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Side-by-side financial comparison of MUELLER INDUSTRIES INC (MLI) and MSA Safety Inc (MSA). Click either name above to swap in a different company.

MUELLER INDUSTRIES INC is the larger business by last-quarter revenue ($962.4M vs $510.9M, roughly 1.9× MSA Safety Inc). MSA Safety Inc runs the higher net margin — 17.0% vs 16.0%, a 1.0% gap on every dollar of revenue. On growth, MUELLER INDUSTRIES INC posted the faster year-over-year revenue change (4.2% vs 2.2%). MUELLER INDUSTRIES INC produced more free cash flow last quarter ($121.4M vs $106.0M). Over the past eight quarters, MSA Safety Inc's revenue compounded faster (11.2% CAGR vs 6.4%).

Mueller Industries is an American manufacturing company that specializes in piping, industrial metals and climate machinery. It was founded in 1917 and is included on the Fortune 1000 list in 2022. The head office of the company is located in Memphis, Tennessee. Mueller Industries, Inc. is a multi-billion dollar revenue company that is publicly traded.

Mine Safety Appliances, or MSA Safety Incorporated, is an American manufacturer and supplier of safety equipment designed for use in a variety of hazardous conditions in industries such as construction, the military, fire service, and chemical, oil, and gas production. MSA is based in the Pittsburgh suburb of Cranberry.

MLI vs MSA — Head-to-Head

Bigger by revenue
MLI
MLI
1.9× larger
MLI
$962.4M
$510.9M
MSA
Growing faster (revenue YoY)
MLI
MLI
+2.0% gap
MLI
4.2%
2.2%
MSA
Higher net margin
MSA
MSA
1.0% more per $
MSA
17.0%
16.0%
MLI
More free cash flow
MLI
MLI
$15.4M more FCF
MLI
$121.4M
$106.0M
MSA
Faster 2-yr revenue CAGR
MSA
MSA
Annualised
MSA
11.2%
6.4%
MLI

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MLI
MLI
MSA
MSA
Revenue
$962.4M
$510.9M
Net Profit
$153.7M
$86.9M
Gross Margin
46.9%
Operating Margin
17.9%
22.3%
Net Margin
16.0%
17.0%
Revenue YoY
4.2%
2.2%
Net Profit YoY
11.7%
-1.2%
EPS (diluted)
$1.37
$2.22

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
MLI
MLI
MSA
MSA
Q4 25
$962.4M
$510.9M
Q3 25
$1.1B
$468.4M
Q2 25
$1.1B
$474.1M
Q1 25
$1.0B
$421.3M
Q4 24
$923.5M
$499.7M
Q3 24
$997.8M
$432.7M
Q2 24
$997.7M
$462.5M
Q1 24
$849.7M
$413.3M
Net Profit
MLI
MLI
MSA
MSA
Q4 25
$153.7M
$86.9M
Q3 25
$208.1M
$69.6M
Q2 25
$245.9M
$62.8M
Q1 25
$157.4M
$59.6M
Q4 24
$137.7M
$87.9M
Q3 24
$168.7M
$66.6M
Q2 24
$160.2M
$72.2M
Q1 24
$138.4M
$58.1M
Gross Margin
MLI
MLI
MSA
MSA
Q4 25
46.9%
Q3 25
46.5%
Q2 25
46.6%
Q1 25
45.9%
Q4 24
46.9%
Q3 24
27.6%
47.9%
Q2 24
27.3%
48.2%
Q1 24
28.4%
47.3%
Operating Margin
MLI
MLI
MSA
MSA
Q4 25
17.9%
22.3%
Q3 25
25.6%
20.1%
Q2 25
26.7%
18.1%
Q1 25
20.6%
18.5%
Q4 24
18.4%
23.5%
Q3 24
20.7%
21.1%
Q2 24
21.0%
21.6%
Q1 24
21.6%
19.4%
Net Margin
MLI
MLI
MSA
MSA
Q4 25
16.0%
17.0%
Q3 25
19.3%
14.9%
Q2 25
21.6%
13.2%
Q1 25
15.7%
14.1%
Q4 24
14.9%
17.6%
Q3 24
16.9%
15.4%
Q2 24
16.1%
15.6%
Q1 24
16.3%
14.1%
EPS (diluted)
MLI
MLI
MSA
MSA
Q4 25
$1.37
$2.22
Q3 25
$1.88
$1.77
Q2 25
$2.22
$1.59
Q1 25
$1.39
$1.51
Q4 24
$1.21
$2.22
Q3 24
$1.48
$1.69
Q2 24
$1.41
$1.83
Q1 24
$1.21
$1.47

Balance Sheet & Financial Strength

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

Metric
MLI
MLI
MSA
MSA
Cash + ST InvestmentsLiquidity on hand
$1.4B
$165.1M
Total DebtLower is stronger
$580.9M
Stockholders' EquityBook value
$3.2B
$1.4B
Total Assets
$3.7B
$2.6B
Debt / EquityLower = less leverage
0.42×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MLI
MLI
MSA
MSA
Q4 25
$1.4B
$165.1M
Q3 25
$1.3B
$170.0M
Q2 25
$1.1B
$147.0M
Q1 25
$873.6M
$170.6M
Q4 24
$1.1B
$164.6M
Q3 24
$969.6M
$154.4M
Q2 24
$825.7M
$146.8M
Q1 24
$1.4B
$148.3M
Total Debt
MLI
MLI
MSA
MSA
Q4 25
$580.9M
Q3 25
$628.6M
Q2 25
$679.3M
Q1 25
$502.1M
Q4 24
$508.0M
Q3 24
$554.7M
Q2 24
$588.2M
Q1 24
$596.2M
Stockholders' Equity
MLI
MLI
MSA
MSA
Q4 25
$3.2B
$1.4B
Q3 25
$3.1B
$1.3B
Q2 25
$2.9B
$1.3B
Q1 25
$2.7B
$1.2B
Q4 24
$2.8B
$1.1B
Q3 24
$2.7B
$1.1B
Q2 24
$2.5B
$1.0B
Q1 24
$2.4B
$994.8M
Total Assets
MLI
MLI
MSA
MSA
Q4 25
$3.7B
$2.6B
Q3 25
$3.7B
$2.6B
Q2 25
$3.5B
$2.6B
Q1 25
$3.2B
$2.2B
Q4 24
$3.3B
$2.2B
Q3 24
$3.2B
$2.2B
Q2 24
$3.1B
$2.2B
Q1 24
$2.9B
$2.2B
Debt / Equity
MLI
MLI
MSA
MSA
Q4 25
0.42×
Q3 25
0.48×
Q2 25
0.54×
Q1 25
0.42×
Q4 24
0.44×
Q3 24
0.51×
Q2 24
0.57×
Q1 24
0.60×

Cash Flow & Capital Efficiency

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

Metric
MLI
MLI
MSA
MSA
Operating Cash FlowLast quarter
$141.2M
$122.4M
Free Cash FlowOCF − Capex
$121.4M
$106.0M
FCF MarginFCF / Revenue
12.6%
20.8%
Capex IntensityCapex / Revenue
2.1%
3.2%
Cash ConversionOCF / Net Profit
0.92×
1.41×
TTM Free Cash FlowTrailing 4 quarters
$686.6M
$295.4M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MLI
MLI
MSA
MSA
Q4 25
$141.2M
$122.4M
Q3 25
$310.1M
$112.5M
Q2 25
$190.6M
$67.2M
Q1 25
$113.6M
$61.8M
Q4 24
$140.1M
$107.9M
Q3 24
$231.4M
$84.3M
Q2 24
$100.8M
$53.3M
Q1 24
$173.6M
$50.9M
Free Cash Flow
MLI
MLI
MSA
MSA
Q4 25
$121.4M
$106.0M
Q3 25
$291.8M
$100.5M
Q2 25
$176.5M
$37.9M
Q1 25
$97.0M
$51.0M
Q4 24
$111.2M
$93.5M
Q3 24
$205.7M
$70.1M
Q2 24
$91.6M
$39.0M
Q1 24
$157.2M
$39.7M
FCF Margin
MLI
MLI
MSA
MSA
Q4 25
12.6%
20.8%
Q3 25
27.1%
21.4%
Q2 25
15.5%
8.0%
Q1 25
9.7%
12.1%
Q4 24
12.0%
18.7%
Q3 24
20.6%
16.2%
Q2 24
9.2%
8.4%
Q1 24
18.5%
9.6%
Capex Intensity
MLI
MLI
MSA
MSA
Q4 25
2.1%
3.2%
Q3 25
1.7%
2.6%
Q2 25
1.2%
6.2%
Q1 25
1.7%
2.6%
Q4 24
3.1%
2.9%
Q3 24
2.6%
3.3%
Q2 24
0.9%
3.1%
Q1 24
1.9%
2.7%
Cash Conversion
MLI
MLI
MSA
MSA
Q4 25
0.92×
1.41×
Q3 25
1.49×
1.62×
Q2 25
0.78×
1.07×
Q1 25
0.72×
1.04×
Q4 24
1.02×
1.23×
Q3 24
1.37×
1.27×
Q2 24
0.63×
0.74×
Q1 24
1.25×
0.88×

Financial Flow Comparison

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

Revenue Breakdown by Segment

MLI
MLI

Tube And Fittings$484.6M50%
Industrial Metals$252.2M26%
Valves And Plumbing Specialties$122.5M13%
Flex Duct And Other HVAC Components$80.8M8%
Other Products$14.9M2%

MSA
MSA

Americas Segment$335.2M66%
International Segment$175.7M34%

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