Century Steel Announces Adjustment of Conversion Price for 8th Domestic Unsecured Convertible Bonds

1. Date of Event: 2026/07/08 2. Company Name: Century Steel Structure Co., Ltd. 3. Relationship with Company (please enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: Due to the distribution of cash dividends, the conversion price of the 8th domestic unsecured convertible bonds issued by the company will be adjusted. 6. Response Measures: According to Article 11 of the Issuance and Conversion Rules for the 8th Domestic Unsecured Convertible Bonds, the conversion price shall be adjusted. Therefore, effective from the ex-dividend reference date of 2026/07/31, the conversion price will be revised from NT$232.7 to NT$223.8. 7. Other Matters to be Disclosed (if the subject of the event or resolution is a publicly issued company or above, this significant information also 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.