Announcement PDF Level 2, 16 Ord Street, West Perth, WA 6005 | PO Box 1064, West Perth, WA 6872 | +61 8 9386 9534 info@horizonminerals.com.au | ACN 007 761 186 | ABN 88 007 761 186 | horizonminerals.com.au ASX: HRZ ASX ANNOUNCEMENT 13 February 2026 GOLD MINERAL RESOURCES UPDATE Horizon Minerals Limited (ASX: HRZ) (“Horizon” or “the Company”) is pleased to announce an updated mineral resource statement for the Company’s Gold Assets. HIGHLIGHTS • Mineral Resources of 34.32Mt at 1.7 g/t Au for 1.88Moz gold.1 • Underpinned by the large cornerstone Boorara and Burbanks assets. • Changes to the Company’s Gold Mineral Resources include: o Mining depletion at Boorara and Phillips Find. o The review of the reasonable prospects of economic extraction across several deposits, including Kalpini, Crake, Coote, Golden Ridge North, Jacques-Peyes and Gordons Dam. • The Company’s substantial Gold Mineral Resource base, together with ongoing technical studies, underpins a development profile targeting sustained gold production and continuous cashflows. HORIZON GOLD MINERAL RESOURCE ESTIMATE2 Measured Indicated Inferred Total Mt Au (g/t) koz Mt Au (g/t) koz Mt Au (g/t) koz Mt Au (g/t) koz Total 0.95 1.36 41 16.88 1.74 944 16.49 1.68 892 34.32 1.7 1,878 Managing Director and CEO Mr Grant Haywood commented: “The sustained uplift in the gold price has brought previously marginal lower-grade tonnages into the economic envelope. By redefining cut-off grades, we have delivered a meaningful uplift in total resource ounces.” “This positions the Company with a more robust platform for future development, with the increased inventory to be incorporated directly into the Black Swan study planned for release in this current March 2026 quarter.” 1 See Table 15 – “Horizon Gold Mineral Resource Estimate Summary” horizonminerals.com.au Page | 2 Overview Horizon is pleased to provide an updated Gold Mineral Resource Statement for the Company’s projects located near Kalgoorlie-Boulder in the heart of the Western Australian goldfields (Figure 1). Figure 1 – Horizon Gold Projects Depleted Resources Boorara The Boorara Mineral Resource Estimate (MRE) was undertaken in 2021 and reported as “Updated Boorara Mineral Resource Delivers a 34% Increase in Gold Grade” dated 27 April 2021. Mining of the deposit commenced in late 2024 with 605,981 tonnes at 0.93 g/t Au for 18,154 oz of gold production recorded to 30 June 2025. The Mineral Resource Estimate for Boorara was depleted for mining to June 2025 by intersection of the 2021 resource block model (min_210723_dep_final.fbm) with the June 2025 end of month pit shells. A depletion of 889,258 tonnes of ore and waste containing 29,985 oz of gold at a 0.5 g/t Au reporting cutoff was applied. The Boorara MRE now contains 9.79 Mt containing 398 koz of gold (Table 1). The additional depleted ounces compared to production are tied up in mineralised waste. With completion of mining in late 2025, a detailed reconciliation will be undertaken upon collection and compilation of all available data. horizonminerals.com.au Page | 3 Table 1 – Boorara MRE 1/07/2021 – Depleted for Mining to EOM June 2025 – 0.5 g/t Au reporting cutoff Boorara Measured Indicated Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 11 1.14 0.4 139 1.43 6 33 1.06 1 183 1.34 8 Transition 317 1.22 12 1,053 1.22 41 292 1.09 10 1,662 1.20 64 Fresh 424 1.20 16 5,293 1.28 218 2,225 1.28 92 7,942 1.28 326 Grand Total 753 1.21 29 6,485 1.28 266 2,549 1.26 103 9,787 1.27 398 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Phillips Find The Phillips Find MRE was undertaken in June 2022 for Greenstone Resources (GSR). After acquisition of GSR, Horizon reported the Phillips Find mineral resource in the “Group Mineral Resource Statement – Amended” dated 1 August 2024. The Mineral Resource Estimate for Phillips Find was depleted for mining to June 2025 by intersection of the 2022 resource block model (phillipsfind_mre_june_2022.mdl) with the June 2025 end of month pit shells. A depletion of 152,446 tonnes at 1.9 g/t Au for 9,347 oz Au above a cutoff of 0.0 g/t Au was reported. This compares to recorded mine production of 144,397 tonnes at 1.39 g/t Au for 6,441 oz Au. After completion of mining in late 2025, a detailed reconciliation will be undertaken. The Phillips Find remaining open pit mineral resource is 45 koz. The underground MRE remains the same (Table 31). Table 2 – Philips Find MRE June 2022 – Depleted for Mining to EOM June 2025 – 0.5 g/t Au reporting cutoff Phillips Find Indicated Inferred Total kt Material kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 1 1.63 0.06 8 1.41 0.4 9 1.43 0.4 Transition 59 1.89 4 18 1.30 1 77 1.75 4 Fresh 350 2.59 29 162 2.23 12 511 2.47 41 Grand Total 410 2.48 33 188 2.11 13 598 2.36 45 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Updated Resources Over the last three years the price of gold has increased substantially (Figure 2). The consequence of this is more lower grade deposits are becoming economic to mine. Recent work commissioned by Horizon as part of the upcoming Black Swan feasibility study is confirming that projects can be mined at a lower cutoff grade than previously applied. Recommendations from MRE reviews have been to lower the reporting cutoff grades and review the original interpretations with the objective of incorporating lower grade mineralisation in the modelling. The Company has re-reported Mineral Resource Estimates completed between 2021 and 2023 at a revised cutoff grade of 0.5 g/t Au, compared with the previously reported cutoff grade of 0.8 g/t Au. Except for Kalpini, the Company confirms that no new information or data has been identified that materially affects the information included in the original market announcements. All material assumptions and technical parameters underpinning the Mineral Resource Estimates in those announcements continue to apply and have not materially changed for the deposits listed below. horizonminerals.com.au Page | 4 Figure 2 – Historical Gold Price (https://goldprice.org/gold-price-history.html) Crake The Crake MRE was originally reported as “Updated Crake Resource improves in quality” (Crake) 7 September 2021. Re-reporting of the model (crake_mre_august_2021_final.mdl) at a 0.5 g/t Au cutoff increases tonnes by 28% and contained ounces of gold by 12% (Table 3 Table 4). Table 3 – Crake MRE 21/09/2021 - 0.8 g/t Au reporting cutoff Indicated Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 69 1.45 3.2 69 1.45 3.2 Transition 195 1.47 9.2 1 1.22 0.03 195 1.47 9.2 Fresh 1,070 1.47 50.7 82 1.27 3.3 1,152 1.46 54.0 Total 1,334 1.47 63.1 82 1.27 3.4 1,417 1.46 66.5 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Table 4 – Crake MRE 21/09/2021 - 0.5 g/t Au reporting cutoff Indicated Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 1,363 1.29 57 123 1.08 4 1,485 1.28 61 Transition 85 1.25 3 85 1.25 3 Fresh 252 1.27 10 252 1.27 10 Total 1,699 1.29 70 123 1.08 4 1,822 1.28 75 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. horizonminerals.com.au Page | 5 Coote The Coote MRE was originally reported as “Gold resources increase to 1.24 moz” (Coote, Capricorn, Baden Powell) dated 28 September 2022. The Coote deposit has a large volume of mineralised material between 0.5 g/t Au and 1.0 g/t Au as illustrated in Figure 3. Consequently, reporting the 2022 model (coote_09_2022.mdl) at a 0.5 g/t Au results in a 5-fold increase in tonnes and a 300% increase in ounces. Figure 3 - Grade Tonnage Curve - Coote MRE Table 5 – Coote Project – Inferred Resource by Material Type – 1.0 g/t Au cutoff Inferred Total Material Kt Au (g/t) koz kt Au (g/t) koz Oxide 68 1.80 4 68 1.80 4 Transition 38 1.41 2 38 1.41 2 Fresh 320 1.50 15 320 1.50 15 Total 425 1.54 21 425 1.54 21 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Table 6 – Coote Project – Inferred Resource by Material Type – 0.5 g/t Au Cutoff Coote Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz Oxide 212 1.04 7 212 1.04 7 Transition 338 0.77 8 338 0.77 8 Fresh 1,771 0.86 49 1,771 0.86 49 Total 2,321 0.86 64 2,321 0.86 64 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. horizonminerals.com.au Page | 6 Golden Ridge North The Golden Ridge North MRE was originally reported as “Maiden Resources for Monument and Golden Ridge North” (Golden Ridge North) dated 19 July 2023. Re-reporting the Golden Ridge North model (gr_2023.mdl) at a 0.5 g/t Au cutoff results in 230% more tonnes and 41% more ounces. Table 7 – Golden Ridge North MRE 2/08/2023 – 0.8 g/t Au reporting cutoff Indicated Inferred Total kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 38 0.99 1 47 1.12 2 84 1.06 3 Transition 166 1.18 6 184 1.39 8 350 1.29 15 Fresh 450 1.16 17 543 1.28 22 993 1.23 39 Total 653 1.15 24 774 1.30 32 1,427 1.23 57 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Table 8 – Golden Ridge North MRE 2/08/2023 – 0.5 g/t Au reporting cutoff Indicated Inferred Total kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 112 0.76 3 72 0.96 2 184 0.84 5 Transition 388 0.87 11 253 1.19 10 641 1.00 21 Fresh 1,011 0.87 28 696 1.14 26 1,707 0.98 54 Total 1,511 0.86 42 1,021 1.14 37 2,532 0.97 79 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Kalpini The Kalpini deposit was originally reported as “Kalpini Gold Project Mineral Resource Update” (Kalpini) dated 28 September 2021. During the 2021 interpretation, 80 additional 1.0 m samples were selected for assay, bringing the total available assays in the dataset to 79,234. In 2022 a MRE update was undertaken to include theses samples. The new interpretation also revised some lode orientations. Overall, these enhancements made a small but not material increase to the resource of 1.4% in ounces. Table 9 reports the MRE from the 2021 modelling. Table 10 reports the MRE from the 2022 model (kp_2022_04.mdl) at a 0.5 g/t Au cutoff grade. The update is an increase of 9,000 ounces of gold (6%). Table 9 – Kalpini Mineral Resource (MRE 28/09/2021) at a 0.8 g/t Au cutoff Indicated Inferred Total kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 28 1.78 2 5 1.40 0 33 1.71 2 Transition 205 1.83 12 18 1.17 1 223 1.77 13 Fresh 1,168 2.55 95 448 2.08 30 1,616 2.40 125 Total 1,401 2.41 109 472 2.03 31 1,872 2.31 139 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. horizonminerals.com.au Page | 7 Table 10 – Kalpini Mineral Resource (MRE 01/06/2022) at a 0.5 g/t Au cutoff Indicated Inferred Total kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 32 1.48 2 7 1.31 0 39 1.45 2 Transition 298 1.48 14 28 1.02 1 326 1.44 15 Fresh 1,439 2.17 100 556 1.76 31 1,994 2.06 132 Total 1,768 2.04 116 591 1.72 33 2,359 1.96 149 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Jacques-Peyes The Jacques-Peyes MRE comprise the adjacent but not contiguous deposits of Jacques Find and Peyes Farm. The MRE was originally reported as “Jacques Find- Peyes Farm Mineral Resource update” (Jaques-Peyes) dated 15 September 2021. Reporting of Jacques-Peyes at a 0.5 g/t Au cutoff results a 6% increase in tonnes and a 2% increase in contained ounces. Table 11 – Jacques Find and Peyes Farm Mineral Resources at a 0.8 g/t Au cutoff Indicated Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 146 2.00 9 87 1.54 4 233 1.83 14 Transition 90 2.88 8 44 1.78 3 134 2.52 11 Fresh 732 2.67 63 643 2.05 42 1,375 2.38 105 Total 968 2.59 81 774 1.98 49 1,742 2.32 130 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Table 12 – Jacques Find and Peyes Farm Mineral Resources at a 0.5 g/t Au cutoff Indicated Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Oxide 155 1.93 10 111 1.35 5 266 1.69 14 Transition 95 2.75 8 58 1.51 3 154 2.28 11 Fresh 746 2.63 63 687 1.96 43 1,433 2.31 107 Total 996 2.54 81 856 1.85 51 1,852 2.22 132 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Gordons Dam The recently acquired Gordons Dam project includes a MRE reported by Horizon as “Acquisition of Projects Near Black Swan Including Gordons Dam Project - Amended” (Gordons Dam) dated 11 August 2025. The original MRE was completed by BMGS for Yandal Resources in 2023 and reported at a 0.8 g/t Au cutoff from the model gordons_dam_bm_2303.mdl. Reporting this model at a 0.5 g/t cutoff gives a 100% increase in tonnes and a 42% increase in ounces of gold. horizonminerals.com.au Page | 8 Table 13 – Gordons Dam MRE March 2023 0.8 g/t Au cutoff Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz Oxide 148 1.95 9 148 1.95 9 Transition 152 1.49 7 152 1.49 7 Fresh 65 1.52 3 65 1.52 3 Total 365 1.68 20 365 1.68 20 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Table 14 – Gordons Dam MRE March 2023 0.5 g/t Au cutoff Inferred Total Material kt Au (g/t) koz kt Au (g/t) koz Oxide 212 1.59 11 212 1.59 11 Transition 286 1.16 11 286 1.16 11 Fresh 195 0.99 6 195 0.99 6 Total 693 1.25 28 693 1.25 28 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Listing Rule 5.8 Disclosures Pursuant to ASX listing rule 5.8.1, and in addition to the information contained in the attached JORC Code tables, the Company provides the following details in respect of the mineral resources listed above. Boorara Overview The Boorara Gold Project is located 15 km east of Kalgoorlie-Boulder (Figure 1) adjacent to the Super Pit, and 1 km southwest of the Nimbus Silver-Zinc Project site where established offices are connected to mains power and existing water supplies. Geology and Mineralisation Interpretation Boorara is hosted within the Boorara Shear Zone (BSZ), a major tectonic feature of the Kalgoorlie Terrrane. At Boorara the BSZ contains a number of ultramafic, mafic-volcanic and sedimentary units. The host Boorara Dolerite package has a 4 km strike length, and consists of layers of pyroxenite, dolerite and granophyric coarse-grained quartz dolerites. The package is at its widest in the northern area (500 m) due to intercalated dolerite, high magnesian basalt (komatiite) and sediment units. The central and southern parts of the project generally lack the internal komatiites and sediments and averages less than 60 m width. The local geology has been extensively mapped and relogged by Dr Gerard Tripp and forms the basis for the compilation of a 3D geological model for the Boorara deposit and the construct of mineralisation domains. Additionally, the vein analysis provides significant support for the grade continuity analysis. Due to the change in deposit characteristics along its strike length, the Boorara deposit is divided into three areas; Regal, Crown Jewel and Royal. The Regal mineralisation is dominantly hosted in stockworks within quartz dolerites or on the margins of sedimentary units. These consist of moderately NE dipping veins within steeply dipping zones. horizonminerals.com.au Page | 9 The Crown Jewel area has mineralisation within a moderately north-east dipping zone within the quartz dolerite. This is a continuation of the Royal (southern stockwork) style of mineralisation, but with a narrower zone of quartz dolerite and shallower dip. The Royal area presents as well-developed steeply north-east dipping zones containing high frequency vein arrays developed proximal to shears at the upper and lower contacts of the dolerite unit. Drilling Techniques The deposit was sampled using Reverse Circulation (“RC”), Diamond drillholes (“DDH”) and Grade Control RC (“GCRC”) on spacings ranging from 4 m x 10 m and 4 m x 4 m (vertical) at Royal, nominally 4 m x 10 m (vertical) at Crown Jewel and 5 m x 10 m (angled) at Regal. The exploration/resource development drilling patterns were typically spaced at 10-20 m x 20 m but can extend out to >100 m spacing where deeper. An approximate total of 337 RC holes, 50 DDH holes and 812 GCRC holes were drilled for 133,695 m, 8537 m and 22,978 m respectively. Other types of sampling such as trenches, Aircore and RAB drilling were not used in the Mineral Resource Estimate. Sampling Techniques Reverse Circulation drilling was used to obtain 1 m samples from which approximately 1.5-2 kg was pulverised to produce a 50g charge for fire assay. RC chips were geologically logged. Diamond Core was logged and sampled by cutting PQ, HQ, NQ2 core along the orientation line and submitting the half core for assay. Sample intervals were determined by the supervising geologist. Sampling Analyses Method Samples were assayed for Au ppm only for this program. Assays were determined by 50g fire assay with AAS finish samples grading >5 g/t were repeat assayed and if a sample exceeded 100 g/t or coarse gold is suspected then a screen fire assay (Au-SCR22AA) has been undertaken on those samples and those results reported instead of the fire assay result. Detection limits are typically accurate to 0.01 g/t Au. Estimation Methodology Mineralisation was domained as two mineralisation sets (termed the “Contact” Lodes and “Flat” Lodes) which were then estimated as separate block models that were then joined together for the final model. The Contact Lode mineralisation model relates to the vein stockworks contained within steeply dipping granophyric dolerites. The Flat lode mineralisation relates to sheeted extensional quartz vein arrays that are developed between the contact lodes at Regal, and mainly on the footwall side of the Crown Jewel and Royal deposits. These models were estimated separately, and the Contact lodes were overprinted onto the Flat Lode mineralisation model. In terms of the interpretation process where Flat lode Mineralisation domains crosscut the Contact domains the samples were used to form the wireframes and the composites are used to inform both models. The tenor of the mineralisation is very similar for both domains so is not considered to be an issue likely to cause over- estimation issues in the model. Grades were composited to 1 m downhole constrained within the mineralised domains. To avoid loss of data from small ‘residuals’ at the end of a composite (i.e., small intervals that might otherwise be excluded), a “best fit” compositing routine that divided each mineralised intercept into equal lengths that was as close as possible to 1 m was chosen. High grade results within the deposit were capped by analysing histograms, log histograms, log probability plots and spatial analysis of individual high grades. Top cuts for the Contact Lodes were selected on a lode- by-lode basis and top cuts for the Flat Lodes were selected on a domain grouping basis. Top cuts varied between 8 g/t and 43 g/t gold. Low grade subdomains within the Contact Lodes were all top cut to 2 g/t gold. Top cuts were applied to composites prior to estimation. horizonminerals.com.au Page | 10 Flat lode model: Flat lode domains were grouped into seven orientation domains and variography was undertaken. The Regal flat Lodes (88 domains) were individually estimated by ordinary kriging dynamic anisotropy, using hard domain boundaries. The search ellipse for the Regal Lodes was aligned to the local orientation of the mineralised trend of each domain using dynamic anisotropy. The Crown Jewel and Royal Lodes were estimated as a group, using ordinary kriging with a search ellipse flattened across strike to force a strong anisotropic search. Flat lodes were estimated into a parent block of 10 m (Y) x 10 m (X) x 5 m (Z) with sub celling to 1 m (X,Y,Z). Contact lode model: Categorical indicator variography was completed for each of the Contact lodes using dynamic anisotropy to control the search at a 0.25 g/t gold Indicator. This estimation was used to define the low grade subdomains. Variography was undertaken on the flat lode high grade sub-domains which were individually estimated by ordinary kriging using dynamic anisotropy with hard boundaries applied apart from Domain 101, 301 and 401. Contact lodes were estimated into a parent block of 10 m (Y) x 20 m (X) x 5 m (Z) with sub celling to 1 m (X) by 2 m (Y) by 1 m (Z). For both models three search passes were run. The size of the initial anisotropic search ellipsoid was based on the variogram ranges. The searches were oriented in the same directions as the variograms i.e., parallel to the individual vein geometries. Cutoff Grade The cutoff grades for Mineral Resource Estimation reporting are 0.5 g/t gold for open pit resources and the Mineral Resource has been reported above the 200 mRL (approximately 200 m below ground level) as the boundary for open pit RPEEE (“Reasonable Potential for Eventual Economic Extraction”) Previously reported MREs have used the same cutoff grade based on reasonable prospects of eventual economic extraction using optimisation shells run by Mining Consultants using assumed cost scenarios. Mineral Resource Classification Blocks have been classified as Measured, Indicated, Inferred or Unclassified based on drill hole spacing, geological continuity and estimation quality parameters. Mining and Metallurgical Parameters Gold grades and geometry of the mineralised veins are amenable to open pit mining. No dilution for mining has been incorporated into the model. The model and reported Mineral Resources are for the mineralised lodes only, and further mining studies are required to determine the appropriate amount of dilution. Trial mining in 2016 and 2020 and reconciliation of ore shall also assist in determining the appropriate mining parameters. Metallurgical test work on Boorara was completed by ALS Laboratories in 2014, 2015, a further two test work programs occurred in 2016 and another in 2018 and 2019, Bureau Veritas in 2011 and 2021 and two programs in 2017 in addition to ore characterisation test work undertaken in 2017 by HydroGeoSense. Test work was undertaken on the various lodes and weathering profiles through master and bulk composites. In addition, trial mining in 2016 of the Royal lodes processed at FMR Investments’ Greenfields Mill, and trial mining in 2020 of the Regal and Crown Jewel lodes treated at Golden Mile Milling’s Lakewood plant, enabled confirmation of metallurgical recoveries, reagent consumptions and optimal processing parameters for plant design. Comminution test work included SAG Mill Comminution Data, Unconfined compressive strength (UCS), Crushing Work Index, Bond Ball Work Index, Bond Abrasion Index which indicate the transitional/fresh ore on average is of medium hardness and moderately abrasive. horizonminerals.com.au Page | 11 Metallurgical recovery test work included gravity and CIL leach test work and direct leach test work at various grind sizes which showed moderate to high gravity recovery and high leach recovery, with milling confirming these results averaging typically above 40% gravity recovery and achieving overall recovery of 94.5% across all lodes at Boorara. Mineral Resource Statement The Mineral Resource Estimate (JORC 2012) for Boorara was originally reported as 428,000 ounces in 2021, Table 15. Table 15 – Original MRE – 0.5 Au g/t reporting Cutoff Boorara Mt Au (g/t) koz Resource category Tonnes (Mt) Grade (g/t Au) Gold Metal (Oz) Measured 1.12 1.22 44,000 Indicated 6.85 1.28 281,000 Inferred 2.56 1.26 103,000 Total 10.53 1.27 428,000 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. After mining depletion the resource is 398,000 ounces (Table 16). Table 16 – Boorara MRE 1/07/2021 – Depleted for Mining to EOM June 2025 – 0.5 g/t Au reporting cutoff Boorara Mt Au (g/t) koz Resource category Tonnes (Mt) Grade (g/t Au) Gold Metal (Oz) Measured 0.8 1.21 29,000 Indicated 6.5 1.28 266,000 Inferred 2.5 1.26 103,000 Grand Total 9.8 1.27 398,000 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Competent Persons Statement – Boorara The information in this announcement which relates to Exploration Results and geological interpretation at Boorara is based on information compiled by Horizon Minerals Limited under the supervision and review of Mr Stephen Godfrey Resource Development Manager at Horizon Minerals Ltd, who is a Fellow of the Australasian Institute of Mining and Metallurgy (FAusImm 110542) and a Member of the Australian Institute of Geoscientists (MAIG 3993). Mr Godfrey consents to the inclusion in the announcement of the matters based on their information in the form and context in which it appears. The information in this announcement which relates to the estimation of the Boorara mineral resource was compiled by Mr Mark Drabble. Mr Drabble is a Principal Geological Consultant at Optiro Pty Ltd, and an independent consultant to Horizon Minerals Limited and is responsible for the Mineral Resource Estimation. Mr Drabble is a Member of the Australian Institute of Mining and Metallurgy and a Member of the Australian Institute of Geoscientists. Messrs Godfrey and Drabble have sufficient experience relevant to the style of mineralisation and deposit type under consideration and to the activities 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”. Messrs Godfrey and Drabble consent to the inclusion in the report of matters based on his information in the form and context in which it appears. horizonminerals.com.au Page | 12 Phillips Find Overview Horizon acquired the Phillips Find Project in 2024 through a merger with Greenstone Resources (GSR). Horizon inherited full ownership of the project tenements but have not completed any drilling activity at the Project. Following acquisition by Horizon, the company established a joint venture (JV) with BML Ventures Pty Ltd to develop and mine the open pits at Phillips Find. Under this arrangement, BML funds all project costs and manages operations, and after cost recovery, net cashflows are split 50:50 between Horizon and BML. Geology and Mineralisation Interpretation Regional geological and magnetic data indicate that the Phillips Find area lies within the Coolgardie Domain but close to the north-eastern boundary with the adjacent Kalgoorlie Domain (Swager 1994). The boundary between the two domains is marked by a major regional scale, north-west striking high strain zone called the Kunanalling Shear Zone that rotates, truncates and deforms variably oriented stratigraphy and older structures within the Coolgardie Domain. The Kunanalling Shear lies 25 km west of the Ida Fault, which marks the western margin of the main Norseman-Kalgoorlie greenstone belt. Regional seismic data indicates the Ida Fault is a crustal scale, east- dipping fault with both normal and reverse movements along it (Goleby et al 1993) and that the Kunanalling Shear Zone may be linked to the Ida Fault at depth along a sub-horizontal detachment structure. On a regional scale, the lithologies between the Ida Fault and the Kunanalling Shear Zone are characterised by higher metamorphic grades (low to mid amphibolite facies) and more pervasive deformation compared to the Kalgoorlie Domain and lie within the “dynamic” regional metamorphic domain of Binns et al (1976). This is in part related to the intrusion of the surrounding granitoid domains but was also likely to have been synchronous with much of the deformation in the belt. The Phillips Find area is underlain in part by three major granite intrusions; the Dunnsville Granodiorite, the Doyle Dam Granodiorite and the Bali Monzogranite. On the basis of cross-cutting relationships, Swager (1994) interpreted the Dunnsville Granodiorite to have been emplaced during or pre major regional folding (assigned to D2 deformation age) whereas the Bali Monzogranite was intruded post D2 and possibly syn-D3 (major regional shearing), and the Doyle Dam Granodiorite was intruded as late as post D3. The margins of the granites may have acted as extensional shear zones during emplacement helping to unroof the high grade metamorphic rocks and emplace them at higher crustal levels (Williams and Whitaker 1993). The Phillips Find Project area is dominated by the Doyles Dam/Dunnsville Granodiorite, which is an elongated dome striking northwest. The rock stratigraphy to the north of the dome consists of a folded sequence of carbonaceous shales, felsic intrusives, and dolerite and ultramafic sills within the Dunnsville Basalt. Further to the north is the Kunanalling Basalt, felsic sediments and dolerite. There is a strong series of faulting striking NNE cutting through the complete sequence (including the dome) as well as bedding parallel shearing/faulting striking NW. Interpretations of domain continuity were initially undertaken in Leapfrog 3D software, with mineralisation intercepts correlating to individual domains manually selected prior to creation of a vein model. Interpretation was a collaborative process with Greenstone’s geologists to ensure modelling appropriately represented the current understanding of geology and mineralisation controls. The Phillips Find project area has an early geological architecture established by D1 northsouth shortening where thrusts and related folding created locally east-west trending structural and stratigraphic contacts. Mineralising fluids migrating through the Kunanalling Shear and subsidiary structures during D2 an D3 found favourable sites for gold accumulation where the Kunanalling related shears intersected existing lithological contacts, often at a high angle. The precipitation of gold in this structural setting was likely enhanced by the reducing effect of carbonaceous shales present in the area. Those shales would have had reducing effect on any fluids within tens of metres of the shales thems