On February 9, 2021, Smart Sand, Inc. received a letter of resignation from Colin Leonard indicating that he has resigned from his position on the Board of Directors of the Company and from each of the Audit Committee of the Board and the Nominating and Corporate Governance Committee of the Board. On February 9, 2021, the Company appointed Frank Porcelli to serve as a Class II director of the Company until the Company's next annual meeting of stockholders and until his successor is duly elected and qualified. The Board has determined that Mr. Porcelli qualifies to serve as an independent director and has designated him as a member of the Board's Audit Committee and Nominating Committee. Per the stockholders' agreement between the Company, an affiliate of Clearlake Capital Group, L.P., and Keystone Cranberry, LLC, Clearlake has designated Mr. Porcelli to replace Mr. Leonard on the Board. Mr. Porcelli has over thirty years of experience in various finance and wealth management roles. He is currently a partner in Convergency Partners. Prior to this, from 2006 to 2020, he had various roles with Blackrock, Inc., including as a Managing Director and the Chairman of BlackRock's US Wealth Advisory business.