EXHIBIT 11 W. R. GRACE & CO. AND SUBSIDIARIES WEIGHTED AVERAGE NUMBER OF SHARES AND EARNINGS USED IN PER SHARE COMPUTATIONS For the three and six months ended June 30, 1997 and 1996 (Dollars in millions, except per share; shares in thousands) 3 Mos. Ended 6 Mos. Ended 6/30/97 6/30/96 6/30/97 6/30/96 ---------------------- --------------------- EARNINGS PER SHARE: Weighted average shares outstanding ............. 72,761 96,634 73,999 97,259 ======= ======= ======= ======= Net income ...................................... $ 117.4 $ 333.9 $ 163.8 $ 397.5 Dividends paid on preferred stocks .............. -- (.2) -- (.3) ------- ------- ------- ------- Income used in per share computation of earnings $ 117.4 $ 333.7 $ 163.8 $ 397.2 ======= ======= ======= ======= Net income per share ............................ $ 1.61 $ 3.45 $ 2.21 $ 4.09 PRIMARY: Weighted average shares outstanding ............. 72,761 96,634 73,999 97,259 Dilutive effect (as determined by the application of the treasury stock method) .............. 2,072 1,878 2,253 2,022 ------- ------- ------- ------- Weighted average number of shares outstanding - primary ...................... 74,833 98,512 76,252 99,281 ======= ======= ======= ======= Net income ...................................... $ 117.4 $ 333.9 $ 163.8 $ 397.5 Dividends paid on preferred stocks .............. -- (.2) -- (.3) ------- ------- ------- ------- Income used in per share computation of earnings and in per share computation of earnings assuming dilutive effect ................... $ 117.4 $ 333.7 $ 163.8 $ 397.2 ======= ======= ======= ======= Net income per share - primary .................. $ 1.57 $ 3.39 $ 2.15 $ 4.00 FULLY DILUTED: Weighted average shares outstanding ............. 72,761 96,634 73,999 97,259 Dilutive effect (as determined by the application of the treasury stock method) .............. 2,272 1,878 2,357 2,022 ------- ------- ------- ------- Weighted average number of shares outstanding - fully diluted ................ 75,033 98,512 76,356 99,281 ======= ======= ======= ======= Net income ...................................... $ 117.4 $ 333.9 $ 163.8 $ 397.5 Dividends paid on preferred stocks .............. -- (.2) -- (.3) ------- ------- ------- ------- Income used in per share computation of earnings and in per share computation of earnings assuming dilutive effect ................... $ 117.4 $ 333.7 $ 163.8 $ 397.2 ======= ======= ======= ======= Net income per share - fully diluted ............ $ 1.56 $ 3.39 $ 2.15 $ 4.00