1 EXHIBIT - 11 DIODES INCORPORATED AND SUBSIDIARIES COMPUTATION OF EARNINGS PER SHARE (UNAUDITED) THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------ ------------------------ 1998 1999 1998 1999 ---------- ---------- ---------- ---------- BASIC Weighted average number of common shares outstanding used in computing basic earnings per share 5,022,621 5,047,237 5,010,589 5,047,237 Net income $ 521,000 $ 825,000 $1,707,000 $1,515,000 ========== ========== ========== ========== Basic earnings per share $ 0.10 $ 0.16 $ 0.34 $ 0.30 ========== ========== ========== ========== DILUTED Weighted average number of common shares outstanding used in computing basic earnings per share 5,022,621 5,047,237 5,010,589 5,047,237 Assumed exercise of stock options 368,441 222,248 413,698 200,682 ---------- ---------- ---------- ---------- 5,391,062 5,269,485 5,424,287 5,247,919 Net income $ 521,000 $ 825,000 $1,707,000 $1,515,000 ========== ========== ========== ========== Diluted earnings per share $ 0.10 $ 0.16 $ 0.31 $ 0.29 ========== ========== ========== ========== 23