MLM: Company disclosure

Item 7.01. Regulation FD Disclosure. On June 29, 2026, Martin Marietta Materials, Inc., a North Carolina corporation (“ Martin Marietta ” or the “ Company ”) announced in a press release the execution of a Securities Sale Agreement, dated June 27, 2026, between Martin Marietta and LNA Holding SRL, a société à responsabilité limitée organized under the laws of Belgium, pursuant to which Martin Marietta will acquire all of the outstanding equity interests in Lhoist North America, Inc., which owns and operates the business of producing, distributing, marketing and selling lime, dolomitic lime, limestone- and dolomitic stone-based industrial minerals and products, and aggregates in North America for $13.5 billion in cash and shares of Martin Marietta common stock (the “ Transaction ”). A copy of the press release is furnished as Exhibit 99.1 hereto. An investor presentation with respect to the Transaction is also furnished as Exhibit 99.2 hereto. The information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1 and Exhibit 99.2 attached hereto, is being furnished to the U.S. Securities and Exchange Commission and shall not be deemed “filed” for purposes of Section 18 of the U.S. Securities Exchange Act of 1934, as amended (the “ Exchange Act ”), or otherwise subject to the liabilities of that section. This information shall not be deemed to be incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Forward-Looking Statements Investors are cautioned that all statements in this Current Report on Form 8-K that relate to the future involve risks and uncertainties, and are based on assumptions that the Company believes in go