DJ
Insider selling
Derek J Maetzold sold $463K of CSTL stock
Derek J Maetzold, Pres. & Chief Exec. Officer of Castle Biosciences Inc (CSTL), sold 14,496 shares of CSTL stock worth $463K, per an SEC Form 4 filed Oct 21, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Oct 19, 2026, 2 days before it was made public.
CSTL has moved +3.2% since the trade date, from $32.16 to $33.19 (Oct 22, 2026 close).
- Traded
- Oct 19, 2026
- Disclosed
- Oct 21, 2026
- Filing delay
- 2 days
- Price since
- +3.2%
- Role
- Pres. & Chief Exec. Officer
- Source
- SEC Form 4
More CSTL insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.