Delivering Record Performance Through Operational Excellence

MACROECONOMIC DRIVERS SUPPORT CONTINUED EXPANSION OF CONSTRUCTION CYCLE TOP 10 STATES * MID-CYCLE AGGREGATES DEMAND TEXAS COLORADO NORTH CAROLINA GEORGIA IOWA * Martin Marietta's top 10 sales-generating states based on 2018 Building Materials product revenues by state of destination Martin Marietta POPULATION GROWTH 2017 - 2040 FISCAL HEALTH 44% 20% below At mid-cycle 20% above 10% below 10% above AAA 40% AA 20% below At mid-cycle 20% above 10% below 10% above 22% AAA 20% below At mid-cycle 20% above 10% below 10% above 23% AAA 20% below At mid-cycle 20% above 10% below 10% above 20% below At mid-cycle 20% above 10% below 10% above Management calculation based on aggregates consumption per capita multiplied by estimated state population 9% AAA Sources: U.S. Bureau, Population Division (December 2017) and Weldon Cooper Center for Public Service (May 2016) U.S. State Ratings and Outlooks August 13, 2018 Source: S&P Global 32

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