Announcement PDF The Western Australian Goldfields Next Standalone Gold Producer Mining Americas Forum Investor Presentation 28 September 2026 Important disclaimers Nature of Document This Presentation is provided on the basis that neither the Company nor its respective officers, shareholders, related bodies, corporate, partners, affiliates, employees, representatives or advisers, make any representation or warranty (express or implied) as to the accuracy, reliability, relevance or completeness of the material it contains. Nothing contained in the Presentation is, or may be relied upon, as a promise, representation or warranty, whether as to the past or the future, and the Company hereby excludes all warranties that can be excluded by law. The Presentation The presentation contains ‘forward-looking statements’. By their nature, forward-looking statements involve known and unknown risks, uncertainties and other factors because they relate to events and depend on circumstances that may or may not occur in the future, and assumptions which may or may not prove to be correct (and may be beyond the Company’s ability to control or predict), any (or all) of which may cause the actual results or performance of the Company to be materially different from the results or performance expressed or implied by such forward-looking statements. No representation is made that any forward-looking statement will come to pass, that any forecast result will be achieved, or that any assumption on which a forward-looking statement is based is reasonable. Forward- looking statements are made as at the date of this Presentation, and the Company disclaims any obligation or undertaking to release any update of, or revision to, any forward-looking statement contained in this Presentation. Summary Information The material contained in this Presentation is a summary and for information purposes only. The information in this Presentation is general in nature and does not purport to be accurate nor complete, nor does it contain all of the information that an investor may require in evaluating a possible investment in the Company, nor does it contain all the information which would be required in a disclosure document or prospectus prepared in accordance with the requirements of the Corporations Act 2001 (Cth) (Corporations Act). It has been prepared by the Company with due care but no representation or warranty, express or implied, is provided in relation to the accuracy, reliability, fairness or completeness of the information, opinions or conclusions in this Presentation by the Company or any other party involved in its preparation. Reliance should not be placed on information or opinions contained in this Presentation and, the Company does not have any obligation to finalise, correct or update the content of this Presentation. Certain data used in this Presentation may have been obtained from research, surveys or studies conducted by third parties, including industry or general publications. To the maximum extent permitted by law, the Company is not responsible for updating, nor undertakes to update, this Presentation. It should be read in conjunction with the Company’s other periodic and continuous disclosure announcements lodged with the ASX, which are available at www.maritanaminerals.com.au/announcements/. Not an offer The information contained in the Presentation is for information purposes only. The Presentation does not comprise a prospectus, product disclosure statement or other offering document under Australian law (and will not be lodged with the Australian Securities and Investments Commission) or any other law. The Presentation also does not constitute or form part of any invitation, offer for sale or subscription or any solicitation for any offer to buy or subscribe for any securities nor shall they or any part of them form the basis of or be relied upon in connection therewith or act as any inducement to enter into any contract or commitment with respect to securities. In particular, the Presentation does not constitute an offer to sell or a solicitation to buy, securities in the United States of America. Not investment advice The information contained in the Presentation is not investment or financial product advice and is not intended to be used as the basis for making an investment decision. Please note that, in providing the Presentation, the Company has not considered the objectives, financial position or needs of any particular recipient. The information contained in the Presentation is not a substitute for detailed investigation or analysis of any particular issue and does not purport to be all of the information that a person would need to make an assessment of the Company or its assets. Current and potential investors should seek independent advice before making any investment decisions in regard to the Company or its activities. JORC Code It is a requirement of the ASX Listing Rules that the reporting of ore reserves and mineral resources in Australia comply with the Joint Ore Reserves Committee’s Australasian Code for Reporting of Mineral Resources and Ore Reserves (JORC Code). Investors outside Australia should note that while Ore Reserve and Mineral Resource estimates of the Company in this presentation comply with the JORC Code (such JORC Code-compliant ore reserves and mineral resources being "Ore Reserves" and "Mineral Resources" respectively), they may not comply with the relevant guidelines in other countries and, in particular, do not comply with (i) National Instrument 43-101 (Standards of Disclosure for Mineral Projects) of the Canadian Securities Administrators (the "Canadian NI 43-101 Standards"); or (ii) Item 1300 of Regulation S-K, which governs disclosures of mineral reserves in registration statements filed with the US Securities and Exchange Commission. Information contained in this document describing mineral deposits may not be comparable to similar information made public by companies subject to the reporting and disclosure requirements of Canadian or US securities laws. You should not assume that quantities reported as “resources” will be converted to reserves under the JORC Code or any other reporting regime or that the Company will be able to legally and economically extract them. Authorised for release to the ASX by the Board of Directors of Maritana Minerals Ltd. 2 Important disclaimers Forward Looking and Cautionary Statement As noted above, some statements in this Presentation regarding estimates or future events are forward looking statements. They include indications of, and guidance on, future earnings, cash flow, costs and financial performance. Forward looking statements include, but are not limited to, statements preceded by words such as “planned”, “expected”, “projected”, “estimated”, “may”, “scheduled”, “intends”, “anticipates”, “believes”, “potential”, “could”, “nominal”, “conceptual” and similar expressions. Forward looking statements, opinions and estimates included in this Presentation are based on assumptions and contingencies which are subject to change without notice, as are statements about market and industry trends, which are based on interpretations of current market conditions. Forward looking statements are provided as a general guide only and should not be relied on as a guarantee of future performance. Forward looking statements may be affected by a range of variables that could cause actual results to differ from estimated results, and may cause the Company’s actual performance and financial results in future periods to materially differ from any projections of future performance or results expressed or implied by such forward looking statements. These risks and uncertainties include but are not limited to liabilities inherent in mine development and production, geological, mining and processing technical problems, the inability to obtain any additional mine licenses, permits and other regulatory approvals required in connection with mining and third party processing operations, competition for among other things, capital, acquisition of reserves, undeveloped lands and skilled personnel, incorrect assessments of the value of acquisitions, changes in commodity prices and exchange rate, currency and interest fluctuations, various events which could disrupt operations and/or the transportation of mineral products, including labour stoppages and severe weather conditions, the demand for and availability of transportation services, the ability to secure adequate financing and management’s ability to anticipate and manage the foregoing factors and risks. There can be no assurance that forward looking statements will prove to be correct. Statements regarding plans with respect to the Company’s mineral properties may contain forward looking statements in relation to future matters that can only be made where the Company has a reasonable basis for making those statements. The forward looking statements in this Presentation are based on current expectations, estimates, forecasts and projections about the Company and the industry in which it operates. They do, however, relate to future matters and are subject to various inherent risks and uncertainties. Actual events or results may differ materially from the events or results expressed or implied by any forward looking statements. The past performance of the Company is no guarantee of future performance. You are cautioned not to place undue reliance on any forward looking statement. The forward looking statements in this Presentation reflect views held only as at the date of this Presentation. None of Maritana Minerals Limited or its directors, officers, employees, agents or contractors makes any representation or warranty (either expressed or implied) as to the accuracy or likelihood of fulfilment of any future looking statement, or any events or results expressed or implied in any forward looking statement, except to the extent required by law. The Company believes that it has a reasonable basis for making the forward looking statements in the Presentation, including with respect to any production targets and financial estimates, based on the information contained in this and previous ASX announcements. Aspirational Statement The Company’s vision to be a ~100kozpa producer in this presentation are aspirational statements (and not a production targets) and the Company does not have reasonable grounds to believe this can be achieved. These statements are of an aspiration nature as the vision to be a ~100kozpa producer is dependent on several factors including the exploration success, ore reserves and mineral resources definition, feasibility studies and development of an extended mine plan. Mineral Resources and Ore Reserves This Presentation contains estimates of the Company's Mineral Resources and Ore Reserves. Refer to Slide 24 to 26. The information in this Presentation that relates to the Company’s Mineral Resources and Ore Reserves has been extracted from the Company's previous ASX announcements including: 1. ASX Announcement “Gold Mineral Resources Update” dated 13 February 2026 and 2. ASX announcement “Gold Ore Reserve Update” dated 17 February 2026. Copies of these announcements are available at www .asx.com.au or maritanaminerals.com.au/announcements. The Company confirms that it is not aware of any new information or data that materially affects the information included in those announcements and, in relation to the estimates of the Company’s Mineral Resources and Ore Reserves, that all material assumptions and technical parameters underpinning the estimates in the announcements continue to apply and have not materially changed. The Company confirms that the form and context in which the Competent Person's findings are presented have not been materially modified from those announcements. Production Targets This Presentation contains production targets and forecast financial information derived from those production targets (including in respect of all-in sustaining costs and capital costs). The information in this Presentation is underpinned by 17% Inferred and 73% Measured and Indicated Mineral Resources as detailed in the ASX Announcement "ASX Announcement “Studies Support Standalone Gold Development in WA Goldfields’” dated 17 February 2026. There is a low level of geological confidence associated with Inferred Mineral Resources and there is no certainty that further exploration work will result in the determination of Indicated Mineral Resources or that the production target itself will be realised. The stated production targets are based on the Company's current expectations of future results or events and should not be solely relied upon by investors when making investment decisions. Further evaluation work and appropriate studies are required to establish sufficient confidence that targets can be achieved. The Company confirms that it is not aware of any new information or data that materially affects the information included in the ASX announcements relating to the Company’s published production targets. All material assumptions and technical parameters underpinning the production targets or forecast financial information derived from production targets (as applicable) in the relevant ASX announcement continue to apply and have not materially changed. 3 Investment proposition Well funded with $229m cash4 - creating +300 full time jobs in the Western Australian goldfields region An attractively priced West Australian gold developer with near-term growth Esperance Albany Geraldton Perth Black Swan Processing Hub 2.5Mtpa (Early Works Underway) with pathway to refurbish / convert to gold processing Mineral Resource Estimate1 2.15Moz: 41.8Mt @ 1.6g/t Au Regional Landholding +1,300km² Projects 20.2Moz Ag 104kt Zn Carnarvon Strategy to produce +100koz p.a. over current 5- year LOM1 from the refurbished Black Swan Processing Hub – increased to 2.5Mtpa2 Targeting start of commencement of plant construction in Q3 CY2026 and first gold production starting in H2 CY2027 2.15Moz3 gold MRE with major drilling program underway – definition & extension of mineable ounces & testing new regional targets Kalgoorlie 1. Refer ASX Announcement “Studies Support Standalone Gold Development in WA Goldfields’” dated 17 February 2026 2. Refer ASX Announcement “BSPH Project Update Increases Capacity to 2.5MT per annum” dated 9 June 2026 3. Refer ASX Announcements “Gold Mineral Resources & Reserves Update” dated 21 August 2026 and “Rose Hill Mineral Resource and Maiden Ore Reserve Update” dated 31 August 2026 and “Burbanks Resource Model Update” dated 11 September 2026 4. Refer ASX Announcement “Quarterly Activities Report 30 June 2026” dated 22 June 2026 4 Maritana Minerals – at a glance An attractively priced West Australian gold developer with near-term growth potential Directors and Management Institutions Golden Crane/Add New Energy HNW, Retail and Others Capital structure Units Current Share price A$/sh 0.77(1) Ordinary shares M 372.9(1) Options and performance rights M 4.7(1) Market capitalisation A$M 280 Cash and cash equivalents A$M 229(2) Debt A$M Nil(2) EV A$M 51 1. At 25 September 2026 2. At 30 June 2026. Excludes listed investments with a value of ~$6.5M Indicative Share Register Research Coverage Adjusted to match share structure and volume post 15-to-1 capital consolidation effective 9 December 2025 Share Trading & Price 5 Maritana Minerals – Board and Management Key experience in operations and value delivery Ashok Parekh Non-Executive Chair Grant Haywood Managing Director Rob Waugh Non-Executive Director Warren Hallam Non-Executive Director Christian Price GM Corporate Development Brendan Shalders CFO & Joint CoSec Stephen Guy Chief Geologist Adrianna Skok-Muir Group Mining Engineer Isabel Macchia Company Secretary 6 Doug Flanagan Project Director Elizabeth Jones Chief Operating Officer Project portfolio • Large +1,300km2 land package within 100km of Kalgoorlie • 2.15Moz Group Mineral Resource1 (41.8Mt @ 1.6g/t Au) • Majority of known deposits remain open with potential for resource growth • 2.5Mtpa Black Swan process plant being refurbished for gold production • Hub-and-spoke operating model • Additional multi-commodity optionality from the high-grade Nimbus Silver-Zinc deposit (20.2Moz Ag, 104kt Zn, and 77koz Au) 44km from Black Swan Strategically constructed gold portfolio centered around major geological structures and infrastructure 1. Refer ASX Announcement “Gold Mineral Resources & Reserves Update” dated 21 August 2026 and “Burbanks Resource Model Update” dated 11 September 2026 2. Refer ASX Announcement “BSPH Project Update Increases Capacity to 2.5MT per annum” dated 9 June 2026 7 Hub and Spoke Model producing 546koz in 5 years 8 Multiple ore sources feeding into the Black Swan Processing Hub1 Years 1 – 4 106.6koz BOORARA S/P & OPEN PIT Years 3 – 5 212.1koz OTHER OPEN PIT AND U/G Years 2 – 5 51.5koz COOTE AND CRAKE OPEN PITS Years 2 – 5 128.8koz BURBANKS OPEN PIT CANNON AND PENNYS U/G 64km 110km 48 - 80km 42 - 110km 90km BLACK SWAN PROCESSING HUB Years 1 – 4 47.4koz 1. Refer ASX Announcement “Studies Support Standalone Gold Development in WA Goldfields’” dated 17 February 2026 Black Swan Processing Hub1 • ~50km northeast of Kalgoorlie • Comminution circuit suitable for gold processing after refurbishment and addition of a carbon in leach (CIL) circuit • Updated FEED Study1 fully utilises existing 2.5Mtpa processing capacity • Estimated replacement value of +A$250M • Plant construction risk reduced with key permits and approvals in place • Provides a platform for potential regional consolidation and unlocking stranded assets • Early works underway2 • Upcoming Milestones - Final approvals, EPC award and construction commencement Facilitates hub and spoke operating model 1. Refer ASX Announcement “BSPH Project Update Increases Capacity to 2.5MT per annum” dated 9 June 2026 2. Refer ASX Announcement “Early Works Commence at Black Swan Processing Hub” dated 20 June 2026 PROCESSING 9 Black Swan Processing Hub Early Works and Demolition – Ongoing 10 Black Swan Processing Hub Exiting Sulphide Floatation Circuit to be retained for potential future ore processing 11 Black Swan Processing Hub Refurbishment Phase – Underway Early Works1 12 1. Refer ASX Announcement “Early Works Commence at Black Swan Processing Hub” dated 20 June 2026 Black Swan Processing Hub Construction Phase – Early Works1 Underway – Long lead items ordered 13 1. Refer ASX Announcement “Early Works Commence at Black Swan Processing Hub” dated 20 June 2026 Black Swan Processing Hub Final Plant Arrangement – Gold CIL processing circuit with floatation ore processing optionality 14 Black Swan Processing Hub NPI and Approvals – Progress Update1 15 • Early Works2 – $25M Early works contract underway with GRES Approvals – Mining Development and Closure Proposal (MDCP) approved by DMPE late July 2026 and Works Approval for the new Carbon-in-Leach also approved in early August 2026 • Accommodation Update – 57 room fly camp complete • Demolition – Contract awarded to Focus Demolition and underway • Site establishment – Clearing underway • Process water – A $2.1M bore fields refurbishment and upgrade program of BSPH bores is underway 1. Refer ASX Announcement “BSBP Approvals & Non-Process Infrastructure Advancing” dated 12 August 2026 2. Refer ASX “Early Works Commence at Black Swan Processing Hub” dated 20 July 2026 Production ramp-up • Boorara stockpile 460kt (14.2koz) – a de- risked startup • Baseload open pit feed with supplementary high grade underground sources • Early mine plan underpinned by high confidence Mineral Resources and Ore Reserves – 60,000m of drilling underway1 Cash flow and future baseload open pit feed PRODUCTION 16 1. Refer ASX Announcement “Maritana Commences Resources Conversion Drilling” dated 25 June 2026 Boorara Project1 Overview – Initial baseload feed for the Black Swan Processing Hub 17 1. Refer ASX Announcement “Studies Support Standalone Gold Development in WA Goldfields’” dated 17 February 2026 Cannon Project1 Overview – Supplementary underground high grade ore feed 18 1. Refer ASX Announcement “Studies Support Standalone Gold Development in WA Goldfields’” dated 17 February 2026 Burbanks Project1 Overview – Second open pit base load feed 19 1. Refer ASX Announcement “Studies Support Standalone Gold Development in WA Goldfields’” dated 17 February 2026 Burbanks MRE Update1 Phase 1 drilling increases resource by 62% to +750koz 20 1. Refer ASX Announcement “High-Grade Burbanks Deposit Increases 62% to 750koz’” dated 11 September 2026 Black Swan exploration potential • Previous exploration largely targeting nickel sulphide mineralisation – only 5% of drill assays have tested for gold • Target areas adjacent to the Mt Monger fault which is associated with several regional gold mining operations • Gold prospectivity of the Black Swan area demonstrated with prior drill intersections grading up to 6.41g/t Au1 • Numerous gold nuggets located1 • Identified a new 6.5km-long gold trend around Black Swan • Initial aircore +5,000m drill program completed August 20262 • Assays due in October 2026 Untested gold anomalies emerging adjacent to the process plant infrastructure 1. Refer ASX announcement (ASX:POS) "Gold Potential Builds at Black Swan" dated 24 September 2024 2. Refer ASX announcement (ASX:MRT) “Commencement of Drilling at the Wilsons Prospect" dated 7 August 2026 21 Key Milestones and Timing 22 Pathway to gold production from Black Swan Processing Hub Area Work Streams and Deliverables CY 2026 CY 2027 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Corporate Lake Johnston Sale and Phillips Find Mining Cash Equity Raise - A$175M + SPP Development & Growth Burbanks MRE Update Resource Extension & Grade Control drilling Mining & Operations Open Pit Boorara Ore Stockpiling & Mining Underground Mobilisation & Development Underground High-Grade Ore Production Black Swan Processing Hub Black Swan Plant 2.2Mtpa Studies Complete FEED Increase to 2.5Mtpa – Early Works Commenced Final Approvals EPC Contract Award Black Swan Accommodation Construction Black Swan Plant Construction Black Swan Plant Commissioning Black Swan Plant Gold Production Martiana Minerals - An Emerging Standalone Gold Producer Drilling now extending and enhancing a robust initial five year mine plan Combination of 2.15Moz of Mineral Resource1 and processing infrastructure Well funded pathway to standalone gold production by H2 CY2027 Highly experienced Board and Management with strong Goldfields regional expertise 1. Refer ASX Announcement “Gold Mineral Resources & Reserves Update” dated 21 August 2026 and “Burbanks Resource Model Update” dated 11 September 2026 23 Contact Us Grant Haywood Managing Director and CEO +61 (08) 9386 9534 info@maritanaminerals.com.au maritanaminerals.com.au PO Box 1064 West Perth WA 6872 Appendix Mineral Resource1 Estimate 1. Refer ASX Announcements “Gold Mineral Resources & Reserves Update” dated 21 August 2026, “Rose Hill Mineral Resource and Maiden Ore Reserve Update” dated 31 August 2026 and “High- Grade Burbanks Deposit Increases 62% to 750koz” dated 11 September 2026 Gold projects . Project Measured Indicated Inferred Total kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz kt Au (g/t) koz Baden Powell 596 1.20 23 596 1.20 23 Boorara 498 1.12 18 6,231 1.27 254 2,547 1.26 103 9,276 1.26 375 Boorara SP 463 0.95 14 463 0.95 14 Burbanks OP 3,329 1.49 160 7,306 1.43 336 10,636 1.45 496 Burbanks UG 357 3.04 35 2,710 2.57 224 3,067 2.63 259 Cannon 185 4.80 29 47 2.28 3 232 4.29 32 Capricorn 659 1.20 25 659 1.20 25 Coote 2,321 0.86 64 2,321 0.86 64 Crake 1,699 1.29 70 123 1.08 4 1,822 1.28 75 Golden Ridge 476 1.82 28 52 1.71 3 527 1.81 31 Golden Ridge North 1,511 0.86 42 1,021 1.14 37 2,532 0.97 79 Gordons Dam 693 1.24 28 693 1.24 28 Jacques/Peyes 996 2.54 81 856 1.85 51 1,852 2.22 132 Monument 919 1.11 33 919 1.11 33 Phillips Find OP 325 2.41 25 180 2.11 12 505 2.30 37 Phillips Find UG 3 2.27 0.2 3 2.27 0.2 Rosehill (OP) 194 1.96 12 92 2.05 6 287 1.99 18 Rosehill (UG) 330 4.46 47 194 4.53 28 524 4.49 76 Pinner 64 1.02 2 267 1.25 11 330 1.21 13 Kalpini 1,768 2.04 116 591 1.72 33 2,359 1.96 149 Pennys Find 305 5.19 51 123 3.02 12 429 4.57 63 Teal 1,009 1.96 64 801 2.50 64 1,811 2.20 128 Grand Total 1,156 1.20 44 18,679 1.68 1,010 22,011 1.55 1,096 41,846 1.60 2,150 Tonnages are dry metric tonnes. Minor discrepancies may occur due to rounding. Burbanks OP and UG per the Burbanks Resource Model Update (September 2026), reported at 0.5g/t Au cut-off above 180mRL and 1.0g/t Au below; Burbanks OP includes Galaxias (265kt @ 1.14g/t Au for 10koz Inferred). 26 Ore Reserve1 Estimate 1. Refer ASX announcements “Gold Ore Reserve Update” dated 17 February 2026 and “Rose Hill Mineral Resource and Maiden Ore Reserve Update” dated 31 August 2026. Rose Hill UG cut-off 1.3 g/t Au (AUD $4,500/oz gold price). Gold projects MARITANA MINERALS GOLD ORE RESERVE SUMMARY Project Cutoff Proven Probable Total Au ppm kt Au g/t Koz kt Au g/t Koz kt Au g/t Koz Boorara 0.5 247 1.10 9.1 1,445 1.40 62.7 1,691 1.36 71.8 Cannon UG 1.0 135 4.10 17.7 135 4.10 17.7 Pennys Find UG 1.5 328 3.20 33.4 328 3.20 33.4 Kalpini 0.5 867 1.69 47.2 867 1.69 47.2 Crake 0.5 870 1.23 34.4 870 1.23 34.4 Rose Hill UG 1.3 70 2.14 4.7 350 2.37 26.8 420 2.34 31.6 TOTAL 316 1.33 13.7 3,994 1.75 221.9 4,310 1.72 235.6 27 Mineral Resource1 Estimate 1. Refer ASX Announcement “Group Mineral Resources Statement – Amended” dated 1 August 2024 Nimbus silver-zinc project Nimbus All Lodes (bottom cuts 12 g/t Ag, 0.5% Zn, 0.3g/t Au) Category Mt Ag (g/t) Au (g/t) Zn (%) Ag (Moz) Au (kt) Zn (kt) Measured Resource 3.62 102 0.09 1.2 11.9 10 45 Indicated Resource 3.18 48 0.21 1.0 4.9 21 30 Inferred Resource 5.28 20 0.27 0.5 3.4 46 29 Total Resource 12.08 52 0.20 0.9 20.2 77 104 Nimbus high grade silver zinc resource (500g/t Ag bottom cut and 2,800g/t Ag top cut) Category Mt Ag (g/t) Zn (%) Ag (Moz) Zn (kt) Measured Resource - - - - - Indicated Resource 0.17 762 12.8 4.2 22 Inferred Resource 0.09 797 13.0 2.2 11 Total Resource 0.26 774 12.8 6.4 33 28