ADMIRALTY RESOURCES NL. DISCLOSURECurrent Reports (8-K / ad hoc)

June Quarterly Activities Statement

Admiralty Resources NL Activities Report for the quarter ended 30 June 2026 Page 1 30 July 2026 For the quarter ended 30 June 2026 Admiralty Resources NL (ASX: ADY) (Admiralty or the Company) has progressed production at its flagship Mariposa magnetite Iron Ore Project in Chile amid continuing solid demand for iron ore, as highlighted in this Quarterly Activities Report for the period ending 30 June 2026. Exploration and Quarterly Activities Mariposa The June Quarter 2026 saw the Company achieve significant permitting and infrastructure progress at the Mariposa project, together with continued operational ramp-up, geological drilling and expansion works. A key achievement was regulatory approval of the electricity connection and the development of alternative transport routes to Las Losas and Guacolda II ports, improving export flexibility and reducing reliance on the originally approved logistics route. The production summary for the quarter was as follows: Month Mining/Production April 2026 Mining: 26,144 tonnes Ore concentrate: 9,016 tonnes May 2026 Mining: 16,751 tonnes Ore concentrate: 5,632 tonnes June 2026 Mining: 37,653 tonnes Ore concentrate: 17,000 tonnes Total Total Quarterly Mining: 80,548 tonnes (down 16.1% on prior quarter) Total Quarterly Iron Ore Concentrate: 31,648 tonnes (down 26.3% on prior quarter) Average grade: Fe 65% Table 1: Mariposa mining and production summary The Company plans to blast Platform 1 during July 2026, producing 50,000 tonnes of ore and excavating and transporting 65,000 tonnes of ore. For personal use only Admiralty Resources NL Activities Report for the quarter ended 30 June 2026 Page 2 Resource Development Drilling Diamond drilling of 3,303 metres was completed during the quarter, with the Company launching a drilling campaign to increase its resource base including 300m at the La Chu Lula mining area. Exploration Drilling Admiralty has also commenced diamond drilling at the Cooper deposit of the El Cojin mine, with 700m of drilling planned. Infrastructure In a major milestone, the Company completed commissioning of the 23 kv transmission line for direct power supply to the Mariposa mine (refer ASX release 4 May 2026), securing direct access to grid electricity and reducing electricity costs from using fuel generators.