Robert B. Aarnes - 23 Jan 2026 Form 4 Insider Report for MSC INDUSTRIAL DIRECT CO INC (MSM)

Role: Director
Signature: /s/ Robert B. Aarnes
Issuer symbol: MSM
Transactions as of: 23 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 26 Jan 2026, 17:29:22 UTC
Previous filing: 26 Jan 2026
Next filing: 09 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Aarnes Robert B	Director	C/O MSC INDUSTRIAL DIRECT CO., INC., 515 BROADHOLLOW ROAD, MELVILLE	/s/ Robert B. Aarnes	26 Jan 2026	0001754267

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
transaction	MSM	Restricted Stock Units (RSU)	Award	$0	+1,603		$0.000000	1,603	23 Jan 2026	Class A Common Stock, $0.001 par value	1,603		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each RSU represents a contingent right to receive one share of Common Stock.
F2	1,603 RSUs were granted on January 23, 2026, and vest on January 23, 2027, provided that the Reporting Person continues to serve as Outside Director through the applicable vesting date. The vested shares will be delivered to the Reporting Person upon vesting.