GATEWAY MINING LIMITED — Board/Management Information 2025

May 28, 2025

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ASX Announcement ASX: GML

29 May 2025

Gateway Announces Board Appointment

Highly experienced geologist David Crook appointed as Non-Executive Director

Gateway Mining Limited (ASX: GML) ( Gateway or Company ) is pleased to announce the appointment of highly experienced geologist and mining director Mr David Crook as Non-Executive Director.

David Crook is a geologist and company director with over 40 years’ experience. Mr Crook is considered an expert gold explorer and has a strong background in base and battery metals.

He was the inaugural Managing Director of Pioneer Resources Limited, a role he held for 16 years. During this period of time, David managed the team that discovered and developed the Sinclair Caesium Deposit, and also discovered the Dome North Spodumene Deposit, that ultimately resulted in the takeover by Develop Limited.

Mr Crook is currently Managing Director of ASX listed Tyranna Resources Ltd (ASX:TRL).

Following this announcement, the structure of the Board and its officers will be as follows:

• Mr Peter Langworthy – Executive Chair;

• Mr Trent Franklin – Non-Executive Director;

• Mr Peter Lester – Non-Executive Director;

• Mr David Crook – Non-Executive Director; and

• Kar Chua – Company Secretary.

Gateway’s Executive Chairman, Mr Peter Langworthy, said: “We are delighted to welcome David Crook to the Gateway board. David brings a wealth of technical expertise and leadership experience across a broad suite of commodities, particularly gold and base metals, which are central to Gateway’s strategic focus. His proven track record of discovery, development and company growth particularly in Western Australia will be invaluable as we advance our exploration ambitions. We look forward to benefiting from his insights and guidance as we continue to unlock the potential of our projects.”

This release has been authorised by:

Peter Langworthy Executive Chairman

For and on behalf of

GATEWAY MINING LIMITED

LinkedIn: @gateway-mining Twitter: @gateway_mining www.gatewaymining.com.au

Gateway Mining Ltd

B1/431 Roberts Road Subiaco WA 6008

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Investors Peter Langworthy Executive Chairman T: 08 6383 9969 or Kar Chua Company Secretary T: 02 8316 3998

Media Nicholas Read Read Corporate T: 08 9388 1474

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