UMC [UNITED MICROELECTRONICS] 6-K: www.umc.com Description 99.1 Announcement on 2020/08/07: Announcement of
[www.umc.com Description 99.1 Announcement on 2020/08/07: Announcement of the completion of the 21th stock buy-back plan by the company 99.2 Announcement on 2020/08/11: Represent major subsidiary HEJIAN TECHNOLOGY (SUZHOU) CO., LTD to announce the resolution of Extraordinary Shareholders’ Meeting 99.]