[CSBC] Board of Directors Resolves to Convene the 115th Shareholders' Meeting (Updated Announcement)

1. Date of Board Resolution: 2026/05/11 2. Date of Shareholders' Meeting: 2026/06/25 3. Location of Shareholders' Meeting: No. 3, Zhonggang Road, Xiaogang District, Kaohsiung City (CSBC Administration Building Grand Auditorium) 4. Method of Shareholders' Meeting (Physical Shareholders' Meeting / Video-Assisted Shareholders' Meeting / Virtual Shareholders' Meeting): Physical Shareholders' Meeting 5. Reason for Convening 1: Matters for Report (1): 2025 Annual Business Report. (2): 2025 Annual Business Audit Committee Review Report. (3): Report on the distribution of remuneration to employees and directors in 2025. (4): Report on the company's director remuneration for 2025. (5): Report on the company's losses exceeding one-half of its paid-in capital. (6): Report on the company's '2026 Sustainable Development Strategic Action Plan'. (7): Report on the '2025 Sound Operations Plan Execution Status and Benefits Achievement of Major Capital Expenditures and Long-Term Equity Investment Projects'. 6. Reason for Convening 2: Matters for Approval (1): 2025 Annual Business Report and Financial Statements. (2): 2025 Loss Offset Proposal. 7. Reason for Convening 3: Matters for Discussion (1): Amendment to the Company's 'Rules of Procedure for Shareholders' Meetings'. 8. Reason for Convening 4: Election Matters (1): By-election of one Independent Director for the 19th term. 9. Provisional Motions: 10. Record Closing Start Date: 2026/04/27 11. Record Closing End Date: 2026/06/25 12. Other Matters to be Noted: This year's (2026) Annual Shareholders' Meeting will utilize electronic voting as one of the channels for shareholders to exercise their voting rights.