MarketPeel
Insider Trading Intelligence
Fri, May 22, 2026
May 22
bought $981.30k of PRTA
100,000 shares @ $9.81
Increased holdings by +13.60%
4th largest trade (out of 19)
Cluster Buy
Trade made by a 10% owner
Part of a cluster of 2 transactions by 2 insiders
Unscheduled trade
17% win rate · -6.4% median edge vs SPY (6 trades, 90-day · small sample)
Small Cap stock — insider trades carry more weight
PRTAPROTHENA CORP PUBLIC LTD CO
HealthcareBiotechnology
1D0.00%
1W-3.29%
1M+4.76%
3M
6M
1Y

Recent insider activity at PRTA

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