Atara Biotherapeutics Inc

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Atara Biotherapeutics Inc
TickerATRA
CIK #0001604464
CUSIP046513206
SectorLife Sciences - Biological Products, (No Disgnostic Substances)
Address3260 Bayshore Boulevard, Brisbane, CA 94005
Source [EDGAR]
CIK Filing 2011 - 2026
[0001604464] 10-K
[0001604464] 10-Q
[0001604464] 3
[0001604464] 4
[0001604464] 8-K
[0001604464] SC 13D
[0001604464] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Adage Capital Management LP Atara Biotherapeutics Inc [2026-05-13] 0.0
Point72 Asset Management LP Atara Biotherapeutics Inc [2026-05-08] 0.0
Redmile Group LLC Atara Biotherapeutics Inc [2025-05-23] 0.0
Panacea Innovation Ltd Atara Biotherapeutics Inc [2025-05-21] 0.0
Panacea Innovation Ltd Atara Biotherapeutics Inc [2025-02-06] 0.0
Adiumentum Capital Fund I LP Atara Biotherapeutics Inc [2024-05-22] 6.7
Citadel Advisors LLC Atara Biotherapeutics Inc [2024-03-18] 6.4
EcoR1 Capital LLC Atara Biotherapeutics Inc [2023-11-21] 0.9
Wasatch Advisors Inc Atara Biotherapeutics Inc [2023-02-08] 8.8
Goldman Sachs Group Inc Atara Biotherapeutics Inc [2023-02-07] 6.4
State Street Corp Atara Biotherapeutics Inc [2023-02-03] 8.06
FMR LLC Atara Biotherapeutics Inc [2022-02-09] 0.0
Point72 Asset Management LP Atara Biotherapeutics Inc [2021-12-21] 5.1
JPMorgan Chase & Co Atara Biotherapeutics Inc [2021-01-08] 7.3
Maverick Capital Ltd Atara Biotherapeutics Inc [2020-02-14] 9.2
Bridger Management LLC Atara Biotherapeutics Inc [2019-11-01] 5.5
Camber Capital Management LP Atara Biotherapeutics Inc [2019-07-29] 2013.0
Vanguard Group Inc Atara Biotherapeutics Inc [2019-02-11] 6.16
Camber Capital Management LLC Atara Biotherapeutics Inc [2018-01-05] 2013.0
Morgan Stanley Atara Biotherapeutics Inc [2017-12-07] 5.0
Bridger Management LLC Atara Biotherapeutics Inc [2017-04-21] 5.2
Arrowpoint Asset Management LLC Atara Biotherapeutics Inc [2017-02-13] 5.4
BlackRock Inc Atara Biotherapeutics Inc [2017-01-30] 6.0
Redmile Group LLC Atara Biotherapeutics Inc [2016-02-16] 5.36
FMR LLC Atara Biotherapeutics Inc [2016-02-12] 0.0
Amgen Inc Atara Biotherapeutics Inc [2015-04-01] 9.0
HELU Carlos Slim Atara Biotherapeutics Inc [2015-02-17] 6.6
DAG Ventures V-QP LP Atara Biotherapeutics Inc [2015-02-17] 9.4
Kleiner Perkins Caufield & Byers XV LLC Atara Biotherapeutics Inc [2015-02-17] 12.9
Ciechanover Isaac E Atara Biotherapeutics Inc [2015-02-13] 5.3
Celgene Corp /DE/ Atara Biotherapeutics Inc [2015-02-13] 9.0
FMR LLC Atara Biotherapeutics Inc [2015-02-13] 0.0
Domain Partners VIII LP Atara Biotherapeutics Inc [2015-02-05] 10.6
Baupost Group LLC/MA Atara Biotherapeutics Inc [2014-11-10] 12.86
Form 3/4/5 Filer 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
EcoR1 Capital LLC
Mallik Ameet
Touchon Pascal
Roncarolo Maria Grazia
Gallagher Carol Giltner
Subramanian Nachiappan
Redmile Group LLC
Green Jeremy
Adiumentum Capital Fund I LP
Adiumentum Capital Fund I GP LLC
Hyllengren Eric J
Henrich Jill
Murugan Amar
Joshi Manher
Dobmeier Eric
Seidenberg Beth C
Banard Charlene A
Koppikar Utpal
Dupont Jakob
Baynes Roy D
Renaud Ronald C JR
Yarema Kristin
Newell Joe
Ciechanover Isaac E
Berger Dietmar
Kim Mina
Porter Derrell
Marcus Joel S
Haqq Christopher
Soffer Gad
Clark Mitchall G
McGrath John
Turner Heather D
KPCB XV Founders Fund LLC
KPCB XV Associates LLC
Kleiner Perkins Caufield & Byers XV LLC
Weber Eckard
DAG Ventures Management V LLC
DAG Ventures V LP
Williams Greg
Cadeddu John J
Pianim Nicholas K
DAG Ventures V-QP LP
Chung Young J
Goodrich R Thomas
DP VIII Associates LP
Vitullo Nicole
Treu Jesse I
Schoemaker Kathleen K
Blair James C
Dovey Brian H
Halak Brian K
Domain Partners VIII LP
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Panacea Innovation Ltd +1
Warrants · derivative
2026-03-17 Option exercise 259,163 $6.61 1,713,067
Panacea Innovation Ltd +1
Common Stock
2026-03-17 Option exercise 259,163 $0.00
Panacea Innovation Ltd +1
Common Stock
2026-03-17 Tax withheld 5 $5.23 26
Grant-Huerta Yanina
Common Stock
2026-03-09 Grant 20,300 $0.00
Nguyen AnhCo
Common Stock
2026-03-09 Grant 81,100 $0.00
Nguyen AnhCo
Common Stock
2026-03-02 Sell 1,298 $5.09 6,607
Nguyen AnhCo
Common Stock
2026-03-02 Sell 198 $5.08 1,006
Nguyen AnhCo
Common Stock
2026-03-02 Sell 1,442 $5.09 7,340
Grant-Huerta Yanina
Common Stock
2026-03-02 Sell 1,603 $5.08 8,143
Grant-Huerta Yanina
Common Stock
2026-03-02 Sell 377 $5.08 1,915
Nguyen AnhCo
Common Stock
2026-03-02 Sell 58 $5.08 295
Grant-Huerta Yanina
Common Stock
2026-03-02 Sell 100 $5.08 508
Grant-Huerta Yanina
Common Stock
2026-03-02 Sell 24 $5.08 122
Panacea Innovation Ltd +1
Common Stock
2026-01-12 Sell 80,554 $6.07 488,963
Panacea Innovation Ltd +1
Common Stock
2025-11-28 Option exercise 48,737 $0.00
Panacea Innovation Ltd +1
Common Stock
2025-11-28 Tax withheld 1 $14.03 14
Panacea Innovation Ltd +1
Warrants · derivative
2025-11-28 Option exercise 48,737 $6.61 322,152
Grant-Huerta Yanina
Common Stock
2025-11-17 Sell 74 $13.19 976
Grant-Huerta Yanina
Common Stock
2025-11-17 Sell 85 $13.19 1,121
Nguyen AnhCo
Common Stock
2025-11-17 Sell 2,859 $13.19 37,710
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 34 2,564,458
2025-12-31 42 2,049,879
2025-09-30 38 1,883,567
2025-06-30 33 1,805,400
2025-03-31 38 2,086,794
2024-12-31 44 2,390,349
2024-09-30 36 2,415,922
2024-06-30 49 2,838,448
2024-03-31 83 87,396,818
2023-12-31 92 68,727,721
2023-09-30 110 89,202,902
2023-06-30 119 91,300,153
Form 13F Holdings
Firm Period DFND Voting Shares
Kerr Financial Planning Corp [2026-06-30] SOLE 24 24
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