CASTLE BIOSCIENCES INC (CSTL)
Castle Biosciences, Inc. functions as a commercial-stage diagnostics firm, with its primary objective being the provision of both diagnostic and prognostic testing services, specifically targeting various dermatological cancers. Their flagship product, DecisionDx-Melanoma, represents an advanced multi-gene expression profile (GEP) assay engineered to assess the probability of metastasis in patients afflicted with invasive cutaneous melanoma. In addition to their leading solution, the company has created several other specialized, proprietary tests. Among these is DecisionDx-UM, a GEP test tailored to forecast the risk of metastasis for individuals with uveal melanoma, a less common malignancy of the eye. Another key offering is DecisionDx-SCC, a distinctive 40-gene expression profile test that utilizes a patient's unique tumor biology to predict their specific risk of squamous cell carcinoma metastasis, particularly for those presenting with recognized risk factors. Moreover, they offer DecisionDx DiffDx-Melanoma and myPath Melanoma, both proprietary GEP tests employed to assist in the accurate diagnosis of ambiguous pigmented lesions. These specialized testing services are provided by Castle Biosciences to patients predominantly through their healthcare providers. The organization commenced operations in 2007 and maintains its corporate headquarters in Friendswood, Texas.
Sector: Services-Medical Laboratories
Industry: Medical - Diagnostics & Research
Castle Biosciences, Inc.
NASDAQ:CSTLHealthcare · Medical - Diagnostics & Research
-3.51%$37.16
AH$37.16+0.00%vs close
Mkt Cap$1.14B
Float28.56M
O/S30.55M
Vol
$ Vol
RVOL
Inst Own89.6%
SI7.1%
Earnings
Dilution
Financials Summary
Revenue$344.23M
Net Income-$24.16M
Total Assets$578.56M
Free Cash Flow$28.33M
Debt & Equity
Debt 7%
Equity 93%
Total Debt$36.91M
Total Equity$470.87M
Shares Outstanding
Short Interest
Split History
No splits on record
Nothing in CSTL's public trading history: no forward or reverse split has affected the share count.
Balance Sheet Details
Assets$578.56M
Liabilities$107.68M
Accounts Receivable$43.38M
Accounts Payable$18.71M
Inventory$10.25M
PP&E (Net)$112.24M
Goodwill$10.69M
Intangible Assets$88.88M
Income Statement
| Period | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Currency | USD | USD | USD | USD | USD | USD | USD | USD | USD |
| Period Ending | 2025-12-31 | 2024-12-31 | 2023-12-31 | 2022-12-31 | 2021-12-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Revenue | $344.23M | $332.07M | $219.79M | $137.04M | $94.08M | $62.65M | $51.87M | $22.79M | $13.75M |
| YoY Growth | 3.7% | 51.1% | 60.4% | 45.7% | 50.2% | 20.8% | 127.6% | 65.7% | - |
| Cost of Revenue | $71.03M | $60.2M | $44.98M | $32.01M | $15.82M | $9.69M | $7.31M | $5.3M | $4.92M |
| Gross Profit | $273.2M | $271.86M | $174.81M | $105.03M | $78.26M | $52.96M | $44.55M | $17.49M | $8.83M |
| Gross Margin | 79.4% | 81.9% | 79.5% | 76.6% | 83.2% | 84.5% | 85.9% | 76.8% | 64.2% |
| Research and Development | $51.85M | $52.04M | $53.62M | $44.9M | $29.65M | $13.26M | $7.38M | $4.85M | $4.47M |
| Selling, General, and Administrative | $229.32M | $200.05M | $180.15M | $143M | $86.74M | $48.13M | $29.84M | $16.47M | $15.26M |
| Other | $34.84M | $11.11M | $9.01M | -$10.02M | $1.96M | -$1.88M | $0 | $0 | $163K |
| Total Operating Expenses | $316.01M | $263.19M | $242.78M | $177.88M | $118.34M | $59.51M | $37.23M | $21.32M | $19.73M |
| Operating Income (EBIT) | -$42.81M | $8.67M | -$67.98M | -$72.86M | -$40.08M | -$6.54M | $7.33M | -$3.84M | -$10.9M |
| Operating Margin | -12.4% | 2.6% | -30.9% | -53.2% | -42.6% | -10.4% | 14.1% | -16.8% | -79.2% |
| Interest Expense | $86K | $577K | $11K | $17K | $1K | $2.63M | $4.57M | $2.27M | $1.65M |
| Interest Income | $11.77M | $12.92M | $10.62M | $3.97M | $68K | $373K | $312K | $24K | $26K |
| Other Income (Expense) | $13.3M | $12.89M | $10.61M | $3.95M | $67K | -$3.66M | -$1.98M | -$2.52M | -$1.46M |
| Income Before Tax (EBT) | -$29.51M | $21.56M | -$57.37M | -$68.9M | -$40.01M | -$10.2M | $5.35M | -$6.36M | -$12.36M |
| Income Tax Expense | -$5.36M | $3.32M | $101K | -$1.77M | -$8.72M | $84K | $72K | $9K | $10K |
| Net Income | -$24.16M | $18.25M | -$57.47M | -$67.14M | -$31.29M | -$10.28M | $5.28M | -$6.37M | -$12.37M |
| Net Income Margin | -7.0% | 5.5% | -26.1% | -49.0% | -33.3% | -16.4% | 10.2% | -27.9% | -89.9% |
| Supplementary Data | |||||||||
| EPS | -0.83 | 0.66 | -2.14 | -2.58 | -1.24 | -0.54 | 0.35 | -0.60 | -1.26 |
| Diluted EPS | -0.83 | 0.62 | -2.14 | -2.58 | -1.24 | -0.54 | -0.21 | -0.60 | -1.26 |
| Weighted Average OS | 28.99M | 27.78M | 26.80M | 26.05M | 25.14M | 18.93M | 8.58M | 10.65M | 9.78M |
| EBITDA | $11.34M | $38.14M | -$45.02M | -$58.34M | -$36.6M | -$7.09M | $10.28M | -$3.76M | -$10.4M |
| EBITDA Margin | 3.3% | 11.5% | -20.5% | -42.6% | -38.9% | -11.3% | 19.8% | -16.5% | -75.6% |
Balance Sheet
| Period | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Currency | USD | USD | USD | USD | USD | USD | USD | USD | USD |
| Period Ending | 2025-12-31 | 2024-12-31 | 2023-12-31 | 2022-12-31 | 2021-12-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Assets | |||||||||
| Current Assets | |||||||||
| Cash and Cash Equivalents | $116.73M | $119.71M | $98.84M | $122.95M | $329.63M | $409.85M | $98.84M | $4.48M | $1.21M |
| Short-Term Investments | $182.78M | $173.42M | $144.26M | $135.68M | $0 | $0 | $0 | $0 | $0 |
| Cash and Short-Term Investments | $299.5M | $293.13M | $243.1M | $258.63M | $329.63M | $409.85M | $98.84M | $4.48M | $1.21M |
| Accounts Receivable | $43.38M | $51.22M | $38.3M | $23.48M | $17.28M | $12.76M | $14.65M | $12.09M | $4.65M |
| Inventory | $10.25M | $8.13M | $7.94M | $3.98M | $2.02M | $2.22M | $1.24M | $882K | $305K |
| Other Current Assets | $7.96M | $7.67M | $6.29M | $6.21M | $0 | $0 | $0 | $0 | $0 |
| Total Current Assets | $361.1M | $360.15M | $295.63M | $292.29M | $353.74M | $429.59M | $116.68M | $18.13M | $6.68M |
| Long-Term Assets | |||||||||
| Property, Plant & Equipment Net | $112.24M | $62.71M | $37.74M | $26.5M | $16.88M | $7.1M | $2.06M | $1.53M | $1.47M |
| Goodwill | $10.69M | $10.69M | $10.69M | $10.69M | $0 | $0 | $0 | $0 | $0 |
| Intangible Assets | $88.88M | $95.54M | $106.64M | $115.66M | $88.92M | $0 | $0 | $4K | $40K |
| Long-Term Investments | $0 | $0 | $0 | $0 | $1.31M | $0 | $0 | $2.53M | $1.56M |
| Deferred Tax Assets | $0 | $0 | $0 | $0 | $0 | $0 | $0 | -$2.53M | -$1.56M |
| Other Long-Term Assets | $5.65M | $2.15M | $2.63M | $2.2M | $1.72M | $2.63M | $1M | $2.75M | $1.63M |
| Total Long-Term Assets | $217.46M | $171.08M | $157.71M | $155.04M | $108.83M | $9.73M | $3.06M | $4.28M | $3.14M |
| Other Assets | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Total Assets | $578.56M | $531.24M | $453.34M | $447.33M | $462.57M | $439.33M | $119.75M | $22.4M | $9.82M |
| Liabilities | |||||||||
| Current Liabilities | |||||||||
| Accounts Payable | $18.71M | $6.9M | $10.27M | $4.73M | $2.55M | $2.1M | $1.86M | $1.45M | $1.12M |
| Short-Term Debt | $417K | $278K | $0 | $0 | $0 | $0 | $5.83M | $0 | $1M |
| Current Income Tax Payable | $0 | $1.08M | $0 | $37K | $695K | $276K | $79K | $9K | $10K |
| Current Unearned Revenue | $0 | $0 | $0 | $0 | $0 | $6.62M | $0 | $0 | $10K |
| Other Current Liabilities | $42.34M | $774K | $30.69M | $25.67M | $16.91M | $10M | $6M | $707K | $0 |
| Total Current Liabilities | $68.68M | $49.39M | $47.67M | $36.13M | $24.89M | $20.88M | $15.29M | $6.74M | $5.22M |
| Long-Term Liabilities | |||||||||
| Long-Term Debt | $9.64M | $9.74M | $0 | $0 | $0 | $0 | $19.29M | $24.5M | $17.6M |
| Long-Term Unearned Revenue | $0 | $0 | $0 | $0 | $0 | $1.74M | $0 | $0 | $0 |
| Long-Term Deferred Tax Liabilities | $2.33M | $1.61M | $206K | $428K | $635K | $0 | $0 | $0 | $0 |
| Other Long-Term Liabilities | $1.5M | $0 | $0 | $0 | $18.29M | $1.03M | $55K | $1.24M | $1.27M |
| Total Long-Term Liabilities | $39.01M | $26.01M | $14.4M | $12.05M | $25.95M | $2.76M | $19.34M | $25.74M | $18.87M |
| Other Liabilities | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Total Liabilities | $107.68M | $75.4M | $62.07M | $48.18M | $50.83M | $23.64M | $34.63M | $32.47M | $24.09M |
| Stockholders' Equity | |||||||||
| Preferred Stock | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $46.5M | $36.04M |
| Common Stock | $30K | $28K | $27K | $27K | $25K | $25K | $17K | $2K | $2K |
| Retained Earnings | -$224.28M | -$200.13M | -$218.37M | -$160.91M | -$93.77M | -$62.5M | -$52.21M | -$57.49M | -$51.12M |
| Comprehensive Income & Other | $267K | $230K | $136K | -$381K | $0 | $0 | $0 | -$909K | -$638K |
| Other Stockholders' Equity | $695.13M | $655.93M | $609.61M | $560.03M | $505.48M | $478.16M | $137.31M | $47.42M | $36.85M |
| Total Equity | $470.87M | $455.83M | $391.27M | $399.15M | $411.74M | $415.69M | $85.11M | -$10.07M | -$14.27M |
| Minority Interest | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Total Liabilities and Equity | $578.56M | $531.24M | $453.34M | $447.33M | $462.57M | $439.33M | $119.75M | $22.4M | $9.82M |
| Supplementary Data | |||||||||
| Total Debt | $36.91M | $26.34M | $15.34M | $13.4M | $8.2M | $0 | $25.12M | $24.5M | $18.6M |
| Net Debt | -$79.82M | -$93.36M | -$83.51M | -$109.55M | -$321.43M | -$409.85M | -$73.72M | $20.02M | $17.39M |
Cash Flow Statement
| Period | FY 2025 | FY 2024 | FY 2023 | FY 2022 | FY 2021 | FY 2020 | FY 2019 | FY 2018 | FY 2017 |
|---|---|---|---|---|---|---|---|---|---|
| Currency | USD | USD | USD | USD | USD | USD | USD | USD | USD |
| Period Ending | 2025-12-31 | 2024-12-31 | 2023-12-31 | 2022-12-31 | 2021-12-31 | 2020-12-31 | 2019-12-31 | 2018-12-31 | 2017-12-31 |
| Operating Activities | |||||||||
| Net Income | -$24.16M | $18.25M | -$57.47M | -$67.14M | -$31.29M | -$10.28M | $5.28M | -$6.37M | -$12.37M |
| Depreciation & Amortization | $40.77M | $16M | $12.33M | $10.54M | $3.41M | $472K | $358K | $323K | $311K |
| Deferred Income Tax | -$6.23M | $1.4M | -$223K | -$1.88M | -$8.74M | $0 | -$2.28M | $272K | -$163K |
| Stock-Based Compensation | $45.89M | $50.32M | $51.22M | $36.32M | $21.74M | $8.31M | $1.25M | $294K | $109K |
| Changes in Working Capital: | |||||||||
| Accounts Receivable | $6.88M | -$12.64M | -$14.93M | -$6.22M | -$4.63M | $1.66M | -$896K | -$8.41M | -$428K |
| Inventory | -$2.14M | -$193K | -$3.96M | -$1.68M | $327K | -$980K | -$355K | -$578K | -$116K |
| Accounts Payable | $3.08M | -$4.37M | $5.71M | $582K | -$182K | $169K | $557K | $197K | $371K |
| Other Working Capital | $5.79M | $3.08M | $6.55M | $7.31M | $384K | $8.3M | $738K | $1.43M | -$468K |
| Total Working Capital Change | $13.6M | -$14.13M | -$6.63M | -$7K | -$4.1M | $9.15M | $44K | -$7.36M | -$641K |
| Other Non-Cash Items | -$5.53M | -$6.97M | -$4.86M | -$19.5M | $0 | $2.22M | $2.37M | $542K | $520K |
| Net Cash from Operating | $64.35M | $64.87M | -$5.63M | -$41.66M | -$18.98M | $9.87M | $7.01M | -$12.29M | -$12.23M |
| Investing Activities | |||||||||
| Capital Expenditures | -$36.02M | -$28.33M | -$13.62M | -$5.63M | -$3.48M | -$4.75M | -$937K | -$277K | -$495K |
| Acquisitions | -$18.73M | $18K | $0 | -$26.97M | -$63.18M | $0 | $0 | $0 | $0 |
| Purchases of Investments | -$188.71M | -$205.73M | -$189.07M | -$134.69M | $0 | $0 | $0 | $0 | $0 |
| Sales of Investments | $190.73M | $183.9M | $186.5M | $0 | $0 | $0 | $0 | $0 | $0 |
| Other Investing Activities | -$7.64M | $0 | $13K | $742K | $10K | $3K | $0 | $0 | $0 |
| Net Cash from Investing | -$60.37M | -$50.14M | -$16.18M | -$166.54M | -$66.66M | -$4.75M | -$937K | -$277K | -$495K |
| Financing Activities | |||||||||
| Debt Repaid | $115K | -$9.9M | $142K | $122K | $8K | $27.36M | $15K | -$5.42M | -$8.57M |
| Common Stock Issuance | $2.21M | $2.02M | $0 | $0 | $0 | $330.04M | $65.93M | $10.42M | $293K |
| Common Stock Repurchases | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Dividends Paid | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Other Financing Activities | -$9.05M | -$5.78M | -$2.16M | $1.64M | $5.43M | $3.21M | $1.39M | $0 | $4K |
| Net Cash from Financing | -$6.96M | $6.14M | -$2.3M | $1.51M | $5.42M | $305.89M | $88.29M | $15.84M | $8.87M |
| Forex Effect | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Net Change in Cash | -$2.98M | $20.87M | -$24.11M | -$206.69M | -$80.22M | $311.01M | $94.37M | $3.27M | -$3.86M |
| Supplementary Data | |||||||||
| Operating Cash Flow | $64.35M | $64.87M | -$5.63M | -$41.66M | -$18.98M | $9.87M | $7.01M | -$12.29M | -$12.23M |
| Capital Expenditure | -$36.02M | -$28.33M | -$13.62M | -$5.63M | -$3.48M | -$4.75M | -$937K | -$277K | -$495K |
| Free Cash Flow | $28.33M | $36.54M | -$19.25M | -$47.29M | -$22.47M | $5.11M | $6.08M | -$12.57M | -$12.73M |
| Cash at Beginning | $119.71M | $98.84M | $122.95M | $329.63M | $409.85M | $98.84M | $4.48M | $1.21M | $5.07M |
| Cash at End | $116.73M | $119.71M | $98.84M | $122.95M | $329.63M | $409.85M | $98.84M | $4.48M | $1.21M |