Chua Sock Koong
Group Chief Executive Officer
Chief Executive Officer, Group Enterprise / Country Chief Officer, Singapore
Group Chief Technology Officer
Chief Executive Officer, International
Chief Executive Officer, Consumer Australia and Chief Executive Officer, Optus
Lim Cheng Cheng
Group Chief Financial Officer
Group Chief Corporate Officer
Chief Executive Officer, Group Digital Life
Group Chief Human Resources Officer
Yuen Kuan Moon
Chief Executive Officer, Consumer Singapore / Group Chief Digital Officer
Group Chief Information Officer
Chua Sock Koong
Ms Chua Sock Koong, 61, was appointed Group CEO on 1 April 2007. She has overall responsibility for the Group’s businesses.
Sock Koong joined Singtel in June 1989 as Treasurer before becoming CFO in April 1999. She held the positions of Group CFO and CEO, International from February 2006 to 12 October 2006, when she was appointed Deputy Group CEO.
Sock Koong sits on the boards of Bharti Airtel Limited, Bharti Telecom Limited, the Defence Science and Technology Agency, Cap Vista Pte Ltd and key subsidiaries of the Singtel Group. She is also Deputy Chair of the GSMA Board.
She is a member of the Singapore Management University Board of Trustees, the Public Service Commission, the Research, Innovation and Enterprise Council and the Indonesia-Singapore Business Council. She is also an alternate member of Singapore's Council of Presidential Advisers.
Sock Koong holds a Bachelor of Accountancy (First Class Honours) from the University of Singapore. She is a Fellow Member of the Institute of Singapore Chartered Accountants and a CFA charterholder.
Mr Bill Chang, 51, was appointed Chief Executive Officer, Group Enterprise on 16 July 2012. He leads the team that provides infocomm and technology (ICT) solutions to enterprise customers. He also assumed the role of Country Chief Officer Singapore on 1 October 2014, and is the principal liaison with local and regulatory bodies.
Bill joined Singtel on 15 November 2005 as Executive Vice President of Corporate Business and later assumed the role of Managing Director, Business Group.
Bill is the Chairman of the Singapore Polytechnic Board of Governors. He also co-chaired the Future Jobs and Skills sub-committee of the Committee on the Future Economy of Singapore. For his contributions to the education sector, he was awarded the Public Service Star in conjunction with the National Day Honours in 2017. He was conferred the Singapore Computer Society's IT Leader of the Year award in 2017 and the honorary Fellow of the society in 2014 for his contributions to Singapore's IT industry. In 2018, he was appointed a member of the Australian Institute of Company Directors' International Advisory Technology Goverance and Innovations Panel and to the Board of the Urban Redevelopment Authority of Singapore.
Bill graduated with a Bachelor of Engineering (Honours) in Electrical and Computer Systems Engineering from Monash University, Australia.
Mr Mark Chong, 54, was appointed Group Chief Technology Officer on 1 April 2017. He leads the Group’s technology strategy and innovations in the transformation of its networks and businesses across Singapore and Australia. Prior to his appointment, Mark was CEO, International from January 2013 to March 2017.
Mark joined Singtel in 1997 and has held various executive positions in the company including the roles of EVP (Networks) in Singapore and Chief Operating Officer of Advanced Info Service Public Company Limited (AIS), Singtel’s associate in Thailand.
Mark has represented Singtel on the Boards of public listed companies such as Globe Telecom, Bharti Infratel, CS Loxinfo PCL and other non-listed companies such as OpenNet. He is currently the Chairman of Bridge Mobile Alliance and an Authority member of the Civil Aviation Authority of Singapore.
He graduated with a Bachelor of Electronics Engineering and Master in Research in Electronic Systems from ENSERG, Grenoble, France, on a Singapore Government scholarship. Chong obtained his MBA from the National University of Singapore. He is a senior fellow with the Singapore Computer Society.
Mr Arthur Lang, 46, joined Singtel on 9 January 2017, as Chief Executive Officer, International (Designate) and became Chief Executive Officer, International on 1 April 2017. His main responsibilities are to oversee the growth of the Group’s regional associates across India, Indonesia, the Philippines and Thailand, strengthen its relationship with overseas partners, and drive regional initiatives, such as the regional payments platform and gaming business, for scale and synergies.
Prior to joining Singtel, Arthur was Group Chief Financial Officer of CapitaLand Limited, where he directly oversaw the functions of treasury, financial reporting and controls, risk management, strategic projects, tax, investor relations and private equity fund management. As Group CFO of CapitaLand, Arthur received the Best CFO of the Year Award for listed companies with market capitalisation of S$1 billion and above at the Singapore Corporate Awards 2015.
Prior to CapitaLand, Arthur was at Morgan Stanley where he was co-head of the Southeast Asia investment banking division and prior to that, Chief Operating Officer of the Asia Pacific investment banking division.
Arthur is a board member of Globe Telecom, Bharti Infratel Limited, NetLink Trust, the Land Transport Authority of Singapore, the National Kidney Foundation and the Straits Times Pocket Money Fund.
Arthur holds an MBA from Harvard Business School and a Bachelor of Arts in Economics (magna cum laude) from Harvard University.
Mr Allen Lew, 62, was appointed Chief Executive Officer, Consumer Australia and Chief Executive Officer, Optus on 1 October 2014.
Prior to that, Allen was CEO, Group Digital Life and also Country Chief Officer Singapore.
Allen began his career with Singtel on 7 November 1980 and has served in various senior management roles both in Singapore and overseas. His first overseas posting was to Advanced Info Service Public Company Limited (AIS), Singtel’s regional associate. He was the Chief Operating Officer of AIS for three years before his posting to Optus in late 2001, as Managing Director of Optus Mobile and later as Managing Director of Optus Consumer Business. He returned to Singapore as CEO Singapore in 2006.
Allen is the Chairman of the AIS Executive Committee.
He holds a Bachelor of Electrical Engineering from the University of Western Australia under a Colombo Plan Scholarship and a Master of Science (Management) from the Massachusetts Institute of Technology, US.
Lim Cheng Cheng
Ms Lim Cheng Cheng, 46, is Group Chief Financial Officer. She assumed this role on 10 April 2015 and is responsible for the Singtel Group’s finance-related functions including tax, treasury and investor relations.
Cheng Cheng has over 23 years of experience in finance and mergers and acquisitions. She joined Singtel in 2012 as Vice President, Group Strategic Investment and was appointed Deputy GCFO on 1 October 2014. Prior to that, she was Managing Director, Group Strategic Investments.
Before joining Singtel, Cheng Cheng was Executive Vice President and CFO at SMRT Corporation. She also worked at Singapore Power for 10 years in various corporate planning, investments and finance roles, the last of which was Head and Vice President (Financial Planning and Analysis). She started her career with PricewaterhouseCoopers.
Cheng Cheng was appointed as a non-executive, non-independent director at SingPost on 1 April 2017.
Cheng Cheng holds an MBA from the University of Chicago Booth School of Business and a Bachelor of Accountancy from Nanyang Technological University. She is a Chartered Accountant (Singapore) of the Institute of Singapore Chartered Accountants.
Ms Jeann Low, 58, was appointed Group Chief Corporate Officer on 10 April 2015. She is responsible for the Group’s corporate functions including strategy, mergers and acquisitions, corporate communications, legal, regulatory and procurement.
Prior to this role, she was Group Chief Financial Officer for seven years.
Jeann joined Singtel on 12 October 1998 as Group Financial Controller and has held several management roles including Executive Vice President of Strategic Investments and CFO of Optus.
Jeann is a board member of the Governing Board of the Lee Kong Chian School of Medicine. She is also a Director of Advanced Info Service Public Company Limited (AIS) and Intouch Holdings Public Company Limited.
Jeann holds an Honours Degree in Accountancy from the National University of Singapore and is a Fellow Member of the Institute of Singapore Chartered Accountants.
Mr Samba Natarajan, 52, is Chief Executive Officer, Group Digital Life. He joined Singtel in May 2014 as Managing Director of Digital Enterprise, leading a team focused on identifying and executing on growth opportunities from emerging technology trends.
Samba has more than 25 years of corporate and consulting experience across a wide range of senior roles in the areas of strategy, business development and finance. He worked for Citibank from 1988 to 1997 and McKinsey & Company from 1999 to 2014. In his last role at McKinsey, he was the Leader of Southeast Asia Technology, Media & Telecommunications practice.
Samba serves on the Board of Directors of Globe Telecom in the Philippines. He is also a member of the Board of the Singapore American School.
Samba holds a Bachelor of Engineering degree in Electrical Engineering with distinction from the Birla Institute of Technology and Science in Pilani, India; a Post Graduate Diploma in Management from the Indian Institute of Management in Ahmedabad, India, and an MBA from the Wharton School, University of Pennsylvania, USA where he was a Ford Fellow and a Palmer Scholar.
Ms Aileen Tan, 51, Group Chief Human Resources Officer, is responsible for the development of human resources across the Singtel Group. She also leads its corporate sustainability function.
Aileen joined Singtel on 2 June 2008 as Group Director, Human Resources. Prior to that, she was Group General Manager, Human Resources at WBL Corporation Limited and Vice President, Centres of Excellence with Abacus International Pte Ltd.
She co-chairs the Ministry of Manpower’s (MOM) HR Industry Transformation Advisory Panel and is a member of MOM’s Workplace Safety & Health 2028 Tripartite Strategy Committee. She is also a member of the Institute for Human Resource Professionals (IHRP) Board, Singapore University of Social Sciences Board of Trustees and the Home Nursing Foundation Board.
Aileen graduated with a Bachelor of Arts from the National University of Singapore. She also holds a Master of Science in Organisational Behaviour from the California School of Professional Psychology, Alliant International University, US. She is a pioneer IHRP Master Professional (IHRP-MP), conferred by the IHRP in recognition of her significant contributions to the HR community and for being a role model for the HR profession.
Yuen Kuan Moon
Mr Yuen Kuan Moon, 51, was appointed Chief Executive Officer, Consumer Singapore on 1 June 2012. He is responsible for leading the Singapore consumer business to deliver a complete and integrated suite of services, including mobile, broadband and TV solutions to consumers. As we deepen our digitalisation efforts, Moon has also been appointed as our Group Chief Digital Officer. In this newly-created role, Moon will drive the Group’s overall digitalisation strategy, while continuing to lead the Singapore consumer business in innovating our products and services to extend our market leadership.
Moon began his career with Singtel on 1 February 1993 and has over 20 years of experience in the consumer business, including Marketing, Business Development, Retail and Channel Sales. He has held several leadership roles, including Vice President of Regional Operations and Executive Vice President of Digital Consumer.
Earlier in his career, Moon was posted to PT Telekomunikasi Selular (Telkomsel), Singtel’s regional associate, as General Manager for Product Development in 2003 and was appointed Director of Commerce from 2005 to 2007. He has served on the Board of Commissioners in Telkomsel since 2009.
Moon was appointed to the Board of SkillsFuture Singapore on 3 October, 2016 as well as the Board of Advisors (BoA) of the Institute of Service Excellence at SMU (ISE) on 23 January 2018. He was appointed as a member of the Digital Readiness Council Steering Committee with effect from 22 November 2018.
Moon graduated with a First Class Honours degree in Engineering from the University of Western Australia. He also holds a Master of Science in Management from Stanford University, US.
Mr William Woo, 54, was appointed Group Chief Information Officer with effect from 1 August 2017. William was the Managing Director of Enterprise Data and Managed Services (EDMS) and Managing Director of Cyber Security at Group Enterprise.
He joined Singtel in May 2011 from Xchanging PLC, where he was Managing Director for the South East Asia region.
Prior to that, William spent 20 years at EDS and had held various senior management roles which included Managing Director of South East Asia & India and Vice President, Global Service Delivery of Asia, responsible for leading the Information Technology Outsourcing, Business Process Outsourcing and Applications service delivery across the Asia region. He started his career with the National Computer Board (NCB).
William graduated with a Bachelor of Applied Science in Computing (Distinction) from the Queensland University of Technology, Australia, and holds an Executive MBA from the National University of Singapore.