Sinopower: Announcement by Subsidiary JOYSTAR INTERNATIONAL CO., LTd of Acquiring Private Placement Securities VTeam Siegfried Supply Chain Finance Fund

1. Name and nature of the target (if preferred shares, the agreed issuance conditions for preferred shares, such as dividend rate, should also be specified): VTeam Siegfried Supply Chain Finance Fund private placement securities 2. Date of occurrence of the event: 2026/04/24 3. Quantity of transaction units, price per unit, and total transaction amount: (A) Transaction quantity: Not applicable (B) Price per unit: Not applicable (C) Total transaction amount: US$4,400,000 4. Counterparty of the transaction 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): (A) Counterparty: Siegfried Asset Management Limited (B) Relationship with the company: Non-related party 5. If the counterparty is a related party, the reasons for selecting the related party as the transaction counterparty and the previous owner of the transfer, the relationship between the previous owner and the company and the counterparty, the date of the previous transfer, and the transfer amount should also be announced: Not applicable 6. If the owner of the securities has been a related party of the company within the last five years, the date and price of the related party's acquisition and disposal, and the relationship with the company at the time of the transaction should also be announced: Not applicable 7. Relevant matters concerning the disposal of creditor's rights (including the type of collateral attached to the disposed creditor's rights, and if the disposed creditor's rights belong to related party creditor's rights, the name of the related party and the book value of the disposed related party's creditor's rights should also be announced): Not applicable 8. Disposal gain (or loss) (not applicable for acquisition of securities) (for deferred items, the recognition status should be listed): Not applicable 9. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: As stipulated in the subscription agreement 10. Decision-making method for this transaction, basis for price determination, and decision-making unit: (A) Decision-making method for the transaction, basis for price determination: As stipulated in the subscription agreement (B) Decision-making unit: Approved by the Chairman of the subsidiary on 2026/4/24 11. Net asset value per share of the acquired or disposed securities target company: Not applicable 12. The difference between the private placement reference price and the transaction amount per share of the securities target company reaches 20% or more: Not applicable 13. As of now, the quantity, amount, shareholding ratio, and restricted rights (e.g., pledge status) of cumulative holdings of these transaction securities (including this transaction): JOYSTAR INTERNATIONAL CO., LTd holdings of these transaction securities: (A) Quantity: Not applicable (B) Total cumulative holding amount: US$27,014,240 (C) Shareholding ratio: Not applicable (D) Restricted rights: None 14. As of now, the proportion of private placement securities investment (including this transaction) to the company's total assets and equity attributable to owners of the parent company in the latest financial report, and the working capital amount in the latest financial report: Subsidiary's private placement securities investment: (A) Proportion to the parent company's latest individual financial statement total assets: 4.39% (B) Proportion to the latest consolidated financial statement equity attributable to owners of the parent company: 7.55% (C) Parent company's latest individual financial statement working capital: NT$-581,744 thousand 15. Manager and brokerage fees: None 16. Specific purpose or use of acquisition or disposal: Financial investment 17. Opinions of dissenting directors on this transaction: Not applicable 18. This transaction is a related party transaction: No 19. Date of Board of Directors approval: Not applicable (non-related party transaction) 20. Date of supervisor approval or audit committee consent: Not applicable (non-related party transaction) 21. Accountant issued an unreasonable opinion on this transaction: No 22. Name of accounting firm: Bingcheng United CPA Firm 23. Name of accountant: Zhang Chun-Hsiu 24. Accountant's license number: Kaohsiung CPA Certificate No. 1021 25. Other matters to be specified: The subsidiary does not have insufficient funds, yet it acquired securities.