1 EXHIBIT 11 IPL SYSTEMS, INC. ---------------- COMPUTATION OF NET LOSS PER COMMON SHARE ---------------------------------------- (Thousands of dollars except per share amounts) Three Months Ended ------------------ June 30, June 30, 1996 1995 ---------- ---------- Primary ------- Net income (loss) $ ( 581) $ ( 389) ---------- ---------- Weighted average shares outstanding 5,613,326 5,384,519 ---------- ---------- Dilutive stock options based on the treasury stock method using average - - market price for the period ---------- ---------- Common shares used in calculation of net loss per share 5,613,326 5,384,519 ========== ========== Net income (loss) per share $ (0.10) $ (0.07) ========== ========== Fully Diluted ------------- Net income (loss) $ (581) $ (389) ========== ========== Weighted average shares outstanding 5,613,326 5,384,519 Dilutive stock options based on the treasury stock method using the higher of average or period end market price (A) 177,089 259,342 ---------- ---------- Common shares used in calculation of net loss per share 5,790,415 5,643,861 ========== ========== Net income (loss) per share $ (0.10) $ (0.07) ========== ========== (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 2 EXHIBIT 11 (CONTINUED) IPL SYSTEMS, INC. ---------------- COMPUTATION OF NET LOSS PER COMMON SHARE ---------------------------------------- (Thousands of dollars except per share amounts) Six Months Ended ----------------- June 30, June 30, 1996 1995 ---------- ---------- Primary ------- Net loss $ (351) $ (1,174) ---------- ---------- Weighted average shares outstanding 5,602,034 5,383,319 Dilutive stock options based on the treasury stock method using average market price for the period - - ---------- ---------- Common shares used in calculation of net loss per share 5,602,034 5,383,319 ========== ========== Net loss per share $ (0.06) $ (0.22) ========== ========== Fully Diluted ------------- Net income (loss) $ (351) $ (1,174) ========== ========== Weighted average shares outstanding 5,602,034 5,383,319 Dilutive stock options based on the treasury stock method using the higher of average or period end market price (A) 163,074 303,261 ---------- ---------- Common shares used in calculation of net loss per share 5,765,108 5,687,780 ========== ========== Net income (loss) per share $ (0.06) $ (0.21) ========== ========== (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. 16