Mrs Koh is Chairperson of the Remuneration Committee and a member of the Audit & Risk Committee. She is a Director of HSBC Bank (Singapore) Limited, Manulife US Real Estate Management Pte Ltd, K3 Venture Partners, BC Platforms AG, Switzerland and Lasalle College of the Arts Limited. 

She is also a Non-Executive Director of Butterfield Trust Asia Limited. Mrs Koh was CEO and Executive Director of IP Investment Management, Singapore, from 2016 to 2018. Prior to this, she was Deputy CEO of SingHealth from 2001 to 2008 and concurrently Deputy CEO of Singapore General Hospital till 2008.

She started her career at the Singapore Ministry of Finance, which included postings at the Inland Revenue and the Monetary Authority of Singapore. Mrs Koh holds a Bachelor of Arts (Honours) in Economics from Cambridge University and a Master of Public Administration and International Tax Program (Certificate) from Harvard University.