EXHIBIT 11 AMGEN INC. COMPUTATION OF PER SHARE EARNINGS PRIMARY COMPUTATION (In thousands except per share data) (Unaudited) Three Months Ended Six Months Ended June 30, June 30, 1994 1993 1994 1993 -------- -------- -------- -------- Income before cumulative effect of a change in accounting principle... $107,464 $100,224 $200,924 $180,784 Cumulative effect of a change in accounting principle.............. - - - 8,738 -------- -------- -------- -------- Net income............... $107,464 $100,224 $200,924 $189,522 ======== ======== ======== ======== Applicable common and common stock equivalent shares: Weighted average shares of common stock outstanding during the period............. 132,947 135,765 133,452 136,076 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants............... 6,662 7,912 7,034 8,618 -------- -------- -------- -------- Weighted average shares of common stock and common stock equivalents outstanding during the period....... 139,609 143,677 140,486 144,694 ======== ======== ======== ======== Earnings per common share primary: Income before cumulative effect of a change in accounting principle............... $ .77 $ .70 $ 1.43 $ 1.25 Cumulative effect of a change in accounting principle............... - - - .06 -------- -------- -------- -------- Net income................ $ .77 $ .70 $ 1.43 $ 1.31 ======== ======== ======== ======== EXHIBIT 11 AMGEN INC. COMPUTATION OF PER SHARE EARNINGS FULLY DILUTED COMPUTATION (In thousands except per share data) (Unaudited) Three Months Ended Six Months Ended June 30, June 30, 1994 1993 1994 1993 -------- -------- -------- -------- Income before cumulative effect of a change in accounting principle... $107,464 $100,224 $200,924 $180,784 Cumulative effect of a change in accounting principle.............. - - - 8,738 -------- -------- -------- -------- Net income............... $107,464 $100,224 $200,924 $189,522 ======== ======== ======== ======== Applicable common and common stock equivalent shares: Weighted average shares of common stock outstanding during the period............. 132,947 135,765 133,452 136,076 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants............... 6,684 7,912 7,034 8,618 -------- -------- -------- -------- Weighted average shares of common stock and common stock equivalents outstanding during the period...... 139,631 143,677 140,486 144,694 ======== ======== ======== ======== Earnings per common share fully diluted: Income before cumulative effect of a change in accounting principle.............. $ .77 $ .70 $ 1.43 $ 1.25 Cumulative effect of a change in accounting principle.............. - - - .06 -------- -------- -------- -------- Net income............... $ .77 $ .70 $ 1.43 $ 1.31 ======== ======== ======== ========