INFORMATION OF DIRECTORS OF MAJOR SUBSIDIARIES OF THE CORE BUSINESSES Cement-Building Materials Business The Board of Directors SCG Building Materials Company Limited Mr. Roongrote Rangsiyopash Age 57 years Position • Director the Thai Economy E2 Competitive Education/Training Workforce • MBA, Harvard Business School, U.S.A • Since 2016 Council Member, World Business • M.S. (Industrial Engineering), University of Texas at Council for Sustainable Development Arlington, U.S.A. • Since 2016 Member, Asia Business Council • B.E. (Mining), Chulalongkorn University • Since 2016 Committee, Engineer Division of the Expertise Anandamahidol Foundation • Core Business or Industry of SCG • Since 2016 Director, SCG Foundation • Other Large Businesses or Industries • Since 2017 Member, Sub-committee Government • Global and Regional Organization Management Administration System Development • Economics and Investment for Driving toward 4.0, Office of the • Policy Setting and Strategic Planning (Global Vision) Prime Minister • Foreign Affairs • Since 2017 Advisory Director on Industrial and • Crisis Management Organizational Phycology, Political • Marketing System Development Committee • Domestic or International Marketing (Market Insight) • Since 2017 Executive Director, The Debsirin School • Accounting / Financial Literacy Parents-Teacher Association • Finance • Since 2018 Member, Public School Educational • Human Capital Management Innovation Administration • Environmental, Social & Governance or “ESG” Development Committee Director Training (1) to support Driving Educational • Directors Accreditation Program (DAP) 2004, Reform towards Thailand 4.0 Policy Thai Institute of Directors Association • Since 2018 Director, Mrigadayavan Palace Board Member/Management of Other Listed Foundation Under the royal patronage Companies on The Stock Exchange of Thailand of HRH Princess Bejaratana Rajasuda • Since 2015 Director and President & CEO, Sirisobhabannavadi The Siam Cement Public • Since 2018 Member, Sub-committee on the Company Limited Promotion of Social Sector Position in Other Company/Organization/Institution Collaboration, Prince Chakri Award (20) Foundation • Since 2015 Member of Fund-Raising Committee • Since 2018 Honorary Advisor, The Federation of for Navamindrapobitr 84th Thai Industries Anniversary Building • Since 2019 the Executive Board on Driving Faculty of Medicine Siriraj Hospital, Reformation toward Higher Education, Mahidol University Science, Research and Innovation • Since 2015 Advisory, The Association National • Since 2020 Member, Sub-committee Government Defence College of Thailand under the Administration System Development Royal Patronage of His Majesty the King for Driving toward the future • Since 2015 Advisory Director, the National Science • Since 2020 Member, Sub-committee Evaluate the and Technology Development Board achievement of operations for • Since 2016 Director, Digital Economy and Society development, National Science and Preparation Committee Technology Development Agency • Since 2016 Head of Private Sectors, Joint Public- • Since 2020 National Reform Committee No.13: Private-People Steering Committee Culture, Sports, Labor and Human (People’s State) under the Public- Resource Development, Private Steering Committee for Driving Ministry of Tourism and Sports 028 Other Position in SCG • 2013 – 2014 Chairman of Risk Management • Chairman of non-listed companies under SCG totaling Sub-committee, Government Pension 7 companies Fund (GPF) 5-year Past Experiences and/or Remarkable Positions • 2013 – 2015 Executive Director, • 2011 – 2015 Chairman of the Board of Directors Giga Impact Initiative Board, and Executive Committee, National Science and Technology Thai British Security Printing Public Development Agency (NSTDA) Company Limited • 2015 Executive Vice President, The Siam • 2011 – 2015 Chairman, Thai Cane Paper Public Cement Public Company Limited Company Limited • 2017 – 2018 Committee, Steering Committee on • 2011 – 2015 President, SCG Paper Public the Reforming Support for THAILAND Company Limited 4.0 Policy (currently named as SCG Packaging • 2017 – 2019 Advisory, Chulalongkorn University Public Company Limited) Alumni Association • 2012 – 2015 Director, Thai Plastic and Chemicals • 2018 – 2019 Advisory, Chulalongkorn University Public Company Limited Engineering Alumni • 2013 – 2014 Expert Member, Government Pension Family Relationship among Directors and Executives Fund (GPF) Board of Directors (None) Mr. Thammasak Sethaudom Age 51 years Position • Director Board Member/Management of Other Listed Education/Training Companies on The Stock Exchange of Thailand (1) • Master of Business Administration, London Business • Since 2018 SCG Packaging Public Company School, United Kingdom (Distinction) Limited • Bachelor of Engineering, Electrical Engineering, Position in Other Company/Organization/Institution Chulalongkorn University (3) • Management Development Program, The Wharton • Since 2018 Commissioner, PT Chandra Asri School, The University of Pennsylvania, U.S.A. Petrochemical Tbk, Indonesia* • Executive Development Program, Columbia University, • Since 2019 Committee, Thai Listed Companies U.S.A. Association • Change Management, GE • Since 2020 Project Director of Central Bank • Total Quality Management for Executive, JUSE, Japan Digital Currency • Marketing for Management, Kellogg School, U.S.A. Remark: *Listed in the Stock Exchange of Indonesia • Certificate for General Bidding Committee, Other Positions in SCG Bidding Law, MPI, Vietnam • Chairman and director of SCG’s subsidiaries, associates • Leadership Coaching, APM Group and other companies which are non-listed as assigned • Innovation Management Program, Dupont, U.S.A. by the company • Orientation Course – CFO Focus on Financial Reporting 5-year Past Experiences and/or Remarkable Positions Class 3/2018 • 2000 – 2004 eCommerce and eBusiness Manager, • Advanced Management Program (AMP) Harvard Chemicals Business Business School, U.S.A. • 2004 – 2010 Business Development and Corporate Director Training (2) Planning Director, Chemicals Business • Directors Accreditation Program (DAP) 159/2019, • 2008 – 2012 Deputy General Director, Long Son Thai Institute of Directors Association Petrochemicals Company Limited • Directors Certification Program (DCP) 298/2020, • 2012 – 2018 General Director, Long Son Thai Institute of Directors Association Petrochemicals Company Limited Family Relationship among Directors and Executives (None) 029 Mr. Yuttana Jiamtragan Age 57 years Position • Director 5-year Past Experiences and/or Remarkable Positions Education/Training • 2008 – 2015 Managing Director, SCG Performance • Master of Business Administration, Chemicals Company Limited Assumption University • 2010 – 2013 Managing Director, SCG Polyolefin • Bachelor of Sciences (Chemistry), Company Limited Chulalongkorn University • 2011 – 2015 Business Group Head: Compound & • Advanced Management Program (AMP), Formulation, Chemicals Business Harvard Business School, U.S.A. • 2012 – 2016 Director, The Federation of Director Training (1) Thai Industries • Director Accreditation Program (DAP), • 2012 – 2016 Honorary Chairman, Plastic Industry 149/2018 Thai Institute of Directors Association Club, The Federation of Thai Industries Board Member/Management of Other Listed • 2012 – 2016 Advisor, Thailand Institute of Companies on The Stock Exchange of Thailand Packaging and Recycling Management (None) for Sustainable Environment (TIPMSE), Positions in Other Company/Organization/Institution The Federal of Thai Industries (5) • 2015 - 2019 Advisor, Thai Bioplastics Industry • Since 2015 Advisor, Foundation for the Promotion Association of Science and Technology Under the • 2016 - 2018 Member of the NSTDA Chair Professor Patronage of His Majesty the King Joint Committee, NSTDA Chair • Since 2016 Member of the Advisory Committee, Professor Grants Center of Excellence on Environmental • 2017 - 2019 Member of the Establishing Health and Toxicology Committee, the Research and Training • Since 2016 Director, SCG Foundation Center for Supporting Industry • Since 2020 Director, Royal Bangkok Symphony 4.0, King Mongkut’s University of Orchestra Foundation Technology North Bangkok • Since 2020 Director, Suan Luang Rama 9 • 2017 - 2019 Committee, Thai Listed Companies Foundation Association Other Positions in SCG Family Relationship among Directors and Executives • Chairman and director of SCG’s subsidiaries, associates (None) and other companies which are non-listed as assigned by the company Mr. Nithi Patarachoke Age 57 years Position • Director Board Member/Management of Other Listed Education/Training Companies on The Stock Exchange of Thailand (3) • MBA (Finance and Operations Management), • Since 2012 Director, Siam Global House Public University of Chicago, U.S.A. Company Limited • Bachelor of Engineering, Industrial Engineering, • Since 2018 Chairman of the Board of Directors, Chulalongkorn University Chairman of the Executive Committee • Advanced Management Program (AMP), and Member of the Nomination, Harvard Business School, U.S.A. Remuneration and Corporate Director Training (1) Governance Committee, SCG Ceramics • Directors Accreditation Program (DAP) 140/2017, Public Company Limited Thai Institute of Directors Association 030 • Since 2019 Chairman of the Board of Directors • 2013 – 2017 Vice President-Domestic Market, and Chairman of the Executive SCG Cement-Building Materials Committee, Quality Construction • 2014 – 2018 Director, Asia Cement Public Products Public