Announcement PDF 26 August 2025 COPPER TO THE WORLD PRESENTATION Hillgrove Resources Ltd (the “Company” or “Hillgrove”) is pleased to enclose a copy of the Investor Presentation to be delivered by Bob Fulker (CEO and Managing Director) at the Copper to the World Conference in Adelaide on Tuesday, 26 August 2025. 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 Luke Anderson Chief Financial Officer Tel: +61 (0)8 7070 1698 1 of 1 Presentation Copper To The World Conference Presentation 26 August 2025 Bob Fulker Managing Director Important Notice and Disclaimer Disclaimer To the maximum extent permitted by law, neither Hillgrove nor its related corporations, directors, officers, employees or agents, nor any other person, accepts any liability, including, without limitation, any liability arising from fault or negligence, for any loss arising from the use of this presentation or its contents or otherwise arising in connection with it. Hillgrove is under no obligation to release any updates or revisions to this presentation to reflect any change in expectation or assumptions and disclaim all responsibility and liability for these forward-looking statements (including, without limitation, liability for fraud or negligence). Nothing contained in this Document constitutes investment, legal, tax or other advice. The information in this Document does not take into account the investment objectives, financial situation or particular needs of any recipient. Before making an investment decision, each recipient of this Document should make its own assessment and take independent professional advice in relation to this Document and any action taken on the basis of this Document. All currency referred to is Australian dollars ($) unless otherwise indicated (e.g. US$). Forward Looking Statement This release contains or may contain certain forward-looking statements and comments about future events, that are based on Hillgrove'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 Hillgrove 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 Hillgrove that the matters stated in this presentation will in fact be achieved or prove to be correct. Except as required by law, Hillgrove 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 Hillgrove, the directors, and management of Hillgrove. These factors include, but are not limited to difficulties in forecasting expected production quantities, the potential that any of Hillgrove's projects may experience technical, geological, metallurgical and mechanical problems, changes in market prices and other risks not anticipated by Hillgrove, 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, increased costs, and demand for production inputs. Competent Persons Statement As an Australian company with securities listed on the Australian Securities Exchange (ASX), Hillgrove is subject to Australian disclosure requirements and standards, including the requirements of the Corporations Act and the ASX. Investors should note that it is a requirement of the ASX listing rules that the reporting of ore reserves and mineral resources in Australia comply with the 2012 edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code). The information in this report that relates to the 2024 Kanmantoo Mineral Resource Estimate and the 2024 Ore Reserve is extracted from ASX release titled ‘Maiden Kanmantoo Underground Ore Reserve and 96% Increase in Copper Mineral Resource Endowment’ dated 18 October 2024 and is available to view at www.hillgroveresources.com.au. The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and that all material assumptions and technical parameters underpinning the Mineral Resource Estimate and Ore Reserve in the relevant market announcement continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person's findings are presented have not been materially modified from the original market announcements. The information in this report that relates to the 2022 Mineral Resource Estimate for Nugent and Kavanagh was extracted from the ASX release titled Updated Nugent Underground Mineral Resource Estimate on the 26 July 2022 and is available to view at www.hillgroveresources.com.au. The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and that all material assumptions and technical parameters underpinning the Mineral Resource Estimate in the relevant market announcement continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person's findings are presented have not been materially modified from the original market announcements. The information in this report that relates to planned drilling opportunities was extracted from the ASX release titled ‘2025 Kanmantoo Exploration Target Update’ dated 13 Feb 2025 and is available to view at www.hillgroveresources.com.au. The company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and that all material assumptions and technical parameters underpinning the information in the relevant market announcement continue to apply and have not materially changed. The company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement. 2 Corporate Snapshot Proud South Australian copper producer Market Statistics Share price1 Major Shareholders Shares on issue Market capitalisation Debt Cash2 Enterprise value $0.036 2,611M $94M Nil $11M $83M Income Tax Losses3 Franking Credits $282M $18M       Freepoint Metals & Concentrates 18.9% Ariadne Australia 10.3% Board & Management Derek Carter Bob Fulker Murray Boyte Roger Higgins Luke Anderson Chairman CEO & MD Non-Exec. Director Non-Exec. Director CFO & Co. Sec. Hillgrove owns the Kanmantoo Copper Gold Mine Tier 1 jurisdiction of South Australia Located 55km from Adelaide Historical production (2010 – 2020): 137kt copper and 55k gold Commenced production from underground in 2024 Multiple opportunities to increase resource base, production rates and mine life Note: Currency is in Australian dollars unless otherwise stated 1. Closing share price on 19 August 2025 2. Cash balance at 30 June 2025 3. Carried forward as of 31 December 2024 3 Shaping the future of Australian copper in a tier 1 jurisdiction Building Australia’s Copper Future Generating cash flow today, not just future potential Cash-Generating Copper Producer Multiple rerating catalysts driving the next growth phase Metrics Support Market Re-Rate Building to scale, a platform for multiple operations Growth, Organic and Beyond 4 4 Building The Future of Copper Hillgrove poised to ride the copper trend LME Copper Price & Inventory2 Price (US$/t) $12,000/t Inventory (t) 600kt $10,000/t 500kt $8,000/t 400kt $6,000/t 300kt $4,000/t 200kt $2,000/t 100kt Jul-15 Jul-16 Jul-17 Jul-18 Jul-19 Jul-20 Age of Operating Copper Mines1 0-20 yrs 21-30 yrs 49% 12% 31-40 yrs 41-50 yrs 14% Jul-22 Jul-23 Jul-24 Jul-25 Mined Head Grade (% Copper)1 1.20 19% 6% Jul-21 50+ yrs 1.00 0.80 Increasing Global Copper Demand  Electrification;  Decarbonistion; and  Urbanisation. Supply Gap  Continued reductions in global grades;  Underinvestment in new copper mines; and  Global geopolitical tensions. Forecast 0.60 0.40 “Soaring demand for copper will require $250 billion of investment over the next decade, helping to drive further mergers in the industry” “Demand for copper, a key element in the energy transition, is set to rise by 70% to 100% by 2050” Mike Henry Bloomberg TV interview, November 2024 1. As at 2023, mines > 15ktpa copper. Source: BHP. 2. LME for pricing and https://www.westmetall.com/en/markdaten.php?action=diagram&field=LME_Cu_cash for inventory 5 Delivering & Growing the Business Building blocks to consistent positive cash flow Current Status Foundations Built Maintain 1.4Mtpa run rate Optimise mine grade to achieve a consistent mill feed grade Balance mine development rates with stope extraction to minimise disruption and interactions Further reduction in real costs resulting in further reduction of mining and processing unit rates CY25 Guidance: - 12-14kt Cu - US$3.40-3.90/lb All-In Cost 2H 2025 Nugent Development Accelerating development of Nugent to achieve 1.7-1.8Mtpa run rate in 2026 Early break through of the Nugent Decline Continue the Resource extensional drilling for an updated MROR in Q4 2025 Utilising installed capacity and equipment reducing unit rates Nugent development aiming to: - Step-up Cu production - Reduce mining + processing unit costs by ~15-20% Growth Beyond Nugent Initial Diamond Drilling focus on Nugent and Kavanagh Central resource extensions Drilling to target depth extensions of the Valentine, Emily Star and Critchley mineralisation North Kavanagh depth extension to be further tested Significant scope to expand mining inventory to: - Further utilise 3.6Mtpa plant capacity; and/or - Increase mine life 6 Organic Growth - Exploration Multiple opportunities to increase our Resource and Reserve Kanmantoo 2024 Mineral Resources2,3: 19.3Mt grading 0.77% Cu and 0.14g/t Au containing 150kt Cu and 82koz Au. Compared to 2022 MRE3 this represents a:  96% increase in contained copper  138% increase in contained gold  Kanmantoo 2024 Maiden Ore Reserve2: 2.8Mt grading 0.91% Cu and 0.15g/t Au containing 26kt Cu and 14koz Au  ~20 Km of drilling planned in 2025 targeting resource expansion1 • Early focus on: • Valentines • Kavanagh • Nugent Additional on lease targets to be evaluated as underground development expands 1. Refer to ASX announcement on 13 Feb 2025 titled ‘2025 Kanmantoo Exploration Target Update 2. Refer to ASX release on 18 October 2024 titled “Maiden Kanmantoo underground Ore Reserve and 96% increase in copper Mineral Resource endowment” 3. Refer to ASX release on 26 July 2022 titled “Updated Nugent Underground Mineral Resource Estimate ” 7 The Hillgrove Opportunity Existing copper producer with an EV less than $100 million Hillgrove Highlights  Established copper producer with multiple organic growth pathways  Generating cash flow from a proven asset  Growth ready platform - organic and inorganic opportunities in play  Experienced team delivering on a high-quality copper project  Well positioned to capitalise - strengthening global copper thematic Key Catalysts For Life Extensions  On track to deliver 2025 guidance  Breakthrough at Nugent, unlocking potential  Throughput Expansion delivering scale and efficiency  Resource & Reserve release in Q4, enhancing project life & value Long term copper producer contributing to the SA economic prosperity 8 Thank You Kanmantoo Mineral Resource Mine Area Kavanagh (including Spitfire) North Kavanagh Nugent Emily Star TOTAL Tonnage (kt) Cu (%) Au (g/t) Ag (g/t) Bi (ppm) Cu Metal (kt) Au Metal Measured 3,200 0.94 0.04 2.9 190 30 4 Indicated 3,400 0.77 0.10 2.4 97 26 11 Inferred 6,300 0.70 0.11 2.4 110 44 22 Sub-Total 13,000 0.78 0.09 2.5 130 100 37 Measured - - - - - - - Indicated 230 0.78 0.17 3.0 140 2 1 Inferred 110 0.77 0.21 3.3 130 1 1 Sub-Total 340 0.78 0.18 3.1 140 3 2 Measured - - - - - - - Indicated 2,300 0.74 0.36 1.7 66 17 26 Inferred 1,100 0.71 0.35 1.6 40 8 13 Sub-Total 3,400 0.73 0.36 1.6 57 25 39 Measured - - - - - - - Indicated - - - - - - - Inferred 2,600 0.77 0.08 1.6 110 20 7 Sub-Total 2,600 0.77 0.08 1.6 110 20 7 19,300 0.77 0.14 2.2 110 150 82 JORC Classification (koz) Notes: 1. Due to effects of rounding, total numbers may not sum. 2. Tonnage and metal are rounded to the nearest 1,000 tonnes, grades are rounded to 2 significant figures. 3. Mineral Resource is Reported at a 0.4% Cu Cut Off Grade for all Mine Areas. 4. Mineral Resource is depleted for mining as at 30 June 2024. 5. Mine depletion refers to current Kavanagh UG operation, and historical Giant Pit, Nugent and Emily Star open pits The information is extracted from the report entitled ‘Maiden Kanmantoo Underground Ore Reserve and 96% Increase in Copper Mineral Resource Endowment’ released on 18 October 2024 and is available to view on the Hillgrove Website https://www.hillgroveresources.com.au/announcements. The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement. 10 Kanmantoo Ore Reserve Mine Area Kavanagh Nugent Total Ore Reserve (Kavanagh + Nugent) Tonnes (kt) Cu (%) Au (ppm) Ag (ppm) Bi (ppm) Cu Metal (kt) Au Metal (koz) Proved 1,100 1.01 0.04 2.82 220 12 1 Probable 1,000 0.88 0.15 2.7 140 9 5 Proved + Probable Kavanagh Total 2,100 0.95 0.09 2.76 180 21 6 Proved - - - - - - - Probable 670 0.76 0.33 1.44 79 5 7 Proved + Probable Nugent Total 670 0.76 0.33 1.44 79 5 7 Proved 1,200 1.01 0.04 2.82 220 12 1 Probable 1,700 0.83 0.22 2.21 110 14 12 Proved + Probable 2,800 0.91 0.15 2.45 160 26 14 JORC Classification Notes: 1. Dry metric tonnes. 2. 0.6% Copper (Cu) design cut-off grade. 3. No Probable Ore Reserve was derived from Measured Mineral Resource. 4. Minimum stope mining width 5.0m apparent. 5. Grades are rounded to two decimal places. Tonnages are rounded to two significant figures. 6. Any minor apparent discrepancies for sums in the table are related to rounding. 7. The period for economic extraction is from Sept 2024 until April 2027. 8. Ore Reserve converted from Mineral Resource is based on the October 2024 Mineral Resource report by Caitlin Rowett (Hillgrove Resources Limited) and Sonia Konopa (ERM) titled “Kavanagh, Nugent & North Kavanagh Underground Mineral Resource Estimate", as at 30th September 2024. 9. Competent Person: Tom Bailey MAusIMM (#206304). 10. Mining has commenced and observed ground conditions have been very good. Further geotechnical investigation is required to increase confidence in the stable mining spans. The information is extracted from the report entitled ‘Maiden Kanmantoo Underground Ore Reserve and 96% Increase in Copper Mineral Resource Endowment’ released on 18 October 2024 and is available to view on the Hillgrove Website https://www.hillgroveresources.com.au/announcements. The Company confirms that it is not aware of any new information or data that materially affects the information included in the original market announcement and that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from the original market announcement. . 11