21 July 2021 Subject : Disclosure of Additional Information on The

(Translation)

21 July 2021 Subject : Disclosure of Additional Information on the Tender Offer for the Securities of Intouch Holdings Public Company Limited To : Secretary-General of the Office of the Securities and Exchange Commission President of the Stock Exchange of Thailand Board of Directors and Securities Holders of Intouch Holdings Public Company Limited Reference : Tender Offer for the Securities of Intouch Holdings Public Company Limited dated 28 June 2021 Gulf Energy Development Public Company Limited (the “Offeror” or the “Company”) has submitted the Tender Offer for the Securities of Intouch Holdings Public Company Limited (“INTUCH” or the “Business”) on 28 June 2021 for which Bualuang Securities Public Company Limited acts as a tender offer preparer for this matter (the “Tender Offer Preparer”). The Offeror and the Tender Offer Preparer would like to disclose the following additional information with regard to the tender offer of the Business where the additional information is underlined and the deleted information is strikethrough: 1. Part 1 Page 1 and 2 Objectives of the Tender Offer

Original ...In this regard, the Offeror intends to make a tender offer for all ordinary shares in INTUCH, excluding the ordinary shares in INTUCH that the Offeror held as of 28 June 2021 which is the date prior to the date on which the Tender Offer for Securities of INTUCH becomes effective, at the Offer Price of THB 65.00 per share. As of 16 June 2021, the Offerer held 606,878,314 ordinary shares in INTUCH, representing 18.93 per cent of the issued and paid-up shares in INTUCH. In the case that the Offeror acquires additional ordinary shares in INTUCH through the Stock Exchange of Thailand (the “SET”) on 25 and 28 June 2021 which is the date prior to the date on which the Tender Offer for Securities of INTUCH becomes effective at the price of not more than THB 65.00 per share, the Offeror will disclose the most updated relevant information (such as a number of INTUCH shares and shareholding percentage held by the Offeror on the date prior to the Offer Period, the highest price paid for shares acquired by the Offeror during the period of 90 days prior to the date on which the Tender Offer document is submitted to the Securities and Exchange Commission (the “SEC”), the amount of the offered securities and the funds required for the Tender Offer, etc.) through SET Portal and the SEC’s website prior to the date on which the Tender Offer for Securities of INTUCH becomes effective. Revision ...In this regard, the Offeror intends to make a tender offer for all ordinary shares in INTUCH, excluding the ordinary shares in INTUCH that the Offeror held as of 28 June 2021 which is the date prior to the date on which the Tender Offer for Securities of INTUCH becomes effective, at the Offer Price of THB 65.00 per

share. As of 16 and 28 June 2021, the OfferorOfferer held 606,878,314 ordinary shares in INTUCH, representing 18.93 per cent of the issued and paid-up shares in INTUCH (the Offeror did not acquire additional ordinary shares in INTUCH through the Stock Exchange of Thailand (the “SET”) from 16 to 28 June 2021). In the case that the Offeror acquires additional ordinary shares in INTUCH through the Stock Exchange of Thailand (the “SET”) on 25 and 28 June 2021 which is the date prior to the date on which the Tender Offer for Securities of INTUCH becomes effective at the price of not more than THB 65.00 per share, the Offeror will disclose the most updated relevant information (such as a number of INTUCH shares and shareholding percentage held by the Offeror on the date prior to the Offer Period, the highest price paid for shares acquired by the Offeror during the period of 90 days prior to the date on which the Tender Offer document is submitted to the Securities and Exchange Commission (the “SEC”), the amount of the offered securities and the funds required for the Tender Offer, etc.) through SET Portal and the SEC’s website prior to the date on which the Tender Offer for Securities of INTUCH becomes effective. 2. Part 1 Page 4 and 5 Clause 12 Source of Funds for the Tender Offer

Original In the case that all the Offerees sell all of the remaining ordinary shares in this Tender Offer, excluding 606,878,314 ordinary shares in the Business held by the Offeror as of 16 June 2021, the funds required for the Tender Offer for all of the remaining ordinary shares of the Business will be equal to THB 168,981,815,145 (One Hundred and Sixty Eight Billion Nine Hundred and Eighty One Million and Eight Hundred and Fifteen Thousand and One Hundred Forty Five Baht). The full amount of the source of funds for this Tender Offer will come from borrowings from the financial institutions. KrungThai Bank Public Company Limited, Kasikornbank Public Company Limited, Siam Commercial Bank Public Company Limited, Government Savings Bank, United Overseas Bank (Thai) Public Company Limited, TMBThanachart Bank Public Company Limited, TISCO Bank Public Company Limited, Kiatnakin Phatra Bank Public Company Limited, Deutsche Bank AG, Singapore Branch, Standard Chartered Bank (Singapore) Limited, Maybank International Labuan Branch, and Sumitomo Mitsui Banking Corporation Singapore Branch have issued confirmation letters stating that the banks have approved loan facilities to the Offeror for the purpose of Tender Offer for Securities of INTUCH in the amount of not less than THB 168,981,815,145 (One Hundred and Sixty Eight Billion Nine Hundred and Eighty One Million and Eight Hundred and Fifteen Thousand and One Hundred Forty Five Baht)1 to make a payment for this Tender Offer. (Attachment 1) In the case that the Offeror additionally acquires INTUCH shares from its additional share acquisition through the SET on 25 and 28 June 2021, the amount that the Offeror will need for this Tender Offer for Securities of INTUCH will reduce and the funds from the financial institutions mentioned above will still be sufficient for this Tender Offer for Securities of INTUCH. Bualuang Securities Public Company Limited, as the Tender Offer Preparer, has verified the source of funds of the Offeror and viewed that the loan facility is sufficient for conducting this Tender Offer.

1 Including loan facility in US dollar currency, which was converted into THB using an average exchange rate of 30.99334 THB/USD as at 16 June 2021 (Source: Bank of Thailand) 2

Revision In the case that all the Offerees sell all of the remaining ordinary shares in this Tender Offer, the Offeror shall make a tender offer for all remaining 2,599,720,233 (Two Billion Five Hundred and Ninety Nine Million and Seven Hundred and Twenty Thousand and Two Hundred and Thirty Three) ordinary shares of the Business, representing 81.07 per cent of the total issued and paid-up shares of the Business and of the total voting rights of the Business (excluding 606,878,314 ordinary shares in the Business held by the Offeror as of 16 June 2021)., tThe funds required for the Tender Offer for all of the remaining ordinary shares of the Business will be equal to THB 168,981,815,145 (One Hundred and Sixty Eight Billion Nine Hundred and Eighty One Million and Eight Hundred and Fifteen Thousand and One Hundred Forty Five Baht). The full amount of the source of funds for this Tender Offer will come from borrowings from the financial institutions. KrungThai Bank Public Company Limited, Kasikornbank Public Company Limited, Siam Commercial Bank Public Company Limited, Government Savings Bank, United Overseas Bank (Thai) Public Company Limited, TMBThanachart Bank Public Company Limited, TISCO Bank Public Company Limited, Kiatnakin Phatra Bank Public Company Limited, Deutsche Bank AG, Singapore Branch, Standard Chartered Bank (Singapore) Limited, Maybank International Labuan Branch, and Sumitomo Mitsui Banking Corporation Singapore Branch have issued confirmation letters stating that the banks have approved loan facilities to the Offeror for the purpose of Tender Offer for Securities of INTUCH in the amount of not less than THB 168,981,815,145172,682,180,000 (One Hundred and Seventy Two Sixty Eight Billion SixNine Hundred and Eighty TwoOne Million and One Hundred and Eighty ThousandEight Hundred and Fifteen Thousand and One Hundred Forty Five Baht)1 to make thea payment for this Tender Offer. Details of such loan facilities can be summarized as below:

Number Financial Institutions Loan Facility Amount (THB) 1. KrungThai Bank Public Company Limited 20,000,000,000 2. Kasikornbank Public Company Limited 10,000,000,000 3. Siam Commercial Bank Public Company Limited 20,000,000,000 4. Government Savings Bank 15,000,000,000 5. United Overseas Bank (Thai) Public Company Limited 10,000,000,000 6. TMBThanachart Bank Public Company Limited 5,000,000,000 7. TISCO Bank Public Company Limited 5,000,000,000 8. Kiatnakin Phatra Bank Public Company Limited 4,000,000,0002 9. Deutsche Bank AG, Singapore Branch 10. Standard Chartered Bank (Singapore) Limited Total loan facility of THB 11. Maybank International Labuan Branch 83,682,180,0003 12. Sumitomo Mitsui Banking Corporation Singapore Branch Total 172,682,180,000

1 Including loan facility in US dollar currency, which was converted into THB using an average exchange rate of 30.99334 THB/USD as at 16 June 2021 (Source: Bank of Thailand) 2 Fund confirmation letter of Kiatnakin Phatra Bank Public Company Limited stated that such bank will provide financial support to the Company in the amount of not exceeding THB 6,000 million. However, the amount of loan facility, based on the executed loan facility agreement, is at THB 4,000 million 3 The loan facility is in US dollar currency, which was converted into THB using an average exchange rate of 30.9934 THB/USD as at 16 June 2021 (Source: Bank of Thailand) 3

(Please consider further details of Confirmation Letter on Source of Funds Available for the Tender Offer in Attachment 1) In the case that the Offeror additionally acquires INTUCH shares from its additional share acquisition through the SET on 25 and 28 June 2021, the amount that the Offeror will need for this Tender Offer for Securities of INTUCH will reduce and the funds from the financial institutions mentioned above will still be sufficient for this Tender Offer for Securities of INTUCH. Bualuang Securities Public Company Limited, as the Tender Offer Preparer, has verified the source of funds of the Offeror and taken into account volatility of exchange rate (US dollar against Thai Baht) over the last 1 year4 and viewed that the loan facility is sufficient for conducting this Tender Offer. In this regard, there are some conditions specified in such loan facilities from financial institutions such as loan collateral, debt covenant. However, such conditions will not affect the ability of the Company to draw down the loans. 3. Part 1 Page 6 Clause 14 Payment Date

Original The Offeror will make payment to the Offeree within the 5th business day from the last day of the Offer Period, which is 11 August 2021. The Acceptance Form submitted by the Offeree must be correct and completed and the transfer of the tendered shares by the Offeree must be completed and effective. In this regard, the Offeror has granted a waiver to make payment to the Offeree within the 5th business day from the last day of the Offer Period from the Takeover Panel and/or the SEC. Revision The Offeror will make payment to the Offeree within the 5th business day from the last day of the Offer Period, which is 11 August 2021 (while the settlement period for trading shares via the SET is within the 2nd business day from the trading date) as a result of the process of drawing down the loan used to make payment for tendered shares. The Acceptance Form submitted by the Offeree must be correct and completed and the transfer of the tendered shares by the Offeree must be completed and effective. In this regard, the Offeror has granted a waiver to make payment to the Offeree within the 5th business day from the last day of the Offer Period from the Takeover Panel and/or the SEC. 4. Part 2 Page 14 and 15 Clause 1.2.7 Material Encumbrance

Original 1.2.7 Material encumbrance

The Offeror has material obligations as stated in the audited financial statements for the three months period ended 31 March 2021 which set out as follow;

4 From 17 June 2020 to 16 June 2021 4

1) Interest-bearing liabilities

Consolidated Separate financial financial statements statements Separate financial statements Short-term loans from financial institutions At 1 January 2021 11,500 11,500 Cash flow Proceeds from short-term loans from financial institutions 15,500 15,500 Payments of short-term loans from financial institutions (11,500) (11,500) At 31 March 2021 15,500 15,500 Long-term loans from financial institutions At 1 January 2021 85,936 - Cash flow Proceeds from long-term loans from financial institutions 8,242 - Change in non-cash transaction Amortisation of deferred financing fee 21 - Unrealised loss on exchange rate 1,088 - Exchange differences on translating financial statements 106 - At 31 March 2021 95,393 - Less current portion of long-term loans from financial institutions (4,223) - Net long-term loans from financial institutions 91,170 -

2) Debentures

Consolidated Separate financial financial statements statements Separate financial statements Debentures At 1 January 2021 43,428 17,486 Repayment of debentures (1,375) - Amortisation of deferred financing fee of debentures 1 1 Exchange differences on translating financial statements (112) - At 31 March 2021 41,942 17,487 Less current portion of debentures (5,004) (1,999) Net debentures 36,938 15,488

3) Contingent Liabilities as of 31 March 2021

3.1) Bank guarantees

Port of Authority of Thailand (31 December 2020: Baht 400 million). The subsidiaries had outstanding bank guarantees issued by financial institutions as a guarantee for their Power Purchase Agreements with EGAT, in respect of electricity use in the projects, and in respect of PPP Contract with Industrial Estate Authority of Thailand amounting to Baht 7,773 million (31 December 2020: Baht 7,773 million). As at 31 March 2021, the Company has Standby Letter of Credit issued by financial institutions amounting to EUR 54 million related to the compliance of a subsidiary’s debentures (31 December 2020: EUR 54 million). 3.2) Engineering services agreement, supply agreement and power plant construction agreement

As at 31 March 2021, subsidiaries had outstanding commitment from engineering services agreements, supply agreements and power plant construction agreements amounting to USD 435 million, JPY 55,420 million, EUR 27 million and Baht 5,165 million (31 December 2020: USD 469 million, JPY 55,420 million, EUR 27 million and Baht 7,171 million). 3.3) Design and infrastructure construction agreement

As at 31 March 2021, a subsidiary has outstanding commitment from design and infrastructure construction agreement, amounting to Baht 8,143 million (31 December 2020: Baht 8,143 million). 3.4) Power Purchase Agreement The Group has several power purchase agreements with the Electricity Generating Authority of Thailand, Provincial Electricity Authority, Electricity of Vietnam and private companies in Thailand and abroad for a period of 5-25 years, whereby the Group will distribute electricity and other energy to counterparties at agreed quantities and prices and the Group must comply with various terms and conditions as determined in the contract 3.5) Operation and Maintenance Agreement The Group has commitments from several power plant operation and maintenance agreements with several companies. The service fee will be as determined in the contract. These contracts are range from 20 to 25 years Revision 1.2.7 Material encumbrance

The Offeror has material obligations as stated in the audited financial statements for the year ended 31 December 2020 and the reviewed financial statements for the three months period ended 31 March 2021 which set out as follow; Material obligations according to the audited financial statements for the year ended 31 December 2020

1) Interest-bearing liabilities (unit : THB mm)

Consolidated financial statements 2020 2019 Secured Unsecured Total Secured Unsecured Total Short-term loans from - 11,500 11,500 - 68 68 financial institutions Long-term loans from 85,936 - 85,936 69,274 - 69,274 financial institutions Debentures - 43,428 43,428 - 7,494 7,494 Total interest-bearing 85,936 54,928 140,864 69,274 7,562 76,836 liabilities

(unit : THB mm)

Separate financial statements 2020 2019 Secured Unsecured Total Secured Unsecured Total Short-term loans from - 11,500 11,500 - - - financial institutions Debentures - 17,486 17,486 - 7,494 7,494 Total interest-bearing - 28,986 28,986 - 7,494 7,494 liabilities

As at 31 December 2020 the Group and the Company had short-term and long-term unutilized credit facilities totaling Baht 38,365 million and Baht 39,620 million, respectively (2019: Baht 10,366 million and Baht 58,614 million, respectively). Detail of long-term loans from financial institutions were as follow:

Number 31 December 31 December Currency Interest rate Interest payment 2020 2019 (%) period (THB mm) (THB mm) 1 61,822 52,872 Baht THBFIX plus a certain Payment every three fixed margin per annum months 2 1,058 990 Baht Fixed tranche facility Payment every six months 3 18,482 14,149 U.S. Dollar LIBOR plus a certain Payment every three fixed margin per annum months 4 5,086 756 U.S. Dollar LIBOR plus a certain Payment every six months fixed margin per annum 5 708 - U.S. Dollar Fixed tranche facility Payment every six months 6 - 1,232 Vietnam Base interest rate Payment every three Dong plus variable months margin Total 87,156 69,999

2) Debentures (unit : THB mm)

Consolidated Separate financial statements financial statements Debentures As at 1 January 2020 7,494 7,494 Proceeds from debentures 10,000 10,000 Proceeds from acquisition of subsidiary 25,923 - Guarantee of debentures (10) (10) Amortisation of guarantee of debentures 2 2 Currency translation differences 19 - As at 31 December 2020 43,428 17,486 Less Current portion of debentures (4,394) - Debentures - net 39,034 17,486

During the year 2020, the Company issued unsubordinated and unsecured debentures, denominated in Baht currency amounting to Baht 10,000 million. Maturity term of the debentures are between 3 - 10 years. The Company has to maintain debt to equity ratio according to terms and conditions specified in the agreement. Additional debentures from acquisition of subsidiary is unsubordinated and unsecured debentures, amounting to EUR 703 million. Maturity term of the debentures are between 1 - 8 years. Debentures have fixed interest rate per annum. The subsidiary has to maintain debt to equity ratio according to terms and conditions specified in the agreement. 3) Contingent Liabilities as of 31 December 2020

3.1) Bank guarantees

As at 31 December 2020, the Company had outstanding bank guarantees issued by financial institutions amounting to Baht 400 million in respect of Public Private Partnership Contract (“PPP Contract”) with the Port of Authority of Thailand (31 December 2019: Baht 400 million). The subsidiaries had outstanding bank guarantees issued by financial institutions as a guarantee for their Power Purchase Agreements with EGAT, in respect of electricity use in the projects, and in respect of PPP Contract with Industrial Estate Authority of Thailand amounting to Baht 7,773 million (31 December 2019: Baht 8,957 million). As at 31 December 2020, the Company has Standby Letter of Credit issued by financial institutions amounting to EUR 54 million related to the compliance of a subsidiary’s debentures. 3.2) Engineering services agreement, supply agreement and power plant construction agreement

As at 31 December 2020, subsidiaries had outstanding commitment from engineering services agreements, supply agreements and power plant construction agreements amounting to USD 469 million, JPY 55,420 million, EUR 27 million and Baht 7,171 million.

3.3) Design and infrastructure construction agreement

As at 31 December 2020, a subsidiary has outstanding commitment from design and infrastructure construction agreement, amounting to Baht 8,143 million. 3.4) Public Private Partnership Contract in Map Ta Phut Industrial Port Development Phase 3 Projects

The Group has entered into Public Private Partnership Contract ("PPP Contract") in Map Ta Phut Industrial Port Development Phase 3 Projects which contract term is 30 years. The project comprised of design and construction of the infrastructure and the right to construct the port and LNG terminal (Superstructure) to facilitate shipment of LNG volume. The Group recognises a financial asset arising from a service concession arrangement when it has an unconditional right to receive cash or another financial asset from or at the direction of the grantor for the construction or upgrade services provided. Such financial assets are measured at fair value upon initial recognition. Subsequent to initial recognition, the financial assets are measured at amortised cost. The Group recognised revenue from service concession agreement amounting to Baht 158 million and cost from service concession arrangement amounting to Baht 146 million in consolidated financial statement for the year ended 31 December 2020 (2019: nil) and recognised receivable from service concession arrangement amounting to Baht 159 million as at 31 December 2020 (31 December 2019: nil). 3.5) Power Purchase Agreement

The Group has Power Purchase Agreements (PPAs) with the Electricity Generating Authority of Thailand, Provincial Electricity Authority, Vietnam Electricity and private companies in Thailand and overseas. The PPAs are effective for the periods of 5 - 25 years whereby the Group will supply the electric and other energy to counterparties at the agreed quantity and price. The Group shall comply with conditions and restrictions as stipulated in these agreements. 3.6) Operation and Maintenance Agreement

The Group has obligation commitment from operation and maintenance agreements for power plants with counterparties, the service fees are stipulated in the agreements. These agreements are for period of 20 to 25 years.

Material obligations according to the reviewed financial statements for the three months period ended 31 March 2021

1) Interest-bearing liabilities (unit : THB mm)

2) Debentures (unit : THB mm)

3) Contingent Liabilities as of 31 March 2021

3.1) Bank guarantees

As at 31 March 2021, the Company had outstanding bank guarantees issued by financial institutions amounting to Baht 400 million in respect of Public Private Partnership Contract (“PPP Contract”) with the Port of Authority of Thailand (31 December 2020: Baht 400 million). The subsidiaries had outstanding bank guarantees issued by financial institutions as a guarantee for their Power Purchase Agreements with EGAT, in respect of electricity use in the projects, and in respect of PPP Contract with Industrial Estate Authority of Thailand amounting to Baht 7,773 million (31 December 2020: Baht 7,773 million). As at 31 March 2021, the Company has Standby Letter of Credit issued by financial institutions amounting to EUR 54 million related to the compliance of a subsidiary’s debentures (31 December 2020: EUR 54 million). 3.2) Engineering services agreement, supply agreement and power plant construction agreement

The Group has several power purchase agreements with the Electricity Generating Authority of Thailand, Provincial Electricity Authority, Electricity of Vietnam and private companies in Thailand and abroad for a period of 5-25 years, whereby the Group will distribute electricity and other energy to counterparties at agreed quantities and prices and the Group must comply with various terms and conditions as determined in the contract 3.5) Operation and Maintenance Agreement

The Group has commitments from several power plant operation and maintenance agreements with several companies. The service fee will be as determined in the contract. These contracts are range from 20 to 25 years

5. Part 2 Page 18 Clause 4.2.2 Shareholding in the Major Shareholder of the Business

Original 4.2.2 Shareholding in the Major Shareholder of the Business The Offeror or the Offeror’s authorized persons do not have any shareholding in another major shareholder of the Business other than shareholding by the Offeror’s authorized person in the Offeror. Revision 4.2.2 Shareholding in the Major Shareholder of the Business The Offeror or the Offeror’s authorized persons do not have any shareholding in another major shareholder of the Business other than except shareholding by the Offeror’s authorized person in the Offeror (Please see details of the shareholding of the Offeror’s authorized person in the Offeror in Part 2 Information of the Offeror Clause 1.2.3 List of Shareholders). 6. Part 2 Page 20 Clause 5.1 Securities of the Offeror that were held prior to making the tender offer and the future securities in accordance with other terms.

Original 5.1.1 Ordinary Shares as of 16 June 2021/1

Name Class Number Percentage of total Percentage of of shares of shares number total of outstanding voting rights shares

I. the Offeror 1. Gulf Energy Development Public Ordinary Shares 606,878,314 18.93 18.93 Company Limited II. Persons in the same group of the Ordinary Shares - - - Offeror III. Related parties under Section 258 of Ordinary Shares - - - the Offeror Total 606,878,314 18.93 18.93 Note: /1 In the case that the Offeror additionally acquires INTUCH shares through its purchase of shares on the SET on 25 and 28 June 2021, the Offeror will disclose most updated information on a number of INTUCH shares and shareholding percentage held by the Offeror prior to the date on which the Tender Offer for Securities of INTUCH becomes effective.

Revision 5.1.1 Ordinary Shares as of 16 June 2021/1

Name Class Number Percentage of total Percentage of of shares of shares number total of outstanding voting rights shares

I. the Offeror 1. Gulf Energy Development Public Ordinary Shares 606,878,314 18.93 18.93 Company Limited II. Persons in the same group of the Ordinary Shares - - - Offeror III. Related parties under Section 258 of Ordinary Shares - - - the Offeror Total 606,878,314 18.93 18.93 Note: /1 In the case that the Offeror did not additionally acquires INTUCH shares through its purchase of shares on the SET from 16 on 25 and to 28 June 2021, the Offeror will disclose most updated information on a number of INTUCH shares and shareholding percentage held by the Offeror prior to the date on which the Tender Offer for Securities of INTUCH becomes effective. 7. Part 2 Page 21 Clause 5.2 Sources of funds used by the Offeror for the Tender Offer

Original In the case that all the Offerees sell all of the remaining ordinary shares in this Tender Offer, excluding 606,878,314 ordinary shares in the Business held by the Offeror as of 16 June 2021, the funds required for the Tender Offer for all of the remaining ordinary shares of the Business, will be equal to THB 168,981,815,145 (One Hundred and Sixty Eight Billion Nine Hundred and Eighty One Million and Eight Hundred and Fifteen Thousand and One Hundred Forty Five Baht.) The full amount of the source of funds for this Tender Offer will come from borrowings from the financial institutions. In the case that the Offeror acquires additional securities of INTUCH from its investment through the SET on 25 and 28 June 2021, the amount that the Offeror will need for this Tender Offer for Securities of INTUCH will reduce and the funds from the financial institutions mentioned above will still be sufficient for this Tender Offer for Securities of INTUCH. Revision In the case that all the Offerees sell all of the remaining ordinary shares in this Tender Offer, the Offeror shall make a tender offer for all remaining 2,599,720,233 (Two Billion Five Hundred and Ninety Nine Million and Seven Hundred and Twenty Thousand and Two Hundred and Thirty Three) ordinary shares of the Business, representing 81.07 per cent of the total issued and paid-up shares of the Business and of the total voting rights of the Business (excluding 606,878,314 ordinary shares in the Business held by the Offeror as of 16 June 2021)., tThe funds required for the Tender Offer for all of the remaining ordinary shares of the Business, will be equal to THB 168,981,815,145 (One Hundred and Sixty Eight Billion Nine Hundred and Eighty One Million and Eight Hundred and Fifteen Thousand and One Hundred Forty Five Baht.) The full amount of the source of funds for this Tender Offer will come from borrowings from the

financial institutions. 12 financial institutions have issued fund confirmation letters stating that the financial institutions have approved loan facilities to the Offeror for the purpose of Tender Offer for Securities of INTUCH in the amount of THB 172,682,180,000 (One Hundred and Seventy Two Billion Six Hundred and Eighty Two Million and One Hundred and Eighty Baht)1. In this regard, the Offeror will use its cash flows from operation, its working capital and dividend received from the Business in accordance with dividend policy of the Business during the period of 12 months after the Offer Period as sources of fund for repayment of such loan facilities. In addition, the Offeror may consider procuring external sources of funds including but not limited to issuance of bond. In the case that the Offeror acquires additional securities of INTUCH from its investment through the SET on 25 and 28 June 2021, the amount that the Offeror will need for this Tender Offer for Securities of INTUCH will reduce and the funds from the financial institutions mentioned above will still be sufficient for this Tender Offer for Securities of INTUCH. 8. Part 2 Page 21 Clause 5.3 Plan to sell shares of the Business

Original As of the Tender Offer date, the Offeror has no intention to sell or transfer any significant number of the Business’s securities during the period of 12 months after the Offer Period unless one of the following events occurs; 1. the Offeror is obligated to do so by any relevant law or regulation that is effective during such period 2. the Offeror sells or transfers shares of the Business to persons under Section 258 of the Securities and Exchange Act B.E. 2532 (1992) 3. For the purpose of corporate restructuring which resulted from shareholder’s meeting approval of the Business 4. The Offeror may sell some of the Business’s securities as it deems appropriate in order to decrease its financial burden or when it is required to make the principal repayment earlier or forced of collateral after the terms of the credit agreement are not met Revision As of the Tender Offer date, the Offeror has no intention to sell or transfer any significant number of the Business’s securities during the period of 12 months after the Offer Period unless one of the following events occurs; 1. the Offeror is obligated to do so by any relevant law or regulation that is effective during such period 2. the Offeror sells or transfers shares of the Business to persons under Section 258 of the Securities and Exchange Act B.E. 2532 (1992)

1 Including loan facility in US dollar currency, which was converted into THB using an average exchange rate of 30.99334 THB/USD as at 16 June 2021 (Source: Bank of Thailand) 14

3. For the purpose of corporate restructuring which resulted from shareholder’s meeting approval of the Business in the future 4. The Offeror may sell some of the Business’s securities as it deems appropriate in order to decrease its financial burden or when it is required to make the principal repayment earlier or forced of collateral after the terms of the credit agreement are not met 9. Part 3 Page 8 Clause 1.4.1 Shareholding structure before making Tender Offer

Original Shareholding structure before making Tender Offer List of top 10 shareholders on the latest shareholders register book of the Business as of 23 February 2021, which is the latest book closing date.

Name1/ Amount of % of issued % of total Shares and paid-up voting rights (Shares) shares 1. Singtel Global Investment Pte. Ltd. 673,348,264 21.00 21.00 2. Gulf Energy Development Public Company Limited2// 505,918,114 15.78 15.78 3. Thai NVDR Company Limited 463,009,866 14.44 14.44 4. The Hongkong and Shanghai Banking Corporation Limited 166,753,460 5.20 5.20 5. South East Asia UK (Type C) Nominees Limited 45,803,886 1.43 1.43 6. Social Security Office 43,645,100 1.36 1.36 7. State Street Europe Limited 33,219,794 1.04 1.04 8. The Bank of New York Mellon 31,611,600 0.99 0.99 9. Mr. Permsak Kengmana 31,023,100 0.97 0.97 10. GIC PRIVATE LIMITED 21,620,700 0.67 0.67 Total 2,015,953,884 62.87 62.87 Source: SET website Note: 1/ Do not group persons who have same family name or related persons 2/ As of 16 June 2021, the Offeror held 606,878,314 ordinary shares of the Business or accounting for 18.93% of issued and paid-up shares of the Business or accounting for 18.93% of the total voting rights of the Business. In the case that the Offeror additionally acquires INTUCH shares from 16 June 2021 to 28 June 2021, the Offeror will disclose most updated information on a number of INTUCH shares and shareholding percentage held by the Offeror as of the date prior to the date on which the Tender Offer for Securities of INTUCH becomes effective. Revision Shareholding structure before making Tender Offer List of top 10 shareholders on the latest shareholders register book of the Business as of 23 February 2021, which is the latest book closing date.

Name1/ Amount of % of issued % of total Shares and paid-up voting rights (Shares) shares 1. Singtel Global Investment Pte. Ltd. 2/ 673,348,264 21.00 21.00 2. Gulf Energy Development Public Company Limited2/3/ 505,918,114 15.78 15.78 3. Thai NVDR Company Limited 463,009,866 14.44 14.44 4. The Hongkong and Shanghai Banking Corporation Limited 166,753,460 5.20 5.20 5. South East Asia UK (Type C) Nominees Limited 45,803,886 1.43 1.43 6. Social Security Office 43,645,100 1.36 1.36 7. State Street Europe Limited 33,219,794 1.04 1.04 8. The Bank of New York Mellon 31,611,600 0.99 0.99 9. Mr. Permsak Kengmana 31,023,100 0.97 0.97 10. GIC PRIVATE LIMITED 21,620,700 0.67 0.67 Total 2,015,953,884 62.87 62.87 Source: SET website Note: 1/ Do not group persons who have same family name or related persons 2/ Singtel Global Investment Pte. Ltd. is an indirect subsidiary of Singapore Telecommunications Limited. Singapore Telecommunications Limited’s principal business activities consist of the operation and provision of telecommunications systems and services, and investment holding, and it was owned by Temasek Holdings Pte. Ltd. at 50.29% as of 8 June 2021 (Source : Form 56-1 One report for year 2020 of INTUCH and annual report for year 2021 of Singapore Telecommunications Limited) 23/ As of 16 June 2021, the Offeror held 606,878,314 ordinary shares of the Business or accounting for 18.93% of issued and paid-up shares of the Business or accounting for 18.93% of the total voting rights of the Business. In the case that the Offeror did not additionally acquires INTUCH shares through its purchase of shares on the SET from 16 June 2021 to 28 June 2021, the Offeror will disclose most updated information on a number of INTUCH shares and shareholding percentage held by the Offeror as of the date prior to the date on which the Tender Offer for Securities of INTUCH becomes effective. 10. Part 3 Page 9 Clause 1.5 The Board of Director as of Tender Offering date and potential structure after making Tender Offer (No.2 The Board of Directors of the Business after the Tender Offer)

Original As of the date that the Tender Offer is complete, the Offeror expects that the Board of Directors of the Business will not be changed from as of 16 June 2021 which is as follows;

However, the Offeror may consequently nominate persons as directors and/or independent directors as appropriate in the best interest of the Business, subject to the proportion of shareholding in the Business after the Tender Offer and as deemed appropriate in compliance with relevant regulations. Revision As of the date that the Tender Offer is complete, the Offeror expects that the Board of Directors of the Business will not be changed from as of 16 June 2021 which is as follows;

Name Position 1. Mr. Kan Trakulhoon Chairman of the Board of Directors / Independent Director 2. Mr. Anek Pana-apichon Director / Chief Executive Office 3. Miss Jeann Low Ngiap Jong Director 4. Mr. Arthur Lang Tao Yih Director 5. Mr. Somprasong Boonyachai Director 6. Mr. Somchai Supphatada Independent Director / Chairman of the Audit and Risk Committee 7. Miss Sopawadee Lertmanaschai Independent Director/ Audit and Risk Committee 8. Miss Manida Zinmerman Independent Director / Audit Committee and Risk Committee 9. Mr. Prasert Bunsumpun Independent Director 10. Mr. Chakkrit Parapuntakul Independent Director However, the Offeror may consequently nominate persons as directors and/or independent directors as appropriate in the best interest of the Business, subject to the proportion of shareholding in the Business after the Tender Offer and as deemed appropriate in compliance with relevant regulations. However, as of the date of Tender Offer, the Offeror cannot specify the number of directors and names of directors, which may be changed after the Tender Offer. 11. Part 3 Page 11 Clause 2.2.4 Plan on changing corporate structure, management, and recruitment

Original The Offeror may nominate persons as directors and/or independent directors as appropriate in the best interest of the Business, subject to the proportion of shareholding in the Business after the Tender Offer and as deemed appropriate in compliance with relevant regulations. As of the date of submission of the Tender Offer, the Offeror does not have plan to change management structure of the Business during the period of 12 months after the end of the Offer Period. However, if there is any change in the management structure, such change needs to obtain the approval from the board of directors of the Business and proceed in accordance with relevant procedures and regulations. In addition, if the Offeror nominates its representatives as directors or management of INTUCH, the Offeror will disclose such appointment of director or management of INTUCH via SET website and annual report of the Offeror.

Revision “The Offeror may nominate persons as directors and/or independent directors as appropriate in the best interest of the Business afterwards, subject to the proportion of shareholding in the Business after the Tender Offer and as deemed appropriate in compliance with relevant regulations. As of the date of submission of the Tender Offer, the Offeror cannot specify the number of directors and names of directors, which may be changed after the Tender Offer, and the Offeror does not have plan to change management structure of the Business during the period of 12 months after the end of the Offer Period. However, if there is any change in the management structure, such change needs to obtain the approval from the board of directors of the Business and proceed in accordance with relevant procedures and regulations. In addition, if the Offeror nominates its representatives as directors or management of INTUCH, the Offeror will disclose such appointment of director or management of INTUCH via SET website and annual report of the Offeror. 12. Part 3 Page 12 Clause 2.3 Related Party Transaction

Original “…During the period of 12 months after the end of the Offer Period, the Offeror and persons under section 258 of the Offeror may have transactions with the Business and its subsidiaries which are the ordinary business transactions to be consistent with business plan of the Business after the Tender Offer. If the Offeror and persons under section 258 of the Offeror have any related party transaction with the Business and its subsidiaries in the future, the Offeror will arrange to ensure that the Business and its subsidiaries proceeds in compliance with the rules and regulations of the SEC, the Capital Market Supervisory Board and the SET as well as any laws, rules and regulations imposed by the relevant agencies and authorities.” Revision “…During the period of 12 months after the end of the Offer Period, the Offeror and persons under section 258 of the Offeror may have other additional related party transactions with the Business and its subsidiaries which are the ordinary business transactions to be consistent with business plan of the Business after the Tender Offer. If the Offeror and persons under section 258 of the Offeror have any related party transaction with the Business and its subsidiaries in the future, the Offeror will arrange to ensure that the Business and its subsidiaries proceeds in compliance with the rules and regulations of the SEC, the Capital Market Supervisory Board and the SET as well as any laws, rules and regulations imposed by the relevant agencies and authorities.”

Please be informed and please consider accordingly. Yours Sincerely,

Gulf Energy Development Public Company Limited

- Mrs. Porntipa Chinvetkitvanit - - Mr. Boonchai Thirati - (Mrs. Porntipa Chinvetkitvanit) (Mr. Boonchai Thirati) Authorized Person Authorized Person The Offeror

Bualuang Securities Public Company Limited

- Vararatana Jutimitta - -Soravis Krairiksh- (Mr. Vararatana Jutimitta) (Mr. Soravis Krairiksh) Authorized Person Authorized Person The Tender Offer Preparer