Investor Presentation - January 2019

FOCUSING ON OPERATIONAL EXCELLENCE Martin Marietta PURSUING PRICING OPPORTUNITIES Aggregates average selling price¹ UP $5.90 PER TON SINCE 2005 (5% compound annual growth rate) OPTIMIZING COST PROFILE 999 Aggregates gross profit per ton nearly DOUBLES ON ~40% LESS VOLUME increasing from $1.92 in 2005 to $3.82 in 2017 Note: 2005 represents peak of prior construction cycle 1 Selling price is established locally at the point of sale and is subject to specific factors at each locality. Pricing reflects the average of Martin Marietta's selling price across all regions. Local prices can vary significantly from this average. Investor Presentation - January 2019 19 19

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