CLIR
ClearSign Combustion Corporation
NASDAQ: CLIR · INDUSTRIALS · POLLUTION & TREATMENT CONTROLS
$5.00
-6.89% today
Updated 2026-04-30
Market cap
$27.04M
P/E ratio
—
P/S ratio
5.17x
EPS (TTM)
$-0.10
Dividend yield
—
52W range
$3 – $11
Volume
0.1M
ClearSign Combustion Corporation (CLIR) Financial statements
SEC filings — annual and quarterly data.
Cash flow — annual
| Item | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operating cash flow | $-293013.00 | $-129966.00 | $-1.69M | $-3.19M | $-4.30M | $-5.47M | $-6.26M | $-8.67M | $-8.26M | $-8.38M | $-6.90M | $-5.96M | $-6.71M | $-4.99M | $-3.23M | $-4.37M | $-4.74M |
| Capital expenditures | $19932.00 | $0.00 | $217723.00 | $868000.00 | $1.08M | $1.25M | $1.16M | $1.05M | $421000.00 | $502000.00 | $418000.00 | $194000.00 | $213000.00 | $164000.00 | $200000.00 | $218000.00 | $101000.00 |
| Depreciation | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Stock-based comp | — | — | $187096.00 | $310000.00 | $146000.00 | $365000.00 | $797000.00 | $645000.00 | $369000.00 | $224000.00 | $685000.00 | $800000.00 | $680000.00 | $373000.00 | $624000.00 | $528000.00 | $893000.00 |
| Free cash flow | $-312945.00 | $-129966.00 | $-1.91M | $-4.06M | $-5.38M | $-6.72M | $-7.42M | $-9.73M | $-8.68M | $-8.89M | $-7.32M | $-6.16M | $-6.92M | $-5.16M | $-3.43M | $-4.59M | $-4.84M |
| Investing cash flow | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Financing cash flow | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Dividends paid | — | — | — | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | $0.00 | — | — | — | — | — | — | — | — |
| Share repurchases | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Debt repayment | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Net change in cash | — | — | — | — | $-5.34M | $-843000.00 | $9.14M | $-9.73M | $-12000.00 | $7.70M | $-397000.00 | $272000.00 | — | — | — | — | — |