จดหมายชี้แจงq361e November 12, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 September 2018 Summary on Third Quarter

Exchange Commission No. Kor Jor. 20/2541 Re: Determination of an Additional Type of Securities _________________ By virtue of Section 4 and Section 14 of the Securities and Exchange Act B.E. 2535 (1992), the

Securities and Exchange Commission No. Sor Yor. 12/2548 Re: Application for Approval of Form and Terms of Derivatives Contracts Traded on Derivatives Exchange ______________________ Whereas the Derivatives Act

Exchange of Thailand (SET). The second category is dual listing, secondary listing and ASEAN dual offering under ACMF Framework where foreign companies offering equities in Thailand and becoming listed firms

179,674 3.6 Fees and services expenses 597,665 442,747 154,918 35.0 Fees and services income, net 4,604,034 4,579,278 24,756 0.5 Gain on trading and foreign exchange transactions, net 276,581 457,007

exchange transactions, net 106,785 162,815 (56,030) (34.4) Gain (loss) on financial liabilities designated at fair value through profit or loss, net (87,923) 15,923 (103,846) (652.2) Gain (loss) on

services expenses 138,115 114,723 23,392 20.4 Fees and services income, net 1,015,355 1,063,006 (47,651) (4.5) Gain on trading and foreign exchange transactions, net 115,364 87,750 27,614 31.5 Gain (loss) on

income 1,153,470 1,177,729 (24,259) (2.1) Fees and services expenses 138,115 114,723 23,392 20.4 Fees and services income, net 1,015,355 1,063,006 (47,651) (4.5) Gain on trading and foreign exchange

1,059,318 148,449 14.0 Gain on trading and foreign exchange transactions, net 7,842 30,383 (22,541) (74.2) Gain (loss) on financial liabilities designated at fair value through profit or loss, net 283,803

Gain on trading and foreign exchange transactions, net 7,842 30,383 (22,541) (74.2) Gain (loss) on financial liabilities designated at fair value through profit or loss, net 283,803 (80,769) 364,572