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© 2026 InsiderTradingScreener.com. Data from SEC EDGAR Form 4 filings.For informational purposes only. Not financial advice.

Home/Companies/Atara Biotherapeutics Inc

Atara Biotherapeutics Inc

35 insider trades tracked

ATRA

Insider trades

35

Total bought

$857K

Total sold

$648K

Unique insiders

5

Recent insider trades

Most recent Form 4 filings for Atara Biotherapeutics Inc.

Panacea Innovation Ltdtax-withheld5 shares ofATRAat $5.23$26Mar 19Details
Panacea Innovation Ltdexercised259,163 shares ofATRAat $0$26Mar 19Details
Nguyen AnhCogranted81,100 shares ofATRAat $0Mar 11Details
Grant-Huerta Yaninagranted20,300 shares of

Insiders at this company

Executives and directors who have filed Form 4s.

Nguyen AnhCo12 trades
Grant-Huerta Yanina11 trades
Panacea Innovation Ltd7 trades
Hyllengren Eric J3 trades
Henrich Jill2 trades

at $0

Grant-Huerta Yaninasold100 shares ofATRAat $5.083$508Mar 4Details

Grant-Huerta Yaninasold377 shares ofATRAat $5.082$2KMar 4Details

Grant-Huerta Yaninasold1,603 shares ofATRAat $5.081$8KMar 4Details

Grant-Huerta Yaninasold24 shares ofATRAat $5.077$122Mar 4Details

Nguyen AnhCosold1,442 shares ofATRAat $5.087$7KMar 4Details

Nguyen AnhCosold1,298 shares ofATRAat $5.086$7KMar 4Details

Nguyen AnhCosold58 shares ofATRAat $5.08$295Mar 4Details

Nguyen AnhCosold198 shares ofATRAat $5.079$1KMar 4Details

Panacea Innovation Ltdsold80,554 shares ofATRAat $6.071$489KJan 14Details

Panacea Innovation Ltdtax-withheld1 shares ofATRAat $14.03$14Dec 1Details

Panacea Innovation Ltdexercised48,737 shares ofATRAat $0$5Dec 1Details

Nguyen AnhCosold56 shares ofATRAat $13.188$739Nov 19Details

Nguyen AnhCosold2,859 shares ofATRAat $13.186$38KNov 19Details

Grant-Huerta Yaninasold74 shares ofATRAat $13.191$976Nov 19Details

Grant-Huerta Yaninasold85 shares ofATRAat $13.188$1KNov 19Details

Grant-Huerta Yaninasold1,645 shares ofATRAat $13.186$22KNov 19Details

Nguyen AnhCosold1,620 shares ofATRAat $11.617$19KAug 20Details

Nguyen AnhCosold1,281 shares ofATRAat $11.615$15KAug 20Details

Nguyen AnhCosold57 shares ofATRAat $11.613$662Aug 20Details

Grant-Huerta Yaninasold1,668 shares ofATRAat $11.614$19KAug 20Details

Grant-Huerta Yaninasold86 shares ofATRAat $11.613$999Aug 20Details

Grant-Huerta Yaninasold55 shares ofATRAat $11.609$639Aug 20Details

Panacea Innovation Ltdbought55,000 shares ofATRAat $12.19$670KAug 19Details

Panacea Innovation Ltdbought19,335 shares ofATRAat $9.639$186KJul 21Details

Henrich Jillsold3,879 shares ofATRAat $0.72$3KMar 6Details

Nguyen AnhCosold10,746 shares ofATRAat $0.72$8KMar 6Details

Atara Biotherapeutics Inc (ATRA) — Insider Trading Activity | Insider Trading Screener