Sentinel Metals Limited · ASX:SNM
Sentinel Metals — Euroz Hartleys Rottnest Conference 2026
22 slides from Sentinel Metals's conference presentation, March 2026
Slide 1: Developing the advanced Columbia Gold Project in Montana, USA
Developing the advanced Columbia Gold Project in Montana, USA Large-scale resource, immediate exploration upside, near-term development potential ASX: SNM Euroz Hartleys Rottnest Conference | March 2026
Slide 2: Disclaimer
DISCLAIMER DISCLAIMER Disclaimer and Forward-Looking Statements information relating to the estimate included in the Prospectus and that all material assumptions and technical parameters underpinning the estimate in the Prospectus continue to apply and have not materially • This presentation (Presen
Slide 3: Board
BOARD MARK WILLIAMS MARK WILLIAMS MATT HERBERT SIMON DAHROUGE ADAM RITCHIE NON-EXECUTIVE CHAIR MANAGING DIRECTOR EXECUTIVE DIRECTOR INDEPENDENT NON- AND CO FOUNDER AND CO FOUNDER AND CO FOUNDER EXECUTIVE DIRECTOR • Former MD of Red 5 Ltd (ASX:RED) for • Geologist with a metals and mining • Geologist
Slide 4: Corporate Summary and Our Mission
CORPORATE SUMMARY CAPITAL STRUCTURE OUR MISSION “ “ Shares on Issue 104.1 million To deliver long-term value to all stakeholders through the Share Price (at 13 March 2026) 57c Market Capitalisation $59.4 million development and production of high-quality advanced gold Cash (at 31 December 2025) $7.0
Slide 5: Columbia Gold Project
COLUMBIA GOLD PROJECT COLUMBIA GOLD PROJECT STATE OF MONTANA CURRENT INFERRED JORC (2012) MINERAL RESOURCE ESTIMATE (NOVEMBER 2024) Existing JORC Resource of 920,000oz Au at 1.34g/t Au Large Existing Resource with Significant Exploration Upside: Existing JORC (2012) MRE containing 920,000oz Au at 1.
Slide 6: The Current Resource
THE CURRENT RESOURCE THE CURRENT RESOURCE ELEVEN RESOURCE DOMAINS OPEN • 3.1m at 106.3 g/t Au from 33.5m (DC-009) • 3.1m at 72.0 g/t Au from 45.7m (7UP-247A) • 12.2m at 11.6 g/t Au from 1.5m (PD-90-166) • 12.2m at 9.7 g/t Au from 48.8m (PD-90-128) • 28.9m at 3.9 g/t Au from 3.0m (COL12-001) • 132.6m
Slide 7: Resource Growth Potential
RESOURCE GROWTH POTENTIAL RESOURCE GROWTH POTENTIAL INDEPENDENT EX PLORATION TARGET1 Tonnes (Mt) Grade Au (g/t) Au (Koz) Defined within a 350m wide corridor of up to 2km strike length to an average depth of ~220m below surface Low High Low High Low High 22 27 1.1 1.4 800 1,200 ELEVEN RESOURCE DOMAIN
Slide 8: Geophysics Targets
GEOPHYSICS TARGETS Historical Drilling Extent Deep Conductive Target Alteration Core Pathways Proto Heat Source 100m HSAMT Voxel Model overlain by 50m Voxel Model HSAMT highlights a deep conductive zone and overlying vertical breaks interpreted as potential structural and hydrothermal pathways. Thes
Slide 9: Columbia Section Example: 5200480N
COLUMBIA SECTION EXAMPLE: 5200480N COLUMBIA SECTION EXAMPLE: 5200480N WEST NORTH EAST ASX:SNM 9
Slide 10: Columbia Section Example: 5200600N
COLUMBIA SECTION EXAMPLE: 5200600N WEST NORTH EAST ASX: SNM 10
Slide 11: Convergence Zone Targets
CONVERGENCE ZONE TARGETS Vein Trace Convergence Zone Vein Trace Convergence Zone Projected vein traces converge at depth along interpreted structures, defining priority targets for feeder-style mineralization beneath historical drilling ASX:SNM 11
Slide 12: Maiden Drill Program
MAIDEN DRILL PROGRAM • 21 new HQ drill holes totalling 5,000m • Based on HSAMT, field structural mapping, grab sampling, drone EM surveys and Dr Greg Corbett’s clay zone recommendations • Target testing goals: ✓ Improve Resource confidence ✓ NW strike extension ✓ Extend isolated Western mineralisati
Slide 13: Montana News
MONTANA NEWS • Krista Lee Evans appointed as Vice President of Government and Community Relations • Strategic in-country appointment strengthens critical areas of community, government and regulatory engagement for the Columbia Gold Project • Newly created role supports the Company’s commitment to r
Slide 14: Since IPO
SINCE IPO Water table and historical baselining archives have been updated and restarted, supported by 5 years of historical water data Full data-room and database remodel is complete – 6 new holes found whose core assays are expected in March. Geophysics complete Core shed remodel and pulp and core
Slide 15: Contact Us
ASX: SNM CONTACT US Managing Director info@sentinelmetals.com matthew.herbert@sentinelmetals.com www.sentinelmetals.com +1 807 358 6798
Slide 16: Appendix A: Geology and Resource Detail
APPENDIX A GEOLOGY AND RESOURCE DETAIL
Slide 17: Montana is the Treasure State
MONTANA IS THE TREASURE STATE STATE OF MONTANA 150+ Significant mining legacy, with its first years major gold discovery in 1852 LIBBY EXPLORATION PROJECT BLACK BUTTE A state rich in gold, silver, copper and ROCK CREEK COPPER PROJECT UNITED STATES OF AMERICA PGM deposits – ranked 23rd globally PROJE
Slide 18: Historical Technical Work
HISTORICAL TECHNICAL WORK MORE THAN 300 TEN BULK SAMPLES 96% TOTAL COMPOSITE SAMPLES TESTED OF BETWEEN FIVE AND TEN TONNE EACH RECOVERIES FROM GRAVITY + FLOTATION SIGNIFICANT BODY GRAVITY AND FLOTATION EXCAVATED FROM COMBINED FLOWSHEET TESTS COMPLETED TRENCHES FOR BENCH- TESTS ACHIEVED UP TO OF HI
Slide 19: 2024 JORC Mineral Resource Estimate
2024 JORC MINERAL RESOURCE ESTIMATE 2024 JORC MINERAL RESOURCE ESTIMATE • The deposit model comprised 11 subvertical COLUMBIA PROJECT 2024 MRE BY DOMAIN host structures within a 350m wide corridor over Domain Tonnes Au Au Ag Ag AuEq1 a 2km strike zone (t) (g/t) (troy oz) (g/t) (troy oz) (g/t) 7UP-20
Slide 20: JORC Mineral Resource Estimate
JORC MINERAL RESOURCE ESTIMATE JORC MINERAL RESOURCE ESTIMATE Information regarding metal equivalents • The MRE is constrained within a US$2,200 / Au oz optimised shell and COLUMBIA PROJECT 2024 MRE BY CLASSIFICATION above a 0.4865g/t AuEq cut-off grade • The MRE has been optimised and reported usin
Slide 21: Drill Collars and Mineralisation Envelopes
DRILL COLLARS AND MINERALISATION ENVELOPES DRILL COLLARS AND MINERALISATION ENVELOPES DRILL COLLARS EXAMPLE MINERALISED DOMAINS EXAMPLE MINERALISED ENVELOPE ASX:SNM 21
Slide 22: ASX: SNM
YY SENTINEL METALS
Sentinel Metals — Euroz Hartleys Rottnest Conference 2026 on 6ix