MLM: Other company developments

Item 8.01. Other Events. As previously announced, on June 27, 2026, Martin Marietta Materials, Inc., a North Carolina corporation (“ Martin Marietta ” or the “ Company ”), and LNA Holding SRL, a société à responsabilité limitée organized under the laws of Belgium, entered into a Securities Sale Agreement, 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 ”). On August 5, 2026, Martin Marietta issued a press release announcing that it has received all necessary regulatory approvals with respect to the Transaction. Martin Marietta expects the Transaction to close in the third quarter of 2026, subject to customary closing conditions. A copy of the press release is furnished as Exhibit 99.1 hereto and is incorporated by reference herein. The information in this Item 8.01 of this Current Report on Form 8-K, including Exhibit 99.1 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 This Current Report on Form 8-K contains forward-looking st