Environmental sustainability is more than the right thing to do, it’s good business. We take a comprehensive approach to environmental stewardship that extends to all levels of our organization. Environmental compliance, resource efficiencies, emissions reductions, water use, recycling programs and land reclamation initiatives are all integral to our sustainability program. Conservation and environmental stewardship programs also influence how we work with the land beyond our primary use, and we strive to promote biodiversity and establish native landscapes whenever possible. We view environmental sustainability as an important part of our business, an opportunity to reduce our environmental impact, and a way to ensure the responsible use of the lands on which we operate.

Although Summit Materials, Inc. (“Summit,” or “Company”) believes that the assumptions inherent in these forward-looking statements are reasonable, the reader should not place undue reliance on these statements.Forward looking informationis prepared as of January 1, 2022. Please see our “Risk Factors” in Summit’s Annual Report on Form 10-K as filed with the Securities and Exchange Commission and our subsequent filings.