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Castle Biosciences Inc

CSTL · NASDAQ

Research and Development in Biotechnology

Castle Biosciences is a commercial-stage dermatologic cancer company focused on providing physicians and their patients with personalized, clinically actionable genomic information to make more accurate treatment decisions. The Company currently offers tests for patients with cutaneous melanoma (DecisionDx®-Melanoma, DecisionDx®-CMSeq), cutaneous squamous cell carcinoma (DecisionDx®-SCC), suspicious pigmented lesions (DecisionDx® DiffDx™-Melanoma) and uveal melanoma (DecisionDx®-UM, DecisionDx®-PRAME and DecisionDx®-UMSeq).Castle also has active research and development programs for tests in other dermatologic diseases with high clinical need. Castle Biosciences is based in Friendswood, Texas (Houston), and has laboratory operations in Phoenix, Arizona.

Market Data

Price $26.60 -0.42 (-1.55%)
Market Cap$803M
P/E Ratio—
EPS$—
52W High$44.28
52W Low$14.59
Beta1.19

Data from Finnhub · Updated Mar 10, 2026

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