The Monetary Authority of Singapore (MAS) has announced a reshuffle of its senior management, with four senior officials taking on new roles from 1 November 2026. In a media release on 1 October 2026, MAS said the changes cover its corporate development, policy and financial crime, and development and international portfolios.
The most closely watched move for compliance teams is at the top of the Policy, Payments & Financial Crime Group, which covers prudential policy, anti-money laundering (AML), enforcement and the supervision of payment services providers. That portfolio is changing hands, and the Executive Director of MAS' Anti-Money Laundering Department is also moving into a new role.
Who is moving where
Jacqueline Loh is stepping down after 13 years as a Deputy Managing Director, most recently for Corporate Development, and moving into the Managing Director's office as Principal Advisor. The new post is an advisory one, and her brief there covers governance, risk and leadership development. Outside MAS' management line, she remains Chair of the Board of the Singapore Payments Network (SPaN). Ms Loh joined MAS in 1987.
Loo Siew Yee, currently Assistant Managing Director (Policy, Payments & Financial Crime), will succeed Ms Loh as Deputy Managing Director (Corporate Development). The job puts her in charge of the central bank's internal machinery: its people and organisation function, its technology teams, and its finance, risk and currency operations. Ms Loo joined MAS in 1998.
Gillian Tan will take over from Ms Loo as Assistant Managing Director (Policy, Payments & Financial Crime). She moves from her current role as Assistant Managing Director (Development & International). Ms Tan joined MAS in 2015 and has previously served as its Chief Sustainability Officer and as Executive Director of the Financial Markets Development and Enforcement departments.
Thong Leng Yeng, currently Executive Director of the Anti-Money Laundering Department, will step up to Assistant Managing Director (Development & International). Her new group handles MAS' relationships with overseas counterparts and its work to grow Singapore as a financial hub. Ms Thong joined MAS in 2007 and has also led its Financial Centre Development Department.
A tribute to Jacqueline Loh
MAS Managing Director Chia Der Jiun thanked Ms Loh for her work. He noted that her portfolios as Deputy Managing Director spanned Markets and Investment, Development & International, and Corporate Development, and that she chaired the Bank for International Settlements (BIS) Markets Committee for six years.
"Jacqueline has made significant and enduring contributions to MAS... I am very glad that we will continue to benefit from her experience," by Chia Der Jiun, Managing Director of the Monetary Authority of Singapore
Mr Chia credited Ms Loh with managing both the returns and the risks of Singapore's official foreign reserves, with initiatives that lifted the city's standing as a financial and FinTech centre, and, in recent years, with work on leadership development and organisational change inside MAS.
Why it matters for compliance teams
For banks and payment services providers, the key change is who sets direction on AML, enforcement and payments supervision. Ms Tan brings direct enforcement experience to the role, having previously run MAS' Enforcement Department. She takes over a portfolio with several live workstreams, including MAS' proposed Payment Services Act amendments for stablecoins and the planned widening of the COSMIC information-sharing platform for financial crime.
Ms Thong's move also leaves the Anti-Money Laundering Department in need of a new Executive Director. The media release does not name her successor there.
Leadership renewal elsewhere in Singapore
MAS is not the only Singapore institution changing its leadership. The Law Society of Singapore, for example, is searching for a new Chief Executive Officer to steer its reforms, after an independent review of how the Society is led, governed and run as a workplace.
The changes take effect on 1 November 2026. The full announcement, including biographies of all four officials, is available on the MAS website.
