144 0002060011 XXXXXXXX LIVE 0001856525 Core & Main, Inc. 001-40650 1830 Craig Park Court St. Louis MO 63146 314-432-4700 Robyn L. Bradbury Officer Class A Common Stock J.P. Morgan Securities LLC 270 Park Avenue, 10th Floor New York NY 10017 35000 1818950 188072306 04/17/2026 NYSE Class B Common Stock; Partnership Interests (C&M Holdings, LP) 03/31/2021 Equity incentive award through Core & Main Management Feeder LLC Issuer N 35000 03/31/2021 N/A Y The shares covered by this filing are Class B Common Stock that will be exchanged for Class A Common Stock on 04/17/26 or within three months from the date of this filing. 04/17/2026 01/15/2026 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Robyn L. Bradbury