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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% Owner2026-01-1280,554$6.07
$489.04kSell
Panacea Innovation Ltd10% Owner2025-11-281$14.03
$14.03Sell
Anhco NguyenPresident and CEO2025-11-172,859$13.19
$37.70kSell
Anhco NguyenPresident and CEO2025-11-1756$13.19
$738.53Sell
Yanina GranthuertaChief Accounting Officer2025-11-171,645$13.19
$21.69kSell
Yanina GranthuertaChief Accounting Officer2025-11-1785$13.19
$1.12kSell
Yanina GranthuertaChief Accounting Officer2025-11-1774$13.19
$976.13Sell
Anhco NguyenPresident and CEO2025-08-181,281$11.62
$14.88kSell
Yanina GranthuertaChief Accounting Officer2025-08-1886$11.61
$998.72Sell
Anhco NguyenPresident and CEO2025-08-1857$11.61
$661.94Sell

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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
Domain Partners VIII LP29.70%2,141,542$9.62MInsider
Panacea Innovation Ltd19.13%1,379,401$6.19MInsider
Adiumentum Capital Fund I LP16.77%1,209,395$5.43MInsider
Joel S. Marcus12.48%899,855$4.04MInsider
Isaac E. Ciechanover8.64%622,930$2.80MInsider
Eric Dobmeier7.81%563,325$2.53MInsider
Redmile Group LLC6.13%441,701$1.98MInsider
Jakob Dupont4.03%290,794$1.31MInsider
Charlene A. Banard3.83%276,010$1.24MInsider
Christopher Haqq3.81%274,631$1.23MInsider

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ATRA vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ATRA7.56%92.44%Net BuyingNet Selling
HOWL8.29%88.70%Net SellingNet Selling
KYNB4.89%95.11%Net BuyingNet Selling
ATNM11.73%88.27%Net Selling
LTRN19.24%59.87%Net Selling
View Top Biotech Stocks

Atara Biotherapeutics Stock Ownership FAQ

Who owns Atara Biotherapeutics?

Atara Biotherapeutics (NASDAQ: ATRA) is owned by 11.54% institutional shareholders, 141.14% Atara Biotherapeutics insiders, and 0.00% retail investors. Domain Partners VIII LP is the largest individual Atara Biotherapeutics shareholder, owning 2.14M shares representing 29.70% of the company. Domain Partners VIII LP's Atara Biotherapeutics shares are currently valued at $9.49M.

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