EXHIBIT 11 AMGEN INC. COMPUTATION OF PER SHARE EARNINGS PRIMARY COMPUTATION Years ended December 31, 1994, 1993 and 1992 (In thousands, except earnings per share data) 1994 1993 1992 ------- ------- ------- Income before cumulative effect of a change in accounting principle....... $319,665 $374,575 $357,600 Cumulative effect of a change in accounting principle................. - 8,738 - -------- -------- -------- Net income............................. $319,665 $383,313 $357,600 ======== ======== ======== Applicable common and common stock equivalent shares: Weighted average shares of common stock outstanding during the period.......................... 133,155 135,257 134,305 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants........................ 6,635 8,354 12,992 ------- ------- ------- Weighted average shares of common stock and common stock equivalents outstanding during the period........ 139,790 143,611 147,297 ======= ======= ======= Earnings per common share primary: Income before cumulative effect of a change in accounting principle.... $ 2.29 $ 2.61 $ 2.43 Cumulative effect of a change in accounting principle.............. - .06 - ------- ------- ------- Net income........................... $ 2.29 $ 2.67 $ 2.43 ======= ======= ======= EXHIBIT 11 AMGEN INC. COMPUTATION OF PER SHARE EARNINGS FULLY DILUTED COMPUTATION Years ended December 31, 1994, 1993 and 1992 (In thousands, except earnings per share data) 1994 1993 1992 -------- -------- ------- Income before cumulative effect of a change in accounting principle....... $319,665 $374,575 $357,600 Cumulative effect of a change in accounting principle................... - 8,738 - -------- -------- -------- Net income............................... $319,665 $383,313 $357,600 ======== ======== ======== Applicable common and common stock equivalent shares: Weighted average shares of common stock outstanding during the period............................ 133,155 135,257 134,305 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants.......................... 7,944 9,065 13,421 ------- -------- ------- Weighted average shares of common stock and common stock equivalents outstanding during the period.......... 141,099 144,322 147,726 ======= ======= ======= Income before cumulative effect of a change in accounting principle....... $ 2.27 $ 2.60 $ 2.42 Cumulative effect of a change in accounting principle................. - .06 - ------- ------- ------- Net income............................. $ 2.27 $ 2.66 $ 2.42 ======= ======= =======