[ELAN] The Company's Q1 2026 Consolidated Financial Report and Q2 2026 Business Outlook

1. Date of occurrence: June 8, 2026 (115/06/08) 2. Company name: ELAN Microelectronics Corporation 3. Relationship with the Company (please enter “the Company” or “subsidiary”): The Company 4. Shareholding ratio: Not applicable 5. Reason for occurrence: Not applicable 6. Countermeasures: Not applicable 7. Other matters to be stated (if the subject of the event or resolution is a public company, this material information also complies with Article 7, Section 9 of the Securities and Exchange Act Enforcement Rules, which has a material impact on shareholders’ equity or securities prices): The Company announced its Q1 2026 consolidated financial report and Q2 2026 business outlook at the investor conference today (8th).

Q1 2026 Consolidated Financial Report: • Consolidated revenue: NT$3.225 billion, QoQ +12.8%, YoY +3.4% • Gross margin: 47.7%, down 1.6 ppts QoQ, down 2.4 ppts YoY • Operating income: NT$779 million, QoQ +17.9%, YoY -0.8% • Net income attributable to parent: NT$705 million, QoQ -4.1%, YoY +28.4% • Earnings per share: NT$2.46, QoQ -4.3%, YoY +28.1%

The above financial figures are based on the unaudited consolidated financial statements prepared in accordance with the International Financial Reporting Standards (IFRS) endorsed by the FSC.

Based on the assessment of current business conditions, the Company’s Q2 2026 business outlook is as follows: • Consolidated revenue is expected to range between NT$3.2 billion and NT$3.4 billion; • Gross margin is expected to range between 46.5% and 49.5%; • Operating margin is expected to range between 21.4% and 25.9%.