EXHIBIT 11 ANSAN PHARMACEUTICALS,INC. (A DEVELOPMENT STAGE COMPANY) STATEMENT OF COMPUTATION OF NET LOSS PER SHARE THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, 1997 1996 1997 1996 ----------- ----------- ----------- ----------- Net Loss $ (506,358) $ (403,684) $(1,145,716) $ (811,619) =========== =========== =========== =========== Weighted average shares of Common Stock outstanding 2,851,954 2,771,645 2,850,920 2,769,905 Escrow Shares (365,983) (363,760) (365,983) (363,760) ----------- ----------- ----------- ----------- Shares used in calculating net loss per share 2,485,971 2,407,885 2,484,937 2,406,145 =========== =========== =========== =========== Net loss per share $ ($0.20) $ ($0.17) $ ($0.46) $ ($0.34) =========== =========== =========== ===========