【In Win】Supplementary Announcement Regarding the Board of Directors' Resolution to Convene the 2026 Annual General Meeting (New Discussion Item)

1. Date of board resolution: 2026/05/07 2. Date of shareholders' meeting: 2026/06/23 3. Location of shareholders' meeting: No. 108, Section 1, Nankan Road, Luzhu District, Taoyuan City (Monarch Plaza Hotel) 4. Method of convening shareholders' meeting (physical/video-assisted/video): Physical shareholders' meeting 5. Agenda Item 1: Reporting matters (1): 2025 business and financial reports (2): Audit Committee's review report on 2025 financial statements (3): Report on the company's external endorsements and guarantees (4): Report on the company's operations for lending funds to others (5): Report on the execution of the company's first and second domestic unsecured convertible corporate bonds (6): Report on the company's allocation of employee and director remuneration for 2025 6. Agenda Item 2: Approval matters (1): Approval of 2025 financial statements (2): Approval of 2025 profit distribution plan 7. Agenda Item 3: Discussion matters (1): Proposal to revise certain articles of the company's "Procedures for Acquisition or Disposal of Assets" (2): Proposal for the company to distribute cash dividends from capital surplus. 8. Extraordinary motions: None 9. Book closure start date: 2026/04/25 10. Book closure end date: 2026/06/23 11. Other matters to be specified: None