On April 6, 2021, the Board of Directors of Nuverra Environmental Solutions, Inc. appointed David J. Nightingale to the Board. Mr. Nightingale, age 63, has served as the Chief Executive Officer of CIG Logistics since March 6, 2020. He previously served as the Executive Vice President, Wellsite Services of Select Energy Services, Inc. from November 2017 through March 29, 2019. Mr. Nightingale will serve as a member of the Audit Committee and the Compensation and Nominating Committee of the Board. There are no material plans, contracts, or arrangements, whether or not written, to which Mr. Nightingale is a party or in which Mr. Nightingale participates or entered into in connection with his appointment to the Board. On and effective as of April 5, 2021, John B. Griggs resigned from the Board. At the time of his resignation, Mr. Griggs served as the Chairman of the Audit Committee and as a member of the Compensation and Nominating Committee of the Board. Mr. Griggs has confirmed to the Company that his decision to resign was not the result of any disagreement with management or the Board, or related to the Company's operations, policies, or practices. In connection with Mr. Nightingale's appointment and Mr. Griggs' resignation, the Board appointed existing director Michael Y. McGovern as Chairman of the Audit Committee of the Board and Mr. Nightingale as Chairman of the Compensation and Nominating Committee of the Board.