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Side-by-side financial comparison of Heartflow, Inc. (HTFL) and NAPCO SECURITY TECHNOLOGIES, INC (NSSC). Click either name above to swap in a different company.

NAPCO SECURITY TECHNOLOGIES, INC is the larger business by last-quarter revenue ($48.2M vs $46.3M, roughly 1.0× Heartflow, Inc.). NAPCO SECURITY TECHNOLOGIES, INC runs the higher net margin — 28.0% vs -109.9%, a 137.9% gap on every dollar of revenue. NAPCO SECURITY TECHNOLOGIES, INC produced more free cash flow last quarter ($14.5M vs $-4.2M).

HeartFlow, Inc. develops non-invasive cardiovascular diagnostic solutions for global healthcare providers. Its core product uses CT scan data to build 3D coronary artery models, assess blood flow to detect blockages, and support clinicians in making personalized heart disease treatment decisions without invasive procedures.

Napco Security Technologies, Inc. was set up in 1969 and now is based in Amityville, New York. The company focuses on security products, such as electronic locking devices, alarm systems, and building access control systems. The company was formerly known as Napco Security Systems, Inc.

HTFL vs NSSC — Head-to-Head

Bigger by revenue
NSSC
NSSC
1.0× larger
NSSC
$48.2M
$46.3M
HTFL
Higher net margin
NSSC
NSSC
137.9% more per $
NSSC
28.0%
-109.9%
HTFL
More free cash flow
NSSC
NSSC
$18.7M more FCF
NSSC
$14.5M
$-4.2M
HTFL

Income Statement — Q3 FY2025 vs Q2 FY2026

Metric
HTFL
HTFL
NSSC
NSSC
Revenue
$46.3M
$48.2M
Net Profit
$-50.9M
$13.5M
Gross Margin
76.5%
58.6%
Operating Margin
-32.6%
30.6%
Net Margin
-109.9%
28.0%
Revenue YoY
12.2%
Net Profit YoY
29.0%
EPS (diluted)
$-1.04
$0.38

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
HTFL
HTFL
NSSC
NSSC
Q4 25
$48.2M
Q3 25
$46.3M
$49.2M
Q2 25
$43.4M
$50.7M
Q1 25
$44.0M
Q4 24
$42.9M
Q3 24
$44.0M
Q2 24
$50.3M
Q1 24
$49.3M
Net Profit
HTFL
HTFL
NSSC
NSSC
Q4 25
$13.5M
Q3 25
$-50.9M
$12.2M
Q2 25
$-9.2M
$11.6M
Q1 25
$10.1M
Q4 24
$10.5M
Q3 24
$11.2M
Q2 24
$13.5M
Q1 24
$13.2M
Gross Margin
HTFL
HTFL
NSSC
NSSC
Q4 25
58.6%
Q3 25
76.5%
56.6%
Q2 25
75.5%
52.8%
Q1 25
57.2%
Q4 24
57.0%
Q3 24
55.9%
Q2 24
55.3%
Q1 24
53.8%
Operating Margin
HTFL
HTFL
NSSC
NSSC
Q4 25
30.6%
Q3 25
-32.6%
27.7%
Q2 25
-31.6%
23.8%
Q1 25
25.4%
Q4 24
26.0%
Q3 24
26.9%
Q2 24
27.7%
Q1 24
29.4%
Net Margin
HTFL
HTFL
NSSC
NSSC
Q4 25
28.0%
Q3 25
-109.9%
24.7%
Q2 25
-21.2%
22.9%
Q1 25
23.0%
Q4 24
24.4%
Q3 24
25.4%
Q2 24
26.9%
Q1 24
26.8%
EPS (diluted)
HTFL
HTFL
NSSC
NSSC
Q4 25
$0.38
Q3 25
$-1.04
$0.34
Q2 25
$-1.46
$0.33
Q1 25
$0.28
Q4 24
$0.28
Q3 24
$0.30
Q2 24
$0.36
Q1 24
$0.36

Balance Sheet & Financial Strength

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

Metric
HTFL
HTFL
NSSC
NSSC
Cash + ST InvestmentsLiquidity on hand
$291.2M
$115.4M
Total DebtLower is stronger
Stockholders' EquityBook value
$254.6M
$184.8M
Total Assets
$364.4M
$212.8M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
HTFL
HTFL
NSSC
NSSC
Q4 25
$115.4M
Q3 25
$291.2M
$105.8M
Q2 25
$80.2M
$99.2M
Q1 25
$89.3M
Q4 24
$99.2M
Q3 24
$91.3M
Q2 24
$70.7M
Q1 24
$60.9M
Stockholders' Equity
HTFL
HTFL
NSSC
NSSC
Q4 25
$184.8M
Q3 25
$254.6M
$176.1M
Q2 25
$-894.8M
$168.6M
Q1 25
$161.5M
Q4 24
$174.2M
Q3 24
$178.6M
Q2 24
$178.9M
Q1 24
$168.2M
Total Assets
HTFL
HTFL
NSSC
NSSC
Q4 25
$212.8M
Q3 25
$364.4M
$206.0M
Q2 25
$159.4M
$198.1M
Q1 25
$190.9M
Q4 24
$202.7M
Q3 24
$209.9M
Q2 24
$207.8M
Q1 24
$194.8M

Cash Flow & Capital Efficiency

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

Metric
HTFL
HTFL
NSSC
NSSC
Operating Cash FlowLast quarter
$-3.0M
$15.1M
Free Cash FlowOCF − Capex
$-4.2M
$14.5M
FCF MarginFCF / Revenue
-9.1%
30.1%
Capex IntensityCapex / Revenue
2.7%
1.2%
Cash ConversionOCF / Net Profit
1.12×
TTM Free Cash FlowTrailing 4 quarters
$53.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
HTFL
HTFL
NSSC
NSSC
Q4 25
$15.1M
Q3 25
$-3.0M
$11.6M
Q2 25
$-40.5M
$14.6M
Q1 25
$13.4M
Q4 24
$13.5M
Q3 24
$12.0M
Q2 24
$14.3M
Q1 24
$12.3M
Free Cash Flow
HTFL
HTFL
NSSC
NSSC
Q4 25
$14.5M
Q3 25
$-4.2M
$11.4M
Q2 25
$-42.4M
$14.4M
Q1 25
$13.3M
Q4 24
$12.4M
Q3 24
$11.3M
Q2 24
$13.8M
Q1 24
$12.0M
FCF Margin
HTFL
HTFL
NSSC
NSSC
Q4 25
30.1%
Q3 25
-9.1%
23.3%
Q2 25
-97.6%
28.4%
Q1 25
30.3%
Q4 24
28.8%
Q3 24
25.8%
Q2 24
27.4%
Q1 24
24.3%
Capex Intensity
HTFL
HTFL
NSSC
NSSC
Q4 25
1.2%
Q3 25
2.7%
0.4%
Q2 25
4.4%
0.5%
Q1 25
0.1%
Q4 24
2.6%
Q3 24
1.5%
Q2 24
1.1%
Q1 24
0.7%
Cash Conversion
HTFL
HTFL
NSSC
NSSC
Q4 25
1.12×
Q3 25
0.96×
Q2 25
1.26×
Q1 25
1.32×
Q4 24
1.29×
Q3 24
1.08×
Q2 24
1.06×
Q1 24
0.94×

Financial Flow Comparison

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

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