Martin Marietta Materials, Inc.

Martin Marietta Materials, Inc.

MLM

$499.34

Updated: 23/09/2026, 03:32:57

Market Cap
$29.99B
Sector
Basic Materials
Industry
Construction Materials
Country
US
Stock valuation chart
One-year closing share-price history for MLM
Company Profile

Martin Marietta Materials, Inc. functions as a company specializing in natural resource-derived building materials. This enterprise delivers a wide range of aggregates and other heavy construction components to the building industry, serving both domestic and international markets. Its product portfolio includes foundational raw materials like crushed stone, sand, and gravel, in addition to manufactured items such as ready-mix concrete, asphalt, and comprehensive paving solutions. These offerings are essential for infrastructure projects, commercial and residential developments, and various other sectors including railroads, agriculture, utilities, and environmental applications. Beyond its core construction offerings, Martin Marietta also produces magnesia-based chemicals, which are utilized in industrial, agricultural, and environmental contexts. The company further supplies dolomitic lime, primarily for steel manufacturing and soil stabilization. Its broader chemical products contribute to areas such as flame retardants, wastewater treatment, and pulp and paper production, among other environmental uses. Established in 1939, the firm's main office is situated in Raleigh, North Carolina.

USD
NYSE
CEO: C. Howard Nye
Employees: 9,600
https://www.martinmarietta.com
Asset Summaries
Latest generated summaries for MLM

No summaries found.

Detailed business
Evidence-backed facts extracted from the latest official annual filing.
MLM-10-k-fy2025.html7.1 MBtext/htmlENFiled 19/02/2026Period ended 31/12/2025

Business monitoring

Reported and calculated KPIs plus operational exposure disclosed in the FY 2025 filing.

Evidence-backed · 65 KPI observations

Revenue

6.2B

FY 2025 · Reported

Net income

1.1B

FY 2025 · Reported

Gross margin

30.7%

FY 2025 · Calculated

Free cash flow

1.0B

FY 2025 · Calculated

R&D intensity

N/A

FY — · Reported

Share repurchases

0.5B

FY 2025 · Reported

Earnings and cash generation
USD billions, directly sourced from inline XBRL; free cash flow is operating cash flow less capex.
Profitability and reinvestment
Margins and R&D as a percentage of revenue.
Top products and services
Products and services mentioned in the filing; a quantitative sales breakdown was not disclosed.

Other offerings mentioned without separate sales

Specialties business products
Cement operations (held for sale)
Aggregates as primary business

Area-level product sales are displayed only when the filing reports a product × geography breakdown. Regional totals are not allocated across products by estimation.

Geographic footprint
What the filing identifies, separated by location role so partner manufacturing is not presented as Apple-owned factories.
1 named headquarters
0 manufacturing countries
0 individually named factories

Map layer

Pins show disclosed operations. The heatmap colors the filing’s reported geographies; regional figures shade the region and are not estimates for each country.

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Named headquarters Manufacturing partner country

Only locations and quantities explicitly supported by the filing are displayed. A country-level manufacturing percentage or product allocation is shown only when the source discloses it; materiality scores are never presented as production shares.

How the business makes money

Company overview

Natural resource-based building materials company; aggregates network of ~400 sites in 28 states, Canada, Bahamas; aggregates = 88% of 2025 segment gross profit

99%
Source evidence
“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”

Reportable segments

East Group, West Group, and Specialties segments

98%
Source evidence
“two reportable segments, organized by geography: the East Group and the West Group. The East Group provides aggregates and asphalt products. The West Group provides aggregates, ready mixed concrete, asphalt and paving services”

Building Materials segment dominance

Building Materials generated the majority of consolidated revenues and earnings from continuing operations

97%
Source evidence
“The Company’s Building Materials business generated the majority of consolidated revenues and earnings from continuing operations.”

Business segments

Building Materials business and Specialties business

95%
Source evidence
“the Specialties business or Building Materials business”

Aggregates end-use mix

37% of 2025 aggregates shipments to highway/public infrastructure; balance mostly private nonresidential and residential construction

97%
Source evidence
“37% of its 2025 aggregates shipments sold to customers for use in highway and other public infrastructure projects”

Aggregates distribution network

89 distribution yards; rail serves Texas/Southeast/Gulf Coast, ships serve East/Gulf Coasts

95%
Source evidence
“the Company’s aggregates distribution facilities consisted of 89 distribution yards”

Specialties business products

Magnesia-based products and dolomitic lime; dolomitic lime sold primarily for steel production

97%
Source evidence
“produces high-purity natural and synthetic magnesia-based products, including magnesium sulfate, magnesium oxide and magnesium hydroxide”

Cement operations (held for sale)

Midlothian, TX cement plant: ~2.4M tons clinker capacity, 61% utilization in 2025; held for sale under pending QUIKRETE deal

95%
Source evidence
“annual clinker (an intermediary product of cement production) capacity at December 31, 2025 of approximately 2.4 million tons. The facility operated at approximately 61% utilization for clinker production in 2025”

Aggregates as primary business

Aggregates are the primary business; most aggregates and cement products sold to the construction industry

95%
Source evidence
“We sell most of our aggregates (our primary business) and our cement products to the construction industry”

Top-ten state concentration

Ten largest revenue-generating states = 76% of 2025 Building Materials continuing-ops revenues

97%
Source evidence
“The ten-largest revenue-generating states (Texas, North Carolina, Colorado, California, Georgia, Florida, South Carolina, Arizona, Iowa and Minnesota) accounted for 76% of the Building Materials business’ revenues from continuing operations in 2025”

Consolidated revenues 2023-2025

Revenues: $6,150M (2025), $5,662M (2024), $5,851M (2023)

98%
Source evidence
“Revenues $ 6,150 100 $ 5,662 100 $ 5,851”

Operations and dependencies

Energy input requirements

Requires continued supply of diesel fuel, natural gas, coal, petroleum coke and other energy; prices influenced by geopolitics, trade policy, weather and regulatory changes

95%
Source evidence
“Our businesses require a continued supply of diesel fuel, natural gas, coal, petroleum coke and other energy.”

Specialties business foreign currency risk

Specialties business has FX risk from overseas sales; mitigated by USD-denominated sales but exposed to USD strength

92%
Source evidence
“The business tries to mitigate the short-term effects of currency exchange rates by denominating sales in the U.S. Dollar.”

Positioning and strategy

Premier Magnesia acquisition

Acquired Premier Magnesia (Jul 2025), largest US natural magnesite and Epsom salt producer

96%
Source evidence
“acquired Premier Magnesia, LLC (Premier), a privately-owned producer and distributor of magnesia-based products. Premier is the largest producer of natural magnesite and magnesium sulfate, or Epsom salt, in the United States”

BWI Southeast acquisition

BWI Southeast: 20 aggregates operations for $2.05B cash (Apr 2024)

96%
Source evidence
“the acquisition of 20 active aggregates operations in Alabama, South Carolina, South Florida, Tennessee and Virginia from affiliates of Blue Water Industries LLC (BWI Southeast) for $2.05 billion in cash”

Geographic diversity and multi-modal distribution resilience

Nationwide quarry footprint and multi-modal (rail/water) transport mitigate local supply or transportation disruptions

90%
Source evidence
“because the Company transports aggregates products by various methods, including rail and water, it may be able to mitigate supply or transportation issues in any location caused by severe weather”

Cement competitors mostly large non-U.S. companies

Most domestic cement producers are owned by large non-U.S. companies; differing US/EU carbon metrics could put MLM at competitive disadvantage

85%
Source evidence
“Most domestic cement producers are owned by large non-U.S. companies operating in multiple international markets”

Aggregates demand tied to public highway funding

Aggregates demand, especially infrastructure, historically hurt by federal/state budget challenges and highway funding uncertainty

92%
Source evidence
“Demand for aggregates products, particularly in the infrastructure construction market, has historically been negatively affected by federal and state budget challenges and uncertainty over future highway funding levels.”

South Texas cement divestiture to CRH

Sold South Texas cement business and 20 ready mixed plants to CRH for $2.1B cash; $1.3B pretax gain

96%
Source evidence
“completed the sale of its South Texas cement business and certain of its related ready mixed concrete operations to CRH Americas Materials, Inc., a subsidiary of CRH plc, for $2.1 billion in cash”

Infrastructure Investment and Jobs Act funding

$1.2 trillion IIJ Act provides billions in new infrastructure funding requiring aggregates; clean energy/transit projects may also boost demand

90%
Source evidence
“the $1.2 trillion Infrastructure Investment and Jobs Act (IIJ Act), which was signed into law in November 2021, provides billions of dollars in new funding for roads, bridges and other major infrastructure projects which require aggregates for construction”

Underground aggregates mining leadership

Largest US underground aggregates operator; 13 active underground mines in East Group

96%
Source evidence
“the Company is the largest operator of underground aggregates mines in the United States, with 13 active underground mines located in the East Group”

QUIKRETE asset exchange

Pending QUIKRETE exchange: receive ~20M tons/yr aggregates facilities + cash; divest cement and Texas ready mixed concrete (discontinued operations)

96%
Source evidence
“Martin Marietta would receive aggregates facilities producing approximately 20 million tons annually across Virginia, Missouri, Kansas and Vancouver, British Columbia, and cash proceeds”

Leverage target and SOAR strategy

SOAR framework; leverage ratio target 2.0x–2.5x net debt/EBITDA within ~18 months after debt-financed deals

95%
Source evidence
“a leverage ratio ... within a range of 2.0 times to 2.5 times within a reasonable period of time (typically within 18 months) following the completion of a debt-financed transaction”

Portland Limestone Cement (PLC) rollout

More than 90% of Type I/II cement customers converted to PLC, which has reduced cement product line GHG footprint more than 10%

95%
Source evidence
“The Company has continued its rollout of Portland Limestone Cement (PLC) with more than 90% of its Type I/II customers converted to the PLC product. PLC has reduced the GHG footprint of the Company's cement product line more than 10%.”

Acquisition-driven growth strategy

Company expects to continue pursuing acquisitions and strategic transactions to strengthen locations, expand operations and enter new geographies, possibly using shares as consideration

90%
Source evidence
“We expect to continue to pursue acquisitions, joint ventures, leaseholds, licenses and other strategic transactions to strengthen our existing locations, expand our operations and enter new geographic markets”

Risks, financing, and outlook

2025 scheduled shutdown costs for cement and Specialties

In 2025, cement shutdown costs $23 million; Specialties shutdown costs $8 million; scheduled outages of one to several weeks at least annually

97%
Source evidence
“In 2025, our cement and Specialties operations incurred shutdown costs of $23 million and $8 million, respectively.”

Potential GHG emission regulation cost incidence

GHG limitation costs at cement/Woodville operations would likely be passed to customers; Manistee and Gabbs may absorb extra costs; amount cannot be reasonably predicted

90%
Source evidence
“The Manistee and Gabbs facilities may have to absorb extra costs due to the regulation of GHG emissions to maintain competitive pricing in its markets. The Company cannot reasonably predict the amount of those potential increased costs.”

GHG Reporting Rule applies to Texas cement plant and Woodville, OH and Manistee, MI facilities

Company submitted 2025 GHG Rule annual reports for its Texas cement plant and Specialties facilities in Woodville, Ohio and Manistee, Michigan

93%
Source evidence
“In 2025, the Company submitted annual reports in accordance with the GHG Rule relating to operations at its cement plant in Texas, as well as its Specialties facilities in Woodville, Ohio, and Manistee, Michigan”

Clean Air Act nonattainment areas tied to federal transportation funding

Numerous major Company markets are Clean Air Act nonattainment areas; federal transportation funding is directly tied to compliance, with litigation history delaying highway construction

93%
Source evidence
“Federal transportation funding has been directly tied to compliance with the Clean Air Act.”

GHG/climate regulation exposure at cement and lime plants

Cement/lime operations hold Title V Permits and are subject to Clean Air Act PSD; GHG compliance costs expected to be passed to customers

90%
Source evidence
“the Company anticipates that any increased operating costs or taxes relating to GHG emission limitations at the Woodville lime plant or Midlothian cement plant would be passed on to customers”

Aggregates reserves replacement and permitting risk

Growth depends on acquiring, permitting and developing quality aggregates reserves within an economic haul radius; deposits increasingly difficult to secure near growing markets

95%
Source evidence
“Our ability to sustain and grow the business depends on replacing depleting reserves with quality aggregates deposits that we can mine economically, with appropriate permits, near either growing markets or long-haul transportation corridors”

Equipment failure and catastrophic loss risk

Manufacturing dependent on critical equipment (kilns, finishing mills); catastrophic events may cause production curtailments

95%
Source evidence
“Our manufacturing processes are dependent upon critical pieces of equipment, such as our kilns and finishing mills.”

Weather/climate physical risks by geography

Coastal/Bahamas operations exposed to hurricanes; California to Pacific storms, wildfires, mudslides, drought; elevated precipitation in Texas and Southeast

95%
Source evidence
“the Company’s operations in coastal markets near the Atlantic Ocean and Gulf Coast and in The Bahamas are exposed to hurricanes and tropical storms. The Company also faces risks from Pacific storms”

Capital intensity and funding risk

Requires large cash to operate; supply-chain disruption, inflation, labor availability and logistics constraints drive parts cost volatility

95%
Source evidence
“The property and machinery needed to produce our products are very costly. Therefore, we require large amounts of cash to operate our businesses.”

Paving, asphalt and ready-mixed concrete contract risks

Paving operations face late-completion penalties and fixed-price cost-overrun risk; these operations have lower margins than aggregates and cement

93%
Source evidence
“Our ready mixed concrete and asphalt and paving operations typically generate lower profit margins than our aggregates and cement operations due to potentially volatile input costs, highly competitive market dynamics and lower barriers to entry.”

Credit-market stress and financing risk

Credit-market stress could reduce construction demand, slow collections, increase interest cost, reduce covenant flexibility and pressure ratings

93%
Source evidence
“Credit-market stress and tighter financing conditions could reduce construction demand, slow customer payments, constrain our liquidity, and increase our cost of capital.”

Aggregates pricing risk

Aggregates pricing is set locally and sensitive to supply-demand; broad declines could lower margins and increase covenant risk

90%
Source evidence
“Aggregates pricing is set locally and is sensitive to supply-demand conditions within each market”

Investment-grade rating constraint on large acquisitions

A large strategic acquisition could require issuing equity and debt to maintain investment-grade rating and may still cause downgrade

90%
Source evidence
“It is possible a large strategic acquisition would require that we issue new equity and debt securities in order to maintain our investment-grade credit rating”

Credit ratings affect financing access

Higher leverage could hurt credit ratings; lower ratings could limit financing access and increase cost of capital

90%
Source evidence
“Further, an increase in leverage could lead to deterioration in our credit ratings. A reduction in our credit ratings, regardless of the cause, could also limit our ability to obtain additional financing and/or increase our cost of obtaining financing.”

Non-U.S. compliance exposure

Subject to non-U.S. anticorruption, antibribery, trade compliance, antitrust and money-laundering laws; violations could bring fines and penalties

88%
Source evidence
“ome non-U.S. laws, regulations and policies, including laws related to anticorruption, antibribery, export and import compliance, antitrust and money laundering, due to our operations.”

Accounting estimates subjectivity

Critical accounting estimates involve subjective judgments; PCAOB inspection requirements may increase audit response costs

85%
Source evidence
“Reports from the Public Company Accounting Oversight Board’s (PCAOB) inspections of public accounting firms continue to outline findings and recommendations that could require these firms to perform additional work”

Material exposure graph

Construction industry
Demand Driver

Most aggregates and cement products are sold to the construction industry; results depend on its strength and cyclicality.

Relevance 95·Dependency 90·Confidence 95
Source evidence
“We sell most of our aggregates (our primary business) and our cement products to the construction industry and, therefore, our results depend on that industry’s strength”
Construction marketplace / economic cycles
Demand Driver

Operating results are highly dependent on construction marketplace activity and public/private sector economic cycles, making results cyclical.

Relevance 95·Dependency 90·Confidence 95
Source evidence
“the Company’s operating results are highly dependent upon activity within the construction marketplace, economic cycles within the public and private business sectors, and seasonal and other weather-related conditions”
Aggregates reserves
Raw Material Dependency

Sustaining and growing the Building Materials business depends on replacing depleting aggregates reserves within economic haul radius and obtaining permits.

Relevance 90·Dependency 85·Confidence 95
Source evidence
“Our Building Materials business depends on identifying, acquiring, permitting and developing quality aggregates reserves within an economic haul radius”
Public infrastructure construction customers
Customer Exposure

37% of 2025 aggregates shipments went to highway and other public infrastructure projects; public funding is the largest end-use market and dampens private-construction cyclicality.

Relevance 90·Dependency 37·Confidence 95
Source evidence
“37% of its 2025 aggregates shipments sold to customers for use in highway and other public infrastructure projects”
Public infrastructure funding (IIJ Act)
Demand Driver

Federal infrastructure funding drives aggregates demand for roads, bridges and infrastructure projects.

Relevance 85·Dependency 75·Confidence 90
Source evidence
“provides billions of dollars in new funding for roads, bridges and other major infrastructure projects which require aggregates for construction”
Federal and state highway funding
Demand Driver

Aggregates demand, particularly infrastructure construction, historically negatively affected by budget challenges and highway funding uncertainty.

Relevance 85·Dependency 70·Confidence 92
Source evidence
“Demand for aggregates products, particularly in the infrastructure construction market, has historically been negatively affected by federal and state budget challenges and uncertainty over future highway funding levels.”
Texas
Revenue Exposure

Texas is among the top ten revenue-generating states; local construction spending and energy-sector cyclicality materially affect results.

Relevance 85·Dependency 70·Confidence 90
Source evidence
“particularly in our Building Materials business’ top ten revenue-generating states of Texas, North Carolina, Colorado, California, Georgia, Florida, South Carolina, Arizona, Iowa and Minnesota”
Public infrastructure funding
Demand Driver

Profitability is sensitive to fluctuations in public-sector infrastructure funding; state financial health (S&P AA- or higher for top-ten states) guides expansion.

Relevance 85·Dependency 37·Confidence 92
Source evidence
“affected by fluctuations in public-sector infrastructure funding; interest rates; access to capital markets; and demographic, geographic, employment and population dynamics”
Natural gas
Raw Material Dependency

Businesses require continued supply of natural gas; price volatility or shortages raise costs and can disrupt operations.

Relevance 80·Dependency 75·Confidence 95
Source evidence
“Our businesses require a continued supply of diesel fuel, natural gas, coal, petroleum coke and other energy.”
Diesel fuel (petroleum-based)
Raw Material Dependency

Diesel fuel is a required energy input; prices influenced by global supply-demand, refining capacity and logistics constraints.

Relevance 80·Dependency 75·Confidence 90
Source evidence
“Our businesses require a continued supply of diesel fuel, natural gas, coal, petroleum coke and other energy.”
Interest rates and credit conditions
Demand Driver

Elevated interest rates, inflation and tightening credit can delay, downsize, or cancel construction projects, reducing materials demand.

Relevance 80·Dependency 70·Confidence 90
Source evidence
“could occur if companies and consumers are unable to obtain financing for construction projects or if consumer confidence continues to be eroded or affected by economic uncertainty”
Population growth and megaregions
Demand Driver

Company targets geographies near US megaregions; population growth/density drive heavy-side building materials consumption; presence in ten of 11 megaregions.

Relevance 80·Dependency 50·Confidence 90
Source evidence
“The Company has a meaningful presence in ten megaregions”
Weather and climate conditions
Cost Driver

Outdoor heavy-side operations are affected by precipitation, flooding, hurricanes, snowstorms, extreme temperatures, wildfires, earthquakes and droughts; Q1/Q4 winter weather, Q2/Q3 heavy precipitation and heat.

Relevance 75·Dependency 60·Confidence 93
Source evidence
“weather patterns, seasonal changes and other climate-related conditions ... can significantly affect production schedules, shipments, costs, efficiencies and profitability”
Clean Air Act
Regulatory Exposure

Federal transportation funding is tied to Clean Air Act compliance, and nonattainment designations cover many major Company markets, creating risk of delayed highway construction that drives aggregates demand.

Relevance 75·Dependency 60·Confidence 90
Source evidence
“Environmental groups have successfully challenged federal and certain state transportation departments under the Act, delaying highway construction in municipalities that are not in compliance.”
Inflation
Cost Driver

Prices and lead times for parts and contractor services can be volatile due to inflation, supply-chain disruptions and labor availability.

Relevance 70·Dependency 60·Confidence 92
Source evidence
“Prices and lead times for parts and contractor services can be volatile due to supply-chain disruptions, limited supplier alternatives, inflation, labor availability, and logistics constraints.”
Railroad carriers
Supplier Dependency

Rail-based distribution increases dependence on railroad performance (track congestion, crew/railcar/locomotive availability, shipping contract negotiations).

Relevance 70·Dependency 55·Confidence 92
Source evidence
“increases the Company’s dependence on and exposure to railroad performance, including track congestion, crew availability, railcar availability, locomotive availability”
U.S. Clean Air Act / GHG regulation
Cost Driver

Title V and PSD permitting plus potential GHG limitations could raise operating costs at cement and lime plants; company expects to pass costs to customers.

Relevance 70·Dependency 55·Confidence 90
Source evidence
“If future modifications to the Company's facilities require PSD review for other pollutants, GHG permitting requirements may be triggered and may require significant additional costs, which the Company would expect to be passed on to customers”
Interest rates and capital markets
Competitive Exposure

Construction cyclicality driven by interest rates and access to capital markets affects Building Materials profitability.

Relevance 70·Dependency 50·Confidence 90
Source evidence
“cyclical swings in construction spending, which are affected by fluctuations in levels of public-sector infrastructure funding; interest rates; access to capital markets”
Supply chain disruption
Cost Driver

Supply-chain disruptions drive volatile parts prices and lead times, increasing repair and maintenance costs and capex risk.

Relevance 65·Dependency 60·Confidence 92
Source evidence
“Prices and lead times for parts and contractor services can be volatile due to supply-chain disruptions, limited supplier alternatives, inflation, labor availability, and logistics constraints.”
California
Revenue Exposure

California operations face wildfire, mudslide and drought water-restriction risks that can impact production; also a top-ten revenue state.

Relevance 65·Dependency 55·Confidence 90
Source evidence
“our California operations face risks from Pacific storms, wildfires, mudslides and water use restrictions during periods of severe drought”
Interest rates and financing conditions
Demand Driver

Construction project delays/cancellations can occur if companies and consumers cannot obtain financing; interest rates are an impairment trigger.

Relevance 65·Dependency 55·Confidence 90
Source evidence
“delays to or cancellations of capital projects in the nonresidential and residential construction markets could occur if companies and consumers are unable to obtain financing for construction projects”
Coal
Commodity Exposure

Coal is a required energy input; availability and pricing influenced by supply-demand dynamics, geopolitics and regulation.

Relevance 65·Dependency 55·Confidence 90
Source evidence
“Our businesses require a continued supply of diesel fuel, natural gas, coal, petroleum coke and other energy.”
USEPA Mandatory Greenhouse Gases Reporting Rule
Regulatory Exposure

Texas cement plant and Woodville, OH and Manistee, MI facilities are GHG reporters; potential future GHG legislation could raise operating costs at these operations.

Relevance 65·Dependency 45·Confidence 90
Source evidence
“Should Congress enact additional legislation limiting GHG emissions, these operations will likely be subject to such legislation.”
Data centers
Demand Driver

Sunbelt transportation-corridor locations attract technology companies building data centers, supporting construction materials demand.

Relevance 60·Dependency 30·Confidence 80
Source evidence
“technology companies view these areas as attractive locations for data centers”
Climate/energy regulation and clean energy projects
Demand Driver

New public transit and clean energy projects addressing climate change may increase demand for products; clinker-substitution standards could alter cement economics.

Relevance 50·Dependency 40·Confidence 80
Source evidence
“New public transit and clean energy projects that address climate change may also result in increased demand for the Company's products”
Full company information
Latest profile, trading, valuation, and identifier data stored for MLM.
Share price
$499.34
Market cap
$29.99B
Exchange
NYSE
Currency
USD
CEO
C. Howard Nye
Employees
9,600
IPO date
17/02/1994
Beta
1.101
Last dividend
$0.00
Day range
$493.79 – $507.36
52-week range
$488.74 – $710.97
1-day performance
-0.07%
1-year performance
2.17%
Current drawdown (1Y)
-29.77%
CIK
0000916076
CUSIP
573284106
ISIN
US5732841060
Created
07/12/2025, 05:16:38
Last update
23/09/2026, 03:32:57

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