MERCURY NZ LIMITED — Director's Dealing 2024

Apr 18, 2024

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Ongoing Disclosure Notice

Disclosure of Directors and Senior Managers Relevant Interests

Sections 297(2) and 298(2), Financial Markets Conduct Act 2013

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----- Start of picture text ----- To NZX Limited; andName of listed issuer: Mercury NZ LimitedDate this disclosure made: 18 April 2024Date of last disclosure: 19 October 2023Director or senior manager giving disclosureFull name(s): Scott Andrew St JohnName of listed issuer: Mercury NZ LimitedName of related body corporate (if applicable): Not applicablePosition held in listed issuer: DirectorSummary of acquisition or disposal of relevant interest (excluding specified derivatives)Class of affected quoted financial products: Ordinary Shares (NZX: MCY)Nature of the affected relevant interest(s): Beneficial ownerFor that relevant interest-Number held in class before acquisition or disposal: 48,258Number held in class after acquisition or disposal: 48,931Current registered holder(s): FNZ Custodians LtdRegistered holder(s) once transfers are registered: Not applicableSummary of acquisition or disposal of specified derivatives relevant interest (if applicable)Type of affected derivative: Not applicableClass of underlying financial products: Not applicableDetails of affected derivative-The notional value of the derivative (if any) or the notional amount of underlyingfinancial products (if any): Not applicableA statement as to whether the derivative is cash settled or physically settled: Not applicableMaturity date of the derivative (if any): Not applicableExpiry date of the derivative(if any): Not applicableThe price specified in the terms of the derivative (if any): Not applicableAny other details needed to understand how the amount of the consideration payableunder the derivative or the value of the derivative is affected by the value of theunderlying financial products:Not applicableFor that derivative,-Parties to the derivative: Not applicableIf the director or senior manager is not a party to the derivative, the nature of therelevant interest in the derivative: Not applicableDetails of transactions giving rise to acquisition or disposalTotal number of transactions to which notice relates: 1----- End of picture text -----

Classification: Confidential

Details of transactions requiring disclosure-

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----- Start of picture text ----- Date of transaction: 2 April 2024Transfer of ordinary shares as aresult of participation in Mercury'sNature of transaction: Dividend Reinvestment PlanName of any other party or parties to the transaction (if known): Mercury NZ LimitedThe consideration, expressed in New Zealand dollars, paid or received for theacquisition or disposal. If the consideration was not in cash and cannot be readily byconverted into a cash value, describe the consideration: $4,485.07Number of financial products to which the transaction related: 673If the issuer has a financial products trading policy that prohibits directors or seniormanagers from trading during any period without written clearance (a closed period)include the following details—Whether relevant interests were acquired or disposed of during a closed period: NoWhether prior written clearance was provided to allow the acquisition or disposal toproceed during the closed period: Not applicableDate of the prior written clearance (if any): Not applicableSummary of other relevant interests after acquisition or disposal:Class of quoted financial products: Not applicableNature of relevant interest: Not applicableFor that relevant interest,-Number held in class: Not applicableCurrent registered holder(s): Not applicableFor a derivative relevant interest,-Type of derivative: Not applicableDetails of derivative,-The notional value of the derivative (if any) or the notional amount of underlyingfinancial products (if any):Not applicableA statement as to whether the derivative is cash settled or physically settled: Not applicableMaturity date of the derivative (if any): Not applicableExpiry date of the derivative (if any): Not applicableThe price's specified terms (if any): Not applicableAny other details needed to understand how the amount of the consideration payableunder the derivative or the value of the derivative is affected by the value of theunderlying financial products: Not applicableFor that derivative relevant interest,-Parties to the derivative:Not applicableIf the director or senior manager is not a party to the derivative, the nature of therelevant interest in the derivative: Not applicableCertificationI, certify that, to the best of my knowledge and belief, the information contained in thisdisclosure is correct and that I am duly authorised to make this disclosure by allpersons for whom it is made.Signature of director or officer:Date of signature:orSignature of person authorised to sign on behalf of director or officer:Date of signature:18 April 2024Howard Thomas, GeneralName and title of authorised person:Counsel----- End of picture text -----

Classification: Confidential