X0306 4 2020-08-31 0 0001003078 MSC INDUSTRIAL DIRECT CO INC MSM 0001821740 Actis-Grande Kristen C/O MSC INDUSTRIAL DIRECT CO., INC. 75 MAXESS ROAD MELVILLE NY 11747 0 1 0 0 EVP & Chief Financial Officer Restricted Stock Units (RSUs) 2020-08-31 4 A 0 3034 0 A Class A Common Stock, $0.001 par value 3034 3034 D Each RSU represents a contingent right to receive one share of Common Stock. 758 of 3,034 RSUs granted on August 31, 2020 vest on each of August 31, 2021, and August 31, 2022, and 759 RSUs vest on each of August 31, 2023, and August 31, 2024, provided that the Reporting Person remains continuously employed by the Issuer through each applicable vesting date. The vested shares will be delivered to the Reporting Person upon vesting. /s/ Kristen Actis-Grande 2020-09-02