Change of the ceiling and floor price Subject : Change of the ceiling and floor price of HSI28P2610B Company name - DERIVATIVE PUT WARRANTS ON HANG SENG INDEX ISSUED BY MACQUARIE SECURITIES (THAILAND) LIMITED LAST TRADING IN OCTOBER 2026 # B (HSI28P2610B) New daily price limit : HSI28P2610B will be adjusted to have no price limit. Reason : - To align with the reference security prices in foreign markets. Effective date : 14-Aug-2026 Remark : This will be effective from Friday, August 14, 2026 since 13:15 hr. until the close of the Day Session. ______________________________________________________________________

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