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Side-by-side financial comparison of FOSTER L B CO (FSTR) and Iridium Communications Inc. (IRDM). Click either name above to swap in a different company.
Iridium Communications Inc. is the larger business by last-quarter revenue ($219.1M vs $160.4M, roughly 1.4× FOSTER L B CO). Iridium Communications Inc. runs the higher net margin — 9.9% vs 1.5%, a 8.4% gap on every dollar of revenue. On growth, FOSTER L B CO posted the faster year-over-year revenue change (25.1% vs 1.9%). Over the past eight quarters, FOSTER L B CO's revenue compounded faster (13.6% CAGR vs 4.4%).
Foster L B Co. is a U.S.-headquartered industrial manufacturing firm that develops, produces and distributes engineered access solutions, construction components, and rail infrastructure products. It serves commercial construction, transportation, and industrial end markets across North America and selected international regions.
Iridium Communications Inc. is a publicly traded American company headquartered in McLean, Virginia, United States. Iridium operates the Iridium satellite constellation, a system of 80 satellites: 66 are active satellites and the remaining fourteen function as in-orbit spares. Iridium Satellites are used for worldwide voice and data communication from handheld satellite phones, satellite messenger communication devices and integrated transceivers, as well as for two-way satellite messaging se...
FSTR vs IRDM — Head-to-Head
Income Statement — Q4 FY2025 vs Q1 FY2026
| Metric | | |
|---|---|---|
| Revenue | $160.4M | $219.1M |
| Net Profit | $2.4M | $21.6M |
| Gross Margin | 19.7% | — |
| Operating Margin | 4.9% | 23.2% |
| Net Margin | 1.5% | 9.9% |
| Revenue YoY | 25.1% | 1.9% |
| Net Profit YoY | 1098.3% | — |
| EPS (diluted) | $0.22 | — |
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.
| Q1 26 | — | $219.1M | ||
| Q4 25 | $160.4M | $212.9M | ||
| Q3 25 | $138.3M | $226.9M | ||
| Q2 25 | $143.6M | $216.9M | ||
| Q1 25 | $97.8M | $214.9M | ||
| Q4 24 | $128.2M | $213.0M | ||
| Q3 24 | $137.5M | $212.8M | ||
| Q2 24 | $140.8M | $201.1M |
| Q1 26 | — | $21.6M | ||
| Q4 25 | $2.4M | $24.9M | ||
| Q3 25 | $4.4M | $37.1M | ||
| Q2 25 | $2.9M | $22.0M | ||
| Q1 25 | $-2.1M | $30.4M | ||
| Q4 24 | $-242.0K | $36.3M | ||
| Q3 24 | $35.9M | $24.4M | ||
| Q2 24 | $2.8M | $32.3M |
| Q1 26 | — | — | ||
| Q4 25 | 19.7% | — | ||
| Q3 25 | 22.5% | — | ||
| Q2 25 | 21.5% | — | ||
| Q1 25 | 20.6% | — | ||
| Q4 24 | 22.3% | — | ||
| Q3 24 | 23.8% | — | ||
| Q2 24 | 21.7% | — |
| Q1 26 | — | 23.2% | ||
| Q4 25 | 4.9% | 25.9% | ||
| Q3 25 | 6.0% | 30.9% | ||
| Q2 25 | 5.3% | 23.2% | ||
| Q1 25 | -2.0% | 28.1% | ||
| Q4 24 | 2.4% | 24.5% | ||
| Q3 24 | 5.3% | 25.8% | ||
| Q2 24 | 3.2% | 21.7% |
| Q1 26 | — | 9.9% | ||
| Q4 25 | 1.5% | 11.7% | ||
| Q3 25 | 3.1% | 16.4% | ||
| Q2 25 | 2.0% | 10.1% | ||
| Q1 25 | -2.2% | 14.2% | ||
| Q4 24 | -0.2% | 17.1% | ||
| Q3 24 | 26.1% | 11.5% | ||
| Q2 24 | 2.0% | 16.1% |
| Q1 26 | — | — | ||
| Q4 25 | $0.22 | $0.24 | ||
| Q3 25 | $0.40 | $0.35 | ||
| Q2 25 | $0.27 | $0.20 | ||
| Q1 25 | $-0.20 | $0.27 | ||
| Q4 24 | $-0.04 | $0.30 | ||
| Q3 24 | $3.27 | $0.21 | ||
| Q2 24 | $0.26 | $0.27 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $4.3M | — |
| Total DebtLower is stronger | $42.6M | — |
| Stockholders' EquityBook value | $175.3M | — |
| Total Assets | $330.4M | — |
| Debt / EquityLower = less leverage | 0.24× | — |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | — | — | ||
| Q4 25 | $4.3M | $96.5M | ||
| Q3 25 | $3.4M | $88.5M | ||
| Q2 25 | $4.2M | $79.3M | ||
| Q1 25 | $2.6M | $50.9M | ||
| Q4 24 | $2.5M | $93.5M | ||
| Q3 24 | $3.1M | $159.6M | ||
| Q2 24 | $4.0M | $63.5M |
| Q1 26 | — | — | ||
| Q4 25 | $42.6M | $1.8B | ||
| Q3 25 | $58.6M | — | ||
| Q2 25 | $81.4M | — | ||
| Q1 25 | $82.3M | — | ||
| Q4 24 | $46.8M | $1.8B | ||
| Q3 24 | $68.4M | — | ||
| Q2 24 | $87.0M | — |
| Q1 26 | — | — | ||
| Q4 25 | $175.3M | $462.6M | ||
| Q3 25 | $174.8M | $450.5M | ||
| Q2 25 | $174.4M | $473.6M | ||
| Q1 25 | $170.8M | $518.4M | ||
| Q4 24 | $178.3M | $576.6M | ||
| Q3 24 | $181.9M | $663.8M | ||
| Q2 24 | $147.1M | $786.7M |
| Q1 26 | — | — | ||
| Q4 25 | $330.4M | $2.5B | ||
| Q3 25 | $333.9M | $2.6B | ||
| Q2 25 | $349.9M | $2.6B | ||
| Q1 25 | $342.8M | $2.6B | ||
| Q4 24 | $334.6M | $2.7B | ||
| Q3 24 | $344.5M | $2.8B | ||
| Q2 24 | $333.3M | $2.7B |
| Q1 26 | — | — | ||
| Q4 25 | 0.24× | 3.80× | ||
| Q3 25 | 0.33× | — | ||
| Q2 25 | 0.47× | — | ||
| Q1 25 | 0.48× | — | ||
| Q4 24 | 0.26× | 3.05× | ||
| Q3 24 | 0.38× | — | ||
| Q2 24 | 0.59× | — |
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 | $22.2M | — |
| Free Cash FlowOCF − Capex | $19.8M | — |
| FCF MarginFCF / Revenue | 12.3% | — |
| Capex IntensityCapex / Revenue | 1.5% | 13.7% |
| Cash ConversionOCF / Net Profit | 9.18× | — |
| TTM Free Cash FlowTrailing 4 quarters | $25.2M | — |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | — | — | ||
| Q4 25 | $22.2M | $108.6M | ||
| Q3 25 | $29.2M | $100.8M | ||
| Q2 25 | $10.4M | $129.6M | ||
| Q1 25 | $-26.1M | $61.1M | ||
| Q4 24 | $24.3M | $104.8M | ||
| Q3 24 | $24.7M | $118.6M | ||
| Q2 24 | $-5.0M | $81.1M |
| Q1 26 | — | — | ||
| Q4 25 | $19.8M | $75.1M | ||
| Q3 25 | $26.4M | $79.2M | ||
| Q2 25 | $7.7M | $108.9M | ||
| Q1 25 | $-28.7M | $36.5M | ||
| Q4 24 | $22.3M | $80.5M | ||
| Q3 24 | $21.7M | $100.0M | ||
| Q2 24 | $-7.0M | $68.7M |
| Q1 26 | — | — | ||
| Q4 25 | 12.3% | 35.3% | ||
| Q3 25 | 19.1% | 34.9% | ||
| Q2 25 | 5.4% | 50.2% | ||
| Q1 25 | -29.4% | 17.0% | ||
| Q4 24 | 17.4% | 37.8% | ||
| Q3 24 | 15.8% | 47.0% | ||
| Q2 24 | -5.0% | 34.2% |
| Q1 26 | — | 13.7% | ||
| Q4 25 | 1.5% | 15.7% | ||
| Q3 25 | 2.0% | 9.5% | ||
| Q2 25 | 1.9% | 9.5% | ||
| Q1 25 | 2.6% | 11.4% | ||
| Q4 24 | 1.5% | 11.4% | ||
| Q3 24 | 2.2% | 8.7% | ||
| Q2 24 | 1.5% | 6.2% |
| Q1 26 | — | — | ||
| Q4 25 | 9.18× | 4.37× | ||
| Q3 25 | 6.70× | 2.71× | ||
| Q2 25 | 3.61× | 5.90× | ||
| Q1 25 | — | 2.01× | ||
| Q4 24 | — | 2.88× | ||
| Q3 24 | 0.69× | 4.85× | ||
| Q2 24 | -1.74× | 2.51× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
FSTR
| Rail Technologies And Services Segment | $98.0M | 61% |
| Over Time Output Method | $26.3M | 16% |
| Services | $19.4M | 12% |
| Rail Technologies Products | $10.0M | 6% |
| Over Time Input Method | $8.3M | 5% |
IRDM
| Voice and data | $57.4M | 26% |
| IoT data (2) | $46.0M | 21% |
| Government | $39.5M | 18% |
| Government service revenue (5) | $27.6M | 13% |
| Subscriber equipment | $20.2M | 9% |
| Hosted payload and other data service (4) | $14.8M | 7% |
| Broadband (3) | $12.2M | 6% |
| Commercial | $1.3M | 1% |
