RALEIGH, N.C., June 29, 2026 (GLOBE NEWSWIRE) — Martin Marietta Materials, Inc. (NYSE: MLM) (Martin Marietta or the Company) today announced that it has entered into a definitive agreement to combine with Lhoist North America, Inc. (Lhoist North America or LNA), a subsidiary of Lhoist Group, for $13.5 billion in cash and shares of Martin Marietta common stock. The transaction is expected to be completed in the second half of 2026, subject to regulatory approvals.