| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| GERSHWIND ERIK | Chief Executive Officer, Director | C/O MSC INDUSTRIAL DIRECT CO., INC., 515 BROADHOLLOW ROAD, MELVILLE | /s/ Erik Gershwind | 2025-11-07 | 0001200390 |
| 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 | +4.78K | +0.31% | $0.00 | 1.57M | Nov 5, 2025 | Direct | F1 |
| transaction | MSM | Class A Common Stock, $0.001 par value | Options Exercise | $0 | +771 | +0.05% | $0.00 | 1.57M | Nov 5, 2025 | Direct | F2 |
| transaction | MSM | Class A Common Stock, $0.001 par value | Tax liability | -$246K | -2.83K | -0.18% | $86.68 | 1.57M | Nov 5, 2025 | Direct | F3 |
| holding | MSM | Class A Common Stock, $0.001 par value | 44.5K | Nov 5, 2025 | See footnotes | F4, F5 | |||||
| holding | MSM | Class A Common Stock, $0.001 par value | 355K | Nov 5, 2025 | See footnotes | F4, F6 | |||||
| holding | MSM | Class A Common Stock, $0.001 par value | 61K | Nov 5, 2025 | See footnotes | F4, F7 | |||||
| holding | MSM | Class A Common Stock, $0.001 par value | 102K | Nov 5, 2025 | See footnotes | F4, F8 |
| 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 | -4.78K | -100% | $0.00 | 0 | Nov 5, 2025 | Class A Common Stock, $0.001 par value | 4.78K | Direct | F1, F9 | |
| transaction | MSM | Dividend Equivalent Units | Options Exercise | $0 | -771 | -27.77% | $0.00 | 2.01K | Nov 5, 2025 | Class A Common Stock, $0.001 par value | 771 | Direct | F2 |
| 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 | The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. |
| F5 | Represents shares held by Grantor Retained Annuity Trusts of which the Reporting Person is the sole annuitant and trustee. |
| F6 | Represents shares held by trusts over whose trustee the Reporting Person can exercise remove and replace powers. |
| F7 | Represents shares held by a trust of which the Reporting Person is a co-trustee and beneficiary. |
| F8 | Represents shares held by a Trust of which the Reporting Person is a trustee. |
| F9 | 19,126 RSUs were granted on November 5, 2021. 4,781 RSUs vested on each of November 5, 2022 and November 5, 2023, and 4,782 RSUs vested on each of November 5, 2024 and November 5, 2025. |