Announcement PDF ElizabethHillSilverProject One of Australia's highest grade silver projects ASX | WCE October 2025 2 Forward-Looking Statements Statements in this announcement which are not statements of historical facts, including but not limited to those relating to the proposed transaction, are forward-looking statements. These statements instead represent management's current expectations, estimates and projections regarding future events. Although management believes the expectations reflected in such forward-looking statements are reasonable, forward- looking statements are based on the opinions, assumptions and estimates of management at the date the statements are made and are subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. Accordingly, investors are cautioned not to place undue reliance on such statements. Competent Person Statement The information in this report that relates to Exploration Results reviewed by Mr Ian Stockton a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy and Fellow of the Australian Institute of Geologists (FAIG) and Registered Professional Geologist (RPGEO). Mr Stockton has sufficient experience that is relevant to the style of mineralisation and type of deposits under consideration and to the activity being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’, and a Specialist under the 2015 Edition of the‘Australasian Code for Public Reporting of technical assessments and valuations of mineral assets’. Mr Stockton consents to the inclusion in the report of the matters based on his information and in the form and context in which it appears. Cautionary Statement This document is confidential and may not be reproduced, redistributed or passed on, directly or indirectly. This document is neither a prospectus nor an offer to subscribe for fully paid ordinary shares. West Coast Silver Ltd (West Coast Silver) and its directors, employees and consultants make no representations or warranty as to the accuracy, reliability or completeness of this document, and have no liability, including liability to any person by reason of negligence of, or contained in or derived from, or for any omissions from this document, except liability under statute that cannot be excluded. This document contains reference to certain targets and plans of West Coast Silver which may or may not be achieved. The performance of West Coast Silver may be influenced by a number of factors, uncertainties and contingencies, many of which are outside the control of West Coast Silver and its directors, staff and consultants. Australia’s Largest Silver Nugget, 140kg found at Elizabeth Hill • “The Karratha Queen”largest native silver nugget 145kg from Elizabeth Hill, on display at The Perth Mint. • Measures an impressive 85 x 38 x 47cm. • Contains approximately 3,520 ounces of silver . Elizabeth Hill Silver Project Disclaimer 3 Price Performance1 Structural Market Deficit2 >US$50/oz Silver price is surpassing US$51.50/oz (Highest level of all time) Silver hits all-time high: Bull Market Momentum Building 2022 2023 2024 2025 112 Moz 125 Moz 139 Moz 149 Moz 149 Moz Silver deficit in 2025 (5th consecutive annual deficit) Demand Drivers: Industrial applications up 3.6% annually while mine supply falls 0.9%. Green energy transition requiring 700Moz additional industrial demand, with solar panels alone using 20g silver per panel. Market forecasts persistent tightness through 2026. In a constrained market hitting new highs, grade and speed to ounces are the key value drivers 1S&P Capital IQ Pro as at 10 October 2025. 2Silver Institute 1 • Historic head grade 2,194 g/t Ag (1.2Moz Ag from 16,830t)1 • Recent hits include 1m @ 15,071 g/t and 2m @ 10,049 g/t; native silver observed2 • Visible native silver in 25WCDD0112 • Simple historical gravity recovery demonstrated Exceptional grades that are rare on the ASX 2 3 • Granted ML in the Pilbara, past production paused on ~US$5/oz pricing (2000)1 • 180km2 consolidated land package on the Munni Munni Fault (proven control) • Established district; evaluating potential processing pathways in the region A restart-ready setting with scale to explore • Near-surface open-pit potential; open-pit quantification underway • Multiple priority near-mine targets; mineralisation open north & south • No modern regional exploration for 25 years; surface silver up to 490 g/t2; Bou Azzer analogue Open-pit potential now, multiple shots on goal next 1 WAMEX Annual Report, 1 April 2014 to 31 March 2015, Elizabeth Hill Silver Project, Global Strategic Metals NL, p16 2 Refer to West Coast Silver Ltd ASX announcements dated 16 July 2025 & 22 August 2025 3 Silver Institute Silver market tightness persists: Price rose above US$50/oz in October 2025; multi-year deficits continuing with industrial demand growth3 West Coast: Pure Play Silver Historic WA min on granted Mining Lease Bonanza-grade silver in Tier-1 WA Near-surface ounces anddistrict-scale upside Grade: Ground: Growth: 5 Historic WA Silver Mine in a Restart Ready Setting Elizabeth Hill Silver Project • Previously Australia’s highest grade historic silver mine - past production paused on ~US$5/oz pricing (2000); vs (vs ~US$48/oz today) • Located in the Pilbara region, Western Australia – consistently ranked highly for mining investment attractiveness by Fraser Institute • Operations on a granted Mining Lease (ML) – reducing time and permitting hurdles • 180 km2 consolidated land package providing extensive exploration upside • Positioned along the major Munni Munni Fault within a large ultramafic complex - a proven geological control hosting high-grade silver mineralisation and visible native silver Large Landholding in a Blue-Chip Mining District Processing Optionality Nearby processing facility offers potential future processing route, reducing capital intensity Excellent Infrastructure Access to road networks, power infrastructure, and skilled workforce in the established Pilbara mining region Elizabeth Hill Silver Project Processing Plant Ground • 12 holes where several returned bonanza grade mineralisation with highlights including 21m @ 1,047 g/t Ag in 25WCDD001 from 10m including 1m @ 15,071 g/t Ag from 27m; and 15m at 723g/t Ag in 25WCDD002 from 1m1 High Grade Mineralisation Proven Maiden Drilling Delivers: Strong Foundation for Growth • Shallow high-grade intercepts both recent and historical demonstrate open-pit mining potential - quantification of near-surface resource already underway • Historic intercepts inc 3.7m @ 6,953 g/t Ag from just13m depth1 Open-Pit Case Emerging from Shallow Bonanza Hits • Review of historic drilling has defined deeper PDH 13 & 14 targets testing down plunge mineralisation with intercepts of 2m @ 1,995g/t Ag at similar levels in historic drilling - to be tested in upcoming drilling campaign 1 Deep Targets Confirmed & Ready for Testing Growth 6 1Refer to West Coast Silver Ltd ASX announcements dated 16 July 2025 ,22 August 2025 & 9 October 2025 25WCDD011: 52.01-52.2m (SAMPLE 25WC04-015) – Silver-grey native silver1 Targeting deeper mineralisation 7 • Shallow high-grade intercepts demonstrate open-pit mining potential • Quantification of near-surface resource already underway • Historic intercepts include 3.7m @ 6,953 g/t Ag from just 13m depth1 • Recent drilling returned 21m @ 1,047 g/t Ag from 10m depth • Mineralisation open to north and south along the Munni Munni Fault • Historical high-grade intersections outside main deposit1: • 2m @ 1,550 g/t Ag from 108m in AMEHRC012 • 1m @ 250 g/t Ag from 118m in AG43 Near-Surface Open-Pit Potential Multiple High-Priority Near-Mine Targets Demonstrable Upside Potential 1 Refer to West Coast Silver Ltd ASX announcement dated 16 July 2025 & ASX announcement dated 22 August 2025 Growth 8 Elizabeth Hill Silver Project Systematic Growth Strategy Phase 1. Elizabeth Hill. (i) Near Surface Oxide Resource (ii) Deeper Targets Phase 2. Near mine high priority targets for repeat systems 4. 2026 targets Phase 3. Regional Targets Upcoming Value Catalysts: Strategic 3-Phase Exploration Underway November 2025 Early 2026 3. Regional Exploration • Advance near- surface oxide resource to JORC standard at Elizabeth Hill mine • Test down-plunge targets below the 02mRL level • Total drill program ~14 diamond holes (~1200m) • Test multiple high- priority near-mine targets with ~2,000– 3,000m of aircore, informed by ongoing drone magnetics • Open up the broader 180 km² package - most of which is underexplored - through comprehensive fieldwork 2. Near Mine 1. Elizabeth Hill Growth 9 Phase 1: Elizabeth Hill • Near surface oxide resource definition to JORC standards • Down Plunge exploration below of existing 102 level where mining ceased • ~14 holes for ~1200m of Diamond Drilling • Drill activities underway on site Elizabeth Hill Growth (Near Surface + At Depth): Refer Core Box Image: 25WCDD011: 49.68-53.28m – visible native silver and silver sulphide minerals (yellow circle) in coarse crystalline calcite-quartz vein. The vein is hosted in fine- to medium grained pyroxenite. The silver minerals are between 1mm and 2mm in size and comprise about 1% of the 20cm calcite-quartz vein, commencing at 52m. Growth 10 Elizabeth Hill Silver Project Phase 2: Near Mine • Systematic targeting: Integrated legacy data with soils, magnetic- structure deflections and historic drilling to generate multiple near- mine targets. • Drone magnetics + Loupe TEM underway (priority ranking revised as additional data become available). • Low cost ~2,000–3,000m aircore program starting early November to test shallow mineralisation across the Munni Munni “String of Pearls”. • The Goal is to find more Eliabeth Hill style systems i. Target repeat systems ii. Target shallow mineralisation, iii. generate more data to allow direct deeper drilling and/or iv. provide confidence to undertake more extensive geophysical programs Near Mine High Priority Targets – Aircore Program Growth 11 Elizabeth Hill Silver Project Phase 3: Regional Exploration • 180 km² tenure across the Munni Munni structural corridor - no systematic regional exploration in almost 25 years • 2026 program to involve comprehensive fieldwork campaign (mapping, soils, trenches) to bring district-scale prospects to drill-ready status • Geophysics underway: High-resolution drone magnetics and Loupe TEM to refine structures and detect conductive targets • Analogue is Bou Azzer (Morocco) - ultramafic-hosted Ag–Co–Ni–As systems; supports repeat high-grade targets • Target pipeline: Rank-and-advance workflow from geochem and geophysics to mapping, trenching, low-cost AC over multiple centres; escalate to RC/DD on best anomalies. • The goal is to identify repeat Elizabeth Hill–style systems along the Munni Munni Fault and parallel structures (“String of Pearls”). Regional Upside: Multiple New Shots on Goal Across an Underexplored 180km² Package Regional Exploration Regional Exploration Growth Path to Value: Near-Term Catalysts Driving Growth 12 • Core Review • Soil Sampling commenced on regional targets 75% completed • Re-assaying historical samples for additional elements • 12 hole DD programme • Targeting EH ore zone • Near Surface Material • Structural Understanding Site Works Commenced Inaugural Drilling Program • Investigations into near term processing and production opportunities Near term production opportunities • Proven High Grade • Proven Shallow Mineralisation • Open Pit Potential Assays Received • 14 (~1200m) holes at Elizabeth Hill • Define initial shallow open-pit potential • Testing of deeper mineralised targets Phase 2 Diamond Program Upcoming news flow and catalyst next 3 months • 2000-3000m air core program on high priority near mine targets • Targeting repeat Elizabeth Hill Systems along the“String of Pearls” Near Mine Air Core Program • Mapping of high priority targets • Air Core Drilling Regional Exploration Completed to date 13 Capital Structure Share Performance Elizabeth Hill Silver Project Note: As of 10 October 2025. See Appendix A for details on Options and Performance Rights. ASX: WCE Value Shares on issue 327,640,295 Share Price A$0.19 Market Capitalisation A63m Estimated cash (30 Sep 2025) A$5m Implied Enterprise Value A$57m Corporate Overview Ownership Structure Note: As of 10 October 2025. Board & Management Mr Bruce Garlick EXECUTIVE CHAIRMAN Mr Garlick is a finance and governance professional with experience in nickel, copper, lead, and PGM operations. He is a Non-Executive Director of Artemis Resources (ASX: ARV). Mr Thomas Reddicliffe NON-EXECUTIVE DIRECTOR Mr Reddicliffe is a geologist with over 40 years’Australian exploration experience. He chairs GreenTech Metals (ASX: GRE) and is a Non-Executive Director of Gibb River Diamonds (ASX: GIB). Mr Matt Birney NON-EXECUTIVE DIRECTOR Mr Birney, Founder & MD of Bulls N’Bears, has advised 450+ ASX companies; a former WA Opposition Leader and first Liberal Member for Kalgoorlie, he has chaired two ASX companies and co- founded multiple ventures. Note: WCE has a 70% interest with Alien Metals (JV partner); 30% interest being free carried through to decision to mine, 24-Mar-25 Elizabeth Hill Acquisition >5x return pre-acquisition 0 2 4 6 8 10 12 14 0.00 0.05 0.10 0.15 0.20 0.25 0.30 Mar-25 Apr-25 May-25 Jun-25 Jul-25 Aug-25 Sep-25 Oct-25 Volume (m) Millions Share Price (A$/sh) Volume Share Price 14 1 WAMEX Annual Report, 1 April 2014 to 31 March 2015, Elizabeth Hill Silver Project, Global Strategic Metals NL, p16 2Refer to West Coast Silver Ltd ASX announcements dated 16 July 2025 & 22 August 2025t West Coast Silver Investment Summary High-grade silver in a Tier-1 jurisdiction, with a clear path to near-term value GRADE Bonanza Confirmed GROUND De-risked Setting • Historic head grade: 2,194 g/t Ag (1.2 Moz)1 • Recent hits: up to 15,071 g/t Ag; visible native silver2 • Continuity: Near-surface, open- pit potential GROWTH Multiple Shots on Goal • Granted ML: Pilbara, on Munni Munni Fault • Scale: 180 km² with established infrastructure • Optionality: Nearby processing routes; Tier-1 WA jurisdiction 3-Phase Strategy : Near-surface → Near-mine → Regional MACRO TAILWIND Silver at a 14-year high with multi-year supply deficits — premium for grade + speed to ounces. US$51.50/oz +58% YTD UPCOMING CATALYSTS (NEXT 3–6 MONTHS) • Results from diamond drilling at Elizabeth Hill – assays expected Q4 2025 • Down Plunge DD on near-mine targets – assays expected Q4 2025 • Aircore on near-mine targets – assays expected Dec 2025/Jan 2026 THE TAKEAWAY Grade × Ground × Growth = leverage to the silver upcycle with near-term, repeatable catalysts • Phase 1 Resource quantification & down-plunge targets • Phase 2: Near-mine “String of Pearls” (~2–3 km aircore, Nov start) • Phase 3: Regional scale-up (180 km², early 2026) Contact ASX | WCE One of Australia’s highest-grade silver projects Elizabeth Hill westcoastsilver.com.au Bruce Garlick Executive Chairman +61 437 393 6000 info@westcoastsilver.com.au Investor & Media Relations Dannika Warburton - Investability +61 401 094 261 westcoastsilver@investability.com.au 16 Options & Performance Rights Number of securities Unlisted Options exercisable at $0.25 each expiring on or before 30 November 2025 1,500,000 Unlisted Options exercisable at $0.40 each expiring on or before 21 April 2026 2,000,000 Unlisted Options exercisable at $0.18 each expiring on or before 30 October 2026 3,525,000 Unlisted Options exercisable at $0.117 each expiring on or before 25 November 2025 1,200,000 Unlisted Options exercisable at $0.04 each expiring on or before 18 May 2028 11,000,000 Unlisted Options exercisable at $0.04 each expiring on or before 20 May 2028 3,000,000 Unlisted Options exercisable at $0.12 each expiring on or before 30 July 2027 100,000 Unlisted Options exercisable at $0.12 each expiring on or before 23 March 2027 5,000,000 Unlisted Options exercisable at $0.20 each expiring on or before 23 September 2027 5,000,000 Unlisted Options exercisable at $0.155 each expiring on or before 23 September 2028 10,000,000 Performance Rights Class B expiring on or before 21 April 2027 5,000,000 Performance Rights expiring on or before 18 May 2028 10,000,000 Appendix A: Options and Performance Rights As at 7 October 2025 Drone magnetic survey