ClearSign Technologies Corp
clearsign.comWhat Do They Do?
Designs and sells industrial burners and flares, along with flame sensors, for energy, refining, and commercial and industrial operators.
10-K for FY2025, filed Mar 31, 2026We design and develop technologies for the purpose of decarbonization and improving key performance characteristics of industrial and…View ↗
Our combustion technology has been successfully deployed in commercial projects such as down-stream refining and upstream oil production.…View ↗
We are also designing and commercializing a range of sensing products called the ClearSign Eye for two potential markets. The primary…View ↗
The combustion and emissions control systems markets are significant, both with respect to the wide array of industries in which the…View ↗
How Do They Make Money?
Customers buy burners, flares, spare parts, tests and engineering services under contracts that may call for milestone payments; billed amounts are typically payable after invoicing.
10-K for FY2025, filed Mar 31, 2026The Company’s contracts with customers generally have performance obligations and a schedule of non-refundable cancellation obligations.…View ↗
The Company recognized $5,234 thousand of revenues and $3,810 thousand of cost of goods sold during the year ended December 31, 2025. The…View ↗
The Company’s contracts generally include progress payments from the customer upon completion of defined milestones. As these payments are…View ↗
$5.2M
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10-K for FY2025, filed Mar 31, 2026
$5.2M ↗
Who Are Their Customers?
Industrial operators use the equipment; ClearSign targets OEMs and engineering firms as sales channels, works with service partners on boiler and flare products, and maintains relationships with end users.
10-K for FY2025, filed Mar 31, 2026Our business has been, and continues to be, developed with the goal of combining our technology with the infrastructure and resources of…View ↗
In addition, we have a collaborative agreement with California Boiler to sell and produce both fire tube boiler burner and flare products.…View ↗
In addition to targeting OEM manufacturers and service providers to augment our manufacturing footprint and on-time service capabilities…View ↗
We value and nurture our relationships with end users, and we view this sales channel as a critical path to overall market acceptance…View ↗
10-K for FY2025, filed Mar 31, 2026
Substantially all the Company’s operating activities, including its long-lived assets, are located within the United States. Customers in…View ↗
Do Revenues Turn Into Profits?
No. It lost $5.5M in FY2025.
10-K for FY2025, filed Mar 31, 2026
−$6.7MView ↗
10-K for FY2025, filed Mar 31, 2026
−$5.5MView ↗
10-K for FY2025, filed Mar 31, 2026
−$4.7MView ↗
How Are They Changing?
Growing. Revenue grew 8.6x in 4 years, from $607K in FY2021 to $5.2M in FY2025, about 71% a year.
Pure-hydrogen burner testing
The earlier report described hydrogen blends and treated pure hydrogen as a future extension; the latest report says a burner was demonstrated on pure hydrogen in an industrial-scale test heater.
10-K for FY2022, filed Mar 31, 2023 10-K for FY2025, filed Mar 31, 2026The current environmental impetus to reduce CO2 emissions has created an interest in burner technology that can use hydrogen as a fuel…View ↗
The current environmental impetus to reduce carbon dioxide emissions has created an interest in burner technology that can use hydrogen as…View ↗
Broader flare systems The earlier report described modular flare products; the latest adds complete or partial flare systems that include controls and stack elements.
China operations
The earlier report described boiler-burner commercialization in China, while the latest says the Beijing operation entered a suspended status.
10-K for FY2022, filed Mar 31, 2023 10-K for FY2025, filed Mar 31, 2026Our combustion technology has been successfully deployed in commercial projects such as down-stream refining and upstream oil production.…View ↗
On July 28, 2017, the Company incorporated a subsidiary, ClearSign Asia Limited, in Hong Kong to represent the Company’s business and…View ↗
Who Do They Compete With?
Competes with Callidus, Eclipse, Maxon, John Zink Hamworthy Combustion, General Electric, Haldor Topsøe, Hitachi, Linde, Zeeco, Fives Group, Cleaver Brooks, and Power Flame
10-K for FY2025, filed Mar 31, 2026The industry in which we operate is global in scope and populated by large, established suppliers of burners and post-combustion air…View ↗
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