1718 Chung Hsin Fiber Corporation Announces Disposal of Taichung Commercial Bank Shares Exceeding NT$300 Million

Disclosure Date: July 22, 2026 Statement Date: July 21, 2026 Statement Time: 17:32:08 Company Code: 1718 Company Name: Chung Hsin Fiber Corporation Subject: Announcement of Cumulative Disposal of the Same Securities Exceeding NT$300 Million Within One Year Applicable Clause: Item 20 Event Date: July 21, 2026 Details: 1. Security Name: Ordinary Shares of Taichung Commercial Bank Co., Ltd. 2. Transaction Dates: July 17, 2026 – July 21, 2026 3. Board Approval Date: July 14, 2026 4. Other Approval Dates: Not applicable 5. Transaction Quantity, Unit Price, and Total Amount: Quantity: 18,150,000 shares Unit Price: Approximately NT$20.31 Total Amount: NT$368,647,271 6. Disposal Gain (or Loss) (Not applicable for acquisition): NT$79,668,197 7. Relationship with the Target Company: Taichung Commercial Bank Co., Ltd. is an equity-method investee of the company. 8. Cumulative Holdings of the Security (including this transaction) to Date – Quantity, Value, Ownership Percentage, and Restricted Rights (e.g., Pledges): Chung Hsin: 1,259,618,406 shares, NT$20,055,281,978, 20.92%, 592,060,000 shares pledged Pan Ya: 314,957,463 shares, NT$5,043,547,489, 5.23%, no pledge De Hsing Investment: 17,650,648 shares, NT$289,332,542, 0.29%, 4,500,000 shares pledged Chiu Chin Industrial: 10,354,498 shares, NT$207,607,685, 0.17%, 9,175,000 shares pledged 9. Proportion of Securities Investments (including this transaction) Listed Under Article 3 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies' to Total Assets and Equity Attributable to Owners of the Parent in the Latest Financial Statements, and the Amount of Working Capital: Percentage of Total Assets: 70.07% Percentage of Shareholders' Equity: 125.86% Working Capital: -NT$7,182,603,000 10. Specific Purpose of Acquisition or Disposal: Asset allocation and enhancement of capital utilization efficiency 11. Dissenting Director Opinions on This Transaction: None 12. Whether This Transaction is a Related-Party Transaction: No 13. Counterparty and Relationship with the Company: Not applicable 14. Date of Supervisor Approval or Audit Committee Consent: July 14, 2026 15. Previous Material Information Disclosure Date for the Same Event: Not applicable 16. Other Remarks: None