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Side-by-side financial comparison of Spero Therapeutics, Inc. (SPRO) and Zeo Energy Corp. (ZEO). Click either name above to swap in a different company.
Zeo Energy Corp. is the larger business by last-quarter revenue ($18.6M vs $12.6M, roughly 1.5× Spero Therapeutics, Inc.). Spero Therapeutics, Inc. runs the higher net margin — 250.7% vs -10.8%, a 261.5% gap on every dollar of revenue. On growth, Spero Therapeutics, Inc. posted the faster year-over-year revenue change (24080.8% vs -0.4%). Over the past eight quarters, Spero Therapeutics, Inc.'s revenue compounded faster (847.7% CAGR vs -4.0%).
SPRO vs ZEO — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $12.6M | $18.6M |
| Net Profit | $31.5M | $-2.0M |
| Gross Margin | — | — |
| Operating Margin | — | -11.8% |
| Net Margin | 250.7% | -10.8% |
| Revenue YoY | 24080.8% | -0.4% |
| Net Profit YoY | 250.9% | -360.9% |
| EPS (diluted) | $0.56 | — |
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 | $12.6M | $18.6M | ||
| Q3 25 | $0 | $23.9M | ||
| Q2 25 | $0 | $18.1M | ||
| Q1 25 | $12.0K | $8.8M | ||
| Q4 24 | $52.0K | $18.6M | ||
| Q3 24 | $65.0K | $19.7M | ||
| Q2 24 | $114.0K | $14.8M | ||
| Q1 24 | $140.0K | $20.1M |
| Q4 25 | $31.5M | $-2.0M | ||
| Q3 25 | $-7.4M | $-3.2M | ||
| Q2 25 | $-1.7M | $-2.4M | ||
| Q1 25 | $-13.9M | $-6.4M | ||
| Q4 24 | — | $-435.3K | ||
| Q3 24 | $-17.1M | $-424.3K | ||
| Q2 24 | $-17.9M | $-277.8K | ||
| Q1 24 | $-12.7M | $-1.5M |
| Q4 25 | — | — | ||
| Q3 25 | — | 57.9% | ||
| Q2 25 | — | 59.8% | ||
| Q1 25 | — | 99.3% | ||
| Q4 24 | — | — | ||
| Q3 24 | — | 50.2% | ||
| Q2 24 | — | 52.3% | ||
| Q1 24 | — | — |
| Q4 25 | — | -11.8% | ||
| Q3 25 | — | -8.3% | ||
| Q2 25 | — | -15.8% | ||
| Q1 25 | -122758.3% | -153.8% | ||
| Q4 24 | — | -6.0% | ||
| Q3 24 | -28604.6% | -15.2% | ||
| Q2 24 | -16720.2% | -18.0% | ||
| Q1 24 | -9987.1% | -20.1% |
| Q4 25 | 250.7% | -10.8% | ||
| Q3 25 | — | -13.5% | ||
| Q2 25 | — | -13.3% | ||
| Q1 25 | -115550.0% | -72.4% | ||
| Q4 24 | — | -2.3% | ||
| Q3 24 | -26380.0% | -2.2% | ||
| Q2 24 | -15668.4% | -1.9% | ||
| Q1 24 | -9049.3% | -7.6% |
| Q4 25 | $0.56 | — | ||
| Q3 25 | $-0.13 | — | ||
| Q2 25 | $-0.03 | — | ||
| Q1 25 | $-0.25 | $-0.48 | ||
| Q4 24 | — | $1.11 | ||
| Q3 24 | $-0.32 | $-0.08 | ||
| Q2 24 | $-0.33 | $0.03 | ||
| Q1 24 | $-0.24 | $-1.54 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $40.3M | $6.1M |
| Total DebtLower is stronger | — | $79.1K |
| Stockholders' EquityBook value | $59.0M | $5.3M |
| Total Assets | $68.9M | $56.9M |
| Debt / EquityLower = less leverage | — | 0.01× |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $40.3M | $6.1M | ||
| Q3 25 | $48.6M | $3.9M | ||
| Q2 25 | $31.2M | $68.7K | ||
| Q1 25 | $48.9M | $2.9M | ||
| Q4 24 | $52.9M | $5.6M | ||
| Q3 24 | $76.3M | $4.3M | ||
| Q2 24 | $63.5M | $5.3M | ||
| Q1 24 | $82.3M | — |
| Q4 25 | — | $79.1K | ||
| Q3 25 | — | $84.6K | ||
| Q2 25 | — | $642.8K | ||
| Q1 25 | — | $715.4K | ||
| Q4 24 | — | $787.7K | ||
| Q3 24 | — | $858.6K | ||
| Q2 24 | — | $1.6M | ||
| Q1 24 | — | $748.8K |
| Q4 25 | $59.0M | $5.3M | ||
| Q3 25 | $26.5M | $-1.7M | ||
| Q2 25 | $32.8M | $-59.4M | ||
| Q1 25 | $33.8M | $-23.1M | ||
| Q4 24 | $46.1M | $-88.9M | ||
| Q3 24 | $65.5M | $-39.3M | ||
| Q2 24 | $80.5M | $-53.0M | ||
| Q1 24 | $96.2M | $-173.0M |
| Q4 25 | $68.9M | $56.9M | ||
| Q3 25 | $54.2M | $58.5M | ||
| Q2 25 | $62.1M | $46.2M | ||
| Q1 25 | $77.7M | $47.4M | ||
| Q4 24 | $110.5M | $61.0M | ||
| Q3 24 | $135.2M | $47.1M | ||
| Q2 24 | $149.9M | $49.1M | ||
| Q1 24 | $167.7M | $50.1M |
| Q4 25 | — | 0.01× | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
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 | $-8.4M | $2.4M |
| Free Cash FlowOCF − Capex | — | $2.3M |
| FCF MarginFCF / Revenue | — | 12.2% |
| Capex IntensityCapex / Revenue | — | 0.9% |
| Cash ConversionOCF / Net Profit | -0.26× | — |
| TTM Free Cash FlowTrailing 4 quarters | — | $-9.9M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-8.4M | $2.4M | ||
| Q3 25 | $17.4M | $-6.6M | ||
| Q2 25 | $-17.7M | $-2.3M | ||
| Q1 25 | $-4.0M | $-2.3M | ||
| Q4 24 | $-23.4M | $3.5M | ||
| Q3 24 | $12.8M | $162.2K | ||
| Q2 24 | $-18.7M | $-2.2M | ||
| Q1 24 | $5.9M | $-10.2M |
| Q4 25 | — | $2.3M | ||
| Q3 25 | — | $-6.8M | ||
| Q2 25 | — | $-2.7M | ||
| Q1 25 | — | $-2.6M | ||
| Q4 24 | — | $3.4M | ||
| Q3 24 | — | $116.5K | ||
| Q2 24 | — | $-2.3M | ||
| Q1 24 | — | $-10.4M |
| Q4 25 | — | 12.2% | ||
| Q3 25 | — | -28.6% | ||
| Q2 25 | — | -15.0% | ||
| Q1 25 | — | -30.0% | ||
| Q4 24 | — | 18.2% | ||
| Q3 24 | — | 0.6% | ||
| Q2 24 | — | -15.6% | ||
| Q1 24 | — | -51.5% |
| Q4 25 | — | 0.9% | ||
| Q3 25 | — | 1.0% | ||
| Q2 25 | — | 2.4% | ||
| Q1 25 | — | 4.2% | ||
| Q4 24 | — | 0.5% | ||
| Q3 24 | — | 0.2% | ||
| Q2 24 | — | 0.7% | ||
| Q1 24 | — | 1.1% |
| Q4 25 | -0.26× | — | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
SPRO
Segment breakdown not available.
ZEO
| Nonrelated Party | $18.1M | 98% |
| Related Party | $432.1K | 2% |
