Announcement PDF 1 of 2 27 AUGUST 2026 CONSOLIDATION COMPLETE, ASX CODE AND NAME CHANGE UPDATE Kantra Copper Limited (formerly Hillgrove Resources Limited, Kantra or Company) advises that the Consolidation of Capital (Consolidation), as approved by the Company’s shareholders at the General Meeting held on 17 August 2026, is now complete. The Consolidation was on the basis that every 15 fully paid ordinary shares (Shares) be consolidated into one (1) fully paid ordinary share. Options and Performance Rights were consolidated on the same basis, with the exercise price of Options amended in inverse proportion to the Consolidation ratio. The Company’s post-Consolidation capital structure is as follows: Capital Structure Post-consolidation ASX Code Securities on Issue Ordinary Fully Paid Shares HGO 235,955,001 Option Expiring 01-Mar-2027 Ex $1.35 HGOAAA 666,667 Option Expiring 16-May-2028 Ex $0.7875 HGOAAB 1,238,096 Option Expiring 29-Jun-2028 Ex $0.78 HGOAAC 7,751,938 Performance Rights HGOAA 11,454,626 New holding statements, together with a covering letter, a copy of which is enclosed with this announcement, have been despatched to securityholders advising them of their securities held on a post-Consolidation basis. Where the Consolidation resulted in a fraction of a security held, that fractional entitlement has been rounded up to the nearest whole security. Trading on a normal T+2 basis is expected to start from the commencement of trading on Friday, 28 August 2026. The post-Consolidation holdings of Directors will be confirmed in Change of Directors’ Interest Notices (Appendix 3Y) to follow this announcement. Update to ASX Code and Name Change Timing The Company is currently trading on ASX on a deferred-settlement basis under the code HGODB. This will continue until trading commences on Friday, 28 August 2026, at which point the Company will revert to trading under HGO. The Company expects to begin trading under its new ASX code KAN, and name Kantra, from Tuesday, 1 September 2026. 2 of 2 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 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, assumptionsand other important factors, many of which arebeyond 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 orcapability, emergence of previously underestimated technicalchallenges, increased costs, and demand for production inputs. 1 of 1 27 August 2026 Dear Securityholder, Further to the ASX announcement dated 17 August 2026, Kantra Copper Limited (formerly Hillgrove Resources Limited, Kantra or the Company), confirms that the capital consolidation has now been completed. The Company confirms that securities have been consolidated on a fifteen (15) for one (1) basis with any fractional entitlements arising rounded up (Consolidation). Enclosed with this letter is an up-to-date holding statement reflecting the current number of securities you hold on a post-consolidation basis. More information regarding the Consolidation can be found in the Company’s Notice of General Meeting lodged with ASX on 17 July 2026. The Company is currently trading on ASX on a deferred-settlement basis under the code HGODB. This will continue until trading commences on 28 August 2026, at which point the Company will revert to trading under HGO. The Company expects to begin trading under its new ASX code KAN, and name Kantra Copper Limited, from Tuesday, 1 September 2026. Yours sincerely, Kantra Copper Limited Jake van der Hoek Company Secretary