A timeline of key events at General Motors starting with its exit from bankruptcy protection last year to its filing for a stock offering:

--July 10, 2009 -- Emerges from bankruptcy protection only six weeks after filing. Becomes a private company with U.S. government as largest shareholder. Former AT&T head Ed Whitacre becomes board chairman.

--Sept. 30 -- Announces plans to shut down Saturn brand, one of several that General Motors looks to shed as it scales back to four brands from eight.

--Nov. 2 -- Government Accountability Office says GM and Chrysler will likely not be valuable enough for the Treasury Department to break even on $80 billion in investments.

--Nov. 16 -- Reports a $1.2 billion loss from July bankruptcy exit through Sept. 30.

--Dec. 1 -- CEO Fritz Henderson resigns after eight months. Whitacre named temporary chief. Whitacre later becomes permanent CEO.

--Jan. 25 -- GM agrees to sell Saab to Spyker for $74 million.

--Feb. 24 -- Announces end of Hummer brand.

--April 7 -- Reports $3.4 billion loss for the '09 fourth quarter.

--April 21 -- Repays $8.1 billion of loans to U.S. and Canadian governments.

--May 17 -- Reports first- quarter profit of $865 million, its first since 2007.

--Aug. 5 -- Says it will have 4,500 U.S. dealers, 25 percent fewer than in 2009, after completing arbitration with dealers who fought GM's attempt to sever them from the company.

--Aug. 12 -- Reports $1.3 billion profit from April through June; Whitacre announces plans to step down as GM moves toward stock sales. Board member Daniel Akerson to replace Whitacre as CEO on Sept. 1 and as chairman at the end of the year.

--Aug. 18 -- Files initial paperwork to sell stock to the public.