20220233 SSUUSTSTAAINAINABBILITILITY REY REPPORORTT Sustainability Mission sMission sttaattemenement:t: WWe are are building fe building for North or North AmericaAmerica’s fut’s futururee. . WWe conduce conductt our business in a wour business in a waay thay that sust susttains the naains the natturural enal envirvironmenonment, the prt, the prosperiosperittyy Message from Management at Kiewit oof our emplof our employyees and communiees and communities and our economic grties and our economic groowwth.th. Our Sustainability program is defined under three core pillars – Environmental, Social and Governance – with a defined 1. Overview objective and material topics for each pillar. About Kiewit Sustainability at Kiewit Our Projects 2. Governance Corporate Governance Supply Chain 3. Environmental Environmental Stewardship Greenhouse Gases & ENVIRONMENTAL SOCIAL GOVERNANCE Energy Consumption Be responsible stewards of the environment Ensure the safety, wellbeing and success Conduct our operations responsibly and 4. Social and pursue opportunities to operate our of our workforce, business partners and with integrity to build a stronger organization Health & Safety business more sustainably communities for future generations of Kiewit employees Diversity, Equity & Inclusion Talent & Workforce MAMATERIALTERIAL T TOPICSOPICS MAMATERIALTERIAL T TOPICSOPICS MAMATERIALTERIAL T TOPICSOPICS Development Community Engagement ■ Environmental Stewardship ■ Health & Safety ■ Corporate Governance Appendix ■ Greenhouse Gases & Energy ■ Diversity, Equity & Inclusion ■ Supply Chain Consumption ■ Talent Development ■ Community Engagement 5555