$Ascent Solar Technologies(ASTI)$ 8-K - Current report Filed: 2017-12-20 AccNo: 0001350102-17-000094 Size: 171 KBItem 1.01: Entry into a Material Definitive AgreementItem 3.02: Unregistered Sales of Equity SecuritiesItem 9.01: Financial Statements and Exhibits 网页链接