. Attention: President Stock Exchange of Thailand Enclosures: 1. Summary of Adjustment of the Exercise Ratio by adjusting Number of ORI- W1 2. Information Memorandum on Asset Acquisition Transaction of Origin

acquisition transaction of the company and subsidiary. Attention: President Stock Exchange of Thailand Enclosures: 1. Summary of Adjustment of the Exercise Ratio by adjusting Number of ORI- W1 2. Information

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

-Translation- Ref. No. PorBor.027 / 2019 September 11, 2019 Subject: Entering into Transaction of Disposing of Subsidiary’s ordinary shares To: President The Stock Exchange of Thailand Enclosure

SAAM Energy Development Public Company Limited - 1 - 13 February 2019 Subject: Management Discussion and Analysis for the year ended 31 December 2018 To: The President The Stock Exchange of Thailand

- Translation - LPH/SET/2017/019 August 11, 2017 To : President The Stock Exchange of Thailand The Board of Directors’ Meeting of Ladprao General Hospital Public Company Limited (the “Company” or

-1 1 Ref. LPN/SorKor/119/2563 7th May 2020 Re: Financial Statements Analysis Report Q1/2020 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co.,Ltd. would like to submit the

entering into the transaction of acquisition and disposal of assets and the connected transaction To President The Stock Exchange of Thailand Enclosure Information Memorandum on the Acquisition and Disposal

expansion, ii) increase in professional expenses including consulting fees related to operational systems preparation and legal fees, iii) incurred unrealized loss from exchange rate of equipment deposit

SAAM Energy Development Public Company Limited - 1 - 10 May 2019 Subject: Management Discussion and Analysis for the period ended 31 March 2019 To: The President The Stock Exchange of Thailand SAAM