Type	Name	Date
Securities purchase agreement	Securities Purchase Agreement	05/18/2020
Securities purchase agreement	Securities Purchase Agreement	06/19/2019
Registration rights agreement	Registration Rights Agreement	04/05/2016
Securities purchase agreement	Purchase Agreement	04/05/2016
Underwriting agreement	Underwriting Agreement	10/27/2015
Underwriting agreement	Underwriting Agreement	03/20/2014
Underwriting agreement	Underwriting Agreement	12/06/2012