1. Security Name: Hwa Tong Common Stock 2. Transaction Date: 2026/6/1 ~ 2026/6/16 3. Board Approval Date: Not applicable 4. Other Approval Dates: Approval Level: Approved by Chairman June 16, 2026 (Minguo Year 115) 5. Transaction Quantity, Unit Price, and Total Amount: Quantity (in thousands of shares): 1,440 Unit Price (NT$): 261.58 Total Transaction Amount (NT$): 376,677,369 6. Gain (or Loss) on Disposal (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Target Company: None 8. Cumulative Holdings of the Security (including this transaction) to Date – Quantity, Amount, Ownership Percentage, and Restricted Rights (e.g., Pledge): Holdings: 960,000 shares, Amount: NT$247,405,396 Ownership Percentage: 0.08%, Restricted Rights: None 9. Proportion of Securities Investments (including this transaction) 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 Most Recent Financial Statements, and the Amount of Working Capital in the Most Recent Financial Statements: Percentage of Total Assets: 79.91% Percentage of Equity Attributable to Owners of the Parent: 114.77% Working Capital Amount: NT$8,285,327 thousand 10. Specific Purpose of Acquisition or Disposal: Investment portfolio adjustment 11. Dissenting Director Opinions on This Transaction: None 12. Whether This Transaction is a Related-Party Transaction: No 13. Counterparty and Its Relationship with the Company: Not applicable 14. Date of Supervisor Approval or Audit Committee Consent: Not applicable 15. Previous Date of Material Information Disclosure on the Same Event: Not applicable 16. Other Disclosures: On March 31, 2026 (Minguo Year 115), authorized traders were approved to conduct securities transactions in the centralized market during the second quarter of 2026.