Type	Name	Date
Registration rights agreement	Registration Rights Agreement, by and among the Company and the Buyers named therein	05/16/2012
Securities purchase agreement	Securities Purchase Agreement, by and among the Company and the Buyers named therein	05/16/2012
Underwriting agreement	Underwriting Agreement	09/16/2011
Underwriting agreement	Underwriting Agreement	11/19/2010
Underwriting agreement	Underwriting Agreement	04/23/2010
Underwriting agreement	Underwriting Agreement	03/04/2010
Underwriting agreement	Underwriting Agreement	01/21/2010