Steel Director Disclosure 4 August 2025

Ongoing Disclosure Notice Disclosure of Directors and Senior Managers Relevant Interests Sections 297(2) and 298(2), Financial Markets Conduct Act 2013 To NZX Limited; and Name of listed issuer: Mainfreight Limited Date this disclosure made: 4/08/2025 Date of last disclosure: 1/03/2024 Director or senior manager giving disclosure Full name(s): Annie Steel Name of listed issuer: Mainfreight Limited Name of related body corporate (if applicable): Not applicable Position held in listed issuer: Director Summary of acquisition or disposal of relevant interest (excluding specified derivatives) Class of affected quoted financial products: Ordinary Shares Nature of the affected relevant interest(s): Owned For that relevant interest- Number held in class before acquisition or disposal: 710 Number held in class after acquisition or disposal: 1530 Current registered holder(s): Annie Steel Registered holder(s) once transfers are registered: Annie Steel Details of transactions giving rise to acquisition or disposal Total number of transactions to which notice relates: 1 Details of transactions requiring disclosure- Date of transaction: 1/08/2025 Nature of transaction: On Market Purchase Name of any other party or parties to the transaction (if known): Unknown The consideration, expressed in New Zealand dollars, paid or received for the acquisition or disposal. If the consideration was not in cash and cannot be readily by converted into a cash value, describe the consideration: $60.00 per share Number of financial products to which the transaction related: 820 ordinary shares If the issuer has a financial products trading policy that prohibits directors or senior managers 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: No Whether prior written clearance was provided to allow the acquisition or disposal to proceed during the closed period: Not applicable Date of the prior written clearance (if any): Not applicable Summary of other relevant interests after acquisition or disposal: Class of quoted financial products: Ordinary Shares Nature of relevant interest: Owned For that relevant interest,- Number held in class: 1530 Current registered holder(s): Annie Steel For a derivative relevant interest,- Type of derivative: 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: 4/08/2025 Name and title of authorised person: Graeme Illing CFO