Select Energy Services, Inc. announced that the Board of Directors has appointed John D. Schmitz as President of the Company effective January 3, 2021. Mr. Schmitz will continue to serve as Chairman of the Board of the Company. Holli C. Ladhani, the former and President of the Company, has departed the Company effective January 3, 2021 to pursue other opportunities. As a result of her departure from the Company, Ms. Ladhani will no longer serve as a director on the Board of Directors or in any other capacity with Select Energy Services or any of its affiliated entities. Mr. Schmitz has served as Chairman of the Board since December 31, 2019, and previously served as Executive Chairman from November 2017 until December 31, 2019. Prior to the Company's combination with Rockwater Energy Solutions, Inc., Mr. Schmitz served as the Chief Executive Officer and Chairman from November 2016 through November 2017 and served as the Chief Executive Officer and Chairman of Select and predecessor entities since the Company was originally founded as Peak Oilfield Services, LLC and began operations in 2007.