【Radiant】Announcement of Cash Capital Reduction by Subsidiary Radiant Opto-Electronics (Suzhou) Co., Ltd.

1. Date of Board Resolution: 2026/06/01 2. Reason for Capital Reduction: Group operational planning and capital allocation needs 3. Amount of Capital Reduction: USD 27,900,000 4. Shares Eliminated: N/A 5. Capital Reduction Ratio: 30% 6. Capital After Reduction: USD 65,100,000 7. Scheduled Shareholders' Meeting Date: 2026/06/05 8. Number of listed common shares after reduction: N/A 9. Ratio of listed common shares after reduction: N/A 10. Measures for low liquidity: N/A 11. Capital Reduction Record Date: Subject to regulatory approval 12. Other matters: None