UPDATE 3-Greenlight says documents show GM tried to undermine dual-share plan

May 4 (Reuters) - Greenlight Capital escalated its battle against General Motors Co on Thursday, posting credit ratings documents that it said the automaker inappropriately changed to undermine the hedge fund's proposal to create two classes of GM stock.

by reutersCOMPANYNEWS via Endless Supplies .Biz - News