Slides
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Q3 2026 SUPPLEMENTAL INFORMATION* November 4, 2026 * All information provided in these slides is qualified in its entirety by reference to the Company's filings with the Securities and Exchange Commission (SEC), which are available on both the Company’s and the SEC’s websites
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Statement Regarding Safe Harbor for Forward-Looking Statements This material contains forward-looking statements under the federal securities laws, including the Private Securities Litigation Reform Act of 1995, that involve risks and uncertainties and are based on assumptions that the Company believes are reasonable, but which may differ materially from actual results. These statements reflect the Company’s current expectations or forecasts of future events. You can identify these statements because they do not relate only to historical or current facts and may use words such as “guidance,” “anticipate,” “may,” “expect,” “could,” “should,” “believe,” “estimate,” “forecast,” “intend,” “outlook,” “plan,” “project,” “schedule,” “will,” and other words of similar meaning in connection with future events or future performance. Any or all of the Company’s forward-looking statements herein and in other publications may prove to be incorrect. Non-GAAP Financial Measures This material contains financial measures that are not prepared in accordance with United States generally accepted accounting principles (GAAP). The Appendix contains reconciliations of these non-GAAP financial measures to the most directly comparable GAAP measures, unless otherwise noted. Management believes these non-GAAP measures are commonly used by investors to evaluate the Company’s performance and, when read in conjunction with the Company’s consolidated financial statements, present a useful tool to evaluate the Company’s ongoing business performance from period to period and anticipated performance. Additionally, these are some of the factors the Company uses in internal evaluations of the overall performance of its businesses. Management acknowledges that many factors impact reported results, and the adjustments in these non-GAAP measures do not account for all such factors. Furthermore, these non-GAAP measures may not be comparable to similarly titled measures used by other companies. Results and Trends Results and trends described in this Supplemental Information may not necessarily be indicative of the Company’s future performance. Q3 2026 Supplemental Information 2
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Q3 2026 Supplemental Information 3 Q3 2026 CONTINUING OPERATIONS HIGHLIGHTS 1. Revenues include the sales of products and services to customers (net of any discounts or allowances) and freight revenues for continuing operations 2. Non-GAAP financial measures; see Appendix for reconciliation to most directly comparable GAAP measure. All-Time Quarter Records: ✓ Revenues1 (+28%) ✓ Adjusted EBITDA from Continuing Operations2 (+21%) ✓ Aggregates Revenues1 (+14%) ✓ Aggregates Shipment Tons (+16%) ✓ Aggregates Cash Gross Profit2 (+6%) Portfolio Optimization: ✓ August 21: Completed the combination with Lhoist North America, Inc. (LNA) ✓ September 18: Completed the acquisition of The Frazier Quarry, Inc. $808M Adjusted EBITDA from Continuing Operations2 +21% y-o-y $2.37B Revenues1 +28% y-o-y 67.1M Aggregates Shipment Tons +16% y-o-y $696M Aggregates Cash Gross Profit2 +6% y-o-y
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Q3 2026 Supplemental Information 4 2026 CONTINUING OPERATIONS GUIDANCE SUMMARY AND 2027 PRELIMINARY OUTLOOK $7.80B Midpoint Updated 2026 Revenue Guidance $2.48B Midpoint Updated 2026 Adjusted EBITDA from Continuing Operations1 Guidance 1. Adjusted EBITDA from Continuing Operations is a Non-GAAP financial measure; see Appendix for reconciliation to most directly comparable GAAP measure. Preliminary 2027 Aggregates Pricing Outlook Mid-Single to High-Single Digits (on a mix-adjusted basis)
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Q3 2026 Supplemental Information 5 AGGREGATES CASH GROSS PROFIT1 1. Non-GAAP financial measures; see Appendix for reconciliation to most directly comparable GAAP measure. 2. Represents the period over period difference in Organic Aggregates Cash Gross Profit; excludes the impact of acquisitions and divestitures completed within the preceding 12 months. See Slide 15 for more information. 36.5% of revenues 45.0% of revenues 42.2% of revenues 42.5% of revenues Nine Months Ended September 30, 2026Three Months Ended September 30, 2026 $655M $696M -$25M $66M $1,619M $1,772M $8M $145M Q3 2025 Aggregates Cash Gross Profit1 Change in Organic2 Aggregates Cash Gross Profit Acquisition Cash Gross Profit Contribution Q3 2026 Aggregates Cash Gross Profit1 Sep-25 YTD Aggregates Cash Gross Profit1 Change in Organic2 Aggregates Cash Gross Profit Acquisition Cash Gross Profit Contribution Sep-26 YTD Aggregates Cash Gross Profit1 45% of revenues 42% of revenues 42% of revenues 43% of revenues 41% of revenues 41% of revenues
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Q3 2026 Supplemental Information 6 SPECIALTIES CASH GROSS PROFIT1 1. Non-GAAP financial measures; see Appendix for reconciliation to most directly comparable GAAP measure. 2. Represents the period over period difference in Specialties Cash Gross Profit Excluding LNA; See Slide 16 for more information. $47M $163M $1M $115M Q3 2025 Specialties Cash Gross Profit1 Change in Specialties Cash Gross Profit Excluding LNA2 LNA Cash Gross Profit Contribution Q3 2026 Specialties Cash Gross Profit1 36% of revenues 45% of revenues $279M $131M $33M $115M Sep-25 YTD Specialties Cash Gross Profit1 Change in Specialties Cash Gross Profit Excluding LNA2 LNA Cash Gross Profit Contribution Sep-26 YTD Specialties Cash Gross Profit1 42% of revenues 43% of revenues Nine Months Ended September 30, 2026Three Months Ended September 30, 2026
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Q3 2026 Supplemental Information 7 LNA COMBINATION EXPANDS THE VALUE OF OUR COMBINED LIMESTONE RESERVE BASE Complementary capabilities maximize limestone utilization, broaden product offerings and diversify end markets Milling & Grinding Crushing & Screening Calcination Processing and Products End Market Applications Pulp & PaperSteel Non- Ferrous Metals Flue Gas Treatment Water Treatment AgricultureBuilding Highways & Mega Projects INFRASTRUCTURE INDUSTRIAL PROCESSES ENVIRONMENT & AGRICULTURE Aggregates Ground Calcium Carbonate (GCC) Lime Products MLM CORE CAPABILITIES LNA COMPLEMENTARY CAPABILITIES Aggregates Lime & Minerals Limestone Reserve of Martin Marietta’s hard rock reserves1 are limestone+50% 1. Represents limestone as a percentage of Martin Marietta’s hard rock reserves, including LNA
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END MARKET OUTLOOK Q3 2026 Supplemental Information 8
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Q3 2026 Supplemental Information 9Source: ARTBA, U.S. Census Bureau, Dodge Construction Network and Bloom Energy END MARKET OUTLOOK ▪ Significant IIJA funding remains available, providing a multi-year runway for infrastructure investment ▪ Strategically positioned in states with historically elevated state Department of Transportation budgets, with >60% state funded Durable infrastructure foundation and data center strength insulate near-term private construction cyclicality INFRASTRUCTURE ▪ While near-term affordability constraints persist, MLM is strategically positioned in attractive markets benefiting from favorable demographic and migration trends ▪ 60% of the U.S. population, and over 80% of projected population growth through 2050, is located within 60 miles of a Martin Marietta facility RESIDENTIAL ▪ Heavy nonresidential construction across the Company’s footprint supported by multi-year investment in data centers, power generation and warehouses ▪ Expect continued weakness in light nonresidential markets due to higher-for-longer interest rates NONRESIDENTIAL MLM Operations 60% 40% ~$350B Infrastructure Investment and Jobs Act (IIJA) Cumulative State Reimbursements Remaining Funding to be Invested Texas Poised to Lead U.S. Data Center Growth of projected U.S. data center capacity by 2028 ~30%
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APPENDIX Q3 2026 Supplemental Information 10
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Q3 2026 Supplemental Information 11 ADJUSTED EBITDA FROM CONTINUING OPERATIONS Earnings from continuing operations before interest; income taxes; depreciation, depletion and amortization; earnings/loss from nonconsolidated equity affiliates; acquisition, divestiture and integration expenses; the impact of selling acquired inventory after its markup to fair value as part of acquisition accounting (the Inventory Markup); and an asset and portfolio rationalization charge, or Adjusted EBITDA from continuing operations, is an indicator used by the Company and investors to evaluate the Company's operating performance from period to period. The Company has elected to add back, for purposes of its Adjusted EBITDA from continuing operations calculation, acquisition, divestiture and integration expenses and the Inventory Markup only for transactions with consideration of at least $2.0 billion for the Building Materials business or $200 million for the Specialties business. Adjusted EBITDA from continuing operations is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to net earnings attributable to Martin Marietta, earnings from operations or operating cash flow. $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Net earnings from continuing operations attributable to Martin Marietta $256 $361 Add back: Interest expense, net of interest income 132 56 Income tax expense for controlling interests 57 89 Depreciation, depletion and amortization expense and earnings/loss from nonconsolidated equity affiliates 242 149 Acquisition, divestiture and integration expenses 82 7 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 38 5 Asset and portfolio rationalization charge 1 – Adjusted EBITDA from continuing operations $808 $667 Revenues from continuing operations $2,369 $1,846 Adjusted EBITDA from continuing operations margin 34% 36%
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Q3 2026 Supplemental Information 12 FULL-YEAR 2026 ADJUSTED EBITDA FROM CONTINUING OPERATIONS GUIDANCE Earnings from continuing operations before interest; income taxes; depreciation, depletion and amortization; earnings/loss from nonconsolidated equity affiliates; acquisition, divestiture and integration expenses; the impact of selling acquired inventory after its markup to fair value as part of acquisition accounting (the Inventory Markup); and an asset and portfolio rationalization charge, or Adjusted EBITDA from continuing operations, is an indicator used by the Company and investors to evaluate the Company's operating performance from period to period. The Company has elected to add back, for purposes of its Adjusted EBITDA from continuing operations calculation, acquisition, divestiture and integration expenses and the Inventory Markup only for transactions with consideration of at least $2.0 billion for the Building Materials business or $200 million for the Specialties business. Adjusted EBITDA from continuing operations is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to net earnings attributable to Martin Marietta, earnings from operations or operating cash flow. $ in Millions Year Ended Dec 31, 2026 (Midpoint Guidance) 1 Net earnings from continuing operations attributable to Martin Marietta $800 Add back: Interest expense, net of interest income 403 Income tax expense for controlling interests 203 Depreciation, depletion and amortization expense and earnings/loss from nonconsolidated equity affiliates 864 Acquisition, divestiture and integration expenses 96 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 105 Asset and portfolio rationalization charge 4 Adjusted EBITDA from continuing operations guidance $2,475 Revenues from continuing operations $7,800 Adjusted EBITDA from continuing operations margin 32% 1. 2026 Guidance reflects the midpoint of the ranges provided in the Q3 2026 earnings release
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Q3 2026 Supplemental Information 13 FREE CASH FLOW Free cash flow is a non-GAAP financial measure used by the Company and by investors to assess the Company’s ability to generate cash from operations after capital expenditures and its capacity to fund strategic capital allocation priorities. The Company calculates free cash flow by subtracting capital expenditures from net cash provided by operating activities. Free cash flow is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to net cash provided by operating activities, the most directly comparable GAAP financial measure. $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Net cash provided by operating activities $557 $551 Less: Capital expenditures (131) (190) Free cash flow $426 $361
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Q3 2026 Supplemental Information 14 AGGREGATES CASH GROSS PROFIT Aggregates cash gross profit is a non-GAAP financial measure used by the Company and by investors to evaluate operating performance and enhance comparability across reporting periods. The Company calculates cash gross profit by adding back noncash charges for depreciation, depletion and amortization and the impact of selling acquired inventory after markup to fair value as part of acquisition accounting. Aggregates cash gross profit is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to gross profit, the most directly comparable GAAP financial measure. $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Nine Months Ended Sep 30, 2026 Nine Months Ended Sep 30, 2025 Aggregates gross profit $512 $531 $1,217 $1,257 Add back: Depreciation, depletion and amortization expense 179 124 477 361 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 5 – 78 1 Aggregates cash gross profit $696 $655 $1,772 $1,619 Aggregates revenues $1,662 $1,458 $4,337 $3,780 Aggregates cash gross margin 42% 45% 41% 43%
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Q3 2026 Supplemental Information 15 ORGANIC AND ACQUISITION AGGREGATES CASH GROSS PROFIT Organic aggregates cash gross profit is a non-GAAP financial measure used by the Company and by investors to evaluate operating performance and enhance comparability across reporting periods. The Company calculates organic aggregates cash gross profit by adding back noncash charges for depreciation, depletion and amortization and the impact of selling acquired inventory after markup to fair value as part of acquisition accounting and excluding the impact of acquisitions and divestitures completed within the preceding 12 months. Organic aggregates cash gross profit is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to gross profit, the most directly comparable GAAP financial measure. Acquisitions aggregates cash gross profit is a non- GAAP financial measure used by the Company and by investors to evaluate operating performance and enhance comparability across reporting periods. The Company calculates acquisitions aggregates cash gross profit by adding back noncash charges for depreciation, depletion and amortization and the impact of selling acquired inventory after markup to fair value as part of acquisition accounting. Acquisitions aggregates cash gross profit is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to acquisitions aggregates gross profit (loss), the most directly comparable GAAP financial measure. Change in organic aggregates cash gross profit is calculated by taking the period over period difference in organic aggregates cash gross profit (i.e., the difference between $655 million for the three months ended September 30, 2025, and $630 million for the three months ended September 30, 2026, or $25 million). $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Nine Months Ended Sep 30, 2026 Nine Months Ended Sep 30, 2025 Organic aggregates gross profit $499 $531 $1,250 $1,257 Add back: Organic aggregates depreciation, depletion and amortization expense 131 124 377 361 Organic aggregates impact of selling acquired inventory after markup to fair value as part of acquisition accounting – – – 1 Organic aggregates cash gross profit $630 $655 $1,627 $1,619 $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Nine Months Ended Sep 30, 2026 Nine Months Ended Sep 30, 2025 Acquisitions aggregates gross profit (loss) $13 $ – ($33) $ – Add back: Acquisitions aggregates depreciation, depletion and amortization expense 48 – 100 – Acquisitions aggregates impact of selling acquired inventory after markup to fair value as part of acquisition accounting 5 – 78 – Acquisitions aggregates cash gross profit $66 $ – $145 $ –
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Q3 2026 Supplemental Information 16 SPECIALTIES CASH GROSS PROFIT AND SPECIALTIES CASH GROSS PROFIT EXCLUDING LNA Specialties cash gross profit is a non-GAAP financial measure used by the Company and by investors to evaluate operating performance and enhance comparability across reporting periods. The Company calculates Specialties cash gross profit by adding back noncash charges for depreciation, depletion and amortization and the impact of selling acquired inventory after markup to fair value as part of acquisition accounting. Specialties cash gross profit excluding LNA is a non- GAAP financial measure used by the Company and by investors to evaluate operating performance and enhance comparability across reporting periods. The Company calculates Specialties cash gross profit excluding LNA by deducting LNA gross profit from Specialties gross profit and adding back noncash charges for depreciation, depletion and amortization and the impact of selling acquired inventory after markup to fair value as part of acquisition accounting, in each case excluding amounts attributable to LNA. Specialties cash gross profit and Specialties gross profit excluding LNA are not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to gross profit or Specialties gross profit, the most directly comparable GAAP financial measures, respectively. Change in Specialties cash gross profit excluding LNA is calculated by taking the period over period difference in Specialties cash gross profit excluding LNA (i.e., the difference between the $47 million for the three months ended September 30, 2025, and $48 million for the three months ended September 30, 2026, or $1 million). $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Nine Months Ended Sep 30, 2026 Nine Months Ended Sep 30, 2025 Specialties gross profit $88 $34 $182 $108 Add back: Depreciation, depletion and amortization expense 37 8 59 18 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 38 5 38 5 Specialties cash gross profit $163 $47 $279 $131 Specialties revenues $362 $131 $656 $309 Specialties cash gross margin 45% 36% 43% 42% $ in Millions Three Months Ended Sep 30, 2026 Three Months Ended Sep 30, 2025 Nine Months Ended Sep 30, 2026 Nine Months Ended Sep 30, 2025 Specialties gross profit $88 $34 $182 $108 Less: LNA gross profit 51 – 51 – Specialties gross profit excluding LNA $37 $34 $131 $108 Add back: Depreciation, depletion and amortization expense excluding LNA 11 8 33 18 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting excluding LNA – 5 – 5 Specialties cash gross profit excluding LNA $48 $47 $164 $131
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Q3 2026 Supplemental Information 17 LNA CASH GROSS PROFIT LNA cash gross profit for the period August 21, 2026, through September 30, 2026, is a non-GAAP financial measure presented to enable the Company and investors to evaluate LNA’s contribution to Specialties operating performance and enhance comparability of Specialties cash gross profit with and without LNA. The Company calculates LNA cash gross profit by adding back LNA noncash charges for depreciation, depletion and amortization and the impact of selling acquired inventory after markup to fair value as part of acquisition accounting. LNA cash gross profit is not defined by accounting principles generally accepted in the United States (GAAP) and, as such, should not be construed as an alternative to gross profit, the most directly comparable GAAP financial measure. $ in Millions Period from Aug 21, to Sep 30, 2026 LNA gross profit $51 Add back: LNA depreciation, depletion and amortization expense 26 LNA impact of selling acquired inventory after markup to fair value as part of acquisition accounting 38 LNA cash gross profit $115