ClearSign Technologies annual free cash flow
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2025
ClearSign Technologies Free Cash Flow (FCF) History (CLIR)
ClearSign Technologies reported −$4.7M in free cash flow for fiscal 2025, a decrease of $328,000 from the previous fiscal year, with a free cash flow margin of −90.56%.
View full ClearSign Technologies company overviewClearSign Technologies free cash flow by year
| Fiscal year | Period ended | Free cash flow | Change | Growth | FCF margin |
|---|---|---|---|---|---|
| 2025 | 2025-12-31 | −$4.7M | −$328,000 | — | −90.56% |
| 2024 | 2024-12-31 | −$4.4M | $590,000 | — | −122.69% |
| 2022 | 2022-12-31 | −$5.0M | $1.8M | — | −1337.43% |
| 2021 | 2021-12-31 | −$6.8M | −$799,000 | — | −1116.97% |
| 2020 | 2020-12-31 | −$6.0M | $941,000 | — | — |
| 2019 | 2019-12-31 | −$6.9M | $1.6M | — | — |
| 2018 | 2018-12-31 | −$8.5M | −$126,000 | — | −1599.62% |
| 2017 | 2017-12-31 | −$8.4M | $457,000 | — | −1546.67% |
| 2016 | 2016-12-31 | −$8.8M | −$2.5M | — | −1418.52% |
| 2015 | 2015-12-31 | −$6.3M | −$763,000 | — | −10344.26% |
| 2014 | 2014-12-31 | −$5.5M | −$1.0M | — | — |
| 2013 | 2013-12-31 | −$4.5M | −$1.0M | — | — |
| 2012 | 2012-12-31 | −$3.5M | −$1.7M | — | — |
| 2011 | 2011-12-31 | −$1.8M | — | — | — |
ClearSign Technologies quarterly free cash flow
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Q3.24
Q1.25
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Q4.25
| Fiscal quarter | Period ended | Free cash flow | Change | YoY growth | FCF margin |
|---|---|---|---|---|---|
| Q4 2025 | 2025-12-31 | −$1.3M | $150,000 | — | −34.95% |
| Q3 2025 | 2025-09-30 | −$1.8M | −$1.1M | — | −177.94% |
| Q2 2025 | 2025-06-30 | −$511,000 | $406,000 | — | −384.21% |
| Q1 2025 | 2025-03-31 | −$1.1M | $729,000 | — | −278.05% |
| Q3 2024 | 2024-09-30 | −$1.4M | $75,000 | — | −77.08% |
| Q4 2022 | 2022-12-31 | −$733,000 | $439,000 | — | −1466.00% |
| Q3 2022 | 2022-09-30 | −$917,000 | $992,000 | — | −283.02% |
| Q2 2022 | 2022-06-30 | −$1.8M | $346,000 | — | — |
| Q1 2022 | 2022-03-31 | −$1.5M | $59,000 | — | — |
| Q4 2021 | 2021-12-31 | −$1.2M | $662,000 | — | −2170.37% |
| Q3 2021 | 2021-09-30 | −$1.9M | −$799,000 | — | −1004.74% |
| Q2 2021 | 2021-06-30 | −$2.2M | −$543,000 | — | — |
| Q1 2021 | 2021-03-31 | −$1.6M | −$177,000 | — | −431.68% |
| Q4 2020 | 2020-12-31 | −$1.8M | −$382,000 | — | — |
| Q3 2020 | 2020-09-30 | −$1.1M | $384,000 | — | — |
| Q2 2020 | 2020-06-30 | −$1.6M | $304,000 | — | — |
| Q1 2020 | 2020-03-31 | −$1.4M | $643,000 | — | — |
| Q4 2019 | 2019-12-31 | −$1.5M | $659,000 | — | — |
| Q3 2019 | 2019-09-30 | −$1.5M | $273,000 | — | — |
| Q2 2019 | 2019-06-30 | −$2.0M | $787,000 | — | — |
| Q1 2019 | 2019-03-31 | −$2.0M | −$171,000 | — | — |
| Q4 2018 | 2018-12-31 | −$2.1M | $76,000 | — | — |
| Q3 2018 | 2018-09-30 | −$1.8M | $111,000 | — | — |
| Q2 2018 | 2018-06-30 | −$2.7M | −$746,000 | — | — |
| Q1 2018 | 2018-03-31 | −$1.9M | $433,000 | — | −351.32% |
| Q4 2017 | 2017-12-31 | −$2.2M | $107,000 | — | −1215.00% |
| Q3 2017 | 2017-09-30 | −$1.9M | −$246,000 | — | — |
| Q2 2017 | 2017-06-30 | −$2.0M | $235,000 | — | — |
| Q1 2017 | 2017-03-31 | −$2.3M | $439,000 | — | −637.50% |
| Q4 2016 | 2016-12-31 | −$2.3M | −$821,000 | — | −635.46% |
| Q3 2016 | 2016-09-30 | −$1.6M | $13,000 | — | −627.69% |
| Q2 2016 | 2016-06-30 | −$2.2M | −$887,000 | — | — |
| Q1 2016 | 2016-03-31 | −$2.7M | −$882,000 | — | — |
| Q4 2015 | 2015-12-31 | −$1.5M | −$296,000 | — | — |
| Q3 2015 | 2015-09-30 | −$1.6M | −$449,000 | — | — |
| Q2 2015 | 2015-06-30 | −$1.3M | $181,000 | — | — |
| Q1 2015 | 2015-03-31 | −$1.9M | −$199,000 | — | — |
| Q4 2014 | 2014-12-31 | −$1.2M | −$119,000 | — | — |
| Q3 2014 | 2014-09-30 | −$1.2M | −$238,000 | — | — |
| Q2 2014 | 2014-06-30 | −$1.5M | −$194,000 | — | — |
| Q1 2014 | 2014-03-31 | −$1.7M | −$443,000 | — | — |
| Q4 2013 | 2013-12-31 | −$1.1M | $267,000 | — | — |
| Q3 2013 | 2013-09-30 | −$958,000 | −$13,000 | — | — |
| Q2 2013 | 2013-06-30 | −$1.3M | −$719,000 | — | — |
| Q1 2013 | 2013-03-31 | −$1.2M | −$563,000 | — | — |
| Q4 2012 | 2012-12-31 | −$1.3M | −$594,837 | — | — |
| Q3 2012 | 2012-09-30 | −$945,000 | −$296,613 | — | — |
| Q2 2012 | 2012-06-30 | −$608,000 | −$263,957 | — | — |
| Q1 2012 | 2012-03-31 | −$647,000 | −$550,593 | — | — |
| Q4 2011 | 2011-12-31 | −$730,163 | — | — | — |
| Q3 2011 | 2011-09-30 | −$648,387 | — | — | — |
| Q2 2011 | 2011-06-30 | −$344,043 | — | — | — |
| Q1 2011 | 2011-03-31 | −$96,407 | — | — | — |
ClearSign Technologies free cash flow growth trends
Over the last five reported fiscal years, free cash flow grew from −$6.9M to −$4.7M, a net increase of $2.2M. ClearSign Technologies's latest reported quarter, Q4 2025, generated −$1.3M in free cash flow, an increase of $150,000 year over year.
About the metric
What free cash flow means
Free cash flow is the cash a company generates from operations after capital expenditures. Positive FCF can fund dividends, buybacks, debt repayment, or reinvestment; negative FCF means capital spending exceeded operating cash flow for that period.
Calculation and source
How free cash flow is calculated
TickerStat calculates free cash flow as SEC-reported operating cash flow minus capital expenditures. FCF margin equals free cash flow divided by revenue. Fiscal periods can differ from calendar years, so the tables include exact period-end dates.
Review ClearSign Technologies filings at SEC.gov ↗