Martina McIsaac - 04 Nov 2025 Form 4 Insider Report for MSC INDUSTRIAL DIRECT CO INC (MSM)

Role
President & COO
Signature
/s/ Martina McIsaac
Issuer symbol
MSM
Transactions as of
04 Nov 2025
Net transactions value
-$57,458
Form type
4
Filing time
05 Nov 2025, 18:52:17 UTC
Previous filing
05 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
McIsaac Martina President & COO C/O MSC INDUSTRIAL DIRECT CO., INC., 515 BROADHOLLOW ROAD, MELVILLE /s/ Martina McIsaac 05 Nov 2025 0001947693

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 +1,135 +18% $0.000000 7,345 04 Nov 2025 Direct F1
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +135 +1.8% $0.000000 7,480 04 Nov 2025 Direct F2
transaction MSM Class A Common Stock, $0.001 par value Tax liability $26,817 -310 -4.1% $86.42 7,170 04 Nov 2025 Direct F3
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +1,397 +19% $0.000000 8,567 04 Nov 2025 Direct F1
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +59 +0.68% $0.000000 8,626 04 Nov 2025 Direct F2
transaction MSM Class A Common Stock, $0.001 par value Tax liability $30,640 -355 -4.1% $86.42 8,271 04 Nov 2025 Direct F3

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 -1,135 -50% $0.000000 1,136 04 Nov 2025 Class A Common Stock, $0.001 par value 1,135 Direct F1, F4
transaction MSM Dividend Equivalent Units Options Exercise $0 -135 -17% $0.000000 663 04 Nov 2025 Class A Common Stock, $0.001 par value 135 Direct F2
transaction MSM Restricted Stock Units (RSU) Options Exercise $0 -1,397 -25% $0.000000 4,191 04 Nov 2025 Class A Common Stock, $0.001 par value 1,397 Direct F1, F5
transaction MSM Dividend Equivalent Units Options Exercise $0 -59 -8.8% $0.000000 604 04 Nov 2025 Class A Common Stock, $0.001 par value 59 Direct 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 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 Disposition of Class A Common Stock to the Issuer to cover tax withholding obligations arising from the vesting of RSUs and DEUs.
F4 4,541 RSUs were granted on November 4, 2022. 1,135 RSUs vested on each of November 4, 2023, November 4, 2024 and November 4, 2025. 1,136 RSUs vest on 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.
F5 5,588 RSUs were granted on November 4, 2024. 1,397 RSUs vested on November 4, 2025. 1,397 RSUs vest on each of November 4, 2026, 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.