Martin Marietta Corporation will merge with Lhoist North America.

On June 29th, Martin Marietta Materials, Inc. announced that it has entered into a definitive agreement with Lhoist North America, a subsidiary of the Lhoist Group, to merge for $13.5 billion in cash and Martin Marietta common stock. The transaction is expected to be completed in the second half of 2026, subject to regulatory approvals.