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Buy Day today: Neutral (51) Mixed market breadth · no major macro event
CSTL

Castle Biosciences Inc

Healthcare · Diagnostics & Research

35.30$ -3.9% vs. previous close Closing price · As of: Sep 18, 2026

Statements

Ratios

Valuation ratios (P/E, P/S, EV/EBITDA and the other multiples) are based on the closing price at the end of each period, not on the current price. Margins and returns are shown in percent, multiples without a unit, per-share figures in the reporting currency, net debt in millions.

Tick rows to compare them in a chart (up to 4)

Ratios CSTL
Line item 2017 2018 2019 2020 2021 2022 2023 2024 2025
Valuation
56.4 42.8
5.7 20.3 11.5 4.5 2.6 2.4 3.3
3.5 3.1 2.6 1.5 1.5 1.7 2.4
4.3 13.9 8.0 3.6 2.2 2.0 3.0
21.8 17.6 90.1
49.0 248.7 21.4 39.8
2.0% 0.4% -2.1% -7.7% -3.3% 4.7% 2.5%
Margins
64.2% 76.8% 85.9% 84.5% 83.2% 76.6% 79.5% 81.9% 79.4%
-79.2% -16.8% 14.1% -10.4% -42.6% -53.2% -30.9% 2.6% -12.4%
-89.9% -27.9% 10.2% -16.4% -33.3% -49.0% -26.1% 5.5% -7.0%
-92.5% -55.2% 11.7% 8.2% -23.9% -34.5% -8.8% 11.0% 8.2%
Returns
6.2% -2.5% -7.6% -16.8% -14.7% 4.0% -5.1%
-126.0% -28.4% 4.4% -2.3% -6.8% -15.0% -12.7% 3.4% -4.2%
Balance Sheet & Debt
17 20 -74 -404 -328 -121 -98 -108 -105
-7.2 -2.8 -9.3
-145.3% -44.9% 71.1% 94.6% 89.0% 89.2% 86.3% 85.8% 81.4%
0.3 0.0 0.0 0.0 0.0 0.0 0.0
Per Share
-1.26 -0.60 0.61 -0.54 -1.24 -2.58 -2.14 0.62 -0.83
1.41 2.14 5.99 3.31 3.74 5.26 8.20 11.35 11.88
-1.46 -0.95 9.83 21.96 16.38 15.32 14.60 15.58 16.24
-1.30 -1.18 0.70 0.27 -0.89 -1.81 -0.72 1.25 0.98

Data as of: September 18, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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