AlphaYouDJ
Insider selling
Derek J Maetzold sold $512K of Castle Biosciences Inc (CSTL) stock
Derek J Maetzold, Pres. & Chief Exec. Officer of Castle Biosciences Inc (CSTL), sold 14,496 shares of CSTL stock worth $512K, per an SEC Form 4 filed Sep 23, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Sep 21, 2026, 2 days before it was made public.
CSTL has moved -0.4% since the trade date, from $34.99 to $34.85 (Sep 22, 2026 close).
- Traded
- Sep 21, 2026
- Disclosed
- Sep 23, 2026
- Filing delay
- 2 days
- Price since
- -0.4%
- 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.