Huangpu Announces Adjustment of Conversion Prices for Third Domestic Secured and Fourth Unsecured Convertible Bonds

Release Date: July 14, 2026 Statement Date: July 13, 2026 Statement Time: 15:40:04 Company Code: 2528 Company Name: Huangpu Subject: Announcement of Adjustment to Conversion Prices for the Company's Third Domestic Secured and Fourth Unsecured Convertible Bonds Applicable Clause: Item 51 Event Date: July 13, 2026

1. Event Date: 07/13/2026 2. Company Name: Huangpu Construction 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 issuance of new shares from retained earnings capital increase, the conversion prices are adjusted in accordance with the issuance and conversion regulations of the Company's third domestic secured and fourth unsecured convertible bonds. 6. Response Measures: According to Article 11 of the issuance and conversion regulations of the Company's third domestic secured and fourth unsecured convertible bonds, effective from August 3, 2026 (ex-rights benchmark date), the conversion price of the third domestic secured convertible bond (25283) will be adjusted from NT$40.1 to NT$34.9; the conversion price of the fourth unsecured convertible bond (25284) will be adjusted from NT$38.7 to NT$33.7. 7. Other Matters to be Stated: None.