CAPEX spending in 2Q18 was US$131 million, bringing first half 2018 capital expenditures to US$326 million. Full year 2018 CAPEX plan is budgeted for US$1.1 billion.

⁴ _{Estimated capacity numbers are based on calculated maximum output rather than designed capacity. The actual capacity numbers may differ depending upon equipment delivery schedules, pace of migration to more advanced process technologies, and other factors affecting production ramp-up.}

Third Quarter of 2018 Outlook & Guidance

Quarter-over-Quarter Guidance:

• Wafer Shipments: To remain flat
• ASP in USD: Marginal increase
• Profitability: Gross profit margin will be in the mid-teens % range
• Foundry Segment Capacity Utilization: Low 90% range
• 2018 CAPEX for Foundry Segment: US$1.1 billion

Recent Developments / Announcements

Jul. 3, 2018							Fujian Intermediate People's Court of China Rules in Favor of UMC in Patent Infringement Lawsuits Against Micron
Jun. 29, 2018							UMC Board Approves 100% Acquisition of MIFS Fab from Fujitsu as Part of Global Manufacturing Strategy
Jun. 12, 2018							UMC Shareholders Elect 14(th) Term of Directors at Annual Shareholders Meeting
May 29, 2018							UMC Earns Highest Ranks in Corporate Governance Evaluation for 4th Consecutive Year
May 24, 2018							UMC Holds 2018 China Technology Forum
Apr. 26, 2018							UMC Files Form 20-F for 2017 with US Securities and Exchange Commission
Apr. 25, 2018							UMC 1Q 2018 Financial Results

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