EXHIBIT 11 EXIDE ELECTRONICS GROUP, INC. STATEMENT OF COMPUTATION OF PER SHARE EARNINGS (in thousands, except per share data) PRIMARY Three Months Ended Nine Months Ended June 30, June 30, ------------------ ------------------ 1997 1996 1997 1996 ---- ---- ---- ---- Net income (loss) before extraordinary item $ 1,885 $(2,978) $ 3,342 $(11,556) Preferred stock dividends and accretion 342 342 1,026 409 --- --- --- --- Net income (loss) applicable to common shareholders before extraordinary item $ 1,543 $(3,320) $ 2,316 $(11,965) Extraordinary item -- -- 2,376 -- ----- ----- ----- ----- Net income (loss) applicable to common shareholders $ 1,543 $(3,320) $ (60) $(11,965) ======= ======= ======= ======== Income (loss) per share before extraordinary item $ 0.15 $ (0.33) $ 0.23 $ (1.26) Extraordinary item -- -- (0.24) -- ----- ----- ----- ----- Net income (loss) per common and equivalent share $ 0.15 $ (0.33) $ (0.01) $ (1.26) ======= ======= ======= ======== Primary Share Base: Weighted average number of common and equivalent shares outstanding 10,092 9,978 10,085 9,461 ====== ===== ====== ===== FULLY DILUTED(1) Three Months Ended Nine Months Ended June 30, June 30, ------------------ ------------------ 1997 1996 1997 1996 ---- ---- ---- ---- Income (loss) before extraordinary item $ 1,885 $(2,978) $ 3,342 $(11,556) Extraordinary item -- -- 2,376 -- ----- ----- ----- ----- Net income (loss) applicable to common shareholders $ 1,885 $(2,978) $ 966 $(11,556) ======= ======= ======= ======== Income (loss) per share before extraordinary item $ 0.15 $ (0.27) $ 0.23 $ (1.15) Extraordinary item -- -- (0.24) -- ----- ----- ----- ----- Net income (loss) per common and equivalent share $ 0.15 $ (0.27) $ (0.01) $ (1.15) ======= ======= ======= ======== Fully Diluted Share Base: Number of common shares outstanding, end of period 10,052 9,980 10,052 9,561 Assumed conversion of preferred stock 1,000 1,000 1,000 398 Weighted average number of common stock equivalents 43 64 55 79 --- --- --- --- Weighted average number of common and equivalent shares outstanding 11,095 11,044 11,107 10,038 ====== ====== ====== ====== (1) This calculation is submitted in accordance with Regulation S-K item 601 (b)(11), although it is contrary to APB Opinion No. 15 because it includes the conversion of all convertible securities, even though the conversion of certain of these securities produces an anti-dilutive effect on fully diluted earnings per share.