 COLUMBUS, Ohio--BUSINESS WIRE--Washington Prime Group Inc. NYSE: WPG today announced that it and certain of its subsidiaries have filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the Southern District of Texas the Bankruptcy Court. The Company enters Chapter 11 after executing a restructuring support agreement the RSA with creditors, led by SVPGlobal, that hold approximately 73 of the principal amou 