Ambiq Micro, Inc. (AMBQ) Spending and interest coverage
- R&D / revenue · 12 months: Value 48.91%; Formula and calculation Research and development expense / revenue. Period ending 2026-06-30..
- Stock-based compensation / revenue · 12 months: Value 12.40%; Formula and calculation Share-based compensation / revenue. Period ending 2026-06-30..
- Interest coverage · 12 months: Value (m); Formula and calculation Estimated: average term debt × dated USD coupon proxy + average commercial paper × matching-currency disclosed rate at or before period end. Swaps, foreign-exchange, lease interest and amortization are not quantified..
Spending and interest coverage
Overview →Financial period ending 2026-06-30; current quote (m). Amounts retain their stated periods and units.
| Metric | Value | Formula and calculation |
|---|---|---|
| R&D / revenue · 12 months | 48.91% | Research and development expense / revenue. Period ending 2026-06-30. $47.87M ÷ $97.87M × 100 ≈ 48.91% |
| Stock-based compensation / revenue · 12 months | 12.40% | Share-based compensation / revenue. Period ending 2026-06-30. $12.14M ÷ $97.87M × 100 ≈ 12.40% |
| Interest coverage · 12 months | (m) | Estimated: average term debt × dated USD coupon proxy + average commercial paper × matching-currency disclosed rate at or before period end. Swaps, foreign-exchange, lease interest and amortization are not quantified. Calculation unavailable: missing inputs remain (m). |
Calculation inputs
| Input | Amount with unit | Raw financial data |
|---|---|---|
| Research and development spending | 47.87M USD | Research and Development Expense |
| Revenue | 97.87M USD | Revenue from Contract with Customer, Excluding Assessed Tax |
| Stock-based compensation | 12.14M USD | Share-based Payment Arrangement, Noncash Expense |
| Operating income | -42.42M USD | Operating Income (Loss) |
| Interest expense · reported / estimated | (m) | · Estimated expense assumptions |
Latest interest expense basis: (m). Estimated values carry *; expand each history row’s basis for its dated balances and rate assumptions.
Calculated history
Changes compare with the next older row (previous quarter), unless explicitly labeled otherwise. Rolling 12-month growth compares two successive quarter-end rolling totals; it is not year-over-year growth.
| Period ending | Research and development spending (USD) | Revenue (USD) | Stock-based compensation (USD) | Operating income (USD) | Interest expense · reported / estimated (USD) | R&D / revenue | SBC / revenue | Interest coverage | Interest expense basis |
|---|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | $47.87M | $97.87M | $12.14M | $-42.42M | (m) | 48.91% | 12.40% | (m) | (m) |
| 2026-03-31 | $42.63M | $81.84M | $9.35M | $-42.49M | (m) | 52.09% | 11.42% | (m) | (m) |
| 2025-12-31 | $38.49M | $72.51M | $6.83M | $-39.54M | (m) | 53.07% | 9.43% | (m) | (m) |
| 2025-09-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2025-06-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2025-03-31 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2024-12-31 | $37.17M | $76.07M | $5.17M | $-40.61M | (m) | 48.86% | 6.80% | (m) | (m) |
| 2024-09-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2024-06-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
(m) means missing inputs. Historical market-based ratios use the saved close on or immediately before period ending and that period’s reported shares; current quotes are not substituted. Five-year projections repeat historical CAGR, not analyst forecasts.
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