Announcement PDF Appendix 3Z Final Director’s Interest Notice + See chapter 19 for defined terms. 11/3/2002 Appendix 3Z Page 1 Rule3.19A.3 Appendix 3Z FinalDirector’sInterestNotice Information or documents not available now must be given to ASX as soon as available. Information and documents given to ASX becomeASX’spropertyandmaybemadepublic. Introduced30/9/2001. Nameofentity WestCoastSilverLimited(previouslyknownErrawarraResourcesLtd) ABN 95155472834 We(theentity)giveASXthefollowinginformationunderlistingrule3.19A.3andasagentforthedirectorforthepurposes ofsection205GoftheCorporationsAct. Nameofdirector RobertMosig Dateoflastnotice 31July2025 Datethatdirectorceasedtobedirector 16October2025 Part1–Director’srelevantinterestsinsecuritiesofwhichthedirectoristheregisteredholder Inthecaseofatrust,thisincludesinterestsinthetrustmadeavailablebytheresponsibleentityofthetrust Note:Inthecaseofacompany,interestswhichcomewithinparagraph(i)ofthedefinitionof“notifiableinterestofadirector”shouldbedisclosedinthispart. 1,000,000ordinaryshares 1,250,000unlistedoptionsexercisableat$0.04onorbefore18May2025. Part2–Director’srelevantinterestsinsecuritiesofwhichthedirectorisnottheregisteredholder Note:Inthecaseofacompany,interestswhichcomewithinparagraph(ii)ofthedefinitionof“notifiableinterestofadirector”shouldbedisclosedinthispart. Inthecaseofatrust,thisincludesinterestsinthetrustmadeavailablebytheresponsibleentityofthetrust Nameofholder&natureofinterest Note:Providedetailsofthecircumstancesgivingrisetotherelevantinterest Number&classofsecurities Nil Appendix 3Z Final Director’s Interest Notice + See chapter 19 for defined terms. Appendix 3Z Page 2 11/3/2002 Part3–Director’sinterestsincontracts Detailofcontract N/A Natureofinterest N/A Nameofregisteredholder (ifissuedsecurities) N/A No.andclassofsecuritiestowhich interestrelates N/A Date: 16October2025