news release News Release Contact: Siliconware Precision Industries Co., Ltd.

No.45, Jieh Show Rd.
Hsinchu Science Park, Hsinchu Taiwan, 30056 www.spil.com.tw
Janet Chen, IR Director janet@spil.com.tw
+886-3-5795678#3675
Byron Chiang, Spokesperson byronc@spil.com.tw
+886-3-5795678#3671

ASE Takeover Response

Issued by: Siliconware Precision Industries Co., Ltd. Issued on: August 21, 2015
Taichung, Taiwan, August 21, 2015 Siliconware Precision Industries Co., Ltd. ("SPIL" or the "Company")(Taiwan Stock Exchange:2325.TT, NASDAQ:SPIL) today announced that regarding the announcement of Advanced Semiconductor Engineering, Inc.("ASE") today to propose a tender offer for SPIL's common shares and/or ADSs, the Company was not aware of such matter in advance.
The Company will take all actions in accordance with the applicable laws upon receipt of the public tender offer prospectus, and will provide a formal response, together with recommendation and explanations, to the Company's shareholders within seven (7) days.

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