Subject: Clarification of 3rd Quarter 2019 operating results that posted a difference greater than 20% from the preceding year To: Director and Manager the Stocks Exchange of Thailand World corporation

of Contract for Difference (CFD) with several underlyings such as gold, crude oil and stock index. This is a speculation for the difference between the current value of an the underlyings  without

Engagements) (1) (1) 4 (Human Resources) ( ) ( ) 5 (Engagement Performance) (2) ( ) 6 (Monitoring) (1) (2) 100 .20 65 2 KPMG KPMG AQIs 2 KPMG KPMG 2 KPMG KPMG KPMG KPMG KPMG KPMG KPMG KPMG 108 31 2564 5.60

) 4 (Human Resources) ( ) ( ) 5 (Engagement Performance) (2) ( ) 6 (Monitoring) (1) (2) 100 .20 85 2 EY data analytic tools EY EY EY EY EY EY EY EY EY 211 30 2564 6.41 35 EY 3 3 1 (Leadership

(Engagement Performance) (2) ( ) 6 (Monitoring) (1) (2) 100 .20 50 - 2 - 10 technical committee 5 31 2565 17,698 0.09 3 3 1 (Leadership Responsibilities for Quality within the Firm) 3 2 (Relevant Ethical

year. The quarterly comparison of its performance in different business categories is shown in the table below: (Unit: Million Baht) Third quarter 9-month period 2017 2016 Difference % 2017 2016

On 15 June 2023, the SEC took part in the MMoU/EMMoU Monitoring Group meeting, in which IOSCO members’ information sharing and assistance under the MMoU/EMMoU framework was reported, and made an

monitoring and coordinating with the business operators, we have found that they have implemented their BCP to manage possible impacts of COVID-19 and opened an alternative site or installed remote working

mobilization, corporate monitoring and accounting supervision. Prior to joining the SEC in 1992, she was an analyst at the Bank of Thailand.The SEC's new line of commands effective from 11 February 2019 is

supervision and risk assessment of intermediaries and the monitoring of industry development, to prevent excessive burdens on securities and derivatives intermediaries.The proposed revision covers the reporting