ClearSign Receives Order for “M1” Series Burner from Tulsa Heaters Midstream (THM)

Fourth Burner Sold to THM for West Texas Customer

TULSA, OK / ACCESS Newswire / October 1, 2026 / ClearSign Technologies Corporation (NASDAQ:CLIR) (“ClearSign” or the “Company”), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and support the use of cleaner fuels including hydrogen, today announces that it has received another purchase order for a ClearSign Core™ M1 burner. The order was received from heater manufacturer Tulsa Heaters Midstream (“THM”) and is the fourth order from this customer destined for the Permian Basin in West Texas.

“THM has been an outstanding customer and sales channel for us, and the continued momentum of our M-Series midstream burners is extremely encouraging,” said Jim Deller, Ph.D., Chief Executive Officer of ClearSign. “With this order, THM has secured four M1-Series orders for this customer in the Permian Basin, and the seventh order overall into this region since May of this year. The Permian Basin in West Texas is one of the industry’s most important operating markets, and we believe it represents a significant and growing opportunity for ClearSign. With increasing market traction and continued customer adoption, we are confident in the growth potential of our M-Series product line and look forward to continuing to build on this momentum.”

The ClearSign Core™ M1 burner sold through THM will be installed in a new heater at a gas processing facility of an energy company in West Texas. The Company expects to deliver the burner in the fourth quarter of 2026.

Tulsa Heaters Midstream specializes in the midstream gas processing industry and is based in Tulsa, Oklahoma.

About ClearSign Technologies Corporation

ClearSign Technologies Corporation designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety, the use of hydrogen as a fuel and overall cost-effectiveness. Our patented technologies, embedded in established OEM products as ClearSign Core™ and ClearSign Eye™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries. For more information, please visit www.clearsign.com.

For further information:

Investor Relations:
Matthew Selinger
Firm IR Group for ClearSign
+1 415-572-8152
mselinger@firmirgroup.com

Cautionary Note on Forward-Looking Statements

All statements in this press release that are not based on historical fact are “forward-looking statements.” You can find many (but not all) of these statements by looking for words such as “approximates,” “believes,” “hopes,” “expects,” “anticipates,” “estimates,” “projects,” “intends,” “plans,” “would,” “should,” “could,” “may,” “will” or other similar expressions. While management has based any forward-looking statements included in this press release on its current expectations on the Company’s strategy, plans, intentions, performance, or future occurrences or results, the information on which such expectations were based may change. These forward-looking statements rely on a number of assumptions concerning future events and are subject to a number of risks, uncertainties and other factors, many of which are outside of the Company’s control, that could cause actual results to materially differ from such statements. Such risks, uncertainties and other factors include, but are not limited to, the Company’s ability to generate equipment and installation orders as a result of growing customer adoption and market traction in a product line, region or industry; the Company’s ability to successfully deliver, install, and meet the performance obligations of the Company’s burners in the Texas market and any other markets the Company may sell products in; the Company’s ability to further expand the sale of ultra-low NOx process, flare and boiler burners, as well as its M-Series process burners; the Company’s ability to, through its technologies, provide increased operational flexibility, cost reductions and uninterrupted operations to its customers; the Company’s ability to continue expanding its customer base in the refining, gas processing and midstream industries; the Company’s ability to provide low emission solutions based on continuously changing air permit requirements at the federal and state level; general business and economic conditions; the performance of management and the Company’s employees; the Company’s ability to obtain financing; whether the Company’s technology will be accepted and adopted and other factors identified in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025, and other periodic and current reports filed with the U.S. Securities and Exchange Commission and available for review at www.sec.gov. Furthermore, the Company operates in a competitive environment where new and unanticipated risks may arise. Accordingly, investors should not place undue reliance on forward-looking statements as a prediction of actual results. The Company disclaims any intention to, and, except as may be required by law, undertakes no obligation to, update or revise forward-looking statements to reflect events or circumstances that subsequently occur or of which the Company hereafter becomes aware.

SOURCE: ClearSign Technologies

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