MarketPeel
Insider Trading Intelligence
Pres. & Chief Exec. Officer
Wed, Mar 4, 2026
Mar 4
sold $0.00 of CSTL
31,110 shares @ $0.00
Decreased holdings by -33.30%
1402nd largest trade (out of 1428)
Cluster BuyPositive 90D History
Trade made by an officer
Part of a cluster of 6 transactions by 4 insiders
70% win rate · +13.4% median edge vs SPY (1286 trades, 90-day)
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

FREE · DAILY · 6 AM ET

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback