and Analysis Quarterly Ending September 30, 2018 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 4/2018

Discussion and Analysis Quarterly Ending September 30, 2020 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited ( the Company) No. 5

Miss Manida Zinmerman Miss Manida Zinmerman, Independent Director and Audit Committee Member of Business Online Public Company Limited (“BOL”), had changed her securities holding on September 2, 2021

TKS on 6 September 2021. In this regard, Mr. Supant had the duty to prepare and disclose a report regarding his holding securities and the changes to such holdings (Form 59) within 9 September 2021

Discussion and Analysis Quarterly Ending September 30, 2019 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 4

SEPTEMBER 2020 # A | Stock in SET100 | Offering Date - 02/04/2020 - 05/10/2020

Derivative Warrants | TRUE28C1509B | DERIVATIVE CALL WARRANTS ON TRUE CORPORATION PUBLIC COMPANY LIMITED ISSUED BY MACQUARIE SECURITIES (THAILAND) LIMITED LAST TRADING IN SEPTEMBER 2015 # B | Stock

Derivative Warrants | S5001C1509A | DERIVATIVE CALL WARRANTS ON SET50 INDEX ISSUED BY BUALUANG SECURITIES PUBLIC COMPANY LIMITED LAST TRADING IN SEPTEMBER 2015 # A | Index | Offering Date - 20/05

Derivative Warrants | S5001P1509A | DERIVATIVE PUT WARRANTS ON SET50 INDEX ISSUED BY BUALUANG SECURITIES PUBLIC COMPANY LIMITED LAST TRADING IN SEPTEMBER 2015 # A | Index | Offering Date - 20/05/2015

Derivative Warrants | ITD28C1509A | DERIVATIVE CALL WARRANTS ON ITALIAN-THAI DEVELOPMENT PUBLIC COMPANY LIMITED ISSUED BY MACQUARIE SECURITIES (THAILAND) LIMITED LAST TRADING IN SEPTEMBER 2015 # A