EXHIBIT 11 DURA PHARMACEUTICALS, INC. STATEMENTS RE COMPUTATIONS OF NET INCOME PER SHARE IN THOUSANDS, EXCEPT PER SHARE AMOUNTS (UNAUDITED) THREE MONTHS ENDED NINE MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, 2000 1999 2000 1999 ----------------------------------------------------------------------- NET INCOME (LOSS) PER SHARE - BASIC Net Income (Loss) $ (98,700) $ 3,536 $ (76,801) $ 18,884 =========== ========== =========== ========== Weighted average number of common shares: Common stock 44,767 44,138 44,478 44,107 =========== ========== =========== ========== Net Income (Loss) per Share $ (2.20) $ 0.08 $ (1.73) $ 0.43 =========== ========== =========== ========== NET INCOME (LOSS) PER SHARE - DILUTED Net Income (Loss) $ (98,700) $ 3,536 $ (76,801) $ 18,884 =========== ========== =========== ========== Weighted average number of common and common equivalent shares assuming issuance of all dilutive contingent shares: Common stock 44,767 44,138 44,478 44,107 Stock options 707 905 Warrants 617 643 ----------- ---------- ----------- ---------- Total 44,767 45,462 44,478 45,655 =========== ========== =========== ========== Net Income (Loss) per Share $ (2.20) $ 0.08 $ (1.73) $ 0.41 =========== ========== =========== ==========