Mineral Resources Statement as at 30 June 2026

• Gold Mineral Resources at Central Tanami Project Joint Venture total 31.0 Mt at 2.8 g/t Au for 2.8 Moz contained gold
• MGX's equity share of the gold resources is 1.4 Moz
• Koolan Island iron ore Mineral Resources reduced to 3.3 Mt grading 59.3% Fe
• All Koolan Island Ore Reserves depleted or declassified following a major rockfall
• Binding agreement to divest Koolan Island to Crestlink Koolan Pty Ltd

MGX Resources Ltd. reports its mineral resources as at 30 June 2026, reflecting gold mineralisation within the Central Tanami Project Joint Venture (CTPJV) in the Northern Territory and remaining iron ore mineralisation at the Koolan Island iron ore mine in Western Australia. The CTPJV totals 31.0 million tonnes (Mt) at 2.8 grams per tonne gold (g/t Au) for 2.8 million ounces (Moz) of contained gold, with MGX's 50% interest equating to 1.4 Moz. Koolan Island's iron ore resources have decreased to 3.3 Mt grading 59.3% Fe, with all ore reserves depleted or declassified following a major rockfall in October 2025. MGX has agreed to divest Koolan Island to Crestlink Koolan Pty Ltd, with settlement targeted for late 2026.

MGX and its joint venture partner Tanami Gold NL are working to progress the CTPJV to a development decision in the shortest possible timeframe. MGX does not expect to hold any iron ore Mineral Resources after settlement of its agreement to divest the Koolan Island operation to Crestlink Koolan Pty Ltd.