Vinythai Public Company Limited Attachment 1 -Information of Directors, Management, Empowered Persons and Company Secretary- 1 Vinythai Public Company Limited 1. Resume of Directors as of 31 December 2020 Proportion of Family’s Work Experience in the past 5 years Shareholding Relationship Age (%) between Name-Surname / Position Educational Qualification C = Common Managemen (Year) Shares Period Position Company t D = Debentures Mr. Kazuaki Koga / 61 - Bachelor of Laws, The University - - Positions in Listed Company on SET (1) Chairman of the Board of Directors, of Tokyo, Japan 27 Apr 2017 – Present • Chairman of the Board of Directors, and • Vinythai Public Company Limited Chairman of Nomination & Chairman of Nomination & Remuneration Remuneration Committee, and Committee authorized to sign to bind the Positions in Non-Listed Company on SET (2) Company 17 Mar 2015 – Present • Commissioner • PT Asahimas Chemical, Indonesia 1 Jan 2015 – Present • Executive Officer, GM of Essential Chemicals • AGC Inc., Japan General Div. Chemicals Company Mr. Wiboon Chuchepchunkamon / 58 - Master of Management, Sasin - - Positions in Listed Company on SET (2) Graduate Institute of Business 22 Nov 2019 – Present • • Vinythai Public Company Limited Vice Chairman of the Board of Administration of Chulalongkorn Vice Chairman of the Board of Directors, Directors, Member of Nomination & University Member of Nomination & Remuneration Remuneration Committee and - Master of Science, Petroleum and Committee Petrochemical, Petroleum and authorized to sign to bind the Petrochemical College, 1 Oct 2020 – Present • Senior Executive Vice President – Downstream • PTT Global Chemical Public Company Limited Company Chulalongkorn University Petrochemical Business - Bachelor of Engineering, 1 Oct 2019 – 30 Sep 2020 • Acting Senior Executive Vice President – • PTT Global Chemical Public Company Limited Electrical Engineering, Chulalongkorn University Downstream Petrochemical Business 1 Jan 2018 – 30 Sep 2019 • Senior Vice President – Polymers Business Unit • PTT Global Chemical Public Company Limited Certificate: 1 Jul 2017 – 31 Dec 2017 • Senior Vice President – Downstream • PTT Global Chemical Public Company Limited - Role of Chairman, Thai Institute Petrochemical Business of Directors Association (IOD) 1 Jan 2016 – 30 Jun 2017 • Senior Vice President – EO-Based • PTT Global Chemical Public Company Limited - The Executive Program in Energy Literacy for a Sustainable Future, Performance Business Unit TEA, Class 13, 2019 Thailand 1 Oct 2015 – 31 Dec 2015 • Vice President – EO-Based Performance • PTT Global Chemical Public Company Limited Energy Academy Business Unit - Director Certification Program 2 Vinythai Public Company Limited Proportion of Family’s Work Experience in the past 5 years Shareholding Relationship Age (%) between Name-Surname / Position Educational Qualification C = Common Managemen (Year) Shares Period Position Company t D = Debentures (DCP) Class 219/ 2016, Thai 15 Feb 2013 – 30 Sep 2015 • Vice President, Production – Olefins II • PTT Global Chemical Public Company Limited Institute of Directors Association 1 Jan 2013 – 14 Feb 2013 • Vice President, Production – LLDPE 1 • PTT Global Chemical Public Company Limited (IOD) - Stanford – NUS Executive Positions in Non-Listed Company on SET (14) Program in International 26 Mar 2019 – Present • Chairman • Revolve Group Limited Management, the Republic of Singapore 15 Nov 2019 – Present • Chairman • GC Oxirane Company Limited - Harvard – Leadership 1 Oct 2019 – Present • Chairman • GC Glycol Company Limited Development, Shanghai, the 14 Nov 2019 – Present • Director • GC-M PTA Company Limited People’s Republic of China 14 Nov 2019 – Present • Director • Thai PET Resin Company Limited 9 Oct 2019 – Present • Director • Solution Creation Company Limited 1 Oct 2019 – Present • Director • PTT Phenol Company Limited 17 Oct 2018 – Present • Director • HMC Polymers Company Limited 19 Jun 2018 – Present • Director • Kuraray GC Advance Materials Company Limited 9 Jan 2018 – Present • Director • GC Marketing Solutions Company Limited 7 May 2019 – 10 Nov 2019 • Chairman • GC Styrenics Company Limited 1 Jan 2018 – 31 Oct 2019 • Chairman • GC Logistics Solutions Company Limited 1 Jan 2018 – 31 Oct 2019 • Chairman • PL Global Transport Company Limited 22 Jan 2016 – 15 Jul 2017 • Director / Managing Director • TOC Glycol Company Limited Mrs. Warawan Tippawanich / 57 - Master of Business Administration, - - Positions in Listed Company on SET (2) Director and Chairperson of the Chulalongkorn University 23 Nov 2020 – Present • Director and Chairperson of the Business • Vinythai Public Company Limited Business Advisory Committee and - Bachelor of Science (Chemical Advisory Committee* authorized to sign to bind the Engineering), Chulalongkorn 1 Oct 2019 – Present • Executive Vice President – Corporate Strategy • PTT Global Chemical Public Company Limited Company University 1 Jan 2015 – 30 Sep 2019 • Senior Vice President – Corporate Affairs and • PTT Global Chemical Public Company Limited Corporate Secretary Certificate: 3 Vinythai Public Company Limited Proportion of Family’s Work Experience in the past 5 years Shareholding Relationship Age (%) between Name-Surname / Position Educational Qualification C = Common Managemen (Year) Shares Period Position Company t D = Debentures - Board Matters and Trends (BMT), Positions in Non-Listed Company on SET (12) * appointed as Director and - Class 2/2017 15 Sep 2020 – Present • Director • PTTGC International Private Limited, Singapore - Company Secretary Program Chairperson of the Business 1 Sep 2020 – Present • Director • GC International Corporation (CSP), Class 57/2014 Advisory Committee, with effect on 16 Nov 2019 – Present • Director • PTTGC America Corporation - Board Reporting Program (BRP), November 23, 2020 16 Nov 2019 – Present • Director • PTTGC America LLC - Class 15/2014 11 Nov 2019 – Present • Director • GC Polyols Company Limited - Company Reporting Program 1 Nov 2019 – Present • Director • GC Ventures Company Limited (CRP), Class 10/2014 1 Nov 2019 – Present • Director • GC Ventures America Corporation - Director Certification Program 9 Apr 2018 – Present • Director • Solution Creation Company Limited (DCP), Class 190/2014, Thai 24 Dec 2019 – 9 Nov 2020 • Director • GC-M PTA Company Limited Institute of Directors Association 24 Dec 2019 – 9 Nov 2020 • Director • Thai PET Resin Company Limited (IOD) Jan 2015 – 11 Nov 2019 • Director • GC Glycol Company Limited - Leadership Development Program Sep 2017 – 14 Sep 2019 • Director • Sarn Palung Social Enterprise Company Limited (LDP) 2 and (LDP) 3, PTT 26 Jan 2015 – 1 Mar 2017 • Director • PTTGC International Private Limited, Singapore Leadership and Learning Institute Associate Professor Danuja 67 - Doctor of Philosophy (Business - - Positions in Listed Company on SET (1) Kunpanitchakit, Ph.D. / Administration), University of 29 Aug 2019 – Present • Member of Nomination and Remuneration • Vinythai Public Company Limited Independent Director, Chairperson of Wisconsin-Madison, USA Committee Audit Committee, and Member of - Master of Business Administration 28 Nov 2017 – Present • Independent Director and Chairperson of Audit • Vinythai Public Company Limited Nomination and Remuneration (Accounting), University of Committee Committee Wisconsin-Madison, USA 25 May 2012 – 27 Nov 2017 • Independent Director and Member of Audit • Vinythai Public Company Limited - Bachelor of Accountancy (First Committee Class Honors, Gold Medal), Chulalongkorn University Positions in Non-Listed Company on SET (6) 4 Vinythai Public Company Limited Proportion of Family’s Work Experience in the past 5 years Shareholding Relationship Age (%) between Name-Surname / Position Educational Qualification C = Common Managemen (Year) Shares Period Position Company t D = Debentures Certificate: 29 Jun 2020 – Present • Honorable Committee Member of the University • Chulalongkorn University - Certificate in Director Council Accreditation Program (DAP) 26 Apr 2019 – Present • Independent Director and Chairperson of Audit • Capital Nomura Securities Public Company Class 98/2012, Thai Institute of Committee Limited Directors Association (IOD) 8 Mar 2018 – Present • Member of Good Governance and Social • Thai Public Broadcasting Service (ThaiPBS) - Certificate in Audit Committee Responsibility Committee Program (ACP) Class 44/2013, 24 Jul 2018 – Present • Member of Financial Management Committee • Thai Public Broadcasting Service (ThaiPBS) Thai Institute of Directors 27 Jul 2017 – Present • Honorable Committee Member in Accounting • Federation of Accounting Professions Association (IOD) 4 Jan 2017 – Present • Member of Audit Subcommittee • Deposit Protection Agency - Risk Management for Corporate 27 Feb 2014 – 26 Feb 2020 • Member of Audit Committee • Bank of Thailand Leaders (RCL) 16/2019, Thai 1 Apr 2008 – 17 May 2016 • Vice President (Finance and Accounting) • Chulalongkorn University Institute of Directors Association (IOD) - IT Governance and Cyber Resilience Program 15/2020, Thai Institute of Directors (IOD) Mr. Pipop Pruecksamars / 73 - Bachelor of Industrial Engineering, - - Positions in Listed Company on SET (2) Independent Director and Member of Chulalongkorn University 29 Aug 2019 – Present • Independent Director and Member of Audit • Vinythai Public Company Limited Audit Committee Certificate: Committee - Graduate Diploma, Environmental 28 Nov 2017 – 28 Aug 2019 • Independent Director, Member of Audit • Vinythai Public Company Limited Technology