PTT : Notice of effectiveness of PTT Oil and Retail Business Public Company Limited's Registration Statement and Draft Prospectus (Remark update)

(Translation)

No. 80000001/13

14 January 2021

Subject: Notice of effectiveness of PTT Oil and Retail Business Public Company Limited's Registration Statement and Draft of Prospectus

To: President

The Stock Exchange of Thailand

Reference is made to the disclosure of PTT Public Company Limited ("PTT"), from time to time, regarding the Initial Public Offering (" IPO") of the newly issued ordinary shares of PTT Oil and Retail Business Public Company Limited ("OR"), a subsidiary of PTT.

PTT would like to further inform that OR's Registration Statement and Draft of Prospectus, as filed with the Office of the Securities and Exchange Commission, become effective on 14 January 2021, and its IPO newly issued ordinary shares'preliminary price range is Baht 16 - 18 per share. OR will announce the final offering price at the latest within 9. 00 am. on 3 February 2021 on OR's website at

1. pttor. comand through PTT' s notification to the Stock Exchange of Thailand' s website at www.set.or.th, unless in case of any other unforeseen event occurs.

In addition, the details with respect to the subscription of OR's newly issued ordinary shares

are as follows:

1. The eligible shareholders of PTT will subscribe OR's IPO newly issued ordinary shares at the allocated portion of their pre-emptive rights during 25th - 28th January 2021 in three methods via (1) online subscription on the website at www. kasikornbank. com/ kmyinvest( 2) the subscription form submission to the offices of securities companies that shareholders have securities trading account opened with or at the headquarter of Kasikorn Securities Public Company Limited, located at Phahonyothin branch 400/22 Phahonyothin Rd, Samsen Nai Sub-district, Phaya Thai District, Bangkok, and ( 3) the voice recording through telephone ( only available for the subscriber who has securities trading account with

Kasikorn Securities Public Company Limited) . The subscription agent reserves the right not to accept / subscription…

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subscription form and subscription documents sent by registered post or from nationwide commercial banks' branches.

2. The retail investors will subscribe OR's newly issued ordinary shares during 24 January 2021 till 12. 00 pm. (noon time) on 2 February 2021 through Selling Agents which comprise of Kasikorn Bank Public Company Limited, Bangkok Bank Public Company Limited, and Krung Thai Bank Public Company Limited. There are two subscription methods which are (1) to register on the online subscription as per details that each selling agent specifies and ( 2) submit the subscription form to the offices and branches of Selling Agents within business day and operating hours.

In addition, in order to mitigate the risk from COVID-19 pandemic outbreak, (1) the eligible shareholders of PTT who would like to submit subscription form at the headquarter of Kasikorn Securities Public Company Limited (located at Phahonyothin branch, 400/22 Phahonyothin Rd, Samsen Nai Sub- district, Phaya Thai District, Bangkok) and (2) retail investors, who would like to use service at Kasikorn Bank Public Company Limited's branch to subscribe OR's IPO shares should reserve a queue online in advance. Please consider information related to booking queue online at https://www.kasikornbank.com/th/branch-register/Pages/index.aspxfrom 18 January 2021 onwards.

The eligible shareholders of PTT, the retail investors, and groups of investors shall read more on the Registration Statement and Prospectus of OR filed with the Office of the Securities and Exchange Commission at www.sec.or.thand OR's website at www.pttor.com.

Please be informed accordingly.

Yours sincerely,

(Mr. Auttapol Rerkpiboon)

President & Chief Executive Officer

Investor Relations Department

Tel [phone]

Fax [phone]

THIS DOCUMENT DOES NOT CONSTITUTE AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER TO BUY ANY SECURITIES IN THE UNITED STATES OR IN ANY OTHER JURISDICTION IN WHICH SUCH OFFERS OR SALES MAY BE UNLAWFUL. THE ORDINARY SHARES OF OR TO BE OFFERED HAVE NOT BEEN, AND WILL NOT BE, REGISTERED UNDER THE U. S. SECURITIES ACT OF 1933, ( AS AMENDED) (" THE " U. S. SECURITIES ACT"), OR WITH ANY SECURITIES REGULATORY AUTHORITY OF ANY STATE OR OTHER JURISDICTION OF THE UNITED STATES AND MAY NOT BE OFFERED OR SOLD, DIRECTLY OR INDIRECTLY, INTO THE UNITED STATES UNLESS SUCH ORDINARY SHARES ARE SO REGISTERED UNDER THE U. S. SECURITIES ACT OR AN EXEMPTION FROM THE REGISTRATION REQUIREMENTS IS AVAILABLE UNDER THE U.S. SECURITIES ACT.