Attachments: 4 Procedures for Registration & Attending the 2023 Annual General Meeting of Shareholders via Electronic Means (e-Meeting) and proxy granting

Attachment 4

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Procedures for Registration & Attending the 2023 Annual General Meeting of Shareholders

via Electronic Means (e-Meeting) and Proxy granting

PTT would like to inform the procedure of attending the Annual General Meeting of Shareholder via electronic means and proxy granting as follows.

1. Pre-registrationprocedures, Necessary documents and Appointment of proxy

Requisition to attend the e-Meeting

• shareholder or proxy who wish to attend the meeting via electronic means (e-Meeting) can submit their request via the pre-registration web browser at https://register.pttdigital.com/PTT/registerbaseor scan this QR Code from March 29, 2023 or until the meeting adjourns.
• Once the shareholder or proxy access the system, please proceed with the following;
• 1. Attendance in person

1. Fill in Shareholder's Registration No. as specified in Notification of Meeting (Attachment 6)
2. Fill in identification card number/passport number (for non-Thais).
3. Fill in name - surname of Shareholder
4. Fill in email address to receive the username and password for attending the meeting.
5. Fill in an available telephone number of shareholder
6. Enclose a copy of Notice of Meeting (Attachment 6)
7. Enclose a copy of the valid Identification Card, or Government Identification Card, or Passport (for non-Thais), certified as true and correct copy. In case of any changes of name and/or surname, evidence of such changes, certified as true and correct copy shall be enclosed.

1. Appointment of Proxy: If the appointing shareholder is an ordinary person;

1. Section 1: Fill in appointing shareholder's information as described in (1)
2. Select Proxy form A or B from dropdown list
3. Section 2: Fill in proxy holder's information i.e. name - surname, email address to receive the username and password for attending the meeting and telephone number of proxy holder.
4. Enclose the proxy form (Attachment 7) in which precisely filled in and signed by grantor and proxy holder. PTT recommends using Proxy Form B and specify your vote(s) for each item. PTT will be responsible for the Duty Stamp of Baht 20 to be affixed to the proxy form.
5. Enclose a copy of Notice of Meeting (Attachment 6)

In the event of technical difficulties in relation to the Pre-Registration or the e-Meeting system

Please contact: [phone]

during March 29 - April 12, 2023, from 8:30 AM to 5:30 PM, except Public holidays.

Attachment 4

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1. Enclose a copy of the grantor and proxy holder valid Identification Card, or Government Identification Card, or Passport (for non-Thais), certified as true and correct copy by the grantor and proxy holder. In case of any changes of name and/or surname of grantor, evidence of such changes, certified as true and correct copy shall be enclosed.
2. In case Shareholders are minors, their father, mother or guardians shall attend the meeting in person or by proxy. The aforementioned persons shall certify and submit a copy of house registration of the minor, a copy of marriage certification, a copy of certificate of legitimation of child, or a copy of court order with regards to an appointment of guardian (if any) as additional evidence. In case of proxy, a copy of any of the Required Documents as specified in 2.6 shall be required.
3. In case Shareholders deceased, the administrator of the deceased's estate shall attend the meeting in person or by proxy. The aforementioned person shall certify and submit a copy of court order with regards to an appointment of administrator of the deceased's estate as additional evidence. In case of proxy, a copy of any of the Required Documents as specified in 2.6 shall be required.
4. In case Shareholders are incompetent persons or quasi-incompetentpersons,the guardian or curator shall attend the meeting in person or by proxy. The aforementioned person shall certify or submit a copy of court order with regards to an appointment of guardian or curator as additional evidence. In case of proxy, a copy of any of the Required Documents as specified in 2.6 shall be required.

1. Proxy to the Independent Director

If a shareholder prefers to appoint PTT's independent directors to be his or her proxy;

3.1 Submit a request via the pre-registration web browser as described in (2) , mark  proxy to the Independent Director and specify one of following PTT's independent directors in the dropdown list as proxy namely; (brief profile of Independent directors in attachment 5).

1.	GEN. Teerawat Boonyawat	Independent Director/ Chairman of the Remuneration Committee or;
2.	Assoc. Prof. Dr. Chayodom Sabhasri	Independent Director/ Member of the Audit Committee or;
3.	Mr. Chansin Treenuchagron	Independent Director/ Member of the Remuneration Committee

1. Enclose the proxy form (Attachment 7) in which precisely fill in, specify one of PTT's independent directors name as listed in 3.1 as proxy and sign the proxy form. PTT recommends using Proxy Form B and specify your vote(s) for each item. PTT will be responsible for the Duty Stamp of Baht 20 to be affixed to the proxy form.
2. Enclose a copy of the grantor valid Identification Card or Government Identification Card, or Passport (for non-Thais), certified as true and correct copy. In case of any changes of name and/or surname of grantor, evidence of such changes, certified as true and correct copy shall be enclosed

In the event of technical difficulties in relation to the Pre-Registration or the e-Meeting system

Please contact: [phone]

during March 29 - April 12, 2023, from 8:30 AM to 5:30 PM, except Public holidays.

Attachment 4

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3.4 Shareholder can also submit the proxy form together with required documents specified in 3.2 and 3.3 to PTT by postage to the following address. The proxy form and required documents must be delivered to PTT by

Wednesday April 5, 2023.

To Office of President 24th floor,

PTT, 555 Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900.

(4) The shareholders are advised to review the details of the agenda items before deciding to appoint a proxy;

1. In the case that a shareholder appoints an independent director as his/her proxy and such shareholder has cast his/her vote on each agenda item on Proxy Form B in advance, PTT will record the votes of such shareholder in accordance with the votes specified on such proxy form. If the shareholder who appoints an independent director as his/her proxy does not cast his/her vote on the proxy form in advance, the independent director who has been

appointed as a proxy shall cast the votes on behalf of the shareholder as he/ she deems suitable and appropriate. (6)In case a shareholder desires to revoke the proxy, it can be done by submitting a written letter of the revocation to

PTT within Wednesday, 12 April 2023, 13.30 hrs.

1. In case PTT fails to record your votes as indicated in the proxy form, and such failure or omission causes damage to you, you will be eligible to pursue the legal proceedings.
2. Shareholders are not allowed to allocate shares to several Proxies in order to vote at the Meeting. The shareholders shall authorize only one Proxy to cast the votes by all the shares held by such shareholders. Authorization of less than the total number of shares is prohibited, except for the Custodian appointed by the Foreign Investor in accordance with Proxy Form C.
3. In order to comply with Personal Data Protection Act B.E. 2562, we would request the grantor to cross out, conceal, or do anything to conceal certain data namely Religions and/or Blood Type (the "Required Document"). In case that the grantor does not cross out, conceal, or do anything to conceal such data, PTT reserves the right to do the aforementioned.

Please find the pre-registration Manual to attend e-Meetinghttps://bit.ly/3kwNhIDOr scan this QR Code

If appointing shareholder is Juristic person or a Custodian

shareholder may designate a proxy, a third party, or PTT's independent director (Attachment 5), to attend and vote on the shareholder's behalf. PTT recommends shareholder to specify his/her vote(s) in each agenda item in advance and provide email address of proxy holder to receive the username and password for attending the meeting in the proxy form (Attachment 7). Online pre-registration is not required for juristic person or a custodian.

The proxy form together with following required documents shall be delivered to PTT via postage by Wednesday April 5, 2023.

In the event of technical difficulties in relation to the Pre-Registration or the e-Meeting system

Please contact: [phone]

during March 29 - April 12, 2023, from 8:30 AM to 5:30 PM, except Public holidays.

Attachment 4

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Office of President 24th floor, PTT Public Company Limited (PTT) 555 Vibhavadi Rangsit Road, Chatuchak, Bangkok 10900

1 Juristic Persons

(1.1) Notice of Meeting (Attachment 6)

(1.2) The proxy form shall be signed by the authorized person(s), according to its Affidavit with the seal of the juristic person being affixed (if any), and by the proxy.

(1.3) Juristic Persons incorporated in Thailand, please enclose

1. A copy of the latest version of the Affidavit of the juristic person, issued by the Ministry of Commerce or the relevant government authority (not longer than 60 days prior to the meeting date). Such document must be certified as true and correct copy by the authorized person(s), with the juristic person's seal being affixed (if any)
2. A copy of any of the Required Documents of the authorized person(s) i.e. valid Identification Card or Government Identification Card, or Passport (for non-Thais),certified as true and correct copy with cross-outor concealed data.
3. A copy of any of the Required Documents of Proxy holder i.e valid Identification Card or Government Identification Card, or Passport (for non-Thais),certified as true and correct copy with cross-outor concealed data.

(1.4) Foreign Juristic Persons, please enclose

1. A copy of the latest version of the Affidavit of the juristic person, issued by the relevant government authority of the country where the juristic person is incorporated which has been notarized by a notary public or competent government authority. The date of issue shall not exceed 6 months from the date of the meeting and
2. A copy of any of the Required Documents of the authorized person(s) as indicated in 1.3.2
3. If the copy of the latest version of Affidavit that has been notarized by the notary public or the competent government authority is presented, such document must be certified as true and correct copy by the authorized person(s) of that juristic person, together with its seal being affixed (if any).
4. A copy of any of the Required Documents of Proxy holder as indicated in 1.3.3

(1.5) For foreign juristic persons, unless the original document is in English language, the English translation certified as true and correct translation by the authorized person(s) shall also be presented.

2 If the grantor is a custodian,please enclose (2.1) Notice of Meeting (Attachment 6)

In the event of technical difficulties in relation to the Pre-Registration or the e-Meeting system

Please contact: [phone]

during March 29 - April 12, 2023, from 8:30 AM to 5:30 PM, except Public holidays.

Attachment 4

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(2.2) The power of attorney of such grantor authorizing the custodian

(2.3) A copy of the confirmation letter or business license showing that it can act as the custodian.

(2.4) Proxy Form C (for shareholders who are foreign investors and appoint a custodian in Thailand) signed by the authorized person

(2.5) Supporting documents

1. If the appointing shareholder is an ordinary person, please enclose a copy of the valid Identification Card or Government Identification Card, or Passport (for non-Thais),certified as true and correct copy by the grantor. In case of any changes of name and/or surname of grantor, evidence of such changes, certified as true and correct copy shall be enclosed.
2. If the appointing shareholder is a juristic person, please enclose supporting documents as indicated in 1

3. Each copy of the document must be certified as true and correct copy

4 . In case of sub-attorney, all complete copies of power of attorney authorizing the attorney to attend the meeting and sub-attorney must be submitted. In any case, the Required Documents of grantor(s) and attorney(ies) as specified in 2.5.1 (a) shall be required

5 . Shareholders are not allowed to allocate shares to several Proxies in order to vote at the Meeting. The shareholders shall authorize only one Proxy to cast the votes by all the shares held by such shareholders. Authorization of less than the total number of shares is prohibited, except for the Custodian appointed by the Foreign Investor in accordance with Proxy Form C.

6. In order to comply with Personal Data Protection Act B.E. 2562, we would request the grantor to cross out, conceal, or do anything to conceal certain data namely Religions and/or Blood Type (the "Required Document"). In case that the grantor does not cross out, conceal, or do anything to conceal such data, PTT reserves the right to do the aforementioned.

1. Preparation before attending the e-Meeting

After complete the pre-registration and email verification in step (A), PTT will verify the eligible shareholders as of the Record Date on Friday March 03, 2023 as well as the correctness and completeness of documents, once the verification is approved, shareholders will receive an email informing meeting details in 4 parts as follows:

1. e-Meetinglink via Application Cisco Webex Meeting.
2. Username and Password to log in to E-Voting for voting.
3. Link for download and install the Cisco Webex Meeting Application.
4. Cisco Webex Meeting User Guide: Join Meetings for online voting (E- voting).

In the event of technical difficulties in relation to the Pre-Registration or the e-Meeting system

Please contact: [phone]

during March 29 - April 12, 2023, from 8:30 AM to 5:30 PM, except Public holidays.