Conversion of preferred shares into ordinary shares in December 2025

Report on the result of exercise of other convertible securities (F53-5) Report date of securities allocation : 30-Dec-2025 Exercised securities Preferred stock Common shares Preferred Stock trading symbol : csc-p Name of Preferred Stock : Preferred Shares of CSC Number of converted preferred : 0 stock (shares) Number of non converted preferred : 799,225 stock (shares) Ratio (Preferred shares : shares) : 1 : 1 Conversion Price (baht/share) : 0.00 Exercise Date : From 30-Dec-2025 To 30-Dec-2025 Number of shares derived from : 0 conversion (shares) Number of remaining shares : 799,225 reserved (shares) Authorized to sign on behalf of the : Mr.Opart Dhanvarjor company Position : Director and President ______________________________________________________________________ This announcement was prepared and disseminated by listed company or issuer through the electronic system which is provided for the purpose of dissemination of the information and related documents of listed company or issuer to the Stock Exchange of Thailand only. The Stock Exchange of Thailand has no responsibility for the correctness and completeness of any statements, figures, reports or opinions contained in this announcement, and has no liability for any losses and damages in any cases. In case you have any inquiries or clarification regarding this announcement, please directly contact listed company or issuer who made this announcement. If you would like to see the full details of this information, please click view "full details" in attached file.