LANTRONIX, INC. (LTRX) Spending and interest coverage
- R&D / revenue · 12 months: Value 14.52%; Formula and calculation Research and development expense / revenue. Period ending 2026-06-30..
- Stock-based compensation / revenue · 12 months: Value 5.19%; 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 | 14.52% | Research and development expense / revenue. Period ending 2026-06-30. $17.55M ÷ $120.90M × 100 ≈ 14.52% |
| Stock-based compensation / revenue · 12 months | 5.19% | Share-based compensation / revenue. Period ending 2026-06-30. $6.27M ÷ $120.90M × 100 ≈ 5.19% |
| 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 | 17.55M USD | Research and Development Expense |
| Revenue | 120.90M USD | Revenue from Contract with Customer, Excluding Assessed Tax |
| Stock-based compensation | 6.27M USD | Share-based Payment Arrangement, Noncash Expense |
| Operating income | -4.12M USD | Operating Income (Loss) |
| Interest expense · reported / estimated | (m) | Interest Expense · 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 | $17.55M | $120.90M | $6.27M | $-4.12M | (m) | 14.52% | 5.19% | (m) | (m) |
| 2026-03-31 | $17.56M | $118.58M | $6.46M | $-6.86M | (m) | 14.81% | 5.44% | (m) | (m) |
| 2025-12-31 | $17.88M | $116.91M | $6.37M | $-9.31M | (m) | 15.29% | 5.45% | (m) | (m) |
| 2025-09-30 | $18.24M | $118.29M | $6.30M | $-10.40M | (m) | 15.42% | 5.33% | (m) | (m) |
| 2025-06-30 | $18.60M | $122.92M | $6.13M | $-11.00M | (m) | 15.13% | 4.99% | (m) | (m) |
| 2025-03-31 | $19.67M | $143.16M | $7.18M | $-7.30M | (m) | 13.74% | 5.01% | (m) | (m) |
| 2024-12-31 | $20.39M | $155.84M | $7.53M | $-3.82M | (m) | 13.08% | 4.83% | (m) | (m) |
| 2024-09-30 | $20.13M | $161.72M | $8.20M | $-3.42M | (m) | 12.45% | 5.07% | (m) | (m) |
| 2024-06-30 | $20.28M | $160.33M | $8.34M | $-2.86M | (m) | 12.65% | 5.20% | (m) | (m) |
| 2024-03-31 | $19.96M | $146.18M | $6.62M | $-4.19M | (m) | 13.66% | 4.53% | (m) | (m) |
| 2023-12-31 | $19.85M | $137.96M | $6.47M | $-6.52M | (m) | 14.39% | 4.69% | (m) | (m) |
| 2023-09-30 | $20.20M | $132.43M | $6.16M | $-6.88M | (m) | 15.26% | 4.65% | (m) | (m) |
| 2023-06-30 | $19.63M | $131.19M | $6.21M | $-6.67M | (m) | 14.96% | 4.73% | (m) | (m) |
| 2023-03-31 | $19.53M | $132.21M | $7.03M | $-5.34M | (m) | 14.77% | 5.32% | (m) | (m) |
| 2022-12-31 | $18.95M | $131.57M | $6.92M | $-4.99M | (m) | 14.40% | 5.26% | (m) | (m) |
| 2022-09-30 | $18.17M | $133.75M | $6.55M | $-4.62M | (m) | 13.59% | 4.90% | (m) | (m) |
| 2022-06-30 | $17.69M | $129.66M | $6.25M | $-5.01M | (m) | 13.64% | 4.82% | (m) | (m) |
| 2022-03-31 | $16.41M | $114.35M | $5.64M | $-6.54M | (m) | 14.35% | 4.93% | (m) | (m) |
| 2021-12-31 | $14.44M | $99.13M | $5.07M | $-5.31M | $1.04M | 14.57% | 5.12% | -5.12× | Reported |
| 2021-09-30 | $12.58M | $82.04M | $4.46M | $-4.89M | $550.00K | 15.34% | 5.44% | -8.89× | Reported |
| 2021-06-30 | $11.11M | $71.48M | $3.58M | $-3.34M | $278.00K | 15.55% | 5.01% | -12.00× | Reported |
| 2021-03-31 | $9.55M | $68.24M | $3.53M | $-3.97M | $440.00K | 14.00% | 5.17% | -9.03× | Reported |
| 2020-12-31 | $9.76M | $67.64M | $3.62M | $-8.34M | $357.00K | 14.42% | 5.35% | -23.37× | Reported |
| 2020-09-30 | $9.64M | $64.28M | $3.66M | $-8.31M | (m) | 15.00% | 5.70% | (m) | (m) |
| 2020-06-30 | $9.69M | $59.88M | $3.64M | $-10.54M | $239.00K | 16.18% | 6.08% | -44.09× | Reported |
| 2020-03-31 | $9.88M | $52.63M | $3.26M | $-10.46M | (m) | 18.77% | 6.19% | (m) | (m) |
| 2019-12-31 | $9.54M | $48.47M | $2.46M | $-4.41M | (m) | 19.69% | 5.07% | (m) | (m) |
| 2019-09-30 | $9.48M | $47.35M | $1.97M | $-2.89M | (m) | 20.03% | 4.16% | (m) | (m) |
| 2019-06-30 | $9.08M | $46.89M | $1.87M | $-488.00K | (m) | 19.36% | 3.99% | (m) | (m) |
| 2019-03-31 | $8.97M | $48.77M | $1.55M | $1.80M | (m) | 18.39% | 3.18% | (m) | (m) |
| 2018-12-31 | $8.55M | $48.03M | $1.52M | $1.34M | (m) | 17.79% | 3.16% | (m) | (m) |
| 2018-09-30 | $8.14M | $47.25M | $1.38M | $1.39M | $18.00K | 17.23% | 2.91% | 77.11× | Reported |
| 2018-06-30 | $8.06M | $45.58M | $1.17M | $804.00K | $18.00K | 17.69% | 2.56% | 44.67× | Reported |
| 2018-03-31 | $8.07M | $44.59M | $1.14M | $13.00K | $19.00K | 18.11% | 2.57% | 0.68× | Reported |
| 2017-12-31 | $8.24M | $44.51M | $1.07M | $-508.00K | $19.00K | 18.51% | 2.41% | -26.74× | Reported |
| 2017-09-30 | $8.24M | $44.40M | $983.00K | $-709.00K | $20.00K | 18.55% | 2.21% | -35.45× | Reported |
| 2017-06-30 | $7.96M | $44.73M | $912.00K | $-183.00K | $23.00K | 17.80% | 2.04% | -7.96× | Reported |
| 2017-03-31 | $7.72M | $44.20M | $844.00K | $-386.00K | $27.00K | 17.47% | 1.91% | -14.30× | Reported |
| 2016-12-31 | $7.34M | $42.64M | $806.00K | $-679.00K | $30.00K | 17.22% | 1.89% | -22.63× | Reported |
| 2016-09-30 | $7.18M | $40.96M | $838.00K | $-1.69M | $33.00K | 17.54% | 2.05% | -51.09× | Reported |
| 2016-06-30 | $6.91M | $40.59M | $870.00K | $-1.93M | $32.00K | 17.02% | 2.14% | -60.25× | Reported |
| 2016-03-31 | $6.91M | $40.31M | $916.00K | $-2.72M | $28.00K | 17.14% | 2.27% | -97.25× | Reported |
| 2015-12-31 | $6.78M | $40.79M | $980.00K | $-3.11M | $24.00K | 16.63% | 2.40% | -129.67× | Reported |
| 2015-09-30 | $6.85M | $41.98M | $993.00K | $-2.77M | $18.00K | 16.32% | 2.37% | -154.17× | Reported |
| 2015-06-30 | $6.92M | $42.95M | $1.01M | $-2.67M | $17.00K | 16.12% | 2.36% | -156.82× | Reported |
| 2015-03-31 | $6.81M | $43.82M | (m) | $-1.85M | $18.00K | 15.54% | (m) | -102.83× | Reported |
| 2014-12-31 | $6.95M | $44.97M | (m) | $-1.13M | $20.00K | 15.45% | (m) | -56.65× | Reported |
| 2014-09-30 | $6.81M | $45.20M | $893.00K | $-797.00K | $24.00K | 15.06% | 1.98% | -33.21× | Reported |
| 2014-06-30 | $6.75M | $44.55M | $869.00K | $-816.00K | $28.00K | 15.14% | 1.95% | -29.14× | Reported |
| 2014-03-31 | $6.84M | $44.57M | $870.00K | $-1.71M | $36.00K | 15.34% | 1.95% | -47.47× | Reported |
| 2013-12-31 | $6.80M | $45.14M | $864.00K | $-2.39M | $44.00K | 15.06% | 1.91% | -54.27× | Reported |
| 2013-09-30 | $6.82M | $46.34M | $848.00K | $-2.47M | $53.00K | 14.72% | 1.83% | -46.64× | Reported |
| 2013-06-30 | $6.75M | $46.66M | $848.00K | $-2.64M | $59.00K | 14.46% | 1.82% | -44.71× | Reported |
| 2013-03-31 | $6.79M | $47.14M | $842.00K | $-1.64M | $66.00K | 14.39% | 1.79% | -24.91× | Reported |
| 2012-12-31 | $6.84M | $47.11M | $830.00K | $-837.00K | $78.00K | 14.53% | 1.76% | -10.73× | Reported |
| 2012-09-30 | $6.82M | $45.40M | $816.00K | $-1.82M | $85.00K | 15.03% | 1.80% | -21.39× | Reported |
| 2012-06-30 | $6.91M | $45.38M | $745.00K | $-2.79M | $97.00K | 15.23% | 1.64% | -28.74× | Reported |
| 2012-03-31 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2011-12-31 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2011-09-30 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2011-06-30 | $7.03M | $49.32M | $1.60M | $-5.06M | $123.00K | 14.26% | 3.25% | -41.17× | Reported |
| 2011-03-31 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2010-12-31 | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) | (m) |
| 2010-09-30 | (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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