March 22, 2013
$411,000,000
Common Stock OfferingCo-Manager
March 15, 2013
$201,000,000
Convertible Senior NotesCo-Manager
August 18, 2011
$84,500,000
Common Stock Offering Co-Manager
January 11, 2011
$17,250,000
December 16, 2010
$56,100,000