Exhibit No. 11 CNS, INC. COMPUTATION OF NET INCOME PER SHARE OF COMMON STOCK Three months ended March 31, --------------------------- 1996 1995 ------------ ------------ NET INCOME Income from continuing operations $ 3,100,937 $ 2,253,166 Loss from discontinued operations 0 (450,404) ------------ ------------ Net income $ 3,100,937 $ 1,802,762 ============ ============ PRIMARY EARNINGS PER SHARE: Average number of common and common equivalent shares outstanding: Average common shares outstanding 17,446,000 17,057,000 Incentive stock options 709,000 461,000 Non qualified stock options 399,000 257,000 Warrants 75,000 147,000 ------------ ------------ 18,629,000 17,922,000 ============ ============ Earnings per share from continuing operations $ .17 $ .13 Loss per share from discontinued operations .00 (.03) ------------ ------------ Primary earnings per share $ .17 $ .10 ============ ============ FULLY DILUTED EARNINGS PER SHARE Average number of common and common equivalent shares outstanding: Average common shares outstanding 17,446,000 17,057,000 Incentive stock options 756,000 595,000 Non qualified stock options 426,000 328,000 Warrants 78,000 194,000 ------------ ------------ 18,706,000 18,174,000 ============ ============ Earnings per share from continuing operations $ .17 $ .12 Loss per share from discontinued operations .00 (.02) ------------ ------------ Fully diluted earnings per share $ .17 $ .10 ============ ============