Resignation and Appointment of the Director

Change of director/Executive Expired by rotation The date of board's resolution/submit : 13-Jul-2026 news Director Name : Mr. PATOMPOB SUWANSIRI Position in company (1) : DIRECTOR Effective Date (1) : 01-Jan-2022 Expire Date (1) : 13-Jul-2026 Terminate Reason : Expired by rotation (term not expired) : Resigned from position /the company due to other commitments ______________________________________________________________________ Change of director/Executive Expired by rotation Director Name : Dr. PIYAWAT JRIYASETAPONG Position in company (1) : ACTING CHIEF EXECUTIVE OFFICER Effective Date (1) : 01-Jul-2026 Expire Date (1) : 13-Jul-2026 Terminate Reason : Expired by rotation (term not expired) ______________________________________________________________________ Change of director/Executive New election Director Name : Dr. PIYAWAT JRIYASETAPONG Position in company (1) : DIRECTOR Effective Date (1) : 14-Jul-2026 Position in company (2) : CHIEF EXECUTIVE OFFICER Effective Date (2) : 14-Jul-2026 ______________________________________________________________________ The company hereby certifies that the information above is correct and complete. Signature _________________ ( MISSKANOKPHAN CHOLSIN ) Company Secretary Authorized person to disclose information ______________________________________________________________________ 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.