20220233 SSUUSTSTAAINAINABBILITILITY REY REPPORORTT 2023 Metrics Message from Management OOVERALLVERALL TRAINING TRAINING NANATIONALTIONAL CENTER F CENTER FOROR EMPLEMPLOOYEE DEVELYEE DEVELOPMENTOPMENT TUITIONTUITION INVEINVESSTMENTTMENT CONSCONSTRUCTRUCTION EDUCTION EDUCAATIONTION AND FEEDBAND FEEDBAACKCK REIMBURSEMENTREIMBURSEMENT AND REAND RESEARCH CERSEARCH CERTIFIEDTIFIED 1. Overview 1,1,323277,,881881 TRAININGTRAINING 100%100% About Kiewit $629$629,,600600 Sustainability at Kiewit annual hours of on-the-job, 342342 of qualifying* employees invested in tuition reimbursement district and corporate received an annual performance Our Projects training completed by full-time NCCER participants and wage review staff employees *Full-time staff employees, excludes executives and 2. Governance employees hired 6 months or less prior to review cycle Corporate Governance 171777 Supply Chain $7$7,8,84455 32,32,805805 63%63% people who used NCCER hours tuition reimbursement 3. Environmental average annual spend per full-time staff employees full-time staff employee on completed a Right-Time Environmental Stewardship training and development Feedback check-in for Greenhouse Gases & continuous development Energy Consumption feedback beyond the annual performance and wage 4. Social review cycle Health & Safety Diversity, Equity & Inclusion Talent & Workforce Development Community Engagement Appendix 71717171