First Quarter 2017 Financial Review

Loans Declined with Typical Seasonality & Energy Portfolio Reduction Loan yield increased 21 basis points Total Loans ($ in billions) -Loan Yields 49.5 49.2 48.9 48.4 49.1 47.9 48.3 3.57 3.38 3.31 3.33 3.36 1Q16 2Q16 3Q16 4Q16 1Q17 Average Balances 4Q16 1Q17 Period-end Average loans decreased $902MM Mortgage Banker Finance $289MM Energy +$144MM National Dealer Services Loan yield +21 bps + 20 bps due to increase in rates +4Q16 lease residual value adjustment Period-end commitments $51.3B ■ Line utilization¹ remained stable at 51% Loan pipeline increased significantly ■ Period-end commitments to commit up 44% to $1.2B 1Q17 compared to 4Q16 1Utilization of commercial commitments as a percentage of total commercial commitments at period-end Seasonal Decline in Noninterest-bearing Deposits Deposit cost unchanged Total Deposits ($ in billions) Deposit Rates1 Comerica Bank 5 59.6 59.0 58.9 58.1 57.8 56.7 56.5 Average deposits decreased 0.14 0.14 0.14 0.14 0.14 1Q16 2Q16 3Q16 4Q16 1Q17 Average Balances 4Q16 1917 Period-end 1Q17 compared to 4Q16 1Interest costs on interest-bearing deposits 2At 3/31/17 - $920MM Corporate Banking -$280MM Technology & Life Sciences - $155MM Small Business -$143MM Mortgage Banker Finance - $121MM Energy Noninterest-bearing declined $1.6B Loan to Deposit Ratio² of 82% Comerica Bank 6

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