Board of Directors

Jack is a professional director who has held senior leadership positions within media, telecommunications and technology industries across Australasia. He is currently a director at Chorus and was previously chair of Mediaworks NZ, as well as a director at Plexure, Network for Learning, Crown Fibre Holdings, APN Outdoor, and Trilogy Natural Products.

Jack holds a Bachelor of Arts in Philosophy from the College of William and Mary and is a chartered member of the New Zealand Institute of Directors.

Gary’s governance and leadership experiences include CEO of Pulse Energy, CEO of TransAlta New Zealand, Executive Chair of EnSource Energy Corporation, President of AltaGas Income Trust, and CEO of ENMAX Corporation. Gary led TransAlta’s development and construction role of the first two non-government electricity generation projects (Southdown, TCC).

Gary holds a Bachelor of Science in Mechanical Engineering from the University of Calgary.

Joanna has been a professional independent director since 2007 and has been the lead director in relation to audit and risk for most governance roles. Joanna was appointed a Member of the New Zealand Order of Merit in recognition of her services to accounting in 2010. Joanna’s governance experiences include roles at Genesis Energy, Trade Me, Oyster Property, Partners Life, Nyriad, Kiwi Property Group and the IFRS Foundation.

Joanna is also a director of EX-HTL Limited which was placed into voluntary administration on 11 March 2026.

Joanna holds a Bachelor of Arts from the University of Cambridge and qualified as a member of the Institute of Chartered Accountants in England and Wales and is a life member of Chartered Accountants Australia and New Zealand and a chartered fellow of the New Zealand Institute of Directors.

Susan has been a professional independent director since 1996 and was appointed an Officer of the New Zealand Order of Merit in recognition of her services to corporate governance in 2016. Susan is currently Chair of Steel and Tube and Theta, and a director of Reserve Bank of New Zealand, EROAD and Les Mills Holdings. Her former directorships include Arvida Group, Goodman Property, Electricity Authority, Sky TV, Transpower, St Cuthbert’s College, the NZ Eco Labelling Trust, Energy Efficiency and Conservation Authority, Housing New Zealand and Ports of Auckland.

Susan holds a Bachelor of Pharmacy from the University of Otago and a Master of Science in Business Studies from London Business School and is a chartered fellow of the New Zealand Institute of Directors.

Andrew is a director in the Investment Banking team at Jarden. He has over 20 years of experience in capital markets, mergers and acquisitions. Andrew specialises in the energy and infrastructure sector, as well as assisting with raising and structuring debt financing. Andrew has been associated with Lodestone almost from its inception, as an adviser, investor and director. Andrew is also a director of Hellers Group.

Andrew holds a Bachelor of Management Studies with Honours and a Master of Management Studies from the University of Waikato.

Mary is an experienced chief executive and director with deep expertise in customer and transformation. Currently she is CEO of Foodstuffs South Island and a director of ChristchurchNZ and is transitioning to a governance portfolio later in the year. Mary’s previous directorships include Meridian Energy, IAG, Briscoes, Hallenstein Glassons, and Christchurch City Holdings. Mary was appointed an Officer of the New Zealand Order of Merit for services to business.

Mary holds a Bachelor of Commerce from the University of Otago, a Master of Business Administration from the University of Canterbury and is a chartered fellow of the New Zealand Institute of Directors.

Michael Cummings is an experienced director and former energy executive with more than 35 years’ experience across New Zealand, Australian and UK energy and infrastructure markets. He has held senior roles with Vector, Brookfield Infrastructure and AMP Capital, with deep experience in capital allocation and institutional investment. Michael was a director of Powerco for over 15 years, chairing its Regulatory and Asset Management Committee, and also served as a director of Endeavour Energy, Melbourne Airport, and chair of Evergen. His expertise spans electricity networks, renewable energy, capital markets, governance and large-scale infrastructure operational leadership.

Michael holds a Bachelor of Mechanical Engineering (Honours) from the University of Edinburgh and is a Fellow of the Australian Institute of Company Directors and a Chartered Member of Engineering New Zealand.