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ATRA Atara Biotherapeutics, Inc. logo

ATRA Atara Biotherapeutics, Inc.

Healthcare
$9.80+4.93%ClosedMarket Cap: $88.3M

As of 2026-05-25

Insider Statistics (Q2 2026)

Acquisitions

1

Dispositions

3

Buy/Sell Ratio

0.33

Net Shares

+186,306

Shares Acquired

507,407

Shares Disposed

321,101

Total Bought ($)

$1.00

Total Sold ($)

$3.00

Recent Insider Trades
Filing DateNameTypeActionSharesPriceShares After
Wed May 20Nguyen AnhCodirector, officer: President and CEOSell5,241$9.13137,837
Wed May 20Grant-Huerta Yaninaofficer: Chief Accounting OfficerSell2,414$9.1349,636
Mon May 11Panacea Innovation Ltd10 percent ownerSell313,446$10.101,011,000
Mon May 11EcoR1 Capital, LLC10 percent ownerBuy507,407$9.351,552,000
Mon May 11EcoR1 Capital, LLC10 percent ownerSell0$0.001,044,593
Thu Mar 19Panacea Innovation Ltd10 percent ownerSell259,163$0.00307,899
Thu Mar 19Panacea Innovation Ltd10 percent ownerSell5$5.23307,894
Wed Mar 11Nguyen AnhCodirector, officer: President and CEOSell81,100$0.00143,078
Wed Mar 11Grant-Huerta Yaninaofficer: Chief Accounting OfficerSell20,300$0.0052,050
Wed Mar 04Nguyen AnhCodirector, officer: President and CEOSell198$5.0864,776
Wed Mar 04Grant-Huerta Yaninaofficer: Chief Accounting OfficerSell1,603$5.0832,227
Wed Mar 04Grant-Huerta Yaninaofficer: Chief Accounting OfficerSell377$5.0831,850
Wed Mar 04Grant-Huerta Yaninaofficer: Chief Accounting OfficerSell100$5.0831,750
Wed Mar 04Grant-Huerta Yaninaofficer: Chief Accounting OfficerSell24$5.0833,830