[Huang Hsiang] Announcement of Acquisition of Securities

1. Name of the security: Delta Electronics, Inc. 2. Transaction date: April 16, 2026 ~ April 17, 2026 3. Date of board of directors resolution: Not applicable 4. Other decision date: Decision level: Chairman April 17, 2026 5. Volume, unit price, and total monetary amount of the transaction: Transaction volume: 200,000 shares Average price per share: NT$1,827.96 Total transaction amount: NT$365,591,000 6. Gain (or loss) from disposal (not applicable for acquisition of securities): Not applicable 7. Relationship with the underlying company: None 8. Cumulative number, amount, holding percentage, and status of restriction of rights (e.g., pledge) of the securities held so far (including this transaction): Volume: 407,000 shares Amount: NT$723,137,000 Holding percentage: 0.013% 9. Ratio of securities investment (including this transaction) to the total assets and equity attributable to owners of the parent company in the most recent financial statements, and the operating capital in the most recent financial statements, pursuant to Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies": Ratio to total assets: 0.661% Ratio to equity attributable to owners of the parent: 2.447% Operating capital: NT$14,739,777,000 10. Concrete purpose of acquisition or disposal: To improve the company's capital utilization efficiency 11. Any dissenting opinions of directors to the present transaction: Not applicable 12. Is this transaction a related-party transaction: No 13. The trading counterparty and its relationship to the company: Not applicable 14. Date of approval by supervisors or board of independent directors: Not applicable 15. Date of previous major announcement regarding the same event: Not applicable 16. Other matters to be specified: None