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Mark R. Witkowski has served as the Company's CEO and as a member of the Board since March 2025, having previously served as the Company's CFO since its formation in April 2021, of Holdings since August 2019, and of OpCo since February 2016. Prior to being named CFO, Mr. Witkowski served as the OpCo's vice president of finance and as the credit director of OpCo from 2008 to 2012. He joined Core & Main in 2007 after working in the audit practice of PricewaterhouseCoopers LLP focusing on large public and private companies across various industries. Mr. Witkowski holds a B.S. in Business Administration with an emphasis in accounting and finance from Washington University in St. Louis.

Bradford A. Cowles has served as President of Core & Main since December 2022. Previously, he was the President of Fire Protection of Holdings since August 2019 and of Opco since January 2018. Mr. Cowles served as Chief Operating Officer of Opco from January 2017 to August 2019. Previously, Mr. Cowles led HD Supply's IT organization as Chief Information Officer from 2015 to 2017. Mr. Cowles joined HD Supply in 2005 and served as divisional Chief Information Officer for three of HD Supply's business units, including the Company. His previous experience also includes 10 years spent at the Michelin Tire Corporation in various leadership roles in R&D, Manufacturing and Quality. Mr. Cowles currently serves as a director of Johnstone Supply. Mr. Cowles holds a B.S. and M.S. in Mechanical Engineering from the University of Florida.

Michael G. Huebert has served as President of Core & Main since July 2024. Previously, he served as executive vice president of sales with Advanced Drainage Systems from June 2022 to July 2024, as senior vice president, sales, from 2020 to 2022 and in other senior sales and leadership roles prior to 2020. Mr. Huebert holds a B.B.A. in Marketing from Fresno State University.

Robyn L. Bradbury has served as Chief Financial Officer since the Executive Transition in March 2025. Previously, Ms. Bradbury served as the Company's Senior Vice President of Finance and Investor Relations since April 2024, and prior to being named Senior Vice President of Finance and Investor Relations, Ms. Bradbury held several positions in finance, including as Vice President of Finance and Investor Relations, Senior Director of Financial Planning & Analysis, Senior Manager of Financial Planning & Analysis, and other roles of increasing responsibility. Prior to joining Core & Main, Ms. Bradbury held various other positions in public accounting and corporate finance. Ms. Bradbury holds a B.S. in Accounting and Finance and an M.B.A. degree from Lindenwood University.

James G. Castellano has been an independent Board member of the Company since July 2021, Lead Independent Director since February 2024 and served as a member of the board of Opco from August 2017 until August 2019 and Holdings from August 2019 until July 2021. Mr. Castellano previously served as Managing Partner of accounting firm RubinBrown LLP from 1989 to 2004 and Chairman of RubinBrown LLP from 2004 to 2016, and as Chairman of Baker Tilly International, one of the world's 10 largest networks of independent accounting firms of which RubinBrown is a member, from 2002 to 2018. Mr. Castellano currently serves as a director of Fiduciary Counseling, Inc., and as an advisor to HBM Holdings and Roeslein & Associates. His previous experience includes serving as Chairman of the board of directors for the American Institute of Certified Public Accountants from 2001 to 2002. Mr. Castellano holds a B.S.B.A. in Accounting from Rockhurst University. On March 27, 2026, the Company also announced that effective as of the Transition Date James Castellano, the current Lead Independent Director of the Board, became the Chair of the Board effective as of April 1, 2026.

Margaret M. Newman has been an independent Board member of the Company since July 2021 and served as a member of the board of Opco from August 2017 until August 2019 and Holdings from August 2019 until July 2021. Ms. Newman serves as the Chief People Officer of Shearer's Snacks, LLC. Ms. Newman previously served as Chief People Officer of BrandSafway from July 2019 to April 2026. Ms. Newman previously served as the Chief Human Resources Officer of Keurig Dr. Pepper, Inc. from 2017 to 2019 and as the Chief People Officer of HD Supply from 2007 to 2017. At HD Supply, Ms. Newman helped guide that company through several mergers and acquisitions, strategic divestitures and an initial public offering. Before joining HD Supply, Ms. Newman held key Human Resources roles in Conseco Insurance and Sears Roebuck & Company. Ms. Newman currently serves as a director of Artera Services, LLC (formerly PowerTeam Services, LLC). Ms. Newman holds a B.A. in Psychology from Coe College and an M.A. in Social Work from the University of Wisconsin-Milwaukee.

Robert M. Buck has been an independent Board member of the Company since September 2022. Mr. Buck is President, CEO and a member of the board of directors of TopBuild Corp. (NYSE: BLD), a leading installer and specialty distributor of insulation and building material products to the North American construction industry since January 2021. Prior to TopBuild Corp., Mr. Buck served as Group Vice President of Masco Corporation, where he was responsible for the Installation and Other Services segment. Mr. Buck began his career with Masco Corporation in 1997 at Liberty Hardware Mfg. Corp., where he spent eight years in several operations leadership roles and worked extensively in international operations. He became Executive Vice President in 2005 and helped lead the merger of another Masco Corporation company with Liberty Hardware Mfg. Corp. before being promoted to the office of President in 2007. Mr. Buck holds a B.S. in Information Systems and Operations Management and an M.B.A. from the University of North Carolina at Greensboro.

Dennis G. Gipson has been an independent Board member of the Company since July 2021 and previously served as a member of the board of Opco from August 2017 until August 2019 and Holdings from August 2019 until July 2021. Mr. Gipson has over 40 years of experience in the food distribution and retailing industry, holding executive leadership positions at Hussmann International and Ingersoll Rand. From 2016 to 2019, Mr. Gipson was elected Board Chair of Fontbonne University, and from 2019 to 2020, he also served as interim President and COO. He was named a Trustee Emeritus when his term ended in 2020. Prior to joining Fontbonne University, Mr. Gipson served as CEO of Hussmann International from 2010 to 2017. Mr. Gipson holds a B.A. in Management from Maryville University in St. Louis and an Executive M.B.A. from Stanford University.

Orvin T. Kimbrough has been an independent Board member of the Company since July 2021 and served as a member of the board of Holdings from September 2020 until July 2021. Mr. Kimbrough has served on the board of Midwest BankCentre since 2015, became its CEO in 2019 and has been its Chairman of the board since January 2020. He also currently serves on the board of Korte Construction. He previously served on the board of NuSource Financial. Previously, Mr. Kimbrough served as President and CEO of United Way of Greater St. Louis from 2014 to 2019. Mr. Kimbrough holds a B.S.W. in Social Work from the University of Missouri-Columbia, an M.S.W. (Program Planning and Administration) from the University of Missouri-Columbia, an M.B.A. from the University of Missouri-St. Louis and an M.A. in Theology from the Aquinas Institute of Theology.

Kathleen M. Mazzarella has been an independent Board member of the Company since July 2021 and previously served as a member of the board of Opco from January 2019 until August 2019 and Holdings from August 2019 until July 2021. Ms. Mazzarella has been the President and CEO of Graybar, an employee-owned distributor of electrical, communications and data networking products, since 2012 and Chairman of Graybar since 2013. In addition to her role at Graybar, Ms. Mazzarella also serves as a director of The Cigna Group (NYSE: CI) and as independent chair of the board of directors of Waste Management, Inc. (NYSE: WM). Ms. Mazzarella previously served as a director of Express Scripts Holding Co. and as Chairman of the Federal Reserve Bank of St. Louis. Ms. Mazzarella holds a B.A. in Behavioral Science from National Louis University and an M.B.A. from Webster University.

James D. Hope has been an independent Board member of the Company since May 2024. Mr. Hope was Executive Vice President and Chief Financial Officer of Performance Food Group Company (PFG, NYSE: PFGC) from 2018 to 2022 and Executive Vice President of Operations from 2014 to 2018. Prior to joining PFG, Mr. Hope spent 26 years in various executive leadership roles at Sysco Corporation (NYSE: SYY), most recently serving as Executive Vice President of Business Transformation. Before that, Mr. Hope progressed through several financial and sales leadership positions, including Senior Vice President of Sales and Marketing and President and CEO of Sysco's Kansas City operating company. Mr. Hope holds a B.S. in Business Administration from the University of Texas at Austin.

Bhavani Amirthalingam has been an independent Board member of the Company since April 2022. Ms. Amirthalingam has served as the Chief Growth and Transformation Officer of Acuity Inc. (NYSE: AYI) since November 2024. Previously, Ms. Amirthalingam served as Executive Vice President and Chief Customer and Technology Officer of Ameren, from March 2023 to March 2024, and as the Senior Vice President and Chief Digital Information Officer of Ameren from March 2018 to March 2023. Ms. Amirthalingam also served as the Chief Information Officer of Schneider Electric from January 2015 to February 2018. Her previous experience includes 15 years at World Wide Technology as Chief Information Officer and Vice President, Customer Solutions & Innovation. Ms. Amirthalingam holds a B.S. in Computer Science from Madras University and an M.B.A. from SP Jain Institute of Management & Research.

Carla D. Harper has served as Senior Vice President, Human Resources of Core & Main since August 2025. Ms. Harper joined Core & Main in September 2017, and prior to assuming her current role, she served as Vice President, Human Resources, and previously in other positions of increasing responsibility. Before joining the Company, Ms. Harper held a regional human resources role at Interior Specialists, Inc. Ms. Harper holds a B.A. in Music from University of Nevada, Las Vegas and an M.B.A. from the Jack Welch Management Institute.

Jeffrey D. Giles has served as Executive Vice President, Corporate Development of the Company since February 2026. He rejoined the Company from Garden City Equity, where he was a Senior Partner and Chief Investment Officer from April 2025 to February 2026. Mr. Giles was previously Executive Vice President, Corporate Development of the Company from March 2024 until April 2025, and Vice President, Corporate Development of the Company from July 2021 until March 2024, of OpCo from March 2018 to August 2019, and of Holdings from August 2019 to July 2021. Prior to joining Core & Main in 2018, he served as Director of Business Development at Barry-Wehmiller Group from 2013 to 2018. Prior to that, Mr. Giles was Vice President and Director of Business Development at Bertram Capital, a leading lower middle market private equity firm. Mr. Giles holds a B.A. in Business from Wake Forest University and a M.B.A. from Washington University in St. Louis.

Jackie M. Burkhardt has served as General Counsel, Chief Compliance Officer and Secretary of the Company since April 2026. Previously, she served as the Company's Deputy General Counsel and Assistant Secretary since May 2023. Prior to being named Deputy General Counsel, Ms. Burkhardt served as the Assistant General Counsel since September 2021 and as the Director of Legal since February 2019. Prior to joining Core & Main, Ms. Burkhardt was in private practice in St. Louis, including at Lewis Rice LLC. Ms. Burkhardt holds a Bachelor of Arts from DePauw University and a Juris Doctor from Washington University in St. Louis.

On March 27, 2026, Core & Main, Inc. announced that effective as of April 1, 2026 the Board of Directors of the Company appointed M. Susan Hardwick. Ms. Hardwick is the former Chief Executive Officer of American Water Works Company, Inc. (AWK) (American Water), a role in which she served from 2022 to 2025. She previously served as Chief Financial Officer of American Water from 2019 to 2022. Prior to joining American Water, Ms. Hardwick served as Executive Vice President and Chief Financial Officer of Vectren Corporation, where she played a key role in the company's strategic direction. Ms. Hardwick brings to the Board extensive executive leadership experience in the regulated utility industry and a well-rounded background in finance, capital allocation, and strategic transactions.

Mr. John Weldon Stephens, Vice President, Corporate Controller and Principal Accounting Officer of the company.