ClearSign Technologies Corporation Announces Passing of Chief Financial Officer Brian Fike

SEATTLE, July 30, 2021 -- ClearSign Technologies Corporation (Nasdaq: CLIR) ("ClearSign" or the "Company"), an emerging leader in industrial combustion and sensing technologies that improve energy, operational efficiency and safety while dramatically reducing emissions, today announces with great sadness that Brian Fike, ClearSign’s Chief Financial Officer, has passed away.   “We are deeply saddened by