Dato’ Siew was appointed as Non-Independent Executive Director of the Company on 17 October 2001. He was re-designated as the Non-Independent Non-Executive Deputy Chairman on 20 August 2004 and later as the Executive Vice Chairman of the Company on 25 January 2011.

Dato’ Siew received his secondary and tertiary education in the United Kingdom, first studying in Marlborough College, then completing his tertiary education at Imperial College, London, where he obtained his Bachelor of Science (Hons) in Chemical Engineering and Master of Science degree in Operational Research.

Dato’ Siew has extensive experience in the field of petrochemicals accumulated over more than 30 years in the local and international sectors.

Dato’ Siew was a very active member of the Young Presidents’ Organisation (“YPO”) from 1993 until 2006. He was Chairman of the Malaysian Chapter of YPO and was Co-Chairman of the first Regional Conference in Kuala Lumpur in 1998. He became a member of the International Board of YPO in 2000 and served until 2003. He was Chairman of YPO’s Global Leadership Congress in Beijing in 2003. He was also a past President of the Imperial College Alumni of Malaysia, a post he has held from 2008 to 2018 and a past Governor of the Board of Governors of Malborough College of Malaysia.

Currently, Dato’ Siew is the Executive Vice Chairman of Ancom Nylex Berhad (“ANB”), the holding company of the Company, which is listed on the Main Market of Bursa Malaysia Securities Berhad. Dato' Siew is also the Group Managing Director of Nylex (Malaysia) Berhad.

Dato’ Siew is a substantial shareholder of the Company through his direct and indirect shareholding in ANB and his direct interest in the Company.

Sabli was appointed Executive Director – Logistics of the Company in May 2023 and is responsible for overseeing the Group’s logistics operations and strategic development in this segment.

He began his career with Sabah Gas Industries Sdn. Bhd. in 1982 in the Human Resource department and Marketing department before joining PETRONAS in 1992 as a Senior Marketing Manager where he served in various capacities over a span of 17 years, including in leadership and training roles before his retirement in 2009.

In June 2009, he joined ANB as Human Resource Director. He was subsequently appointed Director of Chemical Integration in December 2011. In February 2021, he was appointed Managing Director/Chief Executive Officer of Genovasi Malaysia Sdn. Bhd. (a subsidiary of ANB then), before assuming his current role in May 2023.

Sabli holds a Master in Business Administration from Henley/ Brunel University, United Kingdom. He also holds a Postgraduate Diploma from Brighton Polytechnic and a Diploma from South Devon Technical College, United Kingdom. In addition, he completed the Senior Management Programme (PETRONAS/INSEAD) and obtained a Certificate in International Management in 1999.

Chang Meng was appointed CFO of the Company in 2011 and is responsible for overseeing the Group’s financial management, reporting, treasury and corporate finance functions.

He began his career in 1992 with Coopers & Lybrand, where he served as an auditor for eight years and last held the position of Audit Manager. He subsequently joined Setegap Berhad, a construction company as Group Accountant in 2000 and later HLG Securities Sdn. Bhd., a stockbroking company as Finance Manager in 2002 respectively, strengthening his experience in financial operations and management.

In 2005, he joined Tamco Corporate Holdings Berhad (former name of the Company) as Corporate Accounting Manager and was later promoted to Head of Corporate Finance in 2010. In 2014, he assumed an expanded role as CFO of ANB, where he continues to oversee both ANB and the Company's group-wide financial strategy and governance.

Chang Meng is a member of the Malaysian Institute of Accountants.

Mohd Yusof was appointed General Manager of Cogent, a whollyowned subsidiary of the Company, in February 2015, where he is responsible for overseeing Cogent's operations, business performance and service delivery

Prior to joining the Group, he served as Senior Manager/Director of Hayara Sdn. Bhd. and Hayana Sdn. Bhd. from 2013 to 2015, companies involved in solid waste management and construction materials respectively. Before that, he held various senior managerial positions at Soi Yong Berhad and Koperasi Usaha Bersatu (M) Berhad, where he gained extensive experience in operations management and business administration.

He retired from Cogent in July 2026 and was subsequently appointed as a Director of Ancom Nylex Terminals Sdn. Bhd. ("ANT") in August 2026, continuing to contribute his industry experience at the board level.

Mohd Yusof holds a Bachelor’s Degree in Industrial Engineering from the University of Alabama, Tuscaloosa, Alabama, USA.

Rachel was appointed the General Manager of Cogent, a whollyowned subsidiary of the Company, in July 2026.

She brings over 23 years of experience in total supply chain solutions and chemicals transportation across Malaysia and Singapore.

Prior to joining Cogent, Rachel spent 15 years with LTH Logistics (Singapore) Pte Ltd, where she was responsible for delivering total supply chain solutions and managing chemicals transportation operations.

Before that, she served for 8 years at BDP International Sdn. Bhd., gaining extensive experience in end-to-end supply chain management and freight forwarding.

Rachel holds a Bachelor Degree in Statistics from Universiti Malaya.

Kit was appointed General Manager of ANT in August 2025 and is responsible for overseeing ANT's overall operations, financial management and business performance.

He began his career in 2004 as an Audit Assistant with Peter Chong & Co., Chartered Accountants, before moving into corporate finance and managerial roles in organisations including Cal Comp (Malaysia) Sdn. Bhd. and Malay Mail Sdn. Bhd. from 2006 to 2015 where he gained extensive experience in financial management, reporting and operational oversight.

Prior in joining ANT, he joined Cogent in 2015 as Finance and Accounts Manager and was promoted to Deputy General Manager in 2017, where he oversaw both finance and operations. His crossfunctional leadership experience provided strong operational grounding prior to his appointment as General Manager of ANT.

Kit holds a Bachelor’s Degree in Finance from the University of Hertfordshire, UK.