Radiant Opto-Electronics Announces Notice to Creditors Regarding Cash Capital Reduction of Subsidiary Radiant Opto-Electronics (Nanjing) Co., Ltd.

1. Date of occurrence: June 5, 2026 2. Company name: Radiant Opto-Electronics (Nanjing) Co., Ltd. 3. Relationship to the Company (enter head office or subsidiary): Subsidiary 4. Reciprocal shareholding ratios: Not applicable 5. Cause of occurrence: Radiant Opto-Electronics (Nanjing) Co., Ltd. has resolved at the extraordinary shareholders' meeting to implement a cash capital reduction plan. 6. Countermeasures: (1) The cash capital reduction amount is USD 15,750,000, the reduction ratio is 30%, and the capital after reduction will be USD 36,750,000. (2) The matter will be handled in accordance with the regulations of the subsidiary's place of registration. If creditors have objections to this capital reduction plan, please submit them in writing with proof of claims attached to the Company within 45 days from the date of announcement (i.e., before July 20, 2026). (Postmark date serves as proof. Acceptance address: Finance & Accounting Department, Radiant Opto-Electronics Corporation, No. 1, Zhongliu Road, Qianzhen District, Kaohsiung City. Please specify the contact person and contact method, and mark the envelope with "Radiant Opto-Electronics (Nanjing) Co., Ltd. Cash Capital Reduction Creditor Letter," and send by registered mail.) Failure to raise objections by the deadline will be deemed as consent to this capital reduction plan. 7. Any other matters that need to be specified: None.