[Nan Ya] Supplementary explanation regarding the actual disposal of Nan Ya PCB Corporation common shares

1. Name of securities: Common stock of Nan Ya Printed Circuit Board Corporation 2. Trading date: 2026/03/19 ~ 2026/05/15 3. Date of board of directors approval: March 11, 2026 4. Other approval dates: Not applicable 5. Transaction volume, unit price, and total transaction amount: Transaction volume: 19,385,000 shares Unit price: Average transaction price of NT$689.78 per share Total transaction amount: NT$13,371,418,000 6. Profit (or loss) from disposal: Not applicable 7. Relationship with the underlying company: Subsidiary of the Company 8. Cumulative holding, amount, shareholding ratio, and restrictions: Cumulative volume held: 393,974,977 shares Amount: NT$28,491,537 thousand Shareholding ratio: 60.97% Restrictions: None. 9. Ratio of total securities investment to total assets and equity, and operating capital: Ratio to total assets: 79.87% Ratio to equity attributable to owners of the parent: 111.03% Operating capital: -NT$19,475,474 thousand 10. Concrete purpose of disposal: To enrich operating capital and strengthen financial structure. 11. Opinions of dissenting directors: Not applicable 12. Is this a related party transaction: No 13. Counterparty and relationship: None 14. Date of supervisor/audit committee approval: Not applicable 15. Date of previous announcement: March 11, 2026 16. Other matters: None