Announcement PDF 8 April 2025 CONTINUED OPERATIONAL IMPROVEMENT QUARTER ON QUARTER • Hillgrove has delivered a record quarter copper production of 2,952 tonnes, which is up 12% on the December 2024 quarter of 2,637 tonnes • 316k tonnes of ore was processed at a grade of 0.99% Cu and a 94.2% recovery • Hillgrove remains on track to achieve CY2025 production guidance of 12,000 to 14,000 tonnes of copper, and is expected to grow further into 2026 with the accelerated development of Nugent Hillgrove Resources Ltd (the “Company” or “Hillgrove”) is pleased to announce its March 2025 quarter production results where the Company has produced a record quarter of copper production of 2,952 tonnes, being the highest quarterly production since processing from underground operations commenced in February 2024. Commenting on the March 2025 monthly physicals, Hillgrove CEO and Managing Director, Bob Fulker said: “It was pleasing to see the operation hit its stride and continue the upward momentum from 2024, with a record quarter achieved for the key physical metrics. These records, leading to a record quarterly production of 2,952 tonnes of copper, came at an opportune time with copper prices at elevated levels. We have set ourselves up well for the rest of 2025, particularly with the development metres achieved in March. I commend the whole team at site for an outstanding result. Mining activity will lift significantly in the coming quarters, with contractors commencing in the Nugent development later this month, which will see increased development metres and tonnes mined within the next 12 months. In addition to this, with the oversubscribed SPP, we can commence a focussed exploration programme beyond Kanmantoo. In April, we expect to be mining through a low grade stoping zone. Despite this, the copper production for the June quarter will be higher than the March quarter. The Company confirms that it remains on track for its 2025 copper production guidance of 12,000 to 14,000 tonnes. March 2025 Monthly and Quarterly Production Kanmantoo Production Metrics Mining Summary Total Development Ore Mined In Situ Copper Mined Processing Summary Ore Processed Copper grade Processed Copper Recoveries Copper Produced Units March 2025 Mar Qtr 2025 Dec Qtr 2024 Q on Q Change (%) m kt tonnes 656 114 1,031 1,817 338 3,228 1,621 311 2,633 12% 9% 23% kt % % tonnes 101 0.99 94.5 944 316 0.99 94.2 2,952 329 0.86 93.5 2,637 (4%) 15% 1% 12% Authorised for release by the Board of Hillgrove Resources Limited. For more information contact: Mr Bob Fulker CEO & Managing Director Tel: +61 (0)8 7070 1698 Mr Joe Sutanto Chief Financial Officer & Company Secretary Tel: +61 (0)8 7070 1698 Hillgrove Resources Limited ACN 004 297 116 Ground Floor, 5-7 King William Road, Unley SA 5061, Australia | T + 61 8 7070 1698 | E info@hillgroveresources.com.au