MarketPeel
Insider Trading Intelligence
Thu, May 7, 2026
May 7
bought $4.74m of ATRA
507,407 shares @ $9.35
Increased holdings by +48.60%
28th largest trade (out of 136)
Abnormally LargeLarge Trade
Trade made by a 10% owner
Unscheduled trade
46% win rate · -5.6% median edge vs SPY (107 trades, 90-day)
Abnormally large trade for this company
Micro Cap stock — higher insider information edge
ATRAAtara Biotherapeutics, Inc.
HealthcareBiotechnology
1D0.00%
1W+10.85%
1M+13.44%
3M
6M
1Y

Recent insider activity at ATRA

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