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CSTL

Castle Biosciences, Inc.

Price Chart
Latest Quote

$21.12

+0.87 (+4.30%)
Current Price
Previous Close $20.25
Open $20.39
Day High $21.15
Day Low $20.23
Volume 705,001
Fetched: 2026-06-20T04:49:58
Stock Information
Shares Outstanding 30.33M
Total Debt $36.72M
Cash Equivalents $261.68M
Revenue $339.92M
Net Income $-12.83M
Sector Healthcare
Industry Diagnostics & Research
Market Cap $640.57M
EPS (TTM) $-0.42
Exchange NGM
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📊 Comprehensive Analysis
Company Data
Enterprise Value$415.61M
Sales$339.92M
Income$-12.83M
Book/sh$15.23
Cash/sh$8.63
Employees942
Financial Ratios
Quick Ratio6.26
Current Ratio6.75
Debt/Eq7.96
Returns & Margins
ROA-3.96%
ROE-2.85%
Gross Margin77.88%
Operating Margin-22.00%
Profit Margin-3.78%
Ownership
Insider Ownership2.73%
Institutional Ownership92.99%
Insider & Institutional transactions data not available
Valuation Ratios
Forward P/E-22.71
P/S1.88
P/B1.39
Analyst Data
Recommendationnone
Target Price$44.00
Technical Indicators
SMA20$20.75
SMA50$21.92
SMA200$28.71
RSI50.27
ATR0.9216
Shares Float26.77M
Short Float5.01%
Short Ratio2.86
Volatility1.02
Rel Volume2.11
Performance History
Week+0.52%
Month+10.00%
Quarter-17.82%
6 Months-45.92%
YTD-45.20%
Year+13.92%
3 Years+46.16%
5 Years-70.62%
10 Years-1.31%
Stock Score: ⭐ Premium
Based on debt, profitability, growth, and cash flow metrics
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Recent Price History
Date Close Volume
2026-06-18 $21.12 726,600
2026-06-17 $20.25 310,400
2026-06-16 $20.46 380,200
2026-06-15 $20.66 220,500
2026-06-12 $20.70 154,600
2026-06-11 $21.01 215,200
2026-06-10 $21.08 245,600
2026-06-09 $21.08 289,500
2026-06-08 $20.12 248,000
2026-06-05 $21.01 212,500
2026-06-04 $21.60 293,300
2026-06-03 $20.39 516,600
2026-06-02 $19.71 459,800
2026-06-01 $20.97 312,100
2026-05-29 $21.08 358,600
2026-05-28 $22.11 299,800
2026-05-27 $21.26 626,000
2026-05-26 $19.69 401,900
2026-05-22 $20.15 289,300
2026-05-21 $20.54 327,300
2026-05-20 $20.03 425,100
2026-05-19 $19.20 343,500
About Castle Biosciences, Inc.

Castle Biosciences, Inc., a molecular diagnostics company, provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), atopic dermatitis (AD), and uveal melanoma. The company offers DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test that predicts the likelihood of a positive sentinel lymph node and the risk of metastasis for patients with invasive cutaneous melanoma; TissueCypher, a risk stratification spatialomics test to predict future development of high-grade dysplasia and/or esophageal cancer in patients with non-dysplastic, indefinite dysplasia, and low-grade dysplasia BE; AdvanceAD-Tx, a non-invasive GEP test which is designed to guide systemic treatment selection for patients aged 12 years and older with moderateto-severe AD; DecisionDx-SCC, a GEP test for cutaneous squamous cell carcinoma; and MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions. It also provides DecisionDx-UM, a risk stratification GEP test that predicts the risk of metastasis for patients with uveal melanoma. The company offers its products to dermatology and gastroenterology markets. The company was incorporated in 2007 and is headquartered in Friendswood, Texas.

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Income Statement (Annual)
Metric 2025-12-31 2024-12-31 2023-12-31 2022-12-31
Revenue
Reconciled Cost Of Revenue $65,095,000 $55,314,000 $41,665,000 $29,732,000
Cost Of Revenue $71,028,000 $60,205,000 $44,982,000 $32,009,000
Total Revenue $344,229,000 $332,069,000 $219,788,000 $137,039,000
Operating Revenue $344,229,000 $332,069,000 $219,788,000 $137,039,000
Expenses
Interest Expense $86,000 $577,000 $11,000 $17,000
Total Expenses $387,039,000 $323,399,000 $287,765,000 $228,181,000
Other Income Expense $1,610,000 $555,000 - $18,287,000
Other Non Operating Income Expenses $144,000 $555,000 - -
Net Non Operating Interest Income Expense $11,686,000 $12,339,000 $10,612,000 $3,951,000
Interest Expense Non Operating $86,000 $577,000 $11,000 $17,000
Operating Expense $316,011,000 $263,194,000 $242,783,000 $196,172,000
Selling And Marketing Expense $138,115,000 $123,467,000 $113,657,000 $86,607,000
General And Administrative Expense $91,208,000 $76,580,000 $66,495,000 $56,396,000
Income & Earnings
Net Income From Continuing Operation Net Minority Interest $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Net Interest Income $11,686,000 $12,339,000 $10,612,000 $3,951,000
Interest Income $11,772,000 $12,916,000 $10,623,000 $3,968,000
Normalized Income $-25,358,654 $17,775,422 $-57,466,000 $-84,956,307
Net Income From Continuing And Discontinued Operation $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Total Operating Income As Reported $-42,810,000 $8,670,000 $-67,977,000 $-72,855,000
Net Income Common Stockholders $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Net Income $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Net Income Including Noncontrolling Interests $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Net Income Continuous Operations $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Pretax Income $-29,514,000 $21,564,000 $-57,365,000 $-68,904,000
Interest Income Non Operating $11,772,000 $12,916,000 $10,623,000 $3,968,000
Operating Income $-42,810,000 $8,670,000 $-67,977,000 $-91,142,000
Depreciation Amortization Depletion Income Statement $34,838,000 $11,106,000 $9,013,000 $8,266,000
Depreciation And Amortization In Income Statement $34,838,000 $11,106,000 $9,013,000 $8,266,000
Amortization Of Intangibles Income Statement $34,838,000 $11,106,000 $9,013,000 $8,266,000
Gross Profit $273,201,000 $271,864,000 $174,806,000 $105,030,000
Special Income Charges - $0 $0 $18,287,000
Per Share
Diluted EPS $-0.83 $0.62 $-2.14 $-2.58
Basic EPS $-0.83 $0.66 $-2.14 $-2.58
Other
Tax Effect Of Unusual Items $265,346 $85,422 $0 $468,693
Tax Rate For Calcs $0 $0 $0 $0
Normalized EBITDA (Bullshit earnings) $9,877,000 $37,583,000 $-45,024,000 $-76,631,000
Total Unusual Items $1,466,000 $555,000 $0 $18,287,000
Total Unusual Items Excluding Goodwill $1,466,000 $555,000 $0 $18,287,000
Reconciled Depreciation $40,771,000 $15,997,000 $12,330,000 $10,543,000
EBITDA (Bullshit earnings) $11,343,000 $38,138,000 $-45,024,000 $-58,344,000
EBIT $-29,428,000 $22,141,000 $-57,354,000 $-68,887,000
Diluted Average Shares $28,986,000 $29,255,000 $26,802,000 $26,054,000
Basic Average Shares $28,986,000 $27,776,000 $26,802,000 $26,054,000
Diluted NI Availto Com Stockholders $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Tax Provision $-5,356,000 $3,319,000 $101,000 $-1,766,000
Gain On Sale Of Security $1,466,000 $555,000 - -
Amortization $34,838,000 $11,106,000 $9,013,000 $8,266,000
Research And Development $51,850,000 $52,041,000 $53,618,000 $44,903,000
Selling General And Administration $229,323,000 $200,047,000 $180,152,000 $143,003,000
Other Gand A $91,208,000 $76,580,000 $66,495,000 $56,396,000
Restructuring And Mergern Acquisition - $0 $0 $-18,287,000
Fetched: 2026-06-20
Balance Sheet (Annual)
Metric 2025-12-31 2024-12-31 2023-12-31 2022-12-31
Assets
Net Tangible Assets $371,299,000 $349,606,000 $273,934,000 $272,802,000
Total Assets $578,556,000 $531,235,000 $453,340,000 $447,329,000
Total Non Current Assets $217,459,000 $171,081,000 $157,705,000 $155,041,000
Other Non Current Assets $3,769,000 $1,228,000 $1,440,000 $1,110,000
Non Current Accounts Receivable $1,878,000 $918,000 $1,191,000 $1,087,000
Goodwill And Other Intangible Assets $99,574,000 $106,229,000 $117,335,000 $126,348,000
Other Intangible Assets $88,882,000 $95,537,000 $106,643,000 $115,656,000
Current Assets $361,097,000 $360,154,000 $295,635,000 $292,288,000
Other Current Assets $7,956,000 $7,671,000 $6,292,000 $6,207,000
Inventory $10,254,000 $8,135,000 $7,942,000 $3,980,000
Receivables $43,382,000 $51,218,000 $38,302,000 $23,476,000
Accounts Receivable $43,382,000 $51,218,000 $38,302,000 $23,476,000
Cash Cash Equivalents And Short Term Investments $299,505,000 $293,130,000 $243,099,000 $258,625,000
Cash And Cash Equivalents $116,729,000 $119,709,000 $98,841,000 $122,948,000
Prepaid Assets - - - -
Debt
Total Debt $36,913,000 $26,344,000 $15,335,000 $13,400,000
Long Term Debt And Capital Lease Obligation $35,171,000 $24,401,000 $14,198,000 $11,623,000
Long Term Debt $9,640,000 $9,745,000 - -
Current Debt And Capital Lease Obligation $1,742,000 $1,943,000 $1,137,000 $1,777,000
Current Debt $417,000 $278,000 - -
Other Current Borrowings $417,000 $278,000 - -
Liabilities
Total Liabilities Net Minority Interest $107,683,000 $75,400,000 $62,071,000 $48,179,000
Total Non Current Liabilities Net Minority Interest $39,006,000 $26,008,000 $14,404,000 $12,051,000
Other Non Current Liabilities $1,500,000 - - -
Non Current Deferred Liabilities $2,335,000 $1,607,000 $206,000 $428,000
Non Current Deferred Taxes Liabilities $2,335,000 $1,607,000 $206,000 $428,000
Current Liabilities $68,677,000 $49,392,000 $47,667,000 $36,128,000
Other Current Liabilities $3,126,000 $1,850,000 $606,000 $415,000
Payables And Accrued Expenses $24,598,000 $11,819,000 $16,083,000 $8,678,000
Payables $18,711,000 $6,901,000 $10,669,000 $4,731,000
Accounts Payable $18,711,000 $6,901,000 $10,268,000 $4,731,000
Total Tax Payable - $1,076,000 $401,000 $37,000
Current Deferred Liabilities - - - -
Equity
Common Stock Equity $470,873,000 $455,835,000 $391,269,000 $399,150,000
Total Equity Gross Minority Interest $470,873,000 $455,835,000 $391,269,000 $399,150,000
Stockholders Equity $470,873,000 $455,835,000 $391,269,000 $399,150,000
Gains Losses Not Affecting Retained Earnings $267,000 $230,000 $136,000 $-381,000
Other Equity Adjustments $267,000 $230,000 $136,000 $-381,000
Retained Earnings $-224,284,000 $-200,126,000 $-218,371,000 $-160,905,000
Other
Ordinary Shares Number $29,686,314 $28,483,195 $27,410,532 $26,553,681
Share Issued $29,686,314 $28,483,195 $27,410,532 $26,553,681
Tangible Book Value $371,299,000 $349,606,000 $273,934,000 $272,802,000
Invested Capital $480,930,000 $465,858,000 $391,269,000 $399,150,000
Working Capital $292,420,000 $310,762,000 $247,968,000 $256,160,000
Capital Lease Obligations $26,856,000 $16,321,000 $15,335,000 $13,400,000
Total Capitalization $480,513,000 $465,580,000 $391,269,000 $399,150,000
Additional Paid In Capital $694,860,000 $655,703,000 $609,477,000 $560,409,000
Capital Stock $30,000 $28,000 $27,000 $27,000
Common Stock $30,000 $28,000 $27,000 $27,000
Preferred Stock $0 $0 $0 $0
Long Term Capital Lease Obligation $25,531,000 $14,656,000 $14,198,000 $11,623,000
Current Capital Lease Obligation $1,325,000 $1,665,000 $1,137,000 $1,777,000
Pensionand Other Post Retirement Benefit Plans Current $39,211,000 $33,780,000 $29,841,000 $25,258,000
Current Accrued Expenses $5,887,000 $4,918,000 $5,414,000 $3,947,000
Goodwill $10,692,000 $10,692,000 $10,692,000 $10,692,000
Net PPE $112,238,000 $62,706,000 $37,739,000 $26,496,000
Accumulated Depreciation $-18,297,000 $-12,833,000 $-8,111,000 $-7,848,000
Gross PPE $130,535,000 $75,539,000 $45,850,000 $34,344,000
Leases $14,834,000 $14,616,000 $9,990,000 $5,171,000
Construction In Progress $51,059,000 $9,614,000 $637,000 $1,275,000
Other Properties $47,829,000 $35,217,000 $28,778,000 $21,902,000
Machinery Furniture Equipment $9,568,000 $8,847,000 $6,445,000 $5,996,000
Land And Improvements $7,245,000 $7,245,000 $0 -
Properties $0 $0 $0 $0
Other Short Term Investments $182,776,000 $173,421,000 $144,258,000 $135,677,000
Non Current Deferred Revenue - - - -
Current Deferred Revenue - - - -
Fetched: 2026-06-20
Cash Flow Statement (Annual)
Metric 2025-12-31 2024-12-31 2023-12-31 2022-12-31
Free Cash Flow
Free Cash Flow $28,326,000 $36,540,000 $-19,247,000 $-47,287,000
Operating Activities
Operating Cash Flow $64,347,000 $64,866,000 $-5,626,000 $-41,655,000
Cash Flow From Continuing Operating Activities $64,347,000 $64,866,000 $-5,626,000 $-41,655,000
Operating Gains Losses $-1,466,000 $-555,000 - -
Investing Activities
Capital Expenditure $-36,021,000 $-28,326,000 $-13,621,000 $-5,632,000
Investing Cash Flow $-60,367,000 $-50,137,000 $-16,183,000 $-166,545,000
Cash Flow From Continuing Investing Activities $-60,367,000 $-50,137,000 $-16,183,000 $-166,545,000
Net Other Investing Changes $-7,683,000 - - $547,000
Financing Activities
Financing Cash Flow $-6,960,000 $6,139,000 $-2,298,000 $1,515,000
Cash Flow From Continuing Financing Activities $-6,960,000 $6,139,000 $-2,298,000 $1,515,000
Net Other Financing Charges $-11,657,000 $-8,762,000 $-5,134,000 $-1,688,000
Issuance Of Capital Stock - - - -
Net Common Stock Issuance - - - -
Common Stock Issuance - - - -
Other
Repayment Of Debt $-115,000 $-97,000 $-142,000 $-122,000
Issuance Of Debt $190,000 $10,000,000 $0 $0
Interest Paid Supplemental Data $59,000 $434,000 $11,000 $16,000
Income Tax Paid Supplemental Data $1,601,000 $2,503,000 $198,000 $120,000
End Cash Position $116,729,000 $119,709,000 $98,841,000 $122,948,000
Beginning Cash Position $119,709,000 $98,841,000 $122,948,000 $329,633,000
Changes In Cash $-2,980,000 $20,868,000 $-24,107,000 $-206,685,000
Proceeds From Stock Option Exercised $4,622,000 $4,998,000 $2,978,000 $3,325,000
Net Issuance Payments Of Debt $75,000 $9,903,000 $-142,000 $-122,000
Net Long Term Debt Issuance $75,000 $9,903,000 $-142,000 $-122,000
Long Term Debt Payments $-115,000 $-97,000 $-142,000 $-122,000
Long Term Debt Issuance $190,000 $10,000,000 $0 $0
Net Investment Purchase And Sale $2,019,000 $-21,829,000 $-2,575,000 $-134,689,000
Sale Of Investment $190,733,000 $183,900,000 $186,500,000 $0
Purchase Of Investment $-188,714,000 $-205,729,000 $-189,075,000 $-134,689,000
Net Business Purchase And Sale $-18,727,000 $0 $0 $-26,966,000
Purchase Of Business $-18,727,000 $0 $0 $-26,966,000
Net PPE Purchase And Sale $-35,976,000 $-28,308,000 $-13,608,000 $-5,437,000
Sale Of PPE $45,000 $18,000 $13,000 $195,000
Purchase Of PPE $-36,021,000 $-28,326,000 $-13,621,000 $-5,632,000
Change In Working Capital $13,601,000 $-14,125,000 $-6,630,000 $-7,000
Change In Other Current Liabilities $-1,275,000 $-1,289,000 $852,000 $-608,000
Change In Other Current Assets $1,006,000 $1,584,000 $-588,000 $1,609,000
Change In Payables And Accrued Expense $9,680,000 $-442,000 $12,433,000 $8,114,000
Change In Accrued Expense $6,602,000 $3,930,000 $6,726,000 $7,532,000
Change In Payable $3,078,000 $-4,372,000 $5,707,000 $582,000
Change In Account Payable $3,078,000 $-4,372,000 $5,707,000 $582,000
Change In Prepaid Assets $-544,000 $-1,142,000 $-435,000 $-1,224,000
Change In Inventory $-2,142,000 $-193,000 $-3,962,000 $-1,680,000
Change In Receivables $6,876,000 $-12,643,000 $-14,930,000 $-6,218,000
Changes In Account Receivables $6,876,000 $-12,643,000 $-14,930,000 $-6,218,000
Other Non Cash Items $153,000 $268,000 $635,000 $-18,129,000
Stock Based Compensation $45,893,000 $50,320,000 $51,219,000 $36,321,000
Amortization Of Securities $-4,219,000 $-6,685,000 $-5,491,000 $-1,368,000
Deferred Tax $-6,228,000 $1,401,000 $-223,000 $-1,877,000
Deferred Income Tax $-6,228,000 $1,401,000 $-223,000 $-1,877,000
Depreciation Amortization Depletion $40,771,000 $15,997,000 $12,330,000 $10,543,000
Depreciation And Amortization $40,771,000 $15,997,000 $12,330,000 $10,543,000
Amortization Cash Flow $34,838,000 $11,106,000 $9,013,000 $8,266,000
Amortization Of Intangibles $34,838,000 $11,106,000 $9,013,000 $8,266,000
Depreciation $5,933,000 $4,891,000 $3,317,000 $2,278,000
Gain Loss On Investment Securities $-1,466,000 $-555,000 - -
Net Income From Continuing Operations $-24,158,000 $18,245,000 $-57,466,000 $-67,138,000
Change In Other Working Capital - - $4,587,000 $8,495,000
Fetched: 2026-06-20