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PTT PCL (PTT.BK)

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Summary

Name Age Since Current Position

Krairit Euchukanonchai

61 2018 Non-Executive Independent Chairman of the Board

Chansin Treenuchagron

58 2018 President, Chief Executive Officer, Director, Secretary to the Board

Nitima Thepvanangkul

60 2016 Acting Chief Financial Officer

Toemchai Bunnag

59 2017 President and Chief Executive Officer, Global Power Synergy Public Company Limited

Supattanapong Punmeechaow

58 2014 President and Chief Executive Officer of PTT Global Chemical Public Company Limited

Sukrit Surabotsopon

59 2013 President of IRPC Public Company Limited

Atikom Terbsiri

55 2014 President and Chief Executive Officer of Thai Oil Public Company Limited

Somporn Vongvuthipornchai

59 2015 President and Chief Executive Officer of PTT Exploration and Production Public Company Limited (PTTEP)

Auttapol Rerkpiboon

52 2017 Chief Operating Officer, Downstream Petroleum Business Group and Acting Senior Executive Vice President, Downstream Business Group Alignment

Boobpha Amornkiatkajorn

59 2014 Senior Executive Vice President - International Trading Business Unit

Peangpanor Boonklum

52 2017 Senior Executive Vice President, Office of General Counsel

Sriwan Eamrungroj

60 2015 Senior Executive Vice President of Corporate Strategy

Kris Imsang

52 2018 Senior Executive Vice President, Organization Management and Sustainability

Jiraphon Kawswat

56 2017 Senior Executive Vice President, Oil Business Unit

Noppadol Pinsupa

53 2015 Senior Executive Vice President of Gas Business Unit

Wittawat Svasti-xuto

56 2018 Senior Executive Vice President, Innovation and Digital

Athavuth Vikitsreth

58 2017 Senior Executive Vice President, Public Relations

Wirat Uanarumit

55 2016 Chief Operating Officer - Upstream Petroleum and Gas Business Group

Wantanee Jaruke

57 2013 Company Secretary

Nuttachat Charuchinda

2019 Director

Chumpol Rimsakorn

57 Director

Kulit Sombatsiri

2019 Director

Chanvit Amatamatucharti

61 2014 Independent Director

Vichai Assarasakorn

57 2014 Independent Director

Teerawat Boonyawat

2019 Independent Director

Kittipong Kittayarak

59 2014 Independent Director

Somkit Lertpaithoon

58 2017 Independent Director

Danucha Pichayanan

Independent Director

Nuntawan Sakuntanaga

59 2014 Independent Director

Supot Teachavorasinskun

52 2018 Independent Director

Thon Thamrongnawasawat

51 2016 Independent Director

Don Wasantapruek

59 2014 Independent Director

Biographies

Name Description

Krairit Euchukanonchai

Chansin Treenuchagron

Mr. Chansin Treenuchagron has been appointed President, Chief Executive Officer, Director, Secretary to the Board at PTT Public Company Limited with effect from August 31, 2018, after being its Senior Executive Vice President - Downstream Business Group Alignment. He was Acting Senior Executive Vice President - Corporate Strategy of the Company before that. He holds a Bachelor of Economics from Thammasat University and a Master of Economics from Chulalongkorn University.

Nitima Thepvanangkul

Ms. Nitima Thepvanangkul has been Acting Chief Financial Officer of PTT Public Company Limited since October 1, 2016. Appointed • October 1, 2016 Educations • Bachelor of Accounting, Chulalongkorn University • Master of Business Administration Program (Finance) (Hons.), National Institute of Development Administration (NIDA), Thailand Certifications • Director Certification Program (DCP 126/2009), Risk Management Committee Program (RMP 3/2014), Anti-Corruption: The Practical Guide (ACPG 18/2015), Ethical Leadership Program (ELP 3/2016) Thai Institute of Directors Association (IOD) • NIDA-Wharton Executive Leadership Program, the Wharton School, University of Pennsylvania, USA • PTT Executive Leadership Program, GE Crotonville, USA Work Experiences 2011 - 2014 : Executive Vice President, PTT, working on a secondment as Senior Executive Vice President - Corporate Accounting and Finance, Thai Oil Public Company Limited 2014 - 2016 : Executive Vice President, Corporate Accounting and Finance, PTT 2016 - : Executive Vice President, September 2016 Financial Policy and Corporate Accounting, PTT October 1, 2016 - : Executive Vice President Acting Present Chief Financial Officer

Toemchai Bunnag

Mr. Toemchai Bunnag is President and Chief Executive Officer, Global Power Synergy Public Company Limited of the company. Appointed • March 1, 2017 Educations • Bachelor of Science (Chemical Engineering), Chulalongkorn University • MSc. (Operations Research) Illinois Institute of Technology, Chicago Illinois, USA • Ph.D. (Management Sciences) Illinois Institute of Technology, Chicago Illinois, USA Certifications • Director Certification Program (DCP 143/2011) Risk Management Program for Corporate Leaders (RCL 3/2016), Thai Institute of Directors Association (IOD) • Public Administration and Conflict Management, King Prajadhipok’s Institute • GE: Executive Program 2005 • GE: PTT Executive Program 2008 • Safety Officer - Management Level, NPC Safety and Environmental Services • Leadership Development Program (LDP) (Batch 4), Thai Listed Companies Association, Work Experiences 2012 - October 2015 : Executive Vice President, working on a secondment as Managing Director, PTT Natural Gas Distribution Company Limited/ Managing Director, Amata Natural Gas Distribution Company Limited 2012 - November : Director, 2015 PTT Natural Gas Distribution Company Limited/ Director, Amata Natural Gas Distribution Company Limited 2015 - February : Executive Vice President, PTT, 2017 working on a secondment as President, Global Power Synergy Public Company Limited March 1, 2017 - : Senior Executive Vice President, PTT, Present working on a secondment as President and Chief Executive Officer, Global Power Synergy Public Company Limited

Supattanapong Punmeechaow

Mr. Supattanapong Punmeechaow has been President and Chief Executive Officer of PTT Global Chemical Public Company Limited of PTT Public Company Limited since October 1, 2014. He was Senior Executive Vice President - Corporate Strategy in the Company before that. He holds Bachelor's degree in Chemical Engineering from Chulalongkorn University and Master's degree in Business Administration from Chulalongkorn University.

Sukrit Surabotsopon

Mr. Sukrit Surabotsopon has been President of IRPC Public Company Limited of PTT Public Company Limited since October 1, 2013. He was previously Senior Executive Vice President - Petrochemicals & Refining Business Unit of the Company. He holds Bachelor of Engineering in Chemical Engineering from Chulalongkorn University.

Atikom Terbsiri

Mr. Atikom Terbsiri has been President and Chief Executive Officer of Thai Oil Public Company Limited of PTT Public Company Limited since October 1, 2014. He was President of IRPC Public Company Limited before that. He holds Bachelor of Business Administration from Assumption University of Thailand and Masters of Business Administration in Finance and International Business from Armstrong University.

Somporn Vongvuthipornchai

Dr. Somporn Vongvuthipornchai has been President, Chief Executive Officer of PTT Exploration and Production Public Company Limited (PTTEP) of PTT Public Company Limited. Appointed • October 22, 2015 Educations • Bachelor of Sciences (Petroleum Engineering), University of Tulsa, Oklahoma, USA • Master of Sciences (Petroleum Engineering), University of Tulsa, Oklahoma, USA • Ph. D. (Petroleum Engineering) University of Tulsa, Oklahoma, USA Certifications • Director Certification Program (DCP 224/2016), Thai Institute of Directors Association (IOD) • Advanced Management Program 2006 (Executive Education Program), Harvard Business School, USA • GE Energy Customer Executive Leadership Program (Class 2012), GE Global Learning, Crotonville, USA • Leadership Development Program III (2013), PTT Leading and Learning Institute (PLLI) • Certificate in Top Executives in the Energy Education Program (Class of 2nd), Thailand Energy Academy (TEA) • Anti-Corruption Strategic Management Course for Senior Executive (Class of 6th), Sanya Dharmasakti Anti-Corruption Institute (SDI), Office of the National Anti-Corruption Commission (NACC), Work Experiences May 1, 2006 - : Vice President, January 14, 2010 International Asset Division, PTT Exploration and Production Public Company Limited (PTTEP) January 15, 2010 - : Executive Vice President, December 31, 2014 International Asset Group, PTTEP January 1, 2015 - : Executive Vice President, October 21, 2015 Strategy and Business Development Group, PTTEP October 22, 2015 - : Senior Executive Vice President, PTT October 31, 2017 working on a secondment as President and Chief Executive Officer, PTTEP November 1, 2017 - : Senior Executive Vice President, PTT Present working on a secondment as Chief Executive Officer, PTTEP.

Auttapol Rerkpiboon

Mr. Auttapol Rerkpiboon has been Chief Operating Officer, Downstream Petroleum Business Group and Acting Senior Executive Vice President, Downstream Business Group Alignment. Appointed • October 1, 2017 Educations • Bachelor of Engineering (Civil Engineering), Chulalongkorn University, Thailand • Diploma of Petroleum Management, College of Petroleum Studies, Oxford, England (British Council Scholarship) • Master of Economics Program, National Institute of Development Administration, Thailand Certifications • Director Certification Program (DCP 173/2013), Thai Institute of Directors Association (IOD) • TLCA Executive Development Program (EDP) (Class of 1st) Thai Listed Companies Association (TLCA) • Diploma, The Joint State-Private Sector Couse Class of 58th, National Defence College • Politics and Governance in Democratic for Executives (Class of 14th), King Prajadhipok’s Institute • Top Executive Program (Class of 20th), Capital Market Academy (CMA) • NIDA-Wharton Executive Leadership Program 2009, The Wharton School of the University of Pennsylvania, USA • PTT Executive Leadership, General Electric, GE, New York, USA Work Experiences 2010 - 2011 : Executive Vice President, Corporate Communications & Social Responsibility, PTT 2011 - 2014 : Executive Vice President, Commercial & International Marketing, PTT 2014 - : Executive Vice President, September 30, 2014 Retail Marketing, PTT October 1, 2014 - : Senior Executive Vice President, September 30, 2015 Sustainability Management and Project Engineering, PTT October 1, 2015 - : Senior Executive Vice President September 30, 2017 Oil Business Unit, PTT

Boobpha Amornkiatkajorn

Ms. Boobpha Amornkiatkajorn has been Senior Executive Vice President - International Trading Business Unit of PTT Public Company Limited since October 1, 2014. Appointed • October 1, 2014 Educations • Bachelor of Science (Economics) (Hons.), Kasetsart University, Thailand • Master of Economics Program (Finance) (Hons.), National Institute of Development Administration (NIDA), Thailand Certifications • Director Certification Program (DCP 152/2011), Thai Institute of Directors Association (IOD) • Senior Executive Program (Class 2003), Sasin Graduate Institute of Business Administration of Chulalongkorn University • Army War College (Class 2008), Institute of Army Academics • Leadership Development Program- center for Creative Leadership, Singapore • Breakthrough Program for Senior Executive (BPSE) (Class 2012), IMD Institute/ Switzerland • Capital Market Academy Leader Program (CMA 21/2015), Capital Market Academy • Certificate in Top Executives in the Energy Education Program (Class 10/2017), Thailand Energy Academy (TEA) Work Experiences 2002 - 2009 : Vice President, Crude Oil Trading, PTT 2010 - 2014 : Executive Vice President, Downstream Business Group Alignment, PTT 2014 - : Executive Vice President, September 30, 2014 Trading Operations, PTT October 1, 2014 - : Senior Executive Vice President, Present International Trading Business Unit, PTT

Peangpanor Boonklum

Ms. Peangpanor Boonklum is Senior Executive Vice President, Office of General Counsel of the company. Appointed • October 1, 2017 Educations • Bachelor of Laws (Second Class Honor), Chulalongkorn University • Master of Laws (Business Law), Chulalongkorn University • Master of Laws (LL.M.), Columbia University School of Law, New York, USA Columbia University School of Law, New York, USA .Certifications • Director Certification Program (DCP 7/2001), Anti-Corruption: The Practical Guide (ACPR 38/2017), Thai Institute of Directors Association (IOD) • Executive Development Program (Class of 1st), Thai Listed Companies Association (TLCA) Work Experiences 2009 - February 29, : Partner and Associate, Weerawong, 2016 Chinnavat & Peangpanor Company Limited March 2016 - : Senior Counsel, Weerawong, June 2017 Chinnavat & Partners Company Limited (Former Company Name: “Weerawong, Chinnavat & Peangpanor Company Limited”, Changed to the current name on April 3, 2017) July 1, 2017 - : Executive Vice President, September 30, 2017 Office of Corporate Legal, PTT October 1, 2017 - : Senior Executive Vice President, Present Office of General Counsel, PTT.

Sriwan Eamrungroj

Ms. Sriwan Eamrungroj serves as Senior Executive Vice President of Corporate Strategy of PTT Public Company Limited. Appointed • October 1, 2015 Educations • Bachelor of Engineering (Mechanical Engineering) (Second-class Honors), Chulalongkorn University, Thailand • Master of Business Administration, Thammasat University, Thailand Certifications • Director Certification Program (DCP 60/2012), The Board’s Role in Mergers and Acquisitions (Class 1/2011) Thai Institute of Directors Association (IOD) • INSEAD Business School 2010, INSEAD Executive Education, France • Advance Management Program (AMP) (Class 183/2012), Harvard Business School, USA • Strategic Marketing Management, Stanford Graduate School of Business • Seminar “Briefing on International Anti-Corruption... International Cases and Practices”, IOD (October 14, 2015) • Certificate in Top Executives in the Energy Education Program (Class of 8th) (2016), Thailand Energy Academy (TEA) • Top Executive Program (Class of 25th), Capital Market Academy (CMA), Work Experiences 2009 - 2011 : Executive Vice President Corporate Strategy, PTT 2011 - : Executive Vice President, September 30, 2015 PTT working on a secondment as Executive Vice President, Corporate Commercial and Marketing, PTT Global Chemical Public Company Limited (PTTGC) October 1, 2015 - : Senior Executive Vice President Present Corporate Strategy, PTT

Kris Imsang

Mr. Kris Imsang serves as Senior Executive Vice President, Organization Management and Sustainability of the company. Appointed • January 1, 2018 Educations • Bachelor of Engineering (Civil Engineering), Chulalongkorn University, Thailand Certifications • Director Certification Program (DCP 139/2010) Thai Institute of Directors Association (IOD) • Leadership Development Program, PTT • Certificate in Top Executives in the PoomPalungPandin Program, Chulalongkorn University • Top Executives Program, Capital Market Academy (CMA #23) • Top Executives in Energy Program, Thailand Energy Academy (TEA #9) Work Experiences 2009 - 2011 : Vice President, Leadership & Talent Management 2012 - 2013 : Executive Vice President, Lubricant Business 2013 - 2015 : Executive Vice President, Petroleum Terminal Operations, PTT 2015 - January 1, : Executive Vice President, 2016 Retail Marketing, PTT February 1, 2016 - : Senior Executive Vice President December 31, 2017 Human Resources & Organization Excellence, PTT January 1, 2018 : Senior Executive Vice President, Organization Management and Sustainability

Jiraphon Kawswat

Ms. Jiraphon Kawswat is Senior Executive Vice President, Oil Business Unit of the company. Appointed • October 1, 2017 Educations • Bachelor of Science (Accounting), Kasetsart University • Master of Accountancy (Cost Accounting), Chulalongkorn University • Master of Business Administration (Financial Management), Kasetsart University Certifications • Director Certification Program, Thai Institute of Directors Association (IOD) • Senior Executive Program, London Business School, UK • Leadership Development Program III (2013), PTT Leading and Learning Institute (PLLI) • Strategic Thinking Through Case • PTT Group VP Leader ship Development Program • Executive Development Program (EDP), Thai Listed Companies Association • PTT group PLLI 3 Leadership Greatness: Great Leaders, Great Teams, Great Results Work Experiences 2006 - 2012 : Vice President, Managerial Accounting, PTT 2012 - 2016 : Executive Vice President, Planning, Oil Business Unit, PTT 2016 - : Executive Vice President, PTT, September 30, 2017 working on a secondment at PTTRM as Managing Director. October 1, 2017 - : Executive Vice President Present Acting Senior Executive Vice President, Oil Business Unit, PTT

Noppadol Pinsupa

Mr. Noppadol Pinsupa serves as Senior Executive Vice President of Gas Business Unit of PTT PCL. Appointed • October 1, 2015 Educations • Bachelor of Engineering (Electrical Engineering), Chulalongkorn University, Thailand • Master of Engineering (Electrical Engineering), Chulalongkorn University, Thailand Certifications • Director Certification Program (DCP 146/2011), Financial Statement for Director (FSD 12/2011), Thai Institute of Directors Association (IOD) • Leadership Development Program III, PTT Leadership and Learning Institute • Breakthrough Program For Senior Executives, International Leading Business School (IMD), Lausanne, Switzerland. • Financial Statement for Directors, PTT Public Company Limited (PTT) • Seminar “Briefing on International Anti-Corruption... International Cases and Practices”, IOD (October 14, 2015) • Mitsui-HBS Global Management Academy 2015, Japan - USA • G-20Y Summit 2015, France • Program for Senior Executive on Justice Administration Batch (Class of 19th), Judicial Training Institute • Top Executives Program (Class of 22/2016), Capital Market Academy • Diploma, The National Defence Course (Class 60), National Defence College Work Experiences 2010 - 2012 : Executive Vice President, Natural Gas Distribution, Gas Business Unit, PTT 2012 - 2014 : Executive Vice President, Natural Gas for Vehicle, PTT October 1, 2014 - : Executive Vice President, PTT, September 30, 2015 working on a secondment as President, Global Power Synergy Public Company Limited October 1, 2015 - : Senior Executive Vice President Present Gas Business Unit, PTT

Wittawat Svasti-xuto

Mr. Wittawat Svasti-xuto has been Senior Executive Vice President, Innovation and Digital of the company. He was Senior Executive Vice President - Sustainability Management and Project Engineering at PTT Public Company Limited since January 1, 2017. He holds Bachelor of Engineering (Chemical Engineering), Chulalongkorn University, Thailand and Master of Science (Industrial Engineering), The University of Rhode Island, USA.

Athavuth Vikitsreth

Mr. Athavuth Vikitsreth is Senior Executive Vice President, Public Relations of the company. • March 1, 2017 Educations • B.B.A., Abilene Christian University, Texas, USA Certifications • Director Certification Program (DCP 106/2008), Audit Committee Program (ACP 24/2008), Monitoring the System of Internal Control and Risk Management (MIR 5/2009), Thai Institute of Directors Association (IOD) • The Joint State-Private Sector Course (Class of 23th), National Defence College • Democratic Politics and Governance for High-Level Administrators (Class of 12th), King Prajadhipok’s Institute • Corporate Governance for Directors and Top Executives of State Enterprises and Public Organizations (Class 3) (PDI), King Prajadhipok’s Institute • The Programme for Senior Executives on Justice Administration Batch 4, National Justice Academy, Office of Judiciary, Thailand • Top Executives Program, Capital Market Academy (Class of 20th), Thailand • Certificate in Top Executives in the Energy Education Program (Class of 8th) (2016), Thailand Energy Academy (TEA). Work Experiences 2011 - 2013 : Executive Vice President, External Affair, PTT Global Chemical Public Company Limited (PTTGC) 2014 - 2016 : Senior Executive Vice President, External Affair, PTTGC 2016 - 2017 : Senior Executive Vice President, External Affair, PTTGC working on a secondment as Executive Vice President, Public Relations, PTT Public Company Limited March 1, 2017 - : Senior Executive Vice President, Present PTTGC working on a secondment as Senior Executive Vice President, Public Relations, PTT Public Company Limited

Wirat Uanarumit

Mr. Wirat Uanarumit has been Chief Operating Officer - Upstream Petroleum and Gas Business Group of PTT Public Company Limited since October 1, 2016, Appointed • October 1, 2016 Educations • Bachelor of Science in Electrical Engineering, Chulalongkorn University, Thailand • Master of Business Administration, with emphasis in Financial Management, Pennsylvania State University, Pennsylvania, USA Certifications • Director Certification Program (DCP 8/2001), Directors Certification Program Update (DCPU 5/2015), Audit Committee Program (ACP 38/2012), Thai Institute of Directors Association (IOD) • Member, Beta Gamma Sigma (US National Scholastic Honour Society in Business) • Advance Management Programme, INSEAD Business School, Fontainebleau, France • Advanced Management Program, Harvard Business School, USA • Top Executive Program (Class of 4th), Capital Market Academy (CMA) • Senior Executives on Justice Administration Batch (Class of 16th), National Justice Academy • Advanced Security Management Program (ASMP), (Class of 2nd), National Defence College • Executive Development Program (Class of 1st), Thai Listed Companies Association (TLCA) • Diploma, The Joint State-Private Sector Course, National Defence College. • Executive Management with Business Development and Investment (Class 2), Institute of Business and Industrial Development (IBID) • Democratic Politics and Governance for High-Level Administrators Program, (Class of 20th), King Prajadhipok’s Institute Work Experiences 2005 - January 2011 : Executive Vice Present - Finance, Thai Oil Public Company Limited February 2011 - : Senior Executive Vice President - October 2011 Corporate Accounting and Finance, IRPC Public Company Limited October 2011 - : Executive Vice President, April 30, 2014 Corporate Finance, PTT May 1, 2014 - : Chief Financial Officer, PTT September 30, 2016 October 1, 2016 - : Chief Operating Officer, Present Upstream Petroleum and Gas Business Group, PTT

Wantanee Jaruke

Ms. Wantanee Jaruke has been Company Secretary of PTT Public Company Limited since December 1, 2013. She holds a Bachelor of Arts from Chiang Mai University and a Master of Business Administration from Kasetsart University.

Nuttachat Charuchinda

Mr. Nuttachat Charuchinda is Director of PTT Public Company Limited. He was Chief Operations Officer - Downstream Petroleum Business Group in the Company since 2011. He holds Bachelor of Engineering in Civil Engineering from Chiang Mai University and Masters of Business Administration from Thammasat University. He has worked with Bangchak Petroleum Public Company Limited and Thaioil Public Company Limited.

Chumpol Rimsakorn

Kulit Sombatsiri

Chanvit Amatamatucharti

Mr. Chanvit Amatamatucharti has been Independent Director of PTT Public Company Limited since September 4, 2014. He was also a member of Remuneration and is Member of Nominating Committee as well as Chairman of the Enterprise Risk Management Committee in the Company. He holds a Bachelor of Economics from Chiang Mai University, Master of Arts (Economics), Chiang Mai University, Thailand and a Master's degree from National Institute of Development Administration.

Vichai Assarasakorn

Mr. Vichai Assarasakorn has been Independent Director of PTT Public Company Limited since September 4, 2014. Appointed • September 4, 2014; April 28, 2017 (re-elected) Educations • Bachelor of Engineering, New South Wales University, Australia Certifications • Director Certification Program (DCP 215/2016), Thai Institute of Directors Association (IOD) • Top Executive Program (Class of 12th), Capital Market Academy (CMA) • Diploma, The Joint State-Private Sector Course (Class of 22nd), National Defence College • Thailand’s 5th National Conference on Collective Action Against Corruption (Tackling Corruption through Public-Private Collaboration) (October 16, 2014) • Seminar “Role and Function of Board of Directors of State Enterprise”, State Enterprise Policy Office (June 5, 2015) • Seminar “Re-energizing Growth through Better Governance”, IOD (June 18, 2015) • Seminar “Incorporation of State Investment Corporation” (July 13, 2015) • Certificate in Top Executives in the Energy Education Program (Class of 7th) (2015), Thailand Energy Academy (TEA) • Seminar PTT Group AC Forum 2015 • Briefing on International Anti-Corruption... International Cases and Practices, IOD (October 14, 2015) • CG Forum 4/2015 - Thailand CG Forum “Governance as a Driving Force for Business Sustainability”, SET SEC and IOD (October 28, 2015) • Seminar Anti-Corruption: Leadership Role of the Board in Driven the Organization toward the Draft of the Development of Corporate Governance and Enterprise Management Act…and Good Corporate Governance (October 17, 2016) • PTT Board Briefing • Seminar “Electric Vehicles & Future Energy System: Recent Development and Implications” Petroleum Institute of Thailand (PTIT). Work Experiences 1995 - Present : Director, ShiangHeng International Company Limited 2001 - October 2014 : Secretary-General, Anti-Corruption Organization of Thailand October 2014 - : Vice President, Present Anti-Corruption Organization of Thailand March 2013 - : Vice Chairman, Present The Thai Chamber of Commerce.

Teerawat Boonyawat

Kittipong Kittayarak

Dr. Kittipong Kittayarak has been Independent Director of PTT Public Company Limited since July 1, 2014. He has Bachelor of Laws (Honor), Chulalongkorn University, Thailand Master of Laws (LL.M.), Cornell University, USA Royal Thai Government Scholarship) Master of Laws (LL.M.), Harvard University, USA Fulbright Scholarship) Doctor of the Science of Laws (J.S.D.), Stanford University, USA (Fulbright Scholarship) Director Accreditation Program (DAP 112/2014), Advance Audit Committee Program (AACP 18/2015), Thai Institute of Directors Association (IOD) Barrister-at-Law, Institute of Legal Education Thai Bar Association Politics and Government in Democracy for Executives Class of 5th), King Prajadhipok’s Institute Diploma, The National Defence Course (Class of 49th), National Defence College Diploma, (Class of 8th), Capital Market Academy (CMA) Certificate in Top Executives in the Energy Education Program (Class of 1st), Thailand Energy Academy (TEA) Seminar “Role and Function of Board of Directors of State Enterprise”, State Enterprise Policy Office (June 5, 2015) Thailand’s 5th National Conference on Collective Action against Corruption (Tackling Corruption through Public-Private Collaboration) (October 16, 2014) Seminar Strengthen Good Governance of Directors of Public Enterprises, State Enterprise Policy Office September 30, 2016) Seminar PTT Group AC Forum 2015 PTT Board Briefing

Somkit Lertpaithoon

Mr. Somkit Lertpaithoon is Independent Director of the company. Appointed • February 27, 2017 Educations • Bachelor of Law, Thammasat University • D.E.A. de Droit Public Interne (ParisII), France • Doctorat de l’Université de Droit d’Economie et de Sciences Sociales de Paris II, France Certifications • Barrister-at-Law, Institute of Legal Education Thai Bar Association • Certification in Local Government, Institut international d’administration publique (IIAP), France • Certificate in Top Executives in the Energy Education Program (Class 10/2017), Thailand Energy Academy (TEA) Work Experiences 1997 : Member of the Constituent Assembly 2007 : Secretary of the Constitution Drafting Commission 2010 - 2017 : Rector, Thammasat University 2017 : Director, the Government Pharmaceutical Organization (GPO) Present : Professor, Faculty of Law, Thammasat University

Danucha Pichayanan

Nuntawan Sakuntanaga

Ms. Nuntawan Sakuntanaga has been Independent Director of PTT Public Company Limited since July 1, 2014. Appointed • July 1, 2014; April 9, 2015 (re-elected) Educations • Bachelor of Accounting in Finance and Banking, Chulalongkorn University, Thailand • Master of Business Administration in Marketing and International Business, University of Wisconsin at Madison (Wisconsin, USA) Certifications • Director Certification Program (DCP 166/2012), Audit Committee Program (ACP 43/2013), Financial Statements for Directors (FSD 31/2016) Thai Institute of Directors Association (IOD) • Management Development Program, Mt. Eliza, Melbourne, Australia (1989) • Certificate, The Civil Service Executive Program for Senior Civil Servants (Class 38/2003), Office of the Civil Service Commission • Diploma, The National Defence Course (Class of 49th) (2006 - 2007), National Defence College. Leaders in Development Program-Managing Political & Economic Reform, Kennedy School of Government, Harvard University, Boston, USA, 2008 • Top Executive Program in Commerce and Trade (TEPCoT) (Class of 2nd), Commerce Academy • Top Executive Program (Class 14/2012), Capital Market Academy (CMA) • Corporate Governance Program for Directors and Executives of State Enterprises and Public Organization (Class 12/2013), Public Director Institute (PDI) • Certificate in Top Executives in the Energy Education Program (Class 5/2014), Thailand Energy Academy (TEA) • Seminar PTT Group AC Forum 2015 • Briefing on International Anti-Corruption... International Cases and Practices, IOD (October 14, 2015) • Seminar “Global Financial Market Outlook 2016”, IOD (November 17, 2015) • PTT Board Briefing • Seminar “Electric Vehicles & Future Energy System: Recent Development and Implications” Petroleum Institute of Thailand (PTIT)

Supot Teachavorasinskun

Mr. Supot Teachavorasinskun is Independent Director of the company. Appointed • January 18, 2018 Educations • Bachelor of Engineering (Civil Engineering), Chulalongkorn University • Master of Engineering (Civil Engineering), University of Tokyo • Doctor of Engineering (Civil Engineering), University of Tokyo Certifications • Certificate in Top Executives in the Energy Education Program (Class of 10th), Thailand Energy Academy (TEA) Work Experiences 2003 : Associate Professor, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University 2016 - Present : Dean, Faculty of Engineering, Chulalongkorn University 2017 - Present : Board Member, Thailand Institute of Scientific and Technological Research

Thon Thamrongnawasawat

Dr. Thon Thamrongnawasawat has been Independent Director at PTT Public Company Limited since November 18, 2016. Appointed • November 18, 2016 Educations • Bachelor of Science, Marine Science, Chulalongkorn University • Master of Science, Marine Science, Chulalongkorn University • Ph.D., Marine Biology and Ecology, Jamescook University, Australia Certifications • Anti-Corruption: the Practical Guide (ACPG), Direct Accreditation Program (DAP), Thai Institute of Directors Association (IOD) (in training) • Certificate in Top Executives in the Energy Education Program (Class of 9th), Thailand Energy Academy (TEA) • Seminar “Electric Vehicles & Future Energy System: Recent Development and Implications” Petroleum Institute of Thailand (PTIT) Work Experiences October 6, 2012 - : Member of the National Reform Council September 6, 2013 October 2012 - : Member of the Committee on September 2013 Environment and Natural Resources October 2012 - : Member of Energy Reform September 2013 and Internal Affair of the National Reform Council July 5, 2016 - : Honorary Board Member, Present Marine and Coastal Resources Policy Present : Deputy Dean of the Fisheries Faculty, Kasetsart University Relevant Important Positions in Listed Company – The Stock Exchange of Thailand • Independent Director/ Member of the Nominating Committee/ Member of Corporate Governance Committee, PTT Public Company Limited. Relevant Important Positions in Non-listed Company/ Other Organizations • Reform Commission of Thailand on Natural Resources and Environment Management • National Strategic Plan Committee

Don Wasantapruek

Mr. Don Wasantapruek has been Independent Director of PTT Public Company Limited since July 26, 2014. Appointed • July 26, 2014; April 11, 2016 (re-elected) Educations • Bachelor of Industrial Engineering, University of New South Wales, Sydney, Australia • Master of Industrial Engineering, University of New South Wales, Sydney, Australia Certifications • Bachelor of Industrial Engineering, University of New South Wales, Sydney, Australia • Master of Industrial Engineering, University of New South Wales, Sydney, Australia Certifications • Director Accreditation Program (DAP 117/2015), Role of the Nomination & Governance Committee Program (RNG 7/2015), Thai Institute of Directors Association (IOD) • Thailand’s 5th National Conference on Collective Action Against Corruption (Tackling Corruption through Public-Private Collaboration) (October 16, 2014) • Certificate in Top Executives in the Energy Education Program (Class 6/2015), Thailand Energy Academy (TEA) • Seminar “Incorporation of State Investment Corporation” (July 13, 2015) • Briefing on International Anti-Corruption... International Cases and Practices, IOD (October 14, 2015) • Seminar Anti-Corruption: Leadership Role of the Board in Driven the Organization toward the Draft of the Development of Corporate Governance and Enterprise Management Act… and Good Corporate Governance (October 17, 2016) • PTT Board Briefing