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November 3, 2026 2026 Earnings Presentation Q3
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Forward-Looking Statements CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS The information in this presentation highlights the key growth strategies, projections and certain assumptions for the company and its subsidiaries. Many of these highlighted statements and other statements not historical in nature are “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements are generally identified with words like “believe,” “expect,” “target,” “project,” “may,” “could,” “would,” “approximately,” “possible,” “will,” “should,” “intend,” “plan,” “anticipate,” “commit,” "confident," “estimate,” “potential,” “ambitions,” “outlook,” or “continue,” the negative of these words, other terms of similar meaning or the use of future dates. Although the company believes that its expectations are expressed in good faith and based on reasonable assumptions, there is no assurance the company’s statements with respect to its EDGE and Sharper EDGE initiatives and the benefits thereof, our ability to drive long-term profitable growth, shareholder value creation, financial guidance, near-term market dynamics, expected long-term goals, expected backlog margin, acquisitions, financing plans, expected federal and state funding for infrastructure or other proposed strategies will be achieved. New factors emerge from time to time, and it is not possible for management to predict all the factors, nor can it assess the effect of each factor on the company's business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statement. All forward-looking statements, whether written or oral and whether made by or on behalf of the company, are expressly qualified by the risk factors and cautionary statements reported in the section entitled “Item 1A. Risk Factors” in Part I of the company's 2025 Annual Report on Form 10-K, filed with the United States Securities and Exchange Commission (the “SEC”) on February 20, 2026, and subsequent filings with the SEC. All forward-looking statements in this presentation are expressly qualified by such cautionary statements and by reference to the underlying assumptions. Undue reliance should not be placed on forward-looking statements, which speak only as of the date they are made. Except as required by law, the company does not undertake to update forward-looking statements, whether as a result of new information, future events or otherwise.
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1 See Appendix for reconciliation of this non-GAAP financial measure to the most directly comparable GAAP financial measure. Strong Aggregates Performance; Announced Sharper EDGE Initiatives Financial Highlights Operational Highlights Taking action on near-term headwinds: Q3 2026 Highlights Announced Sharper EDGE: 3 $273M $272M 22.7% 21.3% Revenue Adjusted EBITDA1 Adjusted EBITDA Margin1 $1,204M $1,276M 2025 2026 2025 2026 2025 2026 6% Flat +290bps(140)bps Strong aggregates performance supported by EDGE initiatives: • 10% higher volumes • Record Q3 aggregates gross margin of 29.6% • Average selling price increased 4.3% • Expanding private work; right-sizing crews; growing third-party sales • Focused on operational, commercial and organizational excellence
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Q3 2026 Performance: Aggregates EDGE Initiatives Provide Blueprint for Measurable Improvements • Targeted more external sales • More asphalt paving • Enhanced quoting tools • Dynamic pricing Volume (in millions of tons) +10% Y/Y Average Sales Price Variable Production CostsGross Margin (Record) +240 bps Y/Y • PIT Crews identified ongoing opportunity to reduce variable production costs • 4% improvement in plant run time percentage Commercial Operational (5%) Y/Y 11.6 12.7 3Q25 3Q26 4 27.2% 29.6% 3Q25 3Q26 1 4.3% year-over-year on an as-reported basis. +5.9% Y/Y, product mix-adjusted1 530-basis-point improvement in aggregate gross margin FY 2022 vs LTM 9/30/26
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Q3 2026 Headwinds and Actions Taking Strategic Actions to Help Manage Short-Term Headwinds Short-Term Headwinds Actions We Are Taking • Expanding private work • Right-sizing crews and equipment • Growing third-party sales • Bidding as both general and subcontractor • Accelerating other available work • Redeploying crews to active projects • Managing labor costs to protect margins • Fuel surcharges in place • Cost recovery through contract escalators • Dynamic pricing to recover the majority of higher costs • Tightly managing costs Market Dynamics • Fewer public lettings and late-season jobs • Lower-margin mix of work • Expect 2H26 contracting margins of ~ 8-9% Q3 Adj. EBITDA impact: ~$15M Project Delays • Delayed projects pushed further into 2027 • No projects canceled Q3 Adj. EBITDA impact: ~$5M Energy Costs • Diesel up ~40% in the quarter1 • Recoveries lag higher costs • Higher indirect impact on COGS Net Q3 Adj. EBITDA impact: ~$10M 1 Based on weekly average diesel price per gallon for the West Coast & Rocky Mountains (Source: EIA) 5 The long-term strength of our markets, integrated model and growth opportunities are unchanged
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Sharper EDGE: Self-Help Improvements ExcellenceGrowthDisciplineEBITDA Growth / Margin Expansion • Commercial Excellence • Operational Excellence • Organizational Excellence Sharper EDGE Expected to Drive the Next Phase of EBITDA and EBITDA Margin Growth Aggregates-focused M&A and Organic Growth Disciplined capital allocation Reduce SG&A as % of Revenue Adj. EBITDA + Adj. EBITDA Margin Improvement Sharper EDGE Drives Incremental GrowthEDGE – Ongoing Across All Four Pillars Commercial Operational Organizational Targeted Improvements to Drive Profitability SHARPER EDGE • Improve productivity/costs • Full value for products • Streamlined support 6
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EDGE Sharper EDGE: Operational Excellence PIT Crews • Improved plant efficiency, throughput and product mix • 2% lower aggregate variable production costs1 • 7% lower asphalt variable production costs1 Cost Discipline • Ready-mix/asphalt mix design optimization contributed to: • 5% lower cement costs1; and • 12% increase in recycled asphalt1 Asset Utilization • Optimized truck utilization • Plant and equipment upgrades • 2% increase in aggregate plant run time percentage1 • 1% increase in delivery costs despite 84% higher diesel1 Visibility & Accountability • Daily, weekly & monthly performance metrics across operations Operational • Plant reconfiguration and automation • Improve mine planning • Enhance heavy equipment utilization • Manage cementitious materials through bulk purchases • Further optimize ready-mix and asphalt mix designs • Modernize rail unloading systems in Energy Services Sharper EDGE 1 YTD 3Q26 vs YTD 3Q25 Planned Operational Improvements Sharper EDGE • Plant reconfiguration and automation • Improve mine planning • Optimizing heavy equipment/plant +$125M • Manage cementitious materials via bulk purchases + storage solutions • Further optimize ready-mix and asphalt mix designs Improving productivity, reducing costs and making the best use of our assets Improving Productivity, Reducing Costs and Making the Best Use of Our Assets Aggregate Initiatives Capital deployed next 3 years +$1/Ton Incremental gross profit increase 7
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Sharper EDGE EDGE Sharper EDGE: Commercial Excellence Dynamic Pricing • Added pricing/quoting tools with real-time analytics • Fuel surcharges to recover costs • 4% increase in aggregate pricing1 Commercial Technology • Rolled out transactional software • Extensive training completed across sales team Go To Market • Established national market-development team • Targeted more third-party aggregate sales • 11% increase in third-party aggregate sales1 Planned Commercial Improvements • Automating dashboards with real-time visibility to monitor plants and track against sales targets • Full adoption of transactional software • Targeted 3rd-party sales with volume and price initiatives • Expanding private work opportunities on data centers, power generation and semiconductor projects 1 YTD 3Q26 vs YTD 3Q25 Getting Full Value for our Materials and Services 8
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Getting Full Value for Our Materials and Services 9 Finance Modernization Sales Training Go-to-Market Mission-Critical Projects Results Aggregates § X% reduction in variable production costs § 4% improvement in plant run time percentage Asphalt § 6.6% reduction in variable production costs § 0.3% reduction in liquid asphalt oil content per ton ton of asphalt Ready Mix § 2% reduction in cement costs § 10% YTD more yardage per truck operated Getting full value for our materials and services Precision Pricing Cost Recovery Go-to-Market § Companywide capabilities for data centers and power Mission-Critical Projects Standardization • Streamline certain administrative processes to remove inefficiencies and speed up decision making. AI Utilization • Developed AI team Sharper EDGE: Organizational Excellence Sharper EDGE • Embedding IT as solutions provider to help drive profit • Further leverage buying power • Shorter timelines for ticket processing, contract billing, and invoice/ timecard approvals Improvements Designed to Support our Operations and Reduce SG&A
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Revenue $366M $308M $462M $168M $1,276M % Change (8)% 34% 6% —% 6% Adjusted EBITDA1 $91M $56M $102M $32M $272M % Change (1)% 10% 2% (18)% —% TTM Adjusted EBITDA Margin1,2 19.0% 14.1% 14.8% 15.3% 14.8% Mountain Central Consolidated3 Q3 2026 Segment Performance Energy ServicesWest 10 1 See Appendix for a reconciliation of this non-GAAP financial measure to the most directly comparable GAAP financial measure. 2 TTM refers to trailing twelve months. 3 Consolidated results include Corporate Services and Eliminations.
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$53M $50M Average Selling Price1 3Q25 3Q26 Change Aggregates (per ton) $18.78 $19.59 4% Ready-Mix Concrete (per cubic yard) $196.43 $201.90 3% Asphalt (per ton) $64.43 $63.84 (1)% Gross Profit Volume Improvement on Materials Q3 2026 Product Line Results $59M $74M $40M $39M $34M $28M $64M $51M Contracting ServicesAsphaltReady-Mix Volume (in thousands) 3Q25 3Q26 Change Aggregates (tons) 11,610 12,747 10% Ready-Mix Concrete (cubic yards) 1,331 1,338 1% Asphalt (tons) 3,111 3,368 8% 11 3Q25 3Q26 Aggregates Liquid Asphalt +50 bps 1 Average selling price includes freight, delivery and other revenue. 2 Product mix-adjusted aggregate average selling price increased 5.9%. 3Q25 3Q263Q25 3Q263Q25 3Q26 3Q25 3Q26 2 +24% (5%) (4%) (17%) (20%)
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Capital Allocation Disciplined Capital Deployment; Strong Balance Sheet Reinvest in Operations $37M ¹ As of 9/30/2026. 2 See Appendix for reconciliation of this non-GAAP financial measure to the most directly comparable GAAP financial measure. 3 Long-Term Net Debt/TTM Adj. EBITDA Target. • FY26 expected at 5-6% of revenue • • High-return plant and equipment upgrades • Capital Allocation Priorities • South Dakota aggregates expansion – rail-served, expected completion in 2027 • Organic ready-mix growth investments in Idaho, Minnesota and Texas • Leverage Profile $566.2M in available liquidity1 Organic & Acquisition Growth 2.9x Net Debt / TTM Adj. EBITDA1,2 2.5x Long-term net leverage target3 maintenance & improvement capex (Q3) $21M growth investment (Q3) 12
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FY 2026 Guidance1 Low High Revenue $3,375M $3,425M Adjusted EBITDA $475M $505M 1 Guidance ranges based on normal weather, economic and operating conditions, and do not include expected impact of potential acquisitions. FY 2026 Guidance 13 • Aggregates volumes to increase high-single digits to low-double digits and pricing to increase mid-single digits • Ready-mix volumes to increase high-single digits to low-double digits • Asphalt volumes to increase high-single digits to low-double digits • Depreciation, depletion and amortization to increase mid-teens FY 2026 Guidance1 Assumptions
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14 Positioned Well for 2027 and Beyond Margin expansion Significant runway through operational, commercial and organizational self-help initiatives Organic growth investments Major aggregates-focused organic projects in South Dakota and Texas moving closer to completion Disciplined M&A Active pipeline in a highly fragmented industry creates vertically integrated growth opportunities Attractive end markets Public and private opportunities in states projected to grow faster than the national average Resilient, vertically integrated model More opportunities to engage across the project lifecycle and capture value Dedicated team• 7,200 teammates committed to one another, working safely and delivering for customers and shareholders Multiple Levers to Drive Sustainable Growth and Long-Term Value Creation • • • • •
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Appendix and Non-GAAP Financial Measures
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EBITDA and Adjusted EBITDA – Reconciliation 16 Nine Months Ended (in millions) September 30, 2026 September 30, 2025 Net income $102.6 $125.1 Depreciation, depletion and amortization 164.1 142.4 Interest expense, net 68.1 57.1 Income taxes 38.3 42.9 EBITDA $373.1 $367.5 Unrealized (gains) losses on benefit plan investments (1.5) (2.2) Stock-based compensation expense 7.8 8.5 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 0.2 3.3 Adjusted EBITDA $379.6 $377.1 Revenue $2,624.3 $2,390.9 Net income margin 3.9 % 5.2 % EBITDA margin 14.2 % 15.4 % Adjusted EBITDA margin 14.5 % 15.8 % Three Months Ended (in millions) September 30, 2026 September 30, 2025 Net income $137.9 $143.2 Depreciation, depletion and amortization 55.7 53.4 Interest expense, net 23.9 22.4 Income taxes 50.7 50.2 EBITDA $268.2 $269.2 Unrealized (gains) losses on benefit plan investments 1.0 (1.1) Stock-based compensation expense 2.4 2.9 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 0.1 1.8 Adjusted EBITDA $271.7 $272.8 Revenue $1,275.6 $1,203.7 Net income margin 10.8 % 11.9 % EBITDA margin 21.0 % 22.4 % Adjusted EBITDA margin 21.3 % 22.7 %
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Adjusted EBITDA TTM1 Reconciliation Twelve Months Ended September 30, 2026 Nine Months Ended September 30, 2026 Twelve Months Ended December 31, 2025 Nine Months Ended September 30, 2025 (In millions) Net income $134.6 $102.6 $157.1 $125.1 Depreciation, depletion and amortization 215.4 164.1 193.7 142.4 Interest expense, net 88.4 68.1 77.4 57.1 Income taxes 51.5 38.3 56.1 42.9 EBITDA $489.9 $373.1 $484.3 $367.5 Unrealized (gains) losses on benefit plan investments (2.2) (1.5) (2.9) (2.2) Stock-based compensation expense 10.7 7.8 11.4 8.5 Impact of selling acquired inventory after markup to fair value as part of acquisition accounting 0.6 0.2 3.7 3.3 Adjusted EBITDA $499.0 $379.6 $496.5 $377.1 Revenue $3,379.4 $2,624.3 $3,146.0 $2,390.9 Net income margin 4.0 % 3.9 % 5.0 % 5.2 % EBITDA margin 14.5 % 14.2 % 15.4 % 15.4 % Adjusted EBITDA margin 14.8 % 14.5 % 15.8 % 15.8 % 17 1 TTM refers to trailing twelve-month.
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Net Leverage Reconciliation Net Leverage Reconciliation ($ in millions, except net leverage) As of September 30, 2026 Long-term debt $1,534.4 Long-term debt – current portion 18.9 Total debt $1,553.3 Add: Unamortized debt issuance costs 17.1 Total debt, gross $1,570.4 Less: Cash and cash equivalents, excluding restricted cash 118.0 Total debt, net $1,452.4 TTM1 Adjusted EBITDA $499.0 Net leverage 2.9x 1 TTM refers to trailing twelve-month. 18
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Disclaimer Our projections for 2026 Adjusted EBITDA, 2026 year-end net leverage target and long-term net leverage target are non-GAAP financial measures that exclude or otherwise have been adjusted for non-GAAP adjustment items from our financial statements. When we provide our forward-looking 2026 Adjusted EBITDA, 2026 year-end net leverage target and long-term net leverage target, we do not provide reconciliations of these non-GAAP financial measures as we are unable to predict with a reasonable degree of certainty the actual impact of the non-GAAP adjustment items. By their very nature, non-GAAP adjustment items are difficult to anticipate with precision because they are generally associated with unexpected and unplanned events that impact our company and its financial results, including, but not limited to, the potentially high variability, complexity and low visibility with respect to the items that would be excluded from the applicable GAAP measure in the relevant future period, such as unusual gains and losses, the impact and timing of potential acquisitions and divestitures, certain financing costs and other structural changes or their probable significance. Therefore, we are unable to provide a reconciliation of these measures without unreasonable efforts. 19