Comments on: “Trading costs on the Stock Exchange of Thailand” Authors: Charoenwong C., Ding D.K., Jenwittayaroje N. Comments on: “Risk-taking behaviour during downturn: evidence of loss-chasing and

Assets (revised) To : The President The Stock Exchange of Thailand The Board of Directors’ Meeting of World Corporation Public Company Limited (“the Company”) No.8/2019 Held on November 14, 2019 at 14.00

Assets N Hospital Company Limited with additional 16.67 percent To : The President The Stock Exchange of Thailand The Board of Directors’ Meeting of World Corporation Public Company Limited (“the Company

November 14, 2019 Re : Approval of Acquisition of Assets To : The President The Stock Exchange of Thailand The Borad of Directors’ Meeting of World Corporation Public Company Limited (“the Company”) No.8

List of foreign auditors approved by the office of SEC No. Audit Firm Name CPA No. Approval Period 1 Baker Tilly Monteiro Heng PLT Baker Tilly Tower Level 10 Tower 1 Avenue 5 Bangsar South City 59200

1 RP-AC 003/2020 AUGUST 14, 2020 Subject: Clarification of the operating results for the second quarter of 2020 To: Directors and Managers of the Stock Exchange of Thailand Richy Place 2002 Public

1 RP-AC 002/2020 May 13, 2020 Subject: Clarification of the operating results for the first quarter of 2020 To: Directors and Managers of the Stock Exchange of Thailand Richy Place 2002 Public

Executive, Appointment of Risk Committee To The President The Stock Exchange of Thailand The Board of Director’s Meeting No. 16/2018 of J.S.P. Property Public Company Limited, held on December 14, 2018 agree

memorandum on execution of the connected transaction to the Stock Exchange of Thailand, and also seek approval from the Shareholders’ Meeting with the favorable votes of not less than three-fourths of all

of more than three percent of the Company’s net tangible asset value, the Company is therefore required to disclose the information memorandum on execution of the connected transaction to the Stock