1 Exhibit (11) - Statement Re: Computation of Earnings Per Share COMPUTATION OF EARNINGS PER SHARE Comerica Incorporated and Subsidiaries (In thousands, except per share data) Three Months Ended Nine Months Ended September 30 September 30 ------------------ ------------------- 1999 1998 1999 1998 ------- -------- -------- -------- Basic: Average shares outstanding 156,154 155,278 156,033 155,990 ======== ======== ======== ======== Net income $170,414 $154,490 $496,908 $449,256 Less preferred stock dividends 4,275 4,275 12,825 12,825 -------- -------- -------- -------- Net income applicable to common stock $166,139 $150,215 $484,083 $436,431 ======== ======== ======== ======== Basic net income per share $ 1.06 $ 0.97 $ 3,10 $ 2.80 Diluted: Average shares outstanding 156,154 155,278 156,033 155,990 Nonvested stock 164 177 169 192 Common stock equivalent: Net effect of the assumed exercise of stock options 1,993 2,635 2,215 2,770 -------- -------- -------- -------- Diluted average shares 158,311 158,090 158,417 158,952 ======== ======== ======== ======== Net income $170,414 $154,490 $496,908 $449,256 Less preferred stock dividends 4,275 4,275 12,825 12,825 -------- -------- -------- -------- Net income applicable to common stock $166,139 $150,215 $484,083 $436,431 ======== ======== ======== ======== Diluted net income per share $ 1.05 $ 0.95 $ 3.06 $ 2.75