X0508 4 2026-02-28 0 0001529628 Smart Sand, Inc. SND 0001687143 WHELAN RONALD P C/O SMART SAND, INC. 1000 FLORAL VALE BOULEVARD, SUITE 225 YARDLEY PA 19067 0 1 0 0 SEE REMARKS 0 Common Stock 2026-02-28 4 F 0 6250 5.19 D 442260 D Represents shares withheld for tax purposes upon the vesting of restricted stock granted to the Reporting Person, the vesting of which is based on the Reporting Person's continued employment with or service to the Issuer on the applicable vesting date. The Reporting Person is Executive Vice President of Last Mile Services of the Issuer. /s/ Lee E. Beckelman as Attorney-in-Fact for Ronald P. Whelan 2026-03-03