【UPI Semiconductor】Board Approves Subscription Limit for Subordinated Corporate Bonds Issued by Domestic Life Insurance Company

1. Date of occurrence of the event: 2026/05/04 2. Company name: UPI Semiconductor Corp. 3. Relationship with the company (please enter "parent company" or "subsidiary"): Parent company 4. Mutual shareholding ratio: Not applicable 5. Reason for occurrence: The company's board of directors approved a subscription limit for subordinated corporate bonds issued by a domestic life insurance company. The company will subscribe to subordinated corporate bonds, either in one lump sum or in installments, within a limit of NT$2 billion. The investment plan's execution period is until 2026/12/31. 6. Countermeasures: None 7. Other matters to be specified (If the subject of the event or resolution is a public offering company or above, this material information also complies with Article 7, Paragraph 9 of the Enforcement Rules of the Securities Exchange Act, which states matters that have a significant impact on shareholders' equity or securities prices): None