Slide 1: Major Discovery Underway
rsonal use only ASX: GML | DENVER GOLD CORPORATE PRESENTATION | SEPTEMBER 2026 Major Discovery Underway Yandal — building Australia's next multi-million-ounce gold camp 41m @ 2.0 g/t Au 13km+ 400koz Au incl. 9m @ 7.5 g/t Au. of mineralised strike on the Celia Inferred Mineral Resource — open Shear Z
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: Board & Management: The Team That Identified, Acquired and Advanced Yandal
BOARD & MANAGEMENT The Team That Identified, Acquired and Advanced Yandal rsonal use only 15+ years in the formation, financing and development of natural resources companies including Strickland Andrew Bray Metals, Silver Mines and Futura Resources. Former CEO of Strickland Metals (previous owner o
Slide 4: Corporate Summary
Corporate Summary CAPITAL STRUCTURE (as at 25 September) ASX Ticker GML rsonal use only Shares on issue 2,886,196,859 Options on issue1 90,676,083 Performance Rights (12.5c, 17.5c and 25c) 72,300,000 Cash and liquids2 $15.1M Placement Completed September Quarter3 $45M Share Price $0.076 Market Capit
Slide 5: Yandal Gold Project: Key Project Areas
YANDAL GOLD PROJECT Key Project Areas rsonal use only ▪ Within 50km of Northern Star’s Yandal Operations Centre. ▪ >400koz Au Mineral Resource Estimate.1 1. Refer to Appendix A for further details regarding Yandal Mineral Resource Estimate.
Slide 6: The Past Twelve Months: Foundations Laid, Targets Defined, Drilling Underway
THE PAST TWELVE MONTHS Foundations Laid, Targets Defined, Drilling Underway Since the Yandal acquisition and management change in mid-2025, Gateway has run a systematic, belt-scale exploration program rsonal use only WORK COMPLETED GML SHARE PRICE (A$) — JULY 2025 TO SEPTEMBER 2026 0.12 >160,000m 0.
Slide 7: Project Overview
Project Overview ▪ 70km of prospective greenstone belt. rsonal 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. Northeast tren
Slide 8: Cowza Discovery: First Hole Into the Primary Structure
COWZA DISCOVERY First Hole Into the Primary Structure rsonal use only 41m @ 2.0 g/t Au Incl. 9m @ 7.5 g/t Au from 105m CZRC057¹ • High-grade gold mapped over 4.5km along the favourable mafic–intermediate contact, hosted within a 4.5km de-mag zone. • Historic drilling focused on “footwall” mineralisa
Slide 9: Cowza Discovery: Oxide Grade Becomes Fresh-Rock Grade
COWZA DISCOVERY Oxide Grade Becomes Fresh-Rock Grade Aircore oxide mineralisation directly overlies a 40m-wide gold-mineralised shear zone rsonal use only 8m @ 1.9 g/t Au in oxide … becomes 41m @ 2.0 g/t Au in fresh rock directly beneath (CZRC057) — a demonstration of what oxide grade turns into at
Slide 10: Cowza Discovery: Thick, High-Grade Intercepts
COWZA DISCOVERY Thick, High-Grade Intercepts rsonal 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 to r
Slide 11: Celia Shear Zone: Emerging Gold System
CELIA SHEAR ZONE Emerging Gold System rsonal use only ▪ Cowza, Celia South and Ward prospects comprise of more than 13km of mineralised strike, hosted within a favourable sequence of mafic and intermediate volcanic rocks. ▪ Extensive oxide mineralisation is proven to be underpinned by high grade pri
Slide 12: Celia Shear Zone: Kilometres of Mineralised Strike on One Structure
CELIA SHEAR ZONE 13 Kilometres of Mineralised Strike on One Structure Repeated high-grade plunging lodes from Celia South through Cowza to Ward — large portions untested by deeper drilling rsonal use only Celia South · 1.5km Cowza · 4.5km Ward · 7km N S CELIA SOUTH1 COWZA2 WARD3 • CSAC0024 10m @ 2.2
Slide 13: Haflinger Region: A Second High-Grade Camp Taking Shape
HAFLINGER REGION A Second High-Grade Camp Taking Shape Multiple new targets generated from the major aircore program — Haflinger (priority), Hummer, Rubicon and Mustang rsonal use only OUTSTANDING RESULTS TO DATE1 64m @ 1.2 g/t Au MPAC0291 from 56m, incl. 24m @ 2.4 g/t Au 52m @ 1.4 g/t Au MPAC0262 f
Slide 14: Horse Well Gold Camp: The 400koz Resource Foundation
HORSE WELL GOLD CAMP The 400koz Resource Foundation Inferred Mineral Resources across Palomino, Warmblood, Filly, Bronco and Dusk 'til Dawn — all from surface, open down-dip and down-plunge Mineral resource estimates have been completed across rsonal use only ▪ Palomino, Warmblood, Bronco and Filly
Slide 15: Au–Ag Splay Structure Targets: Project Overview
AU–AG SPLAY STRUCTURE TARGETS Project Overview ▪ 70km of prospective greenstone belt. rsonal 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 b
Slide 16: Great Western: A Large Gold–Silver System, Barely Skimmed
AU–AG SPLAY STRUCTURE TARGETS Great Western — A Large Gold–Silver System, Barely Skimmed Golden Mile-style zonation: gold in the hot, ductile core; silver in the cooler, brittle halo ▪ Large scale gold-silver system defined by rsonal use only drilling.1 ▪ Extensive BOH gold anomalism in intensely sh
Slide 17: Great Western: Nuggets Galore!!
AU–AG SPLAY STRUCTURE TARGETS Great Western — Nuggets Galore!! Golden Mile-style zonation: gold in the hot, ductile core; silver in the cooler, brittle halo Cautionary Statement: Visual estimates of mineral abundance should never be considered a proxy or substitute rsonal use only for laboratory ana
Slide 18: Great Western South
AU–AG SPLAY STRUCTURE TARGETS Great Western South The southern extension of the shear corridor that hosts Great Western rsonal 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 i
Slide 19: Dusk 'til Dawn: A 109koz Resource With Intrusion-Related Upside
AU–AG SPLAY STRUCTURE TARGETS Dusk 'til Dawn — A 109koz Resource With Intrusion-Related Upside Extensive geophysics has defined key intrusions either side of the Celia Shear Zone — a very large hydrothermal system rsonal use only • Extensive geophysical work has defined the key Western and Eastern i
Slide 20: Beyond Yandal: Two More Gold Projects in WA
PORTFOLIO Beyond Yandal — Two More Gold Projects in WA Early-stage optionality across two additional Western Australian gold belts rsonal use only Glenburgh South Barrelmaker Strategic acquisition in a highly prospective location1 80km of prospective strike in the Gum Creek Greenstone Belt • Adjacen
Slide 21: Investment Case: Why Gateway, Why Now
INVESTMENT CASE Why Gateway, Why Now rsonal use only A district-scale position in the Yandal belt — 70km of prospective greenstone, 50km from Northern Star's Yandal Operations 1 Centre. Cowza: a high-grade fresh-rock discovery on a primary structure that historic drilling never tested — 41m @ 2.0 g/
Slide 22: Appendix A: Yandal Inferred Mineral Resource Estimates
APPENDIX A Yandal Inferred Mineral Resource Estimates rsonal use only TABLE NOTES Prospect Tonnes (t) Au (g/t) Au (oz) Cut-off (g/t Au) • Mineral Resources are based on JORC Code definitions as Palomino Pit 1,963,000 1.84 116,000 0.5 defined by the Australasian Code for Reporting of Exploration Resu
Slide 23: Thank You: Contact Details
23 rsonal 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