CSTL
Castle Biosciences Inc
NASDAQ: CSTL · HEALTHCARE · DIAGNOSTICS & RESEARCH
$24.49
+1.03% today
Updated 2026-04-30
Market cap
$734.37M
P/E ratio
—
P/S ratio
2.13x
EPS (TTM)
$-0.83
Dividend yield
—
52W range
$15 – $44
Volume
0.4M
Castle Biosciences Inc (CSTL) Financial statements
SEC filings — annual and quarterly data.
Income statement — annual
| Item | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|
| Revenue | $13.75M | $22.79M | $51.87M | $62.65M | $94.08M | $137.04M | $219.79M | $332.07M | $344.23M |
| Revenue growth (YoY) | — | +65.7% | +127.6% | +20.8% | +50.2% | +45.7% | +60.4% | +51.1% | +3.7% |
| Cost of revenue | $4.92M | $5.30M | $7.31M | $9.69M | $15.82M | $32.01M | $44.98M | $60.20M | $107.88M |
| Gross profit | $8.83M | $17.49M | $44.55M | $52.96M | $78.26M | $105.03M | $174.81M | $271.86M | $236.35M |
| Gross margin | 64.2% | 76.8% | 85.9% | 84.5% | 83.2% | 76.6% | 79.5% | 81.9% | 68.7% |
| R&D | $4.47M | $4.85M | $7.38M | $13.26M | $29.65M | $44.90M | $53.62M | $52.04M | $51.85M |
| SG&A | $15.26M | $16.47M | $29.84M | $48.13M | $86.74M | $56.40M | $66.50M | $76.58M | $229.32M |
| Operating income | $-10.90M | $-3.84M | $7.33M | $-6.54M | $-40.08M | $-72.86M | $-67.98M | $8.67M | $-42.81M |
| Operating margin | -79.2% | -16.8% | 14.1% | -10.4% | -42.6% | -53.2% | -30.9% | 2.6% | -12.4% |
| EBITDA | $-10.40M | $-3.76M | $10.28M | $-7.09M | $-36.60M | $-58.34M | $-45.02M | $38.14M | $11.34M |
| EBITDA margin | -75.6% | -16.5% | 19.8% | -11.3% | -38.9% | -42.6% | -20.5% | 11.5% | 3.3% |
| EBIT | $-10.71M | $-4.08M | $9.92M | $-7.57M | $-40.01M | $-68.89M | $-57.35M | $22.14M | $-29.43M |
| Interest expense | $1.65M | $2.27M | $4.57M | $2.63M | $1000.00 | $17000.00 | $11000.00 | $577000.00 | $86000.00 |
| Income tax | — | — | — | — | — | — | — | — | — |
| Effective tax rate | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% |
| Net income | $-12.37M | $-6.37M | $5.28M | $-10.28M | $-31.29M | $-67.14M | $-57.47M | $18.25M | $-24.16M |
| Net income growth (YoY) | — | +48.5% | +182.9% | -294.9% | -204.3% | -114.6% | +14.4% | +131.7% | -232.4% |
| Profit margin | -89.9% | -27.9% | 10.2% | -16.4% | -33.3% | -49.0% | -26.1% | 5.5% | -7.0% |