On October 23, 2020, David S. Schorlemer, currently employed as an advisor to the company, was appointed as Chief Financial Officer of the ProPetro Holding Corp. In connection with that appointment, Schorlemer will assume the role of the company’s principal financial officer. Schorlemer has two decades of experience in senior level positions in public and private companies. He most recently served as Executive Vice President, Chief Financial Officer, Treasurer and Secretary of Basic Energy Services Inc. Schorlemer assumed all duties of CFO effective October 23, 2020. The company also announced planned departure of Darin Holderness, the company’s former CFO.