CSTL

MKT CAP:$636M

Castle Biosciences Inc

Market Cap

$636M

Healthcare·Diagnostics & Research·🇺🇸 United States·NASDAQ

Healthcare·Diagnostics·🇺🇸·NASDAQ

Stock Price

$21.01-$17.53 (-45.49%)

Jun 5, 2026

52W High $43.0452W Low $14.65

Company Details

Castle Biosciences, Inc., a molecular diagnostics company, provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), atopic dermatitis (AD), and uveal melanoma. The company offers DecisionDx-...

CEO

—

IPO Date

Jul 25, 2019

Website

castlebiosciences.com

Key Metrics TTM

Revenue

$340M

-2.1% YoY

Net Income

-$13M

EPS (Diluted)

Free Cash Flow

$5M

Revenue / Share

$11.37

Gross Margin

77.1%

Operating Margin

-9.8%

Net Margin

-3.8%

FCF Margin

1.3%

P/S

1.9x

P/E

Earnings Reports

Q2 2026

Aug 3, 2026

PENDING

Q1 2026

May 6, 2026

$84M-4.9%

FY 2025

Feb 26, 2026

$344M+3.7%

Q4 2025

Feb 26, 2026

$87M+0.8%

Q3 2025

Nov 3, 2025

$83M-3.2%

Revenue & Profitability

Valuation

Operating Cash Flow

CapEx Spend

OpEx vs Revenue Growth (YoY)

Stock-Based Compensation

OpEx Breakdown

War Chest

Shares Outstanding

Revenue Per Employee

Revenue / Employee