X0306 4 2021-03-01 0 0001723866 Select Interior Concepts, Inc. SIC 0001848843 Adrian Karl 400 GALLERIA PARKWAY, SUITE 1760 ATLANTA GA 30339 0 1 0 0 President - RDS Class A Common Stock 2021-03-01 4 A 0 75000 0.00 A 75000 D Restricted Stock Units 0.00 2021-03-01 4 A 0 75000 A 2025-03-01 Class A Common Stock 75000 75000 D Reflects restricted stock units (RSUs) convertible into shares of Class A Common Stock granted on March 1, 2021 under the Issuer's 2017 Incentive Compensation Plan that vest in equal installments annually over four years, provided the Reporting Person remains employed by the Issuer through the applicable vesting date. Reflects performance-based RSUs that each represent a contingent right to receive one share of Class A Common Stock. The RSUs vest based on the closing price of the Issuer's common stock exceeding specific hurdles for 20 consecutive trading days, and subject to the Reporting Person's continued employment with the Issuer. /s/ Shawn K. Baldwin, attorney-in-fact 2021-03-03