1 EXHIBIT 11.5 DTE ENERGY COMPANY AND SUBSIDIARY COMPANIES PRIMARY AND FULLY DILUTED EARNINGS PER SHARE OF COMMON STOCK Three Nine Twelve Months Months Months Ended Ended Ended September 30, 1996 September 30, 1996 September 30, 1996 ------------------ ------------------ ------------------ (Thousands, except per share amounts) PRIMARY: Net Income $44,933 $231,626 $305,893 Weighted average number of common shares outstanding (a) 145,120 145,120 144,728 Earnings per share of Common Stock based on weighted average number of shares outstanding $0.31 $1.60 $2.11 FULLY DILUTED: Net Income $44,933 $231,626 $305,893 Convertible Preferred Stock dividends - - 12 -------- --------- --------- $44,933 $231,626 $305,905 ======== ========= ========= Weighted average number of common shares outstanding (a) 145,120 145,120 144,728 Conversion of convertible Preferred Stock - - 58 -------- --------- --------- 145,120 145,120 144,786 ======== ========= ========= Earnings per share of Common Stock assuming conversion of outstanding convertible Preferred Stock $0.31 $1.60 $2.11 - ----------------------------------------- (a) Based on a daily average.