Taiwan Cement Adjusts Conversion Price of 112th First Overseas Unsecured Convertible Bonds

1. Date of Event: July 7, 2026 2. Company Name: Taiwan Cement Corporation 3. Relationship with Company (please enter本公司or Subsidiary):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: According to the issuance regulations of the 112th first overseas unsecured convertible bonds, the conversion price is adjusted as stipulated. 6. Response Measures: Starting from July 7, 2026 (ex-dividend base date), the conversion price of the 112th first overseas unsecured convertible bonds will be adjusted from NT$34.81 to NT$33.66 per share. 7. Other Matters to be Disclosed (if the subject of the event or resolution is a publicly issued company or above, this major information simultaneously meets the criteria under Article 7, Paragraph 9, Item 9 of the Enforcement Rules of the Securities and Exchange Act regarding matters having significant impact on shareholders' equity or securities prices): None