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Side-by-side financial comparison of BioNexus Gene Lab Corp (BGLC) and CASTLE BIOSCIENCES INC (CSTL). Click either name above to swap in a different company.

CASTLE BIOSCIENCES INC is the larger business by last-quarter revenue ($87.0M vs $483.8K, roughly 179.9× BioNexus Gene Lab Corp). On growth, CASTLE BIOSCIENCES INC posted the faster year-over-year revenue change (0.8% vs -80.8%). CASTLE BIOSCIENCES INC produced more free cash flow last quarter ($19.7M vs $960.1K). Over the past eight quarters, CASTLE BIOSCIENCES INC's revenue compounded faster (9.2% CAGR vs -54.9%).

BioNexus Gene Lab Corp is a biotechnology company specializing in molecular diagnostic testing, genetic analysis, and related life science solutions. It caters to healthcare institutions, research organizations, and individual customers, with its primary operational and market focus on the Southeast Asian region.

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.

BGLC vs CSTL — Head-to-Head

Bigger by revenue
CSTL
CSTL
179.9× larger
CSTL
$87.0M
$483.8K
BGLC
Growing faster (revenue YoY)
CSTL
CSTL
+81.6% gap
CSTL
0.8%
-80.8%
BGLC
More free cash flow
CSTL
CSTL
$18.8M more FCF
CSTL
$19.7M
$960.1K
BGLC
Faster 2-yr revenue CAGR
CSTL
CSTL
Annualised
CSTL
9.2%
-54.9%
BGLC

Income Statement — Q4 2025 vs Q4 2025

Metric
BGLC
BGLC
CSTL
CSTL
Revenue
$483.8K
$87.0M
Net Profit
$-1.0M
Gross Margin
-0.8%
79.0%
Operating Margin
-213.5%
-4.4%
Net Margin
-214.2%
Revenue YoY
-80.8%
0.8%
Net Profit YoY
-197.5%
EPS (diluted)
$-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
BGLC
BGLC
CSTL
CSTL
Q4 25
$483.8K
$87.0M
Q3 25
$2.5M
$83.0M
Q2 25
$2.3M
$86.2M
Q1 25
$2.1M
$88.0M
Q4 24
$2.5M
$86.3M
Q3 24
$2.6M
$85.8M
Q2 24
$2.0M
$87.0M
Q1 24
$2.4M
$73.0M
Net Profit
BGLC
BGLC
CSTL
CSTL
Q4 25
$-1.0M
Q3 25
$-709.0K
$-501.0K
Q2 25
$-616.2K
$4.5M
Q1 25
$-623.3K
$-25.8M
Q4 24
$-348.3K
Q3 24
$-1.3M
$2.3M
Q2 24
$199.1K
$8.9M
Q1 24
$-103.8K
$-2.5M
Gross Margin
BGLC
BGLC
CSTL
CSTL
Q4 25
-0.8%
79.0%
Q3 25
14.8%
77.5%
Q2 25
16.3%
79.5%
Q1 25
16.1%
81.4%
Q4 24
12.3%
81.3%
Q3 24
12.4%
81.8%
Q2 24
14.6%
83.3%
Q1 24
15.3%
81.0%
Operating Margin
BGLC
BGLC
CSTL
CSTL
Q4 25
-213.5%
-4.4%
Q3 25
-27.6%
-8.2%
Q2 25
-27.0%
-4.9%
Q1 25
-28.9%
-31.7%
Q4 24
-16.5%
4.7%
Q3 24
-50.9%
5.9%
Q2 24
13.1%
5.8%
Q1 24
-3.3%
-7.5%
Net Margin
BGLC
BGLC
CSTL
CSTL
Q4 25
-214.2%
Q3 25
-27.9%
-0.6%
Q2 25
-27.3%
5.2%
Q1 25
-29.2%
-29.4%
Q4 24
-13.8%
Q3 24
-51.1%
2.6%
Q2 24
10.1%
10.3%
Q1 24
-4.4%
-3.5%
EPS (diluted)
BGLC
BGLC
CSTL
CSTL
Q4 25
$-0.06
Q3 25
$-0.40
$-0.02
Q2 25
$-0.34
$0.15
Q1 25
$-0.04
$-0.90
Q4 24
$0.55
$0.32
Q3 24
$-0.75
$0.08
Q2 24
$0.11
$0.31
Q1 24
$-0.01
$-0.09

Balance Sheet & Financial Strength

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

Metric
BGLC
BGLC
CSTL
CSTL
Cash + ST InvestmentsLiquidity on hand
$2.5M
$299.5M
Total DebtLower is stronger
$10.1M
Stockholders' EquityBook value
$8.6M
$470.9M
Total Assets
$9.3M
$578.6M
Debt / EquityLower = less leverage
0.02×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
BGLC
BGLC
CSTL
CSTL
Q4 25
$2.5M
$299.5M
Q3 25
$287.5M
Q2 25
$275.9M
Q1 25
$275.2M
Q4 24
$2.9M
$293.1M
Q3 24
$95.0M
Q2 24
$85.6M
Q1 24
$82.9M
Total Debt
BGLC
BGLC
CSTL
CSTL
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
Q1 24
$10.0M
Stockholders' Equity
BGLC
BGLC
CSTL
CSTL
Q4 25
$8.6M
$470.9M
Q3 25
$6.8M
$467.0M
Q2 25
$7.5M
$455.4M
Q1 25
$7.8M
$440.3M
Q4 24
$8.3M
$455.8M
Q3 24
$9.4M
$441.1M
Q2 24
$9.5M
$423.9M
Q1 24
$9.3M
$402.5M
Total Assets
BGLC
BGLC
CSTL
CSTL
Q4 25
$9.3M
$578.6M
Q3 25
$7.6M
$562.8M
Q2 25
$9.4M
$544.7M
Q1 25
$9.5M
$501.7M
Q4 24
$10.4M
$531.2M
Q3 24
$11.0M
$514.6M
Q2 24
$11.1M
$487.3M
Q1 24
$11.2M
$458.5M
Debt / Equity
BGLC
BGLC
CSTL
CSTL
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×
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
BGLC
BGLC
CSTL
CSTL
Operating Cash FlowLast quarter
$961.1K
$26.9M
Free Cash FlowOCF − Capex
$960.1K
$19.7M
FCF MarginFCF / Revenue
198.5%
22.7%
Capex IntensityCapex / Revenue
0.2%
8.3%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-1.9M
$28.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
BGLC
BGLC
CSTL
CSTL
Q4 25
$961.1K
$26.9M
Q3 25
$-1.2M
$22.6M
Q2 25
$-737.9K
$20.8M
Q1 25
$-824.1K
$-6.0M
Q4 24
$219.2K
$24.4M
Q3 24
$-1.6M
$23.3M
Q2 24
$-672.3K
$24.0M
Q1 24
$-37.2K
$-6.8M
Free Cash Flow
BGLC
BGLC
CSTL
CSTL
Q4 25
$960.1K
$19.7M
Q3 25
$-1.2M
$7.8M
Q2 25
$-759.4K
$11.6M
Q1 25
$-833.1K
$-10.8M
Q4 24
$215.2K
$16.8M
Q3 24
$-1.8M
$17.0M
Q2 24
$-674.1K
$18.8M
Q1 24
$-59.1K
$-16.0M
FCF Margin
BGLC
BGLC
CSTL
CSTL
Q4 25
198.5%
22.7%
Q3 25
-48.9%
9.4%
Q2 25
-33.6%
13.4%
Q1 25
-39.0%
-12.2%
Q4 24
8.5%
19.5%
Q3 24
-68.5%
19.8%
Q2 24
-34.1%
21.6%
Q1 24
-2.5%
-21.9%
Capex Intensity
BGLC
BGLC
CSTL
CSTL
Q4 25
0.2%
8.3%
Q3 25
0.2%
17.9%
Q2 25
0.9%
10.7%
Q1 25
0.4%
5.4%
Q4 24
0.2%
8.8%
Q3 24
7.6%
7.4%
Q2 24
0.1%
6.0%
Q1 24
0.9%
12.5%
Cash Conversion
BGLC
BGLC
CSTL
CSTL
Q4 25
Q3 25
Q2 25
4.60×
Q1 25
Q4 24
Q3 24
10.29×
Q2 24
-3.38×
2.69×
Q1 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

BGLC
BGLC

Segment breakdown not available.

CSTL
CSTL

Dermatologic$48.6M56%
Non Dermatologic$38.4M44%

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