Martin Marietta Materials, Inc. (NYSE: MLM) is a leading producer of aggregates and heavy building materials serving the construction and infrastructure markets. The company operates quarries, sand and gravel pits, and other extraction sites to supply crushed stone, sand and gravel, and a range of value‑added products for use in roads, bridges, commercial and residential construction, and other civil engineering projects.
In addition to its core aggregates business, Martin Marietta manufactures and sells asphalt, ready‑mixed concrete and related materials and services. Its integrated operations include processing, transportation and distribution capabilities that support large-scale infrastructure projects and local construction activity. The company also provides technical support and logistical solutions to contractors and public agencies to help manage project supply chains and specifications.
Martin Marietta’s business is focused primarily on North America, with operations and sales concentrated across the United States and Canada. The company has expanded over time through strategic acquisitions and development of regional production networks to serve urban and infrastructure growth corridors. Its customer base includes federal, state and local governments, highway contractors, commercial developers and building contractors.
Tracing its origins to the materials activities associated with the former Martin Marietta Corporation, the company has evolved into a specialist in heavy materials and aggregates. Martin Marietta is led by an experienced executive team and board that oversee operations, capital projects and environmental, health and safety practices typical of large‑scale extractive and construction materials businesses. The company emphasizes operational efficiency, regulatory compliance and sustainable practices in its quarrying and production operations.