CASTLE BIOSCIENCES, INC. (CSTL)

33.50USD -2.22% (-0.76)

Over 1M: +19.6%

2026-08-28
Style
Area Line Line with markers Steps Candles Hollow candles Bars

Candles need the day’s open, high and low. Those are being collected now — a company shows them once its history has been refreshed.

27.5 30 32.5 35
31 Jul 5 Aug 10 Aug 13 Aug 18 Aug 21 Aug 26 Aug

Financials Quarterly

Figures
Revenue Gross Profit Operating Income Cost of Revenue Operating Cash Flow Free Cash Flow Net Income

A share count and earnings a share are not here: neither is money, so neither can share this axis. Both have their own panel on All charts.

All charts ›
Q3 '21 — Operating Income: -11.8M Q3 '21 — Operating Cash Flow: -6.1M Q3 '21 — Free Cash Flow: -7.1M Q4 '21 — Operating Income: -15.2M Q4 '21 — Operating Cash Flow: -2.8M Q4 '21 — Free Cash Flow: -3.7M Q1 '22 — Operating Income: -24.5M Q1 '22 — Operating Cash Flow: -21.4M Q1 '22 — Free Cash Flow: -21.8M Q2 '22 — Operating Income: -4M Q2 '22 — Operating Cash Flow: -9M Q2 '22 — Free Cash Flow: -10.4M Q3 '22 — Operating Income: -21.5M Q3 '22 — Operating Cash Flow: -5.2M Q3 '22 — Free Cash Flow: -7.3M Q4 '22 — Operating Income: -22.8M Q4 '22 — Operating Cash Flow: -6M Q4 '22 — Free Cash Flow: -7.8M Q1 '23 — Operating Income: -31.5M Q1 '23 — Operating Cash Flow: -25.4M Q1 '23 — Free Cash Flow: -28.8M Q2 '23 — Operating Income: -21.2M Q2 '23 — Operating Cash Flow: -3.8M Q2 '23 — Free Cash Flow: -7.8M Q3 '23 — Operating Income: -9.6M Q3 '23 — Operating Cash Flow: 5M Q3 '23 — Free Cash Flow: 2.6M Q4 '23 — Operating Income: -5.7M Q4 '23 — Operating Cash Flow: 18.6M Q4 '23 — Free Cash Flow: 14.8M Q1 '24 — Operating Income: -5.5M Q1 '24 — Operating Cash Flow: -6.8M Q1 '24 — Free Cash Flow: -16M Q2 '24 — Operating Income: 5M Q2 '24 — Operating Cash Flow: 24M Q2 '24 — Free Cash Flow: 18.8M Q3 '24 — Operating Income: 5.1M Q3 '24 — Operating Cash Flow: 23.3M Q3 '24 — Free Cash Flow: 17M Q4 '24 — Operating Income: 4M Q4 '24 — Operating Cash Flow: 24.4M Q4 '24 — Free Cash Flow: 16.8M Q1 '25 — Operating Income: -27.9M Q1 '25 — Operating Cash Flow: -6M Q1 '25 — Free Cash Flow: -10.8M Q2 '25 — Operating Income: -4.3M Q2 '25 — Operating Cash Flow: 20.8M Q2 '25 — Free Cash Flow: 11.6M Q3 '25 — Operating Income: -6.8M Q3 '25 — Operating Cash Flow: 22.6M Q3 '25 — Free Cash Flow: 7.8M Q4 '25 — Operating Income: -3.8M Q4 '25 — Operating Cash Flow: 26.9M Q4 '25 — Free Cash Flow: 19.7M Q1 '26 — Operating Income: -18.4M Q1 '26 — Operating Cash Flow: -22.1M Q1 '26 — Free Cash Flow: -34.6M Q2 '26 — Operating Income: -3.1M Q2 '26 — Operating Cash Flow: 15.2M Q2 '26 — Free Cash Flow: 6.6M -30M -15M 0 15M 30M
Q4 '21 Q3 '22 Q2 '23 Q1 '24 Q4 '24 Q3 '25 Q2 '26
Operating Income Operating Cash Flow Free Cash Flow

Figures as at 2026-06-30, reported in USD. The newest fact in the filings is dated 2026-06-30, 62 days ago. Nothing on this page is advice.

How it scores

Five questions, each answered by the measures under it. Every figure is the company's own; the bar beside it is where that figure sits among the companies read here — the top fifth, the bottom fifth, or somewhere between. Not among all listed companies, and for a valuation multiple the low end is the good end.

Quality

How much of the revenue is really kept — and what did it take to earn it?

1.7
SBC / sales 12.6%
OE margin -12.7%
Oper. margin -9.0%
ROIC -11.4%
Accruals -11.1%
Gross margin 77.3%
OCF margin 11.9%
FCF margin -0.14%
ROA -3.5%
ROCE -6.4%
ROE -4.1%
OCF / EBIT —

5 of 17 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Valuation

What does the price ask for what the company earns, owns and pays out?

5.7
EV/Sales 2.2×
EV/OE -17.1×
P/C 3.9×
P/B 2.2×
FCF yield -0.048%
Div. yield —
EV/EBIT —
EV/GP —
Fwd P/E —
P/E —
PEG —

2 of 12 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Durability

How predictable is the revenue, and how much of it is already committed?

5.1
RPO / sales —
RPO growth —
Segment HHI —

3 of 7 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Resilience

Can the balance sheet absorb a bad year?

6.8
ND/EBITDA 0.32
Interest cover -85.6×
Cash / Debt 19.5×
Cash runway 504.4 yr
Debt / Eq 0.028×
Debt payback 0.0 yr
Quick ratio 5.8×
F-score 4.0 pts
Payout —

3 of 12 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Growth

Is the business getting bigger, and is it getting more profitable?

4.8
Sales CAGR 4Y +38.3%
Sales/sh Y/Y +4.1%
Shares change -0.92%
Sales Q/Q +20.1%
Div. growth —
EBIT CAGR —
EBIT Y/Y —
EPS CAGR 4Y —
EPS Y/Y —
EPS next Y —

4 of 13 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

A measure absent from a block could not be computed from this company's filings. It is left out rather than scored as though it were bad, and the dimension is averaged over what remains. A score is measured against a fixed scale this model states; the bar is measured against the other companies, so the two can disagree — and where they do, that disagreement is the more interesting figure.