Investor Presentaiton

Regional Details (Cont'd) MOUNTAIN REGION FINANCIAL PERFORMANCE NORTH CENTRAL REGION FINANCIAL PERFORMANCE 2022 2020-2022 2022 2020-2022 Revenue $542mm 9.6% CAGR Revenue $608mm 3.2% CAGR Gross Margin 14.3% 14.3% AVG. Gross Margin 11.8% 13.4% AVG. EBITDA Margin 13.4% 12.9% AVG. EBITDA Margin 10.7% 12.0% AVG. REVENUE MIX (2022)1 REVENUE MIX (2022)1 3.1% 11.9% 56.5% 12.8% 0 Aggregates 16.4% Ready Mix Asphalt Contracting Services 43.9% 14.3% Other 19.6% Aggregates Ready Mix Asphalt Contracting Services 21.5% Other Note: Pie chart numbers are rounded and may not sum to 100%. EBITDA, Adj. EBITDA and Cash Flow are non-GAAP measures, see Appendix for reconciliation. Other includes merchandise, transportation services and other products that individually are not considered to be a major line of business for the segment. 1 Reflects gross revenue breakdown by materials, contracting services and other. KKNIFE RIVER 57

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