SUMCO(3436)

News Release

Oct. 31, 2018
Oct. 23, 2017
Dec. 06, 2016
Jul. 13, 2015
Apr. 02, 2015
Jun. 20, 2014
May. 13, 2013
Feb. 02, 2012
Dec. 08, 2010
Oct. 16, 2009
Assigned preliminary A+ rating to shelf reg. of SUMCO
Sep. 16, 2009
Affirmed A+ and J-1 rating on SUMCO; Revised outlook to Negative
May. 29, 2008
Upgraded rating on SUMCO to A+/Stable from A/Positive
Jun. 18, 2007
Assigned preliminary A rating to shelf registration of SUMCO
May. 29, 2007
Affirmed A on sr.debts of SUMCO and Revised outlook to Positive