MLM · 8-K · 20260824PR000946

Acquisition / Partnership / Divestiture

MARTIN MARIETTA MATERIALS INC · 2026-08-24 · Importance 65 · Surprise 60

Martin Marietta completed its combination with Lhoist North America, Inc. (LNA), a subsidiary of Lhoist Group, on August 21, 2026. LNA produces high calcium lime, dolomitic lime and industrial mineral products for end markets including domestic steel manufacturing, infrastructure, heavy nonresidential construction and environmental solutions. The company said the combination expands its Specialties platform and gives it more than 2 billion tons of high-quality limestone reserves; it expects to provide updated full-year 2026 revenue and Adjusted EBITDA guidance with its third-quarter results.

Key facts

• The combination gives Martin Marietta more than 2 billion tons of high-quality limestone reserves in North America. source
• Martin Marietta completed its previously announced combination with Lhoist North America, Inc. on August 21, 2026. source
• Martin Marietta said the combination establishes it as the nation's leading producer of limestone products. source
• Martin Marietta said the LNA combination advances its SOAR 2030 objectives by expanding its Specialties platform and enhancing the quality, scale and resilience of its business. source