Announcement PDF WEST COAST SILVER LIMITED ASX | WCE ACN: 155 472 834 REGISTERED OFFICE Level 2, 10 Ord Street West Perth, WA 6005 PO Box 1227, West Perth WA 6872, Australia info@westcoastsilver.com.au +61 8 9322 3383 westcoastsilver.com.au ASX:WCE ANNOUNCEMENT 3 March 2026 RC Drilling to Expand High-Grade Elizabeth Hill Silver System • 4,000m Reverse Circulation (RC) drilling program commencing March 2026 • Targets Elizabeth Hill North and South along the Munni Munni Fault (MMF) • Drilling to test extensions of high-grade mineralisation identified in 2025 drilling, including bonanza-grade silver intersections1 • All targets within ~150m of surface – potential for low-cost resource growth • Program designed to support inaugural Mineral Resource Estimate (Q3/4 2026) • RC drilling contract executed West Coast Silver Limited (ASX: WCE) (‘West Coast Silver’or the‘Company’) is pleased to announce a 4,000m Reverse Circulation (RC) drilling program at its flagship Elizabeth Hill Silver Project in the Pilbara, Western Australia, designed to expand the footprint of high-grade silver mineralisation and support a maiden Mineral Resource Estimate in Q3/4 2026. This program is designed to expand the footprint of high-grade silver mineralisation at Elizabeth Hill. Drilling will target extensions adjacent to the historic high-grade mine and newly identified structural corridors along the Munni Munni Fault (MMF), which is the primary control on mineralisation. The program will specifically test extensions of mineralisation north and northwest of recent 2025 diamond drilling results, as well as along the MMF at Elizabeth Hill North (EHN) and Elizabeth Hill South (EHS), where previous drilling intersected moderate to high-grade silver mineralisation. All targets are located within approximately 150m of surface, highlighting the potential for rapid and cost-effective resource growth. The drilling program has been designed to extend known mineralisation along strike and at depth and to support the delivery of an inaugural Mineral Resource Estimate targeted for Q3/4 2026. 1 Refer WCE ASX Announcement “Bonanza Silver Hits at Elizabeth Hill” dated 4 February 2026 Highlights ASX:WCE ANNOUNCEMENT 3 March 2026 WEST COAST SILVER LIMITED ASX | WCE Page 2 The RC drilling contract has been awarded to NexGen Drilling Pty Ltd, with drilling expected to take approximately four to six weeks, subject to weather and operational conditions. Assay results are anticipated to be received progressively during Q2 2026. Commenting on the results, Executive Chairman Bruce Garlick said: “WCE’s diamond and aircore drilling programs have confirmed that the structural system hosting silver mineralisation at Elizabeth Hill extends significantly beyond the boundaries of the historic mine. The identification of multiple near-mine targets supports our view that Elizabeth Hill represents part of a larger silver mineralised system along the Munni Munni Fault. This RC program is designed to expand the known strike and depth extents of the deposit, test new targets at Elizabeth Hill North and South, and deliver the systematic drilling required to support the first Elizabeth Hill Mineral Resource Estimate scheduled to be completed in Q3/4 2026. With all targets shallow and proximal to existing infrastructure, success would position the Company strongly for rapid resource growth and a clear pathway to development.” Next Steps Drilling is scheduled to commence in March 2026, with results expected during Q2 2026. Outcomes from the program will be incorporated into the geological model and will support delivery of an inaugural Mineral Resource Estimate targeted for Q3/4 2026. Figure 1: NexGen Drilling RC Drill ASX:WCE ANNOUNCEMENT 3 March 2026 WEST COAST SILVER LIMITED ASX | WCE Page 3 The Elizabeth Hill Project Elizabeth Hill is one of Australia’s high-grade silver projects and has a proven production history. Key points are outlined below: • High grades enabled low processing tonnes. A total of 1.2 Moz of silver was produced from just 16,830t of ore at a head grade of 2,194g/t (70.5 oz/t Ag)2 . • Mining operations ceased in 2000 as a result of low silver prices (US $5)3 . • Simplistic historic processing techniques were used focussing only on native silver extraction. Native silver was recovered via low-cost gravity separation techniques. • Untapped mineral resource expansion potential remains. The Elizabeth Hill deposit remains open at depth and along strike. Recent consolidation of the WCE tenement land holding offers potential to discover more Elizabeth Hill style deposits near mine and regionally. • World leading silver grades located on a mining lease with potential processing option at the nearby Radio Hill site. Figure 2: Tenement Location Through the consolidation of surrounding land packages into a single contiguous 180km2 package, significant exploration and growth potential has been created near mine and regionally. The land package holds a significant portion of the Munni Munni fault system, and other fault systems subparallel to the Munni Munni fault system, which are considered prospective for Elizabeth Hill silver deposit analogues. 2 WAMEX Annual Report,1 April 2014 to 31 March 2015, Elizabeth Hill Silver Project, Global Strategic Metals NL, p16 3 www.kitco.com/charts/silver ASX:WCE ANNOUNCEMENT 3 March 2026 WEST COAST SILVER LIMITED ASX | WCE Page 4 This ASX announcement has been authorised for release by the Board of Directors of West Coast Silver Limited. For further information, please contact: Bruce Garlick Executive Director West Coast Silver Limited E: info@westcoastsilver.com.au Competent Person Statement The information in this announcement that relates to Exploration Results is based on information reviewed by Mr Tony Donaghy who is a Registered Professional Geoscientist with the Association of Professional Geoscientists of Ontario, an RPO. Mr Donaghy is a consultant to West Coast Silver and a full-time employee of ERM Australia Consultants Pty Ltd. Mr Donaghy 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 Joint Ore Reserves Committee (JORC) ‘Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves’, and a Specialist under the VALMIN Code 2015 Edition of the ‘Australasian Code for Public Reporting of Technical Assessments and Valuations of Mineral Assets’. Mr Donaghy consents to the inclusion in the announcement of the matters based on this information and in the form and context in which it appears. 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. 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 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 the Company and its directors, staff and consultants.