MarketPeel
Insider Trading Intelligence
Chief Operating Officer
Tue, Jun 16, 2026
29d ago
sold $177.84k of CSTL
8,587 shares @ $20.71
Decreased holdings by -22.00%
11th largest trade (out of 57)
Cluster Buy
Trade made by an officer
Part of a cluster of 2 transactions by 2 insiders
10b5-1 scheduled trade
31% win rate · -29.1% median edge vs SPY (13 trades, 90-day · small sample)
Price 29% below 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

FREE · DAILY · 6 AM ET

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

Feedback