1 DIODES INCORPORATED AND SUBSIDIARIES EXHIBIT - 11 COMPUTATION OF EARNINGS PER SHARE THREE MONTHS ENDED NINE MONTHS ENDED SEPTEMBER 30, SEPTEMBER 30, -------------------------- -------------------------- 1998 1997 1998 1997 ---------- ---------- ---------- --------- BASIC Weighted average number of common shares outstanding 5,047,237 4,977,033 5,022,939 4,966,256 Net income $ 554,000 $1,341,000 $2,261,000 $3,754,000 ========== ========== ========== ========== Basic earnings per share $ 0.11 $ 0.27 $ 0.45 $ 0.76 ========== ========== ========== ========== DILUTED Weighted average number of common shares outstanding 5,047,237 4,977,033 5,022,939 4,966,256 Assumed exercise of stock options 184,393 562,666 343,922 484,515 ---------- ---------- ---------- ---------- 5,231,630 5,539,699 5,366,861 5,450,771 Net income $ 554,000 $1,341,000 $2,261,000 $3,754,000 ========== ========== ========== ========== Diluted earnings per share $ 0.11 $ 0.24 $ 0.42 $ 0.69 ========== ========== ========== ========== 25