6901 Diamond Investment Announces Board Resolution to Invest in Syncell Inc.

Release Date: July 4, 2026 Statement Date: July 3, 2026 Statement Time: 17:30:42 Company Code: 6901 Company Name: Diamond Investment

Subject: Announcement of Board Resolution to Invest in Syncell Inc. Applicable Clause: Clause 20 Factual Date: July 3, 2026

Details:

1. Name and Nature of the Subject Matter (if preferred shares, specify terms such as dividend rate): Syncell Inc. Series A+ Preferred Shares The shares may be converted into common shares at any time after issuance, with no expiration date specified for the conversion right.

2. Factual Date: July 3, 2026 ~ July 3, 2026

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

4. Other Approval Dates: Not applicable

5. Transaction Quantity, Unit Price, and Total Transaction Amount: Number of Units: Not applicable Unit Price: USD 0.6535 Total Transaction Amount: Up to USD 10.21 million

6. Counterparty and Relationship with the Company (if the counterparty is an individual and not a related party, name disclosure may be omitted): Not applicable

7. If the counterparty is a related party, disclose the reason for selection, previous owner, relationships among previous owner, company, and counterparty, transfer date, and 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 date, price, and relationship at the time of acquisition and disposal: Not applicable

9. Matters related to the disposal of receivables (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 for acquisition of securities) (if previously deferred, explain recognition): Not applicable

11. Delivery or Payment Terms (including payment periods and amounts), Contractual Restrictions, and Other Important Agreements: Delivery or Payment Terms: According to Syncell Inc.'s fundraising schedule Contractual Restrictions: None Other Important Agreements: None

12. Decision-Making Method, Basis for Price Determination, and Decision-Making Unit: Decision Method: Board of Directors of the Company Basis for Price Determination: Auditor's opinion on price reasonableness and Syncell Inc.'s fundraising plan Decision-Making Unit: Board of Directors of the Company

13. Net Asset Value per Share of the Securities-Issuing Company: NT$4.47

14. Cumulative Holdings (including this transaction) of the Securities: Quantity, Amount, Ownership Percentage, and Rights Restrictions (e.g., pledge status): Cumulative Quantity: Not applicable Cumulative Amount: Not applicable Cumulative Ownership Percentage: Not applicable Rights Restrictions: None

15. Proportion of cumulative securities investments (including this transaction) under Article 3 of the "Asset Acquisition and Disposition Rules for Publicly Issued Companies" to 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: Proportion to Total Assets: Not applicable Proportion to Equity Attributable to Owners of the Parent: Not applicable Working Capital Amount: NT$3,691,713 thousand

16. Broker and Brokerage Fees: None

17. Specific Purpose or Use of the Acquisition or Disposal of Securities: Long-term investment

18. Dissenting Directors' Opinions on This Transaction: None

19. Is This a Related-Party Transaction?: No

20. Date of Supervisor Approval or Audit Committee Consent: July 3, 2026 (Minguo Year 115)

21. Did the Auditor Issue a Non-Reasonableness Opinion on This Transaction?: No

22. Name of Accounting Firm: Shin-Yu United Accounting Firm

23. Name of Accountant: Lin Chang-You, CPA

24. Accountant's Practice Certificate Number: FSC Certificate No. 4562

25. Does This 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 for the Same Event: Not applicable

30. Other Explanatory Matters: None