Third Quarter 2023 Financial Results Overview

Allowance for Credit Losses Allowances for credit losses trended higher . • • . Our total provision for credit losses was $736MM in Q3/23, compared to $438MM last quarter Total allowance coverage increased from 66bps in Q2/23 to 73bps this quarter About 80% of our performing provision in Q3/23 was driven by updates to our economic outlook • • Debt service ratio for Canadian retail Remainder was largely attributable to portfolio growth, credit migration and other movements Provision on impaired loans was $478MM, up $99MM quarter-over-quarter Impaired provision was attributable to both retail and business and government loans portfolios Allowance for Credit Losses ($MM) - Q3/23 Movements Allowance Coverage 1 62bps 66bps +5bps +5bps +2bps +2bps -7bps 73bps QoQ increase (+7bps) 89 125 3,936 ( 381 ) 264 258 3,581 3,276 Impaired Provisions $478MM Q4/22 Allowance Q2/23 Allowance Performing Provisions Impaired Provisions Retail 2 Impaired Provisions - Office Impaired Provisions - Other 3 Net Write-offs & Other Q3/23 Allowance Endnotes are included on slides 46 to 51. CIBC◇ Third Quarter, 2023 22

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