1 EXHIBIT 11 DURA PHARMACEUTICALS, INC. STATEMENTS RE: COMPUTATION OF EARNINGS PER SHARE IN THOUSANDS, EXCEPT PER SHARE DATA (1) THREE MONTHS ENDED NINE MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, ------------------- ------------------- 1995 1996 1995 1996 ------- ------- ------- ------- PRIMARY NET INCOME PER SHARE NET INCOME $ 1,767 $ 5,806 $ 4,435 $14,471 ======= ======= ======= ======= WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT SHARES: Common stock 23,816 37,543 21,938 34,258 Stock options 2,172 1,725 2,028 1,785 Warrants 4,126 2,998 3,358 2,847 ------- ------- ------- ------- Total 30,114 42,266 27,324 38,890 ======= ======= ======= ======= NET INCOME PER SHARE $ 0.06 $ 0.14 $ 0.16 $ 0.37 ======= ======= ======= ======= FULLY DILUTED NET INCOME PER SHARE: NET INCOME $ 1,767 $ 5,806 $ 4,435 $14,471 ======= ======= ======= ======= WEIGHTED AVERAGE NUMBER OF OF COMMON AND COMMON EQUIVALENT SHARES ASSUMING ISSUANCE OF ALL DILUTIVE CONTINGENT SHARES: Common stock 23,814 37,543 21,938 34,258 Stock options 2,317 1,842 2,446 1,987 Warrants 4,419 3,312 4,266 3,412 ------- ------- ------- ------- Total 30,550 42,697 28,650 39,657 ======= ======= ======= ======= NET INCOME PER SHARE $ 0.06 $ 0.14 $ 0.15 $ 0.36 ======= ======= ======= ======= (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.