1 EXHIBIT 11 DURA PHARMACEUTICALS, INC. STATEMENTS RE: COMPUTATION OF EARNINGS PER SHARE IN THOUSANDS, EXCEPT PER SHARE DATA (1) THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ---------------------- ---------------------- 1995 1996 1995 1996 ------- ------- ------- ------- PRIMARY NET INCOME PER SHARE NET INCOME ................................... $ 1,811 $ 4,609 $ 2,667 $ 8,665 ======= ======= ======= ======= WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES: Common stock ............................. 21,108 33,819 21,014 32,598 Stock options ............................ 1,913 1,933 1,909 1,955 Warrants ................................. 2,982 2,927 2,829 2,724 ------- ------- ------- ------- Total ................................. 26,003 38,679 25,752 37,277 ======= ======= ======= ======= NET INCOME PER SHARE ......................... $ 0.07 $ 0.12 $ 0.10 $ 0.23 ======= ======= ======= ======= FULLY DILUTED NET INCOME PER SHARE: NET INCOME ................................... $ 1,811 $ 4,609 $ 2,667 $ 8,665 ======= ======= ======= ======= WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES ASSUMING ISSUANCE OF ALL DILUTIVE CONTINGENT SHARES: Common stock ............................. 21,108 33,819 21,014 32,598 Stock options ............................ 2,096 1,934 2,169 2,064 Warrants ................................. 3,300 2,928 3,300 3,007 ------- ------- ------- ------- Total ................................. 26,504 38,681 26,483 37,669 ======= ======= ======= ======= NET INCOME PER SHARE ......................... $ 0.07 $ 0.12 $ 0.10 $ 0.23 ======= ======= ======= ======= (1) The per share data and weighted average number of common and common equivalents shares have been adjusted to reflect the 100% stock dividend effective July 1, 1996.