Delivering Record Performance Through Operational Excellence

MACROECONOMIC DRIVERS SUPPORT CONTINUED EXPANSION OF CONSTRUCTION CYCLE TOP 10 STATES * FLORIDA MID-CYCLE AGGREGATES DEMAND Martin Marietta POPULATION GROWTH 2017 - 2040 FISCAL HEALTH 35% 20% below At mid-cycle 20% above 10% below 10% above AAA SOUTH CAROLINA 25% AA+ 20% below At mid-cycle 20% above 10% below 10% above INDIANA 20% below At mid-cycle 20% above 7% AAA 10% below 10% above MARYLAND 20% below 17% At mid-cycle 20% above AAA 10% below 10% above NEBRASKA * Martin Marietta's top 10 sales-generating states based on 2018 Building Materials product revenues by state of destination 20% below At mid-cycle 20% above 10% below 10% above Management calculation based on aggregates consumption per capita multiplied by estimated state population 15% 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 33

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