5534 CHANG HUNG ANNOUNCES ADJUSTMENT OF DOMESTIC 4TH UNSECURED CONVERTIBLE BOND CONVERSION PRICE

Announcement Date: August 11, 2026 Statement Date: August 10, 2026 Statement Time: 17:22:45 Company Code: 5534 Company Name: Chang Hung Construction Co., Ltd. Subject: Announcement regarding the adjustment of the conversion price of the Company's 4th domestic unsecured convertible bond (Chang Hung IV). Applicable Clause: Clause 51 Fact Date: August 10, 2026 Details: 1. Fact Date: August 10, 2026 2. Company Name: Chang Hung Construction Co., Ltd. 3. Relationship with Company (Please enter 'Company' or 'Subsidiary'): Company 4. Cross-shareholding Ratio: Not applicable 5. Reason for Occurrence: Due to the company's dividend distribution process, the conversion price is adjusted in accordance with the issuance and conversion regulations of the 4th domestic unsecured convertible bond. 6. Response Measures: (1) Implemented in accordance with Article 11 of the issuance and conversion regulations of the 4th domestic unsecured convertible bond. (2) To align with the dividend distribution, effective August 31, 2026, the conversion price of the 4th domestic unsecured convertible bond will be adjusted from NT$80.0 to NT$74.8 based on the aforementioned regulations. 7. Other Matters to be Disclosed: None.