3042 King Yuan Electronics: Announces Financial Information Due to Trading Alert Threshold

Release Date: July 7, 2026 Statement Date: July 6, 2026 Statement Time: 14:53:26 Company Code: 3042 Company Name: King Yuan Electronics Co., Ltd. Subject: Announcement of significant financial and business information due to securities reaching the public alert threshold on the centralized trading market, to assist investor understanding. Applicable Clause: Item 51 Event Date: July 6, 2026

Details: 1. Event Date: July 6, 2026 2. Reason: In compliance with notification from the Taiwan Stock Exchange Corporation 3. Financial and Business Information:

Last Month YoY Change(%) Last Quarter YoY Change(%) Last Four Quarters Cumulative May 2026 Q1 2026 Q2 2025 – Q1 2026 IFRS Consolidated IFRS Consolidated IFRS Consolidated Preliminary Figures Audited Figures Audited Figures ================================================================================== Revenue (NT$ millions) 1,217 +10.44% 3,339 +5.46% 13,522 Pre-tax Net Profit (NT$ millions) 207 +84.82% 553 -4.16% 2,176 Net Profit Attributable to Owners of Parent (NT$ millions) 172 +82.98% 450 -4.66% 1,783 Earnings Per Share (NT$) 0.51 +88.89% 1.32 -4.35% 5.22

4. Whether there are material events under Article 4 of the 'TSEC Procedures for Verification and Disclosure of Material Information by Listed Companies': No 5. Whether a press conference under Article 11 of the same procedures is required: No 6. Complete financial information is available on the Public Information Observation System via the following paths: (1) Recent revenue and profit/loss: Basic Information > Highlights (2) Historical monthly revenue: Business Overview > Monthly Revenue > Monthly Revenue Information (Post-IFRS) (3) Historical P&L (Audited/Reviewed): Financial Statements > Post-IFRS > Consolidated/Individual > Comprehensive Income Statement (4) Historical P&L (Voluntary Preliminary Announcements): Business Overview > Preliminary Earnings Announcements 7. Other Disclosures: None