Delivering Record Performance Through Operational Excellence

DISCLAIMER Statement Regarding Safe Harbor for Forward-Looking Statements This presentation may contain forward-looking statements - that is, information related to future, not past, events. Like other businesses, Martin Marietta is subject to risks and uncertainties which could cause its actual results to differ materially from its projections or that could cause forward- looking statements to prove incorrect, including the risks and uncertainties discussed in Martin Marietta's most recent Annual Report on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K, which have been filed with the Securities and Exchange Commission (SEC) and are readily accessible on the SEC's website and the Company's website. Except as legally required, Martin Marietta undertakes no obligation to publicly update or revise any forward- looking statements, whether resulting from new information, future developments or otherwise. Non-GAAP Financial Measures This presentation contains certain financial measures presented on a non-GAAP basis. These non- GAAP financial measures are not in accordance with, nor are they a substitute for, GAAP measures. Reconciliations of non-GAAP financial measures to the most directly comparable GAAP financial measures are provided in the Appendix to this presentation. Investor Presentation A Martin Marietta 2

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