Powertech Technology Announces Summary of Today's Institutional Investor Conference

1. Date of occurrence of the event: 115/04/28 (April 28, 2026) 2. Company name: Powertech Technology Inc. 3. Relationship with the company (please enter 'the company' or 'subsidiary'): The company 4. Reciprocal shareholding ratio: Not applicable 5. Reason for the occurrence: The company today announced its group's performance at the institutional investor conference: Self-audited consolidated revenue for Q1 115 (2026) was NT$21.314 billion. Consolidated net profit after tax was NT$2.387 billion. Earnings per share (EPS) was NT$2.50. The above figures are self-audited by the company. 6. Countermeasures: Not applicable 7. Other matters that need to be specified (If the subject of the event or resolution is a public company or above, this material information also complies with Article 7, Paragraph 9 of the Enforcement Rules of the Securities and Exchange Act regarding matters that have a material impact on shareholders' equity or securities prices): None. Keywords: Material Information