Investor Presentation February 2024

BMO Capital Markets Strength and Value Drivers A valued financial partner to our clients; leveraging our people, innovative solutions and capital supporting the growth aspirations of our clients Unified coverage and integrated North American platform, delivering a seamless and exceptional client experience Well diversified platform and business mix by sector, geography, product and currency, including a strong and scalable U.S. business Strong risk management and regulatory and compliance capabilities Net Income ROE 2024 Strategic Priorities Drive client-focused growth through our One Client strategy, with improved connectivity and integrated offerings to deliver greater value and a better experience for our clients Be an industry leader in sustainable finance and the lead partner in our clients' transition to a net zero world Q1'24 Financial Highlights Reported Adjusted¹ $393MM $408MM Net Income Y/Y Growth (19.4)% (17.4)% Revenue Y/Y Growth (teb)² (6.5)% (6.5)% PPPT³ Y/Y Growth (22.3)% (20.0)% 11.6% 12.0% Efficiency Ratio² 70.2% 69.0% Operating Leverage² (8.8)% (7.7)% Average Gross Loans and Acceptances $82B Reported Net Income ($MM) Leverage digital-first capabilities and data to improve operational efficiency and deliver innovative solutions 488 472 393 370 295 Foster a winning culture, focused on alignment, empowerment and recognition, with a commitment to a diverse and inclusive workplace Q1'23 Q2'23 Q3'23 Q4'23 Q1'24 Prior period amounts have been reclassified to conform with the current period presentation 1 Adjusted results and measures are non-GAAP, see slide 56 for more information and slide 58 for adjustments to reported results 2 Operating group revenue is stated on a taxable equivalent basis (teb). This teb adjustment (Q1'24 $19MM) is offset in Corporate Services. operating leverage and efficiency ratio are calculated based on revenue (teb) 3 Reported and adjusted Pre-Provision Pre-Tax earnings (PPPT) are non-GAAP measures. See slide 56 for more information and slide 59 for calculation of PPPT See slide 60 for more information on the reported and adjusted results of our operating groups BMOM Investor Presentation ⚫ February 2024 26

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