PTT Oil and Retail Business Public Company Limited informed that the Board of Directors' Meeting No. 5/2024 held on May 21, 2024 passed the resolutions as follows: To appoint Mr. Chadil Chavanalikikorn in replacement of Mr. Auttapol Rerkpiboon, the resigned director. The newly appointed director shall remain in the term of office for the remaining term of office of the replaced director.

To elect Mr. Somchai Lertsutiwong in replacement of Mr. Auttapol Rerkpiboon, the resigned director. To amendment of Sub-Committees as follows: The Audit Committee: Mr. Chintapun Dansubutra to be a Chairman of the Audit Committee (Original from a Member of the Audit Committee) in replacement of Dr. Kobsak Pootrakool, the resigned director. Prof. Dr. Parichart Sthapitanonda to be a Member of the Audit Committee.

The Corporate Governance and Sustainability Committee: Mr. Tawatchai Cheevanon to be a Chairman of the Corporate Governance and Sustainability Committee (Original from a Member of the Corporate Governance and Sustainability Committee) in replacement of Mr. Chintapun Dansubutra Dr. Chaichana Mitrpant to be a Member of the Corporate Governance and Sustainability Committee This has been effective from May 21, 2024 onwards. Therefore, the list of the Company's Board of Directors and the Sub-Committees of the Company as of May 21, 2024 are as follows: Mr. Somchai Lertsutiwong-Independent Director and Chairman of Director. Mr. Chintapun Dansubutra- Independent Director /Chairman of the Audit Committee and a Member of the Corporate Governance and Sustainability Committee.

Prof. Dr. Bundhit Eua-arporn- Independent Director and Chairman of the Nomination and Remuneration Committee. Dr. Chaichana Mitrpant-Independent Director /Chairman of the Enterprise Risk Management Committee and a Member of the Corporate Governance and Sustainability Committee. Mr. Tawatchai Cheevanon-Independent Director /Chairman of the Corporate Governance and Sustainability Committee and a Member of the Nomination and Remuneration Committee.

Prof. Dr. Parichart Sthapitanonda-Independent Director /a Member of the Audit Committee and a Member of the Corporate Governance and Sustainability Committee. Pol. Lt.

Gen. Jirabhop Bhuridej-Independent Director and a Member of the Enterprise Risk Management Committee. Mr. Supat Metheeworapote-Independent Director /a Member of the Audit Committee and a Member of the Nomination and Remuneration Committee.

Mr. Theeraj Athanavanich-Director and a Member of the Nomination and Remuneration Committee. Miss Nantika Thangsuphanich-Director and a Member of the Corporate Governance and Sustainability Committee. Mr. Terdkiat Prommool-Director and a Member of the Nomination and Remuneration Committee.

Mr. Chadil Chavanalikikorn-Director. Dr. Buranin Rattanasombat-Director and a Member of the Enterprise Risk Management Committee. Mr. Disathat Panyarachun-Director /Secretary to the Board and a Member of the Enterprise Risk Management Committee.