Insider Trading History of Dupont Jakob

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) of Dupont Jakob since 1. This trader's CIK number is 1553335. At the time of last reporting, Dupont Jakob was the EVP, Head of R&D of Atara Biotherapeutics, Inc.. (stock ticker symbol ATRA). Also see all insider trading activities at Atara Biotherapeutics, Inc..

Note that in the past Dupont Jakob also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Gossamer Bio, Inc. (GOSS) by Dupont Jakob

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2019 GOSS 0 $0 41,994 $631,535 41,994 $449,755
2019 GOSS 0 $0 41,994 $631,535 41,994 $449,755

Yearly summary of insider trading at Oncomed Pharmaceuticals Inc (OMED) by Dupont Jakob

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2016 OMED 0 $0 4,662 $97,410 2,500 $11,399
2015 OMED 0 $0 31,000 $691,704 31,000 $141,350
2014 OMED 0 $0 3,000 $69,003 3,000 $13,678

Yearly summary of insider trading at Atara Biotherapeutics, Inc. (ATRA) by Dupont Jakob

Insider Buying Insider Sales Option Exercises
Year Symbol Shares Value Shares Value Shares Value
2023 ATRA 0 $0 5,074 $18,403 0 $0
2022 ATRA 0 $0 19,560 $162,795 5,000 $47,900
2021 ATRA 0 $0 14,351 $236,348 10,000 $95,800


Insider trading activities at 3 companies by Dupont Jakob:

1. Gossamer Bio, Inc. (GOSS)

2. Oncomed Pharmaceuticals Inc (OMED)

3. Atara Biotherapeutics, Inc. (ATRA)

Table 1. Insider trading of Gossamer Bio, Inc. (GOSS) by Dupont Jakob

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2019-12-27 GOSS Option Ex 1,994 10.71 21,355
2019-12-27 GOSS Sale 1,994 15.81 31,535
2019-12-30 GOSS Sale 40,000 15.00 600,000
2019-12-30 GOSS Option Ex 40,000 10.71 428,400
2019-12-30 GOSS Sale 40,000 15.00 600,000
2019-12-27 GOSS Sale 1,994 15.81 31,535
2019-12-30 GOSS Option Ex 40,000 10.71 428,400
2019-12-27 GOSS Option Ex 1,994 10.71 21,355

Table 2. Insider trading of Oncomed Pharmaceuticals Inc (OMED) by Dupont Jakob

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2016-01-11 OMED Option Ex 2,500 4.56 11,399
2016-01-11 OMED Sale 2,500 20.01 50,020
2016-01-06 OMED Sale 2,161 21.92 47,369
2016-01-07 OMED Sale 1 21.33 21
2015-12-10 OMED Sale 2,500 20.49 51,232
2015-12-10 OMED Option Ex 2,500 4.56 11,399
2015-11-10 OMED Option Ex 2,500 4.56 11,399
2015-11-10 OMED Sale 2,500 21.17 52,922
2015-10-26 OMED Option Ex 5,000 4.56 22,799
2015-10-26 OMED Sale 5,000 20.00 100,000
2015-08-10 OMED Sale 2,500 22.25 55,622
2015-08-10 OMED Option Ex 2,500 4.56 11,399
2015-07-10 OMED Option Ex 2,500 4.56 11,399
2015-07-10 OMED Sale 2,500 20.13 50,325
2015-07-06 OMED Option Ex 2,500 4.56 11,399
2015-07-06 OMED Sale 2,500 21.22 53,050
2015-04-10 OMED Sale 1,500 26.51 39,765
2015-04-10 OMED Option Ex 1,500 4.56 6,839
2015-03-10 OMED Sale 1,500 27.17 40,753
2015-03-10 OMED Option Ex 1,500 4.56 6,839
2015-02-10 OMED Option Ex 1,500 4.56 6,839
2015-02-10 OMED Sale 1,500 24.23 36,351
2015-01-12 OMED Option Ex 1,500 4.56 6,839
2015-01-12 OMED Sale 1,500 26.12 39,184
2015-01-05 OMED Sale 7,500 23.00 172,500
2015-01-05 OMED Option Ex 7,500 4.56 34,200
2014-07-23 OMED Sale 1,500 23.00 34,500
2014-07-23 OMED Option Ex 1,500 4.56 6,839
2014-06-26 OMED Sale 1,500 23.00 34,503
2014-06-26 OMED Option Ex 1,500 4.56 6,839

Table 3. Insider trading of Atara Biotherapeutics, Inc. (ATRA) by Dupont Jakob

Trade Date Symbol Trade Type Shares Price ($) Value ($)
2023-03-02 ATRA Sale 5,074 3.63 18,403
2022-11-16 ATRA Sale 4,342 4.49 19,499
2022-08-16 ATRA Sale 4,124 5.03 20,760
2022-05-17 ATRA Sale 3,873 5.32 20,596
2022-03-01 ATRA Sale 2,221 9.86 21,890
2022-01-03 ATRA Sale 5,000 16.01 80,050
2022-01-03 ATRA Option Ex 5,000 9.58 47,900
2021-12-01 ATRA Option Ex 5,000 9.58 47,900
2021-12-01 ATRA Sale 5,000 17.94 89,690
2021-11-16 ATRA Sale 2,199 17.12 37,640
2021-11-02 ATRA Sale 5,000 16.41 82,050
2021-11-02 ATRA Option Ex 5,000 9.58 47,900
2021-08-17 ATRA Sale 2,152 12.53 26,968

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 Dupont Jakob (EVP, Head of R&D of Atara Biotherapeutics, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.



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