Trade Summary

6 days ago, Maetzold Derek J, serving as Pres, Chief Exec. Officer at Castle Biosciences Inc (CSTL), sold 9,836 shares at $22.15 per share, for a total transaction value of $217,904.00. Following this transaction, Maetzold Derek J now holds 264,727 shares of CSTL.

This sale represents a 4.00% decrease in Maetzold Derek J's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Thursday, May 7, 2026 and publicly disclosed via SEC Form 4 filing on Monday, May 11, 2026, 4 days after the trade was made.

Castle Biosciences Inc operates in the HEALTHCARE sector, specifically within the DIAGNOSTICS & RESEARCH industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.