Hung Hsu-KY Announces Pricing for Private Placement of Common Shares for Fiscal Year 115

Release Date: June 23, 2026 Statement Date: June 22, 2026 Statement Time: 17:04:53 Company Code: 2243 Company Name: Hung Hsu-KY Subject: Board Resolution on Pricing for Private Placement of Common Shares for Fiscal Year 115 (Additional Agenda Item) Applicable Clause: Clause 11 Factual Date: June 22, 2026

1. Board Resolution Date: June 22, 2026 2. Type of Privately Placed Securities: Common Shares 3. Private Placement Recipients and Their Relationship with the Company: (1) The recipients of this private placement meet the criteria for specific investors as defined under Article 43-6 of the Securities and Exchange Act. (2) Confirmed Subscribers:

Subscriber Relationship with Company ------------------------------- ------------ Zhu Ying-Jie None Zhang Xiu-Wei None Zhu Ming-Wei None

(3) Rationale for Selecting Subscribers: To enhance the company’s competitive advantage, improve financial structure, and increase operational efficiency, strategic investors who can contribute to the future development of the company’s electronic components (including automotive electronics) products and markets are being introduced. (4) Expected Benefits from Subscribers: The participation of these subscribers is expected to accelerate the company’s development in electronic components (including automotive electronics), providing opportunities for stable growth.

4. Number of Privately Placed Shares: 8,000,000 shares 5. Available Private Placement Limit: Up to 40,000,000 common shares and up to 4,000 units of unsecured domestic convertible bonds. These may be issued once, in combination or separately, within one year from the shareholders’ meeting resolution, depending on market conditions and timing. 6. Basis and Reasonableness of Private Placement Price: The price for the private placement of common shares shall not be less than 80% of the higher of the following two benchmarks: (1) The simple arithmetic average of closing prices of common shares one, three, or five business days prior to the pricing date, adjusted for bonus issues and dividends, and readjusted for reverse stock splits. (2) The simple arithmetic average of closing prices of common shares over the 30 business days prior to the pricing date, adjusted for bonus issues and dividends, and readjusted for reverse stock splits. The reference price calculated under the above benchmarks is NT$28.53 per share. The final private placement price is set at NT$25 per share, equivalent to 87.63% of the reference price. 7. Use of Proceeds from Private Placement: Reinvestment 8. Reason for Not Conducting a Public Offering: Considering the timeliness and convenience of private placements, and the strategic need to introduce strategic investors for corporate development, a private placement is deemed necessary. 9. Dissenting or Reserved Opinions from Independent Directors: None 10. Actual Pricing Date: June 8, 2026 11. Reference Price: NT$28.53 per share 12. Actual Private Placement Price (or Conversion/Subscription Price): NT$25 per share 13. Rights and Obligations of Newly Privately Placed Shares: The rights and obligations of the privately placed common shares are generally the same as those of the company’s existing common shares. However, these shares and any subsequent shares distributed from them may not be resold for three years from the delivery date, except to transferees specified under Article 43-8 of the Securities and Exchange Act. After three years, they may be listed upon obtaining prior approval from the competent authority confirming compliance with listing standards and completing supplementary public offering procedures with the Financial Supervisory Commission. 14. Conversion/Exchange/Subscription Benchmark Date (if applicable): Not applicable 15. Potential Dilution of Equity (if applicable): Not applicable 16. Impact on Listed Common Share Equity Ratio (if applicable): Not applicable 17. Measures for Low Liquidity (if applicable): Not applicable 18. Other Matters to be Disclosed: (1) Period for Payment of Subscription Amount: From June 9, 2026 to June 23, 2026 (2) Benchmark Date for Newly Issued Shares from Capital Increase: June 23, 2026 (3) If revisions to the payment period or benchmark date are required due to legal requirements, regulatory requests, market conditions, changes in the external environment, or other factual needs, the Chairman is authorized to adjust these dates within the statutory 15-day payment period.