On January 22, 2019, the Board of Directors of CARBO Ceramics Inc. temporarily increased the size of the Board from six directors to seven directors. In connection therewith, the Board appointed Carla Mashinski to fill the newly created vacancy and serve as an independent director of the company, effective as of January 22, 2019. Mashinski’s term commenced on January 22, 2019 and expires at the Annual Meeting of the Stockholders of the Company in 2019, at which Ms. Mashinski shall stand for election. Ms. Mashinski was also appointed to serve on the Compensation Committee, the Audit Committee and the Nominating and Corporate Governance Committee of the Board. On January 22, 2019, William C. Morris, Chairman of the Board and a director of the Company, informed the Company that he would not stand for re-election to the company’s Board at the Annual Meeting. Mr. Morris will serve out his remaining term as a director, which will expire at the Annual Meeting. On January 22, 2019, the Board nominated for election at the upcoming Annual Meeting Sigmund L. Cornelius, Chad C. Deaton, H. E. Lentz, Jr., Randy L. Limbacher, Gary A. Kolstad and Carla S. Mashinski to serve as directors until the Annual Meeting of the Stockholders of the Company in 2020.