[Mega Financial Holding] Announcement on behalf of subsidiary Mega Securities regarding the ex-dividend record date for dividend distribution

1. Date of the board of directors, shareholders' meeting resolution, or company decision: 2026/04/22 2. Type of ex-rights or ex-dividend (please enter "ex-rights", "ex-dividend", or "ex-rights and ex-dividend"): Ex-dividend 3. Type and amount of dividend distribution: Cash dividend of NT$ 745,656,567, approximately NT$ 0.6162 per share 4. Ex-rights (dividend) trading date: NA 5. Last transfer date: 2026/04/23 6. Start date of suspension of transfer: 2026/04/24 7. End date of suspension of transfer: 2026/04/28 8. Ex-rights (dividend) record date: 2026/04/28 9. Other matters to be specified: Cash dividend payment date: 2026/04/29