CSTL CASTLE BIOSCIENCES INC

Overview and Growth

In fiscal 2025, CASTLE BIOSCIENCES INC recorded $344.23M of revenue, net loss of $24.16M, and an operating cash inflow of $64.35M. The $344.23M revenue base provides substantial context for the company’s earnings, cash generation, and capital requirements. Compared with $332.07M in fiscal 2024, revenue recorded a 3.7% year-over-year increase. The company reported diluted EPS of -$0.83, adding a shareholder-level measure to the absolute income figures considered below. Against diluted EPS of $0.62 in fiscal 2024, the current result was 233.9% lower. At period end, total assets were $578.56M, framing the scale of the company’s operating and financing commitments. Asset turnover was 0.59x, relating the company’s annual revenue directly to the total assets reported at the period end.

Profitability

After reported cost of revenue, the company retained $273.20M as gross profit before recognizing operating expenses and other items. The gross-profit relationship equaled 79.4% of revenue, quantifying the portion retained before operating expenses were recognized. The company recorded an operating loss of $42.81M after the reported operating expense base. An operating margin of -12.4% reflected costs exceeding revenue-level gross profit by 12.4% of sales. After all below-operating-line items, the company recorded a net loss of $24.16M for the fiscal year. Measured against revenue, the bottom-line deficit represented 7.0% after all recognized items. The company recognized an income-tax benefit of $5.36M, increasing after-tax earnings relative to the pretax result. The loss-to-equity relationship was 5.1%, placing the bottom-line deficit against shareholder capital. Relative to total assets, the net loss represented 4.2%.

Liquidity and Capital Structure

At period end, the $578.56M asset base was financed through $107.68M of liabilities and $470.87M of equity. At period end, current assets of $361.10M compared with current liabilities of $68.68M, defining the company’s short-term resource position. The current ratio was 5.26x, with current assets exceeding current liabilities and providing a short-term liquidity cushion. Reported cash and equivalents were $116.73M, separating immediately recognizable cash resources from the rest of the current-asset base. The cash balance equaled 170.0% of current liabilities, showing how much near-term coverage came from cash alone. Total debt was $10.06M, establishing the amount of borrowing carried within the company’s capital structure. Against book equity, debt measured 0.02x, placing the company’s financial leverage in clear balance-sheet terms. Debt represented 1.7% of total assets, placing borrowing in the context of the company’s full resource base. Relative to total assets, liabilities measured 18.6%, complementing the separate equity-based view of the company’s capital structure. Cash and equivalents equaled 20.2% of total assets, showing the liquid cash component within the company’s broader resource base. Compared with $531.24M in fiscal 2024, the current asset base moved 8.9% and finished higher. Against $455.83M of equity in fiscal 2024, the current book-equity balance moved 3.3% and ended higher. Cash and equivalents were 2.5% lower than fiscal 2024 cash of $119.71M, showing the year-over-year change in liquid resources.

Cash Flow and Earnings Quality

The company reported $64.35M of operating cash flow, a cash inflow that shows the cash generated by operations. The cash-flow statement records $36.02M of capital expenditures, the investment amount considered after operating cash generation. Relative to operating cash flow, capital expenditures measured 56.0%, connecting investment intensity with the company’s cash-generation base. The combination of operating cash flow and capital spending produced $28.33M of positive free cash flow for the period. Free cash flow represented 8.2% of revenue, linking post-investment cash generation with the company’s operating scale. Free cash flow equaled 4.9% of total assets, relating post-investment cash generation to the company’s resource base.

Based on the annual report for the fiscal year ending Dec 31, 2025. Analysis generated Sep 24, 2026.