1 EXHIBIT 11 CABOT CORPORATION Earnings per Common Share for the Year Ended September 30, 1995 Statement Re: Computation of Per Share Earnings (In thousands, except per share amounts) Primary Fully Diluted ------- ------------- Shares of common stock outstanding at October 1, 1994, less treasury stock 37,991 37,991 Plus net weighted shares of treasury stock issued 16 16 Plus common stock equivalents: Effect of convertible preferred stock conversion - 3,075 Effect of equity incentive awards 719 858 -------- -------- Weighted average shares outstanding 38,726 41,940 ======== ======== Income applicable to common shares $168,381 $168,381 Dividends on preferred stock - 3,551 Preferred stock conversion compensation shortfall - (2,315) -------- -------- Earnings applicable to common shares $168,381 $169,617 ======== ======== Earnings per common share $ 4.35 $ 4.04 ======== ========