the Office of the Securities and Exchange Commission No. SorThor. 20/2549 Re: Rules for Derivatives Broker on Using of Derivatives Investor Contact Service and Back Office Service from Service Provider

Bangkok Insurance Public Company Limited On 7 November 2014, Bangkok Insurance Public Company Limited (BKI) sold 200,000 of Bangkok Life Assurance Public Company Limited (BLA) shares through its

Mr. Pichit Chatskulwong In June, 2017, Mrs. Phenchan Yongvongphaiboon, director and vice managing president of Asia Metal Public Limited Company ("AMC"), knew the material information that

Company Limited ("TRUBB"). Mrs. Thiphawan knew the inside information about an increase of the net profit of TRUBB and subsidiaries between January to February 2017 and January to March of 2017

Mr. Atthawit Thianwiwat Mr. Atthawit Thianwiwat is brother of Miss Panjama Thienwiwat, the insider of a subsidiary of Thai Rubber Latex Corporation (Thailand) Public Company Limited ("TRUBB

Construction Public Company Limited (STEC), knew or possesed the inside information that the financial statements of 2017 had a net loss of amount of 610.83 millions bath. Subsequently, on 16 January 2018, Mr

Public Company Limited (STEC). Subsequently, on 19 January 2018, sold 91,900 of STEC shares in the her securities trading account by using inside information prior to the disclosure such information to the

Mr.Pongsak Lothongkam During June 2018, Mr.Pongsak Lothongkam while being chief executive officer, director and managing director of SVI Public Company Limited (SVI), knew or possesed the inside

Miss Nontiya Ponlawat During June 2018, Mr.Pongsak Lothongkam while being chief executive officer, director and managing director of SVI Public Company Limited (SVI), knew or possesed the inside

Mr. Roongroj Saengsastra Mr. Roongroj Saengsastra , while being Chief Executive Officer and Director of Royal Ceramic Industry Public Company Limited (RCI) and Chief Executive Officer and Chairman