Cheng Loong Announces $10 Million Capital Injection into Vietnamese Subsidiary

Announcement Date: August 8, 2026 Statement Date: August 7, 2026 Statement Time: 15:30:16 Company Code: 1904 Company Name: Cheng Loong Subject: Board Resolution by Cheng Loong Southeast Asia Holding to Increase Capital in Cheng Loong Vietnam Investment Applicable Clause: Clause 20 Factual Date: August 7, 2026

Details:

1. Name and Nature of the Subject Asset (if preferred shares, specify dividend rate and other terms): Cheng Loong Vietnam Investment Co., Ltd.

2. Factual Date: August 7, 2026 ~ August 7, 2026

3. Board Approval Date: August 7, 2026 (Minguo Year 115)

4. Other Approval Dates: Not applicable

5. Transaction Quantity, Unit Price, and Total Amount: Transaction Quantity: 10,000,000 shares Total Transaction Amount: USD 10,000,000

6. Counterparty and Relationship with the Company (if individual and not a related party, name may be omitted): Cheng Loong Vietnam Investment Co., Ltd.; 100% owned subsidiary

7. If counterparty is a related party, disclose reason for selection, previous owner, relationship among parties, transfer date, and amount: Not applicable

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

9. Matters regarding disposal of receivables (including collateral types; if receivable from related party, disclose name and book value): Not applicable

10. Gain (or loss) from disposal (not applicable if acquiring securities; deferred gains must be detailed): Not applicable

11. Delivery or payment terms (period and amounts), contractual restrictions, and other important clauses: Capital contribution made in one or multiple installments based on funding needs

12. Decision-making method, pricing reference basis, and decision-making body: Board resolution of Cheng Loong Southeast Asia Holding Co., Ltd.

13. Net asset value per share of the securities-issuing company: NT$26.05

14. Cumulative holdings (including this transaction) of the securities: quantity, amount, ownership percentage, and rights restrictions (e.g., pledge status): Quantity: 122,870 thousand shares Amount: USD 122,870 thousand Ownership Percentage: 100% Rights Restrictions: None

15. Proportion of cumulative securities investments (under Article 3 of the 'Asset Acquisition and Disposal Standards for Publicly Issued Companies') to total assets and equity attributable to parent owners in the latest financial statements, and operating capital amount: Percentage of total assets in Q4 2025 standalone financial statements: 19.54% Percentage of equity attributable to parent owners in Q2 2026 consolidated financial statements: 36.10% Operating capital in Q4 2025 standalone financial statements: NT$6,057,314 thousand

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of the acquisition or disposal: To capitalize Cheng Loong Bac Giang Company Limited

18. Dissenting director opinions on this transaction: None

19. Is this a related-party transaction: Yes

20. Date of supervisor approval or audit committee consent: August 7, 2026 (Minguo Year 115)

21. Did auditors issue a non-reasonable opinion: No

22. Auditor firm name: Not applicable

23. Auditor name: Not applicable

24. Auditor license number: Not applicable

25. Does it involve a change in business model: No

26. Explanation of business model change: Not applicable

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

28. Source of funds: Not applicable

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

30. Other disclosures: None