MARTIN MARIETTA MATERIALS INC Stock: price and insider trades · United States · SEC (Form 4)

About MARTIN MARIETTA MATERIALS INC

Martin Marietta Materials, Inc. (ticker: MLM) is listed on the NYSE in the United States and is one of the leading U.S. building materials companies. Headquartered in Raleigh, North Carolina, at 4123 Parklake Avenue, the company traces its broader heritage to the Martin-Marietta industrial legacy, while the modern business has evolved into a focused supplier of heavy construction materials and mineral-based products. Martin Marietta operates a large footprint of more than 500 locations and serves markets across many U.S. states, as well as Canada and the Bahamas.([martinmarietta.com](https://www.martinmarietta.com/about-us?utm_source=openai)) Its core franchise is aggregates, which management consistently presents as the company’s most strategic and profitable product line. That is complemented by cement, ready-mixed concrete, asphalt, and paving services in selected vertically integrated markets. Martin Marietta also runs a Specialties segment that produces high-purity magnesia and dolomitic lime products used in environmental, industrial, agricultural, and specialty applications. This mix gives the group broader end-market exposure than a pure aggregates producer, while still keeping the portfolio anchored to essential materials used in infrastructure, commercial construction, industrial activity, and public works.([martinmarietta.com](https://www.martinmarietta.com/about-us?utm_source=openai)) From a competitive standpoint, Martin Marietta is widely viewed as a national leader in aggregates and heavy building materials. Its moat comes from resource scarcity, local permitting barriers, scale, logistics, and the ability to supply dense, economically advantaged markets. The company’s operating model benefits from strong positions in growth corridors and from demand tied to public infrastructure, industrial projects, and selective nonresidential construction. Management has also used portfolio optimization aggressively to sharpen the company’s focus and improve margin durability.([ir.martinmarietta.com](https://ir.martinmarietta.com/news-releases/news-release-details/martin-marietta-reports-fourth-quarter-and-full-year-2024?utm_source=openai)) Recent developments have been important for investors. In 2025, Martin Marietta announced an asset exchange with QUIKRETE that would give the company aggregates operations in several markets in exchange for its Midlothian cement plant, related terminals, and certain Texas ready-mix assets. It also completed the acquisition of Premier Magnesia, strengthening the Specialties business. In first-quarter 2026, the company reported revenue of $1.362 billion and higher adjusted earnings, reinforcing the view that its aggregates-led platform remains resilient through cyclical swings. For equity investors, MLM is best understood as a high-quality cyclical tied to U.S. construction demand, with an increasingly streamlined portfolio and a strong strategic position on the NYSE in the United States.([ir.martinmarietta.com](https://ir.martinmarietta.com/news-releases/news-release-details/martin-marietta-and-quikrete-exchange-certain-cement-and?utm_source=openai))