EXHIBIT 11 W. R. GRACE & CO. AND SUBSIDIARIES WEIGHTED AVERAGE NUMBER OF SHARES AND EARNINGS USED IN PER SHARE COMPUTATIONS For the three and nine months ended September 30, 1997 and 1996 (Dollars in millions, except per share; shares in thousands) 3 Mos. Ended 9 Mos. Ended 9/30/97 9/30/96 9/30/97 9/30/96 --------------------- -------------------- EARNINGS PER SHARE: Weighted average shares outstanding.................. 73,662 91,092 73,885 95,188 ======= ======== ======== ======== Net income........................................... $ 71.1 $2,519.9 $ 234.9 $2,917.4 Dividends paid on preferred stocks................... - (.1) - (.4) -------- --------- -------- -------- Income used in per share computation of earnings..... $ 71.1 $ 2,519.8 $ 234.9 $2,917.0 ======== ========= ======== ======== Net income per share................................. $ .97 $ 27.66 $ 3.18 $ 30.64 PRIMARY: Weighted average shares outstanding.................. 73,662 91,092 73,885 95,188 Dilutive effect (as determined by the application of the treasury stock method)................... 2,377 2,262 2,295 1,978 -------- --------- -------- -------- Weighted average number of shares 76,039 93,354 76,180 97,166 ======= ======== ======== ======== outstanding - primary........................... Net income........................................... $ 71.1 $2,519.9 $ 234.9 $2,917.4 Dividends paid on preferred stocks................... - (.1) - (.4) -------- --------- -------- --------- Income used in per share computation of earnings and in per share computation of earnings assuming dilutive effect........................ $ 71.1 $ 2,519.8 $ 234.9 $ 2,917.0 ======== ========= ======== ========= Net income per share - primary....................... $ .93 $ 26.99 $ 3.08 $ 30.02 FULLY DILUTED: Weighted average shares outstanding.................. 73,662 91,092 73,885 95,188 Dilutive effect (as determined by the application of the treasury stock method)................... 2,686 2,826 2,687 2,826 --------- --------- -------- -------- Weighted average number of shares outstanding - fully diluted..................... 76,348 93,918 76,572 98,014 ======== ========= ======== ======== Net income........................................... $ 71.1 $2,519.9 $ 234.9 $2,917.4 Dividends paid on preferred stocks................... - (.1) - (.4) ---------- --------- -------- -------- Income used in per share computation of earnings and in per share computation of earnings assuming dilutive effect........................ $ 71.1 $2,519.8 $ 234.9 $2,917.0 ======== ======== ======= ======== Net income per share - fully diluted................. $ .93 $ 26.83 $ 3.07 $ 29.76