Sumco Corporation approved appointment of Hisashi Furuya as Representative Director, COO and President; Michiharu Takii as Representative Director, Vice Chairman at the board of directors meeting held on February 6, 2018. Hisashi Furuya at present is a Director and Executive Vice President. Michiharu Takii at present is a Representative Director, COO and President. The company also approved retirement of Harumitsu Endo as Representative Director and Executive Vice President. The company approved appointment of Kazuo Hiramoto as Representative Director and Executive Vice President. Kazuo Hiramoto at present is a Director and Senior Managing Executive Officer. Effective date is March 28, 2018.