Martin Marietta Materials has agreed to combine with Lhoist North America in a transaction valued at $13.5 billion, comprising $7.0 billion in cash and $6.5 billion in Martin Marietta common stock. The deal will establish Martin Marietta as the nation's leading lime and limestone producer, adding 20 quarries and production facilities, 45 distribution terminals, and over 2 billion tons of high-quality limestone reserves with a useful life exceeding 200 years. Lhoist North America generated $1.8 billion in gross sales and $786 million of Adjusted EBITDA for the twelve months ended December 31, 2025. The transaction is expected to close in the second half of 2026, subject to regulatory approvals, and is projected to be accretive to earnings and margins in the first full year following completion, with approximately $85 million in annual run-rate cost synergies. Upon closing, the Berghmans family is expected to own approximately 15% of Martin Marietta on a fully diluted basis and will have the right to appoint one director and one observer to the board.
Martin Marietta Materials IncMartin Marietta is the acquirer in a $13.5B deal expected to be accretive to earnings and margins with $85M annual cost synergies.