| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Witkowski Mark R | Chief Executive Officer, Director | C/O CORE & MAIN, INC., 1830 CRAIG PARK COURT, ST. LOUIS | /s/ Mark Whittenburg, as Attorney-in-Fact for Mark R. Witkowski | 11 Mar 2026 | 0001866738 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | CNM | Class A Common Stock | Tax liability | -478 | -1.3% | $49.96* | 35,369 | 09 Mar 2026 | Direct | F1 | |
| transaction | CNM | Class A Common Stock | Tax liability | -937 | -2.6% | $49.38* | 34,432 | 10 Mar 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units granted to the reporting person. |