1 EXHIBIT 11 W. R. GRACE & CO. AND SUBSIDIARIES WEIGHTED AVERAGE NUMBER OF SHARES AND EARNINGS USED IN PER SHARE COMPUTATIONS (Unaudited) The weighted average number of shares of Common Stock outstanding were as follows (in thousands): 3 Mos. Ended 6 Mos. Ended 6/30/96 - 6/30/95 6/30/96 - 6/30/95 ----------------------- --------------------- Weighted average number of shares of Common Stock outstanding . . . . . . . . . . . . . . . . . 96,634 95,116 97,259 94,629 Additional dilutive effect of outstanding options (as determined by the application of the treasury stock method) . . . . . . . . . . . . . . . . . . . 1,878 2,486 2,022 2,486 ------ ------ ------ ------ Weighted average number of shares of Common Stock outstanding assuming full dilution . . . . . 98,512 97,602 99,281 97,115 ====== ====== ====== ====== Income used in the computation of earnings per share were as follows (in millions except per share): 3 Mos. Ended 6 Mos. Ended 6/30/96 - 6/30/95 6/30/96 - 6/30/95 ---------------------- --------------------- Net income . . . . . . . . . . . . . . . . . . . . $333.9 $78.7 $397.5 $126.2 Dividends paid on preferred stocks . . . . . . . . (.2) (.2) (.3) (.3) ------ ----- ------ ------ Income used in per share computation of earnings and in per share computation of earnings assuming full dilution . . . . . . . . . . $333.7 $78.5 $397.2 $125.9 ====== ===== ====== ====== Earnings per share . . . . . . . . . . . . . . . . $ 3.45 $ .83 $ 4.09 $ 1.33 Earnings per share assuming full dilution . . . . . $ 3.39 $ .80 $ 4.00 $ 1.30