Trade Summary

1 week ago, Maetzold Derek J, serving as Pres, Chief Exec. Officer at Castle Biosciences Inc (CSTL), sold 830 shares at $40.35 per share, for a total transaction value of $33,491.00. Following this transaction, Maetzold Derek J now holds 294,902 shares of CSTL.

The trade was executed on Monday, December 22, 2025 and publicly disclosed via SEC Form 4 filing on Monday, December 29, 2025, 7 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.