Companies / Atara Biotherapeutics, Inc.

Atara Biotherapeutics, Inc.

Nasdaq: ATRACIK 1604464THOUSAND OAKS, CAatarabio.com ↗

Financials · FY2025

Revenue$120.77M
Net income$32.69M
Total debt—
Cash$3.22M
Diluted EPS$2.57
Shares outstanding10.0M

Ownership

10.0M shares outstanding · as of Aug 10, 2026
3.2%Insiders
Ownership
Insiders3.21%321,824
10%+ / strategic3.07%307,894
Institutions28.11%2,821,962
Public float65.61%6,586,030

% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.

Insiders 7

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Insider% of sharesShares
Panacea Innovation Limited10% owner
3.07%307,894
Nguyen AnhCoCEOPresident and CEO · Director
1.43%143,078
Cherry Brian NDirector
0.62%62,320
Grant-Huerta YaninaChief Accounting Officer
0.52%52,050
Heiden William KDirector
0.34%34,188
Fust Matthew KDirector
0.30%30,188
Huang JamesDirector · 10% owner
——

Institutional holders 44

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HolderValue% of shares
EcoR1 Capital, LLC$10.37M5.71%
Redmile Group, LLC$7.99M4.40%
Vanguard Group Inc$4.09M2.25%
Adage Capital Partners Gp, L.L.C.$3.31M6.97%
Marshall Wace, LLP$2.69M1.48%
Globeflex Capital L P$1.40M0.77%
Mackenzie Financial Corp$1.05M0.58%
BlackRock, Inc.$969.5K0.84%
Renaissance Technologies LLC$543.4K0.30%
Quadrature Capital Ltd$367.6K0.20%

Activity

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InsidersInstitutions
What insiders are doing in this stock (Form 4).
DateActorActionSecurityValueShares ΔPosition afterImpact
Jan 12, 2026Panacea Innovation Limited
10% owner
SellCommon Stock$489.0K-81K
-5.73%
1,324,446
13.19% of shares
medium
Mar 2, 2026Grant-Huerta Yanina
Executive
SellCommon Stock$8.1K-2K
-4.74%
32,227
0.32% of shares
low
Mar 2, 2026Nguyen AnhCo
CEO
SellCommon Stock$7.3K-1K
-2.27%
61,978
0.62% of shares
low
Mar 2, 2026Nguyen AnhCo
CEO
SellCommon Stock$6.6K-1K
-2.01%
63,420
0.63% of shares
low
Mar 2, 2026Grant-Huerta Yanina
Executive
SellCommon Stock$1.9K-377
-1.17%
31,850
0.32% of shares
low
Mar 2, 2026Nguyen AnhCo
CEO
SellCommon Stock$1.0K-198
-0.30%
64,776
0.65% of shares
low
Mar 2, 2026Grant-Huerta Yanina
Executive
SellCommon Stock$508-100
-0.31%
31,750
0.32% of shares
low
Mar 2, 2026Nguyen AnhCo
CEO
SellCommon Stock$295-58
-0.09%
64,718
0.64% of shares
low

Securities

via CUSIP / OpenFIGI
SymbolTypeMarketCUSIPFIGI
ATRACommon StockEquity046513206BBG005Q3MQY4