1 EXHIBIT 11 HARBINGER CORPORATION COMPUTATION OF EARNINGS PER SHARE Three Months Ended Nine Months Ended September 30, September 30, ---------------------------- ---------------------------- PRIMARY 1997 1996 1997 1996 ------------ ------------ ------------ ------------ Weighted average common stock outstanding 20,646,000 18,597,000 19,587,000 18,396,000 Net effect of dilutive stock options and warrants - based on the treasury method -- -- -- -- ------------ ------------ ------------ ------------ Total 20,646,000 18,597,000 19,587,000 18,396,000 ============ ============ ============ ============ Loss before extraordinary item applicable to common shareholders $ (9,698,000) $ (1,233,000) $(20,804,000) $(11,751,000) Extraordinary loss on debt extinguishment -- -- (2,419,000) -- ------------ ------------ ------------ ------------ Net loss applicable to common shareholders $ (9,698,000) $ (1,233,000) $(23,223,000) $(11,751,000) ============ ============ ============ ============ Loss per share applicable to common shareholders before extraordinary item $ (0.47) $ (0.07) $ (1.07) $ (0.64) Extraordinary loss per share on debt extinguishment -- -- (0.12) -- ------------ ------------ ------------ ------------ Net loss per share applicable to common shareholders $ (0.47) $ (0.07) $ (1.19) $ (0.64) ============ ============ ============ ============ Computational note: In connection with the computations for all periods presented, all common share equivalents have been excluded because their impact on the Company's net loss per share is antidilutive. FORM 10-Q PAGE 22 2 EXHIBIT 11 HARBINGER CORPORATION COMPUTATION OF EARNINGS PER SHARE Three Months Ended Nine Months Ended September 30, September 30, ---------------------------- ---------------------------- FULLY DILUTED 1997 1996 1997 1996 ------------ ------------ ------------ ------------ Weighted average common stock outstanding 20,646,000 18,597,000 19,587,000 18,396,000 Net effect of dilutive stock options and warrants - based on the treasury method -- -- -- -- ------------ ------------ ------------ ------------ Total 20,646,000 18,597,000 19,587,000 18,396,000 ============ ============ ============ ============ Loss before extraordinary item applicable to common shareholders $ (9,698,000) $ (1,233,000) $(20,804,000) $(11,751,000) Extraordinary loss on debt extinguishment -- -- (2,419,000) -- ------------ ------------ ------------ ------------ Net loss applicable to common shareholders $ (9,698,000) $ (1,233,000) $(23,223,000) $(11,751,000) ============ ============ ============ ============ Loss per share applicable to common shareholders before extraordinary item $ (0.47) $ (0.07) $ (1.07) $ (0.64) Extraordinary loss per share on debt extinguishment -- -- (0.12) -- ------------ ------------ ------------ ------------ Net loss per share applicable to common shareholders $ (0.47) $ (0.07) $ (1.19) $ (0.64) ============ ============ ============ ============ Computational note: In connection with the computations for all periods presented, all common share equivalents have been excluded because their impact on the Company's net loss per share is antidilutive. FORM 10-Q PAGE 23