Change of securities' name Subject : Change of company name and symbol of THCOM and related DWs Company name : THAICOM PUBLIC COMPANY LIMITED (THCOM) Company name - old : THAICOM PUBLIC COMPANY LIMITED Company name - new : GULF SPACE TECHNOLOGY PUBLIC COMPANY LIMITED Securities symbol - old : THCOM Securities symbol - new : GST Securities symbol - old : THCOM01C2612A Securities symbol - new : GST01C2612A Securities symbol - old : THCOM13C2612A Securities symbol - new : GST13C2612A Securities symbol - old : THCOM13C2703A Securities symbol - new : GST13C2703A Effective date : 28-Sep-2026 ______________________________________________________________________

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