Derek J Maetzold sold $523K of CSTL stock

Derek J Maetzold, Pres. & Chief Exec. Officer of Castle Biosciences Inc (CSTL), sold 14,496 shares of CSTL stock worth $523K, per an SEC Form 4 filed Nov 4, 2026.

The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.

The trade happened on Nov 2, 2026, 2 days before it was made public.

CSTL has moved -1.3% since the trade date, from $34.94 to $34.50 (Nov 12, 2026 close).