Announcement PDF CORPORATE PRESENTATION TRIBECA FUTURE FACING COMMODITIES CONFERENCE APRIL 2025 ASX: DLI deltalithium.com.au MAJOR SHAREHOLDERS CORPORATE OVERVIEW 23% CAPITAL STRUCTURE 42% SHARES ON ISSUE 716.5M PERFORMANCE RIGHTS 14.8M OPTIONS 12.0M MARKET CAP A$125.4M1 CASH A$70.7M2 ENTERPRISE VALUE A$54.7M RESEARCH COVERAGE PROVIDED BY: 1. Closing Price A$0.175 cps 28 March 2025 2. Cash Balance as at 31 December 2024 2 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au 12% 1% 11% 11% Mineral Resources 22.9% Idemitsu 12.0% Hancock Prospecting 10.7% Waratah 10.7% Board and Management 1.5% Other 42.2% REVIEW OF OPERATIONS Key Projects Lithium Operating Mine Lithium Resources Lithium Resources Estimates (<5Mt) Ports Total Lithium/Tantalum Resources 36.5Mt @ 1.1% Li2O and 54Mt @ 126ppm Ta2O5 Mt Ida Gold Resource 6.6Mt @ 3.5g/t Au for 752,000 ounces 3 ASX: DLI 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 CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au 21.9Mt @ 1.0% Li2O PROVEN EXPERIENCE IN PROJECT DELIVERY OUR BOARD Nader El Sayed Non-Executive Chairman James Croser Managing Director Joshua Thurlow Non-Executive Director ► Current Managing Director of Multiplant Holdings – a mining and civil services provider ► 25+ years operational, technical and management experience in the Australian mining sector ► 20+ years experience in mining and resources across Asia Pacific, Africa & North America ► Background in risk management, corporate governance, strategy and finance ► Mining Engineering background ► ► Founding Director of Delta Lithium Background in corporate strategy, social responsibility, business development and growth and operations leadership 4 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Tim Manners Non-Executive Director ► ► 25+ years experience in corporate finance, accounting and business development functions in the resources sector Held senior financial positions in various sectors including precious and base metals, industrial minerals and bulk commodities Steve Kovac Non-Executive Director ► Current CEO of Idemitsu Australia ► 23+ years experience in the mining sector ► Held Senior Management and Executive level roles for the past 14 years RAPID DEVELOPMENT OF WESTERN AUSTRALIAN ASSETS Our Team ► ► Experienced resource professionals with Life of Mine vision ► ► 5 ASX: DLI ► Seasoned Lithium and Gold explorers Mt Ida ► Major Shareholders All Mining Approvals in place Lithium/Tantalum MRE 14.6Mt @ 1.2% Li2O and 191ppm Ta2O5 Gold MRE 6.6Mt @ 3.5g/t Au for 752koz ► ► ► Yinnetharra ► Lithium/Tantalum MRE ► Exploration and development programs Dominant landholding ► CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Substantial investments by proven lithium miners, multinationals and investors Location 21.9Mt @ 1.0% Li2O and 39.4Mt @ 102ppm Ta2O5 Two JORC Lithium Resources Global MRE 36.5Mt @ 1.1% Li2O WA the Hard-rock Lithium Capital of the World Upcoming Catalysts ► ► ► Exploration results incoming Mining and Metallurgy Studies Progressing Mt Ida Gold value-add MT IDA LITHIUM & GOLD PROJECT VALUE CREATION IN THE GOLDFIELDS 6 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MT IDA PROJECT OVERVIEW Unique Deposit Geology – Lithium & Gold adjacent High-grade LCT pegmatites at Sister Sam, Timoni & Sparrow 14.6Mt @ 1.2% Li2O for 433kt LCE includes Indicated Resources of 7.8Mt @ 1.3% Li2O & 224ppm Ta2O5 High-grade lode Gold in a Proven Gold District 6.6Mt @ 3.5g/t Au for 752,000 oz includes the high-grade Baldock Deposit 4.82Mt @ 4.4g/t Au for 674,000 oz MRE’s ON GRANTED MINING LEASES MINING APPROVALS IN PLACE WORKS APPROVAL FOR PROCESSING PLANT LODGED 7 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MT IDA GOLD RESOURCE ► High-grade Mineral Resource – Mt Ida is one of the very few, large, high-grade undeveloped gold projects in WA ► Significant Exploration Upside – RC & Diamond drilling underway to extend current resources and test highly prospective regional targets ► World-class Location – Tier 1 location, in the heart of WA’s Eastern Goldfields ► Clear Pathway to Production – The Mt Ida Gold Project is situated on granted Mining Leases, fully permitted and shovel-ready ► Development & Infrastructure Options – potential as standalone operation given scale and grade or flexibility to toll treat given proximity to existing plants 8 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MT IDA GOLD RESOURCE Mt Ida Gold Mineral Resource Estimate Indicated Cut off Deposit Inferred Tonnes Grade Ounces Tonnes Grade Ounces Tonnes Grade Ounces (000s) g/t Au (000s) (000s) g/t Au (000s) (000s) g/t Au (000s) 500 0.5 8 500 0.5 8 Mt Ida Tailings All Baldock 1,525 4.9 242.0 3,292 4.1 432 4,817 4.4 674 Kestrel - - - 790 1.7 43 790 1.7 43 Golden Vale - - - 496 1.7 27 496 1.7 27 1,525 4.9 242.0 5,078 3.1 510 6,603 3.5 752 Total 9 ASX: DLI Total CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MT IDA GOLD RESOURCE EXTENSIONS Targeted Gold drilling has nearly completed ► ► 4-Stage program 3540,000m RC & DD commenced 3Q24 Target Baldock MRE extensions & high-grade shoots, then regional ► Seeking to build ‘stand-alone’ scale ► MRE update 2Q25 then ► Infill drillout phase to enable Resource-Reserve conversion 10 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MT IDA RECENT GOLD RESULTS Numerous results1 outside the current Baldock MRE ► 3m @ 18.2 g/t Au from 283m in IDRD364 ► 1.54m @ 37.3 g/t from 367.9m in IDRD325 ► 6m @ 13.4 g/t Au from 91m in IDRD389 ► Including 3m @ 25.1g/t Au from 92m ► 1.2m @ 10.1 g/t Au from 410.5m in IDRD333 ► 7m @ 2.9 g/t Au from 17m in IDRD368 ► 2m @ 9.3 g/t Au from 83m in IDRD309 ► 1m @ 6.5 g/t Au from 197m in IDRD310 ► 5m @ 4.7 g/t Au from 38m in IDRD321 ► Including 2m @ 10.3g/t Au from 38m 1. Refer to ASX announcement 14 Nov 2024 “Activities Update from Mt Ida Gold Project”, and ASX announcement 23 Jan 2025 “Mt Ida Exploration Update”, and ASX announcement 26 Mar 2025 “Mt Ida Gold Exploration and Permitting Update” 11 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MT IDA GOLD RESOURCE - Baldock Metallurgy Grind-size variability testwork yields favourable results ► Baldock 5 Main Lodes 086, 090, 100, 110, 140 amenable to standard crush/grind/CIL adsorption ► Representative samples composited with good spatial variability ► 24hr leach recoveries avg.+90% ► Copper does not appear problematic 12 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Meteor North 140 Lode Underground 090,100,110 Lodes 086 Lodes See Next Slide See Next Slide See Next Slide MT IDA GOLD RESOURCE - BALDOCK METALLURGY Meteor North 140 Lode Meteor North Open Pit & Underground Oxide Transitional Fresh 13 ASX: DLI Underground 090,100,110 Lodes Grind Size (P80) micron Calc head grade (g/t) Gravity Gold (%) 24-hr Au Extraction (%) 140 2.6 18 93 106 2.6 18 95 75 2.4 20 140 3.4 106 086 Lodes Grind Size (P80) micron Calc head grade (g/t) Gravity Gold (%) 24-hr Au Extraction (%) 140 8.3 27 94 106 7.0 32 93 95 75 7.4 30 96 18 85 140 15.0 47 95 3.3 18 88 106 30.8 23 94 75 3.3 19 95 75 15.4 45 96 140 5.1 33 84 140 v6.2 33 88 106 5.9 29 87 106 6.1 33 89 75 5.6 30 89 75 5.9 34 91 CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Underground Master Composites 090 Lode 100 Lode 110 Lode 086 Open Pit & Underground Oxide Transitional Fresh Grind Size (P80) micron Calc head grade (g/t) Gravity Gold (%) 24-hr Au Extraction (%) 75 4.8 44 98 140 4.8 60 95 106 4.7 65 99 75 6.1 63 99 140 4.6 52 94 106 4.4 58 97 75 3.0 57 96 MT IDA GOLD REGIONAL ► ► Numerous high-grade historical gold intercepts along +20km perimeter of Copperfield Granite Strategic geographical position in the Eastern Goldfields corridor - 6+ processing plants within 200kms ► 12,000m regional RC is stage 4 of current program ► Early results1 from stage 4: HoleID Prospect From Width (m) g/t BYRD027 Bombay JPEX008 Jupiter WKEX025 West Nell WKEX034 West Nell WKEX039 West Nell WKEX040 West Nell 148 45 67 74 56 150 3 1 5 6 2 7 7.9 64.0 5.76 4.41 4.07 2.01 1 Refer ASX Announcement 26 March 2025 titled “Mt Ida Gold Exploration and Permitting Update” 14 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Plan view of regional prospects in relation to Baldock with some recent significant Intercepts YINNETHARRA LITHIUM PROJECT GROWING A DISCOVERY IN THE EMERGING GASCOYNE PROVINCE 15 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au YINNETHARRA LITHIUM PROJECT SOLID PROGRESS AT YINNETHARRA ► ► Delta is centre-stage in a newly emerging Gascoyne Lithium Province JORC Lithium MRE at Malinda 21.9Mt @ 1.0% Li2O (at a 0.5% Li O cut-off grade) 2 ► ► ► Dominant 1,769km2 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% Li O cut-off grade) 2 ► Tantalum firming up as a promising value-add 16 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au YINNETHARRA LITHIUM PROJECT JORC LITHIUM MRE AT MALINDA ► 21.9Mt @ 1.0% Li2O (at a 0.5% Li2O cut off)1 Li Yinnetharra Cut-off Resource category Tonnes Grade Li2O Grade (Li2O%) (Mt) (% Li2O) (Kt) (Ta2O5 ppm) Measured - - - - Indicated 16.1 1.0 158 77 5.8 0.9 54 69 21.9 1.0 212 75 Inferred 0.5 1. Refer to ASX announcement 31 March 2025 “Yinnetharra Lithium and Tantalum MRE Update” ASX: DLI Ta2O5 Grade Total Resource 17 Li2O CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au MALINDA PROSPECT ► ► ► ► ► 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 18 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au 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 MALINDA PROSPECT Metallurgy testwork progression for M1 pegmatite Grades Units Batch Locked Cycle Pilot Plant Feed Grade %Li2O 1.0 1.0 1.0 Concentrate Grade %Li2O 6.0 5.5 5.7 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 Recovery Breakdown Pilot plant spodumene flotation circuit during operation 19 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au YINNETHARRA LITHIUM PROJECT ► 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 Spatial relationship Lithium and Tantalum 20 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au YINNETHARRA LITHIUM PROJECT EXPLORATION PROGRAM 2025 ► Regional field work commenced CY2025 including soil sampling and mapping to target new Prospects ► Geotechnical drilling across Malinda completed ► Scheduled heritage, flora and fauna surveys ► Focus on hydrogeology with seismic survey planned for April ► Regulatory Approvals & Native Title discussions ongoing ► Follow-up drilling at Jameson a high priority 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 21 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au THE DELTA STRATEGY PLAN FOR SUCCESS – EXECUTE THE PLAN STRONG FOCUS ON CAPITAL ALLOCATION & CASH PRESERVATION BUILDING UPON CONFIDENCE AT YINNETHARRA GOAL IS TO DEVELOP AN OPERATING MINE MOVING TOWARDS MONETISING GOLD TO FUND GROWTH OPEN TO ACQUISITIONS THAT COMPLIMENT OUR STRATEGY 22 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Premium Locations ► Hardrock Lithium Capital of the World Our Team ► Results driven with proven hardrock lithium experience Major Shareholders ► Proven hardrock lithium partners Yinnetharra ► JORC Lithium resource 21.9Mt @ 1.0% Li2O Mt Ida Upcoming Catalysts ► Exploration results incoming and JORC resource updates ► Mining and metallurgy studies progressing ► Bluesky upside via Gold ► ► 23 ASX: DLI Tier one potential with Dominant Landholding under-explored New Discovery at Jameson CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au ► ► ► JORC Lithium resource 14.6 Mt @ 1.2% Li2O JORC Gold resource 6.6Mt @ 3.5g/t Au for 752koz Mining Approval granted Thank you. 24 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au GROUP MINERAL RESOURCE ESTIMATES Lithium Mineral Resource Estimates Resource Category Yinnetharra Mt Ida Total Measured Total Indicated Total Inferred Total Measured Indicated Inferred Total Resource Measured Indicated Inferred Total Resource Delta Lithium Group Mineral Resource Estimate Li2O Cut-off grade Tonnes Grade (%Li2O) (Mt) (%Li2O) - Li2O (Kt) - Grade (Ta2O5 ppm) - 16.1 5.8 21.9 7.8 6.8 14.6 23.9 12.6 36.5 158 54 212 104 76 180 262 130 392 77 69 75 224 154 191 125 115 121 0.5 0.5 1.0 0.9 1.0 1.3 1.1 1.2 1.1 1.0 1.1 Notes: Tonnages and grades have been rounded to reflect the relative uncertainty of the estimate. Inconsistencies in the totals are due to rounding. Refer to ASX announcement 31 March 2025 “Yinnetharra Lithium and Tantalum MRE Update” Refer to announcement 3 October 2023 “Mt Ida Lithium Project Mineral Resource Estimate upgrade” 25 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au GROUP MINERAL RESOURCE ESTIMATES Mt Ida Gold Mineral Resource Estimate Deposit Indicated Tonnes (000s) Inferred Grade g/t Au Total Ounces (000s) Indicated Tonnes (000s) Inferred Grade g/t Au Total Ounces (000s) Indicated Tonnes (000s) Inferred Grade g/t Au Total Ounces (000s) Baldock 1,345 4.9 209.0 1,512 3.2 158 2,857 4.0 367 Open cut Au 0.5 g/t Kestrel - - - 570 1.6 29 570 1.6 29 0.0 g/t Au Cut off Golden Vale Mt Ida Tailings Baldock 180 5.8 33.0 496 500 1,780 1.7 0.5 4.8 27 8 274 496 500 1,960 1.7 0.5 4.9 27 8 307 Underground 1.5 g/t Au Kestrel - - - 220 1.9 14 220 1.9 14 - - - All Golden Vale Mt Ida Tailings Baldock 1,525 4.9 242.0 500 3,292 0.5 4.1 8 432 500 4,817 0.5 4.4 8 674 Kestrel - - - 790 1.7 43 790 1.7 43 Golden Vale - - - 496 1.7 27 496 1.7 27 1,525 4.9 242.0 5,078 3.1 510 6,603 3.5 752 Cut off Total Refer to ASX Announcement 28 Jun 2024 “Major Upgrade to Mt Ida Gold Resource” 26 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au GROUP MINERAL RESOURCE ESTIMATES Tantalum Mineral Resource Estimates Yinnetharra Tantalum ONLY Resource March 2025 Area Resource category Cut-off grade (Ta2O5ppm) Measured MALINDA Indicated Inferred Total Resource 65 Tonnes (Mt) Li2O% Li2O (Kt) Ta2O5 ppm Ta2O5 (Kt) - - - 10.4 0.1 12 122 1.3 7.1 0.1 7 156 1.1 17.5 0.1 19 136 2.4 - 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. 27 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au BALDOCK ‘5 MAIN LODES’ RESOURCE TABLE Indicated Cut off OP Au 0.5 g/t UG 1.5 g/t Au All 28 ASX: DLI Inferred Total Deposit Tonnes (000s) Grade g/t Au Au Ounces (000s) Grade Cu Tonnes Cu % Tonnes (000s) Grade g/t Au Au Ounces (000s) Grade Cu Tonnes Cu % Tonnes (000s) Grade g/t Au Au Ounces (000s) Grade Cu Tonnes Cu % 086 Lodes 213 3.61 26 0.07 0.2 31 1.00 1 0.06 0.0 243 3.3 26 0.08 0.2 Lode 090 14 3.86 1.8 0.03 0.0 124 3.14 12 0.01 0.0 138 3.21 14 0.01 0.1 Lode 100 145 12.76 60 0.44 0.6 92 9.01 27 0.37 0.3 237 11.31 86 0.41 0.9 Lode110 250 6.97 56 0.43 1.2 127 5.34 22 0.40 0.5 377 6.42 78 0.42 1.7 Lode 140 191 5.37 33 0.18 0.3 128 4.65 19 0.14 0.2 319 5.09 52 0.17 0.5 086 Lodes 12 2.88 1 0.19 0.0 48 5.37 8 0.16 0.1 60 4.9 9 0.05 0.1 Lode 090 53 7.85 13 0.38 0.2 313 8.40 85 0.34 1.1 366 8.36 98 0.25 1.3 Lode100 28 10.37 9 0.39 0.1 225 6.86 50 0.26 0.6 253 7.25 59 0.34 0.7 Lode 110 15 7.48 4 0.55 0.1 114 6.47 24 0.43 0.5 129 6.6 28 0.44 0.6 Lode140 11 2.68 1 0.14 0.0 218 3.77 26 0.12 0.3 229 3.72 27 0.12 0.3 086 Lodes 225 3.57 27 0.07 0.2 79 3.80 9 0.12 0.1 303 3.62 35 0.08 0.3 Lode090 67 7.00 15 0.30 0.2 437 6.90 97 0.24 1.1 504 6.89 112 0.25 1.3 Lode100 173 12.40 69 0.43 0.7 317 7.50 77 0.30 0.9 490 9.18 145 0.37 1.6 Lode110 265 7.00 60 0.44 1.3 241 5.90 46 0.41 1.0 506 6.50 106 0.43 2.3 Lode140 202 5.20 34 0.18 0.3 346 4.00 45 0.13 0.5 548 4.51 79 0.14 0.8 Total 932 6.80 205 0.28 2.7 1,420 6 273.7 0.25 3.5 2,352 6.3 477 0.27 6.2 CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au BALDOCK METALLURGY COMPOSITE RESULTS 086 Lode Comp ID TRANSITIONAL GOLD ORE MASTER COMPOSITE # 2 FRESH GOLD ORE MASTER COMPOSITE # 3 ASX: DLI NaCN (ppm) Assay Calc. Grav 8-hr 24-hr IM2078 75 1000 4.55 / 3.55 4.76 44.14 84.20 86.93 91.40 IM2190 140 1000 8.73 / 4.13 4.84 IM2191 106 1000 IM2079 75 1000 IM2192 140 1000 IM2193 106 IM2080 75 Test ID OXIDE GOLD ORE MASTER COMPOSITE # 1 29 Grind Size P80 (μm) CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Reagents (kg/t) 48-hr Tail Au Grade (g/t) NaCN Lime 97.83 99.26 0.04 0.54 7.43 60.38 92.21 93.68 93.68 95.04 95.04 0.24 0.74 9.22 4.70 64.64 94.26 98.78 98.78 100.18 98.83 0.06 0.56 8.22 3.44 34.78 95.39 97.07 99.95 99.95 97.96 0.07 0.68 8.73 4.57 52.30 86.00 90.65 92.14 93.58 94.97 0.23 1.20 7.44 1000 4.40 57.51 84.17 90.61 93.71 96.70 96.70 0.15 0.96 7.80 1000 3.02 56.61 91.32 92.03 93.44 95.74 96.19 0.12 1.25 7.68 Start Head Au Grade (g/t) 3.17 / 3.83 Au Extraction (%) 2-hr 4-hr BALDOCK METALLURGY COMPOSITE RESULTS Underground 090, 100, 110 Lode Composites Comp ID CORE (UNDERGROUND) 100 GOLD ORE MASTER COMPOSITE # 2 CORE (UNDERGROUND) 110 GOLD ORE MASTER COMPOSITE # 3 ASX: DLI NaCN (ppm) IM2300 140 1000 IM2301 106 1000 IM2302 75 1000 IM2303 140 1000 IM2304 106 1000 IM2305 75 1000 IM2306 140 1000 IM2307 106 1000 IM2308 75 1000 Test ID CORE (UNDERGROUND) 090 GOLD ORE MASTER COMPOSITE # 1 30 Grind Size P80 (μm) CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Start Head Au Grade (g/t) Au Extraction (%) Reagents (kg/t) Assay Calc. Grav 2-hr 4-hr 8-hr 24-hr 48-hr Tail Au Grade (g/t) 29.5 / 11.3 / 16.2 / 7.73 8.25 27.36 55.01 69.56 84.03 93.85 95.52 0.37 0.77 2.58 6.97 32.37 65.93 76.93 88.34 92.55 95.70 0.30 1.25 2.60 7.41 30.45 65.60 77.12 90.36 95.63 95.82 0.31 1.44 3.13 15.0 46.55 68.88 85.25 92.25 95.41 96.14 0.58 0.84 2.50 30.8 22.68 41.30 47.68 51.32 93.68 98.57 0.44 0.91 2.73 15.4 45.42 77.73 87.69 93.33 95.77 97.47 0.39 0.95 3.43 6.16 33.07 72.71 82.10 85.10 87.82 89.37 0.66 1.05 3.55 6.10 33.42 75.41 83.47 87.43 89.27 91.07 0.55 1.12 3.65 5.94 34.33 79.95 85.55 89.62 91.27 93.35 0.40 1.90 3.45 22.6 / 21.4 / 6.93 / 14.2 30.1 / 27.9 / 4.45 / 6.26 NaCN Lime BALDOCK METALLURGY COMPOSITE RESULTS Meteor North 140 Lode Grind Size P80 (μm) NaCN (ppm) IM2269 140 1000 IM2270 106 1000 IM2271 75 1000 IM2272 140 1000 IM2273 106 1000 IM2274 75 1000 IM2275 140 1000 IM2276 106 1000 IM2277 75 1000 Test ID MNGC OXIDE GOLD ORE MASTER COMPOSITE # 1 MNGC OXIDE GOLD ORE MASTER COMPOSITE # 1 MNGC OXIDE GOLD ORE MASTER COMPOSITE # 1 31 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au Start Head Au Grade (g/t) Assay 2.43 / 2.48 / 2.32 / 2.27 / 2.08 3.94 / 3.98 / 3.93 / 3.46 / 3.23 7.48 / 11.4 / 5.99 / 5.60 / 5.68 Au Extraction (%) Reagents (kg/t) Calc. Grav 2-hr 4-hr 8-hr 24-hr 48-hr Tail Au Grade (g/t) 2.64 18.03 77.66 82.04 87.43 92.71 93.75 0.17 0.48 9.97 2.64 18.04 81.06 86.54 90.85 94.56 95.08 0.13 0.41 10.23 2.39 19.95 87.80 90.83 93.22 94.97 94.97 0.12 0.35 11.64 3.39 18.11 33.97 45.07 59.76 84.70 86.72 0.45 3.16 7.09 3.32 18.49 33.56 47.95 67.22 88.26 91.57 0.28 3.58 6.78 3.32 18.51 25.83 38.04 61.41 94.69 95.93 0.14 3.55 7.32 5.13 33.11 47.75 65.53 79.68 84.04 86.44 0.70 2.02 5.84 5.90 28.77 50.60 72.06 83.14 87.17 89.49 0.62 1.70 5.47 5.61 30.27 58.62 78.23 86.09 89.08 90.55 0.53 1.67 5.51 NaCN Lime IMPORTANT NOTICES AND DISCLAIMER DISCLAIMER 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. 32 ASX: DLI CORPORATE PRESENTATION APRIL 2025 deltalithium.com.au 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. IMPORTANT NOTICES AND DISCLAIMER COMPETENT PERSON STATEMENT 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: ► a) b) c) d) e) f) g) h) i) j) k) l) m) n) ► a) b) 24 January 2025 entitled “Mt Ida Exploration Update” and for which the consent of the Competent Person, Mr Shane Murray, was obtained 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 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; 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; exploration results are extracted from Delta’s ASX announcements of: 19 October 2022 and entitled “Mai