Investor Presentation - January 2019

STRATEGICALLY POSITIONING THE BUSINESS IN ATTRACTIVE GEOGRAPHIES Martin Marietta MARTIN MARIETTA HAS A #1 OR #2 POSITION IN 90% OF THE MARKETS IN WHICH WE OPERATE; UP FROM 65% IN 2009 Northern California Cascadia Front Range Southern California Arizona Sun Corridor Martin Marietta Building Materials business locations Megaregions, as defined by America 2050 Investor Presentation - January 2019 Texas Triangle Great Lakes Northeast Piedmont Atlantic Florida Gulf Coast SIGNIFICANT STRATEGIC PRESENCE IN 6 OF 11 MEGAREGIONS Majority of the nation's population and economic growth through 2050 will occur in 11 megaregions, defined as large networks of metropolitan population centers covering thousands of square miles 15

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