ที่บชง Page 1 of 4 Ref. Bor Chor Ngor 0140 /2020 13 May 2020 Subject: Management Discussion and Analysis for the First Quarter ended 31 March 2020 To President The Stock Exchange of Thailand Quality

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 22 February 2019 Re: To clarify the financial statements as of 31 December 2018 To: President The Stock Exchange of Thailand WHA Corporation Public Company

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 9 May 2019 Re: To clarify the financial statements as of 31 March 2019 To: President The Stock Exchange of Thailand WHA Corporation Public Company Limited (the

แบบแสดงรายการข้อมูลสำหรับการเสนอขายหลักทรัพย์ (แบบ 69-1) 1 No. WHAUP-CS015/2562 August 08, 2019 Attention: Managing Director – Stock Exchange of Thailand Subject: Report of Financial Results for the

% 227 EBITDA Margin (%) 8.9% 4.7% 4.1% -4.9% -0.6% 9.1% 5.3% -3.8% 1.3% Net Profit 204 71 55 -73% -23% 795 270 -66% 937 EPS (Baht/Share) 0.28 0.07 0.05 -81% -23% 1.07 0.30 -72% (1.42) Stock Gain/(Loss

Day."As a member of the World Federation of Stock Exchanges, the Stock Exchange of Thailand is delighted to have participated, for the 9th consecutive year, in the Ring the Bell for Gender Equality

would like to disclose information on the said transaction to the Stock Exchange of Thailand (“SET”) in accordance with the Acquisition or Disposal Notification as follows: 1. Date / Month / Year of the

LIMITED (BCH) Mr. PIPHOB VEERAPHONG Reporter Common Share 29/09/2021 100,000 21.40 Sale Link BANGKOK CHAIN HOSPITAL PUBLIC COMPANY LIMITED (BCH) Mr. SURAPANT TAWEEWIKAYAKARN Reporter Single Stock Future

Extraordinary General Meeting of the Shareholders No. 2/ 2 5 6 1 , Land purchased from the connected person and sell in investment of the subsidiary (Revised 2) Attention The President The Stock Exchange of

www.ucity.co.th (-Translation-) Ref. No. U.SET 010/2019 April 30, 2019 Subject : Entering into the Agreement to Acquire Ordinary Shares in 12 Companies in Germany and Switzerland To : The President The Stock