Latest Insider Transactions at Atara Biotherapeutics, Inc. (ATRA)
This section provides a real-time view of insider transactions for Atara Biotherapeutics, Inc. (ATRA). The data is sourced from Form 4 filings with the SEC, which are filed by insiders of Atara Biotherapeutics, Inc. to disclose their transactions in the company's securities. By reviewing this information, investors can gain insights into the trading activity of Atara Biotherapeutics, Inc.'s insiders and make more informed investment decisions.
Insider Transaction List
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Jul 17
2025
|
Panacea Innovation LTD |
BUY
Open market or private purchase
|
Indirect |
19,335
+1.41%
|
$174,015
$9.64 P/Share
|
|
Jun 10
2025
|
William K Heiden |
BUY
Grant, award, or other acquisition
|
Direct |
7,828
+26.08%
|
-
|
|
Jun 10
2025
|
Ameet Mallik |
BUY
Grant, award, or other acquisition
|
Direct |
7,828
+31.62%
|
-
|
|
Jun 10
2025
|
Maria Grazia Roncarolo |
BUY
Grant, award, or other acquisition
|
Direct |
7,828
+31.07%
|
-
|
|
Jun 10
2025
|
Pascal Touchon |
BUY
Grant, award, or other acquisition
|
Direct |
7,828
+9.13%
|
-
|
|
Jun 10
2025
|
Matthew K Fust |
BUY
Grant, award, or other acquisition
|
Direct |
7,828
+30.09%
|
-
|
|
Jun 10
2025
|
Carol Giltner Gallagher |
BUY
Grant, award, or other acquisition
|
Direct |
7,828
+19.17%
|
-
|
|
May 16
2025
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
3,276
-4.42%
|
$19,656
$6.76 P/Share
|
|
May 16
2025
|
Yanina Grant Huerta Chief Accounting Officer |
SELL
Open market or private sale
|
Direct |
2,218
-5.65%
|
$13,308
$6.76 P/Share
|
|
May 16
2025
|
Adiumentum Capital Fund I LP Director |
BUY
Grant, award, or other acquisition
|
Direct |
75,572
+5.88%
|
$453,432
$6.61 P/Share
|
|
Mar 03
2025
|
Jill Henrich EVP, Chief Regulatory Officer |
SELL
Open market or private sale
|
Direct |
1,059
-5.37%
|
$7,413
$7.0 P/Share
|
|
Mar 03
2025
|
Eric J Hyllengren |
SELL
Open market or private sale
|
Direct |
1,211
-2.11%
|
$8,477
$7.0 P/Share
|
|
Mar 03
2025
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
3,331
-4.3%
|
$23,317
$7.0 P/Share
|
|
Jan 27
2025
|
Eric J Hyllengren |
BUY
Grant, award, or other acquisition
|
Direct |
34,050
+37.22%
|
-
|
|
Nov 18
2024
|
Eric J Hyllengren |
SELL
Open market or private sale
|
Direct |
1,364
-5.51%
|
$15,004
$11.2 P/Share
|
|
Nov 18
2024
|
Jill Henrich EVP, Chief Regulatory Officer |
SELL
Open market or private sale
|
Direct |
1,000
-4.91%
|
$11,000
$11.2 P/Share
|
|
Nov 18
2024
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
1,664
-2.1%
|
$18,304
$11.2 P/Share
|
|
Sep 09
2024
|
Anh Co Nguyen President and CEO |
BUY
Grant, award, or other acquisition
|
Direct |
45,000
+36.26%
|
-
|
|
Aug 16
2024
|
Jill Henrich EVP, Chief Regulatory Officer |
SELL
Open market or private sale
|
Direct |
963
-2.27%
|
$5,778
$6.63 P/Share
|
|
Aug 16
2024
|
Eric J Hyllengren |
SELL
Open market or private sale
|
Direct |
1,070
-2.07%
|
$6,420
$6.63 P/Share
|
|
Aug 16
2024
|
Amar Murugan EVP, Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
1,158
-1.39%
|
$6,948
$6.63 P/Share
|
|
Aug 16
2024
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
1,821
-1.7%
|
$10,926
$6.63 P/Share
|
|
Aug 16
2024
|
Pascal Touchon |
SELL
Open market or private sale
|
Direct |
3,038
-2.08%
|
$18,228
$6.63 P/Share
|
|
May 16
2024
|
Pascal Touchon |
SELL
Open market or private sale
|
Direct |
81,506
-4.27%
|
$0
$0.62 P/Share
|
|
May 16
2024
|
Jill Henrich EVP, Chief Regulatory Officer |
SELL
Open market or private sale
|
Direct |
25,750
-4.64%
|
$0
$0.62 P/Share
|
|
May 16
2024
|
Eric J Hyllengren |
SELL
Open market or private sale
|
Direct |
28,648
-4.25%
|
$0
$0.62 P/Share
|
|
May 16
2024
|
Amar Murugan EVP, Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
32,401
-4.45%
|
$0
$0.62 P/Share
|
|
May 16
2024
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
42,899
-4.56%
|
$0
$0.62 P/Share
|
|
Mar 31
2024
|
Ameet Mallik |
BUY
Grant, award, or other acquisition
|
Direct |
150,000
+39.74%
|
-
|
|
Mar 31
2024
|
Carol Giltner Gallagher |
BUY
Grant, award, or other acquisition
|
Direct |
150,000
+19.24%
|
-
|
|
Mar 31
2024
|
Maria Grazia Roncarolo |
BUY
Grant, award, or other acquisition
|
Direct |
150,000
+38.61%
|
-
|
|
Mar 31
2024
|
William K Heiden |
BUY
Grant, award, or other acquisition
|
Direct |
150,000
+29.47%
|
-
|
|
Mar 31
2024
|
Matthew K Fust |
BUY
Grant, award, or other acquisition
|
Direct |
150,000
+36.67%
|
-
|
|
Mar 04
2024
|
Amar Murugan EVP, Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
10,044
-1.36%
|
$0
$0.72 P/Share
|
|
Mar 04
2024
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
10,746
-1.13%
|
$0
$0.72 P/Share
|
|
Mar 04
2024
|
Pascal Touchon |
SELL
Open market or private sale
|
Direct |
24,844
-1.28%
|
$0
$0.72 P/Share
|
|
Mar 04
2024
|
Jill Henrich EVP, Chief Regulatory Officer |
SELL
Open market or private sale
|
Direct |
3,879
-0.69%
|
$0
$0.72 P/Share
|
|
Mar 04
2024
|
Eric J Hyllengren |
SELL
Open market or private sale
|
Direct |
6,679
-0.49%
|
$0
$0.72 P/Share
|
|
Jan 08
2024
|
Jill Henrich EVP, Chief Regulatory Officer |
BUY
Grant, award, or other acquisition
|
Direct |
450,000
+44.6%
|
-
|
|
Jan 08
2024
|
Eric J Hyllengren |
BUY
Grant, award, or other acquisition
|
Direct |
475,000
+41.09%
|
-
|
|
Jan 08
2024
|
Amar Murugan EVP, Chief Legal Officer |
BUY
Grant, award, or other acquisition
|
Direct |
475,000
+39.17%
|
-
|
|
Jan 08
2024
|
Anh Co Nguyen President and CEO |
BUY
Grant, award, or other acquisition
|
Direct |
675,000
+41.48%
|
-
|
|
Jan 08
2024
|
Pascal Touchon |
BUY
Grant, award, or other acquisition
|
Direct |
1,280,000
+39.81%
|
-
|
|
Nov 16
2023
|
Manher Joshi EVP, Chief Medical Officer |
SELL
Open market or private sale
|
Direct |
12,287
-6.69%
|
$0
$0.39 P/Share
|
|
Nov 16
2023
|
Amar Murugan EVP, Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
8,307
-3.13%
|
$0
$0.39 P/Share
|
|
Nov 16
2023
|
Anh Co Nguyen President and CEO |
SELL
Open market or private sale
|
Direct |
8,856
-3.1%
|
$0
$0.39 P/Share
|
|
Nov 16
2023
|
Pascal Touchon |
SELL
Open market or private sale
|
Direct |
20,409
-3.02%
|
$0
$0.39 P/Share
|
|
Nov 16
2023
|
Jill Henrich EVP, Chief Regulatory Officer |
SELL
Open market or private sale
|
Direct |
3,267
-3.03%
|
$0
$0.39 P/Share
|
|
Nov 16
2023
|
Eric J Hyllengren |
SELL
Open market or private sale
|
Direct |
11,958
-5.49%
|
$0
$0.39 P/Share
|
|
Nov 14
2023
|
Carol Giltner Gallagher |
BUY
Open market or private purchase
|
Direct |
90,980
+16.53%
|
$0
$0.31 P/Share
|