Core & Main, Inc. announced changes to its Board of Directors and executive leadership, effective April 1, 2026. M. Susan Hardwick was appointed as a new Class III director and a member of the Talent and Compensation Committee. Ms. Hardwick brings extensive executive leadership experience from the regulated utility industry, having served as CEO (2022-2025) and CFO (2019-2022) of American Water Works Company, Inc. and CFO of Vectren Corporation. Stephen LeClair retired from his roles as Executive Chair, Class II director, and Chair of the Board. James Castellano, previously the Lead Independent Director, was appointed as the new Chair of the Board. James Hope became the Chair of the Audit Committee, and Robert Buck was appointed as a member of the Audit Committee. Ms. Hardwick's compensation includes a pro rata portion of the standard annual compensation for board service ($225,000, comprised of $130,000 in restricted stock units and $95,000 in cash) plus an additional $10,000 annually in cash for committee service. Ms. Hardwick's appointment increases the number of independent directors to nine on the ten-member Board.