X0609 4 2026-06-23 0 0001856525 Core & Main, Inc. CNM 0001584184 Hardwick M Susan false C/O CORE & MAIN, INC. 1830 CRAIG PARK COURT ST. LOUIS MO 63146 1 0 0 0 0 Class A Common Stock 2026-06-23 4 A 0 2799 0 A 3379 D Represents restricted stock units granted as director compensation. The restricted stock units will vest upon the earlier to occur of the one year anniversary of the grant date or the Issuer's next annual meeting of shareholders to be held in 2027 and be settled in shares of Class A common stock, subject to the reporting person's continued service as a director of the Issuer. /s/ Jackie Burkhardt, as Attorney-in-Fact for M. Susan Hardwick 2026-06-24