Exhibit 99.1 Report to Shareholders for the Second Quarter, 2023 www.cibc.com May 25, 2023 Report of the President and Chief Executive Officer Overview of results CIBC today announced its financial results for the second quarter ended April 30, 2023. Second quarter highlights YoY QoQ Q2/23 Q2/22 Q1/23 Variance Varianc e Revenue $5,702 million $5,376 million $5,927 million +6% -4% Reported Net Income $1,688 million $1,523 million $432 million +11% +291% Adjusted Net Income (1) $1,627 million $1,652 million $ ...