Robert B. Aarnes - 22 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
22 Jan 2026
Net transactions value
$0
Form type
4
Filing time
26 Jan 2026, 16:17:09 UTC
Previous filing
16 Dec 2025
Next filing
26 Jan 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

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +799 $0.000000 799 22 Jan 2026 Direct F1
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +24 +3% $0.000000 823 22 Jan 2026 Direct F2

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) Options Exercise $0 -799 -50% $0.000000 799 22 Jan 2026 Class A Common Stock, $0.001 par value 799 Direct F1, F3
transaction MSM Dividend Equivalent Units Options Exercise $0 -24 -49% $0.000000 25 22 Jan 2026 Class A Common Stock, $0.001 par value 24 Direct F2, F4
* 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 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 to receive one share of Common Stock.
F3 1,598 RSUs were granted on January 22, 2025. 799 RSUs vested on January 22, 2026. 799 RSUs vest on January 22, 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.
F4 Includes 17.818 dividend equivalent units accrued on April 23, 2025, 15.676 dividend equivalent units accrued on July 23, 2025, and 15.888 dividend equivalent units accrued on November 26, 2025 with respect to the outstanding awards of restricted stock units (RSUs). Such dividend equivalent units vest at the same time(s) as the underlying RSUs and represent a contingent right to receive one share of Common Stock.