CASTLE BIOSCIENCES, INC. financials
Source: EDGAR filings · Built 2026-06-02T02:45:08Z
Key metrics by reporting period
Up to six most-recent periods side-by-side. Rows are the curated key lines — revenue, margins, cash, debt, equity, cash-flow totals, plus the derived and valuation metrics we compute on top. For every tag a filer reported in one period, use the single-filing drilldown below.
Derived Metrics
| Concept | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 |
|---|---|---|---|---|---|---|
| Free Cash Flow | 28.21M | 36.44M | -19.39M | -47.41M | -22.47M | 5.11M |
| EBITDA | -2.04M | 24.67M | -55.65M | -62.31M | -36.67M | -6.07M |
| Working Capital | 292.42M | 310.76M | 247.97M | 256.16M | 328.86M | 408.72M |
| Net Debt | -79.71M | -93.26M | -83.44M | -109.40M | -321.32M | -409.85M |
| Gross Margin | 79.37% | 81.87% | 79.53% | 76.64% | 83.18% | 84.54% |
| Operating Margin | -12.44% | 2.61% | -30.93% | -53.16% | -42.60% | -10.44% |
| Net Margin | -7.02% | 5.49% | -26.15% | -48.99% | -33.26% | -16.42% |
| Return on Equity (ROE) | -5.13% | 4.00% | -14.69% | -16.82% | -7.60% | -2.47% |
| Return on Assets (ROA) | -4.18% | 3.43% | -12.68% | -15.01% | -6.76% | -2.34% |
| Current Ratio | 5.26× | 7.29× | 6.20× | 8.09× | 14.21× | 20.58× |
| Debt-to-Equity | 0.08× | 0.06× | 0.04× | 0.03× | 0.02× | 0.00× |
| Cash Conversion Ratio | -2.66× | 3.56× | 0.10× | 0.62× | 0.61× | -0.96× |
| Accruals Ratio | -0.15× | -0.09× | -0.11× | -0.06× | -0.03× | -0.05× |
| SBC % of Revenue | 13.33% | 15.15% | 23.30% | 26.50% | 23.11% | 13.26% |
| CapEx Coverage | 1.78× | 2.28× | -0.41× | -7.24× | -5.44× | 2.08× |
| Free Cash Flow Per Share | $0.97 | $1.25 | $-0.72 | $-1.82 | $-0.89 | $0.27 |
Valuation Metrics
| Concept | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 |
|---|---|---|---|---|---|---|
| P/E Trailing (Diluted) | — | 42.98× | — | — | — | — |
| P/FCF | 39.97× | 21.39× | — | — | — | 248.52× |
| FCF Yield | 2.50% | 4.67% | — | — | — | 0.40% |
| EV / EBITDA | — | 26.99× | — | — | — | — |
| P/S | 3.35× | 2.29× | 2.69× | 4.56× | 11.56× | 26.60× |
| P/B | 2.45× | 1.67× | 1.51× | 1.57× | 2.64× | 4.01× |
Income Statement
| Concept | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 |
|---|---|---|---|---|---|---|
| Revenue from Contract with Customer, Excluding Assessed Tax | 344.23M | 332.07M | 219.79M | 137.04M | 94.08M | 62.65M |
| Cost of Goods and Services Sold | — | — | — | — | 15.82M | 9.69M |
| Cost of Revenue | 71.03M | 60.20M | 44.98M | 32.01M | 15.82M | — |
| Gross Profit | — | — | — | — | — | 52.96M |
| Research and Development Expense | 51.85M | 52.04M | 53.62M | 44.90M | 29.65M | 13.26M |
| Selling, General and Administrative Expense | 229.32M | 200.05M | 180.15M | 143.00M | 86.74M | 48.13M |
| Operating Income (Loss) | -42.81M | 8.67M | -67.98M | -72.86M | -40.08M | -6.54M |
| Income Tax Expense (Benefit) | -5.36M | 3.32M | 101.00K | -1.77M | -8.72M | 84.00K |
| Net Income (Loss) Attributable to Parent | -24.16M | 18.25M | -57.47M | -67.14M | -31.29M | -10.28M |
| Earnings Per Share, Basic | $-0.83 | $0.66 | $-2.14 | $-2.58 | $-1.24 | $-0.54 |
| Weighted Average Number of Shares Outstanding, Basic | 28.99M | 27.78M | 26.80M | 26.05M | 25.14M | 18.93M |
| Earnings Per Share, Diluted | $-0.83 | $0.62 | $-2.14 | $-2.58 | $-1.24 | $-0.54 |
| Weighted Average Number of Shares Outstanding, Diluted | 28.99M | 29.25M | 26.80M | 26.05M | 25.14M | 18.93M |
Balance Sheet
| Concept | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 |
|---|---|---|---|---|---|---|
| Cash and Cash Equivalents, at Carrying Value | 116.73M | 119.71M | 98.84M | 122.95M | 329.63M | 409.85M |
| Assets, Current | 361.10M | 360.15M | 295.63M | 292.29M | 353.74M | 429.59M |
| Assets | 578.56M | 531.24M | 453.34M | 447.33M | 462.57M | 439.33M |
| Long-term Debt | 10.06M | 10.02M | 0 | — | — | — |
| Liabilities, Current | 68.68M | 49.39M | 47.67M | 36.13M | 24.89M | 20.88M |
| Long-term Debt, Excluding Current Maturities | 9.64M | 9.74M | 0 | — | — | 0 |
| Liabilities | 107.68M | 75.40M | 62.07M | 48.18M | 50.83M | 23.64M |
| Stockholders' Equity Attributable to Parent | 470.87M | 455.83M | 391.27M | 399.15M | 411.74M | 415.69M |
| Common Stock, Shares, Outstanding | 29.69M | 28.48M | 27.41M | 26.55M | 25.38M | 24.81M |
Cash Flow Statement
| Concept | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 |
|---|---|---|---|---|---|---|
| Net Cash Provided by (Used in) Operating Activities | 64.35M | 64.87M | -5.63M | -41.66M | -18.98M | 9.87M |
| Payments to Acquire Property, Plant, and Equipment | 36.02M | 28.33M | 13.62M | 5.63M | 3.48M | 4.75M |
| Net Cash Provided by (Used in) Investing Activities | -60.37M | -50.14M | -16.18M | -166.54M | -66.66M | -4.75M |
| Net Cash Provided by (Used in) Financing Activities | -6.96M | 6.14M | -2.30M | 1.51M | 5.42M | 305.89M |
Derived Metrics
| Concept | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 |
|---|---|---|---|---|---|---|
| Free Cash Flow | -34.61M | 19.72M | 8.49M | 725.00K | -10.80M | 16.77M |
| EBITDA | -14.48M | -50.00K | — | — | 1.84M | 9.82M |
| Working Capital | 280.14M | 292.42M | 302.26M | 297.78M | 312.11M | 310.76M |
| Net Debt | -27.04M | -79.71M | -48.42M | -44.88M | -63.84M | -93.26M |
| Gross Margin | 75.46% | 78.95% | 77.48% | 79.55% | 81.38% | 81.25% |
| Operating Margin | -22.00% | -4.40% | -8.19% | -4.93% | -31.74% | 4.69% |
| Net Margin | -17.35% | -2.68% | -0.60% | 5.25% | -29.38% | 11.11% |
| Return on Equity (ROE) | -3.15% | -0.50% | -0.11% | 0.99% | -5.87% | 2.10% |
| Return on Assets (ROA) | -2.65% | -0.40% | -0.09% | 0.83% | -5.15% | 1.81% |
| Current Ratio | 6.75× | 5.26× | 6.47× | 6.85× | 9.37× | 7.29× |
| Debt-to-Equity | 0.08× | 0.08× | 0.08× | 0.08× | 0.06× | 0.06× |
| Cash Conversion Ratio | 1.52× | -11.55× | -74.68× | 3.27× | 0.23× | 2.54× |
| Accruals Ratio | 0.01× | -0.05× | -0.07× | -0.02× | -0.04× | -0.03× |
| SBC % of Revenue | 11.68% | 13.11% | 41.53% | 25.97% | 12.71% | 13.25% |
| CapEx Coverage | -1.77× | 3.73× | 1.29× | 1.05× | -1.27× | 3.21× |
| Free Cash Flow Per Share | $-1.16 | $0.68 | $0.29 | $0.02 | $-0.38 | $0.57 |
Valuation Metrics
| Concept | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 |
|---|---|---|---|---|---|---|
| P/E Trailing (Diluted) | — | — | — | — | — | 42.98× |
| P/S | 2.19× | 3.35× | 1.93× | 1.71× | 1.66× | 2.29× |
| P/B | 1.61× | 2.45× | 1.42× | 1.30× | 1.31× | 1.67× |
Income Statement
| Concept | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 |
|---|---|---|---|---|---|---|
| Revenue from Contract with Customer, Excluding Assessed Tax | 83.68M | 87.01M | 83.04M | 86.19M | 87.99M | 86.31M |
| Cost of Revenue | 20.53M | 18.32M | 18.70M | 17.63M | 16.38M | 16.18M |
| Research and Development Expense | 14.43M | 13.52M | 12.96M | 12.79M | 12.59M | 11.77M |
| Selling, General and Administrative Expense | 64.90M | 56.73M | 55.91M | 58.06M | 58.62M | 49.97M |
| Operating Income (Loss) | -18.41M | -3.83M | -6.80M | -4.25M | -27.93M | 4.05M |
| Income Tax Expense (Benefit) | 109.00K | -382.00K | 115.00K | -4.67M | -423.00K | -1.71M |
| Net Income (Loss) Attributable to Parent | -14.52M | -2.33M | -501.00K | 4.52M | -25.85M | 9.59M |
| Earnings Per Share, Basic | $-0.49 | $-0.07 | $-0.02 | $0.16 | $-0.90 | $0.35 |
| Weighted Average Number of Shares Outstanding, Basic | 29.89M | 28.99M | 29.07M | 28.91M | 28.61M | 27.78M |
| Earnings Per Share, Diluted | $-0.49 | $-0.07 | $-0.02 | $0.15 | $-0.90 | $0.32 |
| Weighted Average Number of Shares Outstanding, Diluted | 29.89M | 28.99M | 29.07M | 29.55M | 28.61M | 29.25M |
Balance Sheet
| Concept | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 |
|---|---|---|---|---|---|---|
| Cash and Cash Equivalents, at Carrying Value | 63.76M | 116.73M | 85.56M | 82.23M | 89.69M | 119.71M |
| Assets, Current | 328.90M | 361.10M | 357.57M | 348.67M | 349.39M | 360.15M |
| Assets | 547.80M | 578.56M | 562.79M | 544.73M | 501.71M | 531.24M |
| Long-term Debt | 10.07M | 10.06M | 10.05M | 10.04M | 10.03M | 10.02M |
| Liabilities, Current | 48.76M | 68.68M | 55.31M | 50.89M | 37.27M | 49.39M |
| Long-term Debt, Excluding Current Maturities | 8.40M | 9.64M | 10.05M | 8.10M | 8.92M | 9.74M |
| Liabilities | 86.39M | 107.68M | 95.74M | 89.35M | 61.41M | 75.40M |
| Stockholders' Equity Attributable to Parent | 461.42M | 470.87M | 467.05M | 455.38M | 440.31M | 455.83M |
| Common Stock, Shares, Outstanding | 30.30M | 29.69M | 29.16M | 28.98M | 28.84M | 28.48M |
Cash Flow Statement
| Concept | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 |
|---|---|---|---|---|---|---|
| Net Cash Provided by (Used in) Operating Activities | -22.13M | 26.93M | 37.42M | 14.79M | -6.04M | 24.36M |
| Payments to Acquire Property, Plant, and Equipment | 12.46M | 7.18M | 28.84M | 14.00M | 4.74M | 7.57M |
| Net Cash Provided by (Used in) Investing Activities | -25.80M | 8.83M | -69.20M | -50.81M | -22.43M | 5.77M |
| Net Cash Provided by (Used in) Financing Activities | -5.03M | -4.59M | -2.37M | -1.45M | -1.55M | -5.38M |
Raw XBRL tagging for a single filing
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Methodology
All facts on this page come straight from SEC EDGAR XBRL
company-facts filings (CSTL CIK 0001447362),
grouped by financial statement using FASB's base
us-gaap presentation taxonomy. Filers may re-parent
concepts onto different statements in their own extension
taxonomy, so a handful of rows can show up under a different
statement than on the actual 10-K / 10-Q; custom concepts and
any we couldn't map fall into Other. Hover a
cell to see the fully-qualified concept name and the filer's
description.
For the full methodology — statement grouping, the Other bucket, derived metrics, and fact tooltips — see the methodology reference for the statement grouping, the "Other" bucket, derived metrics, and fact tooltips.