Power Solutions International, Inc. appointed Donald P. Klein to serve as the company’s Chief Financial Officer effective January 19, 2021. Since July 20, 2020, Mr. Klein, age 46, was acting as the Company’s Interim Chief Financial Officer. Mr. Klein served as PSI’s corporate controller and principal accounting officer from May 14, 2018 to July 20, 2020 with the responsibility of leading the accounting, tax, internal control and reporting functions.