Announcement PDF 1 of 2 17 AUGUST 2026 CHANGE OF NAME AND CAPITAL CONSOLIDATION Kantra Copper Limited (formerly Hillgrove Resources Limited, Kantra or Company) advises resolutions relating to the Company’s name change and capital consolidation were approved by shareholders at the General Meeting held on 17 August 2026. The change of Company name process has now been completed, and the Australian Securities and Investments Commission (ASIC) has recorded the change of Company name effective from 17 August 2026. The Company advises that the effective date with ASX for the change of Company name and ASX Code (ASX:KAN) will be following the completion of the capital consolidation. Until that time the Company will be trading under its existing ASX Code (ASX:HGO). The capital consolidation is expected to be completed by the end of August, with the change of name and ASX Code to take effect with ASX in early September. Over the next 24–48 hours, the Company will transition its digital assets, including website domain and email addresses, to kantra.com. Existing hillgrove.com.au email and website addresses will remain active and automatically redirect for a period of 12 months to support continuity. During this transition, minor service disruptions may occur, and the Company appreciates your patience while these updates are completed. Authorised for release by the Board of Kantra Copper Limited. Engage with this announcement at the Kantra Copper Investor Hub. For more information contact: Mr Bob Fulker Mr Luke Anderson Chief Executive Officer & Managing Director Chief Financial Officer & Joint Company Secretary Tel: +61 (0)8 7070 1698 Tel: +61 (0)8 7070 1698 Ms Jane Brunton Head of Investor Relations & Growth Tel: +61 (0)8 7070 1698 2 of 2 Forward Looking Statement This Report contains or may contain certain forward-looking statements and comments about future events, that are based on Kantra's beliefs, assumptions and expectations and on information currently available to management as at the date of this presentation. Often, but not always, forward-looking statements can generally be identified by the use of forward-looking words such as "may", "will", "expect", "plan", "believes", "estimate", "anticipate", "outlook", and "guidance", or similar expressions, and may include, without limitation, statements regarding plans, strategies and objectives of management, anticipated production and production potential, financial forecasts, product quality estimates of future Mineral Resources and Ore Reserves. Such statements are only expectations or beliefs and are subject to inherent risks and uncertainties which could cause actual values, results or performance achievements to differ materially from those expressed or implied in this announcement. Where Kantra expresses or implies an expectation or belief as to future events or results, such expectation or belief is expressed in good faith and on a reasonable basis. No representation or warranty, express or implied, is made by Kantra that the matters stated in this presentation will in fact be achieved or prove to be correct. Except as required by law, Kantra undertakes no obligation to provide any additional or updated information or update any forward-looking statements whether on a result of new information, future events, results or otherwise. Readers are cautioned against placing undue reliance on forward- looking statements. These forward-looking statements are not guarantees of future performance and involve known and unknown risks, uncertainties, assumptions and other important factors, many of which are beyond the control of Kantra, the directors, and management of Kantra. These factors include, but are not limited to difficulties in forecasting expected production quantities, the potential that any of Kantra's projects may experience technical, geological, metallurgical and mechanical problems, changes in market prices and other risks not anticipated by Kantra, changes in exchange rate assumptions, changes in product pricing assumptions, major changes in mine plans and/or resources, changes in equipment life or capability, emergence of previously underestimated technical challenges, increasedcosts, and demand for production inputs.