Type	Name	Date
Underwriting agreement	Underwriting Agreement, between the Company, SunTrust Robinson Humphrey, Inc. and JMP Securities LLC, as representatives of the several underwriters named therein	07/29/2020
Securities purchase agreement	SECURITIES PURCHASE AGREEMENT	11/20/2017
Securities purchase agreement	SECURITIES PURCHASE AGREEMENT	10/18/2013
Securities purchase agreement	SECURITIES PURCHASE AGREEMENT	10/18/2013