1 EXHIBIT 11-3 DTE ENERGY COMPANY AND SUBSIDIARY COMPANIES PRIMARY AND FULLY DILUTED EARNINGS PER SHARE OF COMMON STOCK Three Months Twelve Months Ended Ended March 31, 1996 March 31, 1996 -------------- -------------- (Thousands, except per share amounts) PRIMARY: Net Income ................................. $108,440 $408,271 Weighted average number of common shares outstanding (a) .................... 145,120 145,613 Earnings per share of Common Stock based on weighted average number of shares outstanding ..................... $ 0.75 $ 2.82 FULLY DILUTED: Net Income ................................. $108,440 $408,271 Convertible Preferred Stock dividends ...... - 125 -------- -------- $108,440 $408,396 ======== ======== Weighted average number of common shares outstanding (a) .................... 145,120 144,613 Conversion of convertible Preferred Stock .. - 173 -------- -------- 145,120 144,786 ======== ======== Earnings per share of Common Stock assuming conversion of outstanding convertible Preferred Stock ............... $ 0.75 $ 2.82 - --------------- (a) Based on a daily average.