EXHIBIT 11 THE GENERAL CHEMICAL GROUP INC. COMPUTATION OF EARNINGS PER COMMON SHARE (IN THOUSANDS, EXCEPT PER SHARE AMOUNT) (UNAUDITED) Earnings per share were calculated as follows: THREE MONTHS ENDED NINE MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, ------------------ ----------------- 1995 1996 1995 1996 ---- ---- ---- ---- Primary Total income used for primary earnings per share........................... $ 12,626 $ 14,634 $ 33,280 $ 30,992 ======== ======== ======== ======== Weighted average common shares outstanding.................................. 19,737 22,237 19,737 20,996 Weighted average common equivalents shares........................... -- 929 -- 480 -------- -------- -------- -------- Weighted average common and common equivalent shares..................... 19,737 23,166 19,737 21,476 ======== ======== ======== ======== Primary earnings per common share and common equivalent share ................. $ .64 $ .63 $ 1.69 $ 1.44 ======== ======== ======== ======== Fully Diluted Total income used for fully diluted earnings per share........................... $ 12,626 $ 14,634 $ 33,280 $ 30,992 ======== ======== ======== ======== Weighted average common shares outstanding.................................. 19,737 22,237 19,737 20,996 Weighted average common equivalent shares............................ -- 1,009 -- 572 -------- -------- -------- -------- Weighted average common and common equivalent shares..................... 19,737 23,246 19,737 21,568 ======== ======== ======== ======== Fully diluted earnings per common share and common equivalent share.................. $ .64 $ .63 $ 1.69 $ 1.44 ======== ======== ======== ======== -15-