Robert Milliner is an independent director of AusNet Services Ltd., an independent director of the Global Infrastructure Hub Ltd (a G20 initiative), Chairman of the Australian Payments Council and a member of the APEC Business Advisory Council.

He is also a Senior Adviser at UBS and a Senior Adviser to the Secretary General of the International Chamber of Commerce.

He was the B20 Sherpa for Australia for 2014, a member of the Steering Committee for Turkey B20 2015, Senior Adviser to China B20 2016, Special Adviser to Germany B20 2017 and Senior Director B20 Saudi Arabia 2020.

From 2004-2011 he was Chief Executive Partner of Australia's pre-eminent international law firm Mallesons Stephen Jaques (now King & Wood Mallesons). In his role as Chief Executive he lead the merger of Mallesons and King & Wood (a PRC firm), which was a world first. He was a partner of Mallesons for 28 years and specialized in mergers & acquisitions, infrastructure and was recognized as one of the world’s leading energy lawyers.

Robert is an Honorary Member of the Business Council of Australia and member of the Economic Policy and Competitiveness and Energy and Climate Change Committees; he was a director of the Business Council 2005-2011.

He has a Bachelor of Commerce and Bachelor of Laws (Hons) from the University of Queensland and a Master of Business Administration from the University of Western Australia and has attended the Advanced Management Program at Harvard Business School.

Katherine Sierra is a non-resident Senior Fellow of Global Economy and Development at The Brookings Institution.

Previously Ms Sierra held senior leadership positions at the World Bank, including Vice President for Sustainable Development (2007-2010); Vice President, Infrastructure (2004-2007): Vice President, Human Resources
(2001-2004); and Vice President for Operational Core Services (1999-2000).

Ms Sierra is a member of the External Advisory Council for the Ingersoll Rand Center for Energy Efficiency, and is on the Sustainability Advisory Committee for the FMC Corporation. She is the Chair of the Gold Medal Jury for the World Environment Center's Corporate Sustainability Leadership Award. She co-chaired an external task force which addressed issues of Gender Based Violence in World Bank Investment Projects, and is currently co-chair of the Oxfam Independent Commission addressing Sexual Misconduct and Culture Change at that organization.

Ms Sierra has a Bachelor of Arts (Anthropology and Hispanic Civilization), University of California Santa Barbara (1976), a Masters in City and Regional Planning from the Graduate School of Design at Harvard University (1978) and has also completed the General Managers Program at the Harvard Business School (1998).

Ms. Katharine Rechico is the Assistant Deputy Minister of International Trade and Finance at the Department of Finance Canada, since April 2019. Ms. Rechico has substantial international finance and economic policy experience.

Previously, Ms. Rechico was the Assistant Secretary to the Cabinet, Liaison Secretariat for Macroeconomic Policy at the Office of the Privy Council of Canada.

Ms. Rechico also held other senior positions in the Department of Finance, including Director General of International Finance and Development and Acting Director General of Federal Provincial Relations.

Ms. Rechico has also served as the Economics and Finance Counsellor at the Canadian Delegation to the Organisation for Economic Co-operation and Development (OECD) in Paris, France.

Ms. Rechico holds a Master’s degree in Economics from Queens University, and a Bachelor of Arts with Honours in Economics from the University of Alberta.

Mr. Rakan Bin Dohaish is currently the Director-General of the International Financial Institutions at the Ministry of Finance and Secretary of Saudi Arabia’s G20 Program.

He previously served as a Senior Policy Advisor and Policy Lead for the Saudi G20 Infrastructure Working Group (IWG) at the Saudi G20 Finance Track. Prior to this role, Mr. Bin Dohaish was a Senior Investment Analyst with the Saudi Central Bank (SAMA) Investment Deputyship.

Mr. Bin Dohaish is a seasoned public speaker holding an MBA in Finance from Oklahoma City University and a Bachelor of Science in Public Administration from King Saud University.