BeStock  

Castle Biosciences CSTL

US equityMarket cap rank #3235Diagnostics & Research
$33.00 −$0.36 (-1.08%)
Pre-market · Oct 8, 9:00 am ET · After hours $33.00 0.00%
Open$33.15
Prev close$33.36
Day range$32.77 – $33.72
Volume351.5K
Market cap$1.01B
P/E (TTM)–
Dividend yield–

Fundamentals

Latest reported quarter: Q2, ended Jun 2026

Revenue$103.55M+20.1% YoY
Operating profit-$3.07M+27.8% YoY
Net profit-$2.06M-145.5% YoY
Diluted EPS-$0.07-146.7% YoY
Free cash flow$6.55M-43.3% YoY
Operating cash flow$15.20M

Revenue, last 8 quarters

$85.8MSep '24$86.3MDec '24$88.0MMar '25$86.2MJun '25$83.0MSep '25$87.0MDec '25$83.7MMar '26$103.5MJun '26

Net profit, last 8 quarters

$2.3MSep '24$9.6MDec '24$-25.8MMar '25$4.5MJun '25$-501.0KSep '25$-2.3MDec '25$-14.5MMar '26$-2.1MJun '26

Diluted EPS by quarter

0.08Sep '240.32Dec '24-0.90Mar '250.15Jun '25-0.02Sep '25-0.08Dec '25-0.49Mar '26-0.07Jun '26

Free cash flow by quarter

$17.0MSep '24$16.8MDec '24$-10.8MMar '25$11.6MJun '25$7.8MSep '25$19.7MDec '25$-34.6MMar '26$6.6MJun '26

Annual revenue

$62.6MFY20$94.1MFY21$137.0MFY22$219.8MFY23$332.1MFY24$344.2MFY25

Profitability & balance sheet

Gross margin77.3%
Operating margin-9.0%
Net margin-5.4%
Return on equity-4.2%
Return on assets-3.5%
Return on invested capital-5.1%
Current ratio6.04
Liabilities / assets16.2%
Cash & investments$266.81M
Total debt$35.23M
Net cash (debt)$231.57M

Income statement

Line item 2026 Q2 2026 Q1 2025 ANNUAL 2025 Q4 2025 Q3
Total Revenue as Reported $103.55M $83.68M $344.23M $87.01M $83.04M
Total Operating Revenue $103.55M $83.68M $344.23M $87.01M $83.04M
Cost of Revenue $23.70M $20.53M $71.03M $18.32M $18.70M
Gross Profit $79.85M $63.15M $273.20M $68.70M $64.34M
Operating Expense $82.92M $81.55M $316.01M $72.52M $71.14M
Selling and Admin Expenses $66.12M $64.90M $229.32M $56.73M $55.91M
-Selling & Marketing Expense $40.92M $41.04M $138.12M $33.40M $32.79M
-General & Admin Expense $25.21M $23.86M $91.21M $23.33M $23.12M
Research & Development $14.54M $14.43M $51.85M $13.52M $12.96M
Depreciation & Amortization & Depletion $2.25M $2.23M $34.84M $2.28M $2.28M
-Depreciation & Amortization $2.25M $2.23M $34.84M $2.28M $2.28M
Operating Profit -$3.07M -$18.41M -$42.81M -$3.83M -$6.80M
Net Non-Operating Interest Income (Expense) $2.16M $2.41M $11.69M $2.87M $2.81M
Non-Operating Interest Income $2.36M $2.55M $11.77M $2.90M $2.83M
Non-Operating Interest Expense $193,000.00 $134,000.00 $86,000.00 $24,000.00 $24,000.00
Other Income (Expense) -$783,000.00 $1.58M $1.61M -$1.76M $3.61M
Gain on Sale of Security -$630,000.00 $2.02M $1.47M -$1.86M $3.56M
Other Non-Operating Income (Expenses) -$153,000.00 -$439,000.00 $144,000.00 $96,000.00 $48,000.00
Pretax Profit -$1.69M -$14.41M -$29.51M -$2.71M -$386,000.00
Tax $370,000.00 $109,000.00 -$5.36M -$382,000.00 $115,000.00
Net Profit -$2.06M -$14.52M -$24.16M -$2.33M -$501,000.00
Profit from Continuing Operations -$2.06M -$14.52M -$24.16M -$2.33M -$501,000.00
Net Income to Parent Company -$2.06M -$14.52M -$24.16M -$2.33M -$501,000.00
Net Income to Common Stockholders -$2.06M -$14.52M -$24.16M -$2.33M -$501,000.00
Basic EPS -$0.07 -$0.49 -$0.83 -$0.08 -$0.02
Diluted EPS -$0.07 -$0.49 -$0.83 -$0.08 -$0.02

Balance sheet

Line item 2026 Q2 2026 Q1 2025 ANNUAL 2025 Q4 2025 Q3
Total Assets $561.18M $547.81M $578.56M $578.56M $562.79M
Total Current Assets $341.10M $328.90M $361.10M $361.10M $357.57M
Cash and Cash Equivalents & Short-Term Investments $266.81M $261.69M $299.51M $299.51M $287.54M
-Cash and Cash Equivalents $62.12M $63.76M $116.73M $116.73M $85.56M
-Short Term Investments $204.69M $197.92M $182.78M $182.78M $201.99M
Receivables $48.34M $42.26M $43.38M $43.38M $49.48M
-Accounts Receivable $48.34M $42.26M $43.38M $43.38M $49.48M
Inventory $10.58M $10.46M $10.25M $10.25M $8.65M
Other Current Assets $15.37M $14.49M $7.96M $7.96M $11.90M
Total Non-Current Assets $220.08M $218.90M $217.46M $217.46M $205.22M
Net PPE $118.88M $115.36M $112.24M $112.24M $100.04M
-Gross PPE $140.52M $135.22M $130.54M $130.54M $116.88M
-Accumulated Depreciation -$21.64M -$19.86M -$18.30M -$18.30M -$16.84M
Non Current Accounts Receivables $1.66M $1.92M $1.88M $1.88M $2.05M
Goodwill and Other Intangible Assets $95.10M $97.35M $99.57M $99.57M $101.85M
-Goodwill $10.70M $10.70M $10.69M $10.69M $10.69M
-Other Intangible Assets $84.40M $86.65M $88.88M $88.88M $91.16M
Other Non-Current Assets $4.44M $4.28M $3.77M $3.77M $1.28M
Total Liabilities $91.15M $86.39M $107.68M $107.68M $95.74M
Total Current Liabilities $56.51M $48.76M $68.68M $68.68M $55.31M
Payables $14.26M $15.04M $18.71M $18.71M $13.46M
-Accounts Payable $9.67M $15.04M $18.71M $18.71M $12.21M
-Total Tax Payable $4.59M – – – $1.25M
Current Accrued Expenses $6.39M $6.73M $5.89M $5.89M $5.83M
Short-Term Debt and Capital Lease Obligation $4.33M $2.92M $1.74M $1.74M $1.45M
-Current Debt $2.92M $1.67M $417,000.00 $417,000.00 –
-Current Capital Lease Obligation $1.42M $1.25M $1.33M $1.33M $1.45M
Other Current Liabilities $3.50M $4.67M $3.13M $3.13M $2.60M
Total Non-Current Liabilities $34.64M $37.63M $39.01M $39.01M $40.43M
Long Term Debt and Capital Lease Obligation $32.32M $33.80M $35.17M $35.17M $35.69M
-Long Term Debt $7.16M $8.40M $9.64M $9.64M $10.05M
-Long Term Capital Lease Obligation $25.16M $25.40M $25.53M $25.53M $25.64M
Non-Current Deferred Liabilities $2.32M $2.33M $2.34M $2.34M $3.24M
Total Equity $470.03M $461.42M $470.87M $470.87M $467.05M
Stockholders' Equity $470.03M $461.42M $470.87M $470.87M $467.05M
Capital Stock $31,000.00 $30,000.00 $30,000.00 $30,000.00 $29,000.00
-Common Stock $31,000.00 $30,000.00 $30,000.00 $30,000.00 $29,000.00
-Preferred Stock $0.00 $0.00 $0.00 $0.00 $0.00
Additional Paid-In Capital $711.12M $700.26M $694.86M $694.86M $688.73M
Retained Earnings -$240.87M -$238.81M -$224.28M -$224.28M -$221.95M
Gains/Losses Not Affecting Retained Earnings -$256,000.00 -$63,000.00 $267,000.00 $267,000.00 $240,000.00
Other Non-Current Liabilities – $1.50M $1.50M $1.50M $1.50M

Cash flow

Line item 2026 Q2 2026 Q1 2025 ANNUAL 2025 Q4 2025 Q3
Operating Cash Flow $15.20M -$22.13M $64.35M $26.93M $22.63M
Net cash flow from continuing operations $15.20M -$22.13M $64.35M $26.93M $22.63M
Net Income from Continuing Operations -$2.06M -$14.52M -$24.16M -$2.33M -$501,000.00
Depreciation & Depletion & Amortization $4.07M $3.93M $40.77M $3.78M $3.82M
Deferred Tax -$3,000.00 -$10,000.00 -$6.23M -$907,000.00 $116,000.00
Other Non-Cash Items $235,000.00 $532,000.00 $153,000.00 -$129,000.00 $63,000.00
Change in Working Capital $1.13M -$19.36M $13.60M $13.97M $11.50M
-Change in Receivables -$5.82M $1.08M $6.88M $6.27M $1.91M
-Change in Inventory -$119,000.00 -$207,000.00 -$2.14M -$1.60M -$307,000.00
-Change in Prepaid Assets -$877,000.00 -$6.67M -$544,000.00 $3.99M $161,000.00
-Change in Payables and Accrued Expense $8.03M -$13.23M $9.68M $5.48M $9.62M
-Change in Other Current Assets -$30,000.00 -$159,000.00 $1.01M $44,000.00 $311,000.00
-Change in Other Current Liabilities -$59,000.00 -$172,000.00 -$1.28M -$209,000.00 -$197,000.00
Net cash flow from investing -$15.96M -$25.80M -$60.37M $8.83M -$18.39M
Net Cash Flow from Continuing Investing Activities -$15.96M -$25.80M -$60.37M $8.83M -$18.39M
Net PPE Purchase and Sale -$8.64M -$12.45M -$35.98M -$7.18M -$14.82M
Net Investment Purchase and Sale -$7.32M -$13.36M $2.02M $23.69M -$3.57M
Financing Cash Flow -$886,000.00 -$5.03M -$6.96M -$4.59M -$919,000.00
Net Cash Flow from Continuing Financing Activities -$886,000.00 -$5.03M -$6.96M -$4.59M -$919,000.00
Net Issuance Payments Of Debt -$24,000.00 -$24,000.00 $75,000.00 -$27,000.00 -$31,000.00
Proceeds from Stock Option Exercised $931,000.00 $1.59M $4.62M $2.81M $297,000.00
Net Other Financing Charges -$1.79M -$6.60M -$11.66M -$7.37M -$1.19M
Ending Cash Balance $62.12M $63.76M $116.73M $116.73M $85.56M
Net Change in Cash -$1.65M -$52.97M -$2.98M $31.17M $3.32M
Beginning Cash Balance $63.76M $116.73M $119.71M $85.56M $82.23M
Free Cash Flow $6.55M -$34.58M $28.33M $19.75M $7.80M
Gain/Loss from Continuing Operations – -$2.02M -$1.47M – –
Net Business Purchase and Sale – – -$18.73M – –
Net Other Investing Changes – – -$7.68M $11.04M –

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