X0407 4 2023-06-28 0 0001856525 Core & Main, Inc. CNM 0001733097 Amirthalingam Bhavani C/O CORE & MAIN, INC. 1830 CRAIG PARK COURT ST. LOUIS MO 63146 1 0 0 0 0 Class A Common Stock 2023-06-28 4 A 0 3927 0.00 A 10518 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 stockholders to be held in 2024 and be settled in shares of Class A common stock, subject to the reporting person's continued service as a director of the Issuer. Includes RSUs previously granted to the reporting person. /s/ Mark Whittenburg, as Attorney-in-Fact for Bhavani Amirthalingam 2023-06-30