Important Subsidiary Japan Nikko-Materials Co., Ltd. Announces Resolution to Convene Extraordinary Shareholders' Meeting

Disclosure Date: July 18, 2026 Statement Date: July 17, 2026 Statement Time: 14:57:57 Company Code: 7795 Company Name: Chang Guang Subject: Announcement on behalf of important subsidiary Japan Nikko-Materials Co., Ltd. regarding board resolution to convene the first extraordinary shareholders' meeting of fiscal year 115 Applicable Clause: Clause 17 Event Date: July 17, 2026

Details: 1. Board Resolution Date: July 17, 2026 2. Extraordinary Shareholders' Meeting Date: August 6, 2026 3. Meeting Venue: Yokohama 5F, 3-1, Kinko-cho, Kanagawa-ku, Yokohama City, Kanagawa 221-0056, Japan 4. Report Items: None 5. Approval Items: None 6. Discussion Items: None 7. Election Items: Proposal for the election of auditors 8. Other Resolutions: None 9. Motion from the Floor: None 10. Share Transfer Suspension Start Date: Not applicable 11. Share Transfer Suspension End Date: Not applicable 12. Other Matters to be Stated: None