Martin Marietta completes acquisition of Lhoist North America

Martin Marietta Materials (NYSE: MLM) announced the completion of its combination with Lhoist North America (LNA), a subsidiary of Lhoist Group, on Aug. 21, 2026.

LNA produces high calcium lime, dolomitic lime and industrial mineral products, serving end markets that include domestic steel manufacturing, infrastructure, heavy nonresidential construction and environmental solutions.

According to the company's press release, the combined entity holds more than 2 billion tons of high-quality limestone reserves across North America. Martin Marietta claims the transaction makes it the nation's leading producer of limestone products.

Ward Nye, Chair, President and CEO of Martin Marietta, said the transaction "advances our SOAR 2030 objectives by expanding our Specialties platform and further enhancing the quality, scale and resilience of our business."

Martin Marietta said it expects to provide updated full-year 2026 revenue and Adjusted EBITDA guidance reflecting the transaction when it releases its third-quarter financial results.

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