Derek Maetzold

Founder at CASTLE BIOSCIENCES, INC.

Net worth: 5 M $ as of 31/05/2026

64 year

76 connections

Health Technology

Commercial Services

Consumer Services

Profile

Derek J.
Maetzold is the founder of Castle Biosciences, Inc., founded in 2007, where the title held is President, Chief Executive Officer & Director.
Current jobs include Director at AltheaDx, Inc. since 2021, Director at Prelude Corp.
since 2022, Director at Ocular Melanoma Foundation, and Director at IMPACT Melanoma, Inc. Former jobs include Director & Associate Director-Marketing at Amylin Pharmaceuticals, Inc. from 1996 to 1998, Senior Director-Business Development at Schering-Plough Corp.
from 1999 to 2003, Associate Director-Marketing at Sandoz Pharmaceuticals Corp.
from 1985 to 1996, Vice President-Sales & Marketing at Encysive Pharmaceuticals, Inc. from 2003 to 2008, and Account Supervisor at Integrated Communications Corp.
from 1998 to 1999.
Education includes undergraduate studies at George Mason University.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
CASTLE BIOSCIENCES, INC. 0.83%	01/07/2026	250,239 ( 0.83% )	5 M $	31/05/2026

Derek Maetzold active positions

Companies	Position	Start
CASTLE BIOSCIENCES, INC.	Founder	01/09/2007
ALTHEADX INC	Director/Board Member	26/05/2021
Ocular Melanoma Foundation Ocular Melanoma Foundation Investment Trusts/Mutual FundsMiscellaneous Operates as a charitable organization that provides eye cancer patient education and research funding services	Director/Board Member	-
Prelude Corp. Prelude Corp. BiotechnologyHealth Technology Develops breast cancer tools to manage early stage breast cancer	Director/Board Member	02/02/2022

All active positions of Derek Maetzold

Former positions of Derek Maetzold

Companies	Position	End
Encysive Pharmaceuticals, Inc. Encysive Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Discovers, develops and markets drugs for the treatment of cardiovascular, vascular and related inflammatory diseases	Sales & Marketing	01/05/2008
Schering-Plough Corp. Schering-Plough Corp. Pharmaceuticals: MajorHealth Technology Manufactures and sells pharmaceutical & health care products	Corporate Officer/Principal	01/01/2003
Integrated Communications Corp. Integrated Communications Corp. Advertising/Marketing ServicesCommercial Services Creates ads for pharmaceutical companies	Corporate Officer/Principal	01/01/1999
Amylin Pharmaceuticals, Inc. Amylin Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Discovers, develops and commercializes medicines for diabetes, obesity and cardiovascular diseases	Director/Board Member	01/01/1998
Sandoz Pharmaceuticals Corp.	Sales & Marketing	01/01/1996

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Linked companies

Private companies	10
Amylin Pharmaceuticals, Inc. Amylin Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Discovers, develops and commercializes medicines for diabetes, obesity and cardiovascular diseases	Health Technology
Schering-Plough Corp. Schering-Plough Corp. Pharmaceuticals: MajorHealth Technology Manufactures and sells pharmaceutical & health care products	Health Technology
Encysive Pharmaceuticals, Inc. Encysive Pharmaceuticals, Inc. Pharmaceuticals: MajorHealth Technology Discovers, develops and markets drugs for the treatment of cardiovascular, vascular and related inflammatory diseases	Health Technology
Castle Biosciences, Inc. Castle Biosciences, Inc. Medical SpecialtiesHealth Technology Operates dermatological cancer company which provides clinically actionable genomic information to make accurate treatment decisions	Health Technology
AltheaDx, Inc. AltheaDx, Inc. Medical SpecialtiesHealth Technology Operates as a commercial stage molecular diagnostics company	Health Technology
Integrated Communications Corp. Integrated Communications Corp. Advertising/Marketing ServicesCommercial Services Creates ads for pharmaceutical companies	Commercial Services
George Mason University George Mason University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Sandoz Pharmaceuticals Corp.
Prelude Corp. Prelude Corp. BiotechnologyHealth Technology Develops breast cancer tools to manage early stage breast cancer	Health Technology
Ocular Melanoma Foundation Ocular Melanoma Foundation Investment Trusts/Mutual FundsMiscellaneous Operates as a charitable organization that provides eye cancer patient education and research funding services	Miscellaneous