EXHIBIT 11 AMGEN INC. COMPUTATION OF PER SHARE EARNINGS PRIMARY COMPUTATION Years ended December 31, 1995, 1994 and 1993 (In millions, except per share data) 1995 1994 1993 ------- ------- ------- Income before cumulative effect of a change in accounting principle........ $537.7 $319.7 $374.6 Cumulative effect of a change in accounting principle.................. - - 8.7 ------ ------ ------ Net income............................... $537.7 $319.7 $383.3 ====== ====== ====== Applicable common and common stock equivalent shares: Weighted average shares of common stock outstanding during the period. 265.0 266.3 270.5 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants............................ 15.7 13.3 16.7 ------ ------ ------ Weighted average shares of common stock and common stock equivalents outstanding during the period......... 280.7 279.6 287.2 ====== ====== ====== Earnings per common share primary: Income before cumulative effect of a change in accounting principle...... $ 1.92 $ 1.14 $ 1.30 Cumulative effect of a change in accounting principle................ - - .03 ------ ------ ------ Net income............................... $ 1.92 $ 1.14 $ 1.33 ====== ====== ====== EXHIBIT 11 AMGEN INC. COMPUTATION OF PER SHARE EARNINGS FULLY DILUTED COMPUTATION Years ended December 31, 1995, 1994 and 1993 (In millions, except per share data) 1995 1994 1993 ------- ------- ------- Income before cumulative effect of a change in accounting principle........ $537.7 $319.7 $374.6 Cumulative effect of a change in accounting principle.................. - - 8.7 ------ ------ ------ Net income............................... $537.7 $319.7 $383.3 ====== ====== ====== Applicable common and common stock equivalent shares: Weighted average shares of common stock outstanding during the period. 265.0 266.3 270.5 Incremental number of shares outstanding during the period resulting from the assumed exercises of stock options and warrants............................ 20.3 15.9 18.1 ------ ------ ------ Weighted average shares of common stock and common stock equivalents outstanding during the period........ 285.3 282.2 288.6 ====== ====== ====== Earnings per common share primary: Income before cumulative effect of a change in accounting principle..... $ 1.88 $ 1.13 $ 1.30 Cumulative effect of a change in accounting principle............... - - .03 ------ ------ ------ Net income.............................. $ 1.88 $ 1.13 $ 1.33 ====== ====== ======