[Test Rite] Announcement of the Company's Accumulated Disposal of the Same Marketable Securities Exceeding NT$300 Million Within One Year

1. Securities name: Delta Electronics, Inc. 2. Transaction date: 2026/1/22~2026/4/8. 3. Date of board approval: Not applicable. 4. Other approval dates: Approval level: Chairman's approval. April 8, 2026. 5. Transaction quantity, unit price, and total transaction amount: Transaction quantity: 246,000 shares. Unit price per share: NT$1471.10. Total transaction amount: NT$361,892 thousand. 6. Disposal profit (or loss) (not applicable for acquisition of marketable securities): Disposal profit: NT$28,247 thousand. 7. Relationship with the target company: Non-related party. 8. As of now, the accumulated holding of these securities (including this transaction) in terms of quantity, amount, shareholding ratio, and restrictions on rights (e.g., pledge status): Quantity: 0 shares. Amount: NT$0 thousand. Shareholding ratio: 0.00%. Restrictions on rights: None. 9. As of now, the proportion of marketable securities investment (including this transaction) listed in Article 3 of the 'Regulations Governing the Acquisition and Disposal of Assets by Public Companies' to the company's most recent financial report's total assets and equity attributable to owners of the parent, and the amount of working capital in the most recent financial report: Proportion of total assets: 56.33%. Proportion of equity attributable to owners of the parent: 164.58%. Working capital: NT$1,574,475 thousand. 10. Specific purpose of acquisition or disposal: Capital planning. 11. Opinions of directors who expressed dissent to this transaction: Not applicable. 12. Is this transaction a related party transaction: No. 13. Counterparty and its relationship with the company: None. 14. Date of supervisor's approval or audit committee's consent: Not applicable. 15. Date of previous material information announcement on the same event: Not applicable. 16. Other matters to be specified: None.