Investor Presentaiton

HFI Reclassification Surgically selected loan reclassifications from Held-For-Investment to Held- For-Sale portfolio 1 Balance Sheet Repositioning Plan Balance sheet repositioning, which included surgical sale of assets and Loan HFS reclassifications, resulted in net non- operating charges of $110 million, but will have an immediate accretive impact to regulatory capital and allow us to prioritize core client relationships with holistic lending, deposit and treasury management needs Select Asset Dispositions Significant progress in executing surgical asset sales to expeditiously improve capital and liquidity, and reduce wholesale borrowings 2 Reclassified $6.0 billion of HFI loans to HFS at an average mark of ~2% ➤ One-time Loan FV Charge: $123mm (After-Tax: $92mm) A • ~$1.74 billion asset sales completed in Q1 CET1 Benefit 1. EFR & SNC loan sales ~$920mm loan sales CET1 Impact: -12 bps Prioritizing core client relationships with holistic lending, deposit, and treasury management needs $110mm Net Non-Operating Loss Breakdown ($mm) 1Q23 P&L Impact Completed (1Q23) 2. Other loan sales 3. MSR sales $360mm MSR sales 4. Select security sales (Primarily CLOS) $460mm securities +17 bps sales - Non-Core C&I Unwind of Inefficient CLNS 1. MWL $242mm 2. EFR $25mm - Syndicated Shared National Credits (SNCs) - Capital Call & Subscription Lines (EFR) Select Residential RE - Early Buyout Resi. (EBOS) Equipment Finance leases Non-Core CRE Other $5.2 $12.7 ■Loans Sold B HFI Reclass Sec Sold & Debt Exting $92.2 -$0.5 Marks for future contracted and planned loan sales are already included in Q1 HFI reclassification fair value adjustment Note: Balance sheet information as of 3/31/23 WA Western Alliance BancorporationⓇ Contracted (2Q23) $3.0bn loans contracted for sale in Q2 ~$2.3bn in loan dispositions QTD Unwind of inefficient CLNS $275mm EFR CLN repaid QTD Remaining C ~$3.0bn HFS loans remaining (2023) +33 bps 8

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