Martin Marietta Materials IncMLM
What Martin Marietta Materials Inc does.
Martin Marietta Materials, Inc. (the Company or Martin Marietta) is a leading natural resource-based building materials company. The Company supplies aggregates (crushed stone, sand and gravel) through its network of approximately 400 quarries, mines and distribution yards in 28 states, Canada and The Bahamas. In 2025, aggregates generated 88% of the Company’s total reportable segment gross profit. As of December 31, 2025, Martin Marietta also provides other building materials, namely, cement, ready mixed concrete, asphalt and paving services in targeted markets where the Company has a notable aggregates position. The Company’s heavy-side building materials are used in infrastructure, nonresidential and residential construction projects. Aggregates are also used in agricultural, utility and environmental applications and as railroad ballast. The aggregates, cement, ready mixed concrete, asphalt and paving operations are reported collectively as the “Building Materials business”.
The Company also operates a Specialties business (formerly known as the Magnesia Specialties business) with production facilities located in Michigan, Ohio, Nevada, North Carolina, Indiana and Pennsylvania. The Specialties business produces high-purity natural and synthetic magnesia-based products, including magnesium sulfate, magnesium oxide and magnesium hydroxide, that are used in environmental, industrial, agricultural, construction, consumer and specialty applications. The Specialties business also produces dolomitic lime, which is sold primarily to external customers for use in steel production and soil stabilization, and is also used internally as a raw material input in synthetic magnesia production. Specialties’ products are shipped to customers domestically and worldwide.
Revenue and profit, by fiscal year.
| Fiscal year | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Revenue | $4.7B | $5.4B | $6.2B | $5.9B | $5.7B | $6.2B |
| Net income | $721.0M | $702.5M | $867.0M | $1.2B | $2.0B | $1.1B |
| Free cash flow | $690.4M | $714.6M | $509.0M | $878.0M | $604.0M | $978.0M |
More on MLM.
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Figures from Martin Marietta Materials Inc's filings with the U.S. SEC, standardised automatically; prices are end-of-day closes. Not financial advice.