PART III Information about SENAO’s outstanding stock options for the years ended December 31, 2010 and 2011 was as follows: As of December 31, 2010, information about SENAO’s outstanding and exercisable options was as follows: No compensation cost was recognized under the intrinsic value method for the years ended December 31, 2009, 2010 and  2011. Had SENAO used the fair value method to recognize the compensation cost, there were no significant impact on the  consolidated net income and earnings per share. As of December 31, 2011, information about SENAO’s outstanding and exercisable options was as follows: Stock Options Outstanding 2010 2011 Number of  Options  (Thousands) Weighted Average  Exercise Price NT$ Number of  Options  (Thousands) Weighted Average  Exercise Price (NT$) Options outstanding, beginning of year 9,323 $30.92 5,103 $36.15 Options exercised (4,075) 23.40 (2,780) 33.76 Options expired (145) 37.60 (45) 40.07 Options outstanding, end of year 5,103 36.15 2,278 38.85 Options exercisable, end of year 3,719 2,278 Options Outstanding Options Exercisable Range of Exercise Price  (NT$) Number of Options  (Thousand) Weighted Average  Remaining  Contractual Life  (Years) Weighted Average  Exercise Price (NT$) Number of Options (Thousand) Weighted Average  Exercise Price (NT$) $  12.4 -1,061 1.33 $  12.40 1,061 $12.40 13.5 30 0.92 13.50 30 13.50 $  42.6 4,012 2.92 42.60 2,628 42.60 5,103 2.58 36.15 3,719 33.75 Options Outstanding Options Exercisable Range of Exercise Price  (NT$) Number of Options  (Thousand) Weighted Average  Remaining  Contractual Life  (Years) Weighted Average  Exercise Price (NT$) Number of Options (Thousand) Weighted Average  Exercise Price (NT$) $  12.1 280 0.32 $12.10 280 $12.10 42.6 1,998 1.92 42.60 1,998 42.60 2,278 1.72 38.85 2,278 38.85 F-39