CLIR ClearSign Technologies Corporation
NASDAQActiveCommon stock
CLIR is the ticker symbol of ClearSign Technologies Corporation, which is listed on NASDAQ. The symbol was previously used by ClearSign Combustion Corporation.
CLIR at a glance
- Symbol
- CLIR
- Company / issuer
- ClearSign Technologies Corporation
- Security type
- Common stock
- Exchange
- NASDAQ
- Status
- Actively traded
- Seen in listing files
- Jan 2015 – present
- Sector
- Industrials
- Industry
- Industrial Machinery/Components
- Country
- United States
- IPO year
- 2012
- Market cap
- $23.6 million (Sep 2026)
CLIR ticker history
All companies and securities we have recorded under the symbol CLIR, from periodic snapshots of US exchange listing files.
| Name | Security | First seen | Last seen |
|---|---|---|---|
| ClearSign Combustion Corporation | — | Jan 2015 | Aug 2018 |
| ClearSign Technologies Corporation | Common Stock | Jan 2021 | present |
ClearSign Technologies Corporation company profile
- Industry (SIC)
- Industrial Instruments For Measurement, Display, and Control
- Headquarters
- Tulsa, OK
- Incorporated in
- DE
- Fiscal year end
- December 31
- SEC filer category
- Non-accelerated filer<br>Smaller reporting company
- Latest annual report
- 10-K filed 2026-03-31
- Latest interim report
- 10-Q filed 2026-08-14
- SEC CIK
- 1434524
Former company names
- Clearsign Combustion Corp (until 2019)
Source: SEC EDGAR filer data.
CLIR price chart
Interactive chart provided by TradingView (loads third-party scripts).
Frequently asked questions
What company has the ticker symbol CLIR?
CLIR is the ticker symbol of ClearSign Technologies Corporation on NASDAQ.
Is CLIR still trading?
Yes. CLIR appears in the current NASDAQ listings as of Sep 2026.
Which companies have used the ticker CLIR?
Our listing records show CLIR used by: ClearSign Combustion Corporation; ClearSign Technologies Corporation.
Which exchange is CLIR listed on?
CLIR is listed on NASDAQ.
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