Tan Chong Huat is the Chairman and one of the founding members of RHTLaw Asia LLP, a leading legal practice with a strong Asia Pacific presence. He is also the Chairman of the RHT Group of Companies, which is involved in sectors such as financial services, digital assets and blockchain technology. Chong Huat is additionally the Chairman of the Asia Academy of Digital Economy and a board advisor to the Digital Assets Association.

Chong Huat has extensive experience in corporate, banking and project finance law in Singapore and the region, and has acted on numerous significant corporate transactions, including IPOs, RTOs, MBOs, restructurings, M&As, and the financing of major real estate and infrastructure projects across Asia. He has been consistently recognised as a leading practitioner in reputable publications such as IFLR1000 and Legal 500 Asia Pacific.

Over the years, he has successfully invested in start-ups, SMEs and listed companies. He is also knowledgeable and passionate about blockchain, distributed ledger technologies and digital assets, and has invested in two digital exchanges that apply DLT frameworks. He founded SDAX Financial Pte. Ltd., where he previously served as Chairman, and now serves as Non-Executive Chairman of the SDAX Exchange Board. In this role, he provides strategic oversight and guides the Board in enhancing sector leadership, governance and compliance, and financial performance and stewardship, with the vision of transforming the Exchange into a globally recognised market operator.

He is an avid golfer and currently serves as the President of the Singapore Golf Association and Chairman of the ASEAN Golf Federation.

Chong Huat is passionate about the “Drug Free Singapore” cause and contributes actively to it as Chairman of the National Council Against Drug Abuse. 

Sunil brings more than 30 years of global financial services experience across the three lines of defence, with a career spanning Singapore, Hong Kong, London, Australia, and India. He has held senior roles at Barclays, Deutsche Bank, Morgan Stanley, and ANZ, leading global teams and strengthening risk and control frameworks across investment banking, corporate banking, private banking, asset management, and alternative investments.

He possesses strong front-to-back product lifecycle knowledge, including in digital assets, and has driven new product development, due diligence, and cross-border integration efforts across Asia-Pacific and Europe. His leadership spans both risk and commercial functions – fostering strategic growth, driving efficiency and compliance outcomes, and enhancing performance in sales-driven and branch-led businesses.

Sunil has worked closely with diverse organizational teams, contributing significantly to the development of global product approval frameworks, including those for digital assets, and supporting regulatory and governance transformations across multiple jurisdictions. With extensive audit experience reporting to boards and regulators, he has also served as a Designated Material Risk Taker and Material Risk Person under stringent regulatory accountability regimes.

He holds a Master of Arts (Honours) in Economics from St John’s College, University of Cambridge.

BG (Ret’d) Chua Chwee Koh is the former Chief Operating Officer (COO) of Certis CISCO Pte Ltd. He joined Certis CISCO in 2004 as the COO and was a member of the Executive Leadership Team that grew the group revenue from S$200 million to more than S$1.7 billion in FY2021. As COO, he was accountable for revenue, profit and customer satisfaction for the manpower security business in Singapore (revenue of approximately S$800 million in FY2018). He served as the Chief, Group Technology and Operations from May 2018 to July 2021 and led the digital transformation effort during that period. He has since developed significant expertise in digital transformation, cybersecurity, AI and blockchain technology. He also served as a Non-Independent & Non-Executive Director at Addvalue Technologies (AVT) Pte Ltd (listed on SGX) from January 2022 to October 2025. As the Board Exco Chairman of AVT, he worked closely with the Management team and successfully guided the company back to a path of sustainable profitability. Prior to joining Certis CISCO, Chwee Koh served in the Singapore Armed Forces (SAF) for 22 years and retired from SAF in 2004 with the rank of Brigadier-General.

He is currently an Independent Director of Raffles Education Ltd (listed on SGX); an Independent Director of Trident Digital Tech Holdings Ltd (listed on Nasdaq); Senior Advisor at Vizzio Technologies Pte Ltd; a member of the Audit Committee of Dementia Singapore (a charity); and a council member at the RHT G.R.A.C.E. Institute, a social enterprise that promotes ethical leadership.

As an Independent Director of SDAX, Chwee Koh leverages his background in operations, technology and organisational leadership to support the Board in enhancing operational resilience, strengthening technology governance and advancing strategic digital initiatives across the Exchange.

Chwee Koh graduated with a Bachelor of Science in Mechanical Engineering & Economics (First Class Honours) from the University of Birmingham in 1985. He holds a Master of Public Administration from Harvard University and has also completed the Advanced Management Programme at Harvard Business School.

Thomas McMahon is an exchange architect with over 30 years of experience across US and Asian exchange and regulatory frameworks, with a focus on the development of exchange-traded, cleared futures and over-the-counter products.

His experience in exchange architecture and strategic development includes serving on the West Texas Intermediate Petroleum Advisory Board and contributing to LPG product development and trading; chairing the Natural Gas Advisory Committee, where he helped launch the Henry Hub contract in 1991; extensive work in LNG and LPG product development and trading, including acting as a market maker and serving as Ring Chairman; and early adoption of BitGold, leveraging the platform for transactions backed by physical gold holdings.

His role as an Independent Director of SDAX is to provide strategic advice and guidance on the exchange’s operations and long-term development.

Tung Siew Hoong is a senior investment professional with long and distinguished career in global asset management, fixed income investing and institutional governance. He serves as an Independent Director of The Great Eastern Life Assurance Company Limited, Great Eastern General Insurance Limited and Lion Global Investors Limited, and sits on the Investment Committee of Singapore Bible College as well as the Finance and Investment Committee of the Singapore Golf Association.

Siew Hoong spent more than three decades with GIC Private Limited, where he held several senior leadership positions, including Managing Director, Head of the Portfolio Execution Group and Head of Fixed Income, following earlier roles as Portfolio Manager and Senior Economist. He has also contributed extensively to public sector and industry governance through appointments with the MAS Singapore Foreign Exchange Market Committee, the Central Provident Fund Board and the Emerging Markets Traders Association. He previously served as an Independent Director of Aldigi Holdings Pte. Ltd. He was awarded the Public Service Medal (Pingat Bakti Masyarakat) in 2017.

As an Independent Director, Siew Hoong draws on his expertise in investment governance, portfolio risk management and institutional oversight to support the Board in strengthening market integrity, governance standards and the Exchange’s strategic positioning.

Siew Hoong holds a Master of Social Sciences in Statistics and a Bachelor of Social Sciences (Honours) in Economics and Statistics from the National University of Singapore. He is a Chartered Financial Analyst (CFA) Charterholder and a member of both the CFA Institute and CFA Society Singapore.