Slide 1: Investor Virtual Webinar and Presentation announcement
ASX Announcement ASX: GML 3 September 2026 INVESTOR VIRTUAL WEBINAR AND PRESENTATION Gateway Mining Limited (ASX:GML) (Gateway or the Company) is pleased to advise shareholders and investors that the Company will be presenting a virtual webinar on Monday, 7 September 2026 at 9:30am WST (11:30am AEST
Slide 2: Yandal - Australia's Next Multi Million-Ounce Gold Camp
Yandal - Australia's Next Multi Million-Ounce Gold Camp 1 For personal use only Gateway Mining Limited September 2026 Investor Presentation Richard Pugh, Chief Executive Officer 1
Slide 3: Important Information and Disclaimer
2 Important Information and Disclaimer Forward Looking Statements ▪ This presentation has been prepared by Gateway Mining Ltd (GML). The information contained in this presentation is a professional opinion only and is given in good faith. Certain information in this document has been derived from th
Slide 4: Our Team
3 Our Team Management team responsible for identifying, acquiring and advancing the Yandal Gold Project ▪ +15 years experience in formation, financing and development of natural resources companies, including Andrew Bray For personal use only Strickland Metals Ltd, Silver Mines Ltd, Futura Resources
Slide 5: Corporate Summary
4 Corporate Summary CAPITAL STRUCTURE (as at 2 September) ASX Ticker GML For personal use only Shares on issue 2,322,814,859 Options on issue1 91,558,083 Performance Rights (12.5c, 17.5c and 25c) 72,000,000 Cash and liquids2 $15.1M Share Price $0.090 Market Capitalisation ~$209M 1. 71,558,083 option
Slide 6: Project Overview
5 Project Overview For personal use only ▪ Within 50km of Northern Star’s Yandal Operations Centre. ▪ >400koz Mineral Resource Estimate.1 1. Refer to Appendix A for further details regarding Yandal Mineral Resource Estimate.
Slide 7: A busy twelve months…
A busy twelve months… 6 …laying the foundations for active resource growth Work Completed For personal use only ▪ >160,000 metres of AC drilling. ▪ >20,000 multi-element drill samples. ▪ Processing of project scale magnetic and gravity data sets to identify key mineralised structures. Deliverables ▪
Slide 8: Project Overview
7 Project Overview ▪ 70km of prospective greenstone belt. For personal use only ▪ Orogenic Gold Targets ▪ Significant gold mineralisation based on four key factors: 1. Mafic-intermediate contact - creates the perfect rheological contrast for significant gold mineralisation to be deposited. 2. Northe
Slide 9: Orogenic Gold Targets - Cowza Discovery
8 Orogenic Gold Targets Cowza Discovery! For personal use only ▪ High grade gold discovery mapped over 4.5 kilometres to date along the favourable mafic- intermediate contact.1 ▪ Hosted within a 4.5 kilometre de-mag zone. 1 ▪ Historic drilling focussed on ‘footwall’ mineralisation and never tested t
Slide 10: Orogenic Gold Targets - Cowza Discovery
9 Orogenic Gold Targets Cowza Discovery! For personal use only ▪ First hole drilled into the target primary gold zone:1 ▪ CZRC057: 41m @ 2.0g/t Au, incl 9m @ 7.5g/t Au ▪ Drilled underneath 8m @ 1.9g/t Au – demonstrates what oxide grade can turn into in fresh rock. ▪ Second hole received ~2km north (
Slide 11: Orogenic Gold Targets - Cowza Discovery
10 Orogenic Gold Targets Cowza Discovery! For personal use only ▪ A priority focus at the centre of the Cowza system where: ▪ the sheared mafic-intermediate contact flexures. ▪ It is further cut by multiple cross-cutting northeast- trending faults – where the high-degree of dilation would be likely
Slide 12: Orogenic Gold Targets - Celia South
11 Orogenic Gold Targets Celia South ▪ Potential northern extension of Cowza For personal use only ▪ Wide spaced reconnaissance drilling intersected over ~5km strike.1 ▪ Vindication of Gateway exploration methodology – regional drilling intersecting high-grade gold mineralisation in first-pass effor
Slide 13: Emerging District Scale Gold System
12 Emerging District Scale Gold System For personal use only ▪ Recent exploration drilling has successfully defined extensive zones of gold mineralisation across the Cowza, Celia South and Ward. ▪ Collectively, these prospects now comprise more than 13km of mineralised strike, hosted within a favour
Slide 14: Emerging District Scale Gold System
13 Emerging District Scale Gold System For personal use only
Slide 15: Orogenic Gold Targets - Haflinger region
14 Orogenic Gold Targets Haflinger region ▪ Multiple new targets generated from major For personal use only aircore program.1 ▪ Haflinger (priority) ▪ Hummer ▪ Rubicon ▪ Mustang ▪ Outstanding results received to date: ▪ MPAC0291: 64m @ 1.2g/t Au from 56m incl 24m @ 2.4g/t Au ▪ MPAC0262: 52m @ 1.4g/t
Slide 16: Orogenic Gold Targets - Horse Well (Current Resource Area)
Orogenic Gold Targets 15 Horse Well (Current Resource Area) ▪ Mineral resource estimates have been completed across Palomino, Warmblood, Bronco and Filly For personal use only Central. ▪ All resources are from surface and remain open down dip and plunge. ▪ Large portions of modelled mineralisation r
Slide 17: Project Overview
16 Project Overview ▪ 70km of prospective greenstone belt. For personal use only ▪ Orogenic Gold Targets ▪ Significant gold mineralisation based on four key factors: 1. Mafic-intermediate contact - creates the perfect rheological contrast for significant gold mineralisation to be deposited. 2. North
Slide 18: Au-Ag 'Splay Structure' Targets - Great Western
Au-Ag ‘Splay Structure Targets 17 Great Western ▪ Large scale gold-silver system defined by For personal use only drilling.1 ▪ Extensive BOH gold anomalism in intensely sheared dolerite. ▪ Unexpectedly, high grade BOH silver intersected along the shear corridor. ▪ Evidence of a very substantial hydr
Slide 19: Au-Ag 'Splay Structure' Targets - Great Western
Au-Ag ‘Splay Structure Targets 18 Great Western Cautionary Statement: Visual estimates of mineral abundance should never be considered a proxy or substitute For personal use only for laboratory analyses where concentrations or grades are the factor of principal economic interest. Visual estimates al
Slide 20: Great Western Shear Corridor
Au-Ag ‘Splay Structure Targets 19 Great Western Shear Corridor For personal use only ▪ Southern extension of the shear corridor that hosts Great Western.1 ▪ 12km strike of sheared mafic-intermediate contact (the key contact). ▪ First pass drilling intersected1 : ▪ PBAC0003: 12m @ 1.1g/t Au incl 3m @
Slide 21: Project Overview
20 Project Overview ▪ 70km of prospective greenstone belt. For personal use only ▪ Orogenic Gold Targets ▪ Significant gold mineralisation based on four key factors: 1. Mafic-intermediate contact - creates the perfect rheological contrast for significant gold mineralisation to be deposited. 2. North
Slide 22: Au-Ag 'Splay Structure' Targets - Dusk 'til Dawn
Au-Ag ‘Splay Structure Targets 21 Dusk ‘til Dawn For personal use only ▪ Extensive geophysical work has defined key intrusions.1 ▪ Alteration and large Au-Ag-Mo-Cu-Bi-Te geochemical trends coincident with intrusive features. ▪ Very large hydrothermal system. ▪ Peak results include:2 • 33m @ 3.6g/t A
Slide 23: Other Projects - Glenburgh South
22 Other Projects – Glenburgh South Strategic Acquisition in High Prospective location1 ▪ Adjacent to Benz Mining For personal use only Corp’s Tier 1 Gold Discovery - Glenburgh. ▪ Early signs of similar mineralisation. ▪ Repeat fault structures to the south of Glenburgh. ▪ Airborne magnetic survey c
Slide 24: Other Projects - Barrelmaker
23 Other Projects – Barrelmaker ▪ 80km of prospective strike within the Gum For personal use only Creek Greenstone Belt. ▪ Historic drill intercepts include1: ▪ 22m @ 2.3g/t Au ▪ 11m @ 4.5g/t Au ▪ Work has been undertaken in building the overall geological model across the project area, with a stron
Slide 25: Appendix A: Yandal Inferred Mineral Resource Estimates
24 Appendix A: Yandal Inferred Mineral Resource Estimates Prospect Tonnes (t) Au (g/t) Au (oz) Cut-off Palomino Pit 1,963,000 1.84 116,000 0.5 For personal use only Palomino UG 155,000 2.69 13,500 2.0 Palomino Total 2,118,000 1.90 129,500 - Warmblood 1,656,000 2.37 126,000 0.5 Filly 581,000 1.15 21,
Slide 26: Thank You - Contact Details
25 For personal use only Thank You Contact Details Level 4, 15 Ogilvie Road, Mount Pleasant WA 6153, Australia info@gatewaymining.com.au +61 8 6317 9875 www.gatewaymining.com.au