Sentinel Metals Limited · ASX:SNM
Sentinel Metals — Investor & Shareholder Webinar 12 August 2026
26 slides from Sentinel Metals's conference presentation, Aug 12, 2026
Slide 1: Unlocking the potential of the Columbia Gold & Silver Project – Montana, USA
Unlocking the potential of the Columbia Gold & Silver Project – Montana, USA 920koz gold Resource | Initial high-grade drilling success | Compelling growth opportunity ASX: SNM Investor & Shareholder Webinar | 12 August 2026 1
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: Sentinel Metals Board
SENTINEL METALS BOARD 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 • Geologi
Slide 4: Corporate Summary
CORPORATE SUMMARY CAPITAL STRUCTURE* OUR MISSION “ “ Shares on Issue 104.1 million To deliver long-term value to all stakeholders through the Share Price (11 August 2026) 58.0c Market Capitalisation $60.4 million development and production of high-quality advanced gold Cash (30 June 2026) $3.7 milli
Slide 5: Columbia Gold and Silver Project
COLUMBIA GOLD AND SILVER PROJECT COLUMBIA GOLD AND SILVER PROJECT STATE OF MONTANA CURRENT INFERRED JORC (2012) MINERAL AN ADVANCED EXPLORATION ASSET RESOURCE ESTIMATE (NOVEMBER 2024) 920,000oz Au at 1.34g/t Au Large Existing Resource with Significant Exploration Upside: JORC In addition to the MRE,
Slide 6: The Current Resource
THE CURRENT RESOURCE THE CURRENT RESOURCE TOP 5 NEAR-SURFACE HITS 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
Slide 7: 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 8: Columbia Section Example: 5200480N
COLUMBIA SECTION EXAMPLE: 5200480N COLUMBIA SECTION EXAMPLE: 5200480N WEST NORTH EAST Resource optimised at US$2,200/oz, leaving material upside of the planned Mineral Resource Estimate update 8
Slide 9: 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 9
Slide 10: Maiden Drill Program
MAIDEN DRILL PROGRAM • Drilling commenced in June 2026 • 21 HQ diamond drill holes in program • Targeting based on HSAMT, field structural mapping, grab sampling, drone EM surveys and clay zone recommendations from geological consultant Dr Greg Corbett • Drilling goals: ✓ Improve Resource confidence
Slide 11: Significant Results from First Hole
SIGNIFICANT RESULTS FROM FIRST HOLE • Maiden diamond drill-hole, DDC026-001, intersected: • 46.8m @ 5.5g/t Au from 88.2m, including: • 21.4m @ 11.1g/t Au from 97.6m; and • 13.5m @ 16.6g/t Au from 105.5m • High-grade zone bracketed by mineralisation: • 17.3m @ 1.1g/t Au from 88.2m • 16.0m @ 1.0g/t Au
Slide 12: Acquisition of The Big Springs Project, Nevada
Big Springs Acquisition of The Big Springs Project, Nevada
Slide 13: Transaction Summary
TRANSACTION SUMMARY COLUMBIA PROJECT COLUMBIA PROJECT A COMPELLING GROWTH STEP FOR SENTINEL METALS BIG SPRINGS BIG 20KM PROJECT SPRINGS PROJECT • Proposed acquisition of the Big Springs Gold Project in Nevada from Capricorn Metals Limited (ASX:CMM, “CMM”, or “Capricorn”) • High-grade 1Moz JORC Resou
Slide 14: Strategic Rationale
STRATEGIC RATIONALE CREATING A TIER-1 NORTH AMERICAN GOLD DEVELOPMENT PLATFORM Attractive Valuation: Sentinel is acquiring a mine-permitted 1Moz North American gold asset at an attractive price, reflecting its status as a non-core asset within Capricorn’s portfolio following CMM’s acquisition of War
Slide 15: Acquisition Terms
ACQUISITION TERMS BIG SPRINGS TRANSACTION ▪ Acquisition of 100% of the Big Springs Gold Project in Nevada (the “Project”) from Capricorn Metals Limited (“Capricorn Transaction Structure Metals”) (ASX:CMM) (the “Proposed Acquisition”) ▪ Includes all tenements, infrastructure, mining rights and suppor
Slide 16: Summary: Multiple Upcoming Catalysts
SUMMARY: MULTIPLE UPCOMING CATALYSTS CREATING A TIER-1 NORTH AMERICAN GOLD DEVELOPMENT PLATFORM September 2026 Quarter • Shareholder meeting to approve Big Springs acquisition and placement – 20 August 2026 • Completion of $15m placement and issue of shares • Ongoing drilling and assays from Columbi
Slide 17: Contact Us
ASX: SNM CONTACT US Managing Director info@sentinelmetals.com matthew.herbert@sentinelmetals.com www.sentinelmetals.com +1 807 358 6798 1 7
Slide 18: Appendix A
APPENDIX A APPENDIX A ASX:SNM 18
Slide 19: 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 20: 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 21: 2024 JORC Mineral Resource Estimate
2024 JORC MINERAL RESOURCE ESTIMATE 2024 JORC MINERAL RESOURCE ESTIMATE • The deposit model comprised 11 subvertical host structures within a 350m wide corridor over COLUMBIA PROJECT 2024 MRE BY DOMAIN a 2km strike zone Domain Tonnes Au Au Ag Ag AuEq1 (t) (g/t) (troy oz) (g/t) (troy oz) (g/t) • The
Slide 22: 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 23: Columbia Project Exploration Target
COLUMBIA PROJECT EXPLORATION TARGET COLUMBIA PROJECT EXPLORATION TARGET The Exploration Target is based on the results of exploration activities undertaken to date, including the drill hole database containing 319 reverse circulation holes and 24 diamond drill holes. The Exploration Target shells su
Slide 24: Drill Collars and Mineralisation Envelopes
DRILL COLLARS AND MINERALISATION ENVELOPES DRILL COLLARS AND MINERALISATION ENVELOPES DRILL COLLARS EXAMPLE MINERALISED DOMAINS EXAMPLE MINERALISED ENVELOPE 24
Slide 25: Foundation
FOUNDATION HIGH-GRADE +1MOZ JORC RESOURCE LOCATED ON A GRANTED MINING LEASE Big Springs 15.5Mt @ 2.0g/t for 1.01Moz Mining Lease BIG SPRINGS MINERAL RESOURCE Classification Tonnes Grade Contained Gold (Kt) (g/t Au) (troy Koz) Measured 860 4.7 129 Indicated 6,000 2.2 426 Inferred 8,630 1.7 459 Total
Slide 26: ASX: SNM
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