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Side-by-side financial comparison of ATN International, Inc. (ATNI) and CASTLE BIOSCIENCES INC (CSTL). Click either name above to swap in a different company.
ATN International, Inc. is the larger business by last-quarter revenue ($169.1M vs $83.7M, roughly 2.0× CASTLE BIOSCIENCES INC). ATN International, Inc. runs the higher net margin — -4.0% vs -17.4%, a 13.3% gap on every dollar of revenue. On growth, ATN International, Inc. posted the faster year-over-year revenue change (1.2% vs -4.9%). Over the past eight quarters, ATN International, Inc.'s revenue compounded faster (-1.1% CAGR vs -1.9%).
ATN International, Inc. (ATN) formerly known as Atlantic Tele-Network, Inc., is a publicly traded telecommunications company that is headquartered in Beverly, Massachusetts. It operates digital wireless, wireline, and both terrestrial and submarine fiber optic networks, serving markets that are geographically separated and technically challenging, such as the plains, deserts, and mountainous areas of the United States.
Castle Biosciences Inc. is a commercial-stage diagnostic firm that develops and markets proprietary, clinically actionable tests for dermatological conditions such as melanoma and other skin cancers, plus rare diseases. It operates mainly in the U.S. healthcare market, focusing on segments with high unmet need for more accurate diagnostics to guide treatment choices.
ATNI vs CSTL — Head-to-Head
Income Statement — Q4 FY2025 vs Q1 FY2026
| Metric | | |
|---|---|---|
| Revenue | $169.1M | $83.7M |
| Net Profit | $-6.8M | $-14.5M |
| Gross Margin | — | — |
| Operating Margin | 9.3% | — |
| Net Margin | -4.0% | -17.4% |
| Revenue YoY | 1.2% | -4.9% |
| Net Profit YoY | -261.7% | 43.8% |
| EPS (diluted) | $-0.31 | $-0.49 |
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 | — | $83.7M | ||
| Q4 25 | $169.1M | $87.0M | ||
| Q3 25 | $166.9M | $83.0M | ||
| Q2 25 | $166.5M | $86.2M | ||
| Q1 25 | $164.6M | $88.0M | ||
| Q4 24 | $167.1M | $86.3M | ||
| Q3 24 | $164.6M | $85.8M | ||
| Q2 24 | $169.4M | $87.0M |
| Q1 26 | — | $-14.5M | ||
| Q4 25 | $-6.8M | — | ||
| Q3 25 | $3.9M | $-501.0K | ||
| Q2 25 | $-9.3M | $4.5M | ||
| Q1 25 | $-11.4M | $-25.8M | ||
| Q4 24 | $4.2M | — | ||
| Q3 24 | $-39.5M | $2.3M | ||
| Q2 24 | $11.3M | $8.9M |
| Q1 26 | — | — | ||
| Q4 25 | — | 79.0% | ||
| Q3 25 | — | 77.5% | ||
| Q2 25 | — | 79.5% | ||
| Q1 25 | — | 81.4% | ||
| Q4 24 | — | 81.3% | ||
| Q3 24 | — | 81.8% | ||
| Q2 24 | — | 83.3% |
| Q1 26 | — | — | ||
| Q4 25 | 9.3% | -4.4% | ||
| Q3 25 | 5.9% | -8.2% | ||
| Q2 25 | 0.1% | -4.9% | ||
| Q1 25 | 1.6% | -31.7% | ||
| Q4 24 | 5.2% | 4.7% | ||
| Q3 24 | -23.3% | 5.9% | ||
| Q2 24 | 14.4% | 5.8% |
| Q1 26 | — | -17.4% | ||
| Q4 25 | -4.0% | — | ||
| Q3 25 | 2.4% | -0.6% | ||
| Q2 25 | -5.6% | 5.2% | ||
| Q1 25 | -6.9% | -29.4% | ||
| Q4 24 | 2.5% | — | ||
| Q3 24 | -24.0% | 2.6% | ||
| Q2 24 | 6.7% | 10.3% |
| Q1 26 | — | $-0.49 | ||
| Q4 25 | $-0.31 | $-0.06 | ||
| Q3 25 | $0.18 | $-0.02 | ||
| Q2 25 | $-0.56 | $0.15 | ||
| Q1 25 | $-0.69 | $-0.90 | ||
| Q4 24 | $0.16 | $0.32 | ||
| Q3 24 | $-2.26 | $0.08 | ||
| Q2 24 | $0.50 | $0.31 |
Balance Sheet & Financial Strength
Snapshot of each company's liquidity, leverage and book value from the latest quarter.
| Metric | | |
|---|---|---|
| Cash + ST InvestmentsLiquidity on hand | $102.9M | $63.8M |
| Total DebtLower is stronger | $565.2M | $10.1M |
| Stockholders' EquityBook value | $444.3M | $461.4M |
| Total Assets | $1.7B | $547.8M |
| Debt / EquityLower = less leverage | 1.27× | 0.02× |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | — | $63.8M | ||
| Q4 25 | $102.9M | $299.5M | ||
| Q3 25 | $106.6M | $287.5M | ||
| Q2 25 | $99.4M | $275.9M | ||
| Q1 25 | $83.8M | $275.2M | ||
| Q4 24 | $73.7M | $293.1M | ||
| Q3 24 | $101.0M | $95.0M | ||
| Q2 24 | $59.2M | $85.6M |
| Q1 26 | — | $10.1M | ||
| Q4 25 | $565.2M | $10.1M | ||
| Q3 25 | $579.6M | $10.0M | ||
| Q2 25 | $583.4M | $10.0M | ||
| Q1 25 | $562.4M | $10.0M | ||
| Q4 24 | $557.4M | $10.0M | ||
| Q3 24 | $568.9M | $10.0M | ||
| Q2 24 | $540.8M | $10.0M |
| Q1 26 | — | $461.4M | ||
| Q4 25 | $444.3M | $470.9M | ||
| Q3 25 | $452.3M | $467.0M | ||
| Q2 25 | $458.7M | $455.4M | ||
| Q1 25 | $473.3M | $440.3M | ||
| Q4 24 | $489.5M | $455.8M | ||
| Q3 24 | $490.8M | $441.1M | ||
| Q2 24 | $526.8M | $423.9M |
| Q1 26 | — | $547.8M | ||
| Q4 25 | $1.7B | $578.6M | ||
| Q3 25 | $1.7B | $562.8M | ||
| Q2 25 | $1.7B | $544.7M | ||
| Q1 25 | $1.7B | $501.7M | ||
| Q4 24 | $1.7B | $531.2M | ||
| Q3 24 | $1.8B | $514.6M | ||
| Q2 24 | $1.8B | $487.3M |
| Q1 26 | — | 0.02× | ||
| Q4 25 | 1.27× | 0.02× | ||
| Q3 25 | 1.28× | 0.02× | ||
| Q2 25 | 1.27× | 0.02× | ||
| Q1 25 | 1.19× | 0.02× | ||
| Q4 24 | 1.14× | 0.02× | ||
| Q3 24 | 1.16× | 0.02× | ||
| Q2 24 | 1.03× | 0.02× |
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 | $36.2M | $-22.1M |
| Free Cash FlowOCF − Capex | $7.1M | — |
| FCF MarginFCF / Revenue | 4.2% | — |
| Capex IntensityCapex / Revenue | 17.2% | — |
| Cash ConversionOCF / Net Profit | — | — |
| TTM Free Cash FlowTrailing 4 quarters | $43.9M | — |
8-quarter trend — quarters aligned by calendar period.
| Q1 26 | — | $-22.1M | ||
| Q4 25 | $36.2M | $26.9M | ||
| Q3 25 | $37.8M | $22.6M | ||
| Q2 25 | $23.9M | $20.8M | ||
| Q1 25 | $35.9M | $-6.0M | ||
| Q4 24 | $30.5M | $24.4M | ||
| Q3 24 | $39.0M | $23.3M | ||
| Q2 24 | $35.2M | $24.0M |
| Q1 26 | — | — | ||
| Q4 25 | $7.1M | $19.7M | ||
| Q3 25 | $18.9M | $7.8M | ||
| Q2 25 | $2.8M | $11.6M | ||
| Q1 25 | $15.1M | $-10.8M | ||
| Q4 24 | $5.8M | $16.8M | ||
| Q3 24 | $15.2M | $17.0M | ||
| Q2 24 | $9.4M | $18.8M |
| Q1 26 | — | — | ||
| Q4 25 | 4.2% | 22.7% | ||
| Q3 25 | 11.3% | 9.4% | ||
| Q2 25 | 1.7% | 13.4% | ||
| Q1 25 | 9.2% | -12.2% | ||
| Q4 24 | 3.5% | 19.5% | ||
| Q3 24 | 9.2% | 19.8% | ||
| Q2 24 | 5.6% | 21.6% |
| Q1 26 | — | — | ||
| Q4 25 | 17.2% | 8.3% | ||
| Q3 25 | 11.3% | 17.9% | ||
| Q2 25 | 12.7% | 10.7% | ||
| Q1 25 | 12.7% | 5.4% | ||
| Q4 24 | 14.8% | 8.8% | ||
| Q3 24 | 14.5% | 7.4% | ||
| Q2 24 | 15.2% | 6.0% |
| Q1 26 | — | — | ||
| Q4 25 | — | — | ||
| Q3 25 | 9.62× | — | ||
| Q2 25 | — | 4.60× | ||
| Q1 25 | — | — | ||
| Q4 24 | 7.24× | — | ||
| Q3 24 | — | 10.29× | ||
| Q2 24 | 3.11× | 2.69× |
Financial Flow Comparison
Revenue → gross profit → operating profit → net profit for each company.
Revenue Breakdown by Segment
ATNI
| Us Telecommunications | $86.9M | 51% |
| Fixed Consumer | $42.8M | 25% |
| Fixed Business | $18.5M | 11% |
| Transferred At Point In Time | $7.2M | 4% |
| Mobility Business | $5.3M | 3% |
| Other Revenue | $4.2M | 2% |
| Other Communication Services | $3.2M | 2% |
| Managed Services | $1.2M | 1% |
| Construction Services | $448.0K | 0% |
CSTL
Segment breakdown not available.
