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Research & education only — not financial advice.TENK is not a registered investment adviser; calls are impersonal, generated from SEC filings and a delayed/third-party price feed, and may be wrong or out of date. The operator and an affiliated trading operation may hold or trade the securities TENK rates — see Disclosures. Do your own research.

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TTENK/calls
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Home›CSTL›Financials
Annual statements · SEC XBRL · FY2018 – FY2025

CASTLE BIOSCIENCES INC (CSTL) financials

Income statement

CASTLE BIOSCIENCES INC (CSTL) income statement, annual, from SEC filings
Fiscal yearFY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Revenue$22.8M$51.9M$62.6M$94.1M$137M$220M$332M$344M
Revenue growth—127.6%20.8%50.2%45.7%60.4%51.1%3.7%
Gross profit$17.5M$44.6M$53.0M—————
Gross margin76.8%85.9%84.5%—————
Operating income-$3.84M$7.33M-$6.54M-$40.1M-$72.9M-$68.0M$8.67M-$42.8M
Operating margin-16.8%14.1%-10.4%-42.6%-53.2%-30.9%2.6%-12.4%
Net income-$6.37M$5.28M-$10.3M-$31.3M-$67.1M-$57.5M$18.2M-$24.2M
Net margin-27.9%10.2%-16.4%-33.3%-49.0%-26.1%5.5%-7.0%
EPS (diluted)-$5.33-$0.21-$0.54-$1.24-$2.58-$2.14$0.62-$0.83

Cash flow

CASTLE BIOSCIENCES INC (CSTL) cash flow, annual, from SEC filings
Fiscal yearFY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating cash flow-$12.3M$7.01M$9.87M-$19.0M-$41.7M-$5.63M$64.9M$64.3M
Capital expenditures$277K$937K$4.75M$3.48M$5.63M$13.6M$28.3M$36.0M
Free cash flow-$12.6M$6.08M$5.11M-$22.5M-$47.3M-$19.2M$36.5M$28.3M

Balance sheet

CASTLE BIOSCIENCES INC (CSTL) balance sheet, annual, from SEC filings
Fiscal yearFY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Cash & equivalents$4.48M$98.8M$410M$330M$123M$98.8M$120M$117M
Total assets$22.4M$120M$439M$463M$447M$453M$531M$579M
Total liabilities$32.5M$34.6M$23.6M$50.8M$48.2M$62.1M$75.4M$108M
Long-term debt$24.5M$19.3M$0.00——$0.00$9.74M$9.64M
Shareholders' equity-$56.6M$85.1M$416M$412M$399M$391M$456M$471M
Retained earnings-$57.5M-$52.2M-$62.5M-$93.8M-$161M-$218M-$200M-$224M
Shares (wtd avg diluted)1.91M8.66M18.9M25.1M26.1M26.8M29.3M29.0M

Every figure is extracted from CASTLE BIOSCIENCES INC’s annual reports as filed with the SEC (XBRL company facts) — no third-party estimates. Fiscal years are labeled by period end; filers occasionally re-tag concepts, so a sparse cell means the company didn’t report that concept for that year. Free cash flow = operating cash flow − capital expenditures.

Common questions

What is CASTLE BIOSCIENCES INC's annual revenue?
CASTLE BIOSCIENCES INC (CSTL) reported $344M of revenue for fiscal year 2025 — up 3.7% from $332M in FY2024, per its annual report filed with the SEC.
Is CASTLE BIOSCIENCES INC profitable?
Not in FY2025 — CSTL reported a net loss of $24.2M, per SEC filings.
What is CASTLE BIOSCIENCES INC's free cash flow?
$28.3M in FY2025 (operating cash flow $64.3M minus $36.0M of capital expenditures), from the SEC cash-flow statement.
Does CSTL pay a dividend?
CASTLE BIOSCIENCES INC reported no cash dividends paid in FY2025, per its SEC cash-flow statement.
Full CSTL analysis — verdict, score & filings →Is CSTL a buy? →

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.