ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 1 A S X A N N O U N C E M E N T 29 MAY 2026 INFILL DRILLING COMMENCES AT COMSTOCK ST ARNAUD – COMSTOCK INFILL DRILLING COMMENCES • The St Arnaud Comstock Project has near-term production potential as a previously mined pit and Maiden JORC Resource reported in 20251 . As announced last December, studies are underway to test the economics and support possible first production. As part of this work, infill diamond drilling has now commenced on the Walkers pit area at Comstock. • Historical high grade drilling highlights Comstock’s shallow ore potential at Walkers. Historical high grade drill intercepts in the Walkers pit include a 100.8g/m intercept (14m @ 7.2g/t Au from 18m; SRC64 1985) and a 60.3g/m intercept (2.2m @ 27.4g/t Au from 63.2m, STAD36 1998)2 . High grade potential is also demonstrated with a recent grab sample taken in April returning assay of 6.04g/t gold3 . • The objective of the infill drilling campaign is to increase JORC Resource confidence levels. This 6-week diamond drill program for approximately 1,000 metres consists of 6 short holes of average depth under 100 metres. The program has the dual objective of 1) validating the data from historical drilling results, and 2) increase drill data density to, if successful, support a higher confidence level for sections of the 100% Inferred JORC Resource. In turn, a higher classification JORC Resource may provide reasonable grounds to support production targets and expected economic outcomes in Scoping studies to support possible development. 1 ASX Release, 13 Jun 2025: St Arnaud Maiden JORC MRE and Exploration Target. Historical results are also re-published with JORC Tables in this release. 2 Refer results Table 1 within this release 3 Refer results Table 2 within this release. 4 ASX release – St Arnaud Comstock – High grade assays – 20 Nov 2025 5 ASX release, 25 Feb 26: Newly Identified High Grade Silver Component to St Arnaud Management Comment It is pleasing to see an exciting infill program now underway at Comstock where we reported multiple instances of visible and high-grade gold in 2025 particularly hole #2 with 1m @ 65.37g/t gold from 116m that included 0.3m @ 109g/t and 0.4m @ 65.4g/t4 , plus more recently encouraging silver assays of up to 650g/t5 . As we pursue the ambition of possible first portfolio production from Comstock, we look forward to seeing the outcomes of the Concept and Scoping Studies underway. - James Gurry, Managing Director ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 2 29 MAY 2026 Figure 1 – View of the high-accuracy LiDAR and photogrammetry of the Comstock open-cut pit – looking towards the South (azimuth 18). Red circle highlights drill target area for the 6-week infill diamond drilling program now underway. 6 ASX Release, 13 Jun 2025: St Arnaud Maiden JORC MRE and Exploration Target - Amended Management Comment The legacy drilling programs completed at Comstock returned some remarkable consistently high-grade gold assays. Infill and reaffirmation drilling is currently in progress targeting near pit surface mineralisation immediately beneath the Walkers sub-pit floor, and assuming success, presents a unique opportunity for Aureka to potentially reinvigorate the Comstock project via small scale production along the Walkes structure, which is characterised by auriferous sheared quartz reefs and zones of stockwork quartz veining that have historically delivered mineable ore tonnes and multiple significant high grade drilling intercepts. Key apparent controlling structures within the Walkers sub-pit have been mapped and extrapolated. The first three holes of the current drilling program have successfully intersected the key structures at the projected depths, thereby confirming structural continuity below the sub-pit floor. In addition to the drilling program, grab sampling within the pit has identified additional mineralised structures along the walls of the Walkers pit returning assays up to 6.04g/t gold, further demonstrating the ongoing discovery potential and that still remains at Comstock and the possibility to add further gold ounces to the current 56Koz mineral resource defined to date6 . - Jozef Story, Exploration Manager ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 3 29 MAY 2026 Figure 2 – Plan View of the Walkers sub-pit and the Walkes main Shear with legacy drill intercepts projected to pit floor surface. Historical legacy drilling has been re-published with JORC Tables in this release refer Appendix A&B. ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 4 29 MAY 2026 AUREKA’S INTEGRATED ASSET PORTFOLIO STRATEGY Aureka Limited is a Victorian gold company with a complementary set of gold assets. The flagship Irvine Project in the Stawell Corridor has an inferred JORC Resource of 304koz, is subject to continuous diamond drilling and is located only 16km from the operating 5.3Moz Stawell Gold Mine. While Aureka continues to advance this potential large greenfield project, to the north-east lies the St Arnaud Comstock Project, identified as a near term production opportunity due to its existing JORC Resource of 56koz grading 1.21g/t gold7 (100% inferred ) located in a previously mined open pit (last mining 1995) and is proximal to gold processing mills with spare capacity. Aureka’s extensive tenement package also includes the Jubilee Gold Exploration Project near Ballarat, Morning Bill Gold and Base Metals Project on Stavely Volcanics, and critical mineral potential in the greater St Arnaud tenement package. INFILL DRILLING NOW UNDERWAY AT COMSTOCK Diamond Drilling within the Walkers pit at the Comstock Gold Project has now commenced. The objective of this drilling is to target continuity beneath Walkers pit and confirmation of historical drill hole data. Successful drilling and assays would, assuming acceptable assay results, upgrade the JORC Resource to higher classification to underpin production target statement and financial forecasts for the first production stage at Comstock. Figure 3 & 3a: Diamond Drilling within the Walkers pit at the Comstock Gold Project. Picture taken 21 May 2025 and shows rig targeting shallow depth drilling on the Walkers stockwork vein area. RHS shows historical drill hole within the Walkers pit at Comstock where drilling is now underway to replicate a portion of these historic holes to validate the initial findings of the Concept Study and assuming acceptable assay results, upgrade the JORC Resource to higher classification to underpin production target statement and financial forecasts for the first production stage at Comstock. 7 ASX Release, 13 Jun 2025: St Arnaud Maiden JORC MRE and Exploration Target - Amended Fig 3 Fig 3a ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 5 29 MAY 2026 INFILL PROGRAM FOLLOWS 2025’S SUCCESSFUL DRILLING CAMPAIGN Aureka’s St Arnaud Comstock lies within the greater St Arnaud area that historically produced 400koz at an estimated 15g/t8 . In June 2025 AKA released a maiden JORC Mineral Resource Estimate (MRE) of 1.45M tonnes at 1.21g/t Au for 56,500 oz gold (Table 2) and additionally, an exploration target around the inferred resource has been estimated to range between 3.0Mt and 3.5Mt, at grades 1.2g/t to 1.0g/t resulting in an exploration target range estimate of 112koz to 116koz of gold and potentially economic amounts of silver at a grades of 1.9g/t to 2.02g/t Ag for total of 195koz to 214koz silver (Table 2). Subsequent to the JORC Resource publication, Aureka conducted a diamond drilling program consisting of 2,253m and 7 holes, with highlight assays including: • 25NED0029 with standout results: 1m @ 65.37g/t gold (Au) from a shallow 116.2m ○ including 0.3m @ 109g/t and 0.4m @ 65.4g/t, • 25NED00110 with standout intercept 6.9m @ 4.24g/t Au from 422m ○ incl. 0.75m @ 18.6 g/t Au from 422.1m and 0.6m @ 19.9g/t Au from 435.9m, 0.75m @ 18.6 g/t Au from 422.1m and 3.2m @ 4.71g/t Au from 434.0m ○ (incl. 0.6m @ 19.9g/t Au from 435.9m), • Diamond hole 25NED004 intercepted significant zones of both gold and silver mineralisation, including the highest-grade silver hit on the project to date: ○ 0.3m @ 650g/t silver and 1.91g/t gold from 192m11 , • Visible gold mineralisation intercepted within hole 25NED00712 with the associated assays returning: ○ 0.3m @ 31.5g/t Au from 127.5m. Historical drill intercepts being re-tested through this current diamond drilling program include: • 100.9g/m - 14m @ 7.2g/t Au from 18m13 (SRC64 drilled by GenGold in 1984-85), and • 60.2g/m - 2.2m @ 27.4g/t Au from 63.2m (STAD36 drilled in 1988) • 53.4g/m – 3.1m @ 17.24g/t Au from 22.5m (STAD37 drilled in 1988) • 22.6g/m – 2.0m @ 11.30g/t Au from 68m (SRC65 drilled in 1985) 14 . A recent grab sample taken in April returned a grade of 6.04g/t gold. The sample was collected from a continuous structure propagating along the western wall of the Walkers pit and represents a new target yet to be drill tested. 8 St Arnaud historical production taken from: Krokowski de Vickerod, J., Moore, D.H. and Cayley, R.A., 1997 9 ASX release: 20 Nov 2025: St Arnaud Comstock – High grade assays 10 ASX release, 24 Jul 25: Multiple high-grade gold intercepts at St Arnaud Comstock 11 ASX release, 25 Feb 26: Newly Identified High Grade Silver Component to St Arnaud 12 ASX Release, 22 Dec 2025: St Arnaud Comstock – Shallow Visible Gold in New Structure 13 ASX Release, 13 Jun 2025: St Arnaud Maiden JORC MRE and Exploration Target 14 Refer results Table 1 within this release ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 6 29 MAY 2026 A summary of historical drilling is outlined in Appendix B of this release - Table 1 of JORC Code, 2012 Edition. Figure 4 – Comstock plan view maiden resource outline with mineralisation trends and core drill hole traces15 & 16 located within EL006819. Red/yellow star indicates location of high-grade visible gold within 25NED00717; Blue/Black star indicates location of high-grade silver within 25NED004.18 . Red circle indicates area of Walkers Pit where infill drilling is now underway. 15 ASX Release, 21 January 2022: Maiden Diamond Drilling on St Arnaud’s Nelson Line Intersects Broad Gold and Silver Mineralisation 16 ASX Release, 20 November 2025: St Arnaud Comstock - High Grade Assays 17 ASX Release 22 December 2025: St Arnaud Comstock Mineralisation Intersected 18 ASX Release 25 February 2026 : Newly Identified High Grade Silver Component to St Arnaud ASX : AKA B R I N G I N G V I C T O R I A ' S G O L D T O L I F E 7 29 MAY 2026 Figure 5 – Comstock Long section with significant mineral intercepts. Green callout19 , Brown callout20 & 21 Red circle indicates area of Walkers Pit where diamond drilling has now commenced. 19 ASX Release, 25 Feb 2026: Newly Identified High Grade Silver Component to St Arnaud 20 ASX Release, 22 Dec 2025: Shallow Visible Gold in New Structure 21 ASX Release, 13 Jun 2025: St Arnaud Maiden JORC MRE and Exploration Target – Amended 29 MAY 2026 THE ST ARNAUD COMSTOCK PROJECT OVERVIEW The St Arnaud Comstock pit is a previous mine site (last production 1995) and lies within the greater St Arnaud gold fields that historically produced 400koz at an estimated 15g/t Au22 . Comstock is along the Nelson line of reef and is situated approximately 2 kilometres north of the township of St Arnaud. Geology The Comstock prospect sits on the eastern margin of the Stawell Geological zone of the Lachlan Orogen within the Saint Arnaud Group metasediments, which are unfossiliferous, quartz rich turbidites assumed to be Cambro-Ordovician in age. Locally, the geology of the Comstock project consists of a package of tightly folded turbidites with distinct shale and sandstone layers of varying thicknesses. The area is dominated by a NNW trending, west dipping fault/shear zone known as the Comstock Shear. The shear zone is interpreted to lie within the hinge zone of a large-scale syncline and is confined by a wide, shale dominant zone of sediments. Shale directly adjacent to the shear zone tends to be highly carbonaceous and very dark grey to black in colour. Course euhedral pyrite crystals seem to be syngenetic to this carbon rich zone of fine sediments, quartz veining is associated with gold mineralisation and is massive to stylolitic in texture. There appears to be an apparent association with green-black carbonaceous shales and higher gold grades. Primary gold mineralisation at St Arnaud is hosted within quartz veins which are structurally controlled within very complex structural domains associated with folding and NNW trending, west dipping thrust faults. Gold mineralisation is hosted by quartz reef systems within brittle fractures and faults and can extend from a few metres long to a few kilometres along strike but usually a few hundred metres. These NNW trending reefs have steep plunging gold shoots. The mineralisation has a base metal signature of Au + As + Ag + Pb. In historical records, the gold ore was characterised by a relatively high sulphide content up to 5% pyrite, chalcopyrite, arsenopyrite, galena and silver. Most of the mines stopped at the oxide-sulphide interface due to reduced grade and poor recoveries from sulphide ores. Proximity to Infrastructure St Arnaud Gold Project and the Comstock pit lie within trucking distance to a number of gold processing plants in Victoria. With the current strong gold price environment Aureka intends to begin community, scoping and regulatory approval work to plan for a productive future at Comstock and the St Arnaud gold field. On 8 December 2025, Aureka announced it has engaged mill owners and small-scale Victorian gold production specialists, Core Prospecting Pty Ltd, to assist with the advancement of the St Arnaud Comstock Project and significantly de-risk Aureka's potential pathway to first production23 . 22 St Arnaud historical production taken from: Krokowski de Vickerod, J., Moore, D.H. and Cayley, R.A., 1997 23 ASX Release, 08 December 2025: Core Prospecting St Arnaud Engagement 29 MAY 2026 Cautionary Statement There is a low level of geological confidence associated with inferred mineral resources and there is no certainty that further exploration work will result in the determination of indicated mineral resources or that the production target itself will be realised. Mineral Resource Estimates at Comstock Gold Project Table 1 – Comstock Project Mineral Resource Estimate in accordance with the 2012 edition of JORC Code24 . The preceding statements of Mineral Resources conforms to the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code) 2012 Edition. All tonnages reported are dry metric tonnes. Minor discrepancies may occur due to rounding to appropriate significant figures. The potential quantity and grade of the Exploration Target set out in Table 2 of this release are conceptual in nature and was reported in 2025 (St Arnaud). There has been insufficient exploration to estimate a mineral Resource, and it is uncertain if further exploration will result in the estimation of a Mineral Resource. The Exploration Target has been prepared and reported in accordance with the 2012 edition of JORC Code. Table 2 – Comstock Project estimated Exploration Target in accordance with the 2012 edition of JORC Code25 . Prospect Exploration Target* Range Tonnes (Mt) Gold Grade (g/t) Gold ounces (k Oz) Silver Grade (g/t) Silver ounces (k Oz) Comstock (St Arnaud) Lower 3.0 1.2 116 2.02 195 Upper 3.5 1.0 112 1.90 214 *The potential quantity and grade of the Exploration Target is conceptual in nature and there has been insufficient exploration to estimate a Mineral Resource in relation to this Exploration Target. It is uncertain if further exploration will result in the estimation of a Mineral Resource in relation to these Exploration Targets. 24 ASX Release, 13 June 2025: St Arnaud Maiden JORC MRE and Exploration Target – Amended 25 ASX Release, 13 June 2025: St Arnaud Maiden JORC MRE and Exploration Target – Amended Prospect Cut-Off Gold (g/t) Inferred Tonnes Gold Grade (g/t) Gold Ounces Grade (g/t) silver Silver (oz) Comstock (St Arnaud) >0.5 1,450,000 1.21 56,500 2.14 100,00 29 MAY 2026 Figure 6 – View of the high-accuracy LiDAR and photogrammetry of the Comstock open-cut pit – looking towards the South (azimuth 18). Red circle highlights current drill target area for infill diamond drilling now underway. Lode Attributes of the 3 sections identified in the overall Comstock Historic Pit Attribute Comstock Shear/Lode Walker Lode/ Vein Walker Shear Data Mean grade of intersections >=0.5 g/t gold 1.18 g/t (incl. internal waste) 1.04 g/t (incl. internal waste) 1.26 g/t (incl. internal waste) Average apparent thickness (1 m minimum length) 2m – 3m 1.5m-2m 2m-3.5m Rock Type Association Turbidite- Shale-Siltstone assemblage Turbidite - Shale-Siltstone assemblage Turbidite - Shale- Siltstone assemblage Strike Extrapolation 300m NW @ 336o 200m SE @ 156o 200m SE @ 156o 50m SE@ 180o Dip Extrapolation 200m @ -78 o from 0 RL 200m @ -78 o from 0 RL 100m @ -90 o from 0 RL Probability of positive intersection 64% 50% 34% *Notes: The potential quantity and grade of the gold mineralisation at the wider Comstock project is conceptual in nature, there has been insufficient exploration to estimate a Mineral Reserve, and it is uncertain if further exploration will confirm the target ranges. Refer: ASX Release, 13 June 2025: St Arnaud Maiden JORC MRE and Exploration Target. 29 MAY 2026 Figure 7 – St Arnaud Comstock Project relative location to a number of gold processing mills in Victoria including Wedderburn within the 50km range. On 8th December 2025, Aureka announced it has engaged mill owners and small-scale Victorian gold production specialists, Core Prospecting, to assist with the advancement of the St Arnaud Comstock Project. 29 MAY 2026 Figure 8 – High resolution photo of the St Arnaud Comstock pit, looking SE, situated within EL006819. 29 MAY 2026 This announcement has been approved for release by the Board of Directors. For further information, please visit www.aureka.com.au, or contact: Jame Gurry James.Gurry@aureka.com.au Ph: (03) 9692 7222 Aureka uses InvestorHub for enhanced, 2-way, communication with shareholders, providing easy access to Company updates, reports, and announcements. Investors are encouraged to sign up to the InvestorHub distribution list on the Company’s website. Sing up here: https://investorhub.aureka.com.au/ Competent Persons Statements The information in this announcement that relates to exploration results, data quality, geological interpretations, is based on, and fairly represents, information compiled by Jozef Story, a Competent Person who is a Member of the Australian Institute of Geoscientists (MAIG) (#10079). Mr Story has sufficient experience that is relevant to the style of mineralisation and type of deposits under consideration and to the activity currently being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves.” Mr Story consents to the publishing of the information in this presentation in the form and context in which it appears. The Company confirms that it is not aware of any new information or data that materially affects the information included in the relevant announcement and that all material assumptions and technical parameters underpinning the estimates in the relevant announcement and that all material assumptions and technical parameters underpinning the estimates in the relevant ASX announcement continue to apply and have not materially changed. The information in this announcement that relates to Mineral Resources and Ore Reserves statements and Exploration Target potential statements is based on, and fairly represents, information compiled by Mr. Daniel Brost BSc (Economic Geology) - MSc (Mine Engineering). Mr. Brost is not employed by Aureka Limited and has acted as an independent consultant on the Comstock Prospect Mineral Resource estimation. Mr. Brost is a Chartered Professional Geology and a Member of the Australasian Institute of Geologists (#221836) and has sufficient experience with the style of mineralisation, the deposit type under consideration and to the activities undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (The JORC Code). Mr. Brost consents to the inclusion in this report of the contained technical information relating the Mineral Resource Estimation in the form and context in which it appears. 29 MAY 2026 APPENDIX A Table 1 – Summary of key assays returned from legacy Comstock drilling program Hole ID Easting (MGA) Northing (MGA) RL (AHD) Azimuth (MGA)o Dipo Dep th (m) Sample ID From To Interval (m) Grade (g/t) Au Comment SRC22 701123 5947762 249.5 63 -60 66 SRC22_52 52 54 2.0 17.1 4.0m @ 8.97g/t Au SRC22_54 54 56 2.0 0.84 SRC58 701089 5947763 250.9 64 -60 64 SRC58_18 18 20 2.0 1.11 14m @ 1.97g/t Au SRC58_20 20 22 2.0 3.02 SRC58_22 22 24 2.0 0.97 SRC58_28 28 30 2.0 0.98 SRC58_30 30 32 2.0 1.17 SRC58_32 32 34 2.0 0.48 SRC58_34 34 36 2.0 6.08 SRC60 701114 5947757 250.2 66 -60 60 SRC60_24 24 26 2.0 4.75 4m @ 2.67g/t Au SRC60_26 26 28 2.0 0.58 SRC60_46 46 48 2.0 13.4 10m @ 3.25g/t Au SRC60_48 48 50 2.0 1.43 SRC60_50 50 52 2.0 0.59 SRC60_52 52 54 2.0 0.31 SRC60_54 54 56 2.0 0.54 SRC64 701153 5947736 247.5 63 -60 60 SRC64_18 18 20 2.0 0.63 14m @7.21g/t Au SRC64_20 20 22 2.0 0.58 SRC64_22 22 24 2.0 38.5 SRC64_24 24 26 2.0 8.12 SRC64_26 26 28 2.0 1.17 SRC64_28 28 30 2.0 0.82 SRC64_30 30 32 2.0 0.63 SRC64_42 42 44 2.0 0.58 10m @ 1.1g/t Au SRC64_44 44 46 2.0 0.75 SRC64_46 46 48 2.0 0.23 SRC64_48 48 50 2.0 0.2 SRC64_50 50 52 2.0 3.56 SRC65 701134 5947730 248.8 71 -60 70 SRC65_68 68 70 2.0 11.3 2m @11.3g/t Au STAD36 701107 5947752 250.4 63 -60 110 STAD36_63.2 63.2 64.4 1.2 25.2 2.2m @27.38g/t Au STAD36_64.4 64.4 65.4 1.0 30 STAD36_68.1 68.1 69.1 1.0 12.4 1.0 m @12.4g/t Au STAD37 701126 5947762 249.3 63 -60 80 STAD37_22.5 22.5 22.8 0.3 2.03 3.1m @ 17.24g/t Au Incl 1.8 @ 29.2g/t Au STAD37_22.8 22.8 23.8 1.0 0.22 STAD37_23.8 23.8 24.8 1.0 1.4 STAD37_24.8 24.8 25.6 0.8 64 29 MAY 2026 W09 701084 5947784 251.1 63 -60 40 W09_37 37 38 1.0 8.33 3.0m @ 6.21g/t Au W09_38 38 39 1.0 9.47 W09_39 39 40 1.0 0.82 Table 2 – Summary of key assays returned from grab sampling Sample ID Easting (MGA) Northing (MGA) RL (AHD) Grade (g/t) Au Comment AKA003767 701137 5947726 239.7 6.04 Pit wall sample collected from within sheared laminated quartz veining propagating the western pit wall of the Walkers sub-pit to the main Comstock Pit 29 MAY 2026 APPENDIX B St Arnaud: Comstock Gold Project JORC Code, 2012 Edition - Table 1 Section 1 Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling techniques • Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc.). These examples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. • In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases, more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information. Air Core & Reverse Circulation Drilling • All air-core (AC) drill holes have been routinely sampled at 1m intervals downhole directly from a rig mounted cyclone. Each metre is collected and placed on a plastic sheet on the ground and preserved for assay sub-sampling analysis as required. For RC, each metre of sampling is collected in individual sequentially numbered plastic bags and preserved. • Sub-samples for assaying are generated from the 1m preserved samples and have been prepared at the drill site by either a spear sampling method (AC) or riffle split (RC) based on logged geology and mineralisation intervals. Sub- samples have been taken at 1m intervals or as composites ranging from 2-5m intervals ensuring a sample weight of between 2 to 3 kg per sub- sample. • Certified reference material and sample duplicates have been inserted at regular intervals with laboratory sample submissions. Diamond Core Drilling • The diamond drill core samples are selected on geological intervals varying from 0.2m to 1.3m in length. • All drill core is routinely cut in half (usually on the right of the marked orientation line) with a diamond saw and submitted for analysis. Representative sampling is ensured by a combination of Company procedures regarding quality control (QC) and quality assurance/ Testing (QA). Certified standards and blanks are routinely inserted into assay batches. Drilling techniques • Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details Air Core (AC) Drilling • Legacy AC drilling has been carried out using a Wallis Mantis 80 AC rig mounted 29 MAY 2026 (e.g. core diameter, triple or standard tube, depth of diamond tails, face- sampling bit or other type, whether core is oriented and if so, by what method, etc). on a Toyota Landcruiser base. The AC rig used a 3.5” blade bit to refusal, generally just below the fresh rock interface. Reverse Circulation Drilling • Legacy RC drilling has been conducted using a track-mounted drill rig; 400psi 900cfm compressor and booster; auxiliary compressor were dictated by water in-flows. The RC rig used a 4” diameter RC hammer with 110mm button bit to progress the hole to design depth or where groundwater inflows compromise sample quality. Diamond Core Drilling • Legacy diamond drilling was conducted using Deepcore track-mounted LM90 and LF130. • Pre-collars have been drilled to solid bedrock using an HWT (114.3mm) drill bit followed by diamond coring with a diameter of 63.5mm (HQ) • Diamond drilling of HQ3 (triple-tube) is undertaken to ensure maximum core recovery. • Drilling completed by Aureka was conducted by AMWD • Pre-collars were drilled to solid bedrock using an HQ3 drill bit (93mm hole diameter) coring down to solid rock followed by HWT casing diamond (114.3mm hole diameter) • Diamond drilling of HQ3 (triple-tube) was undertaken to ensure maximum core recovery. • Drill core has been orientated with a Reflex ACT III core orientation tool then continuously marked with a line while on an angle iron cradle Drill sample recovery • Method of recording and assessing core and chip sample recoveries and results assessed. • Measures taken to maximise sample recovery and ensure representative nature of the samples. • Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. Air Core & Reverse Circulation Drilling • Legacy AC & RC drill recoveries have been visually estimated as a semi-quantitative range and recorded in the log. • Recoveries are generally high (>90%), with reduced recovery in the initial near-surface sample. • Samples are generally dry, but many became wet at the point of refusal in hard ground below the water table. • Geological control maintained at the drill site at all times to ensure drilling and sampling is to required standard. 29 MAY 2026 • No sampling issue, recovery issue or bias has been picked up and is considered that both sample recovery and quality is adequate for the drilling technique employed. Diamond Core Drilling • All diamond core has been logged capturing any core loss, if present, and recorded in the database. • All drill depths are checked against the depth provided on the core blocks and rod counts are routinely carried out by the driller. Core recovery for the areas sampled is generally good. Logging • Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. • Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. • The total length and percentage of the relevant intersections logged. • Geological logging of samples follows Company and industry common practice. Qualitative logging of samples includes (but is not limited to), lithology, mineralogy, alteration, veining and weathering. • All logging is quantitative, based on visual field estimates. • Most if all AC & RC chips and core were photographed in detail. • For AC & RC, a small representative sample has been retained in a plastic chip tray for future reference and logging checks. • Detailed chip logging, with digital capture, has been conducted for 100% of chips logged by previous geological teams. • Detailed core logging, with digital capture and digital photography, was conducted for 100% of the recent Aureka diamond drilling Sub-sampling techniques and sample preparation • If core, whether cut or sawn and whether quarter, half or all core taken. • If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique. • Quality control procedures adopted for all sub-sampling stages to maximise representivity of sample