[Quanta] Indirect Cash Capital Increase for Subsidiary QMN, with Announcements from QIL, AIC, QMI, and QMN Regarding Cash Capital Increase

1. Name and nature of the subject matter (if preferred shares, specify terms such as dividend rate): Cash capital increase for Quanta Manufacturing Nashville LLC (QMN)

2. Date on which the fact occurred: August 13, 2026 ~ August 13, 2026

3. Date of board approval: August 13, 2026 (ROC Year 115)

4. Other approval dates: Not applicable

5. Transaction quantity, unit price, and total transaction amount: USD 973,000 thousand (approximately NT$30,990,050 thousand; exchange rate: 31.85), executable in tranches within the total amount

6. Counterparty and its relationship with the company (if individual and not a related party, name may be omitted): Cash capital increase in ordinary shares via investment flow:本公司 (QCI) → Quanta International Limited (QIL) → Access International Company (AIC) → Quanta Manufacturing Incorporation (QMI) → Quanta Manufacturing Nashville LLC (QMN), with phased investments allowed. All aforementioned companies are wholly-owned subsidiaries (100% ownership) of the company through this investment chain.

7. If counterparty is a related party, reason for selection, previous transferor, relationships among parties, transfer date, and amount: Not applicable (cash capital increase)

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

9. Matters related to debt disposal (including types of collateral, and if receivables from related parties, disclose names and book amounts): Not applicable

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

11. Delivery or payment terms (period and amount), contractual restrictions, and other important agreements: To be executed according to capital increase schedule

12. Decision-making method, pricing reference basis, and decision-making body: Board resolution; phased investment allowed within total approved amount

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

14. Cumulative holdings (including this transaction) in terms of quantity, amount, ownership percentage, and rights restrictions (e.g., pledge status): QCI → QIL → AIC → QMI → QMN Cumulative investment in QMN: USD 2,151,350 thousand Ownership percentage: 100% across all entities Rights restrictions: None

15. Aggregate securities investments under Article 3 of the 'Rules for Publicly Issued Companies Acquiring or Disposing of Assets' (including this transaction) as a percentage of total assets and equity attributable to owners of parent in the latest financial statements, and working capital amount: 5.40%; 45.75%; NT$217,490,579 thousand

16. Broker and brokerage fees: Not applicable

17. Specific purpose or use of acquisition or disposal: For business needs

18. Dissenting directors' opinions regarding this transaction: None

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

20. Date of supervisor acknowledgment or audit committee approval: August 13, 2026 (ROC Year 115)

21. Whether accountants issued an adverse opinion: Not applicable

22. Name of accounting firm: Not applicable

23. Accountant's name: Not applicable

24. Accountant license number: Not applicable

25. Whether it involves changes in business model: No

26. Explanation of business model change: Not applicable

27. Transaction history with counterparty over the past year and expected future one year: Not applicable

28. Source of funds: Not applicable

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

30. Other disclosures: None