Announcement PDF IN VESTOR - 1 ASX: DTM Dart Mining NL (ASX:DTM) Investor Webinar J u n e 2 5 , 2 0 2 6 1 IN VESTOR - 2 ASX: DTM FORWARD LOOKING STATEMENTS AND CAUTION Certain statements contained in this document constitute forward looking statements. Such forward looking statements are based on a number of estimates and assumptions made by the Company and its consultants in light of experience, current conditions and expectations of future developments which the Company believes are appropriate in the current circumstances. This presentation contains visual estimates of mineralisation, and the company would like to stress that visual estimates of mineralisation abundance contained in this announcement should never be considered a proxy or substitute for Laboratory analysis. Visual estimates potentially provide no information regarding concentration of economic grades or factors, impurities or deleterious physical properties relevant to valuation. These estimates and assumptions while considered reasonable by the Company are subject to known and unknown risks, uncertainties and other factors which may cause the actual results, achievements and performance of the Company to be materially different from the future results and achievements expressed or implied by such forward-looking statements. Investors are cautioned that forward looking information is no guarantee of future performance and accordingly, investors are cautioned not to place undue reliance on these forward-looking statements. The Company confirms that in the subsequent investor presentation that it is not aware of any new information or data that materially affects the information included in the presentation and that all material assumptions and technical parameters underpinning the estimates in the relevant market announcements continue to apply and have not materially changed. ASX: DTM IN VESTOR - 2 IN VESTOR - 3 ASX: DTM James Chirnside has been professionally engaged in the financial, commodity, and mining industries over a forty-year period. Throughout that period, he has worked in Fund Management, Commodity Trading, Investment Banking, and Mining Operations. Mr. Chirnside studied for a Bachelor of Business degree at Edith Cowan University in Perth, Western Australia, and has been Executive Chairman of Dart Mining since 2016. MR. JAMES CHIRNSIDE Executive Chairman Dean Turnbull is a geology graduate from the Bendigo College of Advanced Education and has a Postgraduate Honours degree in geology from the Key Centre for Ore Deposit and Exploration Studies (CODES) at the University of Tasmania. Mr. Turnbull has over 30 years’ experience as an exploration / mine geologist specialising in 3D geological and structural modelling and was instrumental in the discovery and subsequent exploration of the Unicorn Porphyry Mo – Cu – Ag project. Mr. Turnbull is a member of Australian Institute of Geoscientists. MR. DEAN TURNBULL Non-Executive Director Founder , Geologist Richard Udovenya is the principal of the law firm ResourcesLaw International (Melbourne) which focusses on natural resources projects in Australia and Africa. Mr. Udovenya has almost 40 years legal experience in Australia and New Zealand, and is a director of, and a legal advisor to, several Australian and international resources companies. MR. RICHARD UDOVENYA Non-Executive Director, Lawyer Terry Bates is Head of Business Development for Dart Mining. Mr. Bates has an Honours degree in Geology from the University of Melbourne, an MBA and Company Directors Diploma (AICD). He worked as an exploration geologist before enjoying a diverse career in business and environmental management, and as a Company Director. Mr. Bates has worked on mining projects in varying capacities in Australia, West Africa, Europe, South America, and the Asia- Pacific region. Mr. Bates has strong expertise in corporate strategy and management systems. MR. TERRY BATES Non-Executive Director, Geologist CORPORATE PROFILE Board of Directors IN VESTOR - 3 ASX: DTM IN VESTOR - 4 ~$0.015 SHARE PRICE CAPITAL STRUCTURE ~$5.1M CASH & CONTINGENT RECEIVABLES ($3.5m subject to successful Indi go IPO & $300k subject to Buckland sale completion) ENTERPRISE VALUE MARKET CAPITALISATION 262,135,778 SHARES ON ISSUE 185,684,337 OPTIONS (inc. ESOP) 4,058,333 ESOP (Excluding Directors) -$0.8M ~$3.9M DIVESTMENT HIGHLIGHTS • Tota l of $7. 4M to b e p ote nti all y re a lis e d (A pp roxi matel y doub le the cur re nt DTM mar ke t ca pi tal is ati on). o Bi nd i ng A gr eement to sell Mt Uni c or n, San d y Cr eek , Tal lan do on and Dar t Gold f i el d s p roj ec ts fo r $7.1M - 50% i n cas h an d 50% i n s h ar es (s u bj ec t to Sh ar eh ol der app rov al an d s uc c ess fu l I nd i go Met al s IPO ). o $300k s ale of Buc k land Gol d p ro j ec t p e nd i ng c omp leti on . • E xte ns i ve p re parati on o f mater i als and Data - ro oms f or b ro ad mar ket in g c ampai g ns to p ro gr es s d i ve stme nt o f f ur th er no mi n ate d Vi c tor i an p roj e c ts – More pote nti al val ue wi ll b e re al is ed ASX: DTM IN VESTOR - 6 ASX: DTM PROJECT FOOTPRINT 6 ASX: DTM Triumph - Gold / Silver / Antimony • ~50km South of Gladstone • Intrusive Related Gold and Silver project • Existing Resource ~150koz Au • Exploration Target Base Case 6.9Mt @ 2.29g/t gold for 506,000oz gold. Coonambula - Gold / Antimony • 4,000m of Diamond Drilling completed – high-grade gold, antimony and silver • Metallurgy studies about to commence • JORC Resource declaration 2026 • Historic mine targets Rushworth - Gold / Antimony • ~45km East of Fosterville • Fosterville style sulphide mineralisation • Key holding near Costerfield • Entire Rushworth Goldfield • Seeking interested parties for divestment, earn-in or JV. Northern Porphyries / Sandy Creek / Tallandoon / Dart Goldfield • Binding sale agreement with Indigo Metals with $7.1M deal pending successful IPO and DTM shareholder approval. Buckland - Gold • Sold for $300,000, awaiting completion Raglan - Gold / Copper • Raglan Goldfield historic gold and copper mines. • Prospective Lithium, Gold and Antimony exploration titles • Seeking interested parties for divestment or JV Dorchap - Lithium / Gold / Antimony Walwa - Tin / Tungsten • Assessment of tin- tungsten prosects and historic mines • Drill targets being generated with Rock Chip Samples in Lab for Assays. IN VESTOR - Northern Territory Package - Gold / Copper / Tin / Tungsten / Uranium • ~4,700km² in the Pine Creek region of the Northern Territory with Gold, Copper, Tungsten, Tin, and Uranium deposits. • Land access underway with surface sampling to commence as soon as access is granted. Northern Territory Package IN VESTOR - 7 ASX: DTM • Walwa Tin-tungsten Project • Desktop and on-ground assessment. • Development of 3-D model based upon extensive existing drill data. • Rushworth Gold Project • Granting of EL008161. • Coonambula Antimony-Gold Project • Assay results from 17 holes due imminently. • Metallurgical test work results. • Resource (JORC) calculation for Banshee gold- silver-antimony deposit. • ML application advancement. • Identify high-priority exploration targets. • NT Tenement Package • Licence Grants. • Geological summary. • Acquisition Completion. • Land Access and Surface Sampling. News-flow through to CYE 2026 7 ASX: DTM • NE Victorian Porphyry Projects • Completion of $7.1 million Sale to Indigo Metals (Binding agreement, conditional on successful IPO). • Buckland Gold Project • Completion of $300,000 sale transaction. • Triumph Gold Project • Updated resource for the New Constitution deposit. • ML application advancement. • Rework Geophysical database to identify new intrusive related gold systems. • New Project Generation • Multiple transformational projects under review. IN VESTOR - 8 ASX: DTM • Completion of Triumph Purchase – Triumph is an intrusion related gold project with million-ounce potential • Increase in inferred JORC Resource to 150,000 ounces of Gold - 2.16Mt @ 2.17g/t Au • Exploration Target Definition – base case 6.9M/t @ 2.29g/t Au for 506,800oz Gold - high quality and robust exploration target based upon drill intercepts • Completion of first phase of resource drilling • Highest grade intercept to date @ 114g/t Au • Completion of initial Deep Target drilling • Significant mineralisation intersected at depth including 4.4m @ 8.99g/t Au from 171.3m and 0.4m @ 34.6 g/t Au intersected at 258m depth downhole • Commencement of mining strategy study Exploration Achievements Triumph Project - QLD 8 • Farm-in Joint Venture agreement reached with Great Divide Mining over the Coonambula project, Queensland's best and highest-grade Antimony Project, which comfortably sits amongst the top 10 Antimony projects in Australia • Completion of 4,000m of Diamond Drilling to earn 45% interest which moves to 51% after metallurgy sighter study and resource estimation • Consistent high-grade gold-antimony-silver drill intersections • Drilling is designed to declare an antimony-gold JORC Resource at the earliest opportunity • Completion of QLD Government Funded IP Survey generating exciting new drill targets and extensions Coonambula Project - QLD ASX: DTM IN VESTOR - 9 ASX: DTM • The region is known to host major intrusion related gold (IRG) systems, porphyry and epithermal style gold and copper-gold projects • Mt Rawdon ~2.8 Moz Au • Cracow ~3.0 Moz Au • Mount Morgan ~8 Mox Au (VMSRelated) • Ravenswood ~8 Moz Au Regional Setting and Footprint Location of Triumph, Coonambula, Raglan, and Skarn Ridge Projects COONAMBULA - ANTIMONY & GOLD PROJECT • New England Fold Belt geology • Similar geology to Hillgrove and Neardie deposits TRIUMPH – GOLD & SILVER PROJECT • Fractured tonalite host rock • Analogous to the Ravenswood Mine • 150,000oz gold JORC Resource • 506,000oz @ 2.29g/t gold exploration target base case RAGLAN GOLD & COPPER PROJECT - Application • Raglan Goldfield historic gold and copper mines ASX: DTM IN VESTOR - 9 QUEENSLAND PROJECTS FOOTPRINT IN VESTOR - 1 0 ASX: DTM • Farm-in Agreement with Great Divide Mining (ASX: GDM)(1) • Earn in up to 51% - with the completion of 4,000m of diamond drilling Dart has earned 45%. Metallurgy studies and JORC Resource declaration will bring Dart Mining project equity to 51% • Highlights from 2025-6 drilling(2) include: • 5.0m @ 4.33% Sb, 1.69g/t Au & 23.65g/t Ag from 41.5m in hole CBADD001 • 6.5m @ 5.1g/t Au from 180m in hole CBADD002 • 9.0m @ 5.8%Sb, 2.67g/t Au &16.8g/t Ag from 32.5m in hole CBADD010 • 1.3m @ 10.5%Sb, 3.8g/t Au & 131.9g/t Ag from 8.7m in hole CBADD006 • 4.9m @ 5.27g/t Au from 21.0m in hole CBADD013 • Dart Grab samples across the project returned results of 65.3% Sb and 55.5% Sb. 17g/t Au and 15.05g/t Au, 97.9 g/t Ag and 66.7g/t Ag (3) • Shear hosted, orogenic gold system with strong association of gold and antimony. All mineralisation in intrusive rocks. • Holds potential to define a significant intrusion related gold system within a region of Queensland hosting similar multimillion ounce gold resources. Limited modern exploration, with no drilling since 2014. COONAMBULA ANTIMONY & GOLD PROJECT Summary and Geology Note1 – ASX: DTM Dart Mining agreementover Advanced Antimony Gold Project(12th March 2025) Note2 – ASX : DTM10 Nov 2025, DTM 15 Dec2025, DTM16 Apr2026, DTM4 Jun 2026 Note3 - ASX: DTM Outstanding Antimony, Gold and Silver results fromsurface rock chip sampling at Coonambula (10th October 2025) Rock sample from Banshee prospectat Coonambula showing 95% massive Stibnite (antimony sulphide) – rockis unsampled. *Visualrepresentation and estimation of mineralisationshouldnot be relied on ASX: DTM IN VESTOR - 10 IN VESTOR - 1 1 ASX: DTM • The Banshee mineralised trend is being highlighted by a subtle chargeability response. • At the western end a new chargeable zone appears to the north suggesting either a possible fault offsetting the system or a new parallel zone. • New chargeability high to the north of the Banshee historic mine with coincident soil anomalies creates a drilling target for new high-grade gold-antimony mineralisation. • Drilling has tested the western end of the chargeability zone although the possible fault offset position remains to be tested. • Drill assays from 17 holes due over the coming weeks. COONAMBULA ANTIMONY & GOLD PROJECT Results from CEI funded IP Survey ASX: 25 February 2026 - DTM Antimony mineralisation extensions highlighted by preliminary IP Survey Interpretation at Coonambula Orthogonal view of IP Survey showing progress and preliminary interpretation ASX: DTM 11 IN VESTOR - IN VESTOR - 1 2 ASX: DTM COONAMBULA ANTIMONY & GOLD PROJECT Long Section of Banshee Gold-Antimony-Silver Deposit ASX: DTM IN VESTOR - 12 IN VESTOR - 1 3 ASX: DTM TRIUMPH GOLD PROJECT Triumph – Resource Drilling ASX: DTM Triumph drilling reveals new gold mineralised zones (3rd July 2025) • Triumph has an existing Inferred Mineral Resource of 2.16 Mt @ 2.17g/t Au for 150,000oz gold and an Exploration Target of 5.1 - 7.6 Mt @ 1.72 - 2.52 g/t Au for 285,100-613,200oz gold. • Long projection showing drilling intersections from the New Constitution loads highlighting locations of recent drilling intercepts. • Drilling focused on key areas for developing understanding the geology controls on mineralisation. • Drilling has generated significant improvement in our geological understanding and allowed further targeting at depth. ASX: DTM IN VESTOR - 1 3 13 IN VESTOR - 1 4 ASX: DTM Long projection showing location of significance of drilling intersections to the south, and down plunge of the existing resource at Big Hans. Highlight Intercepts to date: • 10.8m @ 1.17 g/t Au • 4.4m @ 8.99 g/t Au • 18.0m @ 3.99 g/t Au • 4.0m @ 27.12 g/t Au • 3.1m @ 7.98 g/t Au • 3.0m @ 10.93 g/t Au • 6.0m @ 5.36 g/t Au TRIUMPH GOLD PROJECT ASX: DTM Triumph drilling delivers highest grade drill intercepts to date (22nd July 2025) ASX: DTM IN VESTOR - 14 Bigs Hans Exploration Drilling IN VESTOR - 1 5 ASX: DTM NORTHERN TERRITORY TENEMENT PACKAGE HIGHLIGHTS 15 ASX: DTM • Technical DD complete, moving to acquisition completion. • ~4,700km² in tenement applications as a package in the Pine Creek region of the Northern Territory, prospective for Gold, Copper, Tungsten, Tin, and world class Uranium deposits. • Confirmed Gold, Copper, Tungsten, Tin and Uranium occurrences within the tenement areas. • The Project contains historic tin and tungsten mines at the Yeuralb a mineral field and gold-copper mineralisation in the Eva Valley area at Ludans, Ghost Gums, Twin Ridges and along strike from the Copper Flower deposit. • The Project has uranium occurrences scattered across the tenement package and coincides with favourable locations for large scale unconformity related uranium deposits. • Several of the unconformity-related U deposits in the region are characterised by significant gold enrichments, e.g. Jabiluka: 4.6Mt ore at 3.07g/t Au; Koongarra: 1.04Mt ore at 3g/t Au. • Land access underway with surface sampling to commence as soon as access is granted. IN VESTOR - 1 6 ASX: DTM • Walwa has the highest recorded primary tin production in Victoria, principally from the Walwa tin mine in EL007426. The last recorded production was in the 1970's when 97,000t of tin bearing ore was extracted. • Around 20 diamond drill holes and over 100 RC percussion drill holes have been drilled at Walwa since the late 1960s. • Walwa tin mine has an extensive access track network suitable for drilling. • Koetong, in EL007426, is best known for tungsten deposits with historic mines at Keady's, Roper's, Roper and O'Doughlin's, and Mclntyre's. • Parallel scheelite mineralised lodes at McHargs Tungsten Project, 5km southeast of Walwa, provide a priority exploration target. WALWA – TIN & TUNGSTEN (NE Victoria) HIGHLIGHTS KEY TIN AND TUNGSTEN PROSEPCTS NORTHEST VICTORIA IN VESTOR - 1 7 ASX: DTM • Compilation and assessment of the large historic mining and exploration data set across the tenements. • Early field inspection of key prospects to assess access for drilling. • Limited rock chip sampling to confirm tin, tungsten, tantalum and niobium grades. • Develop a 3D model of historic diamond and RC drilling, and mineralisation style, at the Walwa tin mine to determine high priority drill targets and resource potential. • Assays from samples are due to be received in 3-4 weeks. WALWA – TIN & TUNGSTEN ASSESSMENT PROCESS PEGMATITE FROM MT ALWA TIN MINE, WALWA, NORTHEAST VICTORIA PEGMATITE FROM MT ALWA TIN MINE, WALWA, NORTHEAST VICTORIA PEGMATITE FROM WALWA MINE, WALWA, NORTHEAST VICTORIA Phoenix Drilling revealed large, low grade halos to the thrust faults and possible fault repetitions. Next step is deeper drilling targeting repetitions. IN VESTOR - 1 9 ASX: DTM EL008161 application in progress, Dart Mining is the highest ranked of competing applications over the area. • EL008161 contains the extension of: • Rushworth Goldfield • Historic Whroo Goldfield • Containing the historic Balaclava mine, • Extension of the Moormbool Fault • A major North South structure associated with the Costerfield Antimony – Gold Mine Region is well serviced with infrastructure Area holds significant prospectivity for Gold, Antimony and Heavy Mineral Sands Mineralisation RUSHWORTH TENEMENT APPLICATION Regional 19 ASX: DTM IN VESTOR - 19 CONTACTS James Chirnside – Executive Chairman Dart Mining NL (ASX: DTM) jchirnside@dartmining.com.au +61 419 605 842 Ben Zervaas – Corporate Advisor Zerp Capital Pty Ltd ben@zerpcapital.com +61 407 211 959 ASX: DTM IN VESTOR - 20 21 DISCLAIMER The information contained in this presentation is for informational purposes only and does not constitute an offer to issue, or arrange to issue, securities or other financial products. The information contained in this presentation in not investment or financial product advice and is not intended to be used as the basis for making investment decisions. The presentation has been prepared without taking into account the investment objectives, financial situation or particular needs of any particular person. Before making an investment decision, you should consider, with or without the assistance of a financial advisor, whether an investment is appropriate in light of your particular investment needs, objectives and financial circumstances. No representation or warranty, express or implied, is made as to the fairness, accuracy, completeness or correctness of the information, opinions and conclusions contained in this presentation. To the maximum extent permitted by law, none of Dart Mining NL, their directors, employees or agents, nor any other person accepts any liability, including, without limitation, any liability arising out of fault of negligence, for any loss arising from the use of the information contained in this presentation. In particular, no representation or warranty, express or implied is given as to the accuracy, completeness or correctness, likelihood of achievement or reasonableness or any forecasts, prospects or returns contained in this presentation nor is any obligation assumed to update such information. Such forecasts, prospects or returns are by their nature subject to significant uncertainties and contingencies. ASX: DTM IN VESTOR - 21