NASDAQ:CLIR
ClearSign Technologies Corp
ClearSign Technologies Corp's revenue grew 45.6% in fiscal 2025 to $5.2M while operating margin rose to −127.5%, its highest in 5 years. Free cash flow was −$4.7M, −90.6% of revenue, and the diluted share count rose 13.4%.Summary generated from ClearSign Technologies Corp's SEC filings. Latest annual report filed Mar 31, 2026.
Key statistics
Fiscal 2025 from SEC filings. MethodologyRevenue (FY25)$5.2M
Revenue growth+45.6%
Revenue, 5-yr CAGRn/a
Gross margin27.2%
Operating margin−127.5%
Net margin−105.0%
ROICn/a
Return on equity−47.2%
Debt / equityn/a
Free cash flow−$4.7M
FCF margin−90.6%
Share count change+13.4%
Financials
| Item | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | 1 | 0 | 2 | 4 | 5 |
| Operating income | −8 | −6 | −6 | −6 | −7 |
| Net income | −8 | −6 | −5 | −5 | −5 |
| Free cash flow | −7 | −5 | n/a | −4 | −5 |
Recent filings
- 4Insider transaction report
Oct 2, 2026 - 4Insider transaction report
Oct 2, 2026 - 8-KRegulation FD disclosure
Sep 14, 2026 - 8-KResults of operations and financial condition
Aug 20, 2026 - 10-QQuarterly report for the period ended Jun 30, 2026
Aug 14, 2026 - 8-KDirector or officer change
Aug 11, 2026 - 8-KEntry into a material agreement
Jul 23, 2026 - 8-KOther events
Jul 6, 2026