EPISTAR : Announcement of the reassign the Juridical Person Director representative.

1.Date of occurrence of the change:2017/06/27

2.Name of juristic-person director/ supervisor:

United Microelectronics Corp.

3.Name and resume of the replaced person:

Po-Wen Yen,

Chief Executive Officer and Director of United Microelectronics Corp.

4.Name and resume of the replacement:

SC Chien,

General Manager of United Microelectronics Corp.

5.Reason for the change:

Po-Wen Yen, has retired, reassign the representative.

6.Original term (from __________ to __________):2016/06/17~2019/06/16

7.Effective date of the new appointment:2017/06/27

8.Any other matters that need to be specified:None.