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NASDAQ: ATRA
Atara Biotherapeutics Inc Stock Ownership - Who owns Atara Biotherapeutics?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Atara Biotherapeutics Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Panacea Innovation Ltd10% Owner2026-03-175$5.23
$26.15Sell
Yanina GranthuertaChief Accounting Officer2026-03-02377$5.08
$1.92kSell
Yanina GranthuertaChief Accounting Officer2026-03-021,603$5.08
$8.14kSell
Yanina GranthuertaChief Accounting Officer2026-03-02100$5.08
$508.30Sell
Anhco NguyenPresident and CEO2026-03-021,298$5.09
$6.60kSell
Anhco NguyenPresident and CEO2026-03-021,442$5.09
$7.34kSell
Anhco NguyenPresident and CEO2026-03-02198$5.08
$1.01kSell
Anhco NguyenPresident and CEO2026-03-0258$5.08
$294.64Sell
Yanina GranthuertaChief Accounting Officer2026-03-0224$5.08
$121.85Sell
Panacea Innovation Ltd10% Owner2026-01-1280,554$6.07
$489.04kSell

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Net Insider Buy/Sell (L12M) Ownership

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ATRA Shareholders

What type of owners hold Atara Biotherapeutics Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Panacea Innovation Ltd32.47%2,655,111$13.25MInsider
Domain Partners VIII LP26.19%2,141,542$10.69MInsider
Adiumentum Capital Fund I LP14.79%1,209,395$6.03MInsider
Joel S. Marcus11.00%899,855$4.49MInsider
Isaac E. Ciechanover7.62%622,930$3.11MInsider
Ecor1 Capital LLC7.01%573,183$2.86MInstitution
Eric Dobmeier6.89%563,325$2.81MInsider
Redmile Group LLC5.40%441,701$2.20MInsider
Redmile Group LLC5.40%441,701$2.20MInstitution
Jakob Dupont3.56%290,794$1.45MInsider

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ATRA vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ATRA15.07%84.93%Net BuyingNet Selling
LITS22.74%50.97%Net Selling
SNSE0.43%99.57%Net Selling
TAOX7.96%3.37%Net Selling
CRVO3.05%96.95%Net Buying
View Top Biotech Stocks

Atara Biotherapeutics Stock Ownership FAQ

Who owns Atara Biotherapeutics?

Atara Biotherapeutics (NASDAQ: ATRA) is owned by 25.06% institutional shareholders, 141.22% Atara Biotherapeutics insiders, and 0.00% retail investors. Panacea Innovation Ltd is the largest individual Atara Biotherapeutics shareholder, owning 2.66M shares representing 32.47% of the company. Panacea Innovation Ltd's Atara Biotherapeutics shares are currently valued at $13.25M.

If you're new to stock investing, here's how to buy Atara Biotherapeutics stock.
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