1 EXHIBIT 11.1 TEKELEC STATEMENT OF COMPUTATION OF EARNINGS PER SHARE THREE MONTHS ENDED NINE MONTHS ENDED PRIMARY SEPTEMBER 30, SEPTEMBER 30, -------------------- ----------------- (thousands, except per share data) 1996 1995 1996 1995 ---- ---- ---- ---- Net income (loss) . . . . . . . . . . . $ 275 $ 2,560 $(5,105) $ 6,078 ======= ======= ======= ======= Basis for computation of primary earnings per common and common equivalent share: Weighted average number of shares outstanding during period . . . . . . . 11,844 11,457 11,733 10,180 Weighted average (incremental) common share equivalent after considering the effects of options exercised and canceled during the period and after assumed repurchase of treasury shares--treasury stock method . . . . . . . . . . . . . . 792 1,596 --- 1,619 ------- ------- ------- ------- 12,636 13,053 11,733 11,799 ======= ======= ======= ======= Earnings (Loss) per share . . . . . . . $ 0.02 $ 0.20 $ (0.44) $ 0.52 ======= ======= ======= ======= THREE MONTHS ENDED NINE MONTHS ENDED FULLY DILUTED SEPTEMBER 30, SEPTEMBER 30, -------------------- ----------------- (thousands, except per share data) 1996 1995 1996 1995 ---- ---- ---- ---- Net income (loss) . . . . . . . . . . . $ 275 $ 2,560 $(5,105) $ 6,078 ======= ======== ======= ======= Basis for computation of fully diluted earnings per common and common equivalent share: Weighted average number of shares outstanding during period . . . . . . . 11,844 11,457 11,733 10,180 Weighted average (incremental) common share equivalent after considering the effects of options exercised and canceled during the period and after assumed repurchase of treasury shares -- treasury stock method . . . . . . . . . . . . . . 1,002 1,597 --- 1,675 ------- -------- ------- ------- 12,846 13,054 11,733 11,855 ======= ======== ======= ======= Earnings (Loss) per share . . . . . . . $ 0.02 $ 0.20 $ (0.44) $ 0.51 ======= ======== ======== ======= TEKELEC