TULSA, OK / ACCESS Newswire / September 22, 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 announced today that Chief Executive Officer, Jim Deller, Ph.D., will present at the Water Tower Research Insights Conference, a two-day virtual event taking place September 22 and 23, 2026. Jim Deller will give the company's presentation on Wednesday, September 23, 2026 at 09:30am ET and ClearSign will be available for one-on-one investor meetings.

• The conference features presentations from companies across Chemicals & Materials Technology, Consumer, Healthcare, Energy Transition & Sustainable Investing, Technology, Mobility & Industrial Technology, and Natural Resources.
• Register and view the full company lineup here: Register Here

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

About Water Tower Research

Modernizing Investor Engagement Through Research-Driven Communications. At WTR, we help companies and investors connect by creating expert information flow and strategies that are the foundation of a successful modern investor engagement platform. Our analysts and capital markets professionals bring decades of unrivaled Wall Street experience and insight to a new digital world of investor communications and engagement. Our research and investor content is open for everyone to access and distributed across traditional research aggregators like Bloomberg, FactSet, etc., proprietary direct distribution lists, social media, search engines, and our website. As a result, every institutional and retail investor has equal access to our high-quality company research. Our mission is to help companies proactively reach investors while bringing investors a consistent flow of quality information to help them understand our clients' businesses, industries, and the investment opportunities they present.

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 successfully complete engineering orders for its customers; whether the California refinery customer that submitted a purchaser order for the engineering and computer modeling of an enhanced process burner technology will issue corresponding equipment and installation orders for such technology following the successful completion of such engineering order; the Company's ability to generate equipment and installation orders following initial engineering orders from customers; the Company's ability to successfully deliver, install, and meet the performance obligations of the Company's burners in the California and 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 and boiler burners; the Company's ability to successfully perform engineering and equipment supply orders; general business and economic conditions; the performance of management and the Company's employees; the Company's ability to obtain financing, competition; whether the Company's technology will be accepted and adopted and other factors identified in the Company's Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission and available at www.sec.gov and other factors that are detailed in the Company's periodic and current reports 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 any 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 become aware.

SOURCE: ClearSign Technologies