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Side-by-side financial comparison of INNOSPEC INC. (IOSP) and SUBURBAN PROPANE PARTNERS LP (SPH). Click either name above to swap in a different company.

INNOSPEC INC. is the larger business by last-quarter revenue ($455.6M vs $370.4M, roughly 1.2× SUBURBAN PROPANE PARTNERS LP). SUBURBAN PROPANE PARTNERS LP runs the higher net margin — 12.4% vs 10.4%, a 2.0% gap on every dollar of revenue. On growth, SUBURBAN PROPANE PARTNERS LP posted the faster year-over-year revenue change (-0.8% vs -2.4%). INNOSPEC INC. produced more free cash flow last quarter ($46.8M vs $-67.5M). Over the past eight quarters, INNOSPEC INC.'s revenue compounded faster (-4.6% CAGR vs -13.8%).

Innospec Inc., formerly known as Octel Corporation and Associated Octel Company, Ltd., is an American specialty chemical company. It comprises three business units:The Performance Chemicals business trades in the personal care, home care, agrochemical, mining and industrial markets. The Fuel Specialties business specializes in manufacturing and supplying fuel additives. The Oilfield Services business supplies drilling, completion and production chemicals.

Suburban Propane Partners LP is a leading U.S. distributor of propane, natural gas, heating oil and related energy products, serving residential, commercial, industrial and agricultural customers across the country. It also provides HVAC system installation, maintenance and repair services, catering mainly to suburban and off-grid communities.

IOSP vs SPH — Head-to-Head

Bigger by revenue
IOSP
IOSP
1.2× larger
IOSP
$455.6M
$370.4M
SPH
Growing faster (revenue YoY)
SPH
SPH
+1.6% gap
SPH
-0.8%
-2.4%
IOSP
Higher net margin
SPH
SPH
2.0% more per $
SPH
12.4%
10.4%
IOSP
More free cash flow
IOSP
IOSP
$114.3M more FCF
IOSP
$46.8M
$-67.5M
SPH
Faster 2-yr revenue CAGR
IOSP
IOSP
Annualised
IOSP
-4.6%
-13.8%
SPH

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
IOSP
IOSP
SPH
SPH
Revenue
$455.6M
$370.4M
Net Profit
$47.4M
$45.8M
Gross Margin
28.0%
64.7%
Operating Margin
10.3%
18.3%
Net Margin
10.4%
12.4%
Revenue YoY
-2.4%
-0.8%
Net Profit YoY
167.3%
135.7%
EPS (diluted)
$1.90
$0.69

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
IOSP
IOSP
SPH
SPH
Q4 25
$455.6M
$370.4M
Q3 25
$441.9M
$211.4M
Q2 25
$439.7M
$260.1M
Q1 25
$440.8M
$587.7M
Q4 24
$466.8M
$373.3M
Q3 24
$443.4M
$208.6M
Q2 24
$435.0M
$254.6M
Q1 24
$500.2M
$498.1M
Net Profit
IOSP
IOSP
SPH
SPH
Q4 25
$47.4M
$45.8M
Q3 25
$12.9M
$-35.1M
Q2 25
$23.5M
$-14.8M
Q1 25
$32.8M
$137.1M
Q4 24
$-70.4M
$19.4M
Q3 24
$33.4M
$-44.6M
Q2 24
$31.2M
$-17.2M
Q1 24
$41.4M
$111.5M
Gross Margin
IOSP
IOSP
SPH
SPH
Q4 25
28.0%
64.7%
Q3 25
26.4%
64.7%
Q2 25
28.0%
61.7%
Q1 25
28.4%
58.8%
Q4 24
29.2%
60.6%
Q3 24
28.0%
59.4%
Q2 24
29.2%
62.9%
Q1 24
31.1%
61.8%
Operating Margin
IOSP
IOSP
SPH
SPH
Q4 25
10.3%
18.3%
Q3 25
1.3%
-7.9%
Q2 25
7.8%
2.1%
Q1 25
9.6%
27.0%
Q4 24
8.8%
15.8%
Q3 24
10.3%
-10.8%
Q2 24
9.4%
3.2%
Q1 24
10.1%
27.5%
Net Margin
IOSP
IOSP
SPH
SPH
Q4 25
10.4%
12.4%
Q3 25
2.9%
-16.6%
Q2 25
5.3%
-5.7%
Q1 25
7.4%
23.3%
Q4 24
-15.1%
5.2%
Q3 24
7.5%
-21.4%
Q2 24
7.2%
-6.8%
Q1 24
8.3%
22.4%
EPS (diluted)
IOSP
IOSP
SPH
SPH
Q4 25
$1.90
$0.69
Q3 25
$0.52
$-0.55
Q2 25
$0.94
$-0.23
Q1 25
$1.31
$2.10
Q4 24
$-2.80
$0.30
Q3 24
$1.33
$-0.69
Q2 24
$1.24
$-0.27
Q1 24
$1.65
$1.72

Balance Sheet & Financial Strength

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

Metric
IOSP
IOSP
SPH
SPH
Cash + ST InvestmentsLiquidity on hand
$292.5M
$1.3M
Total DebtLower is stronger
$1.3B
Stockholders' EquityBook value
$1.3B
Total Assets
$1.8B
$2.4B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
IOSP
IOSP
SPH
SPH
Q4 25
$292.5M
$1.3M
Q3 25
$270.8M
$405.0K
Q2 25
$266.6M
$1.3M
Q1 25
$299.8M
$3.9M
Q4 24
$289.2M
$4.4M
Q3 24
$303.8M
$3.2M
Q2 24
$240.2M
$4.9M
Q1 24
$270.1M
$4.4M
Total Debt
IOSP
IOSP
SPH
SPH
Q4 25
$1.3B
Q3 25
$1.2B
Q2 25
$1.2B
Q1 25
$1.3B
Q4 24
$1.3B
Q3 24
$1.2B
Q2 24
$1.2B
Q1 24
$1.2B
Stockholders' Equity
IOSP
IOSP
SPH
SPH
Q4 25
$1.3B
Q3 25
$1.3B
Q2 25
$1.3B
Q1 25
$1.3B
Q4 24
$1.2B
Q3 24
$1.2B
Q2 24
$1.2B
Q1 24
$1.2B
Total Assets
IOSP
IOSP
SPH
SPH
Q4 25
$1.8B
$2.4B
Q3 25
$1.8B
$2.3B
Q2 25
$1.8B
$2.3B
Q1 25
$1.8B
$2.4B
Q4 24
$1.7B
$2.4B
Q3 24
$1.8B
$2.3B
Q2 24
$1.7B
$2.3B
Q1 24
$1.7B
$2.3B

Cash Flow & Capital Efficiency

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

Metric
IOSP
IOSP
SPH
SPH
Operating Cash FlowLast quarter
$61.4M
$-47.7M
Free Cash FlowOCF − Capex
$46.8M
$-67.5M
FCF MarginFCF / Revenue
10.3%
-18.2%
Capex IntensityCapex / Revenue
3.2%
5.3%
Cash ConversionOCF / Net Profit
1.30×
-1.04×
TTM Free Cash FlowTrailing 4 quarters
$88.0M
$61.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
IOSP
IOSP
SPH
SPH
Q4 25
$61.4M
$-47.7M
Q3 25
$39.3M
$41.8M
Q2 25
$9.3M
$95.5M
Q1 25
$28.3M
$40.1M
Q4 24
$25.7M
$8.8M
Q3 24
$73.5M
$36.8M
Q2 24
$4.7M
$61.4M
Q1 24
$80.6M
$75.1M
Free Cash Flow
IOSP
IOSP
SPH
SPH
Q4 25
$46.8M
$-67.5M
Q3 25
$25.0M
$27.7M
Q2 25
$-3.7M
$80.9M
Q1 25
$19.9M
$20.8M
Q4 24
$13.6M
$-15.1M
Q3 24
$65.8M
$17.7M
Q2 24
$-6.2M
$46.8M
Q1 24
$69.9M
$60.6M
FCF Margin
IOSP
IOSP
SPH
SPH
Q4 25
10.3%
-18.2%
Q3 25
5.7%
13.1%
Q2 25
-0.8%
31.1%
Q1 25
4.5%
3.5%
Q4 24
2.9%
-4.0%
Q3 24
14.8%
8.5%
Q2 24
-1.4%
18.4%
Q1 24
14.0%
12.2%
Capex Intensity
IOSP
IOSP
SPH
SPH
Q4 25
3.2%
5.3%
Q3 25
3.2%
6.7%
Q2 25
3.0%
5.6%
Q1 25
1.9%
3.3%
Q4 24
2.6%
6.4%
Q3 24
1.7%
9.1%
Q2 24
2.5%
5.8%
Q1 24
2.1%
2.9%
Cash Conversion
IOSP
IOSP
SPH
SPH
Q4 25
1.30×
-1.04×
Q3 25
3.05×
Q2 25
0.40×
Q1 25
0.86×
0.29×
Q4 24
0.45×
Q3 24
2.20×
Q2 24
0.15×
Q1 24
1.95×
0.67×

Financial Flow Comparison

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

Revenue Breakdown by Segment

IOSP
IOSP

Refinery And Performance$147.0M32%
Personal Care$99.7M22%
Oilfield Services$93.1M20%
Other Fuel Specialties$47.1M10%
Other Performance Chemicals$40.0M9%
Home Care$28.7M6%

SPH
SPH

Propane$326.4M88%
Other Sales Revenue Net$19.9M5%
Fuel Oil And Refined Fuels$18.2M5%
Natural Gas And Electricity$5.9M2%
Wholesale$4.1M1%

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