Tulsa, OK., April 7, 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 safety, and support the use of cleaner fuels including hydrogen, today announced that Chief Executive Officer Jim Deller, will participate in the upcoming Water

TULSA, OKLAHOMA / ACCESS Newswire / March 10, 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 safety, and support the use of cleaner fuels including hydrogen, today announced a 1-for-10 reverse stock split of its outstanding common stock.

Hosting Call at 5pm ET on Tuesday, February 24th Tulsa, OK., February 18, 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 safety, and support the use of cleaner fuels including hydrogen, announces that on Tuesday, February 24th, 2026, at

Fourth Quarter Revenues up Approximately 510% Year-over-Year Full Year Revenues up Approximately 44% Year-over-Year TULSA, Okla., January 7, 2025 -- 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 safety, and support the use of cleaner fuels

  TULSA, Okla., November 19, 2025 – 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 safety, and support the use of cleaner fuels including hydrogen, today provides an update on operations for the quarter ended September

Hosting Call at 5pm ET on Wednesday, November 19th TULSA, OK / ACCESS Newswire / November 6, 2025 / ClearSign Technologies Corporation (Nasdaq:CLIR) ("ClearSign" or the "Company an emerging leader in industrial combustion and sensing technologies that support decarbonization, improve operational and energy efficiency, enable the use of hydrogen as a fuel and enhance safety while dramatically reducing emissions,