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 ---------------------- 3/31/96 3/31/95 ------- ------- Weighted average number of shares of Common Stock outstanding................................................................. 97,888 94,137 Additional dilutive effect of outstanding options (as determined by the application of the treasury stock method)..................................................................... 2,166 2,018 ------- ------ Weighted average number of shares of Common Stock outstanding assuming full dilution.......................................... 100,054 96,155 ======= ====== Income used in the computation of earnings per share were as follows (in millions, except per share): 3 Mos. Ended ---------------------- 3/31/96 3/31/95 ------- ------- Net income.............................................................................. $63.6 $47.5 Dividends paid on preferred stocks...................................................... (.1) (.1) ----- ----- Income used in per share computation of earnings and in per share computation of earnings assuming full dilution.............................. $63.5 $47.4 ===== ===== Earnings per share...................................................................... $ .65 $ .50 Earnings per share assuming full dilution............................................... $ .63 $ .49