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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 $15,095,717 dollars as of 07 Jan 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 $15.1M.
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 $15,095,717 -$4,947,421 -25% 05 Jan 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.