Atara Biotherapeutics Inc

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Atara Biotherapeutics Inc
CIK #0001604464
EDGAR Form CIK 2011 - 2026
10-K [0001604464]
10-Q [0001604464]
3 [0001604464]
4 [0001604464]
8-K [0001604464]
SC 13D [0001604464]
SC 13G [0001604464]
Form 13D/13G Filer Form 13D/13G Subject Filed
Adage Capital Management LP Atara Biotherapeutics Inc [2026-05-13]
Point72 Asset Management LP Atara Biotherapeutics Inc [2026-05-08]
Redmile Group LLC Atara Biotherapeutics Inc [2025-05-23]
Panacea Innovation Ltd Atara Biotherapeutics Inc [2025-05-21]
Panacea Innovation Ltd Atara Biotherapeutics Inc [2025-02-06]
Adiumentum Capital Fund I LP Atara Biotherapeutics Inc [2024-05-22]
Citadel Advisors LLC Atara Biotherapeutics Inc [2024-03-18]
EcoR1 Capital LLC Atara Biotherapeutics Inc [2023-11-21]
Wasatch Advisors Inc Atara Biotherapeutics Inc [2023-02-08]
Goldman Sachs Group Inc Atara Biotherapeutics Inc [2023-02-07]
View All
Form 3/4/5 Subject 2011 - 2026
Sarney Kevin G
Atara Biotherapeutics Inc
Cherry Brian N
Fust Matthew K
Heiden William K
Ciongoli Gregory Austin
Nguyen AnhCo
Grant-Huerta Yanina
Panacea Innovation Ltd
Huang James
View All
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Atara Biotherapeutics Inc ATRA
Warrants · derivative
2026-03-17 Option exercise 259,163 $6.61 1,713,067
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-17 Option exercise 259,163 $0.00
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-17 Tax withheld 5 $5.23 26
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-09 Grant 81,100 $0.00
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-09 Grant 20,300 $0.00
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 198 $5.08 1,006
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 24 $5.08 122
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 58 $5.08 295
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 1,603 $5.08 8,143
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 1,442 $5.09 7,340
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 1,298 $5.09 6,607
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 377 $5.08 1,915
Atara Biotherapeutics Inc ATRA
Common Stock
2026-03-02 Sell 100 $5.08 508
Atara Biotherapeutics Inc ATRA
Common Stock
2026-01-12 Sell 80,554 $6.07 488,963
Atara Biotherapeutics Inc ATRA
Common Stock
2025-11-28 Tax withheld 1 $14.03 14
Atara Biotherapeutics Inc ATRA
Warrants · derivative
2025-11-28 Option exercise 48,737 $6.61 322,152
Atara Biotherapeutics Inc ATRA
Common Stock
2025-11-28 Option exercise 48,737 $0.00
Atara Biotherapeutics Inc ATRA
Common Stock
2025-11-17 Sell 74 $13.19 976
Atara Biotherapeutics Inc ATRA
Common Stock
2025-11-17 Sell 56 $13.19 739
Atara Biotherapeutics Inc ATRA
Common Stock
2025-11-17 Sell 2,859 $13.19 37,710
showing 20 of 200 most recent transactions
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