美股A股
StockGist
Back
10-Q2026-05-06· deepseek-chat

CSTL · Castle Biosciences, Inc.

0001628280-26-031263

SEC filing

Summary

Revenue declined 4.9% to $83.7M, while operating loss improved 34.1% to -$18.4M, driven by lower amortization and cost management.

Key takeaways

Full analysis

Revenue Mix Shift: Dermatologic Decline vs. Non-Dermatologic Surge

Revenue for the first quarter of 2026 was $83.7 million, a decrease of 4.9% compared to $88.0 million in the same period last year. The decline was primarily driven by lower dermatologic test volumes, particularly for DecisionDx-SCC, following the loss of Medicare coverage. This was partially offset by growth in non-dermatologic tests, including TissueCypher, which benefited from increased sales force efforts. The mix shift toward higher-margin non-dermatologic tests supported gross margin, which remained strong at 75.5%.

Profitability Improvement: Amortization-Driven Margin Expansion

Cash Flow and Capital Allocation: Higher Burn on Capex and Working Capital

Net cash used in operating activities was -$22.1 million, compared to -$6.0 million in the prior year, driven by higher bonus payments and unfavorable working capital timing. Capital expenditures increased to $12.5 million from $4.7 million, primarily for lab expansion and new headquarters, resulting in free cash flow of -$34.6 million. The company continues to rely on its cash and marketable securities to fund operations and growth investments.

Outlook and Risks: DecisionDx-SCC Uncertainty and Continued Investment

Management expects cost of sales to increase as the company scales operations and launches new tests. Stock-based compensation will remain material. The loss of Medicare coverage for DecisionDx-SCC creates uncertainty for dermatologic revenue, while non-dermatologic growth, driven by TissueCypher, may offset some of the decline. The company's liquidity position remains adequate, but continued operating losses and capital expenditures may require additional financing.