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Castle Biosciences CSTL Gross margin

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Other financials

Income statement

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Revenue$83.7M-4.9%
Gross profit$63.1M-11.8%
Operating income-$18.4M+34.1%
Net income-$14.5M+43.8%
EPS (diluted)-$0.49+45.6%

Balance sheet

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Cash & equivalents$63.8M-28.9%
Total debt$36.7M+42.1%
Total equity$461.4M+4.8%
Total assets$547.8M+9.2%

Cash flow

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Operating cash flow-$22.1M-267%
CapEx$12.5M+163%
Free cash flow-$34.6M-221%

Valuation

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Market cap$694.86M+29.9%
Enterprise value$667.82M+41.8%
P/S2×+0.5×

Profitability

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Operating margin-9.8%-30.8pp
Net margin-3.8%-10.2pp
FCF margin1.3%-10.7pp

Returns & leverage

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Return on equity-2.8%-10.6pp
Debt / equity0.1×0.0×
Current ratio6.7×-2.6×

Where this comes from

Calculated from Castle Biosciences’s reported figures.

gross profit/total revenue=77.9%

Based on trailing twelve months.

The official record: Castle Biosciences’s 10-Q, filed May 6, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is Castle Biosciences's gross margin?
Castle Biosciences (CSTL) reported gross margin of 77.9% in Q1 2026.
How has Castle Biosciences's gross margin changed year-over-year?
Castle Biosciences's gross margin decreased by 4.9% year-over-year, from 81.9% to 77.9%.
What is the long-term trend for Castle Biosciences's gross margin?
Over 5 years (2020 to 2025), Castle Biosciences's gross margin has grown at a -1.3% compound annual growth rate (CAGR), from 84.5% to 79.4%.
What does gross margin mean?
Gross profit (revenue minus cost of revenue) as a percentage of revenue, on a trailing-twelve-month basis. Measures how much of each sales dollar survives the direct cost of producing the goods or services sold.