⁽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 2Q23 totaled US$0.82 billion. 2023 cash-based CAPEX budget will be US$3.0 billion.

Capital Expenditure by Year - in US$ billion
Year		2022		2021		2020		2019		2018
CAPEX	$	2.7	$	1.8	$	1.0	$	0.6	$	0.7

2023 CAPEX Plan
8"			12"			Total
10	%		90	%		US$3.0 billion

Third Quarter 2023 Outlook & Guidance

Quarter-over-Quarter Guidance:

• Wafer Shipments: Will decline by approximately 3-4%
• ASP in USD: Will increase by 2%
• Gross Profit Margin: Rising costs will erode GM by low-single digit percentage point
• Capacity Utilization: mid-60% range
• 2023 CAPEX: US$3.0 billion

Recent Developments / Announcements

Apr. 27, 2023		UMC Files Form 20-F for 2022 with US Securities and Exchange Commission
Apr. 28, 2023		UMC Among Highest Ranked in Corporate Governance Evaluation for 9th Consecutive Year
May 3, 2023		UMC Announces 40nm RFSOI Platform to Accelerate 5G mmWave Applications
May 10, 2023		DENSO and USJC Announce Mass Production Shipment of Automotive IGBT, Targeting Expanding Electric Vehicle Market
May 31, 2023		UMC Shareholders Approve NT$3.60 Cash Dividend at Annual Shareholders’ Meeting
Jul. 21, 2023		UMC Wins HR Asia 2023 Best Companies to Work for in Asia Award

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

Conference Call / Webcast Announcement

Wednesday, July 26, 2023

Time: 5:00 PM (Taipei) / 5:00 AM (New York) / 10:00 AM (London)

Dial-in numbers and Access Codes:
Taiwan Number:		02 3396 1191
Taiwan Toll Free:		0080 185 4007
USA Toll Free:		+1 866 212 5567
Other Areas:		+886 2 3396 1191
Access Code:		9509526#

A live webcast and replay of the 2Q23 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 company. The company provides high quality IC fabrication services, focusing on logic and various specialty technologies to serve all major sectors of the electronics industry. UMC’s comprehensive IC processing technologies and manufacturing solutions include logic/mixed-signal, embedded high-voltage, embedded non-volatile-memory, RFSOI and BCD. UMC has total 12 fabs in production with combined capacity of more than 850,000 8-inch equivalent wafers per month, and all of them are certified with IATF 16949 automotive quality standard. Most of UMC's 12-inch and 8-inch fabs with its core R&D are located in Taiwan, with additional ones throughout Asia. UMC is headquartered in Hsinchu, Taiwan, plus local offices in China, United States, Europe, Japan, Korea and Singapore, with worldwide total 20,000 employees. For more information, please visit: https://www.umc.com .