ClearSign Technologies Corp
Financial highlights
| Metric | FY December 31, 2025 | FY December 31, 2024 | FY December 31, 2023 | FY December 31, 2022 | FY December 31, 2021 |
|---|---|---|---|---|---|
| Revenue | $5.2M | $3.6M | $2.4M | $374,000 | $607,000 |
| Gross profit | $1.4M | $1.1M | $817,000 | $116,000 | -$452,000 |
| Operating income | -$6.7M | -$6.5M | -$6.0M | -$6.1M | -$8.1M |
| Operating expenses | $8.1M | $7.6M | $6.8M | $6.2M | $7.7M |
| Cost of revenue | $3.8M | $2.5M | $1.6M | $258,000 | $1.1M |
| Cash from operations | -$4.7M | -$4.4M | -$3.2M | -$5.0M | -$6.7M |
| Capital expenditure | $4,000 | $39,000 | — | $10,000 | $73,000 |
| Free cash flow | -$4.7M | -$4.4M | — | -$5.0M | -$6.8M |
| Impairments | $3,000 | $20,000 | $81,000 | $19,000 | — |
| Total assets | $12.2M | $16.3M | $7.6M | $10.9M | $9.4M |
| Total liabilities | $2.7M | $2.5M | $2.4M | $1.4M | $1.1M |
Shares outstanding 5.4M · Free float 96.3%
Annual filing data through FY ended December 31, 2025; float as of July 13, 2026.