MARTIN MARIETTA MATERIALS Business Summary

Martin Marietta Materials Inc. (MLM) operates an aggregates-led business model, generating the vast majority of its revenue through the extraction and sale of heavy building materials, including crushed stone, sand, and gravel. The company’s operations are organized into two primary segments: Building Materials, which encompasses aggregates, cement, and downstream products like ready-mixed concrete and asphalt, and Specialties, which focuses on magnesia-based chemical products and dolomitic lime. As of early 2026, the company has further optimized its portfolio through a significant asset exchange with QUIKRETE, acquiring high-volume aggregates operations in Virginia and Missouri while divesting its Texas ready-mix and Midlothian cement assets. Martin Marietta maintains a dominant market position as the second-largest aggregates producer in the United States, trailing only Vulcan Materials Company. It competes directly with other heavy-material giants such as CRH plc, Eagle Materials Inc., and CEMEX, distinguishing itself through a disciplined pricing strategy and a strategic geographic focus on high-growth "Sunbelt" states and infrastructure-heavy regions. Originally spun off from Lockheed Martin in 1996, the company is currently led by C. Howard Nye, who has served as Chairman, President, and CEO since 2010 and has been with the firm since 2006. Nye, a Duke University School of Law alumnus, has overseen the company’s SOAR (Strategic Operating Analysis and Review) initiatives, driving record profitability and a 126% five-year total shareholder return. The executive team includes Michael J. Petro, who was promoted to Senior Vice President and CFO in July 2025 following a decade-long tenure in strategy and development and a prior career in investment banking at Wells Fargo Securities. In early 2026, the company announced the appointment of George F. Schoen, a veteran M&A partner from Cravath, Swaine & Moore, as the incoming Executive Vice President and General Counsel to succeed the retiring Roselyn R. Bar. The company’s board is chaired by Nye and includes notable independent directors such as Lead Independent Director John Koraleski, former CEO of Union Pacific. Martin Marietta maintains a high institutional ownership profile of approximately 95%, with major positions held by firms such as JPMorgan Chase and Pelham Capital.