⁽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. Capacity total figures are expressed in 8-inch equivalent wafers.

CAPEX for Foundry Segment

Capital Expenditure by Year - in US$ billion
Year	2018	2017	2016	2015	2014
CAPEX	$ 0.7	$ 1.4	$ 2.8	$ 1.9	$ 1.4
2019 CAPEX Plan 8" 12" Total 25% 75% US$1.0 billion

CAPEX spending in 2Q19 was US$131 million, leading to US$318 million in capital expenditure for the first half of 2019. Full year 2019 CAPEX is budgeted for US$1.0 billion.

Third Quarter of 2019 Outlook & Guidance

Quarter-over-Quarter Guidance:

1. Wafer Shipments: To increase by 2-4%
2. ASP in USD: To increase by 1%
3. Profitability: Gross profit margin will be in the mid-teens % range
4. Foundry Segment Capacity Utilization: high-80% range
5. 2019 CAPEX for Foundry Segment: US$1.0 billion

Recent Developments / Announcements

Jun 12, 2019 UMC Shareholders Approve NT$0.58 Cash Dividend at Annual Shareholders Meeting May 30, 2019 UMC Among Highest Ranked in Corporate Governance Evaluation for 5th Consecutive Year April 25, 2019 UMC Files Form 20-F for 2018 with US Securities and Exchange Commission April 24, 2019 UMC 1Q 2019 Financial Results

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

Conference Call / Webcast Announcement

Wednesday, July 24, 2019

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 2Q19 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 that provides advanced IC production for applications spanning every major sector of the electronics industry. UMC’s comprehensive foundry solutions enable chip designers to leverage the company’s sophisticated technology and manufacturing, which include world-class 28nm High-K/Metal Gate technology, 14nm FinFET volume production, specialty process platforms specifically developed for AI, 5G and IoT applications and the automotive industry’s highest-rated AEC-Q100 Grade-0 manufacturing capabilities for the production of ICs found in vehicles. UMC’s 11 wafer fabs are strategically located throughout Asia and are able to produce more than 600,000 wafers per month. The company employs approximately 18,500 people worldwide, with offices in Taiwan, China, Europe, Japan, Korea, Singapore, and the United States. UMC can be found on the web at http://www.umc.com.

Note from UMC Concerning Forward-Looking Statements

Some of the statements in the foregoing announcement are forward-looking within the meaning of the U.S. Federal Securities laws, including statements about introduction of new services and technologies, future outsourcing, competition, wafer capacity, business relationships and market conditions. Investors are cautioned that actual events and results could differ materially from these statements as a result of a variety of factors, including conditions in the overall semiconductor market and economy; acceptance and demand for products from UMC; and technological and development risks. Further information regarding these and other risks is included in UMC’s filings with the U.S. Securities and Exchange Commission. 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.

Safe Harbor Statements

This release contains forward-looking statements. These statements constitute “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. You can identify these forward-looking statements by use of words such as “strategy,” “expects,” “continues,” “plans,” “anticipates,” “believes,” “will,” “estimates,” “intends,” “projects,” “goals,” “targets” and other words of similar meaning. You can also identify them by the fact that they do not relate strictly to historical or current facts.

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. 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.