CNM: Financial results

Item 2.02. Results of Operations and Financial Conditions On November 10, 2026, Core & Main, Inc. (“Core & Main” or the "Company") issued a press release announcing, among other things, certain unaudited preliminary estimated financial results for the fiscal third quarter ended November 1, 2026 in advance of its participation at the 2026 Baird Global Industrial Conference. Such results are not a comprehensive statement of our financial results for the quarterly period. The amounts are preliminary estimates and are subject to revision based on completion of the Company’s quarter-end financial closing process, final review by management, the related external review of the Company’s results of operations and the preparation of full financial statements and related notes. A copy of the press release is attached hereto as Exhibit 99.1. See “Unaudited Preliminary Estimated Results for the Third Quarter Ended November 1, 2026” in the press release for important considerations in respect of such unaudited preliminary estimated results. The information provided pursuant to this Item 2.02 and in Exhibit 99.1 is being “furnished” herewith and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing made by Core & Main under the Exchange Act or the Securities Act of 1933, as amended, regardless of any general incorporation language in such filings, except as shall be expressly set forth by specific reference in any such filings. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit No. Description 99.1 P ress release dated November 10, 2026 ** 104 Cover Page Interactive Data F