Investor Presentaiton

Additional strategic opportunities across key potential sources of value Flawless Day 1/ Day 100 Execution Execute in alignment with our S.T.E.E.L. Principles Focus operating model and integration on safety, enterprise risk and value capture opportunities Minimize distraction and preserve unique culture at Big River Steel USS Potential sources of value USS BRS Deliver Value Capture Customer Value Operational Optimization / Enhancement Marketing/ Branding BIG RIVER STEEL Supply Chain / Procurement Corporate Functions Capital Spending Significant synergy opportunity to be validated between now and closing USS United States Steel Corporation 10

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