SAAM Energy Development Public Company Limited - 1 - 12 May 2020 Subject: Management Discussion and Analysis for the period ended 31 March 2020 To: The President The Stock Exchange of Thailand SAAM

SAAM Energy Development Public Company Limited - 1 - 7 August 2020 Subject: Management Discussion and Analysis for the period ended 30 June 2020 To: The President The Stock Exchange of Thailand SAAM

December 12, 2018 Subject : Acquisition of 84.50% shares of WPS (Thailand) Co., Ltd. Attention : Director and Manager Stock Exchange of Thailand Enclosure : 1. Memorandum of the Acquisition of Asset

and Allocation of Securities to the Specific Investor (Private Placement) (Amendment 2) To The President The Stock Exchange of Thailand Attachment 1. Information Memorandum regarding the Acquisition of

Allocation of Securities to the Specific Investor (Private Placement) (Amendment 3) To The President The Stock Exchange of Thailand Attachment 1. Information Memorandum regarding the Acquisition of Assets and

www.ucity.co.th (-Translation-) Ref. No. U.SET 019/2018 2 April 2018 Subject: Disposal of the assets in Amphoe Aranyaprathet, Sa Kaeo To: The President The Stock Exchange of Thailand U City Public Company Limited

discussion and analysis for the year ended December 31, 2018 To Director and Manager of the Stock Exchange of Thailand Referring to the submission of the audited financial statements of Wiik & Hoeglund Public

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March 20, 2019 Re: Notification of the Resolutions on the Acquisition of Land and Establishment of Subsidiary To: The President The Stock Exchange of Thailand Attachment 1. Information Memorandum of the

Stock Exchange of Thailand The Meeting of the Board of Directors of WHA Corporation Public Company Limited (“Company”) No. 6/2017 held on 10 November 2017 passed resolutions relating to the sale of and