MarketPeel
Insider Trading Intelligence
Chief Operating Officer
Wed, Dec 17, 2025
Dec 17
sold $585.29k of CSTL
14,888 shares @ $39.31
Decreased holdings by -54.70%
3rd largest trade (out of 57)
Cluster Buy
Trade made by an officer
Part of a cluster of 3 transactions by 3 insiders
Unscheduled trade
25% win rate · -34.6% median edge vs SPY (12 trades, 90-day · small sample)
Price 75% above 200-day moving average
Small Cap stock — insider trades carry more weight
CSTLCASTLE BIOSCIENCES INC
HealthcareDiagnostics & Research
1D0.00%
1W+0.34%
1M+14.81%
3M-3.42%
6M
1Y

Recent insider activity at CSTL

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