Atara Biotherapeutics, Inc. (ATRA) Insider Trading
Sector: Biotechnology · Market Cap: $105M · 0 insider purchases in the last 7 days
No open market insider purchases at Atara Biotherapeutics, Inc. in the last 7 days.
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Start for FreeAbout Atara Biotherapeutics, Inc. Insider Trading
1 insider at Atara Biotherapeutics, Inc. (ATRA) has purchased stock in the past 90 days, totaling $4.7M across 1 transaction (507,407 shares).
The most recent purchase was by 10%+ Owner EcoR1 Capital, LLC on May 7, 2026 — a $4.7M buy of 507,407 shares at $9.35, bringing their total holdings to 1,552,000 shares.
ATRA is in the Biotechnology sector within the Biotechnology industry with a market cap of $105M.
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