Ms Withers is the Chair of The Warehouse Group and Non-executive Director of Sky Network and ANZ Bank New Zealand. She is a Trustee of the Sweet Louise Foundation. Ms Withers has been a director for more than 20 years, and had an executive career spanning 25 years in the media industry, including roles as Chief Executive Officer of The Radio Network and Fairfax Media. Ms Withers was formerly Chairman of Mercury Energy and prior to that a Non-executive Director of Meridian Energy.

Ms Atlas is Chair of Coca-Cola Amatil and Non-executive Director of Australia and New Zealand Banking Group Limited. She is also Chairman of Jawun Pty Ltd; a director of Paul Ramsay Foundation and Panel Member of Adara Partners. Ms Atlas has financial services and legal experience and has held executive and non-executive roles across many sectors. She was Group Executive, People and Group Secretary and General Counsel at Westpac Banking Corporation, and prior to this was a partner at law firm Mallesons Stephen Jaques (now King & Wood Mallesons), where she also held a number of management roles. Ms Atlas was a director of Treasury Corporation of New South Wales, Westfield Group and Suncorp.

Mr McCormack is Non-executive Director of Austal Limited and Chairman of Central Petroleum Limited. He is also Chairman of the Australian Brandenburg Orchestra Foundation and a director of the Clontarf Foundation. Mr McCormack was previously Managing Director and CEO of APA Group (2005-2019) and has more than 36 years of experience in the energy and infrastructure sectors, including gasfired and renewable energy power generation, gas processing, LNG and underground storage. Prior to joining APA in 2000, Mr McCormack held various senior management roles with AGL Energy.

Mr Calabria is a Director of the Australian Energy Council and the Australian Petroleum Production & Exploration Association. He is a former Chairman of the Australian Energy Council and former Director of the Australian Energy Market Operator. He is a Member of the Health, Safety and Environment Committee.

Mr Perkins has experience as a non-executive director and as a former advisor in corporate strategy, mergers, acquisitions and capital markets. Mr Perkins is a non-executive Director of Woolworths Limited and Brambles Limited. He was previously a Director of the Museum of Contemporary Art in Sydney and a non-executive Director of Meridian Energy. Mr Perkins is a supporter of breast cancer causes, the visual arts, and public policy development. He is a member of the People, Health, Safety and Environment and Risk committees of ORG.

Ms Brenner was previously a Managing Director of Investment Banking at Investec Bank (Australia) Ltd. Prior to Investec, she was a Lecturer in Law at the University of NSW and a lawyer at Freehills, specialising in corporate law. She is a Member of the University of NSW Council. Her former directorships include Treasury Corporation of NSW, Bulmer Australia Ltd, Neverfail Springwater Ltd (1999-2003) and Federal Airports Corporation, where she was Deputy Chair. She has served as a Council Member of the State Library of NSW and as a Member of the Takeovers Panel. She is Chairman of the Risk Committee.

Mr Morgan is Chairman of Transport Asset Holding Entity of New South Wales (since July 2020), Sydney Water Corporation (since October 2013), a Director of Redkite, the University of NSW Foundation and Deputy Chair of the European Australian Business Council. He served as Chairman of the Board of PricewaterhouseCoopers (PwC) Australia between 2005 and 2012. In 2009, he was elected as a Member of the PwC International Board, serving a four-year term. He was previously a Director of Caltex Australia Ltd (2013 to May 2020) and Managing Partner of PwC's Sydney and Brisbane offices. An audit partner of the firm for over 25 years, he was having focus on the financial services and energy and mining sectors some of the firm's clients in Australia and internationally. He is a Member of the Health, Safety and Environment and Risk committee.

Mr Sargent executive career included 22 years at General Electric, where he led businesses across the USA, Europe and Asia Pacific. He was President and CEO of GE Mining, GE's mining technology and services business. Prior to this he was President and CEO of GE Australia, NZ & PNG where he had local responsibility for GE's Energy, Oil and Gas, Aviation, Healthcare and Financial Services businesses. Over recent years he has been a Non-executive Director of Veda Group Ltd (2015-2016). He is Chairman of the People Committee and a Member of the Health, Safety & Environment and Risk committee.

Mr Lalicker is the Chief Executive Officer of Hilcorp Energy Company, based in Houston, USA. He serves it's leadership team as Executive Vice President where he was responsible for all exploration and production activities in 2006 then President in 2011 and Chief Executive Officer in 2018. Prior, he was with BHP Petroleum based in Midland, Houston, London and Melbourne as well as McKinsey & Company where he worked in its Houston, Abu Dhabi and London offices.

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