United Microelectronics Corporation (NYSE:UMC) Q4 2021 Results Earnings Conference Call January 25, 2022 4:00 AM ET Company Participants Michael Lin - Head of Investor Relations Qi Dong Liu - CFO, Senior VP, Head of Corporate Governance & Company Secretary Jason Wang - President Conference Call Participants Randy Abrams - Credit Suisse Szeho Ng - China Renaissance Bruce Lu - Goldman Sachs Roland Shu - Citigroup Frank Lee - HSBC Sunny Lin - UBS Charlie Chan - Morgan Stanley Gokul Hariharan - JPMorgan Operato ...

United Microelectronics Corporation (NYSE:UMC) Q3 2021 Earnings Conference Call October 27, 2021 5:00 AM ET Company Participants Jason Wang – President Michael Lin – Head of Investor Relations Chi Tung Liu – CFO Conference Call Participants Randy Abrams – Credit Suisse Gokul Hariharan – JP Morgan Nick Gaudois – UBS Charlie Chan – Morgan Stanley Roland Shu – Citigroup Szeho Ng – China Renaissance Brett Simpson – Arete Research Bruce Lu – Goldman Sachs Frank Lee – HSBC Operator Welcome everyone to UMC's 2021 ...

United Microelectronics Corporation (NYSE:UMC) Q2 2021 Results Conference Call July 28, 2021 5:00 AM ET Company Participants Michael Lin - Head, IR Jason Wang - President Chi-Tung Liu - CFO Conference Call Participants Randy Abrams - Credit Suisse Charlie Chan - Morgan Stanley Roland Shu - Citigroup Szeho Ng - China Renaissance Nicolas Baratte - Macquarie Gokul Hariharan - JP Morgan Bruce Lu - Goldman Sachs Operator Welcome, everyone, to UMC’s 2021 Second Quarter Earnings Conference Call. [Operator Instruct ...

United Microelectronics Corporation (NYSE:UMC) Q1 2021 Earnings Conference Call April 28, 2021 5:00 AM ET Company Participants Michael Lin - Head, Investor Relations Chi-Tung Liu - Chief Financial Officer Jason Wang - President Conference Call Participants Randy Abrams - Credit Suisse Bruce Lu - Goldman Sachs Gokul Hariharan - JPMorgan Roland Shu - Citigroup Szeho Ng - China Renaissance Charlie Chan - Morgan Stanley Sunny Lin - UBS Operator Welcome, everyone, to UMC's 2021 First Quarter Earnings Conference ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 19 ...