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, one of its "M" Series process burners. The order came from heater manufacturer Tulsa Heaters Midstream ("THM") and is the second order from this customer within a month.

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

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