Quick Answer
ClearSign Technologies Corp reported R&D Expense of $1.42 million for fiscal year 2025.
ClearSign Technologies Corp R&D Expense — Annual History
| Fiscal Year | R&D Expense | YoY Change |
|---|---|---|
| 2025 | $1.42M | -3.3% |
| 2024 | $1.47M | +99.1% |
| 2023 | $739.0K | +46.3% |
| 2022 | $505.0K | -81.2% |
| 2021 | $2.68M | +32.1% |
| 2020 | $2.03M | -33.6% |
| 2019 | $3.06M | -24.6% |
| 2018 | $4.05M | -14.0% |
| 2017 | $4.71M | -2.5% |
| 2016 | $4.83M | +64.8% |
| 2015 | $2.93M | +32.3% |
| 2014 | $2.22M | +19.8% |
| 2013 | $1.85M | +56.3% |
| 2012 | $1.18M | +155.7% |
| 2011 | $463.0K | — |
Quarterly R&D Expense
| Quarter Ending | R&D Expense | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | $310.0K | -5.8% | +25.5% |
| June 30, 2025 | $247.0K | -38.6% | -44.7% |
| March 31, 2025 | $447.0K | +59.1% | +35.9% |
| September 30, 2024 | $329.0K | +253.8% | -18.2% |
| June 30, 2024 | $402.0K | +115.0% | +43.1% |
| March 31, 2024 | $281.0K | +75.6% | +202.2% |
| September 30, 2023 | $93.0K | -4.1% | -50.3% |
| June 30, 2023 | $187.0K | -0.5% | +16.9% |
- ClearSign Technologies Corp showed a decrease of -3.3% in R&D Expense compared to the prior fiscal year.
- Over the 2011–2025 period, ClearSign Technologies Corp’s r&d expense has grown by 207.1% (from $463.0 thousand to $1.42 million).
- The most recent figure is from ClearSign Technologies Corp’s fiscal year 2025 report (Form 10-K), filed with the SEC on March 31, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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