EXHIBIT 11 MANGOSOFT, INC. AND SUBSIDIARY (A DEVELOPMENT STAGE COMPANY) COMPUTATION OF NET LOSS PER COMMON SHARE THREE MONTHS ENDED MARCH 31, 2000 AND 1999 (UNAUDITED) THREE MONTHS ENDED MARCH 31, ---------------------------- 2000 1999 --------- --------- BASIC NET LOSS PER COMMON SHARE: Net loss applicable to common shares as reported................. $ (33,870,230) $ (2,603,568) Weighted average number of common shares outstanding: Common Stock................................................ 20,130,349 136,949 ------------- ------------ Basic net loss per common share............................. $ (1.68) $ (19.01) ============= ============ DILUTED NET LOSS PER COMMON SHARE: Net loss applicable to common shares as reported................. $ (33,870,230) $ (2,603,568) Weighted average number of common shares outstanding: Common Stock................................................ 20,130,349 136,949 Effect of common stock equivalents.......................... -- -- ------------- ------------ -- Total.................................................. 20,130,349 136,949 ------------- ------------ Diluted net loss per common share........................... $ (1.68) $ (19.01) ============= ============ 20