On February 22, 2023, the Board of Directors of Smart Sand, Inc. appointed Christopher Green as the company's Vice President of Accounting and principal accounting officer, effective immediately. Mr. Green, age 40, joined the company in August 2018 and, prior to his appointment as the company's Vice President of Accounting and principal accounting officer, served in various roles with the Company, including as Controller, Assistant Controller, and Senior Manager of Financial Reporting, from August 2018 through January 2021 and April 2021 through February 22, 2023. From January 2021 through April 2021, Mr. Green served as Controller at Coventus-Flower Orthopedics.

Prior to joining the Company in 2018, Mr. Green served as Senior Manager of Technical Accounting at Unisys Corporation from April 2017 through July 2018. Prior to joining Unisys Corporation, Mr. Green served as Financial Reporting and SEC Compliance Manager at Willis Towers Watson from 2015 to 2017. From 2007 to 2015, Mr. Green was an External Auditor at various public accounting firms. Mr. Green received a B.A. Degree in Accounting (Magna Cum Laude) from Flagler College.