SUMCO Corporation announced that the meeting of the board of directors of the company was held on March 26, 2013, decided its dividend per common stock of JPY 2.00 and its dividend per class A share of JPY 2,500,000, and will propose them to the 14th General Meeting of Shareholders scheduled on April 25, 2013.

SUMCO Corporation announced that the Meeting of the Board of Directors of the company was held on March 26, 2013, decided to change its accounting period, subject to approval of proposal for partial amendments to Articles of Incorporation at the 14th General Meeting of Shareholders scheduled on April 25, 2013. The company reported the current accounting period from February 1 to January 31 of the following year and the revised accounting period from January 1 to December 31. The company's fiscal year 2013 will constitute an eleven-month transitional term between February 1, 2013 and December 31, 2013. The company revised consolidated earnings guidance for the full year ending December 31, 2013. For the full year ending December 31, 2013, the company expects net sales of JPY 192,000 million, operating income of JPY 24,000 million, ordinary income of JPY 16,000 million and net income of JPY 10,000 million or JPY 34.80 per share compared to previous forecast for the net sales of JPY 210,000 million, operating income of JPY 26,000 million, ordinary income of JPY 18,000 million and net income of JPY 12,000 million or JPY 42.19 per share. Due to change in accounting period, consolidated business forecasts for fiscal year 2013 which were announced on March 8, 2013 are revised for the eleven-month transitional period (February 1, 2013 December 31, 2013).

Sumco Corporation, Board Meeting, Mar 26, 2013. Agenda: To change its accounting period, subject to approval of proposal for partial amendment to Articles of Incorporation at the 14th General Meeting of Shareholders scheduled on April 25, 2013; and to decide its year-end dividends for fiscal year 2012.