⁽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.

CAPEX

CAPEX spending in 3Q22 totaled US$764 million. 2022 cash-based CAPEX budget will be US$3.0 billion.

Capital Expenditure by Year - in US$ billion
Year	2021		2020		2019		2018		2017
CAPEX		$ 1.8		$ 1.0		$ 0.6		$ 0.7		$ 1.4

2022 CAPEX Plan
8"	12"			Total
10%			90%			US$3.0 billion

Fourth Quarter 2022 Outlook & Guidance

Quarter-over-Quarter Guidance:

• Wafer Shipments: To decrease by approximately 10%
• ASP in USD: To remain flat
• Gross Profit Margin: Will be in the low-40% range
• Capacity Utilization: 90%
• 2022 CAPEX: US$3.0 billion

Recent Developments / Announcements

Aug. 24, 2022		UMC and Cadence Collaborate on Analog/Mixed-Signal Flow for 22ULP/ULL Process Technologies
Sep. 13, 2022		Avalanche Technology and UMC Announce 22nm Production of High-Density MRAM-Based Devices for Aerospace Applications

Please visit UMC’s website for further details regarding the above announcements

Conference Call / Webcast Announcement

Wednesday, October 26, 2022

Time: 5:00 PM (Taipei) / 5:00 AM (New York) / 10:00 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 3Q22 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 approximately 850,000 8-inch equivalent wafers per month. The company employs approximately 20,000 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 financial results for the third quarter of 2022; the expected wafer shipment and ASP; the anticipated annual budget; capex strategies; environmental protection goals and water management strategies; impact of foreign currency exchange rates; expected foundry capacities; the ability to obtain new business opportunities; and information under the heading “Third Quarter of 2022 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 risk factors 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.

The financial statements included in this release are prepared and published in accordance with Taiwan International Financial Reporting Standards, or TIFRSs, recognized by the Financial Supervisory Commission in the ROC, which is different from International Financial Reporting Standards, or IFRSs, issued by the International Accounting Standards Board. Investors are cautioned that there may be significant differences between TIFRSs and IFRSs. In addition, TIFRSs and IFRSs differ in certain significant respects from generally accepted accounting principles in the ROC and generally accepted accounting principles in the United States.