On March 20, 2019, Select Energy Services, Inc. provided notice of termination to David Nightingale, Executive Vice President, Wellsite Services, whereby he will cease to be an officer and employee of the company and its subsidiaries as of March 29, 2019. In connection with the changes to the company’s operating segments, the company decided to realign leadership responsibilities to such operating segments of the company and appoint Mitchell Shauf as Executive Vice President, Water Services effective as of April 1, 2019. Mr. Shauf is currently employed by the Company as Senior Vice President, Operations. Additionally, in connection with the aforementioned change in operating segments, Michael Skarke will be appointed as the Executive Vice President, Water Infrastructure effective as of April 1, 2019. Mr. Skarke is currently employed by the company as the Executive Vice President, Water Solutions.