8 years of revenue, profit, cash flow and balance-sheet history through FY2025, from SEC filings — with a computed, factual read of the trend. Updated Overview →
| FY | Revenue | Net income | Gross M | Op M | FCF | Total debt | Cash |
|---|---|---|---|---|---|---|---|
| 2025 | $344M | -$24M | 79.4% | -12.4% | $28M | $10M | $117M |
| 2024 | $332M | $18M | 81.9% | 2.6% | $37M | $10M | $120M |
| 2023 | $220M | -$57M | 79.5% | -30.9% | -$19M | $0 | $99M |
| 2022 | $137M | -$67M | 76.6% | -53.2% | -$47M | — | $123M |
| 2021 | $94M | -$31M | 83.2% | -42.6% | -$22M | — | $330M |
| 2020 | $63M | -$10M | 84.5% | -10.4% | $5M | $0 | $410M |
| 2019 | $52M | $5M | 85.9% | 14.1% | $6M | $27M | $99M |
| 2018 | $23M | -$6M | 76.8% | -16.8% | -$13M | $25M | $4M |
| Quarter | Revenue | Net income | Gross M | Op M | FCF | Total debt | Cash |
|---|---|---|---|---|---|---|---|
| Mar '26 | $84M | -$15M | 75.5% | -22.0% | -$35M | $10M | $64M |
| Dec '25 | $87M | -$2M | 79.0% | -4.4% | $20M | $10M | $117M |
| Sep '25 | $83M | -$501000 | 77.5% | -8.2% | $8M | $10M | $86M |
| Jun '25 | $86M | $5M | 79.5% | -4.9% | $12M | $10M | $82M |
| Mar '25 | $88M | -$26M | 81.4% | -31.7% | -$11M | $10M | $90M |
| Dec '24 | $86M | $10M | 81.3% | 4.7% | $17M | $10M | $120M |
| Sep '24 | $86M | $2M | 81.8% | 5.9% | $17M | $10M | $95M |
| Jun '24 | $87M | $9M | 83.3% | 5.8% | $19M | $10M | $86M |
| Mar '24 | $73M | -$3M | 81.0% | -7.5% | -$16M | $10M | $83M |
| Dec '23 | $66M | -$3M | 81.2% | -8.6% | $15M | $0 | $99M |
| Sep '23 | $61M | -$7M | 81.6% | -15.7% | $3M | — | $91M |
| Jun '23 | $50M | -$19M | 77.9% | -42.2% | -$8M | — | $96M |
| Mar '23 | $42M | -$29M | 75.8% | -75.0% | -$29M | $0 | $115M |
| Dec '22 | $38M | -$21M | 75.2% | -59.6% | -$8M | — | $123M |
| Sep '22 | $37M | -$20M | 76.1% | -58.2% | -$7M | — | $134M |
| Jun '22 | $35M | -$2M | 77.9% | -11.4% | -$10M | — | $273M |
| Mar '22 | $27M | -$25M | 77.9% | -91.3% | -$22M | — | $309M |
| Dec '21 | $25M | -$6M | 81.6% | -60.6% | -$4M | — | $330M |
| Sep '21 | $23M | -$12M | 80.8% | -50.3% | -$7M | — | $363M |
| Jun '21 | $23M | -$9M | 83.8% | -38.7% | -$7M | — | $368M |
How the market has priced CSTL against its own fundamentals since 2023-03 — each month-end's share price set against the most recent annual filing, so the multiple moves as price runs ahead of (or behind) earnings. Split-adjusted.
Over the past 5 years, CASTLE BIOSCIENCES INC's revenue has grown 40.6% per year. These are computed facts, not advice.
As of FY2025, CASTLE BIOSCIENCES INC reported $10M of total debt against $117M of cash; operating income covered interest expense -497.8×.
In FY2025, gross margin was 79.4%, operating margin -12.4%, and net margin -7.0%.
As of Jun '26, CASTLE BIOSCIENCES INC traded at a price-to-earnings ratio of about 69.8× (market cap ÷ latest annual net income). The valuation charts above show how its P/E, P/S have moved with the share price. These are computed facts, not advice.
All figures are extracted from the company’s SEC EDGAR/XBRL filings — 10-K annual reports and 10-Q quarterly reports (use the Annual / Quarterly toggle). Quarterly figures are derived from the as-filed statements (year-to-date amounts are differenced into discrete quarters). Growth rates and ratios are computed by tradmap; nothing here is investment advice.
Source: SEC EDGAR / XBRL (10-K + 10-Q filings) · prices EOD (Databento), corporate-action-adjusted · growth rates, valuation multiples & ratios computed by tradmap. Valuation uses each month-end price against the latest annual filing. Informational only — not investment advice.