[Puan] Announcement of Personnel Changes for Financial Manager, Accounting Manager, Corporate Governance Officer, and Acting Spokesperson

1. Type of personnel change (please enter spokesperson, acting spokesperson, important operational executive (e.g., CEO, COO, CMO, CSO, etc.), financial manager, accounting manager, corporate governance officer, chief information security officer, R&D manager, internal audit manager, or litigation/non-litigation agent): Financial Manager, Accounting Manager, Corporate Governance Officer, and Acting Spokesperson 2. Date of change: 2026/05/07 3. Name, position, and brief resume of former personnel: Liu Shu-Hua / Financial Manager, Accounting Manager, Corporate Governance Officer, and Acting Spokesperson of the company 4. Name, position, and brief resume of new personnel: Financial Manager, Accounting Manager, and Corporate Governance Officer: Chen Ching-Tung / Assistant General Manager of the company Acting Spokesperson: Li Chin-Hsi / Senior Manager of the Product Planning Department of the company 5. Status of change (please enter 'resignation', 'position adjustment', 'layoff', 'retirement', 'death', 'new appointment', or 'dismissal'): Retirement 6. Reason for change: Retirement 7. Effective date: 2026/05/07 8. Other matters that should be specified: This case was approved by the Board of Directors on May 7, 2026.