Trade Summary

4 days ago, Juvenal Tobin W, serving as Chief Commercial Officer at CASTLE BIOSCIENCES INC (CSTL), sold 19,040 shares at $29.21 per share, for a total transaction value of $556,174.51. Following this transaction, Juvenal Tobin W now holds 78,995 shares of CSTL.

This sale represents a 19.42% decrease in Juvenal Tobin W's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Friday, July 31, 2026 and publicly disclosed via SEC Form 4 filing on Tuesday, August 4, 2026 at 4:36 PM ET, 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.