 Mcgrath John (EVP & Chief Financial Officer) Sale 24,000 20.00 480,000
2017-02-21 Mcgrath John (EVP & Chief Financial Officer) Sale 9,000 15.14 136,260
2017-02-16 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 15.57 37,368
2017-02-16 Clark Mitchall G. (EVP & Chief R & QA Officer) Sale 3,059 15.96 48,821
2017-02-16 Soffer Gad (EVP & Chief Strategy Officer) Sale 7,273 15.62 113,604
2017-02-16 Gallagher Carol Giltner (Director) Sale 1,183 16.10 19,046
2017-02-15 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 15.54 37,296
2017-02-15 Ciechanover Isaac E. (Chief Executive Officer) Option Ex 5,907 .00 0
2017-02-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 7,604 15.49 117,785
2017-02-15 Haqq Christopher (EVP, R&D & Chief Scientific Of) Option Ex 829 .00 0
2017-02-15 Clark Mitchall G. (EVP & Chief R & QA Officer) Option Ex 7,211 .00 0
2017-02-15 Soffer Gad (EVP & Chief Strategy Officer) Option Ex 13,762 .00 0
2017-02-15 Fust Matthew K (Director) Option Ex 1,603 .00 0
2017-02-15 Gallagher Carol Giltner (Director) Option Ex 2,365 .00 0
2017-02-15 Mcgrath John (EVP & Chief Financial Officer) Option Ex 10,501 .00 0
2017-02-14 Soffer Gad (EVP & Chief Strategy Officer) Sale 7,000 15.22 106,540
2017-02-10 Soffer Gad (EVP & Chief Strategy Officer) Sale 6,274 15.78 98,972
2017-02-09 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 13,975 15.46 216,053
2017-02-09 Turner Heather D (EVP, General Counsel & Sec.) Sale 12,215 15.93 194,584
2017-02-03 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 13.87 33,288
2017-02-02 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 13.45 32,280
2017-01-18 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 14.47 34,728
2017-01-17 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 14.08 50,688
2017-01-17 Haqq Christopher (EVP, R&D & Chief Scientific Of) Sale 6,000 14.27 85,620
2017-01-06 Ciechanover Isaac E. (Chief Executive Officer) Sale 6,000 17.10 102,600
2017-01-05 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 16.36 39,264
2016-12-23 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 15.25 36,600
2016-12-22 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 15.49 37,188
2016-12-15 Haqq Christopher (Chief Medical Officer) Sale 6,000 15.40 92,400
2016-12-07 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 17.30 62,280
2016-12-06 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 18.55 66,780
2016-11-23 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 18.81 67,716
2016-11-22 Ciechanover Isaac E. (Chief Executive Officer) Sale 8,400 18.21 152,964
2016-11-21 Haqq Christopher (Chief Medical Officer) Sale 7,068 17.85 126,163
2016-11-17 Soffer Gad (Chief Operating Officer) Sale 1,480 18.41 27,246
2016-11-16 Clark Mitchall G. (Chief R & QA Officer) Sale 2,995 19.53 58,492
2016-11-16 Soffer Gad (Chief Operating Officer) Sale 7,136 19.27 137,510
2016-11-16 Gallagher Carol Giltner (Director) Sale 1,184 19.35 22,910
2016-11-15 Ciechanover Isaac E. (Chief Executive Officer) Option Ex 5,908 .00 0
2016-11-15 Haqq Christopher (Chief Medical Officer) Sale 1,604 19.95 31,999
2016-11-15 Haqq Christopher (Chief Medical Officer) Option Ex 829 .00 0
2016-11-15 Clark Mitchall G. (Chief R & QA Officer) Option Ex 7,212 .00 0
2016-11-15 Soffer Gad (Chief Operating Officer) Option Ex 13,761 .00 0
2016-11-15 Fust Matthew K (Director) Option Ex 1,602 .00 0
2016-11-15 Gallagher Carol Giltner (Director) Option Ex 2,366 .00 0
2016-11-15 Mcgrath John (Chief Financial Officer) Option Ex 10,503 .00 0
2016-11-14 Soffer Gad (Chief Operating Officer) Sale 9,582 20.55 196,910
2016-11-11 Mcgrath John (Chief Financial Officer) Sale 2,500 19.37 48,425
2016-11-10 Mcgrath John (Chief Financial Officer) Sale 2,500 20.30 50,750
2016-10-27 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 13.70 32,880
2016-10-26 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 13.91 33,384
2016-10-14 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 16.01 38,424
2016-10-13 Ciechanover Isaac E. (Chief Executive Officer) Sale 2,400 15.91 38,184
2016-10-12 Mcgrath John (Chief Financial Officer) Sale 2,500 16.41 41,025
2016-10-11 Mcgrath John (Chief Financial Officer) Sale 2,500 18.52 46,300
2016-09-28 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,800 21.61 103,728
2016-09-27 Ciechanover Isaac E. (Chief Executive Officer) Sale 7,200 20.50 147,600
2016-09-16 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 19.32 69,552
2016-09-15 Ciechanover Isaac E. (Chief Executive Officer) Sale 3,600 19.39 69,804
2016-08-23 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,800 22.08 105,983
2016-08-22 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,800 22.58 108,383
2016-08-16 Soffer Gad (Chief Operating Officer) Sale 5,356 21.70 116,198
2016-08-15 Ciechanover Isaac E. (Chief Executive Officer) Option Ex 5,908 .00 0
2016-08-15 Haqq Christopher (Chief Medical Officer) Sale 1,346 22.14 29,800
2016-08-15 Haqq Christopher (Chief Medical Officer) Option Ex 829 .00 0
2016-08-15 Clark Mitchall G. (Chief R & QA Officer) Option Ex 7,211 .00 0
2016-08-15 Soffer Gad (Chief Operating Officer) Option Ex 13,761 .00 0
2016-08-15 Fust Matthew K (Director) Option Ex 1,603 .00 0
2016-08-15 Gallagher Carol Giltner (Director) Option Ex 2,366 .00 0
2016-08-15 Mcgrath John (Chief Financial Officer) Option Ex 10,501 .00 0
2016-07-21 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,800 22.22 106,656
2016-07-20 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,800 21.99 105,551
2016-07-08 Ciechanover Isaac E. (Chief Executive Officer) Sale 4,800 22.96 110,208
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Insider trading activities including stock purchases, stock sales, and option exercises of ATRA listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Atara Biotherapeutics, Inc. (symbol ATRA, CIK number 1604464) see the Securities and Exchange Commission (SEC) website.