NASDAQ : CSTL
Castle Biosciences, Inc. — Financial statements
Healthcare · Diagnostics & Research · United States
Last price 38.51 USD (Oct 29, 2026, 4:00 PM EDT) · Market cap 1.18B
Overview · Financial statements · Key statistics · Dividends · Company profile · Price history · Reports
Financial statements
Castle Biosciences, Inc. (CSTL) reported revenue of 357.28M USD (TTM). Five years of income statement, balance sheet, cash flow and ratios below.
Income statement
Fiscal year January - December; amounts in USD.
| TTM | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|---|
| Revenue | 357.28M | 344.23M | 332.07M | 219.79M | 137.04M | 94.08M |
| Cost of Revenue | 81.25M | 71.03M | 60.20M | 44.98M | 32.01M | 15.82M |
| Gross Profit | 276.03M | 273.20M | 271.86M | 174.81M | 105.03M | 78.26M |
| Selling, General & Admin | 243.66M | 229.32M | 200.05M | 180.15M | 143.00M | 86.74M |
| Research & Development | 55.45M | 51.85M | 52.04M | 53.62M | 44.90M | 29.65M |
| Amortization of Goodwill & Intangibles | 14.74M | 11.11M | 9.01M | 8.27M | 1.96M | |
| Operating Expenses | 288.03M | 295.91M | 263.19M | 242.78M | 196.17M | 118.34M |
| Operating Income | -12.01M | -22.71M | 8.67M | -67.98M | -91.14M | -40.08M |
| Interest Expense | -375.00K | -86.00K | -577.00K | -11.00K | -17.00K | -1.00K |
| Interest & Investment Income | 10.63M | 11.77M | 12.92M | 10.62M | 3.97M | 68.00K |
| Currency Exchange Gain (Loss) | 144.00K | 144.00K | ||||
| Other Non Operating Income (Expenses) | -592.00K | |||||
| EBT Excluding Unusual Items | -2.20M | -10.88M | 21.01M | -57.37M | -87.19M | -40.01M |
| Gain (Loss) on Sale of Investments | 3.10M | 1.47M | 555.00K | |||
| Asset Writedown | -20.10M | -20.10M | ||||
| Other Unusual Items | 18.29M | |||||
| Pretax Income | -19.20M | -29.51M | 21.56M | -57.37M | -68.90M | -40.01M |
| Income Tax Expense | 212.00K | -5.36M | 3.32M | 101.00K | -1.77M | -8.72M |
| Net Income | -19.41M | -24.16M | 18.25M | -57.47M | -67.14M | -31.29M |
| Net Income to Common | -19.41M | -24.16M | 18.25M | -57.47M | -67.14M | -31.29M |
| Shares Outstanding (Basic) | 29.68M | 28.99M | 27.78M | 26.80M | 26.05M | 25.14M |
| Shares Outstanding (Diluted) | 29.68M | 28.99M | 29.25M | 26.80M | 26.05M | 25.14M |
| EPS (Basic) | -0.65 | -0.83 | 0.66 | -2.14 | -2.58 | -1.24 |
| EPS (Diluted) | -0.65 | -0.83 | 0.62 | -2.14 | -2.58 | -1.24 |
| Free Cash Flow | -489.00K | 28.33M | 36.54M | -19.25M | -47.29M | -22.47M |
| Free Cash Flow Per Share | -0.02 | 0.98 | 1.25 | -0.72 | -1.81 | -0.89 |
| Gross Margin | 77.26% | 79.37% | 81.87% | 79.53% | 76.64% | 83.18% |
| Operating Margin | -3.36% | -6.60% | 2.61% | -30.93% | -66.51% | -42.60% |
| Profit Margin | -5.43% | -7.02% | 5.49% | -26.15% | -48.99% | -33.26% |
| Free Cash Flow Margin | -0.14% | 8.23% | 11.00% | -8.76% | -34.51% | -23.88% |
| EBITDA | -16.52M | -2.04M | 24.67M | -55.65M | -80.60M | -36.67M |
| EBITDA Margin | -4.62% | -0.59% | 7.43% | -25.32% | -58.81% | -38.98% |
| D&A For EBITDA | -4.51M | 20.67M | 16.00M | 12.33M | 10.54M | 3.41M |
| EBIT | -12.01M | -22.71M | 8.67M | -67.98M | -91.14M | -40.08M |
| EBIT Margin | -3.36% | -6.60% | 2.61% | -30.93% | -66.51% | -42.60% |
| Effective Tax Rate | 15.39% |
Balance sheet
Fiscal year January - December; amounts in USD.
| TTM | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|---|
| Cash & Equivalents | 62.12M | 116.73M | 119.71M | 98.84M | 122.95M | 329.63M |
| Short-Term Investments | 204.69M | 182.78M | 173.42M | 144.26M | 135.68M | |
| Cash & Short-Term Investments | 266.81M | 299.50M | 293.13M | 243.10M | 258.62M | 329.63M |
| Accounts Receivable | 48.34M | 43.38M | 51.22M | 38.30M | 23.48M | 17.28M |
| Other Receivables | 1.40M | 1.10M | 600.00K | |||
| Receivables | 49.74M | 44.48M | 51.82M | 38.30M | 23.48M | 17.28M |
| Inventory | 10.58M | 10.25M | 8.13M | 7.94M | 3.98M | 2.02M |
| Prepaid Expenses | 13.97M | 6.86M | 7.07M | 6.29M | 6.21M | 4.81M |
| Total Current Assets | 341.10M | 361.10M | 360.15M | 295.63M | 292.29M | 353.74M |
| Property, Plant & Equipment | 118.88M | 112.24M | 62.71M | 37.74M | 26.50M | 16.88M |
| Goodwill | 10.69M | 10.69M | 10.69M | 10.69M | 10.69M | |
| Other Intangible Assets | 84.40M | 88.88M | 95.54M | 106.64M | 115.66M | 88.92M |
| Other Long-Term Assets | 6.10M | 5.65M | 2.15M | 2.63M | 2.20M | 3.02M |
| Total Assets | 561.18M | 578.56M | 531.24M | 453.34M | 447.33M | 462.57M |
| Accounts Payable | 9.67M | 18.71M | 6.90M | 10.27M | 4.73M | 2.55M |
| Accrued Expenses | 34.41M | 45.10M | 38.70M | 35.26M | 29.20M | 20.50M |
| Current Portion of Long-Term Debt | 2.92M | 417.00K | 278.00K | |||
| Current Portion of Leases | 1.42M | 1.43M | 1.77M | 1.21M | 1.93M | 1.28M |
| Current Income Taxes Payable | 401.00K | |||||
| Other Current Liabilities | 8.09M | 3.02M | 1.75M | 535.00K | 267.00K | 558.00K |
| Total Current Liabilities | 56.51M | 68.68M | 49.39M | 47.67M | 36.13M | 24.89M |
| Long-Term Debt | 7.16M | 9.64M | 9.74M | |||
| Long-Term Leases | 25.16M | 25.53M | 14.66M | 14.20M | 11.62M | 7.02M |
| Long-Term Deferred Tax Liabilities | 2.32M | 2.33M | 1.61M | 206.00K | 428.00K | 635.00K |
| Other Long-Term Liabilities | 1.50M | 18.29M | ||||
| Total Liabilities | 91.15M | 107.68M | 75.40M | 62.07M | 48.18M | 50.83M |
| Common Stock | 31.00K | 30.00K | 28.00K | 27.00K | 27.00K | 25.00K |
| Additional Paid-In Capital | 711.12M | 694.86M | 655.70M | 609.48M | 560.41M | 505.48M |
| Retained Earnings | -240.87M | -224.28M | -200.13M | -218.37M | -160.91M | -93.77M |
| Comprehensive Income & Other | -256.00K | 267.00K | 230.00K | 136.00K | -381.00K | |
| Total Common Equity | 470.03M | 470.87M | 455.83M | 391.27M | 399.15M | 411.74M |
| Shareholders' Equity | 470.03M | 470.87M | 455.83M | 391.27M | 399.15M | 411.74M |
| Total Liabilities & Equity | 561.18M | 578.56M | 531.24M | 453.34M | 447.33M | 462.57M |
| Total Debt | 36.65M | 37.02M | 26.45M | 15.41M | 13.55M | 8.31M |
| Net Cash (Debt) | 230.16M | 262.49M | 266.69M | 227.69M | 245.08M | 321.32M |
| Net Cash Per Share | 7.75 | 9.06 | 9.12 | 8.50 | 9.41 | 12.78 |
| Filing Date Shares Outstanding | 30.55M | 29.73M | 28.51M | 27.45M | 26.58M | 25.41M |
| Total Common Shares Outstanding | 30.51M | 29.69M | 28.48M | 27.41M | 26.55M | 25.38M |
| Working Capital | 284.59M | 292.42M | 310.76M | 247.97M | 256.16M | 328.86M |
| Book Value Per Share | 15.41 | 15.86 | 16.00 | 14.27 | 15.03 | 16.22 |
| Tangible Book Value | 374.93M | 371.30M | 349.61M | 273.93M | 272.80M | 322.82M |
| Tangible Book Value Per Share | 12.29 | 12.51 | 12.27 | 9.99 | 10.27 | 12.72 |
| Land | 7.25M | 7.25M | 7.25M | |||
| Machinery | 47.13M | 42.60M | 32.48M | 22.92M | 15.35M | 7.47M |
| Construction In Progress | 12.58M | 51.06M | 9.61M | 637.00K | 1.27M | 27.00K |
| Leasehold Improvements | 14.91M | 14.83M | 14.62M | 9.99M | 5.17M | 5.04M |
Cash flow statement
Fiscal year January - December; amounts in USD.
| TTM | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|---|
| Net Income | -19.41M | -24.16M | 18.25M | -57.47M | -67.14M | -31.29M |
| Depreciation & Amortization | -4.51M | 20.67M | 16.00M | 12.33M | 10.54M | 3.41M |
| Asset Writedown & Restructuring Costs | 20.10M | 20.10M | ||||
| Loss (Gain) From Sale of Investments | -5.56M | -5.68M | -7.24M | -5.49M | -1.37M | |
| Stock-Based Compensation | 44.87M | 45.89M | 50.32M | 51.22M | 36.32M | 21.74M |
| Other Operating Activities | -103.00K | -6.08M | 1.67M | 412.00K | -20.01M | -8.74M |
| Change in Accounts Receivable | 3.44M | 6.88M | -12.64M | -14.93M | -6.22M | -4.63M |
| Change in Inventory | -2.24M | -2.14M | -193.00K | -3.96M | -1.68M | 327.00K |
| Change in Accounts Payable | 2.27M | 3.08M | -4.37M | 5.71M | 582.00K | -182.00K |
| Change in Other Net Operating Assets | 3.77M | 5.79M | 3.08M | 6.55M | 7.31M | 384.00K |
| Operating Cash Flow | 42.63M | 64.35M | 64.87M | -5.63M | -41.66M | -18.98M |
| Capital Expenditures | -43.12M | -36.02M | -28.33M | -13.62M | -5.63M | -3.48M |
| Sale of Property, Plant & Equipment | 37.00K | 45.00K | 18.00K | 13.00K | 195.00K | 10.00K |
| Cash Acquisitions | -1.00K | -18.73M | -26.42M | -63.18M | ||
| Investment in Securities | -6.12M | -3.55M | -21.83M | -2.58M | -134.69M | |
| Investing Cash Flow | -51.32M | -60.37M | -50.14M | -16.18M | -166.54M | -66.66M |
| Long-Term Debt Issued | 10.00M | |||||
| Total Debt Issued | 10.00M | |||||
| Long-Term Debt Repaid | -115.00K | -97.00K | -142.00K | -122.00K | -8.00K | |
| Total Debt Repaid | -106.00K | -115.00K | -97.00K | -142.00K | -122.00K | -8.00K |
| Net Debt Issued (Repaid) | -106.00K | -115.00K | 9.90M | -142.00K | -122.00K | -8.00K |
| Issuance of Common Stock | 5.62M | 4.62M | 5.00M | 2.98M | 3.33M | 6.55M |
| Repurchase of Common Stock | -15.94M | -11.66M | -8.76M | -5.13M | -1.69M | -781.00K |
| Other Financing Activities | -1.00M | 190.00K | -336.00K | |||
| Financing Cash Flow | -11.43M | -6.96M | 6.14M | -2.30M | 1.51M | 5.42M |
| Net Cash Flow | -20.12M | -2.98M | 20.87M | -24.11M | -206.69M | -80.22M |
| Free Cash Flow | -489.00K | 28.33M | 36.54M | -19.25M | -47.29M | -22.47M |
| Free Cash Flow Margin | -0.14% | 8.23% | 11.00% | -8.76% | -34.51% | -23.88% |
| Free Cash Flow Per Share | -0.02 | 0.98 | 1.25 | -0.72 | -1.81 | -0.89 |
| Levered Free Cash Flow | -7.26M | 41.21M | 29.45M | 818.50K | -14.69M | -5.03M |
| Unlevered Free Cash Flow | -7.02M | 41.27M | 29.81M | 825.38K | -14.68M | -5.03M |
| Cash Interest Paid | 59.00K | 59.00K | 434.00K | 11.00K | 16.00K | 1.00K |
| Cash Income Tax Paid | 1.60M | 1.60M | 2.50M | 198.00K | 120.00K | 16.00K |
| Change in Working Capital | 7.25M | 13.60M | -14.12M | -6.63M | -7.00K | -4.10M |
Ratios
Fiscal year January - December; amounts in USD.
| TTM | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | |
|---|---|---|---|---|---|---|
| Market Capitalization | 1.07B | 1.14B | 746.39M | 580.73M | 620.32M | 1.10B |
| Enterprise Value | 835.72M | 885.04M | 493.35M | 365.54M | 367.89M | 739.86M |
| Last Close Price | 37.16 | 38.90 | 26.65 | 21.58 | 23.54 | 42.87 |
| PE Ratio | 40.91 | |||||
| PS Ratio | 3.01 | 3.30 | 2.25 | 2.64 | 4.53 | 11.72 |
| PB Ratio | 2.41 | 2.41 | 1.64 | 1.48 | 1.55 | 2.68 |
| P/TBV Ratio | 2.87 | 3.06 | 2.13 | 2.12 | 2.27 | 3.42 |
| P/FCF Ratio | 40.09 | 20.43 | ||||
| P/OCF Ratio | 25.24 | 17.65 | 11.51 | |||
| EV/Sales Ratio | 2.37 | 2.57 | 1.49 | 1.66 | 2.69 | 7.86 |
| EV/EBITDA Ratio | 20.00 | |||||
| EV/EBIT Ratio | 56.90 | |||||
| EV/FCF Ratio | 31.25 | 13.50 | ||||
| Debt / Equity Ratio | 0.08 | 0.08 | 0.06 | 0.04 | 0.03 | 0.02 |
| Debt / EBITDA Ratio | 18.82 | 0.96 | ||||
| Debt / FCF Ratio | 1.31 | 0.72 | ||||
| Net Debt / Equity Ratio | -0.49 | -0.56 | -0.58 | -0.58 | -0.61 | -0.78 |
| Net Debt / EBITDA Ratio | 13.94 | 128.74 | -10.81 | 4.09 | 3.04 | 8.76 |
| Net Debt / FCF Ratio | 470.67 | -9.27 | -7.30 | 11.83 | 5.18 | 14.30 |
| Asset Turnover | 0.65 | 0.62 | 0.68 | 0.49 | 0.30 | 0.21 |
| Inventory Turnover | 8.58 | 7.72 | 7.49 | 7.55 | 10.67 | 7.47 |
| Quick Ratio | 5.60 | 5.01 | 6.98 | 5.90 | 7.81 | 13.94 |
| Current Ratio | 6.04 | 5.26 | 7.29 | 6.20 | 8.09 | 14.21 |
| Return on Equity (ROE) | -4.20% | -5.21% | 4.31% | -14.54% | -16.56% | -7.56% |
| Return on Assets (ROA) | -1.36% | -2.56% | 1.10% | -9.43% | -12.52% | -5.56% |
| Return on Invested Capital (ROIC) | -5.04% | -11.43% | 4.16% | -42.80% | -74.56% | -44.33% |
| Return on Capital Employed (ROCE) | -2.40% | -4.50% | 1.80% | -16.80% | -22.20% | -9.20% |
| Earnings Yield | -1.88% | -2.13% | 2.44% | -9.89% | -10.82% | -2.84% |
| FCF Yield | -0.05% | 2.50% | 4.90% | -3.31% | -7.62% | -2.04% |
| Buyback Yield / Dilution | -4.60% | 0.92% | -9.15% | -2.87% | -3.65% | -32.80% |