EXHIBIT 11 DURA PHARMACEUTICALS, INC. STATEMENTS RE COMPUTATIONS OF NET INCOME PER SHARE IN THOUSANDS, EXCEPT PER SHARE AMOUNTS (UNAUDITED) THREE MONTHS ENDED MARCH 31, 2000 1999 ------------------------------- NET INCOME PER SHARE - BASIC Net income $ 12,458 $ 7,766 ========= ======== Weighted average number of common shares: Common stock 44,335 44,100 ========= ======== Net income per share $ 0.28 $ 0.18 ========= ======== NET INCOME PER SHARE - DILUTED Net income $ 12,458 $ 7,766 ========= ======== Weighted average number of common and common equivalent shares assuming issuance of all dilutive contingent shares: Common stock 44,335 44,100 Stock options 1,259 910 Warrants 564 676 --------- -------- Total 46,158 45,686 ========= ======== Net income per share $ 0.27 $ 0.17 ========= ========