Notification the final exercise and request for suspension of IROYAL-W1

Notification the exercise of securities/ Notification the conversion of securities Subject : Notification the Final Exercise of securities Date announced : 21-Sep-2026 Name of securities : IROYAL-W1 Exercise date : 28-Oct-2026 Book closing date of warrant : From 07-Oct-2026 to 28-Oct-2026 registration Date of request to post "SP" sign : From 05-Oct-2026 to 28-Oct-2026 The notification period for the exercise : From 12-Oct-2026 to 27-Oct-2026 of the securities Exercise price (baht per share) : 2.92 Exercise ratio (Warrants : common : 1 : 1.0257 shares) Delisting date : 29-Oct-2026 Exercise Procedure : https://interroyalengineering.com/invester-relation/inverster-updates/ Contact Persons and Place to Exercise : Agent Receiving Exercise Intention and Place to exercise the Warrants KGI Securities (Thailand) Public Company Limited Address: Securities Operation Department, Share Registration Section 195 One Bangkok Tower 4, 18th -19th Floor, Wireless Road, Lumpini, Pathumwan, Bangkok 10330 Contact: - Subscription Ms. Wilai Sandot Tel. 02-658-8360 Mr. Narison Pongkanpai Tel. 02-658-8361 - Payment Ms. Pornpimal Thongpiam Tel. 02-658-8712 Ms. Noppawan Boonrodrattanakul Tel. 02-658-8776 Authorized to sign on behalf of the : Mr. Panapat Mekhasuwandumrong company Position : Chief Executive Officer ______________________________________________________________________ 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.