Pinnacle Airlines Corp., which provides regional flights for Delta Airlines Inc. and United Continental Holdings Inc., sought bankruptcy protection after costs rose and revenue declined.
W.R. Grace & Co. , a producer of catalysts used in oil refining, said the amount it will need to borrow to exit almost a decade of bankruptcy dropped to $600 million after its cash holdings swelled.
TerreStar Networks Inc. , a provider of mobile and Internet communications services, filed for bankruptcy with a restructuring plan backed by EchoStar Corp. , its largest secured creditor.
Midwest Banc Holdings Inc. filed for Chapter 11 bankruptcy protection in the U.S.
General Motors Co. filed for an initial share offering that will mark the return of what was once the world’s largest automaker to public markets a year after it was bailed out by the government.