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Side-by-side financial comparison of FEDERAL SIGNAL CORP (FSS) and INNOSPEC INC. (IOSP). Click either name above to swap in a different company.
FEDERAL SIGNAL CORP is the larger business by last-quarter revenue ($597.1M vs $455.6M, roughly 1.3× INNOSPEC INC.). INNOSPEC INC. runs the higher net margin — 10.4% vs 10.2%, a 0.2% gap on every dollar of revenue. On growth, FEDERAL SIGNAL CORP posted the faster year-over-year revenue change (26.5% vs -2.4%). FEDERAL SIGNAL CORP produced more free cash flow last quarter ($89.5M vs $46.8M). Over the past eight quarters, FEDERAL SIGNAL CORP's revenue compounded faster (18.5% CAGR vs -4.6%).
The Federal Signal Company was an American manufacturer of railway signaling equipment in the early 20th century. It was located in Albany, New York.
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.
FSS vs IOSP — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $597.1M | $455.6M |
| Net Profit | $60.8M | $47.4M |
| Gross Margin | 28.4% | 28.0% |
| Operating Margin | 14.0% | 10.3% |
| Net Margin | 10.2% | 10.4% |
| Revenue YoY | 26.5% | -2.4% |
| Net Profit YoY | 21.6% | 167.3% |
| EPS (diluted) | $0.99 | $1.90 |
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.
| Q4 25 | $597.1M | $455.6M | ||
| Q3 25 | $555.0M | $441.9M | ||
| Q2 25 | $564.6M | $439.7M | ||
| Q1 25 | $463.8M | $440.8M | ||
| Q4 24 | $472.0M | $466.8M | ||
| Q3 24 | $474.2M | $443.4M | ||
| Q2 24 | $490.4M | $435.0M | ||
| Q1 24 | $424.9M | $500.2M |
| Q4 25 | $60.8M | $47.4M | ||
| Q3 25 | $68.1M | $12.9M | ||
| Q2 25 | $71.4M | $23.5M | ||
| Q1 25 | $46.3M | $32.8M | ||
| Q4 24 | $50.0M | $-70.4M | ||
| Q3 24 | $53.9M | $33.4M | ||
| Q2 24 | $60.8M | $31.2M | ||
| Q1 24 | $51.6M | $41.4M |
| Q4 25 | 28.4% | 28.0% | ||
| Q3 25 | 29.1% | 26.4% | ||
| Q2 25 | 30.0% | 28.0% | ||
| Q1 25 | 28.2% | 28.4% | ||
| Q4 24 | 28.1% | 29.2% | ||
| Q3 24 | 29.6% | 28.0% | ||
| Q2 24 | 29.4% | 29.2% | ||
| Q1 24 | 27.3% | 31.1% |
| Q4 25 | 14.0% | 10.3% | ||
| Q3 25 | 16.9% | 1.3% | ||
| Q2 25 | 17.3% | 7.8% | ||
| Q1 25 | 14.2% | 9.6% | ||
| Q4 24 | 14.9% | 8.8% | ||
| Q3 24 | 16.0% | 10.3% | ||
| Q2 24 | 16.5% | 9.4% | ||
| Q1 24 | 12.8% | 10.1% |
| Q4 25 | 10.2% | 10.4% | ||
| Q3 25 | 12.3% | 2.9% | ||
| Q2 25 | 12.6% | 5.3% | ||
| Q1 25 | 10.0% | 7.4% | ||
| Q4 24 | 10.6% | -15.1% | ||
| Q3 24 | 11.4% | 7.5% | ||
| Q2 24 | 12.4% | 7.2% | ||
| Q1 24 | 12.1% | 8.3% |
| Q4 25 | $0.99 | $1.90 | ||
| Q3 25 | $1.11 | $0.52 | ||
| Q2 25 | $1.16 | $0.94 | ||
| Q1 25 | $0.75 | $1.31 | ||
| Q4 24 | $0.80 | $-2.80 | ||
| Q3 24 | $0.87 | $1.33 | ||
| Q2 24 | $0.99 | $1.24 | ||
| Q1 24 | $0.84 | $1.65 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $63.7M | $292.5M |
| Total DebtLower is stronger | $564.6M | — |
| Stockholders' EquityBook value | $1.4B | $1.3B |
| Total Assets | $2.4B | $1.8B |
| Debt / EquityLower = less leverage | 0.41× | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $63.7M | $292.5M | ||
| Q3 25 | $54.4M | $270.8M | ||
| Q2 25 | $64.7M | $266.6M | ||
| Q1 25 | $57.5M | $299.8M | ||
| Q4 24 | $91.1M | $289.2M | ||
| Q3 24 | $73.7M | $303.8M | ||
| Q2 24 | $48.6M | $240.2M | ||
| Q1 24 | $48.9M | $270.1M |
| Q4 25 | $564.6M | — | ||
| Q3 25 | $201.2M | — | ||
| Q2 25 | $258.3M | — | ||
| Q1 25 | $266.9M | — | ||
| Q4 24 | $204.4M | — | ||
| Q3 24 | $223.3M | — | ||
| Q2 24 | $248.8M | — | ||
| Q1 24 | $266.8M | — |
| Q4 25 | $1.4B | $1.3B | ||
| Q3 25 | $1.3B | $1.3B | ||
| Q2 25 | $1.3B | $1.3B | ||
| Q1 25 | $1.2B | $1.3B | ||
| Q4 24 | $1.2B | $1.2B | ||
| Q3 24 | $1.1B | $1.2B | ||
| Q2 24 | $1.1B | $1.2B | ||
| Q1 24 | $1.0B | $1.2B |
| Q4 25 | $2.4B | $1.8B | ||
| Q3 25 | $1.9B | $1.8B | ||
| Q2 25 | $1.9B | $1.8B | ||
| Q1 25 | $1.9B | $1.8B | ||
| Q4 24 | $1.8B | $1.7B | ||
| Q3 24 | $1.7B | $1.8B | ||
| Q2 24 | $1.7B | $1.7B | ||
| Q1 24 | $1.7B | $1.7B |
| Q4 25 | 0.41× | — | ||
| Q3 25 | 0.15× | — | ||
| Q2 25 | 0.20× | — | ||
| Q1 25 | 0.22× | — | ||
| Q4 24 | 0.17× | — | ||
| Q3 24 | 0.19× | — | ||
| Q2 24 | 0.23× | — | ||
| Q1 24 | 0.26× | — |
Cash Flow & Capital Efficiency
How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.
| Metric | | |
|---|---|---|
| Operating Cash FlowLast quarter | $97.2M | $61.4M |
| Free Cash FlowOCF − Capex | $89.5M | $46.8M |
| FCF MarginFCF / Revenue | 15.0% | 10.3% |
| Capex IntensityCapex / Revenue | 1.3% | 3.2% |
| Cash ConversionOCF / Net Profit | 1.60× | 1.30× |
| TTM Free Cash FlowTrailing 4 quarters | $227.1M | $88.0M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $97.2M | $61.4M | ||
| Q3 25 | $61.1M | $39.3M | ||
| Q2 25 | $59.7M | $9.3M | ||
| Q1 25 | $36.7M | $28.3M | ||
| Q4 24 | $90.6M | $25.7M | ||
| Q3 24 | $68.8M | $73.5M | ||
| Q2 24 | $40.6M | $4.7M | ||
| Q1 24 | $31.3M | $80.6M |
| Q4 25 | $89.5M | $46.8M | ||
| Q3 25 | $54.1M | $25.0M | ||
| Q2 25 | $52.4M | $-3.7M | ||
| Q1 25 | $31.1M | $19.9M | ||
| Q4 24 | $82.1M | $13.6M | ||
| Q3 24 | $60.9M | $65.8M | ||
| Q2 24 | $24.8M | $-6.2M | ||
| Q1 24 | $22.9M | $69.9M |
| Q4 25 | 15.0% | 10.3% | ||
| Q3 25 | 9.7% | 5.7% | ||
| Q2 25 | 9.3% | -0.8% | ||
| Q1 25 | 6.7% | 4.5% | ||
| Q4 24 | 17.4% | 2.9% | ||
| Q3 24 | 12.8% | 14.8% | ||
| Q2 24 | 5.1% | -1.4% | ||
| Q1 24 | 5.4% | 14.0% |
| Q4 25 | 1.3% | 3.2% | ||
| Q3 25 | 1.3% | 3.2% | ||
| Q2 25 | 1.3% | 3.0% | ||
| Q1 25 | 1.2% | 1.9% | ||
| Q4 24 | 1.8% | 2.6% | ||
| Q3 24 | 1.7% | 1.7% | ||
| Q2 24 | 3.2% | 2.5% | ||
| Q1 24 | 2.0% | 2.1% |
| Q4 25 | 1.60× | 1.30× | ||
| Q3 25 | 0.90× | 3.05× | ||
| Q2 25 | 0.84× | 0.40× | ||
| Q1 25 | 0.79× | 0.86× | ||
| Q4 24 | 1.81× | — | ||
| Q3 24 | 1.28× | 2.20× | ||
| Q2 24 | 0.67× | 0.15× | ||
| Q1 24 | 0.61× | 1.95× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
FSS
| Vehiclesandequipment | $403.4M | 68% |
| Parts | $66.8M | 11% |
| Publicsafetyandsecurityequipment | $62.2M | 10% |
| Rentalincome | $19.0M | 3% |
| Industrialsignalingequipment | $18.2M | 3% |
| Other | $14.9M | 2% |
| Warningsystems | $12.6M | 2% |
IOSP
| Refinery And Performance | $147.0M | 32% |
| Personal Care | $99.7M | 22% |
| Oilfield Services | $93.1M | 20% |
| Other Fuel Specialties | $47.1M | 10% |
| Other Performance Chemicals | $40.0M | 9% |
| Home Care | $28.7M | 6% |
