Martin Marietta to Acquire Lhoist North America in $13.5B Deal
Martin Marietta Materials announced a $13.5 billion cash-and-stock deal to combine with Lhoist North America, reshaping the industrial minerals landscape.
Martin Marietta Materials, the Raleigh, North Carolina-based aggregates giant, has agreed to acquire Lhoist North America — a subsidiary of Belgium's Lhoist Group — in a transaction valued at $13.5 billion, to be funded through a combination of cash and Martin Marietta common stock. The deal, announced June 29, 2026, signals a significant consolidation move in the North American industrial minerals sector.
Lhoist North America is a major producer of lime and limestone products, materials that sit at the intersection of steel manufacturing, water treatment, and environmental remediation. By absorbing LNA's operations, Martin Marietta would dramatically expand its footprint beyond construction aggregates into chemically processed minerals — a strategic pivot that broadens both its customer base and its exposure to industrial demand cycles.
Read more Extreme Weather Is Becoming a Real Risk for AI Data Centers →
The transaction is structured as a definitive agreement and is expected to close in the second half of 2026, contingent on receiving the necessary regulatory approvals. Deals of this scale in the extractive materials industry typically draw scrutiny from antitrust regulators, given the regional concentration of quarrying and processing assets, making the approval timeline a key variable for investors to watch.
For Martin Marietta, which trades on the NYSE under the ticker MLM, the combination would represent one of the largest acquisitions in its corporate history and could reposition it as a more diversified materials company rather than a pure-play aggregates producer. The use of stock alongside cash also suggests management is mindful of balance-sheet discipline while pursuing transformational scale.
Continue reading at GlobalNewswire.
