Discussion and Analysis for the quarter 1 year 2018 To The President of the Stock Exchange of Thailand Management’s Discussion and Analysis Consolidated Financial Results for the quarter 1 year 2018 For the

of Opportunity Booth at BOI Fair, in cooperation with the Stock Exchange of Thailand and the Investment Banking Club (IB Club). The joint campaign features a seminar on ?How to Boost Business Growth

Management Discussion and Analysis for the third quarter ended September 30, 2019 Attention The President The Stock Exchange of Thailand Attachment Report and interim financial statement for the third quarter

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 10 May 2018 Re: To clarify the financial statements as of 31 March 2018 To: President The Stock Exchange of Thailand WHA Corporation Public Company Limited (the

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

Connected Transactions and the Notification of the Board of Governor of the Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of Listed Companies concerning Connected Transactions B.E

ทุนจดทะเบียน B. Memorandum and Articles of Association หนังสือบริคณหสนธิและขอบังคับบริษัท (X) C. Material Contracts รายละเอียดเก่ียวกับสัญญาท่ีสําคัญ (X) D. Exchange Controls การควบคุมอัตราแลกเปลี่ยน

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 28 February 2020 Re: To clarify the financial statements as of 31 December 2019 To: President The Stock Exchange of Thailand As WHA Corporation Public Company

is selected to include in Thailand Sustainability Investment (THSI) among other 65 listed companies by the Stock of Exchange of Thailand (SET). This selection does not only reflect how the company