Hwa Hsing Electronics Announces Unaudited Consolidated Financial Results for June 2026

1. Date of Event: July 9, 2026 2. Company Name: Hwa Hsing Electronics Industrial Co., Ltd. 3. Relationship to Company (please enter '本公司' or 'Subsidiary'):本公司 4. Cross-shareholding Ratio: Not applicable 5. Reason for Announcement: Announcement of unaudited consolidated financial results for June 2026 (1) Consolidated operating profit for the month (in thousands of NT dollars): 2,354 (2) Year-to-date consolidated operating profit (in thousands of NT dollars): 3,430 (3) Consolidated pre-tax profit for the month (in thousands of NT dollars): 8,170 (4) Year-to-date consolidated pre-tax profit (in thousands of NT dollars): 18,470 6. Response Measures: None 7. Other Matters to be Disclosed (if the entity involved in the event or resolution is a publicly listed company or above, this material information also qualifies as a matter under Article 7, Paragraph 9, Item 9 of the Enforcement Rules of the Securities and Exchange Act that significantly affects shareholders' rights or securities prices): (1) Consolidated net revenue for June 2026 was NT$69,942 million; consolidated cumulative net revenue from January to June 2026 was NT$398,491 million. (2) The above figures are self-calculated by the company and have not yet been audited or certified by accountants. Future financial reports, once audited by certified public accountants, will be announced and filed within the timeframes stipulated by applicable laws and regulations.