Delta Electronics (Supplementary Announcement): Subsidiary ACT Genomics Holdings Company Limited Announces Board Resolution to Increase Capital for ACT TW

1. Name and Nature of the Target (for preferred shares, the agreed issuance conditions such as dividend rate should also be indicated): Common shares of ACT TW (ACT Genomics Co., Ltd.) 2. Date of Occurrence: 2026/4/8~2026/4/8 3. Board of Directors Approval Date: January 30, 2026 4. Other Approval Date: Not applicable 5. Transaction Volume, Unit Price, and Total Transaction Amount: Transaction Unit Quantity: Approximately 125 million shares Unit Price: NT$10 Total Transaction Amount: Approximately NT$1.25 billion 6. Counterparty and its Relationship with the Company (if the counterparty is a natural person and not a related party of the company, their name may be omitted): ACT Genomics Holdings Company Limited (ACT KY) and ACT TW are both subsidiaries of the company. This case involves ACT KY planning to increase capital for its 100% subsidiary ACT TW. 7. If the counterparty is a related party, the reason for selecting the related party as the transaction object, the previous owner, the relationship between the previous owner and the company and the counterparty, the previous transfer date, and the transfer amount should also be disclosed: Not applicable 8. If the ownership of the transaction target has been held by a related party within the last five years, the acquisition and disposal dates, prices, and the relationship with the company at the time of the transaction should also be disclosed: Not applicable 9. Matters related to the disposal of receivables (including the type of collateral attached to the disposed receivables, if the disposed receivables belong to related party receivables, the name of the related party and the book value of the related party's receivables disposed of this time should also be disclosed): Not applicable 10. Disposal Gain (or Loss) (Not applicable for acquisition of securities) (for deferred items, a table should be provided to explain the recognition status): Not applicable 11. Delivery or Payment Terms (including payment period and amount), Contractual Restrictions, and Other Important Agreements: Delivery or Payment Terms: Remittance to a designated bank account Contractual Restrictions and Other Important Agreements: None 12. Decision-making Method, Reference Basis for Price Determination, and Decision-making Unit for this Transaction: Approved by the Board of Directors of the company and ACT KY 13. Net Asset Value per Share of the Acquired or Disposed Securities Target Company: -21.47 NTD 14. As of now, cumulative holdings of these securities (including this transaction): quantity, amount, shareholding ratio, and restricted rights (e.g., pledge status): Cumulative Holdings of these securities (including this transaction): Approximately 125 million shares Cumulative Holdings of these securities (including this transaction): Approximately NT$1.499 billion Cumulative Shareholding Ratio of these securities (including this transaction): 100% Restricted Rights: None 15. As of now, investment in securities (including this transaction) listed in Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" as a percentage of the company's most recent financial report's total assets and equity attributable to owners of the parent, and the amount of working capital in the most recent financial report (Note 2): Percentage of Total Assets: 70.44% Percentage of Equity Attributable to Owners of the Parent: 110.55% Working Capital Amount: NT$-10,463,518 thousand (The group's cash is sufficient to cover the transaction price of this case) 16. Broker and Brokerage Fees: Not applicable 17. Specific Purpose or Use of Acquisition or Disposal: To meet the funding needs of the subsidiary 18. Opinions of Dissenting Directors on this Transaction: None 19. This transaction is a related party transaction: Yes 20. Date of Approval by Supervisors or Audit Committee: Not applicable 21. Accountant's Unqualified Opinion on this Transaction: Not applicable 22. Name of Accounting Firm: Not applicable 23. Accountant's Name: Not applicable 24. Accountant's Practice Certificate Number: Not applicable 25. Does it involve a change in operating model: No 26. Explanation of Change in Operating Model: Not applicable 27. Transaction status with the counterparty in the past year and expected in the next year: Not applicable 28. Source of Funds: Not applicable 29. Date of previous material information disclosure on the same event: January 30, 2026 30. Other Explanations: Supplementary announcement: This case has obtained the approval letter from the Investment Commission of the Ministry of Economic Affairs, and the equivalent NTD amount and the number of common shares subscribed are calculated based on the exchange rate on the remittance date.