No. RMG 69/2026 28 August 2026 Subject: Notification of the asset appraisal value of Grande Royal Orchid Hospitality Real Estate Investment Trust with Buy-Back Condition To: President The Stock Exchange of Thailand One Asset Management Limited ("ONEAM"), in its capacity as the REIT Manager of Grande Royal Orchid Hospitality Real Estate Investment Trust with Buy-Back Condition ("GROREIT"), would like to inform you of the appraisal value. GROREIT has appointed an appraiser to consider the appraisal value in the event of lease expiration (freehold right). The Appraiser submitted additional statements to GROREIT on 28 August 2026, with details as follows: Project Name Royal Orchid Sheraton Hotel & Towers Project Appraiser The Valuation & Consultants Company Limited Valuation Date 30 January 2026 The Additional Opinion Date of Market Value in case of Lease Termination (Freehold Right) 28 August 2026 Detail of Asset Freehold right in the immovable and movable properties of the Royal Orchid Sheraton Hotel & Towers Project 726 Rooms available for servicing Location No. 2 Captain Bush Lane, New Road, Bangrak Sub-district, Bangrak District, Bangkok Province Total Area Total land area approximately 5 rai 1 ngan and 65 square wah Valuation Method Income Approach Discount Rate 7.00% Appraisal Value 5,212,000,000 Baht Investors may request further details of the appraisal report from One Asset Management Limited at telephone number 02-659-8888. Please be informed accordingly. Yours sincerely, (Mr. Alongkorn Prathanrasnikorn) Chief Property and Trust Officer One Asset Management Limited ______________________________________________________________________ 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.

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