X0306 4 2020-01-17 0001003078 MSC INDUSTRIAL DIRECT CO INC MSM 0001348379 Jones Douglas E C/O MSC INDUSTRIAL DIRECT CO., INC. 75 MAXESS ROAD MELVILLE NY US 11747 0 1 0 0 EVP, Chief Supply Chain Class A Common Stock, $0.001 par value 2020-01-17 4 M 0 1372 58.90 A 11478 D Class A Common Stock, $0.001 par value 2020-01-17 4 S 0 1372 79.00 D 10106 D Class A Common Stock, $0.001 par value 2799 I By 401(k) Plan Options (right to buy) 2020-01-17 4 M 0 1372 58.9 D 2022-10-18 Class A Common Stock, $0.001 par value 1372 29449 D Includes shares acquired under the company's Associate Stock Purchase Plan. Represents options to purchase the Issuer's Class A Common Stock, $0.001 par value ("Common Stock"). An option to purchase 30,821 shares of the Issuer's Common Stock was issued to the Reporting Person under the Issuer's 2015 Omnibus Incentive Plan. 7,705 shares of Common Stock became exercisable on each of October 19, 2016, October 19, 2017, October 19, 2018 and 7,706 shares of Common Stock became exercisable on October 19, 2019. /s/ Douglas Jones 2020-01-21