ClearSign Technologies Corporation

CEO Jim Deller to Join Fireside Chat at 2:45ET on Oct 27th TULSA, OK / ACCESS Newswire / October 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, today announces that that it will be participating at the MS Microcaps & GeoInvesting Starting Five Virtual Conference. The virtual conference will take place October 27th, 2026 from 10:30 am to 3:30 PM EST, featuring presentations and fireside chats from a selected group of four U.S. and Canadian microcap companies, along with an investor presentation and Q&A sessions.

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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.

Project to demonstrate ClearSign Core™ Gen 2 Flex Fuel Process Burner designed to reduce emissions and energy costs at Kern Energy's facility TULSA, OK / ACCESS Newswire / September 30, 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, and Kern Energy, a critical California fuel supplier and renewable fuel pioneer, announce today that The U.S. Department of Energy's ("DOE") Industrial Technologies Office ("ITO") has selected ClearSign and Kern Energy for its Industrial Technology Validation ("ITV") program. The project is to support the installation and operation of ClearSign's Core™ Gen 2 Flex Fuel Process Burner at Kern Energy's facility.