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Castle Biosciences CSTL Operating Cash Flow

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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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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/S+0.5×

Profitability

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Gross margin77.9%-4.1pp
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

Reported directly by Castle Biosciences in its filing.

Tagged under the XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities.

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 operating cash flow?
Castle Biosciences (CSTL) reported operating cash flow of -$22.13M in Q1 2026.
How has Castle Biosciences's operating cash flow changed year-over-year?
Castle Biosciences's operating cash flow decreased by 266.6% year-over-year, from -$6.04M to -$22.13M.
What is the long-term trend for Castle Biosciences's operating cash flow?
Over 3 years (2021 to 2025), Castle Biosciences's operating cash flow has grown at a 50.2% compound annual growth rate (CAGR), from -$18.98M to $64.35M.
What does operating cash flow mean?
Total cash generated by or used in core business operations — the single most important cash flow metric for assessing business health.