【Tayang】Announcement of personnel change for the company's internal audit supervisor

1.Type of personnel change (please enter spokesperson, acting spokesperson, important operational manager (e.g., CEO, COO, CMO, CSO, etc.), financial manager, accounting manager, corporate governance manager, information security officer, R&D manager, internal audit supervisor or litigation and non-litigation agent): Internal Audit Supervisor 2.Date of change: 115/05/13 (May 13, 2026) 3.Name, position, and brief resume of the former incumbent: Chen Zi-Yin / The company's Internal Audit Supervisor 4.Name, position, and brief resume of the new incumbent: To be appointed. 5.Nature of change (please enter "resignation", "position adjustment", "severance", "retirement", "death", "new appointment" or "dismissal"): Resignation 6.Reason for change: Personal career planning 7.Effective date: 115/05/13 (May 13, 2026) 8.Other matters that should be specified: The duties of the Internal Audit Supervisor will be temporarily performed by the company's acting auditor. The new Internal Audit Supervisor will be announced separately after approval by the Audit Committee and the Board of Directors.