Delta Electronics Announces New Vice Chairman for Subsidiary Taiyu Technology

Disclosure Date: June 25, 2026 Statement Date: June 24, 2026 Statement Time: 16:04:25 Company Code: 8163 Company Name: Delta Electronics Subject: Announcement on behalf of subsidiary Taiyu Technology Co., Ltd. regarding the board's selection of a new Vice Chairman Applicable Clause: Clause 6 Event Date: June 24, 2026

Details: 1. Board resolution or change date: June 24, 2026 2. Position (enter Chairman or General Manager): Vice Chairman 3. Former incumbent's name: Not applicable 4. Former incumbent's resume: Not applicable 5. New appointee's name: Hu Shao-Rong 6. New appointee's resume: General Manager of Taiyu Technology Co., Ltd. 7. Nature of change (select from 'resignation', 'dismissal', 'end of term', 'job reassignment', 'redundancy', 'retirement', 'deceased', or 'new appointment'): New appointment 8. Reason for change: New appointment 9. Effective date of new appointment: June 24, 2026 10. Other matters to be disclosed: None

This significant information simultaneously qualifies as a matter under Article 7, Clause 6 of the Enforcement Rules of the Securities and Exchange Act that may have a material impact on shareholder rights or securities prices, as the subject entity is a publicly issued company. No additional disclosures are required.