Wonik Holdings Co., Ltd. (KOSDAQ:A030530) agreed to acquire additional 13.01% stake in Tera Semicon Corporation (KOSDAQ:A123100) for KRW 31.6 billion on February 18, 2017. Post closing of this 1.3 million shares acquisition, Wonik Holdings Co., Ltd. will hold 25.1% stake in Tera Semicon Corporation. Wonik Holdings Co., Ltd. (KOSDAQ:A030530) cancelled the acquisition of an additional 13.01% stake in Tera Semicon Corporation (KOSDAQ:A123100) on February 18, 2018.