MERCURY NZ LIMITED — Director's Dealing 2021

Jul 29, 2021

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STOCK EXCHANGE LISTINGS: NZX (MCY) / ASX (MCY)

Initial Disclosure Notice

30 July 2021

Attached is an Initial Disclosure Notice for Stewart Hamilton which has been disclosed to the NZX today.

ENDS

Howard Thomas General Counsel and Company Secretary Mercury NZ Limited

For investor relations queries, please contact: For media queries, please contact: Tim Thompson Shannon Goldstone Head of Treasury and Investor Relations Communication Manager 0275 173 470 Media phone: 027 210 5337

ABOUT MERCURY NZ LIMITED

Mercury’s mission is energy freedom. Our purpose is to inspire New Zealanders to enjoy energy in more wonderful ways and our goal is to be New Zealand’s leading energy brand. We focus on our customers, our people, our partners and our country; maintain a long-term view of sustainability; and promote wonderful choices. Mercury is energy made wonderful. Visit us at: www.mercury.co.nz

PHONE:[+ 64 9 308 8200 ] FAX: + 64 9 308 8209

The Mercury Building, 33 Broadway, Newmarket 1023 PO Box 90399, Auckland 1142 New Zealand

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mercury.co.nz

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Initial Disclosure Notice

Disclosure of Directors and Senior Managers Relevant Interests

Sections 297(1) and 298(1), Financial Markets Conduct Act 2013

To NZX Limited; and Name of listed issuer: Date this disclosure made: Date on which issuer listed or appointment made:

Mercury NZ Limited 30 July 2021 26 July 2021

Director or senior manager giving disclosure

Full name: Name of listed issuer: Name of related body corporate (if applicable): Position held in listed issuer:

Stewart Allan Hamilton Mercury NZ Limited N/A GM Generation

Summary of relevant interest (excluding specified derivatives)

Class of quoted financial product: Number held in class: Nature of relevant interest:

Current registered holder:

Ordinary shares (NZX: MCY)
1,500	1,500	1,500
Registered holder and beneficial owner	Power to acquire or dispose of, or to control the acquisition or disposition of, or power to exercise, or to control the exercise of, a right to vote attached to ordinary shares	Power to acquire or dispose of, or to control the acquisition or disposition of, or power to exercise, or to control the exercise of, a right to vote attached to ordinary shares
Stewart Allan Hamilton	Lara Nicole Hamilton	Aimee Elizabeth Hamilton

Summary of specified derivatives relevant interest (if applicable)

Type of derivative: Class of underlying financial products:

Details of derivative

The notional value of the derivative (if any) or the notional amount of underlying products (if any): A statement as to whether the derivative is cash settled or physically settled: Maturity date of the derivative (if any): Expiry date of the derivative (if any): The price specified in the terms of the derivative(if any):

Any other details needed to understand how the amount of the consideration payable under the derivative or the value of the derivative is affected by the value of the underlying financial products:

For that derivative,-

Parties to the derivative: If the director or senior manager is not a party to the derivative, the nature of the relevant interest in the derivative:

Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable Not applicable

Certification

I, certify that, to the best of my knowledge and belief, the information contained in this disclosure is correct and that I am duly authorised to make this disclosure by all persons for whom it is made. Signature of director or officer: Date of signature: or Signature of person authorised to sign on behalf of director or officer: Date of signature: Name and title of authorised person:

30 July 2021 Kendal Luskie, Legal Counsel