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Side-by-side financial comparison of ALPHA PRO TECH LTD (APT) and ASP Isotopes Inc. (ASPI). Click either name above to swap in a different company.

ASP Isotopes Inc. is the larger business by last-quarter revenue ($16.7M vs $13.9M, roughly 1.2× ALPHA PRO TECH LTD). On growth, ASP Isotopes Inc. posted the faster year-over-year revenue change (1295.7% vs 0.3%). ALPHA PRO TECH LTD produced more free cash flow last quarter ($51.0K vs $-47.4M).

Alpha Pro Tech Ltd is a leading developer, manufacturer and marketer of disposable protective apparel, face masks, and building supply products including weather-resistant barriers. It primarily serves the healthcare, industrial, and construction sectors, with core operating markets concentrated in North America.

ASP Isotopes Inc. is a specialty materials firm focused on developing and producing high-purity custom isotopes. Its products serve key sectors including nuclear medicine, targeted cancer therapies, advanced energy, and industrial research, with customers across North America, Europe and Asia Pacific.

APT vs ASPI — Head-to-Head

Bigger by revenue
ASPI
ASPI
1.2× larger
ASPI
$16.7M
$13.9M
APT
Growing faster (revenue YoY)
ASPI
ASPI
+1295.4% gap
ASPI
1295.7%
0.3%
APT
More free cash flow
APT
APT
$47.5M more FCF
APT
$51.0K
$-47.4M
ASPI

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
APT
APT
ASPI
ASPI
Revenue
$13.9M
$16.7M
Net Profit
$698.0K
Gross Margin
37.1%
12.5%
Operating Margin
6.9%
Net Margin
5.0%
Revenue YoY
0.3%
1295.7%
Net Profit YoY
-17.6%
-586.8%
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
APT
APT
ASPI
ASPI
Q4 25
$13.9M
$16.7M
Q3 25
$14.8M
$4.9M
Q2 25
$16.7M
Q1 25
$13.8M
Q4 24
$13.8M
Q3 24
$14.3M
Q2 24
$16.3M
Q1 24
$13.5M
Net Profit
APT
APT
ASPI
ASPI
Q4 25
$698.0K
Q3 25
$976.0K
$-12.9M
Q2 25
$1.2M
Q1 25
$613.0K
Q4 24
$847.0K
Q3 24
$862.0K
Q2 24
$1.6M
Q1 24
$576.0K
Gross Margin
APT
APT
ASPI
ASPI
Q4 25
37.1%
12.5%
Q3 25
39.7%
8.7%
Q2 25
36.8%
Q1 25
39.0%
Q4 24
37.6%
Q3 24
38.5%
Q2 24
42.0%
Q1 24
40.2%
Operating Margin
APT
APT
ASPI
ASPI
Q4 25
6.9%
Q3 25
7.4%
-306.1%
Q2 25
8.0%
Q1 25
3.3%
Q4 24
4.9%
Q3 24
5.2%
Q2 24
10.5%
Q1 24
2.4%
Net Margin
APT
APT
ASPI
ASPI
Q4 25
5.0%
Q3 25
6.6%
-263.7%
Q2 25
7.5%
Q1 25
4.4%
Q4 24
6.1%
Q3 24
6.0%
Q2 24
10.1%
Q1 24
4.3%
EPS (diluted)
APT
APT
ASPI
ASPI
Q4 25
$0.06
Q3 25
$0.09
$-0.15
Q2 25
$0.12
Q1 25
$0.06
Q4 24
$0.07
Q3 24
$0.08
Q2 24
$0.15
Q1 24
$0.05

Balance Sheet & Financial Strength

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

Metric
APT
APT
ASPI
ASPI
Cash + ST InvestmentsLiquidity on hand
$17.0M
$333.3M
Total DebtLower is stronger
$14.4M
Stockholders' EquityBook value
$62.5M
$204.2M
Total Assets
$74.1M
$498.0M
Debt / EquityLower = less leverage
0.07×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
APT
APT
ASPI
ASPI
Q4 25
$17.0M
$333.3M
Q3 25
$17.7M
$113.9M
Q2 25
$14.5M
Q1 25
$13.4M
Q4 24
$18.6M
Q3 24
$18.4M
Q2 24
$16.2M
Q1 24
$18.5M
Total Debt
APT
APT
ASPI
ASPI
Q4 25
$14.4M
Q3 25
$13.9M
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24
Stockholders' Equity
APT
APT
ASPI
ASPI
Q4 25
$62.5M
$204.2M
Q3 25
$62.5M
$74.1M
Q2 25
$62.2M
Q1 25
$61.7M
Q4 24
$62.2M
Q3 24
$62.1M
Q2 24
$62.0M
Q1 24
$61.6M
Total Assets
APT
APT
ASPI
ASPI
Q4 25
$74.1M
$498.0M
Q3 25
$73.9M
$225.9M
Q2 25
$73.2M
Q1 25
$72.2M
Q4 24
$73.7M
Q3 24
$73.3M
Q2 24
$72.7M
Q1 24
$72.7M
Debt / Equity
APT
APT
ASPI
ASPI
Q4 25
0.07×
Q3 25
0.19×
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24

Cash Flow & Capital Efficiency

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

Metric
APT
APT
ASPI
ASPI
Operating Cash FlowLast quarter
$318.0K
$-37.8M
Free Cash FlowOCF − Capex
$51.0K
$-47.4M
FCF MarginFCF / Revenue
0.4%
-284.7%
Capex IntensityCapex / Revenue
1.9%
57.9%
Cash ConversionOCF / Net Profit
0.46×
TTM Free Cash FlowTrailing 4 quarters
$1.7M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
APT
APT
ASPI
ASPI
Q4 25
$318.0K
$-37.8M
Q3 25
$3.9M
$-8.9M
Q2 25
$2.1M
Q1 25
$-4.0M
Q4 24
$2.4M
Q3 24
$5.3M
Q2 24
$-873.0K
Q1 24
$-1.2M
Free Cash Flow
APT
APT
ASPI
ASPI
Q4 25
$51.0K
$-47.4M
Q3 25
$3.8M
$-12.0M
Q2 25
$1.9M
Q1 25
$-4.1M
Q4 24
$970.0K
Q3 24
$3.2M
Q2 24
$-1.0M
Q1 24
$-1.3M
FCF Margin
APT
APT
ASPI
ASPI
Q4 25
0.4%
-284.7%
Q3 25
25.9%
-245.5%
Q2 25
11.7%
Q1 25
-29.6%
Q4 24
7.0%
Q3 24
22.3%
Q2 24
-6.2%
Q1 24
-9.3%
Capex Intensity
APT
APT
ASPI
ASPI
Q4 25
1.9%
57.9%
Q3 25
0.7%
64.4%
Q2 25
0.8%
Q1 25
1.0%
Q4 24
10.4%
Q3 24
15.1%
Q2 24
0.8%
Q1 24
0.6%
Cash Conversion
APT
APT
ASPI
ASPI
Q4 25
0.46×
Q3 25
4.02×
Q2 25
1.68×
Q1 25
-6.46×
Q4 24
2.85×
Q3 24
6.18×
Q2 24
-0.53×
Q1 24
-2.03×

Financial Flow Comparison

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

Revenue Breakdown by Segment

APT
APT

Other$7.3M53%
Disposable Protective Apparel$6.6M47%

ASPI
ASPI

Segment breakdown not available.

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