1 EXHIBIT 11 IPL SYSTEMS, INC. COMPUTATION ON NET LOSS PER COMMON SHARE (Thousands of dollars except per share amounts) THREE MONTHS ENDED --------------------------------- SEPTEMBER 30, SEPTEMBER 30, PRIMARY 1995 1994 ------- -------------- ------------- Net loss $ (1,910) $ (2,220) ========== ========== Weighted average shares outstanding 5,522,552 5,381,519 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 5,522,552 5,381,519 ========== ========== Net loss per share $ (0.35) $ (0.41) ========== ========== FULLY DILUTED ------------- Net loss $ (1,910) $ (2,220) ---------- ---------- Weighted average shares outstanding 5,522,552 5,381,519 Dilutive stock options based on the treasury stock method using the higher of average or period end market price (A) 211,832 - ---------- ---------- Common shares used in calculation of net loss per share 5,734,384 5,381,519 ---------- ---------- Net loss per share $ (0.33) $ (0.41) ---------- ---------- <FN> (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. 14 2 EXHIBIT 11 (CONTINUED) IPL SYSTEMS, INC. COMPUTATION OF NET LOSS PER COMMON SHARE (Thousands of dollars except per share amounts) NINE MONTHS ENDED -------------------------------- SEPTEMBER 30, SEPTEMBER 30, PRIMARY 1995 1994 ------- ------------- ------------- Net loss $ (3,084) $ (5,443) ========== ========== Weighted average shares outstanding 5,429,730 5,381,519 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 5,429,730 5,381,519 ========== ========== Net loss per share $ ( 0.57) $ (1.01) ========== ========== FULLY DILUTED ------------- Net loss $ (3,084) $ (5,443) ---------- ---------- Weighted average shares outstanding 5,429,730 5,381,519 Dilutive stock options based on the treasury stock method using the higher of average or period end market price (A) 211,832 17,795 ---------- ---------- Common shares used in calculation of net loss per share 5,641,562 5,399,314 ---------- ---------- Net loss per share $ (0.55) $ (1.01) ---------- ---------- <FN> (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