KMC Announces Cash Capital Increase of NT$800 Million for 100%-Owned Subsidiary KMC Enterprise Co., Ltd.

1. Name and nature of the subject matter (if preferred shares, specify conditions such as dividend rate): Ordinary shares of KMC Enterprise Co., Ltd. (referred to as KMC Enterprise), a 100%-owned subsidiary of the company.

2. Date on which the fact occurred: August 11, 2026 ~ August 11, 2026

3. Date of board approval: August 11, 2026 (Republic Era 115)

4. Other approval dates: Not applicable

5. Transaction quantity, unit price, and total transaction amount: Planned total amount: NT$800,000,000

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party, name disclosure may be omitted): Participation in the capital increase of the company's 100%-owned subsidiary.

7. If the counterparty is a related party, state the reason for selection, previous transferor, relationships among the previous transferor, the company, and the counterparty, transfer date, and transfer amount: Not applicable

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

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

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

11. Delivery or payment terms (including payment periods and amounts), contractual restrictions, and other important agreements: In accordance with the progress of KMC Enterprise's procedures.

12. Decision-making method for this transaction, reference basis for pricing, and decision-making body: 1. Participation in the capital increase of the company's 100%-owned subsidiary. 2. Total amount decided by the company's board of directors.

13. Net asset value per share of the securities-issuing company: Not applicable

14. Cumulative number, amount, ownership percentage, and restricted rights (e.g., pledge status) of securities held to date (including this transaction): 1. Cumulative investment amount: NT$9,761,426,500; ownership ratio: 100%. 2. The company's rights are not restricted.

15. Cumulative securities investments (including this transaction) under Article 3 of the 'Asset Acquisition and Disposition Rules for Publicly Issued Companies' as a percentage of total assets and equity attributable to owners of the parent in the company's latest financial statements, and the amount of working capital in the latest financial statements: 1. As this is a capital increase in a 100%-owned subsidiary, it is treated on a consolidated basis. Securities represent 0% of total assets and equity attributable to owners of the parent. 2. Working capital in the latest financial statements: NT$2,212,738,000

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of the acquisition or disposal: To strengthen the working capital of KMC Enterprise.

18. Dissenting opinions from directors regarding this transaction: Not applicable

19. Is this transaction a related-party transaction? Yes

20. Date of auditor's acknowledgment or audit committee approval: August 11, 2026 (Republic Era 115)

21. Did the accountant issue a non-reasonable opinion on this transaction? Not applicable

22. Name of accounting firm: Not applicable

23. Name of accountant: Not applicable

24. Accountant's license number: Not applicable

25. Does this involve a change in business model? No

26. Explanation of business model change: 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. Previous date of material information disclosure for the same event: Not applicable

30. Other explanatory matters: None