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 third order from this customer within a couple of months.

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 fourth quarter of 2026.