Investor Presentation - January 2019

WHY INVEST IN MARTIN MARIETTA? ?? Leading U.S. natural resource-based building materials company with OVER 100 YEARS of high-quality aggregates reserves Disciplined execution of a SOLID LONG-TERM STRATEGIC PLAN 용용 INDUSTRY-LEADING 000 safety, environmental and financial performance and operational excellence Investor Presentation - January 2019 (+) Steadfast commitment to CORE VALUES STRATEGICALLY POSITIONED in high-growth markets with attractive underlying fundamentals Capital allocation priorities to MAXIMIZE LONG-TERM SHAREHOLDER VALUE дд EXPERIENCED executive and local management teams 3

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