X0306 4 2016-03-10 0 0001350102 Ascent Solar Technologies, Inc. ASTI 0001546831 BIAO XU 12300 GRANT STREET THORNTON CO 80241 1 0 0 0 No securities are beneficially owned. 0 D Common Stock Option (Right toi Buy) 0.06 2016-03-10 4 A 0 100000 0.00 A 2016-03-10 2016-03-10 Common Stock 100000 200000 D Does not include shares held by TFG Radiant Investment Group Ltd. ("TFG Radiant"), which is the Issuer's largest stockholder. Mr. Xu is an investor in TFG Radiant and disclaims beneficial ownership of shares held by TFG Radiant (except to the extent of his pecuniary interest therein). The stock options vest in equal monthly installments beginning on April 10, 2016, such that the stock options are fully vested as of March 10, 2019. Xu Biao (aka Winston Xu) is a Board designee of TFG Radiant pursuant to the Amended and Restated Stockholders' Agreement between the Issuer and TFG Radiant, dated December 30, 2011. /s/ James H. Carroll, Attorney-in-Fact 2016-03-14