Trade Summary

5 days ago, Maetzold Derek J, serving as Pres, Chief Exec. Officer at Castle Biosciences Inc (CSTL), sold 4,172 shares at $20.15 per share, for a total transaction value of $84,066.00. Following this transaction, Maetzold Derek J now holds 261,105 shares of CSTL.

This sale represents a 2.00% decrease in Maetzold Derek J's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Wednesday, May 20, 2026 and publicly disclosed via SEC Form 4 filing on Friday, May 22, 2026 at 4:12 PM ET, 2 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.