Siam Cement Public : Appointment of Members of Sub-Committees

-Translation-

CSO S65-071

March 30, 2022

ToPresident

The Stock Exchange of Thailand

Subject: Appointment of Members of Sub-Committees

The Siam Cement Public Company Limited (or "SCC") hereby announces that, on March 30, 2022, its Board of Directors Meeting has resolved to appoint the existing three directors of whom the 2022 Annual General Meeting of Shareholders re- elected as directors to retain their office for another term, another newly elected director, by the aforesaid Shareholders Meeting in replacement of those retired by rotation in 2022 and the other three newly elected directors, by the increase of the number of directors to fifteen and the amendment of the Company's Articles of Association.

The Board of Directors Meeting, held on Wednesday, March 30, 2022, resolved to appoint the elected directors by the Shareholders Meeting resolution to be the members of SCC's sub-committees. This appointment has become effective from March 30, 2022, onwards as the following details:

Names

Positions

• 1. Police Colonel Thumnithi Wanichthanom

  Director,

• 2. Mr. Pasu Decharin

  Member of the CSR Committee for Sustainable Development Independent Director,

  Chairman of the Audit Committee,

• 3. Mrs. Parnsiree Amatayakul

  Member of the Governance and Nomination Committee Independent Director,

• 4. Mrs. Nuntawan Sakuntanaga

  Member of the Audit Committee, Member of the Remuneration Committee Independent Director,

• 5. Lieutenant Colonel Somchai Kanchanamanee

  Member of the Audit Committee Director,

• 6. Mr. Suphachai Chearavanont

  Member of the CSR Committee for Sustainable Development Independent Director,

• 7. Miss Jareeporn Jarukornsakul

Member of the Governance and Nomination Committee Independent Director,

Member of the Governance and Nomination Committee

The list of names and titles of SCC's directors is provided in the attachment.

Please be informed accordingly.

Yours faithfully,

-signed by-

(Mr. Roongrote Rangsiyopash)

President & CEO

The Siam Cement Public Company Limited

cc: Secretary General, Office of Securities and Exchange Commission

The Siam Cement Public Company Limited

List of Members of the Board of Directors as of March 30, 2022

Names of Directors	Titles
1. Air Chief Marshal Satitpong Sukvimol	Chairman, Member, the CSR Committee for Sustainable Development
2. Mr. Chumpol NaLamlieng	Independent Director Vice Chairman, Chairman, the Governance and Nomination Committee
3. Mr. Kasem Watanachai	Director Chairman, the CSR Committee for Sustainable Development
4. Lieutenant Colonel Somchai Kanchanamanee	Director, Member, the CSR Committee for Sustainable Development
5. Police Colonel Thumnithi Wanichthanom	Director Member, the CSR Committee for Sustainable Development
6. Mr. Kan Trakulhoon	Director Member, the CSR Committee for Sustainable Development
7. Mr. Prasarn Trairatvorakul	Independent Director Chairman, the Remuneration Committee
8. Mr. Pasu Decharin	Independent Director Chairman, the Audit Committee, Member, the Governance and Nomination Committee
9. Mrs. Parnsiree Amatayakul	Independent Director Member, the Audit Committee, Member, the Remuneration Committee
10. Mr. Cholanat Yanaranop	Director, Member, the Remuneration Committee
11. Mr. Thapana Sirivadhanabhakdi	Independent Director Member, the Remuneration Committee
12. Mrs. Nuntawan Sakuntanaga	Independent Director, Member, the Audit Committee
13. Mr. Suphachai Chearavanont	Independent Director, Member, the Governance and Nomination Committee.
14. Miss Jareeporn Jarukornsakul	Independent Director, Member, the Governance and Nomination Committee.
15. Mr. Roongrote Rangsiyopash	President & CEO Member, the CSR Committee for Sustainable Development