ATRA

Atara Biotherapeutics, Inc.

Insider Trades

Actor	Holding Value	Last Transaction	Amount	Transaction Price	Current Price
Nguyen AnhCoDirector, Officer: President And CEO $1.3M137.8k shares SellMay 18, 2026 $47.8K5.2k shares $9.13 --
Grant-Huerta YaninaChief Accounting Officer $453k49.6k shares SellMay 18, 2026 $22.0K2.4k shares $9.13 --
EcoR1 Capital, LLC10 Percent Owner $15M1.6M shares BuyMay 7, 2026 $4.7M507.4k shares $9.35 --
Panacea Innovation Ltd10 Percent Owner $10M1M shares SellMay 7, 2026 $3.2M313.4k shares $10.10 --
Panacea Innovation Ltd10 Percent Owner $0259.2k shares Grant / ExerciseMar 17, 2026 $26259.2k shares $0.0001 --
Panacea Innovation Ltd10 Percent Owner $1.6M307.9k shares Grant / ExerciseMar 17, 2026 $265 shares $5.23 --