MarketPeel
Insider Trading Intelligence
President and CEO
Mon, Mar 9, 2026
Mar 9
bought $0.00 of ATRA
81,100 shares @ $0.00
Increased holdings by +130.90%
23rd largest trade (out of 24)
Cluster Buy
Trade made by an officer
Part of a cluster of 2 transactions by 2 insiders
Unscheduled trade
35% win rate · -10.6% median edge vs SPY (20 trades, 90-day)
Price 39% below 200-day moving average
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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