SDI Corporation announced Company's ex-dividend record date of cash dividends for 2021 earnings distribution plan. Date of the resolution by the board of directors or shareholders meeting or decision by the Company: May 27, 2022. Type and monetary amount of dividend distribution: TWD 3 of cash dividend per shares; totally TWD 546,420,747 allocated for cash dividend.

Ex-rights (ex-dividend) trading date: August 3, 2022. Ex-rights (ex-dividend) record date: August 9, 2022.