Exhibit 11 COMPUDYNE CORPORATION COMPUTATION OF NET INCOME PER COMMON SHARE (In Thousands, Except for Per Share Data) (Unaudited) Three Months Ended September 30, Average Shares Outstanding 1995 1994 1. Average number of common shares outstanding 1,750 1,561 2. Adjusted weighted average stock options - 65 3. Adjusted weighted average number of common stock warrants outstanding - 129 standing 1,750 1,755 Net Income (Loss) 4. Income (loss) from continuing operations $ 68 $ 139 5. Loss from discontinued operations (106) - Net Income (Loss) $ (38) $ 139 Net Income (Loss) Per Share 6. Income (loss) per common share from continuing operations $ .04 $ .08 7. Loss per common share from discontinued operations (.06) - Net income per share $ (.02) $ .08