Hsu Hui Advanced Materials (6698) Announces Subscription Benchmark Date and Related Schedule for Cash Capital Increase and New Share Issuance

Announcement Date: August 1, 2026 (ROC Year 115) Statement Date: July 31, 2026 (ROC Year 115) Statement Time: 14:53:09 Company Code: 6698 Company Name: Hsu Hui Advanced Materials Subject: Announcement of the subscription benchmark date and related operational schedule for the company's new share issuance via cash capital increase Applicable Clause: Item 11 Factual Event Date: July 31, 2026 (ROC Year 115) Details: 1. Board resolution or company decision on capital increase benchmark date: July 31, 2026 (ROC Year 115) 2. Whether the issuance of new shares is conducted under a blanket filing (if yes, specify the scheduled issuance period; if no): No 3. Regulatory authority approval effective date: July 29, 2026 (ROC Year 115) 4. Board resolution (or supplementary) issuance decision date: June 17, 2026 (ROC Year 115) 5. Total issuance amount and number of shares: Issuance of 5,000 thousand ordinary shares, with a total par value of NT$50,000 thousand. 6. For blanket-filed new share issuance cases, the amount and number of shares issued this time: Not applicable 7. For blanket-filed new share issuance cases, the remaining amount and number of shares after this issuance: Not applicable 8. Par value per share: NT$10. 9. Issue price: To be determined and announced separately. 10. Number of shares reserved for employee subscription: 15% of the total issued shares reserved for employee subscription pursuant to Article 267 of the Company Act. 11. Existing shareholder subscription ratio: 75% of the issued shares shall be subscribed by existing shareholders in proportion to their holdings as recorded in the shareholder register on the subscription benchmark date. 12. Public offering method and number of shares: Pursuant to Article 28-1 of the Securities and Exchange Act, 10% of the issued shares will be publicly underwritten. 13. Handling of fractional shares and unclaimed shares due to late or insufficient subscription: Existing shareholders seeking to subscribe to fractional shares less than one unit must consolidate them into full shares through the company’s share agent between five days before and one day prior to the share transfer suspension date. Fractional shares that remain below one unit after consolidation, along with unsubscribed portions by existing shareholders and employees, or those not reported for consolidation within the deadline, shall be authorized to the Chairman to arrange for specific persons to subscribe at the issue price. 14. Rights and obligations of the newly issued shares: Identical to those of the already issued shares. 15. Use of proceeds from the capital increase: Repayment of loans from financial institutions. 16. Subscription benchmark date for the cash capital increase: August 23, 2026 (ROC Year 115) 17. Last transfer date: August 18, 2026 (ROC Year 115) 18. Start date of transfer suspension: August 19, 2026 (ROC Year 115) 19. End date of transfer suspension: August 23, 2026 (ROC Year 115) 20. Period for payment of subscription proceeds: (1) Payment period for existing shareholders and employees: August 28, 2026 – September 29, 2026 (ROC Year 115) (2) Payment period for specific persons: September 30, 2026 – October 6, 2026 (ROC Year 115) 21. Contract signing date with banks responsible for collecting and depositing subscription proceeds: To be announced after formal contract execution. 22. Authorized collection bank: To be announced after formal contract execution. 23. Authorized deposit bank: To be announced after formal contract execution. 24. Other matters to be disclosed: The subscription benchmark date and related matters for this cash capital increase were delegated to the Chairman by the Board of Directors on June 17, 2026 (ROC Year 115).