Announcement PDF ASX RELEASE 20 OCTOBER 2025 Horizon Gold Limited ACN: 614 175 923 Suite 8, Level 3, 47 Havelock Street, West Perth WA 6005 | PO Box 39, West Perth WA 6872 Telephone: +61 8 6331 6092 | Email: info@horizongold.com.au | Website: www.horizongold.com.au 1 QUARTERLY ACTIVITIES REPORT FOR THE PERIOD ENDED 30 SEPTEMBER 2025 Key Points  Work on the Gum Creek Feasibility Study remains on schedule for completion H1 CY 2026  24 vertical water bores completed at seven prospects have provided essential information for the Feasibility Study groundwater and water balance models.  Water bores sampled for gold returned numerous significant intercepts including: Howards Prospect:  39m @ 4.58g/t Au from 133m including 17m @ 9.86g/t Au from 148m  72m @ 2.26g/t Au from 18m including 18m @ 5.09g/t Au from 27m  124m @ 1.27g/t Au from 7m including 16m @ 2.97g/t Au from 88m  38m @ 4.02g/t Au from 112m including 21m @ 6.08g/t Au from 121m  80m @ 1.08g/t Au from 18m including 10m @ 2.12g/t Au from 83m  23m @ 1.23g/t Au from 99m including 3m @ 3.31g/t Au from 112m Swan-Swift-Shrike Prospects:  23m @ 1.60g/t Au from 97m to EOH including 3m @ 5.06g/t Au from 102m  15m @ 1.19g/t Au from 102m including 4m @ 3.32g/t Au from 102m  12m @ 1.28g/t Au from 57m Wedge Prospect:  4m @ 3.83g/t Au from 151m Kingfisher Prospect:  6m @ 1.37g/t Au from 21m including 2m @ 3.72g/t Au from 22m  Artificial Intelligence (AI) powered mineral exploration platform (DORA) has been initiated across the Gum Creek Gold Project through a collaborative partnership with VRIFY. DORA delivers rapid, predictive prospectivity modelling, identifying high-value drilling targets with potentially enhanced accuracy and reduced human bias.  Resource expansion RC drilling has been completed at Goldfinch, Robin, Thornbill West and Toucan all located within 3 kilometres of the old Gidgee Mill. All results are awaited.  Diamond drilling aimed at testing high priority targets down plunge of previous high grade drill intercepts including 15m @ 28.5g/t Au from 346m and 10m @ 8.9g/t Au from 190m (Kingfisher), and 30m @ 21.1g/t Au from 57m and 13m @ 10.8g/t Au from 122m (Omega) has commenced. ________________________________________________________________________________ 2 Horizon Gold Limited (ASX: HRN) (Horizon or the Company) is focussed on progressing its exploration and development activities at the 100%-owned Gum Creek Gold Project (Gum Creek or the Project) located in the Mid-West Region of Western Australia (Figure 1). Gum Creek has historically produced more than 1 million ounces of gold and currently hosts a gold resource of 44.45Mt @ 1.50g/t Au for 2.14 million ounces1 . The Project currently covers 524km2 of granted tenure over the highly prospective and underexplored Gum Creek greenstone belt, which contains 37 open pit and three underground gold mines. During the quarter the Company completed reverse circulation (RC) water bore drilling to obtain essential information for developing a site-wide groundwater model and water balance model as part of the ongoing Gum Creek Feasibility Study. The holes were sampled and assayed for gold due to their proximity to known gold mineralisation and returned numerous significant intercepts. The Company also commenced a strategic partnership with VRIFY Technology Inc. (“VRIFY”), a global leader in AI-assisted mineral exploration. VRIFY will use its proprietary AI-Assisted Mineral Discovery Platform, DORA, to combine VRIFY’s largest proprietary mineral datasets with over 40 years of geological data from Gum Creek to help discover, prioritise and validate high-potential targets and accelerate growth of the existing 2.14 Moz gold resource. Figure 1: Gum Creek Gold Project and surrounding gold resources and operating gold processing facilities. 1 Refer to Horizon Gold Limited ASX Announcement dated 15 May 2023 titled “19% Increase in Resources at Gum Creek Project”. 3 Water Bore Drilling Program Results The Company completed 24 vertical water bores (RC holes) for 2,700m at the Eagle, Hawk, Howards, Hyperno-Reliance, Kingfisher, Swan-Swift and Wedge prospects. All holes were geologically logged, sampled, and airlifted with water flows recorded wherever possible. Slotted 50mm casing was inserted into 10 of the most productive holes for water depth monitoring purposes and for sub-terranean fauna survey work. Two old production bores were refurbished (one at Swan and one at Kingfisher) and the most productive hole at Howards was converted into a dewatering bore for water pumping purposes. Pumping test work has now been completed at all Feasibility Study prospects. Apart from providing essential groundwater information for the Feasibility Study, gold assays from the water bore drilling have confirmed historic drilling results, provided valuable continuity of mineralisation information within the tested prospects, and will increase the resource confidence levels within each of the resource models. Figure 2: Gum Creek Gold Project existing Mineral Resources, Potential Mineral Resources and Exploration Targets over simplified geology2 . 2 Refer to Horizon Gold Limited ASX announcement titled “Investor Presentation” dated 13 May 2025. 4 Howards Prospect The Company completed 3 RC holes for 483m including 2 monitoring bores and one dewatering bore at the Howards Prospect (Figure 2). The holes were drilled into areas of estimated high water flows. All 3 holes were used for sub-terranean fauna sampling. Drilling successfully intercepted water at approximately 10m and returned the following significant gold intercepts (Figures 3 & 4):  72m @ 2.26g/t Au from 18m including 18m @ 5.09g/t Au from 27m (HWWB001)  23m @ 1.23g/t Au from 99m including 3m @ 3.31g/t Au from 112m (HWWB001)  39m @ 4.58g/t Au from 133m including 17m @ 9.86g/t Au from 148m (HWWB001)  124m @ 1.27g/t Au from 7m including 16m @ 2.97g/t Au from 88m (HWWB002)  80m @ 1.08g/t Au from 18m including 10m @ 2.12g/t Au from 83m (HWWB003)  38m @ 4.02g/t Au from 112m including 21m @ 6.08g/t Au from 121m (HWWB003) Figure 3: Howards Prospect drill hole location plan showing A$2900/oz optimised pit shells outlined, recent drill hole traces (black) and recent gold intercepts (labelled) over interpreted geology. 5 Figure 4: Howards Prospect cross section showing mineralised envelopes and significant historic and water bore intercepts (>5.0 GxM). Swan, Swift, Shrike Prospects Five RC water bores were drilled at the Swan, Swift and Shrike prospects for 470m (Figure 1). Two holes were converted into monitoring bores. Drilling successfully intercepted water at approximately 37m and returned the following significant gold intercepts (Figures 5 & 6):  23m @ 1.60g/t Au from 97m to EOH including 3m @ 5.06g/t Au from 102m (SSWB004)  15m @ 1.19g/t Au from 102m including 4m @ 3.32g/t Au from 102m (SSWB001)  12m @ 1.28g/t Au from 57m (SSWB002)  6m @ 1.42g/t Au from 77m (SSWB002)  2m @ 2.68g/t Au from 31m (SSWB003) 6 Figure 5: Swan-Swift Area drill hole location plan showing A$2900/oz optimised pit shells outlined, water bore collars (blue) and water bore gold intercepts >3 GxM (labelled) over satellite image. Figure 6: Swift Prospect cross section showing mineralised envelope and significant historic and water bore intercepts. 7 Wedge Prospect The Company completed 2 RC holes for 282m at the Wedge Prospect (Figure 2). Drilling successfully intercepted water at a depth of 28m and returned the following significant gold intercepts (Figure 7):  4m @ 3.83g/t Au from 151m (WEWB002)  3m @ 2.19g/t Au from 145m (WEWB002)  2m @ 2.00g/t Au from 113m (WEWB001) Figure 7: Wedge Prospect drill hole location plan showing A$2900/oz optimised pit shell outlines, water bore collars (blue) and water bore gold intercepts >3 GxM (labelled) over satellite image. Kingfisher Prospect Five RC water bores were drilled at the Kingfisher Prospect (Figure 2) for 608m including 2 monitoring bores and one troglofauna sampling bore. Drilling successfully intercepted water at approximately 38m and returned the following significant gold intercept (Figure 8). KFWB002 was the only water bore drilled in the vicinity of known gold mineralisation.  6m @ 1.37g/t Au from 21m including 2m @ 3.72g/t Au from 22m (KFWB002) 8 Figure 8: Kingfisher Prospect drill hole location plan showing water bore collars (blue) and water bore gold intercepts >3 GxM (labelled) over satellite image. Summary of Drilling Results from Eagle, Hyperno-Reliance and Hawk Prospects The Company completed 2 RC holes for 299m at the Eagle Prospect (Figure 2). Drilling successfully intercepted water at a depth of 32m and returned best gold intercepts of 2m @ 1.04g/t Au from 25m (EAWB001) and 3m @ 1.43g/t Au from 114m (EAWB001) (Figure 5). Four RC water bores were drilled at the Hyperno-Reliance Prospect (Figure 2) for 222m. Three bores were cased as monitoring bores and all 3 used for sub-terranean fauna sampling purposes. Drilling successfully intercepted water at approximately 8m and returned a best gold intercept of 3m @ 1.03g/t Au from 26m (HYWB002). Three RC water bores were drilled at the Hawk Prospect (Figure 2) for 336m. One bore was cased as a monitoring bore. Drilling successfully intercepted water at approximately 8m and returned a best gold intercept of 8m @ 0.74g/t Au from 72m (HKWB001). All gold mineralisation encountered in the water bore drilling program will be incorporated into the respective mineralisation wireframes and ultimately incorporated into an updated mineral resource estimate. 9 AI-Assisted Mineral Discovery Platform (DORA) VRIFY have commenced the exploration data integration process, compiling all relevant drilling, geochemical, geophysical, structural, and topographic data into its proprietary AI-Assisted Mineral Discovery Platform (DORA) for processing and augmentation. By maximising the use of Horizon Gold’s extensive exploration dataset, DORA’s machine-learning models will be able to enhance the extensive geoscientific and geospatial data and create AI-generated 3D prospectivity maps assigning a prospectivity score to each target identified. The software aims to shorten target generation timelines and increase confidence in conceptual drill targeting. Completion of the initial AI prospectivity model over Gum Creek is expected Q4 2025, with an exploration target review and target field validation due Q1 2026 and continuous data addition and target refinement to continue throughout 2026. Feasibility Study Progress and Resource Drilling Work on the Gum Creek Feasibility Study remains on schedule for completion H1 CY 2026, with a draft processing report received, most environmental and Heritage surveys completed, and mine design and water balance modelling all advancing well. Resource expansion RC drilling has been completed at Goldfinch, Robin, Thornbill West and Toucan all located within 3 kilometres of the old Gidgee Mill. All results are awaited. Deep diamond drilling aimed at testing high priority targets down plunge of existing high-grade mineralisation at the Kingfisher and Omega prospects has commenced. The drilling is testing beneath impressive previous drill intercepts including 15m @ 28.5g/t Au from 346m and 10m @ 8.9g/t Au from 190m3 (Kingfisher), and 30m @ 21.1g/t Au from 57m and 13m @ 10.8g/t Au from 122m4 (Omega). Corporate Capital Raising On the 21 July 2025 the Company announced a $12 million capital raising in the form of a private Placement of $5 million to institutional and high net worth investors and 1 for 10 Non-renounceable Entitlement Offer to existing shareholders to raise up to a maximum of $7 million, both capital raising initiatives were undertaken at $0.48 per share. As a result on 29 July 2025 the Company issued 10,320,000 shares in respect to the Placement to raise $4,953,600 (before costs), on 26 August 2025 the Company issued 12,400,670 shares in respect to Non-renounceable Entitlement Offer and on 4 September 2025 the Company issued 2,083,234 shares being the remaining shortfall shares in the Non-renounceable Entitlement Offer (raising a total of $6,952,274 (before costs) in the Non- renounceable Entitlement Offer). The funds from the capital raising have and will be directed towards completion of the Company’s Feasibility Study, further resource exploration drilling, the repayment of debt and general working capital. Funding In April 2025 the Company secured a $2,000,000 short-term loan facility for working capital from Horizon’s major shareholder Zeta Resources Limited. The loan facility was unsecured, with interest 3 Refer to Horizon Gold Limited ASX announcements titled “Diamond drilling returns 15m @ 28.5g/t Au from Kingfisher" dated 12 December 2022 and titled “Outstanding gold intercepts returned from Gum Creek Diamond Drilling” dated 15 March 2022. 4 Refer to Horizon Gold Limited ASX announcement titled “Gum Creek Geological Review” dated 15 February 2021 10 payable at the rate of 10.35% per annum. The outstanding short-term loan balance, which was increased from $500,000 to $1,000,000 during the quarter was satisfied in full through offset, including interest, as part of the application process in relation to the above capital raising. As at 30 September 2025, Horizon had a cash at hand balance of $8,229,000. Annual General Meeting The Company will be holding its Annual General Meeting on Thursday 20 November 2025 at 9.30am (AWST) in the Meeting Room of The Country Women’s Association of Western Australia, 1176 Hay Street, West Perth, WA 6005. Additional ASX Listing Rule Disclosures As required by ASX Listing Rule 5.3, the Company advises it spent $2,580,000 on exploration and evaluation activities during the quarter. The expenditure is predominantly related to costs associated with resource drilling, the Gum Creek Feasibility Study and ongoing tenement rents and rates. There was no mining development or production activities conducted during the quarter. The total amount paid to directors of the entity and their related parties and associates (Section 6 of Appendix 5B) was $142,000, encompassing the Managing Directors salary, Executive Director fees, Non-Executive Directors’ fees and associated superannuation, and $37,000 relating to geological drafting, database administration services and other services. Mining Tenements The status of the Company’s mining tenements as at 30 September 2025 are detailed in Appendix 1. This ASX announcement was authorised for release by the Horizon Board. For further information contact: Leigh Ryan Managing Director +61 8 6331 6092 11 Horizon Gold Limited Mineral Resources Table A: Gum Creek Gold Resources as at 15 May 2023 Resource Date Cut-off grade (g/t Au) Indicated Inferred Total Tonnes Au (g/t) Gold (oz) Tonnes Au (g/t) Gold (oz) Tonnes Au (g/t) Gold (oz) Swan/Swift OC Jul-22 0.4 9,980,000 1.09 349,500 2,735,000 0.96 84,600 12,715,000 1.06 434,100 Swan UG Jul-22 2.5 / 3.0* 301,000 6.91 66,900 226,000 7.10 51,600 527,000 6.99 118,500 Swift UG Jul-22 3.0 - - - 138,000 5.72 25,400 138,000 5.72 25,400 Wilsons UG Jul-13 1.0 2,131,000 5.33 365,000 136,000 5.95 26,000 2,267,000 5.36 391,000 Howards May-23 0.4 8,064,000 0.82 213,100 2,136,000 0.78 53,800 10,200,000 0.81 266,900 Kingfisher OC May-23 0.6 621,000 1.77 35,400 269,000 1.12 9,700 890,000 1.58 45,100 Kingfisher UG May-23 1.5 359,000 3.48 40,200 917,000 3.24 95,500 1,276,000 3.31 135,700 Heron May-23 0.6 330,000 2.11 22,400 1,822,000 1.51 88,200 2,152,000 1.60 110,600 Heron South May-23 0.8 720,000 1.79 41,400 761,000 1.53 37,500 1,481,000 1.66 78,900 Shiraz May-23 0.4 2,539,000 0.70 57,300 1,064,000 0.63 21,600 3,603,000 0.68 78,900 Eagle May-23 0.8 395,000 1.94 24,700 764,000 1.80 44,100 1,159,000 1.85 68,800 Wyooda Jul-22 0.8 430,000 1.56 21,600 862,000 1.56 43,200 1,292,000 1.56 64,800 Snook Jul-22 0.8 75,000 2.57 6,200 846,000 1.76 47,800 921,000 1.82 54,000 Hawk May-23 0.6 378,000 1.28 15,500 471,000 1.25 18,900 849,000 1.26 34,400 Toedter Aug-16 0.5 - - - 689,000 1.54 34,000 689,000 1.54 34,000 Specimen Well May-23 0.8 - - - 529,000 1.50 25,500 529,000 1.50 25,500 Wedge May-23 0.6 - - - 487,000 1.52 23,800 487,000 1.52 23,800 Camel Bore Jul-22 0.8 379,000 1.47 17,900 100,000 1.21 3,900 479,000 1.42 21,800 Kearrys May-23 0.6 450,000 1.24 18,000 46,000 1.35 2,000 496,000 1.25 20,000 Psi Jul-22 0.8 100,000 2.08 6,700 226,000 1.69 12,300 326,000 1.81 19,000 Hyperno- Reliance May-23 0.6 119,000 1.73 6,600 326,000 1.16 12,200 445,000 1.31 18,800 Melbourne Bitter May-23 0.6 214,000 1.56 10,700 148,000 1.28 6,100 362,000 1.44 16,800 Deep South Reliance May-23 0.6 176,000 1.64 9,300 48,000 1.56 2,400 224,000 1.62 11,700 Eagles Peak May-23 0.6 264,000 1.19 10,100 41,000 0.99 1,300 305,000 1.16 11,400 Orion Jul-22 0.8 69,000 1.49 3,300 182,000 1.40 8,200 251,000 1.43 11,500 Wahoo Jul-22 0.8 - - - 258,000 1.25 10,400 258,000 1.25 10,400 Fangio May-23 0.6 99,000 1.32 4,200 30,000 1.35 1,300 129,000 1.33 5,500 Total 28,193,000 1.48 1,346,000 16,257,000 1.51 791,300 44,450,000 1.50 2,137,300 * Cut-off grades are 2.5g/t Au for Swan Underground (UG) Indicated, and 3.0g/t Au for Swan UG Inferred. ** Wyooda includes the Kingston Town, Think Big and Manikato resources which are within 600m and 200m of each other respectively. Notes: Figures have been rounded. 12 Competent Persons Statement: The information that relates to Exploration Results in this announcement is based on information compiled by Mr Leigh Ryan, who is a member of The Australasian Institute of Geoscientists. Mr Ryan is the Managing Director of Horizon Gold Limited and holds shares and options in the Company, Mr Ryan has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking 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 Ryan consents to the inclusion in the report of the matters based on information provided in the form and context in which it appears. No New Information or Data: This announcement contains references to Mineral Resource estimates, all of which have been cross referenced to previous market announcements. The Company confirms that it is not aware of any additional information or data that materially affects the information included in the relevant market announcements and, in the case of estimates of Mineral Resources, that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. Forward Looking Statements: This ASX announcement may contain certain “forward-looking statements” which may not have been based solely on historical facts but rather may be based on the Company’s current expectations about future events and results. Where the Company expresses or implies an expectation or belief as to future events or results, such expectation or belief is expressed in good faith and believed to have a reasonable basis. However, forward looking statements are subject to risks, uncertainties, assumptions and other factors, which could cause actual results to differ materially from future results expressed, projected or implied by such forward-looking statements. Such risks include, but are not limited to metals price volatility, currency fluctuations, as well as political and operational risks and governmental regulation and judicial outcomes. 13 APPENDIX 1: (a) Horizon Group Mining Tenements held as at 30 September 2025 Lease Location Area of Interest Status Expiry Date Holder Horizon's Interest Mineral Rights E51/1538 Gidgee Gum Creek Granted 03-Feb-26 GUM CREEK 100% All E51/1844 Gidgee Gum Creek Granted 22-Jan-28 GUM CREEK 100% All E51/2027 Gidgee Gum Creek Granted 09-Sep-26 GUM CREEK 100% All E51/2028 Gidgee Gum Creek Granted 09-Sep-26 GUM CREEK 100% All E53/1725 Gidgee Gum Creek Granted 03-Jul-27 GUM CREEK 100% All E53/1955 Gidgee Gum Creek Granted 18-Jan-28 GUM CREEK 100% All L51/93 Gidgee Gum Creek Granted 24-Nov-34 GUM CREEK 100% Infrastructure L53/95 Gidgee Gum Creek Granted 13-Dec-28 GUM CREEK 100% Infrastructure L53/96 Gidgee Gum Creek Granted 13-Dec-28 GUM CREEK 100% Infrastructure L53/199 Gidgee Gum Creek Granted 29-Jul-36 GUM CREEK 100% Infrastructure L57/20 Gidgee Gum Creek Granted 20-Jun-44 GUM CREEK 100% Infrastructure L57/47 Gidgee Gum Creek Granted 13-Aug-34 GUM CREEK 100% Infrastructure M51/104 Gidgee Gum Creek Granted 11-May-29 GUM CREEK 100% All M51/105 Gidgee Gum Creek Granted 09-May-31 GUM CREEK 100% All M51/157 Gidgee Gum Creek Granted 09-Mar-30 GUM CREEK 100% All M51/185 Gidgee Gum Creek Granted 18-Feb-30 GUM CREEK 100% All M51/186 Gidgee Gum Creek Granted 18-Feb-30 GUM CREEK 100% All M51/290 Gidgee Gum Creek Granted 09-May-31 GUM CREEK 100% All M51/410 Gidgee Gum Creek Granted 10-Mar-34 GUM CREEK 100% All M51/458 Gidgee Gum Creek Granted 09-Feb-35 GUM CREEK 100% All M53/10 Gidgee Gum Creek Granted 24-Nov-25 GUM CREEK 100% All M53/11 Gidgee Gum Creek Granted 24-Nov-25 GUM CREEK 100% All M53/105 Gidgee Gum Creek Granted 29-Aug-30 GUM CREEK 100% All M53/153 Gidgee Gum Creek Granted 28-Jun-32 GUM CREEK 100% All M53/251 Gidgee Gum Creek Granted 02-Sep-34 GUM CREEK 100% All M53/500 Gidgee Gum Creek Granted 21-May-42 GUM CREEK 100% All M53/716 Gidgee Gum Creek Granted 07-Sep-40 GUM CREEK 100% All M53/904 Gidgee Gum Creek Granted 28-Sep-42 GUM CREEK 100% All M53/988 Gidgee Gum Creek Granted 12-Mar-45 GUM CREEK 100% All M57/634 Gidgee Gum Creek Granted 14-Jul-35 GUM CREEK 100% All M57/635 Gidgee Gum Creek Granted 01-Sep-35 GUM CREEK 100% All E53/2162 Gidgee Gum Creek Granted 07-Feb-27 GUM CREEK 100% All E53/2168 Gidgee Gum Creek Granted 01-Mar-27 GUM CREEK 100% All E57/1177 Gidgee Gum Creek Granted 30-Jun-27 GUM CREEK 100% All P53/1702 Gidgee Gum Creek Granted 30-Sep-27 GUM CREEK 100% All E57/1405 Gidgee Gum Creek Application N/A GUM CREEK 100% All E57/1407 Gidgee Gum Creek Granted 13-Feb-30 GUM CREEK 100% All E51/2203 Gidgee Gum Creek Application N/A GUM CREEK 100% All E53/2321 Gidgee Gum Creek Granted 04-Dec-29 GUM CREEK 100% All E57/1421 Gidgee Gum Creek Granted 17-Dec-29 GUM CREEK 100% All L51/136 Gidgee Gum Creek Granted 07-Jan-46 GUM CREEK 100% Infrastructure L53/307 Gidgee Gum Creek Granted 23-Jul-45 GUM CREEK 100% Infrastructure L53/308 Gidgee Gum Creek Granted 23-Jul-45 GUM CREEK 100% Infrastructure 14 Lease Location Area of Interest Status Expiry Date Holder Horizon's Interest Mineral Rights L53/310 Gidgee Gum Creek Application N/A GUM CREEK 100% Infrastructure L57/71 Gidgee Gum Creek Granted 17-Sep-45 GUM CREEK 100% Infrastructure L57/74 Gidgee Gum Creek Granted 31-Aug-46 GUM CREEK 100% Infrastructure L57/75 Gidgee Gum Creek Granted 31-Aug-46 GUM CREEK 100% Infrastructure L57/76 Gidgee Gum Creek Application N/A GUM CREEK 100% Infrastructure G57/12 Gidgee Gum Creek Application N/A GUM CREEK 100% Infrastructure E57/1463 Gidgee Gum Creek Application N/A GUM CREEK 100% All E57/1464 Gidgee Gum Creek Granted 01-Jul-30 GUM CREEK 100% All E = Exploration Licence (WA) M = Mining Lease (WA) P = Prospecting Licence (WA) L = Miscellaneous Licence (WA) G = General Purpose Lease (WA) Holder: GUM CREEK = Gum Creek Gold Mines Pty Ltd (100% Subsidiary of Horizon Gold Limited) * Renewal Application submitted (b) Changes of Interest in mining tenements during the quarter Tenement Reference and Location Nature of Interest Interest at beginning of Quarter Interest at end of Quarter L57/12 Gidgee Application 0% 100% L57/74 Gidgee Application Granted 100% 100% L57/75 Gidgee Application Granted 100% 100% (c) Farm-in or farm-out changes during the Quarter Tenement Reference and Location Nature of Interest Interest at beginning of Quarter Interest at end of Quarter Nil Rule 5.5 ASX Listing Rules Appendix 5B (17/07/20) Page 1 + See chapter 19 of the ASX Listing Rules for defined terms. Appendix 5B Mining exploration entity or oil and gas exploration entity quarterly cash flow report Name of entity HORIZON GOLD LIMITED ABN Quarter ended (“current quarter”) 27 614 175 923 30 SEPTEMBER 2025 Consolidated statement of cash flows Current quarter $A’000 Year to date (3 months) $A’000 1. Cash flows from operating activities 4 4 1.1 Receipts from customers 1.2 Payments for - - (a) exploration & evaluation (if expensed) (b) development - - (c) production - - (d) staff costs (incl for Care & Maint.) (26) (26) (e) direct site Care & Maint. costs (7) (7) (f) administration and corporate costs (301) (301) 1.3 Dividends received (see note 3) - - 1.4 Interest received 47 47 1.5 Interest and other costs of finance paid - - 1.6 Income taxes paid - - 1.7 Government grants and tax incentives - - 1.8 Other (WA State MRF payments) (252) (252) 1.9 Net cash from / (used in) operating activities (535) (535) 2. Cash flows from investing activities - - 2.1 Payments to acquire or for: (a) entities (b) tenements - - (c) property, plant and equipment - - (d) exploration & evaluation (if capitalised) (2,580) (2,580) (e) investments - - (f) other non-current assets - - Appendix 5B Mining exploration entity or oil and gas exploration entity quarterly cash flow report ASX Listing Rules Appendix 5B (17/07/20) Page 2 + See chapter 19 of the ASX Listing Rules for defined terms. Consolidated statement of cash flows Current quarter $A’000 Year to date (3 months) $A’000 2.2 Proceeds from the disposal of: - - (a) entities (b) tenements - - (c) property, plant and equipment - - (d) investments - - (e) other non-current assets - - 2.3 Cash flows from loans to/from other entities - - 2.4 Dividends received (see note 3) - - 2.5 Other – security deposits paid Other – security deposits received - - - - 2.6 Net cash from / (used in) investing activities (2,580) (2,580) 3. Cash flows from financing activities 10,891 10,891 3.1 Proceeds from issues of equity securities (excluding convertible debt securities) 3.2 Proceeds from issue of convertible debt securities - - 3.3 Proceeds from exercise of options - - 3.4 Transaction costs related to issues of equity securities or convertible debt securities (550) (550) 3.5 Proceeds from borrowings 500 500 3.6 Repayment of borrowings - - 3.7 Transaction costs related to loans and borrowings - - 3.8 Dividends paid - - 3.9 Other – Lease payments - - 3.10 Net cash from / (used in) financing activities 10,841 10,841 4. Net increase / (decrease) in cash and cash equivalents for the period 4.1 Cash and cash equivalents at beginning of period 503 503 4.2 Net cash from / (used in) operating activities (item 1.9 above) (535) (535) 4.3 Net cash from / (used in) investing activities (item 2.6 above) (2,580) (2,580) 4.4 Net cash from / (used in) financing activities (item 3.10 above) 10,841 10,841 Appendix 5B Mining exploration entity or oil and gas exploration entity quarterly cash flow report ASX Listing Rules Appendix 5B (17/07/20) Page 3 + See chapter 19 of the ASX Listing Rules for defined terms. Consolidated statement of cash flows Current quarter $A’000 Year to date (3 months) $A’000 4.5 Effect of movement in exchange rates on cash held - - 4.6 Cash and cash equivalents at end of period 8,229 8,229 5. Reconciliation of cash and cash equivalents at the end of the quarter (as shown in the consolidated statement of cash flows) to the related items in the accounts Current quarter $A’000 Previous quarter $A’000 5.1 Bank balances 554 481 5.2 Call deposits 7,653 - 5.3 Bank overdrafts - - 5.4 Other – Term Deposits < 3 months 22 22 5.5 Cash and cash equivalents at end of quarter (should equal item 4.6 above) 8,229 503 6. Payments to related parties of the entity and their associates Current quarter $A'000 6.1 Aggregate amount of payments to related parties and their associates included in item 1 142 6.2 Aggregate amount of payments to related parties and their associates included in item 2 37 Note: if any amounts are shown in items 6.1 or 6.2, your quarterly activity report must include a description of, and an explanation for, such payments. Appendix 5B Mining exploration entity or oil and gas exploration entity quarterly cash flow report ASX Listing Rules Appendix 5B (17/07/20) Page 4 + See chapter 19 of the ASX Listing Rules for defined terms. 7. Financing facilities Note: the term “facility’ includes all forms of financing arrangements available to the entity. Add notes as necessary for an understanding of the sources of finance available to the entity. Total facility amount at quarter end $A’000 Amount drawn at quarter end $A’000 7.1 Loan facilities - - 7.2 Credit standby arrangements - - 7.3 Other (please specify) - - 7.4 Total financing facilities - - 7.5 Unused financing facilities available at quarter end - 7.6 Include in the box below a description of each facility above, including the lender, interest rate, maturity date and whether it is secured or unsecured. If any additional financing facilities have been entered into or are proposed to be entered into after quarter end, include a note providing details of those facilities as well. 8. Estimated cash available for future operating activities $A’000 8.1 Net cash from / (used in) operating activities (item 1.9) (535) 8.2 (Payments for exploration & evaluation classified as investing activities) (item 2.1(d)) (2,580) 8.3 Total relevant outgoings (item 8.1 + item 8.2) (3,115) 8.4 Cash and cash equivalents at quarter end (item 4.6) 8,229 8.5 Unused finance facilities available at quarter end (item 7.5) - 8.6 Total available funding (item 8.4 + item 8.5) 8,229 8.7 Estimated quarters of funding available (item 8.6 divided by item 8.3) 2.64 Note: if the entity has reported positive relevant outgoings (ie a net cash inflow) in item 8.3, answer item 8.7 as “N/A”. Otherwise, a figure for the estimated quarters of funding available must be included in item 8.7. 8.8 If item 8.7 is less than 2 quarters, please provide answers to the following questions: 8.8.1 Does the entity e