TOP AIR MANUFACTURING, INC. AND SUBSIDIARIES EXHIBIT 11 COMPUTATION OF EARNINGS (LOSS) PER COMMON SHARE TOP AIR MANUFACTURING, INC. AND SUBSIDIARIES EXHIBIT 11 - COMPUTATION OF EARNINGS (LOSS) PER COMMON SHARE Three Months Ended Three Months Ended August 31, August 31, 2000 1999 ------------------ ------------------ Basic: Common shares outstanding at the beginning of the period 4,954,803 4,968,957 Weighted average of common shares issued (retired) during the period -- 6,315 --------- --------- Weighted average common shares outstanding 4,954,803 4,975,272 ========= ========= Net income (loss) $(504,153) $(511,607) ========== ========= Net income (loss) per share $ (.10) $ (.10) ========== ========= Fully Diluted: Weighted average common shares outstanding 4,954,803 4,975,272 Net effect of dilutive securities: convertible debentures and employee stock options # -- -- ----------- --------- Weighted average common and common equivalent shares 4,954,803 4,975,272 =========== ========= Net income (loss) $ 504,153 $(511,607) =========== ========= Net income (loss) per share $ (.10) $ (.10) =========== ========= # The convertible debentures and stock options have not been included because they are antidilutive.