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Side-by-side financial comparison of Castellum, Inc. (CTM) and QT IMAGING HOLDINGS, INC. (QTI). Click either name above to swap in a different company.
Castellum, Inc. is the larger business by last-quarter revenue ($12.6M vs $8.3M, roughly 1.5× QT IMAGING HOLDINGS, INC.). Castellum, Inc. runs the higher net margin — -10.5% vs -16.8%, a 6.3% gap on every dollar of revenue. On growth, QT IMAGING HOLDINGS, INC. posted the faster year-over-year revenue change (877.2% vs 21.9%).
Castellum, Inc. is a U.S.-based cybersecurity and information technology services provider. It caters to government defense agencies, public sector entities, and commercial enterprise clients, offering threat detection, data protection, cloud security, and managed IT solutions to help organizations mitigate cyber risks and safeguard critical digital infrastructure.
QT Imaging Holdings, Inc. is a medical technology company that designs, manufactures and commercializes non-invasive medical imaging systems primarily for breast health diagnostics. It serves healthcare providers, clinics and medical institutions across key markets including North America, Europe and Asia-Pacific, focusing on improving the accuracy and accessibility of diagnostic imaging for patients.
CTM vs QTI — Head-to-Head
Income Statement — Q4 FY2025 vs Q4 FY2025
| Metric | | |
|---|---|---|
| Revenue | $12.6M | $8.3M |
| Net Profit | $-1.3M | $-1.4M |
| Gross Margin | 33.9% | 38.0% |
| Operating Margin | -11.1% | -8.5% |
| Net Margin | -10.5% | -16.8% |
| Revenue YoY | 21.9% | 877.2% |
| Net Profit YoY | 51.8% | 60.2% |
| EPS (diluted) | $-0.02 | $-1.00 |
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 | $8.3M | ||
| Q3 25 | $14.6M | $4.2M | ||
| Q2 25 | $14.0M | $3.7M | ||
| Q1 25 | $11.7M | $2.8M | ||
| Q4 24 | $10.3M | — | ||
| Q3 24 | $11.6M | — | ||
| Q2 24 | $11.5M | $1.7M | ||
| Q1 24 | $11.3M | $1.4M |
| Q4 25 | $-1.3M | $-1.4M | ||
| Q3 25 | $415.4K | $-4.6M | ||
| Q2 25 | $-322.1K | $-4.0M | ||
| Q1 25 | $-1.2M | $-11.1M | ||
| Q4 24 | $-2.7M | — | ||
| Q3 24 | $-1.3M | — | ||
| Q2 24 | $-1.8M | $-1.2M | ||
| Q1 24 | $-4.1M | $-628.6K |
| Q4 25 | 33.9% | 38.0% | ||
| Q3 25 | 37.6% | 43.0% | ||
| Q2 25 | 36.1% | 49.9% | ||
| Q1 25 | 39.0% | 64.7% | ||
| Q4 24 | 40.0% | — | ||
| Q3 24 | 42.7% | — | ||
| Q2 24 | 40.6% | 51.0% | ||
| Q1 24 | 39.8% | 55.8% |
| Q4 25 | -11.1% | -8.5% | ||
| Q3 25 | 3.0% | -39.4% | ||
| Q2 25 | -2.7% | -28.5% | ||
| Q1 25 | -12.7% | -37.2% | ||
| Q4 24 | -15.7% | — | ||
| Q3 24 | -11.9% | — | ||
| Q2 24 | -13.6% | -129.5% | ||
| Q1 24 | -23.6% | -409.5% |
| Q4 25 | -10.5% | -16.8% | ||
| Q3 25 | 2.8% | -108.7% | ||
| Q2 25 | -2.3% | -109.3% | ||
| Q1 25 | -10.0% | -397.9% | ||
| Q4 24 | -26.6% | — | ||
| Q3 24 | -11.0% | — | ||
| Q2 24 | -16.0% | -72.9% | ||
| Q1 24 | -36.3% | -46.1% |
| Q4 25 | $-0.02 | $-1.00 | ||
| Q3 25 | $0.00 | $-0.47 | ||
| Q2 25 | $0.00 | $-0.14 | ||
| Q1 25 | $-0.01 | $-0.40 | ||
| Q4 24 | $-0.05 | — | ||
| Q3 24 | $-0.02 | — | ||
| Q2 24 | $-0.03 | $-0.30 | ||
| Q1 24 | $-0.08 | $-0.05 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | — | $10.4M |
| Total DebtLower is stronger | — | $10.1M |
| Stockholders' EquityBook value | $35.8M | $6.4M |
| Total Assets | $41.9M | $23.0M |
| Debt / EquityLower = less leverage | — | 1.57× |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | — | $10.4M | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | — | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | — | $10.1M | ||
| Q3 25 | — | $15.1M | ||
| Q2 25 | — | $10.1M | ||
| Q1 25 | — | $10.2M | ||
| Q4 24 | $8.0M | — | ||
| Q3 24 | $8.3M | — | ||
| Q2 24 | $8.7M | $11.7M | ||
| Q1 24 | $9.0M | $11.7M |
| Q4 25 | $35.8M | $6.4M | ||
| Q3 25 | $36.7M | $-9.1M | ||
| Q2 25 | $31.8M | $-324.3K | ||
| Q1 25 | $26.1M | $-20.2M | ||
| Q4 24 | $20.2M | — | ||
| Q3 24 | $12.0M | — | ||
| Q2 24 | $12.1M | $-6.2M | ||
| Q1 24 | $12.8M | $-4.9M |
| Q4 25 | $41.9M | $23.0M | ||
| Q3 25 | $46.3M | $12.1M | ||
| Q2 25 | $43.4M | $11.6M | ||
| Q1 25 | $41.1M | $10.9M | ||
| Q4 24 | $37.8M | — | ||
| Q3 24 | $28.8M | — | ||
| Q2 24 | $29.5M | $10.8M | ||
| Q1 24 | $30.5M | $12.9M |
| Q4 25 | — | 1.57× | ||
| Q3 25 | — | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | 0.40× | — | ||
| Q3 24 | 0.69× | — | ||
| Q2 24 | 0.72× | — | ||
| Q1 24 | 0.70× | — |
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 | $-661.7K | $-3.1M |
| Free Cash FlowOCF − Capex | — | — |
| FCF MarginFCF / Revenue | — | — |
| Capex IntensityCapex / Revenue | — | — |
| Cash ConversionOCF / Net Profit | — | — |
| TTM Free Cash FlowTrailing 4 quarters | — | — |
8-quarter trend — quarters aligned by calendar period.
| Q4 25 | $-661.7K | $-3.1M | ||
| Q3 25 | $1.0M | $-878.8K | ||
| Q2 25 | $214.2K | $-1.4M | ||
| Q1 25 | $-2.5M | $-3.5M | ||
| Q4 24 | $-394.4K | — | ||
| Q3 24 | $742.2K | — | ||
| Q2 24 | $748.6K | $-979.6K | ||
| Q1 24 | $23.7K | $-6.0M |
| Q4 25 | — | — | ||
| Q3 25 | $957.0K | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | $738.9K | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | — | — | ||
| Q3 25 | 6.5% | — | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | — | — | ||
| Q3 24 | 6.4% | — | ||
| Q2 24 | — | — | ||
| Q1 24 | — | — |
| Q4 25 | — | — | ||
| Q3 25 | 0.3% | 0.0% | ||
| Q2 25 | — | — | ||
| Q1 25 | — | — | ||
| Q4 24 | 0.0% | — | ||
| Q3 24 | 0.0% | — | ||
| Q2 24 | 0.0% | — | ||
| Q1 24 | 0.0% | — |
| Q4 25 | — | — | ||
| Q3 25 | 2.41× | — | ||
| 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.
