20220233 SSUUSTSTAAINAINABBILITILITY REY REPPORORTT 2023 Highlights ■ We issued an updated Vendor Code of Conduct to ■ We implemented process improvements for analyzing ■ We updated the supplier page on Kiewit.com to Message from Management clarify expectations related to anti-money laundering spend with disadvantaged business enterprises (DBE) provide a more user-friendly experience for suppliers. and the procurement of wood products. across the United States. The improvements allow This webpage o昀昀ers many resources to our partners to for more streamlined reporting on a project and streamline our business interactions. It includes state- 1. Overview ■ We continue to implement process improvements for corporate basis. of-the-art solutions to simplify the way suppliers and About Kiewit tracking spend with Indigenous suppliers in Canada subcontractors interact with the organization, from to enable more streamlined reporting on a project ■ We began developing sustainability training for our Sustainability at Kiewit Kiewit Supply Network personnel and intend to begin finding diverse supplier opportunities to expediting and corporate basis. invoice payments. Since its launch, we’ve analyzed Our Projects training in 2024. feedback and will continue to prioritize continuous ■ We engaged key suppliers to better understand how improvement of this webpage. Our goal is to improve 2. Governance CODE OF our supplier relationships can be leveraged to support access and accessibility to information as we Corporate Governance CONDUCT View our Vendor Code of Conduct our sustainability e昀昀orts. We will continue to refine strengthen partnerships in our supply chain. Supply Chain our approach to collecting qualitative and quantitative feedback from these vendors, specifically targeting ■ We worked with diversity organizations to support those that supply materials with the most significant local networking events and engage with suppliers. 3. Environmental environmental footprint. Read more beginning on Pg. 25. Environmental Stewardship Greenhouse Gases & Energy Consumption 4. Social Health & Safety Diversity, Equity & Inclusion Talent & Workforce Development Community Engagement Appendix 24242424