Announcement PDF ASX: DLI deltalithium.com.au CORPORATE PRESENTATION N o ve m b e r 2 0 2 5 ASX: DLI deltalithium.com.au CORPORATE PRESENTATION NOVEMBER 2025 23% 12% 11% 11% 1% 42% MAJOR SHAREHOLDERS CORPORATE OVERVIEW CAPITAL STRUCTURE SHARES ON ISSUE 717.2M PERFORMANCE RIGHTS 9.9M OPTIONS 2.0M MARKET CAP A$147M1 CASH A$55M2 ENTERPRISE VALUE A$92M SHARES IN ASX LISTED COMPANIES ~A$105M3 RESEARCH COVERAGE PROVIDED BY: 1. Closing Price A$0.205 cps 13 Nov 2025 2. Cash Balance as at 13 Nov 2025 3. Based on closing prices 13 Nov 2025 Mineral Resources 22.9% Idemitsu 12.0% Hancock Prospecting 10.7% Waratah 10.7% Board and Management 1.5% Other 42.2% 2 ASX: DLI deltalithium.com.au REVIEW OF OPERATIONS CORPORATE PRESENTATION NOVEMBER 2025 Key Lithium Operating Mine Lithium Resources Lithium Resources Estimates (<5Mt) Ports Lithium Projects 1. Greenbushes 2. Mt Cattlin 3. Mt Holland 4. Split Rocks 5. Buldania 6. Dome North 7. Bald Hill 8. Mt Marion 9. Manna Lithium 10. Kathleen Valley 11. Wodgina 12. Pilgangoora 13. Marble Bar 14. Tabba Tabba 15. Lake Johnston DELTA LITHIUM Critical Minerals JORC Resources 36.5Mt @ 1.1% Li2O 54Mt @ 126ppm Ta2O5 14.8Mt @ 0.42% Rb2O 3 ASX: DLI deltalithium.com.au CORPORATE PRESENTATION NOVEMBER 2025 Nader El Sayed Non-Executive Chairman ► Current Managing Director of Multiplant Holdings – a mining and civil services provider ► Background in risk management, corporate governance, strategy and finance Steve Kovac Non-Executive Director PROVEN EXPERIENCE IN PROJECT DELIVERY OUR BOARD James Croser Managing Director ► 25+ years operational, technical and management experience in the Australian mining sector ► Mining Engineering background ► Founding Director of Delta Lithium Joshua Thurlow Non-Executive Director ► 20+ years experience in mining and resources across Asia Pacific, Africa & North America ► Background in corporate strategy, social responsibility, business development and growth and operations leadership ► Current CEO of Idemitsu Australia ► 25+ years experience in the mining sector ► Held Senior Management and Executive level roles for the past 14 years 4 ASX: DLI deltalithium.com.au RAPID DEVELOPMENT OF WESTERN AUSTRALIAN ASSETS CORPORATE PRESENTATION NOVEMBER 2025 Our Team ► Experienced resource professionals with Life of Mine vision ► Seasoned Lithium Explorers Mt Ida ► All Mining Approvals in place ► Lithium/Tantalum MRE 14.8Mt @ 1.2% Li2O, 170ppm Ta2O5 & 0.42% Rb2O ► Gold exposure via 41% of Ballard Mining Major Shareholders ► Substantial investments by proven lithium miners, multinationals and investors Yinnetharra ► Lithium/Tantalum MRE 21.9Mt @ 1.0% Li2O and 39.4Mt @ 102ppm Ta2O5 ► Exploration and development programs ► Dominant landholding Location ► Two JORC Lithium Resources ► Global MRE 36.7Mt @ 1.1% Li2O ► WA the Hard-rock Lithium Capital of the World Upcoming Catalysts ► Ongoing Exploration programs ► Drill results from Yinnetharra ► Mining and Metallurgy Studies Progressing 5 ASX: DLI deltalithium.com.au ASX: DLI deltalithium.com.au MT IDA LITHIUM PROJECT VALUE CREATION IN THE GOLDFIELDS CORPORATE PRESENTATION NOVEMBER 2025 6 ASX: DLI deltalithium.com.au MT IDA PROJECT OVERVIEW Unique Critical Minerals Geology High-grade LCT pegmatites at Sister Sam, Timoni & Sparrow Lithium Tantalum Rubidium 14.8Mt @ 1.2% Li2O , 170ppm Ta2O5 , 0.42% Rb20 Includes Measured & Indicated Resources of 7.8Mt @ 1.3% Li2O, 224ppm Ta2O5 & 0.45% Rb2O Successful Gold Spinout of Mt Ida Gold Assets 10.3Mt @ 3.3g/t Au for 1.1Moz DEMERGED ‘Ballard Mining’ & ASX-Listed JULY-25 DELTA RETAINS 41.4% Investment value +AUD$100M1 JORC MRE ON GRANTED MINING LEASES FULLY PERMITTED FOR OPEN PIT & UNDERGROUND MINING ONGOING EXPLORATION CORPORATE PRESENTATION NOVEMBER 2025 7 1 156,310,994 shares Ballard Mining (ASX:BM1) Closing price 12/10/25 AUD$0.67 cps ASX: DLI deltalithium.com.au MT IDA GOLD DEMERGER ► Delta separated our Critical Minerals & Gold Assets, creating significant value for shareholders ► Gold Assets at Mt Ida placed into Ballard Mining pursuant to a Demerger Deed & Mineral Rights Deed ► Successful AUD$85M Initial Public Offering and Ballard Mining ASX-listed JULY’25 ► +200% investment growth since listing Ballard Market Cap (as at 13-NOV) AUD$260M1 ► Delta retains Gold exposure & maintains balance sheet strength via a substantial 41.4% holding in Ballard Mining CORPORATE PRESENTATION NOVEMBER 2025 8 BALLARD MINING ELECTROSTATE MALINDA ELECTROSTATE MT IDA LITHIUM MT IDA GOLD 100% 100% 100% MT IDA GOLD 100% ELECTROSTATE MALINDA ELECTROSTATE MT IDA LITHIUM 100% 100% - - - - RECENT CHANGE IN CORPORATE STRUCTURE - - - - 1 Ballard Mining (ASX:BM1) Closing price 13/11/25 AUD$0.695 cps - Listing price 14/7/25 AUD$0.25 cps  ASX: DLI deltalithium.com.au MT IDA LITHIUM & TANTALUM RESOURCE CORPORATE PRESENTATION NOVEMBER 2025 9 ► High-grade Mineral Resource – high-grade undeveloped lithium and tantalum 14.8Mt @ 1.2% Li2O and 170ppm Ta2O5 ► Significant Exploration Upside – Recent drilling increased JORC confidence and included a new LCT pegmatite discovery in Sister Sam footwall position ► High-grade Rubidium up to 1.8% Rb2O1 ► World-class Location – Tier 1 location, in the heart of WA’s Eastern Goldfields ► Clear Pathway to Production – The Mt Ida Project is situated on granted Mining Leases, fully permitted and shovel-ready ► Development & Infrastructure Options – potential to leverage off gold project development by Ballard Mining Figure 1: Recent Sister Sam drilling in blue including new footwall discovery 1 see Delta Lithium ASX announcement 2 Oct 25 “Yinnetharra & Mt Ida Project Updates” ASX: DLI deltalithium.com.au MT IDA RUBIDIUM RESOURCE CORPORATE PRESENTATION NOVEMBER 2025 10 ► Highest-grade public MRE – pervasive & coincident high-grade Rubidium adds to the critical mineral inventory 14.8Mt @ 0.42% Rb2O (no cut-off grade applied) ► Co-located entirely within the Lithium/Tantalum MRE wireframes ► Extremely valuable exotic metal – high tech applications, optics, quantum engineering, military ► +90% metallurgy recovery to mica concentrate in current Mt Ida Lithium flowsheet design ASX: DLI deltalithium.com.au ASX: DLI deltalithium.com.au YINNETHARRA LITHIUM PROJECT GROWING A DISCOVERY IN THE EMERGING GASCOYNE PROVINCE CORPORATE PRESENTATION NOVEMBER 2025 11 ASX: DLI deltalithium.com.au YINNETHARRA LITHIUM PROJECT SOLID PROGRESS AT YINNETHARRA ► Delta is centre-stage in a newly emerging Gascoyne Lithium Province ► JORC Lithium & Tantalum MRE at Malinda 21.9Mt @ 1.0% Li2O (at a 0.5% Li2O cut-off grade) 39.4Mt @ 102ppm Ta2O5 ► Dominant 3,000km2 Gascoyne exploration project, including +80kms strike of prospective sediment/mafic lithologies ► Significant scale and grade – potential to grow through numerous Prospects ► Maiden High-grade Lithium MRE at the Jameson Prospect 0.8Mt @ 1.66% Li2O (at 0.5% Li2O cut-off grade) ► Large Tantalum MRE as potential value-add ► Recent acquisition of Mortimer Hills Project from Zeus Resources & Aston Project from Minerals260 CORPORATE PRESENTATION NOVEMBER 2025 12 ASX: DLI deltalithium.com.au YINNETHARRA LITHIUM PROJECT JORC LITHIUM MRE AT MALINDA ► 21.9Mt @ 1.0% Li2O (at a 0.5% Li2O cut off)1 CORPORATE PRESENTATION NOVEMBER 2025 13 Li Resource category Cut-off Li2O Ta2O5 Grade Tonnes Grade Li2O Grade (Li2O%) (Mt) (% Li2O) (Kt) (Ta2O5 ppm) Yinnetharra Measured 0.5 - - - - Indicated 16.1 1.0 158 77 Inferred 5.8 0.9 54 69 Total Resource 21.9 1.0 212 75 1. Refer to ASX announcement 31 March 2025 “Yinnetharra Lithium and Tantalum MRE Update” ASX: DLI deltalithium.com.au MALINDA DEPOSIT ► Three main LCT pegmatites M1, M36, M47 – all with excellent widths and high-grade lithium assays ► Mineralisation is present from surface to a depth of at least 350m striking E-W for over 2km ► Feasibility level M1 metallurgy completed via 5t pilot process ► Low-grade variability testwork on M1 successful. M36 & M47 programs commenced ► Geometallurgical domaining underway across all pegmatites ► Mining Lease Application lodged at Malinda CORPORATE PRESENTATION NOVEMBER 2025 14 M1 LODE 94m @ 0.94% Li2O from 152m in YRRD471 47m @ 1.3% Li2O from 83m in YDRD011 M1 LODE 69m @ 1% Li2O from 127m in YDRD018 29m @ 1.1% Li2O from 47m in YRRD281 M36 LODE 29m @ 1.1% Li2O from 121m in YNEX003 33m @ 1.9% Li2O from 218m in YRRD118 M47 LODE 44m @ 0.85% Li2O from 3m in YRRD249 41m @ 1.3% Li2O from 66m in YRRD082 ASX: DLI deltalithium.com.au MALINDA DEPOSIT CORPORATE PRESENTATION NOVEMBER 2025 15 Metallurgy testwork progression for M1 pegmatite Grades Units Batch Locked Cycle Pilot Plant Feed Grade %Li2O 1.0 1.0 1.0 Spodumene Concentrate Grade %Li2O 6.0 5.5 5.7 Recovery Breakdown Deslime Losses %Li2O 3.9 3.9 4.2 Mags Losses %Li2O 3.4 3.4 2.8 Mica Prefloat Losses %Li2O 6.4 9.9 6.1 Spodumene Float Losses %Li2O 4.6 6.5 17.7 Global Recovery %Li2O 81.8 76.4 69.2 Pilot plant spodumene flotation circuit during operation ASX: DLI deltalithium.com.au CORPORATE PRESENTATION NOVEMBER 2025 16 ► Investigate a growing Tantalum MRE ► Updated Tantalum MRE calculated OUTSIDE the Lithium wireframes of: 17.5Mt @ 136ppm Ta2O5 ► Sits within current resource pit shells used for MRE estimations ► TOTAL Malinda Tantalum MRE is: 39.4Mt @ 102ppm Ta2O5 YINNETHARRA LITHIUM PROJECT Spatial relationship Lithium and Tantalum ASX: DLI deltalithium.com.au YINNETHARRA LITHIUM PROJECT EXPLORATION PROGRAM 2025 ► Drilling commenced on targets generated by Regional field work CY2025 including soil sampling and detailed mapping ► Geotechnical drilling across Malinda completed ► Scheduled heritage, flora and fauna surveys ► Hydrogeology with seismic survey in April successfully defined deep thalweg bore positions in paleochannels ► Regulatory Approvals & Native Title discussions ongoing ► Follow-up drilling at Jameson a high priority CORPORATE PRESENTATION NOVEMBER 2025 17 JREX001 16m @ 1.7% Li2O from 26m* JREX002 71m @ 1.2% Li2O from 27m* JREX012 18m @ 1.5% Li2O from 13m* *intercepts are not representative of true width JREX002 UV response 43-47m with Li2O assays 1 Refer ASX Announcement 22 April 2024 titled “Company Update & Strong Start to Jameson Drilling” ASX: DLI deltalithium.com.au THE DELTA STRATEGY CORPORATE PRESENTATION NOVEMBER 2025 18 PLAN FOR SUCCESS – EXECUTE THE PLAN STRONG FOCUS ON CAPITAL ALLOCATION & CASH PRESERVATION BUILDING UPON CONFIDENCE AT YINNETHARRA AND MT IDA GOAL IS TO DEVELOP AN OPERATING MINE OPEN TO ACQUISITIONS THAT ADD VALUE TO OUR STRATEGY ASX: DLI deltalithium.com.au CORPORATE PRESENTATION NOVEMBER 2025 19 Premium Locations Yinnetharra Our Team Mt Ida Major Shareholders Upcoming Catalysts ► JORC Lithium resource 21.9Mt @ 1.0% Li2O ► Large Tantalum resource ► Dominant 3,000km2 Landholding ► New Discovery at Jameson ► JORC Lithium resource 14.8 Mt @ 1.2% Li2O ► Mining Approval granted ► High-grade Tantalum & Rubidium present ► Exploration results incoming ► Mining and metallurgy studies progressing ► Gold exposure via Ballard Mining shareholding ► Results driven with proven hardrock lithium experience ► Experienced hardrock lithium partners ► Hardrock Lithium Capital of the World ASX: DLI deltalithium.com.au Thank you CORPORATE PRESENTATION NOVEMBER 2025 20 ASX: DLI deltalithium.com.au GROUP MINERAL RESOURCE ESTIMATES CORPORATE PRESENTATION NOVEMBER 2025 21 Lithium Mineral Resource Estimates Delta Lithium Group Mineral Resource Estimate Resource Category Cut-off grade Li2O Tonnes Grade Li2O Grade Grade (Li2O%) (Mt) (Li2O%) (Kt) (Rb2O%) (Ta2O5 ppm) Yinnetharra Measured 0.5 - - - - - Indicated 16.1 1.0 158 - 77 Inferred 5.8 0.9 54 - 69 Total Resource 21.9 1.0 212 - 75 Mt Ida Measured 0.5 0.5 1.2 5.9 0.39 256 Indicated 7.2 1.3 96 0.45 215 Inferred 7.1 1.1 76 0.38 126 Total Resource 14.8 1.2 178 0.42 170 Total Measured 0.5 1.2 6 0.39 256 Total Indicated 23.3 1.1 254 0.45 125 Total Inferred 12.9 1.0 130 0.38 115 Total 36.7 1.1 390 0.42 121 Notes: Tonnages and grades have been rounded to reflect the relative uncertainty of the estimate. Inconsistencies in the totals are due to rounding. Refer ASX announcement 31 March 2025 “Yinnetharra Lithium and Tantalum MRE Update” Refer ASX announcement 3 October 2023 “Mt Ida Lithium Project Mineral Resource Estimate upgrade” Refer ASX Announcement 13 November 2025 “Mt Ida Lithium and Rubidium MRE” ASX: DLI deltalithium.com.au Yinnetharra Tantalum ONLY Resource March 2025 Area Resource category Cut-off grade (Ta2O5ppm) Tonnes (Mt) Li2O% Li2O (Kt) Ta2O5 ppm Ta2O5 (Kt) MALINDA Measured 65 - - - - Indicated 10.4 0.1 12 122 1.3 Inferred 7.1 0.1 7 156 1.1 Total Resource 17.5 0.1 19 136 2.4 CORPORATE PRESENTATION NOVEMBER 2025 22 Note: Reported inside a RPEEE pit shell and below a 0.5% Li2O cut-off. Tonnages and grades have been rounded to reflect the relative uncertainty of the estimate. Inconsistencies in the totals are due to rounding. GROUP MINERAL RESOURCE ESTIMATES Tantalum Mineral Resource Estimates ASX: DLI deltalithium.com.au IMPORTANT NOTICES AND DISCLAIMER CORPORATE PRESENTATION NOVEMBER 2025 23 You must read the following notices before reading or making any use of this document or any information contained in this document. By continuing to read, use or otherwise act on this document, you agree to be bound by the following terms and conditions, including any modifications to them. This presentation (Presentation) has been prepared by Delta Lithium Limited (ACN 107 244 039) (ASX:DLI) (the Company or Delta). Summary information This Presentation contains summary information about the Company and its activities current as at the date of release. The information in this Presentation is of a general nature and does not purport to be complete nor does it contain all information which a prospective investor may require in evaluating a possible investment in the Company or that would be required in a prospectus or product disclosure statement prepared in accordance with the requirements of the Corporations Act. The historical information in this Presentation is, or is based on, information that has been released to the ASX. This Presentation should be read in conjunction with the Company's other periodic and continuous disclosure announcements lodged with the ASX, which are available at www.asx.com.au. The information in this Presentation remains subject to change without notice. Any market and industry data that may be used in connection with this Presentation may have been obtained from research, surveys or studies conducted by third parties, including industry or general publications. None of the Company, its representatives or advisers have independently verified that market or industry data provided by third parties or industry or general publications. Not an offer This Presentation is not an offer or invitation to acquire securities or any other financial products and is not a prospectus, product disclosure statement or other offering document under Australian law (and will not be lodged with ASIC) or any other law. This Presentation is for information purposes only and is not an invitation or offer of securities for subscription, purchase or sale in any jurisdiction. This Presentation is not and should not be considered an offer or an invitation to acquire securities or any other financial products and does not and will not form any part of any contract for the acquisition of securities. Not financial product advice This Presentation does not constitute financial product or investment advice or any recommendation to acquire securities or accounting, legal or tax advice. It has been prepared without taking into account the objectives, financial or tax situation or needs of individuals. Before making an investment decision, prospective investors should consider the appropriateness of the information having regard to their own objectives, financial and tax situation and needs and obtain legal and taxation advice appropriate to their jurisdiction. Delta is not licensed to provide financial product advice in respect of the securities or any other financial products. Investment risk An investment in securities is subject to investment and other known and unknown risks, some of which are beyond the control of Delta including loss of income and principal invested. The Company does not guarantee any particular rate of return or performance or any particular tax treatment. Effect of rounding A number of figures, amounts, percentages, estimates and calculations of value in this Presentation are subject to the effect of rounding. Past performance Investors should note that past performance and any pro forma financial information given in this Presentation is given for illustrative purposes only and should not be relied on as (and is not) an indication of Delta’s views on its future financial performance or condition. Prospective investors should note that past performance, including past share price performance, of Delta cannot be relied on as an indicator of (and provides no guidance as to) future performance including future share price performance. The historical information in relation to Delta included in this Presentation is, or is based on, information that has previously been released to the market. Forward-looking Statements and aspirational targets Some statements in this Presentation regarding estimates or future events are forward-looking statements. They include indications of, and guidance on, future matters. 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 and risks that could cause actual results to differ from anticipated results and may cause Delta’s actual performance and results (and other forward-looking statements) to materially differ from any projections of future performance or results expressed or implied by such forward-looking statements. Readers should not place undue reliance on such forward-looking information. There can be no assurance that forward-looking statements will prove to be correct This Presentation may include aspirational targets. These targets are based on management’s expectations and beliefs concerning future events as of the time of the release of this Presentation. Targets are necessarily subject to risks, uncertainties and other factors, some of which are outside the control of Delta that could cause actual results to differ materially from such statements. DISCLAIMER ASX: DLI deltalithium.com.au IMPORTANT NOTICES AND DISCLAIMER CORPORATE PRESENTATION NOVEMBER 2025 24 JORC and Listing Rules Compliance Statement Information in this Presentation that relates to exploration results is based upon work undertaken by Mr. Shane Murray, a Competent Person who is a Member of the Australasian Institute of Geoscientists (AIG). Mr. Murray has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he 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’ (JORC Code). Mr. Hughes is an employee of Delta and consents to the inclusion in this Presentation of the matters based on his information in the form and context in which it appears. Past Exploration Results and Mineral Resource estimates reported in this Presentation have been previously prepared and disclosed by Delta in accordance with the JORC Code. The information in this Presentation that relates to: ► exploration results are extracted from Delta’s ASX announcements of: a) 19 October 2022 and entitled “Maiden Lithium Mineral Resource Estimate at Mt Ida“, and for which the consent of the Competent Person, Mr Matthew Boyes, was obtained; b) 27 February 2023 entitled “Yinnetharra results confirm extensive near surface strike”, and for which the consent of the Competent Person, Mr Charles Hughes, was obtained; c) 3 April 2023 entitled “Scale of the Yinnetharra Project continues to grow”, and for which the consent of the Competent Person, Mr Charles Hughes, was obtained; d) 8 May 2023 entitled “Further shallow thick high-grade Lithium from Yinnetharra”, and for which the consent of the Competent Person, Mr Charles Hughes, was obtained; e) 8 August 2023 entitled “Drilling update for Mt Ida Lithium”, and for which the consent of the Competent Person, Mr Charles Hughes, was obtained; f) 21 August 2023 entitled “Excellent Yinnetharra Initial Metallurgical Results and Drilling Update” and for which the consent of the Competent Person, Mr Charles Hughes, was obtained, g) 4 September 2023 entitled “High grade gold results offer complementary cashflow opportunity at Mt Ida” and for which the consent of the Competent Person, Mr Charles Hughes, was obtained, and h) 14 March 2024 entitled “Yinnetharra Exploration Update” and for which the consent of the Competent Person, Mr Charles Hughes, was obtained. i) 22 April 2024 entitled “Company Update and First Jameson Result” and for which the consent of the Competent Person, Mr Charles Hughes, was obtained. j) 2 August 2024 entitled “Mt Ida and Yinnetharra Exploration Update” and for which the consent of the Competent Person, Mr Shane Murray, was obtained k) 27 August 2024 entitled “Delta advances Mt Ida Gold Project” and for which the consent of the Competent Person, Mr Shane Murray, was obtained l) 14 November 2024 entitled “Mt Ida Exploration Update” and for which the consent of the Competent Person, Mr Shane Murray, was obtained m) 24 January 2025 entitled “Mt Ida Exploration Update” and for which the consent of the Competent Person, Mr Shane Murray, was obtained MAY 26 March 2025 entitled “Mt Ida Gold Exploration Results and Permitting Update” and for which the consent of the Competent Person, Mr Shane Murray, was obtained ► mineral resource estimates are extracted from Delta’s ASX announcements of a) 19 October 2022 and entitled “Maiden Lithium Mineral Resource Estimate at Mt Ida“, and for which the consents of the Competent Persons, Ms Justine Tracey and Mrs Christine Standing, was obtained; b) 3 October 2023 ASX announcement entitled “Mt Ida Lithium Project Mineral Resource Estimate upgrade” and for which the consent of the Competent Persons, Ms Susan Havlin and Dr Andrew Scogings was obtained; c) 11 October 2023 ASX announcement entitled “Mt Ida Maiden Gold Mineral Resource Estimate” and for which the consent of the Competent Persons, Mr Michael Andrew was obtained; d) 27 December 2023 ASX announcement entitled “Yinnetharra Lithium Project Maiden Mineral Resource Estimate”, and for which the consent of the Competent Persons, Ms Susan Havlin and Dr Andrew Scogings was obtained. e) 28 June 2024 ASX announcement entitled “Major Upgrade for Mt Ida Gold Resource” , and for which the consent of the Competent Persons, Mr Michael Andrew was obtained. f) 31 March 2025 ASX announcement entitled “Yinnetharra Lithium/Tantalum MRE Update” , and for which the consent of the Competent Persons, Ms Susan Havlin and Dr Andrew Scogings was obtained g) 29 April 2025 ASX announcement entitled “Mt Ida Gold Resource Update & Proposed Demerger” , and for which the consent of the Competent Persons, Mr Michael Andrew was obtained h) 13 November 2025 ASX announcement entitled “ Mt Ida Lithium and Rubidium MRE” , and for which the consent of the Competent Persons, Ms Susan Havlin and Mr Nick Vines was obtained The Company confirms that it is not aware of any new information or data that materially affects the information included in these market announcements. The Company confirms that the form and content in which the Competent Person’s findings are presented here have not been materially modified from the original market announcements, and all material assumptions and technical parameters underpinning Mineral Resource Estimates in the relevant market announcement continue to apply and have not materially changed. Refer to www.deltalithium.com.au for details on past exploration results and Mineral Resource estimates. JORC Code differs from reporting requirements in other countries It is a requirement of the ASX Listing Rules that the reporting of ore reserves and mineral resources in Australia comply with the 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, 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 or (ii) Item 1300 of Regulation S-K, which governs disclosure of mineral reserves in registration statements filed with the US Securities and Exchange Commission. Information contained in this Presentation describing mineral deposits may not be comparable to similar information made public by companies subject to the reporting and disclosure requirements of other countries. You should not assume that quantities reported as “resources” in this Presentation will be converted to reserves under the JORC Code or any other reporting regime or that Delta will be able to legally and economically extract them. COMPETENT PERSON STATEMENT