Listed

Castle Biosciences Inc

CSTLNasdaqCIK 1447362HealthcareFiscal year ends Dec 31

Standardized line items from XBRL company facts, the last twelve quarters. Negative values are in parentheses. A figure marked d is derived from year-to-date figures.

Income statement

Revenue$103.5m, Q2 FY2026
Operating income−$3.1m, Q2 FY2026
Net income−$2.1m, Q2 FY2026
Castle Biosciences Inc, income statement, quarterly
Line itemUnitQ3 FY20232023-09-30Q4 FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Revenue$m61.5Revenue, Q3 FY2023, three months to 2023-09-30$61.5m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure66.1Revenue, Q4 FY2023, three months to 2023-12-31$66.1m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure73.0Revenue, Q1 FY2024, three months to 2024-03-31$73.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure87.0Revenue, Q2 FY2024, three months to 2024-06-30$87.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure85.8Revenue, Q3 FY2024, three months to 2024-09-30$85.8m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure86.3Revenue, Q4 FY2024, three months to 2024-12-31$86.3m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure88.0Revenue, Q1 FY2025, three months to 2025-03-31$88.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure86.2Revenue, Q2 FY2025, three months to 2025-06-30$86.2m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure83.0Revenue, Q3 FY2025, three months to 2025-09-30$83.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure87.0Revenue, Q4 FY2025, three months to 2025-12-31$87.0m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure83.7Revenue, Q1 FY2026, three months to 2026-03-31$83.7m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure104Revenue, Q2 FY2026, three months to 2026-06-30$103.5m. XBRL concept us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Cost of revenue$m11.3Cost of revenue, Q3 FY2023, three months to 2023-09-30$11.3m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure12.4Cost of revenue, Q4 FY2023, three months to 2023-12-31$12.4m. XBRL concept us-gaap:CostOfRevenue. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure13.9Cost of revenue, Q1 FY2024, three months to 2024-03-31$13.9m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure14.5Cost of revenue, Q2 FY2024, three months to 2024-06-30$14.5m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure15.6Cost of revenue, Q3 FY2024, three months to 2024-09-30$15.6m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure16.2Cost of revenue, Q4 FY2024, three months to 2024-12-31$16.2m. XBRL concept us-gaap:CostOfRevenue. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure16.4Cost of revenue, Q1 FY2025, three months to 2025-03-31$16.4m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure17.6Cost of revenue, Q2 FY2025, three months to 2025-06-30$17.6m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure18.7Cost of revenue, Q3 FY2025, three months to 2025-09-30$18.7m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure18.3Cost of revenue, Q4 FY2025, three months to 2025-12-31$18.3m. XBRL concept us-gaap:CostOfRevenue. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure20.5Cost of revenue, Q1 FY2026, three months to 2026-03-31$20.5m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure23.7Cost of revenue, Q2 FY2026, three months to 2026-06-30$23.7m. XBRL concept us-gaap:CostOfRevenue. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Gross profit$mnot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reported
Research and development$m12.9Research and development, Q3 FY2023, three months to 2023-09-30$12.9m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure13.0Research and development, Q4 FY2023, three months to 2023-12-31$13.0m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure13.8Research and development, Q1 FY2024, three months to 2024-03-31$13.8m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure14.1Research and development, Q2 FY2024, three months to 2024-06-30$14.1m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure12.3Research and development, Q3 FY2024, three months to 2024-09-30$12.3m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure11.8Research and development, Q4 FY2024, three months to 2024-12-31$11.8m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure12.6Research and development, Q1 FY2025, three months to 2025-03-31$12.6m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure12.8Research and development, Q2 FY2025, three months to 2025-06-30$12.8m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure13.0Research and development, Q3 FY2025, three months to 2025-09-30$13.0m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure13.5Research and development, Q4 FY2025, three months to 2025-12-31$13.5m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure14.4Research and development, Q1 FY2026, three months to 2026-03-31$14.4m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure14.5Research and development, Q2 FY2026, three months to 2026-06-30$14.5m. XBRL concept us-gaap:ResearchAndDevelopmentExpense. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Selling, general and administrative$m44.6Selling, general and administrative, Q3 FY2023, three months to 2023-09-30$44.6m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure44.1Selling, general and administrative, Q4 FY2023, three months to 2023-12-31$44.1m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure48.5Selling, general and administrative, Q1 FY2024, three months to 2024-03-31$48.5m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure51.1Selling, general and administrative, Q2 FY2024, three months to 2024-06-30$51.1m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure50.5Selling, general and administrative, Q3 FY2024, three months to 2024-09-30$50.5m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure50.0Selling, general and administrative, Q4 FY2024, three months to 2024-12-31$50.0m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure58.6Selling, general and administrative, Q1 FY2025, three months to 2025-03-31$58.6m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure58.1Selling, general and administrative, Q2 FY2025, three months to 2025-06-30$58.1m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure55.9Selling, general and administrative, Q3 FY2025, three months to 2025-09-30$55.9m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure56.7Selling, general and administrative, Q4 FY2025, three months to 2025-12-31$56.7m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure64.9Selling, general and administrative, Q1 FY2026, three months to 2026-03-31$64.9m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure66.1Selling, general and administrative, Q2 FY2026, three months to 2026-06-30$66.1m. XBRL concept us-gaap:SellingGeneralAndAdministrativeExpense. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Operating income$m(9.6)Operating income, Q3 FY2023, three months to 2023-09-30−$9.6m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure(5.7)Operating income, Q4 FY2023, three months to 2023-12-31−$5.7m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(5.5)Operating income, Q1 FY2024, three months to 2024-03-31−$5.5m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure5.0Operating income, Q2 FY2024, three months to 2024-06-30$5.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure5.1Operating income, Q3 FY2024, three months to 2024-09-30$5.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure4.1Operating income, Q4 FY2024, three months to 2024-12-31$4.0m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(27.9)Operating income, Q1 FY2025, three months to 2025-03-31−$27.9m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure(4.3)Operating income, Q2 FY2025, three months to 2025-06-30−$4.3m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure(6.8)Operating income, Q3 FY2025, three months to 2025-09-30−$6.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure(3.8)Operating income, Q4 FY2025, three months to 2025-12-31−$3.8m. XBRL concept us-gaap:OperatingIncomeLoss. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(18.4)Operating income, Q1 FY2026, three months to 2026-03-31−$18.4m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure(3.1)Operating income, Q2 FY2026, three months to 2026-06-30−$3.1m. XBRL concept us-gaap:OperatingIncomeLoss. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Interest expense$m0.0Interest expense, Q3 FY2023, three months to 2023-09-30$2.0k. XBRL concept us-gaap:InterestExpense. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure0.0Interest expense, Q4 FY2023, three months to 2023-12-31$2.0k. XBRL concept us-gaap:InterestExpense. 10-K filed 2024-02-28, accession 0001447362-24-000017. Derived: 12-month figure less the 9-month figure.Report this figure0.0Interest expense, Q1 FY2024, three months to 2024-03-31$12.0k. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure0.2Interest expense, Q2 FY2024, three months to 2024-06-30$216.0k. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure0.2Interest expense, Q3 FY2024, three months to 2024-09-30$192.0k. XBRL concept us-gaap:InterestExpense. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure0.2Interest expense, Q4 FY2024, three months to 2024-12-31$156.0k. XBRL concept us-gaap:InterestExpenseNonoperating. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure0.0Interest expense, Q1 FY2025, three months to 2025-03-31$8.0k. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure0.0Interest expense, Q2 FY2025, three months to 2025-06-30$9.0k. XBRL concept us-gaap:InterestExpense. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure0.0Interest expense, Q3 FY2025, three months to 2025-09-30$24.0k. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure0.0Interest expense, Q4 FY2025, three months to 2025-12-31$24.0k. XBRL concept us-gaap:InterestExpenseNonoperating. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure0.1Interest expense, Q1 FY2026, three months to 2026-03-31$134.0k. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure0.2Interest expense, Q2 FY2026, three months to 2026-06-30$193.0k. XBRL concept us-gaap:InterestExpenseNonoperating. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Income tax$m0.0Income tax, Q3 FY2023, three months to 2023-09-30$32.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure0.0Income tax, Q4 FY2023, three months to 2023-12-31$39.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure0.0Income tax, Q1 FY2024, three months to 2024-03-31$45.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure(1.0)Income tax, Q2 FY2024, three months to 2024-06-30−$1.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure6.0Income tax, Q3 FY2024, three months to 2024-09-30$6.0m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure(1.7)Income tax, Q4 FY2024, three months to 2024-12-31−$1.7m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(0.4)Income tax, Q1 FY2025, three months to 2025-03-31−$423.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure(4.7)Income tax, Q2 FY2025, three months to 2025-06-30−$4.7m. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure0.1Income tax, Q3 FY2025, three months to 2025-09-30$115.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure(0.4)Income tax, Q4 FY2025, three months to 2025-12-31−$382.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure0.1Income tax, Q1 FY2026, three months to 2026-03-31$109.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure0.4Income tax, Q2 FY2026, three months to 2026-06-30$370.0k. XBRL concept us-gaap:IncomeTaxExpenseBenefit. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Net income$m(6.9)Net income, Q3 FY2023, three months to 2023-09-30−$6.9m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure(2.6)Net income, Q4 FY2023, three months to 2023-12-31−$2.6m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(2.5)Net income, Q1 FY2024, three months to 2024-03-31−$2.5m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure8.9Net income, Q2 FY2024, three months to 2024-06-30$8.9m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure2.3Net income, Q3 FY2024, three months to 2024-09-30$2.3m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure9.6Net income, Q4 FY2024, three months to 2024-12-31$9.6m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(25.8)Net income, Q1 FY2025, three months to 2025-03-31−$25.8m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure4.5Net income, Q2 FY2025, three months to 2025-06-30$4.5m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure(0.5)Net income, Q3 FY2025, three months to 2025-09-30−$501.0k. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure(2.3)Net income, Q4 FY2025, three months to 2025-12-31−$2.3m. XBRL concept us-gaap:NetIncomeLoss. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(14.5)Net income, Q1 FY2026, three months to 2026-03-31−$14.5m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure(2.1)Net income, Q2 FY2026, three months to 2026-06-30−$2.1m. XBRL concept us-gaap:NetIncomeLoss. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Diluted EPS$ per share(0.26)Diluted EPS, Q3 FY2023, three months to 2023-09-30−$0.26 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figurenot reported(0.09)Diluted EPS, Q1 FY2024, three months to 2024-03-31−$0.09 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure0.31Diluted EPS, Q2 FY2024, three months to 2024-06-30$0.31 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure0.08Diluted EPS, Q3 FY2024, three months to 2024-09-30$0.08 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figurenot reported(0.90)Diluted EPS, Q1 FY2025, three months to 2025-03-31−$0.90 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure0.15Diluted EPS, Q2 FY2025, three months to 2025-06-30$0.15 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure(0.02)Diluted EPS, Q3 FY2025, three months to 2025-09-30−$0.02 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figurenot reported(0.49)Diluted EPS, Q1 FY2026, three months to 2026-03-31−$0.49 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure(0.07)Diluted EPS, Q2 FY2026, three months to 2026-06-30−$0.07 per share. XBRL concept us-gaap:EarningsPerShareDiluted. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Basic EPS$ per share(0.26)Basic EPS, Q3 FY2023, three months to 2023-09-30−$0.26 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figurenot reported(0.09)Basic EPS, Q1 FY2024, three months to 2024-03-31−$0.09 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure0.32Basic EPS, Q2 FY2024, three months to 2024-06-30$0.32 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure0.08Basic EPS, Q3 FY2024, three months to 2024-09-30$0.08 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figurenot reported(0.90)Basic EPS, Q1 FY2025, three months to 2025-03-31−$0.90 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure0.16Basic EPS, Q2 FY2025, three months to 2025-06-30$0.16 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure(0.02)Basic EPS, Q3 FY2025, three months to 2025-09-30−$0.02 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figurenot reported(0.49)Basic EPS, Q1 FY2026, three months to 2026-03-31−$0.49 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure(0.07)Basic EPS, Q2 FY2026, three months to 2026-06-30−$0.07 per share. XBRL concept us-gaap:EarningsPerShareBasic. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure

Balance sheet

Cash and equivalents$62.1m, Q2 FY2026
Long-term debt$7.2m, Q2 FY2026
Shareholders' equity$470.0m, Q2 FY2026
Castle Biosciences Inc, balance sheet, quarterly
Line itemUnitQ3 FY20232023-09-30FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Cash and equivalents$m91.2Cash and equivalents, Q3 FY2023, at 2023-09-30$91.2m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure98.8Cash and equivalents, FY2023, at 2023-12-31$98.8m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure82.9Cash and equivalents, Q1 FY2024, at 2024-03-31$82.9m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure85.6Cash and equivalents, Q2 FY2024, at 2024-06-30$85.6m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure95.0Cash and equivalents, Q3 FY2024, at 2024-09-30$95.0m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure120Cash and equivalents, FY2024, at 2024-12-31$119.7m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure89.7Cash and equivalents, Q1 FY2025, at 2025-03-31$89.7m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure82.2Cash and equivalents, Q2 FY2025, at 2025-06-30$82.2m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure85.6Cash and equivalents, Q3 FY2025, at 2025-09-30$85.6m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure117Cash and equivalents, FY2025, at 2025-12-31$116.7m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure63.8Cash and equivalents, Q1 FY2026, at 2026-03-31$63.8m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure62.1Cash and equivalents, Q2 FY2026, at 2026-06-30$62.1m. XBRL concept us-gaap:CashAndCashEquivalentsAtCarryingValue. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Current assets$m280Current assets, Q3 FY2023, at 2023-09-30$279.6m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure296Current assets, FY2023, at 2023-12-31$295.6m. XBRL concept us-gaap:AssetsCurrent. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure296Current assets, Q1 FY2024, at 2024-03-31$295.8m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure320Current assets, Q2 FY2024, at 2024-06-30$320.4m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure345Current assets, Q3 FY2024, at 2024-09-30$344.8m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure360Current assets, FY2024, at 2024-12-31$360.2m. XBRL concept us-gaap:AssetsCurrent. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure349Current assets, Q1 FY2025, at 2025-03-31$349.4m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure349Current assets, Q2 FY2025, at 2025-06-30$348.7m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure358Current assets, Q3 FY2025, at 2025-09-30$357.6m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure361Current assets, FY2025, at 2025-12-31$361.1m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure329Current assets, Q1 FY2026, at 2026-03-31$328.9m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure341Current assets, Q2 FY2026, at 2026-06-30$341.1m. XBRL concept us-gaap:AssetsCurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Total assets$m436Total assets, Q3 FY2023, at 2023-09-30$436.0m. XBRL concept us-gaap:Assets. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure453Total assets, FY2023, at 2023-12-31$453.3m. XBRL concept us-gaap:Assets. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure459Total assets, Q1 FY2024, at 2024-03-31$458.5m. XBRL concept us-gaap:Assets. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure487Total assets, Q2 FY2024, at 2024-06-30$487.3m. XBRL concept us-gaap:Assets. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure515Total assets, Q3 FY2024, at 2024-09-30$514.6m. XBRL concept us-gaap:Assets. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure531Total assets, FY2024, at 2024-12-31$531.2m. XBRL concept us-gaap:Assets. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure502Total assets, Q1 FY2025, at 2025-03-31$501.7m. XBRL concept us-gaap:Assets. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure545Total assets, Q2 FY2025, at 2025-06-30$544.7m. XBRL concept us-gaap:Assets. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure563Total assets, Q3 FY2025, at 2025-09-30$562.8m. XBRL concept us-gaap:Assets. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure579Total assets, FY2025, at 2025-12-31$578.6m. XBRL concept us-gaap:Assets. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure548Total assets, Q1 FY2026, at 2026-03-31$547.8m. XBRL concept us-gaap:Assets. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure561Total assets, Q2 FY2026, at 2026-06-30$561.2m. XBRL concept us-gaap:Assets. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Current liabilities$m36.3Current liabilities, Q3 FY2023, at 2023-09-30$36.3m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure47.7Current liabilities, FY2023, at 2023-12-31$47.7m. XBRL concept us-gaap:LiabilitiesCurrent. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure32.0Current liabilities, Q1 FY2024, at 2024-03-31$32.0m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure39.5Current liabilities, Q2 FY2024, at 2024-06-30$39.5m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure44.3Current liabilities, Q3 FY2024, at 2024-09-30$44.3m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure49.4Current liabilities, FY2024, at 2024-12-31$49.4m. XBRL concept us-gaap:LiabilitiesCurrent. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure37.3Current liabilities, Q1 FY2025, at 2025-03-31$37.3m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure50.9Current liabilities, Q2 FY2025, at 2025-06-30$50.9m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure55.3Current liabilities, Q3 FY2025, at 2025-09-30$55.3m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure68.7Current liabilities, FY2025, at 2025-12-31$68.7m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure48.8Current liabilities, Q1 FY2026, at 2026-03-31$48.8m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure56.5Current liabilities, Q2 FY2026, at 2026-06-30$56.5m. XBRL concept us-gaap:LiabilitiesCurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Total liabilities$m50.2Total liabilities, Q3 FY2023, at 2023-09-30$50.2m. XBRL concept us-gaap:Liabilities. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure62.1Total liabilities, FY2023, at 2023-12-31$62.1m. XBRL concept us-gaap:Liabilities. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure56.0Total liabilities, Q1 FY2024, at 2024-03-31$56.0m. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure63.4Total liabilities, Q2 FY2024, at 2024-06-30$63.4m. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure73.5Total liabilities, Q3 FY2024, at 2024-09-30$73.5m. XBRL concept us-gaap:Liabilities. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure75.4Total liabilities, FY2024, at 2024-12-31$75.4m. XBRL concept us-gaap:Liabilities. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure61.4Total liabilities, Q1 FY2025, at 2025-03-31$61.4m. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure89.4Total liabilities, Q2 FY2025, at 2025-06-30$89.4m. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure95.7Total liabilities, Q3 FY2025, at 2025-09-30$95.7m. XBRL concept us-gaap:Liabilities. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure108Total liabilities, FY2025, at 2025-12-31$107.7m. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure86.4Total liabilities, Q1 FY2026, at 2026-03-31$86.4m. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure91.1Total liabilities, Q2 FY2026, at 2026-06-30$91.1m. XBRL concept us-gaap:Liabilities. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Long-term debt$mnot reported0.0Long-term debt, FY2023, at 2023-12-31$0. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure10.0Long-term debt, Q1 FY2024, at 2024-03-31$10.0m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure10.0Long-term debt, Q2 FY2024, at 2024-06-30$10.0m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure10.0Long-term debt, Q3 FY2024, at 2024-09-30$10.0m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure9.7Long-term debt, FY2024, at 2024-12-31$9.7m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure8.9Long-term debt, Q1 FY2025, at 2025-03-31$8.9m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure8.1Long-term debt, Q2 FY2025, at 2025-06-30$8.1m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure10.0Long-term debt, Q3 FY2025, at 2025-09-30$10.0m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure9.6Long-term debt, FY2025, at 2025-12-31$9.6m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure8.4Long-term debt, Q1 FY2026, at 2026-03-31$8.4m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure7.2Long-term debt, Q2 FY2026, at 2026-06-30$7.2m. XBRL concept us-gaap:LongTermDebtNoncurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Current portion of debt$mnot reported0.0Current portion of debt, FY2023, at 2023-12-31$0. XBRL concept us-gaap:LongTermDebtCurrent. 10-K filed 2025-02-27, accession 0001447362-25-000031.Report this figure0.0Current portion of debt, Q1 FY2024, at 2024-03-31$0. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure0.0Current portion of debt, Q2 FY2024, at 2024-06-30$0. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure0.0Current portion of debt, Q3 FY2024, at 2024-09-30$0. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure0.3Current portion of debt, FY2024, at 2024-12-31$278.0k. XBRL concept us-gaap:LongTermDebtCurrent. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure1.1Current portion of debt, Q1 FY2025, at 2025-03-31$1.1m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure1.9Current portion of debt, Q2 FY2025, at 2025-06-30$1.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure0.0Current portion of debt, Q3 FY2025, at 2025-09-30$0. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure0.4Current portion of debt, FY2025, at 2025-12-31$417.0k. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure1.7Current portion of debt, Q1 FY2026, at 2026-03-31$1.7m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure2.9Current portion of debt, Q2 FY2026, at 2026-06-30$2.9m. XBRL concept us-gaap:LongTermDebtCurrent. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure
Short-term borrowings$mnot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reportednot reported
Shareholders' equity$m386Shareholders' equity, Q3 FY2023, at 2023-09-30$385.8m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure391Shareholders' equity, FY2023, at 2023-12-31$391.3m. XBRL concept us-gaap:StockholdersEquity. 10-K filed 2026-02-26, accession 0001628280-26-012272.Report this figure402Shareholders' equity, Q1 FY2024, at 2024-03-31$402.5m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure424Shareholders' equity, Q2 FY2024, at 2024-06-30$423.9m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure441Shareholders' equity, Q3 FY2024, at 2024-09-30$441.1m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure456Shareholders' equity, FY2024, at 2024-12-31$455.8m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure440Shareholders' equity, Q1 FY2025, at 2025-03-31$440.3m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure455Shareholders' equity, Q2 FY2025, at 2025-06-30$455.4m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure467Shareholders' equity, Q3 FY2025, at 2025-09-30$467.0m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure471Shareholders' equity, FY2025, at 2025-12-31$470.9m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure461Shareholders' equity, Q1 FY2026, at 2026-03-31$461.4m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure470Shareholders' equity, Q2 FY2026, at 2026-06-30$470.0m. XBRL concept us-gaap:StockholdersEquity. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure

Cash flow

Operating cash flow$15.2m, Q2 FY2026
Capital expenditure$8.7m, Q2 FY2026
Castle Biosciences Inc, cash flow, quarterly
Line itemUnitQ3 FY20232023-09-30Q4 FY20232023-12-31Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q4 FY20242024-12-31Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q4 FY20252025-12-31Q1 FY20262026-03-31Q2 FY20262026-06-30
Operating cash flow$m5.0Operating cash flow, Q3 FY2023, three months to 2023-09-30$5.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2024-11-04, accession 0001447362-24-000169. Derived: 9-month figure less the 6-month figure.Report this figure18.6Operating cash flow, Q4 FY2023, three months to 2023-12-31$18.6m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(6.8)Operating cash flow, Q1 FY2024, three months to 2024-03-31−$6.8m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure24.0Operating cash flow, Q2 FY2024, three months to 2024-06-30$24.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-08-04, accession 0001447362-25-000097. Derived: 6-month figure less the 3-month figure.Report this figure23.3Operating cash flow, Q3 FY2024, three months to 2024-09-30$23.3m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-03, accession 0001628280-25-048254. Derived: 9-month figure less the 6-month figure.Report this figure24.4Operating cash flow, Q4 FY2024, three months to 2024-12-31$24.4m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(6.0)Operating cash flow, Q1 FY2025, three months to 2025-03-31−$6.0m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure20.8Operating cash flow, Q2 FY2025, three months to 2025-06-30$20.8m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-07-30, accession 0001628280-26-051052. Derived: 6-month figure less the 3-month figure.Report this figure22.6Operating cash flow, Q3 FY2025, three months to 2025-09-30$22.6m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2025-11-03, accession 0001628280-25-048254. Derived: 9-month figure less the 6-month figure.Report this figure26.9Operating cash flow, Q4 FY2025, three months to 2025-12-31$26.9m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure(22.1)Operating cash flow, Q1 FY2026, three months to 2026-03-31−$22.1m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure15.2Operating cash flow, Q2 FY2026, three months to 2026-06-30$15.2m. XBRL concept us-gaap:NetCashProvidedByUsedInOperatingActivities. 10-Q filed 2026-07-30, accession 0001628280-26-051052. Derived: 6-month figure less the 3-month figure.Report this figure
Capital expenditure$m2.5Capital expenditure, Q3 FY2023, three months to 2023-09-30$2.5m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2024-11-04, accession 0001447362-24-000169. Derived: 9-month figure less the 6-month figure.Report this figure3.8Capital expenditure, Q4 FY2023, three months to 2023-12-31$3.8m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure9.2Capital expenditure, Q1 FY2024, three months to 2024-03-31$9.2m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure5.2Capital expenditure, Q2 FY2024, three months to 2024-06-30$5.2m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-08-04, accession 0001447362-25-000097. Derived: 6-month figure less the 3-month figure.Report this figure6.4Capital expenditure, Q3 FY2024, three months to 2024-09-30$6.4m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-03, accession 0001628280-25-048254. Derived: 9-month figure less the 6-month figure.Report this figure7.6Capital expenditure, Q4 FY2024, three months to 2024-12-31$7.6m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure4.7Capital expenditure, Q1 FY2025, three months to 2025-03-31$4.7m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure9.3Capital expenditure, Q2 FY2025, three months to 2025-06-30$9.3m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-07-30, accession 0001628280-26-051052. Derived: 6-month figure less the 3-month figure.Report this figure14.8Capital expenditure, Q3 FY2025, three months to 2025-09-30$14.8m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2025-11-03, accession 0001628280-25-048254. Derived: 9-month figure less the 6-month figure.Report this figure7.2Capital expenditure, Q4 FY2025, three months to 2025-12-31$7.2m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-K filed 2026-02-26, accession 0001628280-26-012272. Derived: 12-month figure less the 9-month figure.Report this figure12.5Capital expenditure, Q1 FY2026, three months to 2026-03-31$12.5m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure8.7Capital expenditure, Q2 FY2026, three months to 2026-06-30$8.7m. XBRL concept us-gaap:PaymentsToAcquirePropertyPlantAndEquipment. 10-Q filed 2026-07-30, accession 0001628280-26-051052. Derived: 6-month figure less the 3-month figure.Report this figure

Shares

Diluted shares (weighted)30.40m, Q2 FY2026
Castle Biosciences Inc, shares, quarterly
Line itemUnitQ3 FY20222022-09-30Q1 FY20232023-03-31Q2 FY20232023-06-30Q3 FY20232023-09-30Q1 FY20242024-03-31Q2 FY20242024-06-30Q3 FY20242024-09-30Q1 FY20252025-03-31Q2 FY20252025-06-30Q3 FY20252025-09-30Q1 FY20262026-03-31Q2 FY20262026-06-30
Diluted shares (weighted)m shares26.3Diluted shares (weighted), Q3 FY2022, three months to 2022-09-3026,316,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2023-11-02, accession 0001447362-23-000147.Report this figure26.6Diluted shares (weighted), Q1 FY2023, three months to 2023-03-3126,607,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-05-02, accession 0001447362-24-000060.Report this figure26.7Diluted shares (weighted), Q2 FY2023, three months to 2023-06-3026,733,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-08-05, accession 0001447362-24-000122.Report this figure26.8Diluted shares (weighted), Q3 FY2023, three months to 2023-09-3026,834,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2024-11-04, accession 0001447362-24-000169.Report this figure27.5Diluted shares (weighted), Q1 FY2024, three months to 2024-03-3127,485,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-05-05, accession 0001447362-25-000069.Report this figure28.7Diluted shares (weighted), Q2 FY2024, three months to 2024-06-3028,738,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-08-04, accession 0001447362-25-000097.Report this figure29.4Diluted shares (weighted), Q3 FY2024, three months to 2024-09-3029,401,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure28.6Diluted shares (weighted), Q1 FY2025, three months to 2025-03-3128,609,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure29.5Diluted shares (weighted), Q2 FY2025, three months to 2025-06-3029,545,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure29.1Diluted shares (weighted), Q3 FY2025, three months to 2025-09-3029,073,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2025-11-03, accession 0001628280-25-048254.Report this figure29.9Diluted shares (weighted), Q1 FY2026, three months to 2026-03-3129,889,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-05-06, accession 0001628280-26-031263.Report this figure30.4Diluted shares (weighted), Q2 FY2026, three months to 2026-06-3030,399,000 shares. XBRL concept us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure

Shares outstanding: 30.55mShares outstanding, period not labelled, at 2026-07-2330,549,507 shares. XBRL concept dei:EntityCommonStockSharesOutstanding. 10-Q filed 2026-07-30, accession 0001628280-26-051052.Report this figure at Jul 23, 2026, from the cover of the 10-Q filed Jul 30, 2026.

Source: SEC EDGAR, XBRL company facts. Last ingested by Listed: Oct 24, 2026, 15:40 ET. Listed shows no prices and gives no investment advice.