Stephen Geoffrey Miller was appointed to the Board as a Non-Independent Non-Executive Director on 6 May 2026. He has also been a member of U Mobile's Executive Committee since 1 April 2012. Prior to joining the Board, he served as an alternate director of U Mobile from 1 January 2017 to 5 May 2026.


He currently serves as President & Group Chief Executive Officer, and a Director, of Singapore Technologies Telemedia (ST Telemedia). He also serves on the Boards of StarHub Ltd and TeleChoice International Limited.


Stephen has over 35 years of experience in the communications, media and technology sectors, particularly in the areas of investment, international operations, financial management, business development and strategic planning. He has worked at ST Telemedia for close to 20 years in various senior positions, including President & Chief Operating Officer, Chief Financial Officer and consultant to its portfolio companies. Prior to ST Telemedia, he spent over 14 years of his career in investment banking with Credit Suisse, primarily heading its telecommunications and media group throughout Asia and the Pacific.


Stephen played a crucial role in steering ST Telemedia's strategic direction into data centres and infrastructure technology businesses to capture new opportunities in the digital economy. Since assuming the role of President & Group Chief Executive Officer, he has led the continuous enhancement of ST Telemedia's business capabilities and portfolio while instilling a shared culture to drive outcomes and strengthen resilience. Stephen is also a strong advocate of corporate sustainability. Under his leadership, ST Telemedia formalised its sustainability framework to align its operations and strategies with the United Nations Sustainability Development Goals.


Stephen holds a Bachelor of Commerce, with First Class Honours in Economics and Finance, from the University of New South Wales, Australia. He is also a member of the Australian Institute of Company Directors.