Notification on resumption of market making activities on 1 DW

Notification for the duty of market maker on DW Subject : Resumption of market making activities Security Symbol : - HSI28P2610B Reason : The Exchange of underlying securities and The Exchange of final settlement price resumed trading Not perform market making activities : From 14-Aug-2026 Time 10:00 from Resume market making activities from : From 14-Aug-2026 Time 13:19 Remark : Macquarie Securities (Thailand) Limited ("Issuer") has issued Derivative Warrant, HSI28P2610B (the "DW") traded over the Stock Exchange of Thailand ("Exchange"). Due to the ceiling price for the DW being set at THB 0.20 which was below the theoretical price, the Market Maker was unable to provide liquidity on the DW and as a result market making was not conducted during 10:00 - 13:18 (local time). Upon the ceiling price being adjusted by the Exchange to a price above the theoretical price of the DW, the Market Maker was able to resume market making on that DW starting from 13:19 (local time). ______________________________________________________________________ Authorized person to disclose : Mr. Noppadon Duangthipnest information Position : Director ______________________________________________________________________ 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.