1 Exhibit 11 CABOT CORPORATION Earnings per Common Share for the Three Month Period Ended March 31, 1994 Statement Regarding Computation of Per Share Earnings (In thousands, except per share amounts) Primary Fully Diluted Shares of common stock outstanding at January 1, 1994, less treasury stock 18,779 18,779 Plus net weighted shares of treasury stock issued 6 6 Plus common stock equivalents: Effect of convertible preferred stock conversion - 1,557 Effect of equity incentive awards 304 310 --------- --------- Weighted average shares outstanding 19,089 20,652 ========= ========= Income applicable to common shares $ 21,451 $ 21,451 Dividends on preferred stock - 897 Preferred stock conversion compensation shortfall - (624) --------- --------- Earnings applicable to common shares $ 21,451 $ 21,724 ========= ========= Earnings per common share $ 1.12 $ 1.05 ========= ========= 2 EXHIBIT 11 CABOT CORPORATION Earnings per Common Share for the Six Month Period Ended March 31, 1994 Statement Regarding Computation of Per Share Earnings (In thousands, except per share amounts) Primary Fully Diluted Shares of common stock outstanding at October 1, 1993, less treasury stock 18,726 18,726 Plus net weighted shares of treasury stock issued 44 44 Plus common stock equivalents: Effect of convertible preferred stock conversion - 1,557 Effect of equity incentive awards 314 314 --------- -------- Weighted average shares outstanding 19,084 20,641 ========= ======== Income applicable to common shares $ 36,510 $ 36,510 Dividends on preferred stock - 1,796 Preferred stock conversion compensation shortfall - (1,250) --------- -------- Earnings applicable to common shares $ 36,510 $ 37,056 ========= ======== Earnings per common share $ 1.91 $ 1.80 ========= ========