Wistron Board Approves Capital Increase for Subsidiary WisLab EMS Corporation (Short Name: WisLab)

1. Name and nature of the subject matter (for preferred shares, specify issuance terms such as dividend rate):
Equity in WisLab EMS Corporation

2. Date on which the fact occurred: June 26, 2026 ~ June 26, 2026

3. Date of board approval: June 26, 2026 (Republic Era Year 115)

4. Other approval dates: Not applicable

5. Transaction quantity, unit price, and total transaction amount:
Transaction amount: USD 150,000 thousand

6. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party, name disclosure may be omitted):
Counterparty: WisLab EMS Corporation
Relationship with the company: 100% owned subsidiary

7. If the counterparty is a related party, disclose the reason for selecting the related party as the transaction party, the previous transferor, the relationship between the previous transferor and the company and the counterparty, the transfer date, and the transfer amount:
Reason for selecting related party: The company owns 100% of the subsidiary

8. If the ownership of the subject matter was held by a related party of the company within the past five years, disclose the date, price, and relationship with the company at the time of acquisition and disposal by the related party:
Not applicable

9. Matters related to the disposal of receivables (including types of collateral attached to disposed receivables; if receivables from related parties are involved, disclose the name of the related party and the book value of the receivables disposed):
Not applicable

10. Gain (or loss) from disposal (not applicable for acquisition of securities; if deferred, provide a table explaining recognition):
Not applicable

11. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements:
Payment via wire transfer

12. Decision-making method for the transaction, reference basis for pricing, and decision-making body:
Approved by the board of directors

13. Net asset value per share of the securities-issuing company (for acquisition or disposal of securities):
Not applicable

14. Cumulative holdings of the securities involved in this transaction (including this transaction) to date, including quantity, amount, ownership percentage, and any restrictions on rights (e.g., pledge status):
Amount: USD 212,100 thousand
Ownership percentage: 100%

15. Cumulative securities investments under Article 3 of the 'Regulations Governing the Acquisition or Disposition of Assets by Publicly Issued Companies' (including this transaction) as a percentage of total assets and equity attributable to owners of the parent in the company’s most recent financial statements, and the amount of working capital in the most recent financial statements:
Percentage of total assets: 23.45%
Percentage of equity attributable to owners of the parent: 110.09%
Working capital amount: TWD 36,703,467 thousand

16. Broker and brokerage fees:
None

17. Specific purpose or use of the acquisition or disposal of securities:
To support the subsidiary’s business development and strategic planning needs

18. Dissenting directors’ opinions on this transaction:
None

19. Whether this transaction is a related-party transaction: Yes

20. Date of auditor’s acknowledgment or audit committee approval:
June 26, 2026 (Republic Era Year 115)

21. Whether the accountant issued a non-reasonableness opinion for this transaction: Not applicable

22. Name of the accounting firm:
Not applicable

23. Name of the accountant:
Not applicable

24. Accountant’s license number:
Not applicable

25. Whether this involves a change in business model: No

26. Explanation of business model change:
Not applicable

27. Transaction history with the counterparty in the past year and expected in the next year:
Not applicable

28. Source of funds:
Internal funds

29. Previous date of material information disclosure regarding the same event: Not applicable

30. Other explanatory matters:
None