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Side-by-side financial comparison of Sidus Space Inc. (SIDU) and Spok Holdings, Inc (SPOK). Click either name above to swap in a different company.
Spok Holdings, Inc is the larger business by last-quarter revenue ($33.9M vs $366.0K, roughly 92.5× Sidus Space Inc.). Spok Holdings, Inc runs the higher net margin — 8.7% vs -3115.2%, a 3123.8% gap on every dollar of revenue. On growth, Spok Holdings, Inc posted the faster year-over-year revenue change (-0.1% vs -16.2%). Spok Holdings, Inc produced more free cash flow last quarter ($10.1M vs $-6.5M). Over the past eight quarters, Spok Holdings, Inc's revenue compounded faster (-1.5% CAGR vs -34.2%).
Sidus Space Inc is a U.S.-headquartered space technology and services provider specializing in small satellite design, manufacturing and operation. It offers end-to-end space solutions including data analytics, on-orbit servicing and custom hardware for commercial, government and academic clients worldwide, supporting various space mission objectives.
Spok Holdings, Inc. is a global provider of critical communication solutions primarily serving the healthcare industry. It offers unified clinical communication platforms, secure messaging tools, alerting systems, and on-call scheduling software that help care teams coordinate efficiently, cut response times, and boost patient safety across medical facilities.
SIDU vs SPOK — Head-to-Head
Income Statement — Q4 2025 vs Q4 2025
| Metric | | |
|---|---|---|
| Revenue | $366.0K | $33.9M |
| Net Profit | $-11.4M | $2.9M |
| Gross Margin | -474.9% | 76.7% |
| Operating Margin | -3009.2% | 11.6% |
| Net Margin | -3115.2% | 8.7% |
| Revenue YoY | -16.2% | -0.1% |
| Net Profit YoY | -100.9% | -19.6% |
| EPS (diluted) | $-0.29 | $0.13 |
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 | $366.0K | $33.9M | ||
| Q3 25 | $559.1K | $33.9M | ||
| Q2 25 | $691.1K | $35.7M | ||
| Q1 25 | $160.7K | $36.3M | ||
| Q4 24 | $436.5K | $33.9M | ||
| Q3 24 | $1.8M | $34.9M | ||
| Q2 24 | $834.8K | $34.0M | ||
| Q1 24 | $845.1K | $34.9M |
| Q4 25 | $-11.4M | $2.9M | ||
| Q3 25 | $-6.0M | $3.2M | ||
| Q2 25 | $-5.6M | $4.6M | ||
| Q1 25 | $-6.4M | $5.2M | ||
| Q4 24 | $-5.7M | $3.6M | ||
| Q3 24 | $-3.9M | $3.7M | ||
| Q2 24 | $-4.1M | $3.4M | ||
| Q1 24 | $-3.8M | $4.2M |
| Q4 25 | -474.9% | 76.7% | ||
| Q3 25 | -232.3% | 78.3% | ||
| Q2 25 | -148.6% | 79.5% | ||
| Q1 25 | -1013.3% | 80.1% | ||
| Q4 24 | -171.8% | 78.5% | ||
| Q3 24 | 2.2% | 79.5% | ||
| Q2 24 | -100.8% | 78.9% | ||
| Q1 24 | 9.9% | 79.5% |
| Q4 25 | -3009.2% | 11.6% | ||
| Q3 25 | -1007.2% | 12.9% | ||
| Q2 25 | -765.5% | 15.1% | ||
| Q1 25 | -3778.9% | 16.6% | ||
| Q4 24 | -1165.4% | 13.7% | ||
| Q3 24 | -180.5% | 14.2% | ||
| Q2 24 | -466.9% | 13.2% | ||
| Q1 24 | -421.4% | 14.0% |
| Q4 25 | -3115.2% | 8.7% | ||
| Q3 25 | -1079.2% | 9.5% | ||
| Q2 25 | -814.0% | 12.8% | ||
| Q1 25 | -3991.6% | 14.3% | ||
| Q4 24 | -1300.0% | 10.8% | ||
| Q3 24 | -222.1% | 10.5% | ||
| Q2 24 | -495.5% | 10.1% | ||
| Q1 24 | -450.9% | 12.1% |
| Q4 25 | $-0.29 | $0.13 | ||
| Q3 25 | $-0.24 | $0.15 | ||
| Q2 25 | $-0.31 | $0.22 | ||
| Q1 25 | $-0.35 | $0.25 | ||
| Q4 24 | $-0.26 | $0.17 | ||
| Q3 24 | $-0.93 | $0.18 | ||
| Q2 24 | $-0.99 | $0.17 | ||
| Q1 24 | $-1.42 | $0.21 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | — | $25.3M |
| Total DebtLower is stronger | — | — |
| Stockholders' EquityBook value | $50.6M | $146.4M |
| Total Assets | $66.1M | $206.1M |
| Debt / EquityLower = less leverage | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | — | $25.3M | ||
| Q3 25 | — | $21.4M | ||
| Q2 25 | — | $20.2M | ||
| Q1 25 | — | $19.9M | ||
| Q4 24 | — | $29.1M | ||
| Q3 24 | — | $27.8M | ||
| Q2 24 | — | $23.9M | ||
| Q1 24 | — | $23.3M |
| Q4 25 | $50.6M | $146.4M | ||
| Q3 25 | $24.0M | $148.7M | ||
| Q2 25 | $14.3M | $150.9M | ||
| Q1 25 | $19.8M | $151.7M | ||
| Q4 24 | $23.5M | $154.7M | ||
| Q3 24 | $9.3M | $156.3M | ||
| Q2 24 | $13.1M | $158.2M | ||
| Q1 24 | $17.2M | $160.2M |
| Q4 25 | $66.1M | $206.1M | ||
| Q3 25 | $39.9M | $209.7M | ||
| Q2 25 | $29.7M | $208.7M | ||
| Q1 25 | $34.0M | $204.5M | ||
| Q4 24 | $37.7M | $217.1M | ||
| Q3 24 | $23.1M | $216.8M | ||
| Q2 24 | $21.8M | $216.4M | ||
| Q1 24 | $25.4M | $215.0M |
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 | $-4.1M | $11.5M |
| Free Cash FlowOCF − Capex | $-6.5M | $10.1M |
| FCF MarginFCF / Revenue | -1768.6% | 29.9% |
| Capex IntensityCapex / Revenue | 651.5% | 4.1% |
| Cash ConversionOCF / Net Profit | — | 3.93× |
| TTM Free Cash FlowTrailing 4 quarters | $-26.3M | $25.2M |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-4.1M | $11.5M | ||
| Q3 25 | $-6.2M | $8.1M | ||
| Q2 25 | $-4.6M | $7.0M | ||
| Q1 25 | $-3.2M | $2.3M | ||
| Q4 24 | $-5.5M | $8.4M | ||
| Q3 24 | $-2.7M | $11.1M | ||
| Q2 24 | $-2.2M | $7.4M | ||
| Q1 24 | $-5.4M | $2.0M |
| Q4 25 | $-6.5M | $10.1M | ||
| Q3 25 | $-7.7M | $7.6M | ||
| Q2 25 | $-6.0M | $6.0M | ||
| Q1 25 | $-6.2M | $1.5M | ||
| Q4 24 | $-7.9M | $7.5M | ||
| Q3 24 | $-3.8M | $10.3M | ||
| Q2 24 | $-4.0M | $6.8M | ||
| Q1 24 | $-7.6M | $1.1M |
| Q4 25 | -1768.6% | 29.9% | ||
| Q3 25 | -1369.2% | 22.4% | ||
| Q2 25 | -870.2% | 16.8% | ||
| Q1 25 | -3849.0% | 4.2% | ||
| Q4 24 | -1811.7% | 22.3% | ||
| Q3 24 | -213.6% | 29.4% | ||
| Q2 24 | -477.9% | 20.0% | ||
| Q1 24 | -905.0% | 3.2% |
| Q4 25 | 651.5% | 4.1% | ||
| Q3 25 | 256.8% | 1.6% | ||
| Q2 25 | 199.1% | 2.9% | ||
| Q1 25 | 1853.3% | 2.1% | ||
| Q4 24 | 543.4% | 2.5% | ||
| Q3 24 | 58.9% | 2.4% | ||
| Q2 24 | 220.1% | 1.9% | ||
| Q1 24 | 263.9% | 2.5% |
| Q4 25 | — | 3.93× | ||
| Q3 25 | — | 2.54× | ||
| Q2 25 | — | 1.55× | ||
| Q1 25 | — | 0.43× | ||
| Q4 24 | — | 2.31× | ||
| Q3 24 | — | 3.03× | ||
| Q2 24 | — | 2.17× | ||
| Q1 24 | — | 0.47× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
SIDU
Segment breakdown not available.
SPOK
| Paging | $16.8M | 50% |
| Software Operations | $16.0M | 47% |
| License | $1.2M | 4% |
