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  • Insider Ownership

Insider Trading & Ownership of DEREK J. MAETZOLD

Location
Friendswood, TX
Summary
The estimated net worth of DEREK J. MAETZOLD is at least $17,142,950 dollars as of 05 Feb 2026. DEREK J. MAETZOLD is the Pres. & Chief Exec. Officer, Director of CASTLE BIOSCIENCES INC and owns shares of CASTLE BIOSCIENCES INC (CSTL) stock worth about $17.14M.
Signature
/s/ Frank Stokes, Attorney-in-fact
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Ownership of DEREK J. MAETZOLD

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
CSTL CASTLE BIOSCIENCES INC Pres. & Chief Exec. Officer, Director $17,142,950 -$5,195,007 -23% 03 Feb 2026

Insider Transactions Reported by DEREK J. MAETZOLD:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.