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

PAR TECHNOLOGY CORP is the larger business by last-quarter revenue ($120.1M vs $87.0M, roughly 1.4× CASTLE BIOSCIENCES INC). On growth, PAR TECHNOLOGY CORP posted the faster year-over-year revenue change (14.4% vs 0.8%). CASTLE BIOSCIENCES INC produced more free cash flow last quarter ($19.7M vs $-12.5M). Over the past eight quarters, PAR TECHNOLOGY CORP's revenue compounded faster (30.9% CAGR vs 9.2%).

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.

PAR Technology Corp is a global provider of point-of-sale systems, restaurant management software, and integrated tech solutions. Its core segments serve food service, hospitality, and government security markets, offering cloud tools to streamline operations, enhance customer experiences, and boost efficiency for enterprise and small-to-medium clients.

CSTL vs PAR — Head-to-Head

Bigger by revenue
PAR
PAR
1.4× larger
PAR
$120.1M
$87.0M
CSTL
Growing faster (revenue YoY)
PAR
PAR
+13.6% gap
PAR
14.4%
0.8%
CSTL
More free cash flow
CSTL
CSTL
$32.3M more FCF
CSTL
$19.7M
$-12.5M
PAR
Faster 2-yr revenue CAGR
PAR
PAR
Annualised
PAR
30.9%
9.2%
CSTL

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CSTL
CSTL
PAR
PAR
Revenue
$87.0M
$120.1M
Net Profit
Gross Margin
79.0%
41.2%
Operating Margin
-4.4%
-15.0%
Net Margin
Revenue YoY
0.8%
14.4%
Net Profit YoY
EPS (diluted)
$-0.06
$-0.52

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
PAR
PAR
Q4 25
$87.0M
$120.1M
Q3 25
$83.0M
$119.2M
Q2 25
$86.2M
$112.4M
Q1 25
$88.0M
$103.9M
Q4 24
$86.3M
$105.0M
Q3 24
$85.8M
$96.8M
Q2 24
$87.0M
$78.2M
Q1 24
$73.0M
$70.1M
Net Profit
CSTL
CSTL
PAR
PAR
Q4 25
Q3 25
$-501.0K
$-18.2M
Q2 25
$4.5M
$-21.0M
Q1 25
$-25.8M
$-24.4M
Q4 24
Q3 24
$2.3M
$-19.8M
Q2 24
$8.9M
$54.2M
Q1 24
$-2.5M
$-18.3M
Gross Margin
CSTL
CSTL
PAR
PAR
Q4 25
79.0%
41.2%
Q3 25
77.5%
41.3%
Q2 25
79.5%
45.4%
Q1 25
81.4%
46.5%
Q4 24
81.3%
42.9%
Q3 24
81.8%
44.5%
Q2 24
83.3%
41.0%
Q1 24
81.0%
37.2%
Operating Margin
CSTL
CSTL
PAR
PAR
Q4 25
-4.4%
-15.0%
Q3 25
-8.2%
-14.8%
Q2 25
-4.9%
-15.4%
Q1 25
-31.7%
-15.2%
Q4 24
4.7%
-15.6%
Q3 24
5.9%
-15.7%
Q2 24
5.8%
-26.5%
Q1 24
-7.5%
-38.2%
Net Margin
CSTL
CSTL
PAR
PAR
Q4 25
Q3 25
-0.6%
-15.3%
Q2 25
5.2%
-18.7%
Q1 25
-29.4%
-23.4%
Q4 24
Q3 24
2.6%
-20.5%
Q2 24
10.3%
69.3%
Q1 24
-3.5%
-26.1%
EPS (diluted)
CSTL
CSTL
PAR
PAR
Q4 25
$-0.06
$-0.52
Q3 25
$-0.02
$-0.45
Q2 25
$0.15
$-0.52
Q1 25
$-0.90
$-0.60
Q4 24
$0.32
$-0.56
Q3 24
$0.08
$-0.56
Q2 24
$0.31
$1.60
Q1 24
$-0.09
$-0.62

Balance Sheet & Financial Strength

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

Metric
CSTL
CSTL
PAR
PAR
Cash + ST InvestmentsLiquidity on hand
$299.5M
$80.1M
Total DebtLower is stronger
$10.1M
$394.0M
Stockholders' EquityBook value
$470.9M
$825.1M
Total Assets
$578.6M
$1.4B
Debt / EquityLower = less leverage
0.02×
0.48×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CSTL
CSTL
PAR
PAR
Q4 25
$299.5M
$80.1M
Q3 25
$287.5M
$93.0M
Q2 25
$275.9M
$85.7M
Q1 25
$275.2M
$92.2M
Q4 24
$293.1M
$108.6M
Q3 24
$95.0M
$118.4M
Q2 24
$85.6M
$142.5M
Q1 24
$82.9M
$72.5M
Total Debt
CSTL
CSTL
PAR
PAR
Q4 25
$10.1M
$394.0M
Q3 25
$10.0M
$393.4M
Q2 25
$10.0M
$392.8M
Q1 25
$10.0M
$392.3M
Q4 24
$10.0M
$368.4M
Q3 24
$10.0M
$466.7M
Q2 24
$10.0M
$378.7M
Q1 24
$10.0M
$378.2M
Stockholders' Equity
CSTL
CSTL
PAR
PAR
Q4 25
$470.9M
$825.1M
Q3 25
$467.0M
$838.0M
Q2 25
$455.4M
$859.1M
Q1 25
$440.3M
$852.0M
Q4 24
$455.8M
$871.7M
Q3 24
$441.1M
$692.7M
Q2 24
$423.9M
$588.3M
Q1 24
$402.5M
$526.4M
Total Assets
CSTL
CSTL
PAR
PAR
Q4 25
$578.6M
$1.4B
Q3 25
$562.8M
$1.4B
Q2 25
$544.7M
$1.4B
Q1 25
$501.7M
$1.4B
Q4 24
$531.2M
$1.4B
Q3 24
$514.6M
$1.3B
Q2 24
$487.3M
$1.1B
Q1 24
$458.5M
$1.0B
Debt / Equity
CSTL
CSTL
PAR
PAR
Q4 25
0.02×
0.48×
Q3 25
0.02×
0.47×
Q2 25
0.02×
0.46×
Q1 25
0.02×
0.46×
Q4 24
0.02×
0.42×
Q3 24
0.02×
0.67×
Q2 24
0.02×
0.64×
Q1 24
0.02×
0.72×

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
PAR
PAR
Operating Cash FlowLast quarter
$26.9M
$-11.8M
Free Cash FlowOCF − Capex
$19.7M
$-12.5M
FCF MarginFCF / Revenue
22.7%
-10.4%
Capex IntensityCapex / Revenue
8.3%
0.7%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$28.3M
$-30.5M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CSTL
CSTL
PAR
PAR
Q4 25
$26.9M
$-11.8M
Q3 25
$22.6M
$8.4M
Q2 25
$20.8M
$-6.6M
Q1 25
$-6.0M
$-17.2M
Q4 24
$24.4M
$3.4M
Q3 24
$23.3M
$8.8M
Q2 24
$24.0M
$-13.8M
Q1 24
$-6.8M
$-23.6M
Free Cash Flow
CSTL
CSTL
PAR
PAR
Q4 25
$19.7M
$-12.5M
Q3 25
$7.8M
$7.0M
Q2 25
$11.6M
$-7.4M
Q1 25
$-10.8M
$-17.6M
Q4 24
$16.8M
$3.2M
Q3 24
$17.0M
$8.4M
Q2 24
$18.8M
$-14.2M
Q1 24
$-16.0M
$-23.6M
FCF Margin
CSTL
CSTL
PAR
PAR
Q4 25
22.7%
-10.4%
Q3 25
9.4%
5.9%
Q2 25
13.4%
-6.6%
Q1 25
-12.2%
-16.9%
Q4 24
19.5%
3.0%
Q3 24
19.8%
8.7%
Q2 24
21.6%
-18.2%
Q1 24
-21.9%
-33.7%
Capex Intensity
CSTL
CSTL
PAR
PAR
Q4 25
8.3%
0.7%
Q3 25
17.9%
1.1%
Q2 25
10.7%
0.7%
Q1 25
5.4%
0.4%
Q4 24
8.8%
0.2%
Q3 24
7.4%
0.4%
Q2 24
6.0%
0.5%
Q1 24
12.5%
0.1%
Cash Conversion
CSTL
CSTL
PAR
PAR
Q4 25
Q3 25
Q2 25
4.60×
Q1 25
Q4 24
Q3 24
10.29×
Q2 24
2.69×
-0.26×
Q1 24

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%

PAR
PAR

Subscription Service$76.1M63%
Hardware$27.8M23%
Professional Service$16.2M13%

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