1 ALLERGAN, INC. EXHIBIT 11 COMPUTATION OF EARNINGS PER SHARE Earnings per share of common stock, including common stock equivalents, have been computed based on the following weighted average number of shares and net earnings: Three Months Six Months Ended Ended June 30, 1994 June 30, 1994 ------------- ------------- (000's, except per share amounts) Weighted average number of shares outstanding during the period 63,214 63,513 Weighted average number of additional shares issuable in connection with dilutive stock options based upon use of the treasury stock method and average market prices 277 255 ------- ------- Weighted average number of common shares including common stock equivalents 63,491 63,768 ======= ======= Net earnings for the period $23,542 $45,709 ======= ======= Primary earnings per common share $ 0.37 $ 0.72 ======= =======