Strategies for Sustainable Growth and Resilience

Established Framework for Investment EFFECTIVE ‘PLAYBOOK' FOR PROFITABLE GROWTH Disciplined Approach Focused on strategic, attractively valued acquisitions and investments for market leadership Returns Focus Prioritize acquisitions and investment to achieve high returns on invested capital Bottom-up Approach Utilize regional team to lead process for expansion and seamless platform integration under rigorous oversight from management RECENT ACQUISITIONS Sweetman Const.Co Sweetman (2018) Expanded into strong Sioux Falls area Added -55mm tons of aggregate reserves; 3 asphalt plants, 7 ready-mix plants, with a fleet of 61 ready-mix trucks Since acquisition, saw a 28% increase¹ in revenue and 20% increase1 in profitability RECENT INVESTMENTS Prestress (2023) ~$60mm invested Expanded market areas to Washington state Increased scale and efficiencies with existing prestress operations Best-in-class team delivered improved productivity across the division EMPLOYEES SAFETY B BAKER ROCK Baker Rock (2021)² ■ Significantly expanded presence in key strategic growth locations surrounding the Portland metro area Added 88mm tons of aggregate reserves; 4 asphalt plants Since acquisition, saw a 60% increase in revenue and 59% increase in profitability Honey Creek (2023) Note: Represents average of first four years of ownership from 2019-2022 2 Figures pertain to primary quarry site. KNIFE RIVER ~$63mm invested Added 50mm tons of aggregates reserves Replaces aggregates previously purchased from third parties Strategically important to serve Texas operations for strong market position 43

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