Exhibit 99.1 Report to Shareholders for the First Quarter, 2024 www.cibc.com February 29, 2024 Report of the President and Chief Executive Officer Overview of results CIBC today announced its financial results for the first quarter ended January 31, 2024. First quarter highlights YoY QoQ Q1/24 Q1/23 (1) Q4/23 (1) Variance Variance Revenue $6,221 million $5,929 million $5,847 million +5% +6% Reported Net Income $1,728 million $433 million $1,485 million +299% +16% Adjusted Net Income (2) $1,770 million $1,84 ...