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SINGAPORE TELECOMMUNICATIONS LIMITED (Incorporated in the Republic of Singapore) Company Registration Number: 199201624D

ANNOUNCEMENT

Singapore Telecommunications Limited (“Singtel”) refers to the announcement dated 19 April 2021 issued by Gulf Energy Development Public Company Limited (“Gulf”) relating to Gulf’s intention to (1) invest in all ordinary shares of Intouch Holdings Public Company Limited (“INTUCH”) through a conditional voluntary tender at the tender offer price of THB 65.00 per share, and (2) make a tender offer for all securities of Advanced Info Service Public Company Limited (“ADVANC”) in the case where Gulf is required to do so in accordance with the chain principle.

Singtel views its stakes in INTUCH and ADVANC as strategic investments and we believe in the long term outlook of the businesses.

Singtel is reviewing its strategic options to ensure that INTUCH and ADVANC shareholders get full benefit of the intrinsic value of the businesses and will, in compliance with the Corporate Disclosure Policy of the SGX-ST Listing Manual, make the relevant disclosures (if any) at the appropriate time.

Singtel wishes to advise its shareholders to refrain from taking any action in respect of their shares in Singtel which may be prejudicial to their interests, and to exercise caution when dealing in the shares of Singtel.

Issued by Singapore Telecommunications Limited on 19 April 2021.

Singapore Telecommunications Limited Company registration number: 199201624D 31 Exeter Road, Comcentre Singapore 239732 Tel: +65 6838 3388 Fax: +65 6732 8428 www.singtel.com

-Translation-

INTUCH-CPL 008/2021

19 April 2021

Subject: Acknowledgement of the Tender Offer for all securities of Intouch Holdings Plc. for conditional voluntary tender offer and/or through trading on the Stock Exchange of Thailand or any other means

To: The President The Stock Exchange of Thailand

We acknowledged that on 19 April 2021 Gulf Energy Development Public Company Limited (GULF) wishes to make a conditional voluntary tender offer of all securities of Intouch Holdings Plc. at the price of Baht 65 per share, details of which appeared in GULF’s news dated 19 April 2021, CS09/2021.

Yours faithfully,

-Signed-

Jitchai Musikabutr (Mr.) Company Secretary Intouch Holdings Plc.

Compliance Office Tel: 02-118 6936, 6940

(Translation)

No. AIS-CP 011/2021

19 April 2021

Subject: Clarification of the voluntary tender offer for all securities of Advanced Info Service Public Company Limited (“ADVANC”) Attention: President The Stock Exchange of Thailand

Pursuant to the announcement of Gulf Energy Development Public Company Limited (“GULF”) on April 19, 2021 which has invested in Intouch Holdings Public Company Limited (“INTUCH”) representing 18.93 percent of the total issued and paid-up shares. The Board of GULF has resolution to execute conditional voluntary offer of all INTUCH’s ordinary shares. In accordance with the rules on acquiring a significant degree of control over a juristic person with an existing shareholding in the business (the “Chain Principle”), if GULF acquired 50 per cent or more of the total voting rights in INTUCH, GULF will commence the tender offer for all securities of Advanced Info Services Public Company Limited (“ADVANC”) at the tender offer price of 122.86 Baht.

Please be informed accordingly,

Your Faithfully,

-signed-

(Mr. Tee Sriumpornroj) Chief Finance Officer Advanced Info Service Public Company Limited