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Side-by-side financial comparison of Koppers Holdings Inc. (KOP) and PLUG POWER INC (PLUG). Click either name above to swap in a different company.
Koppers Holdings Inc. is the larger business by last-quarter revenue ($432.7M vs $225.2M, roughly 1.9× PLUG POWER INC). Koppers Holdings Inc. runs the higher net margin — 6.9% vs -375.6%, a 382.5% gap on every dollar of revenue. On growth, PLUG POWER INC posted the faster year-over-year revenue change (17.6% vs -9.3%). Koppers Holdings Inc. produced more free cash flow last quarter ($28.5M vs $-153.0M). Over the past eight quarters, PLUG POWER INC's revenue compounded faster (36.8% CAGR vs -6.7%).
Koppers is a global chemical and materials company based in Pittsburgh, Pennsylvania, United States. Its headquarters is an art-deco 1920s skyscraper, the Koppers Tower.
Plug Power Inc. is an American company engaged in the development of hydrogen fuel cell and electrolyzer systems that replace conventional batteries in equipment and vehicles powered by electricity. The company is headquartered in Slingerlands, New York, and has facilities in Spokane, Washington, and Rochester, New York.
KOP vs PLUG — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $432.7M | $225.2M |
| Net Profit | $29.7M | $-846.0M |
| Gross Margin | 25.6% | 2.4% |
| Operating Margin | 11.5% | -338.9% |
| Net Margin | 6.9% | -375.6% |
| Revenue YoY | -9.3% | 17.6% |
| Net Profit YoY | 391.2% | 36.7% |
| EPS (diluted) | $1.44 | $-0.70 |
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 | $432.7M | $225.2M | ||
| Q3 25 | $485.3M | $177.1M | ||
| Q2 25 | $504.8M | $174.0M | ||
| Q1 25 | $456.5M | $133.7M | ||
| Q4 24 | $477.0M | $191.5M | ||
| Q3 24 | $554.3M | $173.7M | ||
| Q2 24 | $563.2M | $143.3M | ||
| Q1 24 | $497.6M | $120.3M |
| Q4 25 | $29.7M | $-846.0M | ||
| Q3 25 | $23.8M | $-361.9M | ||
| Q2 25 | $16.4M | $-227.1M | ||
| Q1 25 | $-13.9M | $-196.7M | ||
| Q4 24 | $-10.2M | $-1.3B | ||
| Q3 24 | $22.8M | $-211.2M | ||
| Q2 24 | $26.8M | $-262.3M | ||
| Q1 24 | $13.0M | $-295.8M |
| Q4 25 | 25.6% | 2.4% | ||
| Q3 25 | 24.1% | -67.9% | ||
| Q2 25 | 22.6% | -30.7% | ||
| Q1 25 | 23.2% | -55.3% | ||
| Q4 24 | 17.5% | -122.5% | ||
| Q3 24 | 21.9% | -57.6% | ||
| Q2 24 | 21.6% | -91.6% | ||
| Q1 24 | 19.3% | -132.3% |
| Q4 25 | 11.5% | -338.9% | ||
| Q3 25 | 10.7% | -197.0% | ||
| Q2 25 | 7.7% | -101.7% | ||
| Q1 25 | 5.9% | -133.5% | ||
| Q4 24 | 1.3% | -678.7% | ||
| Q3 24 | 9.0% | -124.4% | ||
| Q2 24 | 10.2% | -170.7% | ||
| Q1 24 | 7.0% | -215.7% |
| Q4 25 | 6.9% | -375.6% | ||
| Q3 25 | 4.9% | -204.4% | ||
| Q2 25 | 3.2% | -130.5% | ||
| Q1 25 | -3.0% | -147.1% | ||
| Q4 24 | -2.1% | -697.5% | ||
| Q3 24 | 4.1% | -121.5% | ||
| Q2 24 | 4.8% | -183.0% | ||
| Q1 24 | 2.6% | -245.9% |
| Q4 25 | $1.44 | $-0.70 | ||
| Q3 25 | $1.17 | $-0.31 | ||
| Q2 25 | $0.81 | $-0.20 | ||
| Q1 25 | $-0.68 | $-0.21 | ||
| Q4 24 | $-0.47 | $-1.61 | ||
| Q3 24 | $1.09 | $-0.25 | ||
| Q2 24 | $1.25 | $-0.36 | ||
| Q1 24 | $0.59 | $-0.46 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | — | $368.5M |
| Total DebtLower is stronger | $928.3M | — |
| Stockholders' EquityBook value | $574.0M | $978.1M |
| Total Assets | $1.9B | $2.6B |
| Debt / EquityLower = less leverage | 1.62× | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | — | $368.5M | ||
| Q3 25 | — | $165.9M | ||
| Q2 25 | — | $140.7M | ||
| Q1 25 | — | $295.8M | ||
| Q4 24 | — | $205.7M | ||
| Q3 24 | — | $93.9M | ||
| Q2 24 | — | $62.4M | ||
| Q1 24 | — | $172.9M |
| Q4 25 | $928.3M | — | ||
| Q3 25 | $932.9M | — | ||
| Q2 25 | $977.5M | — | ||
| Q1 25 | $989.0M | — | ||
| Q4 24 | $939.5M | — | ||
| Q3 24 | $989.4M | $3.9M | ||
| Q2 24 | $1.0B | $3.7M | ||
| Q1 24 | $877.6M | $3.8M |
| Q4 25 | $574.0M | $978.1M | ||
| Q3 25 | $545.6M | $1.4B | ||
| Q2 25 | $526.8M | $1.7B | ||
| Q1 25 | $498.0M | $1.9B | ||
| Q4 24 | $488.7M | $1.7B | ||
| Q3 24 | $532.3M | $3.0B | ||
| Q2 24 | $509.2M | $3.0B | ||
| Q1 24 | $505.8M | $2.9B |
| Q4 25 | $1.9B | $2.6B | ||
| Q3 25 | $1.9B | $3.1B | ||
| Q2 25 | $1.9B | $3.4B | ||
| Q1 25 | $1.9B | $3.6B | ||
| Q4 24 | $1.9B | $3.6B | ||
| Q3 24 | $2.0B | $4.7B | ||
| Q2 24 | $1.9B | $4.8B | ||
| Q1 24 | $1.8B | $4.8B |
| Q4 25 | 1.62× | — | ||
| Q3 25 | 1.71× | — | ||
| Q2 25 | 1.86× | — | ||
| Q1 25 | 1.99× | — | ||
| Q4 24 | 1.92× | — | ||
| Q3 24 | 1.86× | 0.00× | ||
| Q2 24 | 1.97× | 0.00× | ||
| Q1 24 | 1.74× | 0.00× |
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 | $45.1M | $-148.6M |
| Free Cash FlowOCF − Capex | $28.5M | $-153.0M |
| FCF MarginFCF / Revenue | 6.6% | -67.9% |
| Capex IntensityCapex / Revenue | 3.8% | 1.9% |
| Cash ConversionOCF / Net Profit | 1.52× | — |
| TTM Free Cash FlowTrailing 4 quarters | $67.5M | $-647.0M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $45.1M | $-148.6M | ||
| Q3 25 | $49.6M | $-89.8M | ||
| Q2 25 | $50.5M | $-191.8M | ||
| Q1 25 | $-22.7M | $-105.6M | ||
| Q4 24 | $74.7M | $-131.2M | ||
| Q3 24 | $29.8M | $-174.9M | ||
| Q2 24 | $27.2M | $-254.7M | ||
| Q1 24 | $-12.3M | $-167.7M |
| Q4 25 | $28.5M | $-153.0M | ||
| Q3 25 | $37.6M | $-117.5M | ||
| Q2 25 | $38.4M | $-230.4M | ||
| Q1 25 | $-37.0M | $-146.0M | ||
| Q4 24 | $56.1M | $-165.2M | ||
| Q3 24 | $14.4M | $-234.2M | ||
| Q2 24 | $10.1M | $-356.0M | ||
| Q1 24 | $-38.6M | $-260.3M |
| Q4 25 | 6.6% | -67.9% | ||
| Q3 25 | 7.7% | -66.4% | ||
| Q2 25 | 7.6% | -132.5% | ||
| Q1 25 | -8.1% | -109.2% | ||
| Q4 24 | 11.8% | -86.3% | ||
| Q3 24 | 2.6% | -134.8% | ||
| Q2 24 | 1.8% | -248.4% | ||
| Q1 24 | -7.8% | -216.5% |
| Q4 25 | 3.8% | 1.9% | ||
| Q3 25 | 2.5% | 15.6% | ||
| Q2 25 | 2.4% | 22.2% | ||
| Q1 25 | 3.1% | 30.3% | ||
| Q4 24 | 3.9% | 17.7% | ||
| Q3 24 | 2.8% | 34.1% | ||
| Q2 24 | 3.0% | 70.7% | ||
| Q1 24 | 5.3% | 77.0% |
| Q4 25 | 1.52× | — | ||
| Q3 25 | 2.08× | — | ||
| Q2 25 | 3.08× | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | 1.31× | — | ||
| Q2 24 | 1.01× | — | ||
| Q1 24 | -0.95× | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
KOP
| Other | $127.8M | 30% |
| Railroad Treated Products | $119.0M | 28% |
| Utility Poles | $79.8M | 18% |
| Pitch And Related Products | $74.1M | 17% |
| Carbon Black Feedstock And Distillates | $14.4M | 3% |
| Railroad Infrastructure Products And Services | $9.9M | 2% |
| Phthalic Anhydride Naphthalene And Other Chemicals | $7.7M | 2% |
PLUG
| Sales Of Equipment And Related Infrastructure | $111.6M | 50% |
| Services Performed On Fuel Cell Systems And Related Infrastructure | $41.5M | 18% |
| Power Purchase Agreements | $36.1M | 16% |
| Sale Of Cryogenic Equipment | $20.0M | 9% |
| Sales Of Fuel Cell Systems | $11.2M | 5% |
| Other | $4.8M | 2% |
