Julie Valsa Rockett - 05 Sep 2025 Form 3 Insider Report for MSC INDUSTRIAL DIRECT CO INC (MSM)

Role: VP, Chief People Officer
Signature: /s/ Julie Rockett
Issuer symbol: MSM
Transactions as of: 05 Sep 2025
Net transactions value: $0
Form type: 3
Filing time: 16 Sep 2025, 16:52:30 UTC
Next filing: 04 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Rockett Julie Valsa	VP, Chief People Officer	C/O MSC INDUSTRIAL DIRECT CO., INC., 515 BROADHOLLOW ROAD, MELVILLE	/s/ Julie Rockett	16 Sep 2025	0002086182

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	MSM	Class A Common Stock, $0.001 par value						1,133	05 Sep 2025	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	MSM	Restricted Stock Units (RSU)							05 Sep 2025	Class A Common Stock, $0.001 par value	103		Direct	F1, F2
holding	MSM	Restricted Stock Units (RSU)							05 Sep 2025	Class A Common Stock, $0.001 par value	212		Direct	F2, F3
holding	MSM	Restricted Stock Units (RSU)							05 Sep 2025	Class A Common Stock, $0.001 par value	268		Direct	F2, F4
holding	MSM	Restricted Stock Units (RSU)							05 Sep 2025	Class A Common Stock, $0.001 par value	434		Direct	F2, F5
holding	MSM	Restricted Stock Units (RSU)							05 Sep 2025	Class A Common Stock, $0.001 par value	61		Direct	F2, F6
holding	MSM	Dividend Equivalent Units							05 Sep 2025	Class A Common Stock, $0.001 par value	83		Direct	F7

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	411 RSUs were granted on November 5, 2021. 102 RSUs vested on November 5, 2022 and 103 RSUs vested on each of November 5, 2023 and November 5, 2024. 103 RSUs vest on November 5, 2025, 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.
F2	Each RSU represents a contingent right to receive one share of Common Stock.
F3	423 RSUs were granted on November 4, 2022. 105 RSUs vested on November 4, 2023 and 106 RSUs vested on November 4, 2024. 106 RSUs vest on each of November 4, 2025 and November 4, 2026, 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.
F4	357 RSUs were granted on November 3, 2023. 89 RSUs vested on November 3, 2024. 89 RSUs vest on each of November 3, 2025 and November 3, 2026, and 90 RSUs vest on November 3, 2027, 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.
F5	434 RSUs were granted on November 4, 2024. 108 RSUs vest on each of November 4, 2025 and November 4, 2026, and 109 RSUs vest on each of November 4, 2027, and November 4, 2028, 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.
F6	61 RSUs were granted on December 17, 2024. 20 RSUs vest on each of December 17, 2025 and December 17, 2026, and 21 RSUs vest on December 17, 2027, 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.
F7	The dividend equivalent units accrued with respect to outstanding awards of restricted stock units (RSUs) and vest at the same time(s) as the underlying RSUs. Each dividend equivalent unit represents a contingent right ot receive one share of Common Stock.