2524 Jingcheng: Chairman Tsai Tien-Tsai Re-elected

Release Date: June 28, 2026 Statement Date: June 27, 2026 Statement Time: 24:21 Company Code: 2524 Company Name: Jingcheng

Subject: Announcement of the Re-election of Mr. Tsai Tien-Tsai as Chairman by the Board of Directors Applicable Clause: Clause 6 Event Date: June 26, 2026

Details: 1. Board resolution or change date: June 26, 2026 2. Position type (Chairman or CEO): Chairman 3. Former incumbent's name: Tsai Tien-Tsai 4. Former incumbent's resume: Chairman, Jingcheng Construction Co., Ltd. 5. New appointee's name: Tsai Tien-Tsai 6. New appointee's resume: Chairman, Jingcheng Construction Co., Ltd. 7. Nature of change (select from 'resignation', 'dismissal', 'end of term', 'duty adjustment', 'redundancy', 'retirement', 'deceased', or 'new appointment'): End of term 8. Reason for change: Full board re-election due to the conclusion of term 9. Effective date of new appointment: June 26, 2026 10. Additional disclosures (if the entity is a publicly issued company, this material information also meets Article 7, Clause 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters significantly affecting shareholder rights or securities prices): None.