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

Role
President & COO
Signature
/s/ Martina McIsaac
Stock symbol
MSM
Transactions as of
Nov 4, 2025
Transactions value $
-$57,458
Form type
4
Date filed
11/5/2025, 06:52 PM
Previous filing
Nov 5, 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 2025-11-05 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 +1.14K +18.28% $0.00 7.35K Nov 4, 2025 Direct F1
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +135 +1.84% $0.00 7.48K Nov 4, 2025 Direct F2
transaction MSM Class A Common Stock, $0.001 par value Tax liability -$26.8K -310 -4.15% $86.42 7.17K Nov 4, 2025 Direct F3
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +1.4K +19.48% $0.00 8.57K Nov 4, 2025 Direct F1
transaction MSM Class A Common Stock, $0.001 par value Options Exercise $0 +58.6 +0.68% $0.00 8.63K Nov 4, 2025 Direct F2
transaction MSM Class A Common Stock, $0.001 par value Tax liability -$30.6K -355 -4.11% $86.42 8.27K Nov 4, 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 -1.14K -49.98% $0.00 1.14K Nov 4, 2025 Class A Common Stock, $0.001 par value 1.14K Direct F1, F4
transaction MSM Dividend Equivalent Units Options Exercise $0 -135 -16.95% $0.00 663 Nov 4, 2025 Class A Common Stock, $0.001 par value 135 Direct F2
transaction MSM Restricted Stock Units (RSU) Options Exercise $0 -1.4K -25% $0.00 4.19K Nov 4, 2025 Class A Common Stock, $0.001 par value 1.4K Direct F1, F5
transaction MSM Dividend Equivalent Units Options Exercise $0 -58.6 -8.84% $0.00 604 Nov 4, 2025 Class A Common Stock, $0.001 par value 58.6 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.