X0508 4 2026-03-11 0 0001856525 Core & Main, Inc. CNM 0001823429 HUEBERT MICHAEL G. C/O CORE & MAIN, INC. 1830 CRAIG PARK COURT ST. LOUIS MO 63146 0 1 0 0 President 0 Class A Common Stock 2026-03-11 4 F 0 447 49.16 D 14837 D Class A Common Stock 2026-03-12 4 A 0 10500 0 A 25337 D Options (Rights to Buy) 47.63 2026-03-12 4 A 0 37539 0 A 2036-03-12 Class A Common Stock 37539 37539 D Represents shares withheld by the Issuer for tax withholding purposes upon the vesting of a portion of restricted stock units ("RSUs") granted to the reporting person. Represents RSUs granted to the reporting person. Each RSU represents a contingent right to receive one share of Class A common stock of the Issuer. The RSUs vest in three equal annual installments on March 11, 2027, March 11, 2028 and March 11, 2029, subject to the terms of the associated Participant Restricted Stock Unit Agreement. The options vest in three equal installments on March 11, 2027, March 11, 2028 and March 11, 2029, subject to the terms of the associated Participant Stock Option Agreement. /s/ Mark Whittenburg, as Attorney-in-Fact for Michael G. Huebert 2026-03-13