FY2025 · ended Dec 31, 2025 · Revenue $5.23M, +45.6% YoY · Filed Mar 31, 2026
Clearsign Technologies Corporation (CLIR) files with the SEC under industry code 3823, Industrial Instruments For Measurement, Display, and Control. In fiscal 2025, which ended Dec 31, 2025, it reported revenue of $5.2 million and a net loss of $5.5 million. Free cash flow was -$4.7 million. As of Jun 30, 2026 it held $9.9 million in cash and investments and $117,000 in total debt.
Company profile
- Industry
- Industrial Instruments For Measurement, Display, and Control (SIC 3823)
- Listed as
- CLIR (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Tulsa, OK
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1434524
- Former names
- CLEARSIGN COMBUSTION CORP (until Oct 31, 2019)
Other Industrial Instruments For Measurement, Display, and Control companies
- Danaher Corp /DE/ DHR
- Ametek INC/ AME
- Keysight Technologies, Inc. KEYS
- Roper Technologies Inc ROP
- Fortive Corp FTV
- MKS Inc MKSI
- Cognex Corp CGNX
- Ralliant Corp RAL
All 18 Industrial Instruments For Measurement, Display, and Control companies
Key figures
Fiscal-year totals from the annual reports. Balance sheet lines are as of each year end.
| Line | FY 2025 Dec 31, 2025 |
FY 2024 Dec 31, 2024 |
FY 2023 Dec 31, 2023 |
FY 2022 Dec 31, 2022 |
FY 2021 Dec 31, 2021 |
|---|---|---|---|---|---|
| Revenue | $5.2M | $3.6M | $2.4M | $374,000 | $607,000 |
| Operating income | -$6.7M | -$6.5M | -$6.0M | -$6.1M | -$8.1M |
| Net income | -$5.5M | -$5.3M | -$5.2M | -$5.8M | -$7.9M |
| Diluted EPS | -$0.99 | -$1.08 | -$0.13 | -$0.16 | — |
| Operating cash flow | -$4.7M | -$4.4M | -$3.2M | -$5.0M | -$6.7M |
| Free cash flow | -$4.7M | -$4.4M | — | -$5.0M | -$6.8M |
| Total assets | $12.2M | $16.3M | $7.6M | $10.9M | $9.4M |
| Total liabilities | $2.7M | $2.5M | $2.4M | $1.4M | $1.1M |
| Stockholders' equity | $9.5M | $13.8M | $5.2M | $9.6M | $8.3M |
| Cash and investments | $9.2M | $14.0M | $5.7M | $9.1M | $7.6M |
| Total debt | $163,000 | $188,000 | $243,000 | $359,000 | $555,000 |
Recent SEC filings
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Regulation FD disclosure
|
Sep 14, 2026 | Sep 14, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Aug 20, 2026 | Aug 19, 2026 |
| 10-Q | Quarterly report | Aug 14, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 11, 2026 | Aug 6, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Jul 23, 2026 | Jul 21, 2026 |
| 8-K |
Current report
Other events
|
Jul 6, 2026 | Jul 6, 2026 |
All 794 Clearsign Technologies Corporation SEC filings
Source: SEC EDGAR filings. This is company-reported data, not investment advice.