Gateway Mining Limited · ASX:GML
Gateway Mining — RIU Sydney Resources Round-up 2026
25 slides from Gateway Mining's conference presentation, May 2026
Slide 1: Unlocking the next multi million-ounce gold system across the Yandal Greenstone Belt
1 Unlocking the next multi million-ounce gold system across the Yandal Greenstone Belt RIU Sydney Resources Round-up Presentation May 2026 Richard Pugh, Chief Executive Officer 1
Slide 2: 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 3: Highly Successful and Experienced Leadership Team
3 Highly Successful and Experienced Leadership Team ▪ +15 years experience in formation, financing and development of natural resources companies, including Andrew Bray Strickland Metals Ltd, Silver Mines Ltd, Futura Resources Ltd, amongst others. Executive Chairman ▪ Former Chief Executive Officer
Slide 4: Corporate Summary
4 Corporate Summary CAPITAL STRUCTURE (as at 03 May) ASX Ticker GML Shares on issue 2,322,814,859 Options on issue1 91,558,083 Performance Rights (12.5c, 17.5c and 25c) 60,750,000 Cash and liquids2 $21.3M Share Price $0.068 Market Capitalisation ~$158M 1. 71,558,083 options expiry 15/12/2026 at $0.0
Slide 5: A busy nine months…
5 A busy nine months… ........but we’re only just getting started Completion of Key Mineralised Acquisition of Trends Identified High Grade Gold Large gold nugget Major Drilling Emerging Gold Shallow High- Yandal Gold across Yandal Samples at Great haul at Great Programs System at New Hummer Grade R
Slide 6: Project Overview
6 Project Overview ▪ 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: Project Overview
7 Project Overview ▪ 70km of prospective greenstone belt. ▪ Current resource base spans 3km of strike, >60km remaining largely untested. ▪ Historic exploration focused purely on central Celia Shear structure. ▪ Only 26% of historic drilling reaches depths greater than 100m deeming historic explorati
Slide 8: Key Target Areas
8 Key Target Areas Priority regional target zones have potential for major discoveries ▪ Great Western ▪ Mustang ▪ Dusk ‘til Dawn
Slide 9: Great Western
9 Great Western High priority splay corridor with gold anomalism previously untested by drilling ▪ Drilling by previous holder targeted the intrusion itself – no follow up. ▪ Extremely strong Mo-Bi-Te anomalism remained unexplained. ▪ Mafic-intermediate contact. ▪ Significant structural complexity –
Slide 10: Great Western
10 Great Western High priority splay corridor with gold anomalism previously untested by drilling ▪ GML soil sampling and lag sampling identified key gold trends.1 ▪ Follow-up prospecting activities have returned over 1,000 gold nuggets around the margin of the Great Western Intrusion.2 ▪ Drilling i
Slide 11: Great Western
11 Great Western Confirmation of significant gold mineralisation Cautionary Statement: Visual estimates of mineral abundance should never be considered a proxy or substitute for laboratory analyses where concentrations or grades are the factor of principal economic interest. Visual estimates also po
Slide 12: Key Target Areas
12 Key Target Areas Priority regional target zones have potential for major discoveries ▪ Great Western ▪ Mustang ▪ Dusk ‘til Dawn
Slide 13: Mustang
13 Mustang Analogous Horse Well camp identified at Mustang ▪ Multielement geochemistry by GML accurately mapped key lithologies. ▪ Same contact position immediately to the south hosts high grade mineralization across Horse Well. ▪ Historic BOH +0.1g/t Au identified in old RAB and aircore drilling1 –
Slide 14: 1. Refer to ASX announcement dated 4 May 2026.
14 1. Refer to ASX announcement dated 4 May 2026.
Slide 15: Mustang
Mustang 15 Large Scale Emerging Gold System ▪ Aircore drilling highlighting an emerging, extensive gold system. ▪ Multiple areas requiring tighter-spaced follow-up drilling. • First significant discoveries – • Haflinger: 52m @ 1.4g/t Au.¹ • Hummer: 16m @ 1.0g/t Au.² • Rubicon: 16m @ 1.0g/t Au.³ • Mu
Slide 16: Mustang
Mustang 16 Large Scale Emerging Gold System ▪ Historic drilling deemed ineffective under areas of cover. ▪ Exploration strategy by GML is effectively testing these primary mineralized structures. ▪ >60km project remaining largely untested.
Slide 17: Key Target Areas
17 Key Target Areas Priority regional target zones have potential for major discoveries ▪ Great Western ▪ Mustang ▪ Dusk ‘til Dawn
Slide 18: Dusk 'til Dawn
Dusk ‘til Dawn 18 Advanced gold targets – potential for major discovery ▪ Extensive geophysical work has defined key intrusions.1 ▪ Alteration and large Au-Mo-Cu-Bi-Te geochemical trends coincident with intrusive features. ▪ Very large hydrothermal system. ▪ RC drilling planned to test extensions to
Slide 19: Horse Well Mineral Resources
Horse Well 19 Mineral Resources
Slide 20: Horse Well Mineral Resources
Horse Well 20 Mineral Resources ▪ Mineral resource estimates have been completed across Palomino, Warmblood, Bronco and Filly Central. ▪ All resources are from surface and remain open down dip and plunge. ▪ Large portions of modelled mineralisation remains ‘unclassified’ and is excluded from MREs: ▪
Slide 21: Other Projects – Glenburgh South
21 Other Projects – Glenburgh South Strategic Acquisition in High Prospective location1 ▪ Adjacent to Benz Mining Corp’s Glenburgh Project. ▪ Early signs of similar mineralisation. ▪ Repeat fault structure to the south of Glenburgh. ▪ Airborne magnetic survey completed2 with surface sampling and geo
Slide 22: Other Projects – Barrelmaker
22 Other Projects – Barrelmaker ▪ 80km of prospective strike within the Gum Creek Greenstone Belt. ▪ Historic drill intercepts include1: ▪ 22m @ 2.3g/t Au ▪ 11m @ 4.5g/t Au ▪ Systematic exploration work is ongoing and includes lithogeochemistry of existing drill samples to better understand the cont
Slide 23: Summary
23 Summary Key Takeaway ▪ Fully funded explorer with a pipeline of high priority exploration targets. ▪ Drastically underexplored Tier 1 greenstone belt, that is host to numerous deposits ranging from +1Moz to +10Moz Au. ▪ Within 50km of Northern Star’s Yandal Operations Centre. ▪ Discovery of four
Slide 24: 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 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 21,500 0.5 Bronco 324,000
Slide 25: Thank You
25 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