1.Date of occurrence of the event:2010/01/15

2.Company name:Epistar Corporation

3.Relationship to the Company (please enter ”head office” or

”affiliate company”):head office

4.Reciprocal shareholding ratios:N/A

5.Cause of occurrence:

Regarding the derivative trading of 2009 Oct-Dec., the fair value of forward

outstanding position erroneously included the fair value of the contract

amount. Details are revised as follows:

Unit: NT1,000

Month:        Before revision                 After revision

(contract amount included)      (contract amount excluded)

Oct. 2009      456,025                          2,481

Nov. 2009      418,626                         -3,401

Dec. 2009      553,770                          4,545

6.Countermeasures:Information is revised and uploaded.

7.Any other matters that need to be specified:N/A