About ClearSign
ClearSign is a company based in Seattle (United States) founded in 2008.. ClearSign has raised $1.16 million across 9 funding rounds from investors including DOE and OSTI.GOV. The company has 18 employees as of December 31, 2024. ClearSign offers products and services including ClearSign Core™ Process Burners, ClearSign Core™ M1, Boiler Burners, Flares, and ClearSign Eye™ Flame Sensor. ClearSign operates in a competitive market with competitors including Claros Technologies, JCCL, Nala Earth, Sunborne Systems and John Zink Hamworthy, among others.
- Headquarter Seattle, United States
- Employees 18 as on 31 Dec, 2024
- Stage Public
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Sectors
EnvironmentEnergy & Utilities
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Email
***********
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Phone
*********
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Website
*********
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Social
*********
- Legal Name Clearsign Technologies Corporation
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Annual Revenue
$3.6 M49.65as on Dec 31, 2024
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Net Profit
$-5.3 M-2.02as on Dec 31, 2024
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EBITDA
$-6.22 M-13.51as on Dec 31, 2024
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Total Equity Funding
$1.16 M (USD)
in 9 rounds
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Latest Funding Round
$400 K (USD), Grant
Jan 30, 2025
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Investors
DOE
& 1 more
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Employee Count
18
as on Dec 31, 2024
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IPO & Listings of ClearSign
ClearSign is a publicly listed company on the NASDAQ with ticker symbol CLIR in USA, operating in the Producer manufacturing sector. As a publicly traded entity, the company provides investors with opportunities to participate in its growth story through equity ownership. The listing enables access to capital markets, enhances corporate visibility, and provides liquidity for shareholders while maintaining transparency through regulatory compliance and regular financial disclosures.
Products & Services of ClearSign
ClearSign offers a comprehensive portfolio of products and services, including ClearSign Core™ Process Burners, ClearSign Core™ M1, Boiler Burners, Flares, and ClearSign Eye™ Flame Sensor. The company's diverse product and service offerings are designed to meet the evolving needs of its customers, address market demands, and provide comprehensive solutions that drive value creation and customer satisfaction across various segments and use cases.
Burners that reduce NOx emissions in industrial heaters efficiently.
Technology for enhanced efficiency and emissions control in combustion.
Burners delivering low NOx for firetube and watertube boilers.
Modular burners for flaring with high destruction efficiency.
Electrical sensor for flame detection in industrial applications.
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Funding Insights of ClearSign
ClearSign has successfully raised a total of $1.16M across 9 strategic funding rounds. The most recent funding activity was a Grant round of $400 thousand completed in January 2025. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding Total Funding
- Total Rounds 9
- Last Round Grant — $400,000
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First Round
First Round
(02 Feb 2011)
- Investors Count 2
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jan, 2025 | Amount | Grant - ClearSign | Valuation |
investors |
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| Jun, 2024 | Amount | Post-IPO - ClearSign | Valuation |
investors |
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| Apr, 2024 | Amount | Post-IPO - ClearSign | Valuation |
investors |
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| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jul, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Jan, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
Investors in ClearSign
ClearSign has secured backing from 2 investors, including institutional investors. Prominent investors backing the company include DOE and OSTI.GOV. This diverse investor base provides strategic capital, industry expertise, and valuable network connections that support the company's growth initiatives, market expansion, and long-term value creation.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
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Energy sources and policies are managed by the DOE.
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Founded Year | Domain | Location | |
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Scientific and technical information is managed and disseminated by OSTI.GOV.
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Founded Year | Domain | Location |
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
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Single family office of Amitabh Bachchan, founder of Amitabh Bachchan Corporation or AB CORP
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Founded Year | Domain | Location | |
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Startup ecosystems are ignited through strategic investments by Signite Partners.
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Founded Year | Domain | Location | |
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Venture capital is directed toward companies in multiple sectors.
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Founded Year | Domain | Location | |
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Venture capital is invested in cybersecurity, fintech, and AI startups.
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Founded Year | Domain | Location |
Investments & Acquisitions by ClearSign
| Company Name | Description | Domain | Location | Founded Year | Amount |
|---|---|---|---|---|---|
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Bionic investment advisor platform
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2016 | ||||
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Fine Asian gourmet food is offered by an internet-first restaurant.
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2016 | ||||
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Physical e-commerce kiosks are deployed for rural purchases in Indonesia.
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2014 | ||||
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Fine Asian gourmet food is offered by an internet-first restaurant.
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2016 |
Financial Statements - ClearSign
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Jul, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Jan, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
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| Feb, 2021 | Amount | Post-IPO - Grab | Valuation |
investors |
Clearsign Comparisons
Competitors of ClearSign
ClearSign operates in a dynamic and competitive business environment, facing competition from various established players and emerging companies in the market. The competitive landscape includes prominent companies such as Claros Technologies, JCCL, Nala Earth, Sunborne Systems and John Zink Hamworthy, among others. This competitive environment drives innovation, market differentiation, and strategic positioning as companies strive to capture market share and deliver value to their customers. Understanding the competitive dynamics is crucial for assessing market positioning, identifying growth opportunities, and navigating the challenges inherent in a competitive marketplace.
| Company Name | Domain | Founded year | HQ Location | Description |
|---|---|---|---|---|
| domain | founded_year | HQ Location |
Provider of sustainable solutions for circular economy
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| domain | founded_year | HQ Location |
Provider of carbon dioxide recovery and recycling solutions
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| domain | founded_year | HQ Location |
Company allows businesses to measure, manage, and report their impact on nature
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| domain | founded_year | HQ Location |
Hydrogen-based fuel is provided via an online platform.
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| domain | founded_year | HQ Location |
Emission control and management solutions are provided for industrial operations.
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| Company Name | Domain | Founded year | HQ Location | Description |
|---|---|---|---|---|
| domain | founded_year | HQ Location |
Multiple services are booked via an app-based platform.
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| domain | founded_year | HQ Location |
On-demand services are booked through an app-based platform.
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| domain | founded_year | HQ Location |
App based platform offering on demand delivery and ride-hailing services
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| domain | founded_year | HQ Location |
Operates an on-demand hyperlocal delivery app for food and groceries.
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Latest news on Clearsign
Frequently Asked Questions about ClearSign
When was ClearSign founded?
ClearSign was founded in 2008 and raised its 1st funding round 3 years after it was founded.
Where is ClearSign located?
ClearSign is headquartered in Seattle, United States. It is registered at Seattle, Washington, United States.
Is ClearSign a funded company?
ClearSign is a funded company, having raised a total of $1.16M across 9 funding rounds to date. The company's 1st funding round was a Post-IPO of $5M, raised on Feb 02, 2011.
How many employees does ClearSign have?
As of Dec 31, 2024, the latest employee count at ClearSign is 18.
What is the annual revenue of ClearSign?
Annual revenue of ClearSign is $3.6M as on Dec 31, 2024.
What does ClearSign do?
ClearSign was founded in 2008 and is based in Seattle, United States. Combustion efficiency enhancement technologies are developed and provided for sectors including chemical, petrochemical, refinery, power, and commercial boiler industries. Duplex and Electrodynamic Combustion Control platforms are utilized to improve system performance. Retrofit strategies are offered to achieve emissions control and enhance combustion operations across these markets.
Who are the top competitors of ClearSign?
ClearSign's top competitors include Claros Technologies, Nala Earth and JCCL.
What products or services does ClearSign offer?
ClearSign offers ClearSign Core™ Process Burners, ClearSign Core™ M1, Boiler Burners, Flares, and ClearSign Eye™ Flame Sensor.
Is ClearSign publicly traded?
Yes, ClearSign is publicly traded on NASDAQ under the ticker symbol CLIR.
What is ClearSign's ticker symbol?
The ticker symbol of ClearSign is CLIR on NASDAQ.
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