YOUR BOARD OF DIRECTORS

GOVERNANCE AT MERCURY.

YOUR BOARD OF DIRECTORS.

PRUE FLACKS // CHAIR First Appointed // 1 May 2010 Last Elected // 28 September 2021 Appointed Chair of the Board in September 2019 Key Skills*: Governance; commercial experience; stakeholder relationships; people leadership. Prue was appointed a Director of Mercury in May 2010 and Chair of the Board in September 2019. Prue is a professional director with experience across a range of industries. She was formerly a commercial lawyer and a partner in the national law firm Russell McVeagh for 20 years. Her expertise included corporate and regulatory matters, corporate finance, capital markets and business restructuring. Prue is a chartered member of the Institute of Directors, and was formerly a director of Chorus Limited, Bank of New Zealand and chair of Queenstown Airport Corporation. Prue is the Chair of our Nominations Committee, and a member of our People and Performance Committee and Risk Assurance & Audit Committee by virtue of her position as Board Chair. DENNIS BARNES // DIRECTOR First Appointed // 1 September 2021 Last Elected // 23 September 2021 Key Skills*: Energy industry; people leadership; major project investment. Dennis was appointed to the Board with effect from 1 September 2021. He was most recently Chief Executive of Contact Energy, a nine year role during which he led Contact Energy’s investment in renewable energy and flexible generation (including construction of the Te Mihi geothermal power station, the development of the Tauhara field and the introduction in 2011 of the Ahuroa gas storage facility and Stratford peaking plant). Prior to Contact, Dennis held several senior roles at Origin Energy, and guided Origin’s significant and expanding operations in wholesale markets building on the experience in international energy markets he gained from commercial roles at Scottish Power and Scottish and Southern Energy. Dennis holds a BSc(Hons), GradDip (Marketing) and MBA. Dennis is a member of our Risk Assurance & Audit Committee. HANNAH HAMLING // DIRECTOR First Appointed // 1 February 2020 Last Elected // 24 September 2020 Key Skills*: Natural resource management (including water and climate change); health & safety; risk management. Hannah Hamling joined the Mercury Board in February 2020. She is an environmental scientist with a particular interest in sustainable development and resilience. Until January 2020, she was President of the Asia Pacific Region and Global Sustainable Development Leader for Golder, a Canadian global ground engineering and environmental science company. Prior to joining Golder, Hannah was Managing Director of New Zealand environmental consultancy firm Kingett Mitchell. Hannah has extensive background in consulting, management and board roles across various sectors including electricity, construction and water management. Hannah is a member of our Risk Assurance & Audit Committee. ANDY LARK // DIRECTOR First Appointed // 10 July 2014 Last Elected // 24 September 2020 Key Skills*: Digitisation, disruption and innovation; broad experience in customer facing businesses. Andy Lark joined the Mercury Board in July 2014. He has a background in entrepreneurship, marketing and digital technologies. Andy is currently the Chair of Group Lark, an accelerant for brand and digital transformations, and Chief Marketing and Strategy Officer for Dubber, a provider of cloud-based call recording and voice AI. Prior roles include Chief Marketing & Online Officer for the Commonwealth Bank of Australia, Chief Marketing Officer for Dell’s Large Enterprise & Public Group, Chief Marketing and Digital Officer for Foxtel, and Chief Business Officer for Xero. Andy is a member of our People & Performance Committee. Andy will retire from the Board on 22 September 2022 after over 8 years' service. JAMES MILLER // DIRECTOR First Appointed // 2 May 2012 Last Elected // 27 September 2019 Key Skills*: M&A and capital structure; investment analysis; audit and risk management; energy industry. James Miller was appointed a director of Mercury in May 2012. He is Chair of NZX and a director of The New Zealand Refining Company. James was recently appointed as a director of Vista Group International, with effect from 31 August 2021. He has specialist expertise in utility economics and 15 years’ experience in capital markets. James’ prior roles included director and Head of NZ Wholesale Equities with Craigs Investment Partners, and Head of Equities and Head of Research at ABN AMRO. James is a Fellow of the Institute of Finance Professionals and the New Zealand Institute of Chartered Accountants. James is the Chair of our Risk Assurance & Audit Committee, and a member of our Nominations Committee.

GOVERNANCE AT MERCURY.

SCOTT ST JOHN // DIRECTOR First Appointed // 1 September 2017 Last Elected // 24 September 2020 Key Skills*: M&A and capital structure; stakeholder relationships; commercial experience; people leadership. Scott St John joined the Mercury Board in September 2017. He has an extensive background in investment advisory and capital markets. Scott is Chair of Fisher & Paykel Healthcare Corporation and a director of Fonterra Cooperative Group, ANZ New Zealand, and Next Foundation. He was formerly a member of the Capital Markets Development Taskforce and the Financial Markets Authority Establishment Board, and was Chancellor of the University of Auckland. He was the Chief Executive of First NZ Capital from 2002 to 2017. Scott is the Chair of our People & Performance Committee. PATRICK STRANGE // DIRECTOR First Appointed // 1 February 2014 Last Elected // 24 September 2020 Key Skills*: Energy industry; major project investment; health and safety. Patrick Strange joined the Mercury Board in February 2014. He was previously a director of our company in 2006-2007 before being appointed Chief Executive of New Zealand’s transmission owner and operator, Transpower New Zealand Limited, a position he held for more than six years. Patrick currently chairs Chorus and Auckland International Airport and was previously a Director of NZX Limited and Essential Energy, Australia. Patrick is a member of our Risk Assurance & Audit Committee and Nominations Committee. LORRAINE WITTEN // DIRECTOR1 First Appointed // With effect from 1 September 2022 Key Skills*: Governance; commercial experience; audit and risk management; innovation. Lorraine is an experienced director and business leader with an extensive background in the telco, technology and ICT sectors. Lorraine currently chairs MOVe Logistics Group and Rakon, and is an independent director of Pushpay Holdings. Lorraine has energy sector experience, having been a director of Horizon Energy Group. Lorraine’s previous appointments include as an Advisory Board Member and Audit Committee Chair of the Department of Corrections, Board member WREDA, and director and chair of Kordia Group for several years.

*Key Skills are defined as the particular skills each director brings to the Mercury Board, and what we would need to consider replacing when that director retires. MIKE TAITOKO // DIRECTOR First Appointed // 28 August 2015 Last Elected // 23 September 2021 Key Skills*: Iwi and other stakeholder relationships; natural resource management (including water and climate change); digitisation. Mike Taitoko was appointed to the Board in August 2015. He is a leading advisor on Māori economic development and has well-established networks in Māoridom. Mike has strong commercial skills in the application of digital technologies and is the co-founder and CEO of Takiwa Limited, a technology company commercialising cloud-based geospatial analytics services. He was formerly a Director of Auckland Tourism Events and Economic Development (ATEED). Mike is a member of our People & Performance Committee.

1. Lorraine was not a director during the reporting period. Lorraine joins the Board on 1 September 2022 and will stand for election at the 2022 ASM in September. KIM GORDON // FUTURE DIRECTOR First Appointed // 1 May 2021 Key Skills*: Digitisation; experience in customer businesses. Kim is a partner at MinterEllison, specialising in technology consulting. She has a wide range of experience with public and private organisations, across legal, energy and finance sectors, and an extensive background in technology and technology-centric transformation. As a Future Director, Kim is invited to attend Mercury Board meetings and Committee meetings, although she does not participate in decision making.