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Side-by-side financial comparison of CASTLE BIOSCIENCES INC (CSTL) and MERCANTILE BANK CORP (MBWM). Click either name above to swap in a different company.

CASTLE BIOSCIENCES INC is the larger business by last-quarter revenue ($87.0M vs $67.6M, roughly 1.3× MERCANTILE BANK CORP). Over the past eight quarters, CASTLE BIOSCIENCES INC's revenue compounded faster (9.2% CAGR vs 9.1%).

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.

Tamilnad Mercantile Bank Limited (TMB) is an Indian bank headquartered at Thoothukudi, Tamil Nadu. TMB was founded in 1921 as the Nadar Bank, but changed its name to Tamilnad Mercantile Bank in November 1962 to widen its appeal beyond the Nadar community. The bank currently has 600 full branches throughout India, 12 regional offices and two link offices, two central processing centres, one service branch, four currency chests, 48 eLobby centres, 262 cash recycler machines and 1151 automated ...

CSTL vs MBWM — Head-to-Head

Bigger by revenue
CSTL
CSTL
1.3× larger
CSTL
$87.0M
$67.6M
MBWM
Faster 2-yr revenue CAGR
CSTL
CSTL
Annualised
CSTL
9.2%
9.1%
MBWM

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
CSTL
CSTL
MBWM
MBWM
Revenue
$87.0M
$67.6M
Net Profit
$22.7M
Gross Margin
79.0%
Operating Margin
-4.4%
Net Margin
33.6%
Revenue YoY
0.8%
Net Profit YoY
16.1%
EPS (diluted)
$-0.06
$1.32

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
CSTL
CSTL
MBWM
MBWM
Q1 26
$67.6M
Q4 25
$87.0M
$62.1M
Q3 25
$83.0M
$62.4M
Q2 25
$86.2M
$60.9M
Q1 25
$88.0M
$57.3M
Q4 24
$86.3M
$58.5M
Q3 24
$85.8M
$58.0M
Q2 24
$87.0M
$56.8M
Net Profit
CSTL
CSTL
MBWM
MBWM
Q1 26
$22.7M
Q4 25
$22.8M
Q3 25
$-501.0K
$23.8M
Q2 25
$4.5M
$22.6M
Q1 25
$-25.8M
$19.5M
Q4 24
$19.6M
Q3 24
$2.3M
$19.6M
Q2 24
$8.9M
$18.8M
Gross Margin
CSTL
CSTL
MBWM
MBWM
Q1 26
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%
Operating Margin
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
-4.4%
42.0%
Q3 25
-8.2%
44.0%
Q2 25
-4.9%
42.6%
Q1 25
-31.7%
42.0%
Q4 24
4.7%
39.7%
Q3 24
5.9%
42.4%
Q2 24
5.8%
41.4%
Net Margin
CSTL
CSTL
MBWM
MBWM
Q1 26
33.6%
Q4 25
36.8%
Q3 25
-0.6%
38.1%
Q2 25
5.2%
37.1%
Q1 25
-29.4%
34.1%
Q4 24
33.5%
Q3 24
2.6%
33.8%
Q2 24
10.3%
33.1%
EPS (diluted)
CSTL
CSTL
MBWM
MBWM
Q1 26
$1.32
Q4 25
$-0.06
$1.41
Q3 25
$-0.02
$1.46
Q2 25
$0.15
$1.39
Q1 25
$-0.90
$1.21
Q4 24
$0.32
$1.20
Q3 24
$0.08
$1.22
Q2 24
$0.31
$1.17

Balance Sheet & Financial Strength

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

Metric
CSTL
CSTL
MBWM
MBWM
Cash + ST InvestmentsLiquidity on hand
$299.5M
Total DebtLower is stronger
$10.1M
$1.5M
Stockholders' EquityBook value
$470.9M
$736.9M
Total Assets
$578.6M
$6.9B
Debt / EquityLower = less leverage
0.02×
0.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
$299.5M
Q3 25
$287.5M
Q2 25
$275.9M
Q1 25
$275.2M
Q4 24
$293.1M
Q3 24
$95.0M
Q2 24
$85.6M
Total Debt
CSTL
CSTL
MBWM
MBWM
Q1 26
$1.5M
Q4 25
$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
Stockholders' Equity
CSTL
CSTL
MBWM
MBWM
Q1 26
$736.9M
Q4 25
$470.9M
$724.9M
Q3 25
$467.0M
$657.6M
Q2 25
$455.4M
$631.5M
Q1 25
$440.3M
$608.3M
Q4 24
$455.8M
$584.5M
Q3 24
$441.1M
$583.3M
Q2 24
$423.9M
$551.2M
Total Assets
CSTL
CSTL
MBWM
MBWM
Q1 26
$6.9B
Q4 25
$578.6M
$6.8B
Q3 25
$562.8M
$6.3B
Q2 25
$544.7M
$6.2B
Q1 25
$501.7M
$6.1B
Q4 24
$531.2M
$6.1B
Q3 24
$514.6M
$5.9B
Q2 24
$487.3M
$5.6B
Debt / Equity
CSTL
CSTL
MBWM
MBWM
Q1 26
0.00×
Q4 25
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×

Cash Flow & Capital Efficiency

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

Metric
CSTL
CSTL
MBWM
MBWM
Operating Cash FlowLast quarter
$26.9M
Free Cash FlowOCF − Capex
$19.7M
FCF MarginFCF / Revenue
22.7%
Capex IntensityCapex / Revenue
8.3%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$28.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
$26.9M
$18.0M
Q3 25
$22.6M
$23.1M
Q2 25
$20.8M
$-7.8M
Q1 25
$-6.0M
$-3.0M
Q4 24
$24.4M
$101.1M
Q3 24
$23.3M
$-8.1M
Q2 24
$24.0M
$9.1M
Free Cash Flow
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
$19.7M
Q3 25
$7.8M
Q2 25
$11.6M
Q1 25
$-10.8M
Q4 24
$16.8M
Q3 24
$17.0M
Q2 24
$18.8M
FCF Margin
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
22.7%
Q3 25
9.4%
Q2 25
13.4%
Q1 25
-12.2%
Q4 24
19.5%
Q3 24
19.8%
Q2 24
21.6%
Capex Intensity
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
8.3%
Q3 25
17.9%
Q2 25
10.7%
Q1 25
5.4%
Q4 24
8.8%
Q3 24
7.4%
Q2 24
6.0%
Cash Conversion
CSTL
CSTL
MBWM
MBWM
Q1 26
Q4 25
0.79×
Q3 25
0.97×
Q2 25
4.60×
-0.35×
Q1 25
-0.15×
Q4 24
5.15×
Q3 24
10.29×
-0.41×
Q2 24
2.69×
0.49×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CSTL
CSTL

Dermatologic$48.6M56%
Non Dermatologic$38.4M44%

MBWM
MBWM

Net Interest Income$55.9M83%
Noninterest Income$11.7M17%

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