Comments on: “Trading costs on the Stock Exchange of Thailand” Authors: Charoenwong C., Ding D.K., Jenwittayaroje N. Comments on: “Risk-taking behaviour during downturn: evidence of loss-chasing and

10 May 2018 Re Explanation and analysis of the Management for the 1st quarter of 2018 ended 31 March 2018 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 2/2561 of the

10 August 2017 Re Explanation and analysis of the Management for the 2nd quarter of 2017 ended 30 June 2017 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 3/2560 of the

NO. OMD011/2562 15 May 2019 Re Explanation and analysis of the Management for the 1st quarter of 2019 ended 31 March 2019 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 2

No. OMD 013/2562 13 August 2019 Re Explanation and analysis of the Management for the 2nd. quarter of 2019 ended 30 June 2019 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting

9 August, 2018 Re Explanation and analysis of the Management for the 2nd. quarter of 2018 ended 30 June 2018 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 4/2561 of the

12 November, 2018 Re Explanation and analysis of the Management for the 3rd. quarter of 2018 ended 30 September 2018 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 5/2561

14 November 2019 Re Explanation and analysis of the Management for the 3rd. quarter of 2019 ended 30 September 2019 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 4/2562

/2563 13 May 2020 Re Explanation and analysis of the Management for the 1st quarter of 2020 ended 31 March 2020 To Director and Manager, Stock Exchange of Thailand The Company would like to submit

/2563 13 Aug 2020 Re Explanation and analysis of the Management for the 2nd quarter of 2020 ended 30 June 2020 To Director and Manager, Stock Exchange of Thailand The Company would like to submit herewith