1 EXHIBIT 11 IPL SYSTEMS, INC. ----------------- COMPUTATION OF NET (LOSS) INCOME PER COMMON SHARE ------------------------------------------------- (Thousands of dollars except per share amounts) Three Months Ended --------------------------- March 31, March 31 1997 1996 ---------- --------- Primary - ------- Net (loss) income $ (1,997) $ 230 ---------- ---------- Weighted average shares outstanding 5,633,819 5,590,555 Dilutive stock options based on the treasury stock method using average market price for the period -- 149,059 ---------- ---------- Common shares used in calculation of net (loss) income per share 5,633,819 5,739,614 ========== ========== Net (loss) income per share $ (0,35) $ 0.04 ========== ========== Fully Diluted - ------------- Net (loss) income $ (1,997) $ 230 ---------- ---------- Weighted average shares outstanding 5,633,819 5,590,555 Dilutive stock options based on the treasury stock method using the higher of average or period end market price (A) -- 246,343 ---------- ---------- Common shares used in calculation of net (loss) income per share 5,633,819 5,836,898 ========== ========== Net (loss) income per share $ (0.35) 0.04 ========== ========== (A) This calculation is presented in accordance with Item 601 of Regulation S-X although it is not required by Paragraph 14 of APB Opinion No. 15. 15