1.Date of the resolution by the board of directors or shareholders' meeting

or decision by the Company:2011/06/15

2.Type of ex-rights or ex-dividend (please enter: “Ex-rights”,

”Ex-dividend”, or ”Ex-rights and dividend”):Ex-dividend

3.Type and monetary amount of dividend distribution:

Cash Dividend of NT$3,841,589,480.

4.Ex-rights (ex-dividend) trading date:2011/07/14

5.Last date before book closure:2011/07/15

6.Book closure starting date:2011/07/16

7.Book closure ending date:2011/07/20

8.Ex-rights (ex-dividend) record date:2011/07/20

9.Any other matters that need to be specified:

(1)The domestic and Euro Convertible Bonds, along with the employee stock

options, are suspended for conversion and exercise:2011/06/24~2011/07/20.

(2)Date of Cash Dividend : 2011/08/18.

(3)If the actual outstanding shares on 2011/07/20 increase or decrease

due to the conversion of convertible bond  before the date,

the exercise of stock options by our employees, the new shares issuance

from cash capital reserve increase, the buy back of the Company's

outstanding shares and/or the transfer or cancellation of the Company's

treasury stock, Chairman of BOD of Epistar is authorized to adjust the

dividends based on the actual outstanding shares on 2011/07/20.