Announcement PDF ASX: LGM ASX Announcement 13 May 2026 Page 1 of 10 | ABN 43 650 398 897 12/217 Howick St, Bathurst, 2795 www.legacyminerals.com.au New Silver-Gold & Copper Drill Program to Commence at Mt Carrington Government Approvals received for 8,000m of drilling at Emu and Mascotte Prospects, focusing on new discoveries Legacy Minerals Holdings Limited (ASX: LGM, “LGM”, “the Company” or “Legacy Minerals”) is pleased to advise that it has received two further NSW Government drilling approvals across its flagship Mt Carrington Project in NSW (EL6273, EL9616, EL9727, ALA75). Mascotte Phase 2: Approval to Step Out and Test Depth Extensions • Approval has been received from the NSW Government for eight additional diamond drillholes at the Mascotte silver-gold Prospect. • Each hole in the Phase 2 program is up to 500m depth, for a total of 4,000m, specifically targeting structural and geochemical extensions from previous intercepts, includingi : o 40m at 1.0g/t Au from 151m, including:  9m at 2.7g/t Au from 180m; o 18.3m at 237g/t Ag from 3m, including 9.1m at 394g/t Agii . • The Phase 2 program steps out the maiden Phase 1 program of 1,841m of drilling across eight drillholes, which was completed on 30th March 2026. • Assays are pending for seven holes, and the initial hole (MSDD001) uncovered a new discovery with significant gold and silver grades, up to 5.6g/t Au and 72g/t Agiii . Modern Drill Test of the Emu Porphyry-Epithermal Target • Approval has been received from the NSW Government for eight diamond drillholes at the Emu Copper-Gold Prospect. • The approved program of eight diamond drillholes for a total of 4,000m is designed to be the first modern drill test of the Emu Porphyry Core and Emu Alteration Halo SE Targets. These targets have been interpreted from the airborne geophysics program as discrete porphyry-epithermal targets within the Mt Carrington caldera. • The Emu Prospect is one of three high-priority regional targets within the broader 1.2Moz AuEqiv (115Moz AgEqv ) Mt Carrington Project that have been highlighted by the recently completed airborne Mobile MT survey, alongside Mascotte and Battery. Next Steps - Resource Growth & New Discovery Focus • The Mt Carrington Mineral Resource with both Mascotte and Emu offering clear potential to expand the existing Resource through new discoveries. • Sampling of the remaining drillholes from the Mascotte Phase 1 program (1,624m, seven holes) is completed, with full assays expected in June 2026 due to extended delays at the laboratory. • The Company is working on optimising the Mt Carrington Scoping Study with resources outside the study and revised processing pathways, indicating a significant opportunity. • Drill rig is to be mobilised this month with drilling expected to be completed progressively over the next 3 months with further follow-up and resource drilling planned. Page 2 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Management Comment Legacy Minerals CEO & Managing Director, Christopher Byrne said: “Legacy Minerals is continuing our gold, silver, and copper exploration and discovery-focused approach across the Mt Carrington Project. This follows the recently released Scoping Study, which demonstrates the compelling financials of the Mt Carrington Project as a significant Australian gold and silver asset. These two new drilling approvals at Mascotte and Emu, totalling 8,000 meters, represent new discovery opportunities on the Project as part of this dual-track strategy of discovery and development. With Phase 1 drilling already completed and drilling assays pending at the Mascotte silver-gold Prospect, the Phase 2 approval allows us to drill follow-up holes, immediately stepping out from and below the highest-grade historical silver intercepts. These results included shallow high-grade silver results, such as 18.3m at 237g/t Ag from 3m, and the newly discovered gold zone, 40m at 1.0g/t Au from 151m. In addition to high-grade gold and silver across the Project, there is also substantial untested copper potential. This is demonstrated by historical drill results, including drilling at the Mt Carrington Prospect delivering 18.9m at 5.8% Cu from 58m, and further down the same drill hole, 10.1m at 7.26% Cu from 88m5F5F vi . Copper is the primary target of the Emu Prospect, with widespread copper recognised across the target zone and mined historically. Our team has been integrating historical geological data with recent airborne Mobile MT geophysics with compelling results across porphyry-epithermal targets last drilled 50 years ago. Two distinct features, the Emu Porphyry Core and the Emu Alteration Halo SE, sit along the same caldera-margin trend that hosts the existing Mt Carrington MRE. The Phase 1 Mascotte program assays are expected to deliver complete assays in June 2026, with Emu drilling mobilisation planned for this month. Scoping Study optimisation work is continuing in parallel, and we look forward to keeping shareholders updated on the outcomes of this high-impact work.” Figure 1. Mt Carrington Project Geology and Planned Drilling for 2026 targeting greenfields and brownfields silver, gold, and copper targets. Page 3 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Regional Context – Mt Carrington Caldera Both the Mascotte and Emu Prospects sit within the large-scale (~150km²) Mt Carrington caldera, which hosts a series of low-sulphidation epithermal Au-Ag-Cu-Pb-Zn deposits collectively comprising the existing 115Moz AgEq (1.2Moz AuEq) Mt Carrington Mineral Resourceiii . Recent Mobile MT inversions have identified a series of deep-seated, conductive structures linking known deposits and untested prospects across the caldera trend, supporting the case for scale and depth-extent potential at both Mascotte and Emu. Mascotte Phase 2 Drilling Approval The Mascotte Phase 2 program follows on from the Phase 1 exploration drilling, which is currently being completed. The Phase 2 approval allows drilling up to eight diamond drillholes across three drill site clusters already constructed under the Phase 1 program. Drilling will commence following completion of the lab assays from the current Phase 1 program. Each hole may be drilled to a depth of up to 500m, providing a significant step-out to test the structural and depth potential of the Mascotte mineralised system, which remains open along strike and at depth. Mascotte Prospect Background The Mascotte Prospect, located approximately 3.5km south-east of the village of Drake within EL6273, is defined by an area of significant historical workings. Ground-truthing has indicated that the primary mineralised trend is approximately 1.3km in strike, with several potential parallel mineralised structures that were historically mined for silver and gold, with elevated copper and zinc. Figure 2. Cross-section of assays of geology interpretation at drillhole MSDD001i . Page 4 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Silicification has been mapped across approximately 2km², bounding the workings on the south- eastern edge, with a 400m long zone of increased chalcedony and jasperoidal silica associated with workings in the central portion of the Mascotte trend. Recently completed Airborne Mobile MT has identified a district-scale conductivity lineament trending north-east that is broadly associated with known mineralisation and historical workings. This lineament is consistent across the depth profile of the Mobile MT data and provides encouragement for the Prospect's scale and depth-extent potential. Historical Drilling and Recent Surface Sampling Historical drilling on the Prospect was completed by Mount Carrington Mines between 1969 and 1970, comprising 18 shallow percussion holes below the northern workings. Eight of these holes intersected elevated silver mineralisation, with a best intersection of6F6F vii : • 18.3m at 237g/t Ag from 3m, including 9.1m at 394g/t Ag (PDMS005A) • 9.1m at 112g/t Ag from surface (PDMS005) • 24.4m at 45g/t Ag from surface, including 3.0m at 245g/t Ag from 21.3m (PDMS001) Importantly, none of these historical holes was assayed for gold, and drilling was limited to approximately 50m strike length and less than 70m below surface, leaving approximately 1.3km of historical workings entirely untested. In 1983, Aberfoyle drilled four further shallow percussion holes at the northern workings; while this returned anomalous silver, no follow-up work was completed. Recent rock-chip sampling by Legacy Minerals along the trend has confirmed the presence of high- grade gold and silver mineralisation in low-sulphidation epithermal style veins, including7F7F viii : • 11.2g/t Au, 42.6g/t Ag and 1.2% Zn (sample 11233b) • 7.2g/t Au and 26.2g/t Ag (sample 11227b) • 2.1g/t Au, 222g/t Ag and 0.8% Cu (sample 11242b) Gold mineralisation is associated with breccia and banded quartz-carbonate-hematite-pyrite ± base metal veins, hosted within coherent porphyritic andesitic volcanic rocks of the Drake Volcanics. Earlier this year results from the initial drillhole from Legacy Minerals Maiden drill campaign beneath the 1.3km line of Mascotte workings returned significant widths and grades of gold and elevated silver, up to 5.6g/t Au and 72g/t Ag (MSDD001)i : • 40m at 1.0g/t Au from 151m, including: • 9m at 2.7g/t Au from 180m, and • 1m at 5.6g/t Au from 157m. Page 5 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Emu Drilling Approval The Emu Prospect lies on a regional caldera-margin trend within the Mt Carrington Project, approximately 8km north of Drake, NSW, within EL6273. Approval allows for the drilling of up to eight diamond drillholes for a total of 4,000m across five potential drill pad sites, with each hole permitted up to 500m in depth. Figure 3. Emu Prospect soil sampling showing historic copper mine location and silver soil anomalism. Emu Prospect Background and Targets The Emu Prospect is a priority regional target within the broader Mt Carrington Project. It was identified as a discrete porphyry-epithermal target through the integration of historical geological mapping, surface sampling and recent airborne Mobile MT geophysics8F8F ix . Together with the Mascotte and Battery Prospects, Emu forms part of the first phase of regional discovery drilling under Legacy Minerals’ dual-track development and discovery strategy at Mt Carrington. The new airborne Mobile MT survey has highlighted two distinct, untested drill targets at Emu: • Emu Porphyry Core – a deep, low-resistivity feature interpreted as a potential porphyry-style intrusive body beneath the prospect. • Emu Alteration Halo SE – a shallow zone of elevated resistivity interpreted as a silicified alteration halo adjacent to the porphyry core, consistent with porphyry-epithermal style veining at shallower levels. Page 6 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Figure 4. Mobile MT Resistivity 2D Inversion Section (Line 2290) showing the interpreted Emu Porphyry Core, Emu Alteration Halo SE and Battery drill targets. The approved Emu drilling program is designed to provide the first modern drill test of these featuresviii . Mt Carrington Porphyry Halo: A 10km strike length conductivity, part of a major deep-set structure that continues a further 10km north. Closer to surface (300m depth), this anomaly is interpreted to be the eastern alteration segment of the Mt Carrington porphyry core. The Mt Carrington drillholes and Resource occurs within the northern segment of the anomaly. Near surface conductivity anomalies east of the Mt Carrington drillholes and alteration zone represent new areas of interest for further assessment and drill testing. Figure 5. Interpreted Mobile-MT targets and major trends with new interpretation of nested caldera settingviii. Page 7 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Approved by the CEO & Managing Director For more information: Investors: Chris Byrne CEO & Managing Director chris.byrne@legacyminerals.com.au +61 (0) 499 527 547 Media: Nicholas Read Read Corporate nicholas@readcorporate.com.au +61 (0) 419 929 046 DISCLAIMER AND PREVIOUSLY REPORTED INFORMATION Information in this announcement is extracted from reports lodged as market announcements referred to above and available on the Company’s website https://legacyminerals.com.au/. The Company confirms that it is not aware of any new information that materially affects the information included in the original market announcement and that all material assumptions and technical parameters underpinning the estimates in the relevant market announcement continue to apply and have not materially changed. This announcement contains certain forward-looking statements. Forward-looking statements are only predictions and are subject to risks, uncertainties and assumptions which are outside of the control of Legacy Minerals Holdings Limited (LGM). These risks, uncertainties and assumptions include commodity prices, currency fluctuations, economic and financial market conditions, environmental risks and legislative, fiscal or regulatory developments, political risks, project delay, approvals and cost estimates. Actual values, results or events may be materially different to those contained in this announcement. Given these uncertainties, readers are cautioned not to place reliance on forward-looking statements. Any forward-looking statements in this announcement reflect the views of LGM only at the date of this announcement. Subject to any continuing obligations under applicable laws and ASX Listing Rules, LGM does not undertake any obligation to update or revise any information or any of the forward-looking statements in this announcement to reflect changes in events, conditions or circumstances on which any forward-looking statements is based. COMPETENT PERSON’S STATEMENT The information in this Report that relates to Exploration Targets, Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Thomas Wall, a Competent Person who is a Member of the Australian Institute of Geoscientists. Mr Wall is the Technical Director and a full-time employee of Legacy Minerals Pty Limited, the Company’s wholly-owned subsidiary, and a shareholder of the Company. Mr Wall has sufficient experience that is relevant to the style of mineralisation and type of deposit 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. Mr Wall consents to the inclusion of the matters based on this information in the form and context in which it appears in this announcement. The information in this announcement that relates to the Mineral Resource Estimate and classification of the Mt Carrington Project is based on information compiled by Kate Kitchen, who is a Member of the Australasian Institute of Mining and Metallurgy and a Member of the Australian Institute of Geoscientists. Kate Kitchen is an independent consultant employed full time by Mining Plus Pty Ltd. Kate Kitchen has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which she is undertaking 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 (‘the JORC code’). Kate Kitchen consents to the inclusion in the report of the matters based on the information in the form and context in which it appears. Page 8 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB About Legacy Minerals Legacy Minerals is an ASX-listed public company that has been exploring gold, silver, copper, and base-metal projects in NSW since 2017. The Company’s projects present significant discovery opportunities for shareholders, with a focus on discovery drilling and the development of the Mt Carrington Project. Cu-Au Mt Carrington Large caldera (~150km2 ) with similar geological characteristics to other major Pacific Rim low-sulphidation deposits. The current Mineral Resource of 1.2MozAuEq (115Moz AgEq)iii Ni-Co Nico Young Cobalt Blue MoU One of the largest nickel deposits in Australia with significant counter-cyclical exposure. Cu-Au Thomson Rio Tinto JV Option A new and unexplored Intrusion-related gold and copper search space with numerous ‘bullseye’ targets. Cu-Au Rockley Prospective for porphyry Cu-Au, situated in the Macquarie Arc Ordovician host rocks with historical high-grade copper mines. Au-Cu (Pb-Zn) Cobar Undrilled targets next door to the Peak Gold Mines and along strike of the CSA copper mine. Au-Ag Black Range Extensive low-sulphidation, epithermal system with limited historical exploration. Epithermal occurrences across 30km of strike. Au Harden Hill Tops JV Substantial historical gold production from two high-grade and underexplored, orogenic systems. Au-Ag Bauloora One of NSW’s largest low-sulphidation, epithermal systems with a 15km2 epithermal vein field. Au-Cu Fontenoy Earth AI JV A highly prospective and underexplored area for PGE, Ni, Au and Cu mineralisation with significant drill intercepts. Figure 6. Location summary of Legacy Minerals’ Projects in NSW, Australia, and major mines and deposits. Page 9 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Appendix A: Mt Carrington AgEq Mineral Resource (See ASX LGM Release dated 13 March 2025 for additional information)F9F4F5F5F9F9F x Prospect Classification Resource Tonnes and Grade Contained Metal Tonnes (Kt) Au (g/t) Ag (g/t) Cu% Pb% Zn% AgEq (g/t) Au (Koz) Ag (Koz) Cu (kt) Pb (kt) Zn (kt) AgEq (Koz) Strauss Indicated 2,818 1.1 3.1 0.09 0.07 0.6 149 98 281 3 2 16 13,500 Inferred 2,026 1 2 0.08 0.04 0.4 130 63 129 2 1 9 8,468 Kylo Indicated 2,842 1.1 2.1 0.07 0.05 0.4 138 103 191 2 1 11 12,609 Inferred 2,081 0.6 3.8 0.11 0.06 0.6 101 40 251 2 1 13 6,757 Guy Bell Inferred 2,512 0.7 2.3 0.16 0.08 0.6 117 58 188 4 2 15 9,449 Carrington Inferred 2,236 0.5 5.6 0.14 0.08 0.2 83 33 403 3 2 4 5,967 Red Rock Inferred 8,605 0.5 7.4 0.04 0.12 0.49 84 144 2046 3 10 43 23,239 Lady Hampden Indicated 2,136 0.71 62 0.01 0.03 0.07 124 49 4251 0 1 2 8,516 Inferred 2,125 0.74 35 0.01 0.04 0.08 100 51 2388 0 1 2 6,832 Silver King Indicated 469 0.12 80 0.01 0.03 0.07 93 2 1200 0 0 0 1,402 Inferred 106 0.05 53 0.01 0.02 0.05 60 0 180 0 0 0 204 Lead Block Inferred 215 0.21 44 0.01 0.03 0.08 66 2 307 0 0 0 456 White Rock Indicated 3,135 0.05 66 0.02 0.22 0.73 104 5 6629 1 7 23 10,482 Inferred 1,051 0.08 37 0.02 0.16 0.62 72 3 1258 0 2 7 2,433 White Rock North Inferred 2,039 0.05 70 0.01 0.14 0.11 83 4 4592 0 3 2 5,441 Total 34,396 104.7 653 24,294 20 33 146 115,756 The preceding statements of Mineral Resources conform to the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (JORC Code) 2012 Edition. All tonnages reported are dry metric tonnes. Minor differences may occur due to rounding to appropriate significant figures. For White Rock & White Rock North. AgEq calculated using the formula: AgEq = Ag + 84.0712xAu + 93.2167xCu + 36.0156xZn + 27.0117xPb and Recoveries applied are 72% (Au), 71.7% (Ag), 66% (Cu), 85% (Zn) and 85% (Pb). For Kylo, Strauss, & Red Rock AgEq calculated using the formula: AgEq = Ag + 101.417xAu + 125.477xCu + 35.4288xZn + 28.23323xPb and Recoveries applied are 83.1% (Au), 68.6% (Ag), 85% (Cu), 80% (Zn) and 85% (Pb).For Lady Hampden, Silver King, and Lead Block, AgEq calculated using the formula: AgEq = Ag + 82.4186xAu + 63.0108xCu + 27.0046xZn + 21.5193xPb and Recoveries applied are 88.6% (Au), 90% (Ag), 56% (Cu), 80% (Zn) and 85% (Pb). AgEq formula calculated using silver price of $43/oz, gold price of $3600/oz, copper price of $14000/t, zinc price of $4200/t and the lead price of $3150/t (all AUD). All tonnages reported are dry metric tonnes. Minor differences may occur due to rounding to appropriate significant figures. AuEq calculated using the formula: AuEq = Au + 0.00986xAg + 1.237237xCu + 0.3493xZn + 0.2784xPb. Formulas calculated using silver price of A$43/oz, gold price of A$3,600/oz, copper price of A$14,000/t, zinc price of A$4,200/t and lead price of A$3,150/t. In the opinion of the Company, all elements included in the metal equivalent calculation have a reasonable potential to be sold and recovered based on current market conditions and metallurgical test work up to 2017. Page 10 of 10 ASX: LGM SIGN UP TO LEGACY MINERALS’ INTERACTIVE INVESTOR HUB Appendix B: Endnotes i LGM ASX Release, 19 March 2026, Maiden Drilling Makes New Greenfields Gold Discovery ii LGM ASX Release, 30 September 2025, New Silver Drill Targets Approved and Drilling Commencing iii LGM ASX Release, 12 December 2025, New Silver Targets and Drill Approvals at Mt Carrington iv LGM ASX Release, 1 September 2025, Metallurgical Study Commences at Mt Carrington Project v LGM ASX Release, 12 December 2025, New Silver Targets and Drill Approvals at Mt Carrington vi LGM ASX Release 29 October 2024 3,050gt Silver and 79gt Gold in Historical Drake Drilling, LGM ASX Release 2 May 2025 Amendments - Release 1 May 2025, Mount Carrington Mines Limited, 17 April 1970, DIGS R00018103, Sixth Annual Report for Period Ending September 15 1992, EL2662 (Drake) CRA Exploration, Prospectus is issued by White Rock Minerals Ltd (“White Rock”) dated 20 August 2010, ASX TMZ Release: 24 October 2022, High Grade Copper Target at Mt Carrington vii LGM ASX Release, 30 September 2025, New Silver Drill Targets Approved and Drilling Commencing viii LGM ASX Release, 25 August 2025, Drilling Approval and New Targets at Mt Carrington Project ix LGM ASX Release, 30 September 2025, New Silver Drill Targets Approved and Drilling Commencing; LGM ASX Release, 10 October 2025, Gold-Silver-Copper Drilling Underway at Mt Carrington; LGM ASX Release, 12 January 2026, Drilling Commences at Silver-Gold Targets, Mt Carrington. x LGM ASX Release, 13 March 2025, New Drake Resource of 0.8Moz Gold-Eq and 35Moz Silver-Eq: LGM ASX Release, 12 December 2025, New Silver Targets and Drill Approvals at Mt Carrington