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Side-by-side financial comparison of Bowhead Specialty Holdings Inc. (BOW) and CASTLE BIOSCIENCES INC (CSTL). Click either name above to swap in a different company.

Bowhead Specialty Holdings Inc. is the larger business by last-quarter revenue ($151.7M vs $87.0M, roughly 1.7× CASTLE BIOSCIENCES INC). Bowhead Specialty Holdings Inc. produced more free cash flow last quarter ($326.0M vs $19.7M).

Bowhead Specialty Holdings Inc. is a specialty insurance holding company that offers a diversified portfolio of property and casualty insurance products, focusing on underserved niche market segments primarily across North America. It provides tailored risk management solutions and specialized coverage options for both commercial and individual clients.

Castle Biosciences Inc. is a commercial-stage diagnostic firm that develops and markets proprietary, clinically actionable tests for dermatological conditions such as melanoma and other skin cancers, plus rare diseases. It operates mainly in the U.S. healthcare market, focusing on segments with high unmet need for more accurate diagnostics to guide treatment choices.

BOW vs CSTL — Head-to-Head

Bigger by revenue
BOW
BOW
1.7× larger
BOW
$151.7M
$87.0M
CSTL
More free cash flow
BOW
BOW
$306.3M more FCF
BOW
$326.0M
$19.7M
CSTL

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
BOW
BOW
CSTL
CSTL
Revenue
$151.7M
$87.0M
Net Profit
$14.8M
Gross Margin
79.0%
Operating Margin
11.7%
-4.4%
Net Margin
9.8%
Revenue YoY
0.8%
Net Profit YoY
EPS (diluted)
$0.44
$-0.06

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
BOW
BOW
CSTL
CSTL
Q4 25
$151.7M
$87.0M
Q3 25
$143.9M
$83.0M
Q2 25
$133.3M
$86.2M
Q1 25
$122.7M
$88.0M
Q4 24
$86.3M
Q3 24
$116.8M
$85.8M
Q2 24
$98.9M
$87.0M
Q1 24
$73.0M
Net Profit
BOW
BOW
CSTL
CSTL
Q4 25
$14.8M
Q3 25
$15.2M
$-501.0K
Q2 25
$12.3M
$4.5M
Q1 25
$11.4M
$-25.8M
Q4 24
Q3 24
$12.1M
$2.3M
Q2 24
$5.5M
$8.9M
Q1 24
$-2.5M
Gross Margin
BOW
BOW
CSTL
CSTL
Q4 25
79.0%
Q3 25
77.5%
Q2 25
79.5%
Q1 25
81.4%
Q4 24
81.3%
Q3 24
81.8%
Q2 24
83.3%
Q1 24
81.0%
Operating Margin
BOW
BOW
CSTL
CSTL
Q4 25
11.7%
-4.4%
Q3 25
13.3%
-8.2%
Q2 25
11.9%
-4.9%
Q1 25
11.8%
-31.7%
Q4 24
4.7%
Q3 24
13.5%
5.9%
Q2 24
7.5%
5.8%
Q1 24
-7.5%
Net Margin
BOW
BOW
CSTL
CSTL
Q4 25
9.8%
Q3 25
10.5%
-0.6%
Q2 25
9.3%
5.2%
Q1 25
9.3%
-29.4%
Q4 24
Q3 24
10.4%
2.6%
Q2 24
5.6%
10.3%
Q1 24
-3.5%
EPS (diluted)
BOW
BOW
CSTL
CSTL
Q4 25
$0.44
$-0.06
Q3 25
$0.45
$-0.02
Q2 25
$0.36
$0.15
Q1 25
$0.34
$-0.90
Q4 24
$0.32
Q3 24
$0.36
$0.08
Q2 24
$0.20
$0.31
Q1 24
$-0.09

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
BOW
BOW
CSTL
CSTL
Cash + ST InvestmentsLiquidity on hand
$193.5M
$299.5M
Total DebtLower is stronger
$146.4M
$10.1M
Stockholders' EquityBook value
$448.3M
$470.9M
Total Assets
$2.4B
$578.6M
Debt / EquityLower = less leverage
0.33×
0.02×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BOW
BOW
CSTL
CSTL
Q4 25
$193.5M
$299.5M
Q3 25
$197.9M
$287.5M
Q2 25
$114.8M
$275.9M
Q1 25
$88.0M
$275.2M
Q4 24
$293.1M
Q3 24
$132.9M
$95.0M
Q2 24
$180.3M
$85.6M
Q1 24
$82.9M
Total Debt
BOW
BOW
CSTL
CSTL
Q4 25
$146.4M
$10.1M
Q3 25
$10.0M
Q2 25
$10.0M
Q1 25
$10.0M
Q4 24
$10.0M
Q3 24
$10.0M
Q2 24
$10.0M
Q1 24
$10.0M
Stockholders' Equity
BOW
BOW
CSTL
CSTL
Q4 25
$448.3M
$470.9M
Q3 25
$430.2M
$467.0M
Q2 25
$407.2M
$455.4M
Q1 25
$391.0M
$440.3M
Q4 24
$455.8M
Q3 24
$364.7M
$441.1M
Q2 24
$339.9M
$423.9M
Q1 24
$402.5M
Total Assets
BOW
BOW
CSTL
CSTL
Q4 25
$2.4B
$578.6M
Q3 25
$2.1B
$562.8M
Q2 25
$1.9B
$544.7M
Q1 25
$1.8B
$501.7M
Q4 24
$531.2M
Q3 24
$1.5B
$514.6M
Q2 24
$1.4B
$487.3M
Q1 24
$458.5M
Debt / Equity
BOW
BOW
CSTL
CSTL
Q4 25
0.33×
0.02×
Q3 25
0.02×
Q2 25
0.02×
Q1 25
0.02×
Q4 24
0.02×
Q3 24
0.02×
Q2 24
0.02×
Q1 24
0.02×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
BOW
BOW
CSTL
CSTL
Operating Cash FlowLast quarter
$331.6M
$26.9M
Free Cash FlowOCF − Capex
$326.0M
$19.7M
FCF MarginFCF / Revenue
214.9%
22.7%
Capex IntensityCapex / Revenue
3.7%
8.3%
Cash ConversionOCF / Net Profit
22.34×
TTM Free Cash FlowTrailing 4 quarters
$593.4M
$28.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BOW
BOW
CSTL
CSTL
Q4 25
$331.6M
$26.9M
Q3 25
$114.7M
$22.6M
Q2 25
$109.0M
$20.8M
Q1 25
$47.7M
$-6.0M
Q4 24
$24.4M
Q3 24
$119.4M
$23.3M
Q2 24
$24.0M
Q1 24
$-6.8M
Free Cash Flow
BOW
BOW
CSTL
CSTL
Q4 25
$326.0M
$19.7M
Q3 25
$113.5M
$7.8M
Q2 25
$107.4M
$11.6M
Q1 25
$46.5M
$-10.8M
Q4 24
$16.8M
Q3 24
$118.4M
$17.0M
Q2 24
$18.8M
Q1 24
$-16.0M
FCF Margin
BOW
BOW
CSTL
CSTL
Q4 25
214.9%
22.7%
Q3 25
78.8%
9.4%
Q2 25
80.6%
13.4%
Q1 25
37.9%
-12.2%
Q4 24
19.5%
Q3 24
101.4%
19.8%
Q2 24
21.6%
Q1 24
-21.9%
Capex Intensity
BOW
BOW
CSTL
CSTL
Q4 25
3.7%
8.3%
Q3 25
0.9%
17.9%
Q2 25
1.2%
10.7%
Q1 25
1.0%
5.4%
Q4 24
8.8%
Q3 24
0.9%
7.4%
Q2 24
6.0%
Q1 24
12.5%
Cash Conversion
BOW
BOW
CSTL
CSTL
Q4 25
22.34×
Q3 25
7.56×
Q2 25
8.83×
4.60×
Q1 25
4.18×
Q4 24
Q3 24
9.88×
10.29×
Q2 24
2.69×
Q1 24

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

BOW
BOW

Segment breakdown not available.

CSTL
CSTL

Dermatologic$48.6M56%
Non Dermatologic$38.4M44%

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