Castle Biosciences, Inc. (CSTL)

NASDAQ: CSTL · Real-Time Price · USD

26.79

+2.33 (9.53%)

At close: Jul 30, 2026, 4:00 PM EDT

28.75

+1.96 (7.32%)

After-hours: Jul 30, 2026, 5:07 PM EDT

Castle Biosciences Financials Overview

Financials in millions USD. Fiscal year is January - December.

Millions USD. Fiscal year is Jan - Dec.

Revenue & Profits

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jun '26 Jun 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Revenue	357.28	344.23	332.07	219.79	137.04	94.09
Revenue Growth	3.18%	3.66%	51.09%	60.38%	45.65%	50.18%
Gross Profit	276.03	273.2	271.86	174.81	105.03	78.26
Operating Income	-32.11	-42.81	8.67	-67.98	-72.86	-40.08
Net Income	-19.61	-24.3	18.25	-57.47	-67.14	-48.73
Earnings Per Share	-0.66	-0.83	0.62	-2.14	-2.58	-1.24
EPS Growth	-	-	-	-	-	-

Fiscal Year	Current	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jun '26 Jun 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Cash & Investments	266.81	299.51	293.13	243.1	258.63	329.63
Total Debt	36.65	36.91	26.34	15.34	13.31	8.08
Net Cash (Debt)	230.16	262.59	266.79	227.76	245.32	321.55
Net Cash Growth	-3.53%	-1.57%	17.13%	-7.15%	-23.71%	-20.95%
Net Cash Per Share	7.76	9.06	9.12	8.50	9.42	12.79

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jun '26 Jun 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Operating Cash Flow	42.63	64.35	64.87	-5.63	-41.66	-18.98
Capital Expenditures	-43.12	-36.02	-28.33	-13.62	-5.63	-3.48
Free Cash Flow	-0.49	28.33	36.54	-19.25	-47.29	-22.47
Free Cash Flow Growth	-	-22.48%	-	-	-	-

Fiscal Year	TTM	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jun '26 Jun 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
Gross Margin	77.26%	79.37%	81.87%	79.53%	76.64%	83.18%
Operating Margin	-8.99%	-12.44%	2.61%	-30.93%	-53.16%	-42.60%
Pretax Margin	-5.43%	-8.62%	6.49%	-26.10%	-50.28%	-42.53%
Profit Margin	-5.49%	-7.06%	5.49%	-26.15%	-48.99%	-51.80%
FCF Margin	-0.14%	8.23%	11.00%	-8.76%	-34.51%	-23.88%

Fiscal Year	Current	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021
Period Ending	Jul '26 Jul 30, 2026	Dec '25 Dec 31, 2025	Dec '24 Dec 31, 2024	Dec '23 Dec 31, 2023	Dec '22 Dec 31, 2022	Dec '21 Dec 31, 2021
PE Ratio	-	-	42.98	-	-	-
P/FCF Ratio	179.84	40.77	20.77	-	-	-
PS Ratio	2.39	3.35	2.29	2.69	4.56	11.56