Siliconware Precision Industries : SPIL and ASE signed a Supplemental Agreement to Joint Share Exchange Agreement to extend the Long Stop Date of Joint Share Exchange

News Release
Contact:	Eva Chen, VP of Finance Div.
Siliconware Precision Industries Co., Ltd.	[e-mail]
No.45, Jieh Show Rd.	[phone]#1536
Hsinchu Science Park, Hsinchu	Byron Chiang, Spokesperson
Taiwan, 30056	[e-mail]
www.spil.com.tw	[phone]#3676

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SPIL and ASE signed a Supplemental Agreement to Joint Share Exchange

Agreement to extend the Long Stop Date of Joint Share Exchange

Issued by: Siliconware Precision Industries Co., Ltd.

Issued on: 2017/12/14

December 14, 2017 - Siliconware Precision Industries Co., Ltd. ("SPIL")(Taiwan Stock Exchange: 2325, NASDAQ: SPIL) and Advanced Semiconductor Engineering, Inc. (TWSE Code: 2311, NYSE Code: ASX) ("ASE") have entered into a Joint Share Exchange Agreement (the "Joint Share Exchange Agreement") on June 30, 2016, whereby ASE will file an application to establish ASE Industrial Holding Co., Ltd. ("HoldCo") by means of a statutory share exchange, and HoldCo will acquire all issued and outstanding shares of both ASE and SPIL. Upon the closing of the share exchange, SPIL and ASE will be delisted from the Taiwan Stock Exchange and become wholly-owned subsidiaries of HoldCo concurrently

(the "Joint Share Exchange"). Since SPIL and ASE only received the conditional approval on the Joint Share Exchange from the Anti-Monopoly Bureau under the Ministry of

Commerce of the Pepole's Republic China ("MOFCOM") on November 24, 2017, to accommodate the time required for closing, SPIL and ASE have signed a supplemental agreement ("Supplemental Agreement") to Joint Share Exchange Agreement extend the last day of the Joint Share Exchange from December 31, 2017 to October 31, 2018. The

Supplemental Agreement will be effective upon the approval by SPIL's and ASE's respective board of directors.

SPIL and ASE will continue with the establishment of HoldCo. It is expected that an extraordinary general meeting will be convened in February 2018 and the establishment of HoldCo will be completed by the end of April 2018. This timeline, however, is subject to the review progress of the competent authorities.

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