determination of record date and the date of 2020 Annual General Meeting of Shareholders) To: President The Stock Exchange of Thailand Attachment: 1. Financial assistance to KT Medical Service Company Limited 2

(Thailand) Co., Ltd. (“Investment in S-TREK”), capital increase, the issuance and allocation of the newly issued ordinary shares relating to Investment in S-TREK, and the amendment of 2019 Annual General

insignificant alteration in total electricity sales. The solar power plant projects in Thailand has current PPA capacity at 138.9 MW, an increase from Q1/2018 after the commercial operation commencement of the

tourists visited Thailand grew by 7.6 percent. The highest growth was contributed from tourists from South Asia and the Americas at 14.0 percent in which the growth from the Americas has appeared to be

- Pacific remains at the top with a growth of 8.4 percent following by 6.5 and 6.2 percent in Middle-East and European carriers. (Source: International Air Transport Association) Tourism industry in Thailand

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

% Net profit margin attributable to owners of the parent 13.2% 13.1% 0.1% 12.8% 12.3% 0.5% Key Change in Segment Grouping In 2019, the Company has changed reportable segments. The strategic divisions

-Translation- Ref. WINNER 006/2020 February 27, 2020 Subject: Management Discussion and Analysis (MD & A) for the year 2019 To: The President The Stock Exchange of Thailand 1. Analysis of Overall

คำอธิบายและการวิเคราะห์ของฝ่ายจัดการ 10 November 2017 Re: To clarify the financial statements as of 30 September 2017 To: President The Stock Exchange of Thailand WHA Corporation Public Company

benefit plan - Unrealized gain (loss) on change Value of investments in available-for-sale securities -Adjustment for loss on changes in fair value Available-for- sale securities are impairment losses