[UMC] Announcement regarding acquisition of machinery and equipment

1. Name and nature of the target: Machinery and equipment. 2. Date of event: 114/5/27 - 115/5/22. 3. Board approval date: Not applicable. 4. Other approval dates: Not applicable. 5. Transaction quantity and total amount: Quantity: 1 lot; Total amount: 1,027,730,259 TWD. 6. Counterparty and relationship: TOKYO ELECTRON LIMITED; not a related party. 7. Related party status: Not applicable. 8. History of ownership: Not applicable. 9. Disposal gain/loss: Not applicable. 10. Payment terms: Subject to order terms. No contractual restrictions. 11. Determination method: Negotiated price based on market conditions by the company's procurement approval committee. 12. Professional appraisal: Not applicable. 23. Purpose of acquisition: For production use. 25. Related party transaction: No.