Strategies for Sustainable Growth and Resilience

Overcoming Inflation & EDGE in Action ◉ Inflation has been a significant headwind for the industry Recent inflationary pressures have increased cost of raw materials by over 10% relative to historical average annual increases of ~3%, creating a material headwind to profitability Our actions to mitigate and overcome the impact of inflation include repricing to align with our new costs and value provided YEAR-OVER-YEAR CHANGE IN AVERAGE SELLING PRICE BY PRODUCT LINE 18% 19% 13% 9% 9% 9% 8% 7% 24% 33% 28% 17% 14% 10% 17% Q1'22 Q2'22 Q3'22 Q4'22 Q1'23 Aggregates ($ / ton) Ready-mix Concrete ($/ c.y.) Asphalt ($/ ton) KNIFE RIVER 45

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