EXHIBIT - 11 DIODES INCORPORATED AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (Unaudited) THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------------------- ------------------------------------ 2002 2003 2002 2003 ----------------- ---------------- ---------------- --------------- BASIC Weighted average number of common shares outstanding used in computing basic earnings per share 8,176,025 8,452,129 8,170,704 8,383,444 Net income $ 1,563,000 $ 2,172,000 $ 1,772,000 $ 4,094,000 ================= ================ ================ =============== Basic earnings per share $ 0.19 $ 0.26 $ 0.22 $ 0.49 ================= ================ ================ =============== DILUTED Weighted average number of common shares outstanding used in computing basic earnings per share 8,176,025 8,452,129 8,170,704 8,383,444 Assumed exercise of stock options 698,391 1,060,137 653,321 989,063 ----------------- ---------------- ---------------- --------------- 8,874,416 9,512,266 8,824,025 9,372,507 Net income $ 1,563,000 $ 2,172,000 $ 1,772,000 $ 4,094,000 ================= ================ ================ =============== Diluted earnings per share $ 0.18 $ 0.23 $ 0.20 $ 0.44 ================= ================ ================ ===============