Total capacity in the third quarter totaled 2,308K 8-inch equivalent wafers. We foresee fourth quarter capacity will grow to 2,311K 8-inch equivalent wafers, mainly reflecting capacity increase at Fab 12X.

⁽¹⁾ One 6-inch wafer is converted into 0.5625 (6²/8²) 8-inch equivalent wafer; one 12-inch wafer is converted into 2.25 (12²/8²) 8-inch equivalent wafers. Total capacity figures are expressed in 8-inch equivalent wafers.

Capital Expenditure by Year - in US$ billion
Year		2019		2018		2017		2016		2015
CAPEX	$	0.6	$	0.7	$	1.4	$	2.8	$	1.9

2020 CAPEX Plan
8"		12"		Total
15	%	85	%	US$1.0 billion

CAPEX spending in 3Q20 was US$252 million, leading to a total of US$540 million in capital expenditure investment during the first nine months of 2020. Full year 2020 CAPEX is budgeted at US$1.0 billion.

Fourth Quarter 2020 Outlook & Guidance

Quarter-over-Quarter Guidance:

• Wafer Shipments: To increase by 1-2%
• ASP in USD: To increase by 1%
• Gross Profit Margin: To remain flat
• Capacity Utilization: mid-90% range
• 2020 CAPEX: US$1 billion

Recent Developments / Announcements
Oct 29, 2020	UMC and US Department of Justice Reach Plea Agreement on Trade Secret Case
Jul 29, 2020	UMC 2Q20 Financial Results
Please visit UMC’s website for further details regarding the above announcements

Conference Call / Webcast Announcement

Thursday, October 29, 2020

Time: 5:00 PM (Taipei) / 5:00 AM (New York) / 09:00 AM (London)

Dial-in numbers and Access Codes:
USA Toll Free:	1-866 836-0101
Taiwan Number:	02-2192-8016
Other Areas:	+886-2-2192-8016
Access Code:	UMC

A live webcast and replay of the 3Q20 results announcement will be available at www.umc.com under the “Investors / Events” section.

About UMC

UMC (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry. The company provides high quality IC production with a focus on both logic and specialty technologies to serve every major sector of the electronics industry. UMC’s comprehensive technology and manufacturing solutions include logic/RF, embedded high voltage, embedded flash, RFSOI/BCD and IATF-16949 automotive manufacturing certification for all its manufacturing facilities. UMC operates 12 fabs that are strategically located throughout Asia with a maximum capacity of more than 750,000 8-inch equivalent wafers per month. The company employs approximately 19,500 people worldwide, with offices in Taiwan, China, United States, Europe, Japan, Korea and Singapore. For more information, please visit: http://www.umc.com.

Safe Harbor Statements

This press release contains forward-looking statements within the meaning of Section 27A of the United States Securities Act of 1933, as amended, and Section 21E of the United States Securities Exchange Act of 1934, as amended, and as defined in the United States Private Securities Litigation Reform Act of 1995. These forward-looking statements include, but are not limited to, statements regarding anticipated sales for first quarter; product releases and market shares; opportunities in the 5G and IoT markets; anticipated wafer demands in market segments; execution of corporate strategies; repayment of bank loans; expected foundry capacities; the ability to obtain new business opportunities; and information under the heading “First Quarter of 2020 Outlook and Guidance.”

These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause the actual performance, financial condition or results of operations of UMC to be materially different from what is stated or may be implied in such forward-looking statements. Investors are cautioned that actual events and results could differ materially from those statements as a result of a number of factors including, but not limited to: (i) dependence upon the frequent introduction of new services and technologies based on the latest developments in the industry in which UMC operates; (ii) the intensely competitive semiconductor, communications, consumer electronics and computer industries and markets; (iii) the risks associated with international business activities; (iv) dependence upon key personnel; (v) general economic and political conditions; (vi) possible disruptions in commercial activities caused by natural and human-induced events and disasters, including natural disasters, terrorist activity, armed conflict and highly contagious diseases; (vii) reduced end-user purchases relative to expectations and orders; and (viii) fluctuations in foreign currency exchange rates. Further information regarding these and other risks is included in UMC’s filings with the United States Securities and Exchange Commission, including its Annual Report on Form 20-F. All information provided in this release is as of the date of this release and are based on assumptions that UMC believes to be reasonable as of this date, and UMC does not undertake any obligation to update any forward-looking statement as a result of new information, future events or otherwise, except as required under applicable law.