【Sinlaku】Announcement by subsidiary Continental Engineering Corporation on change of Chief Operating Officer

1. Type of personnel change (please enter spokesperson, acting spokesperson, important operational executive (e.g., CEO, COO, CMO, CSO, etc.), finance executive, accounting executive, corporate governance executive, information security executive, R&D executive, internal audit executive, or litigation/non-litigation agent): Chief Operating Officer 2. Date of change: 2026/05/04 3. Name, title, and brief resume of the former incumbent: Simon Buttery / CEO and COO of Continental Engineering Corporation 4. Name, title, and brief resume of the new incumbent: Huang Dong-kai / Senior Vice President of Architecture Division, Taiwan Business Unit, Continental Engineering Corporation 5. Status of change (please enter “resignation,” “job reassignment,” “layoff,” “retirement,” “death,” “new appointment,” or “dismissal”): Job reassignment 6. Reason for change: Job reassignment 7. Effective date: 2026/05/04 8. Other matters to be specified: None