Desoto Resources Ltd. · ASX:DES
Desoto Resources — Investor Presentation (October 2025)
21 slides from Desoto Resources's investor presentation, Oct 14, 2025
Slide 1: Corporate Presentation: DeSoto raises A$14m as drilling underway in the Siguiri Basin
OC T OBER 2025 | D ESOT OR ESO UR C ES. COM | ASX: DES Corporate Presentation: DeSoto raises A$14m as drilling underway in the Siguiri Basin Guinea’s Siguiri Basin Dominant Land Position Drilling imminent Elephant Country
Slide 2: Important Notices & Disclaimer
Important Notices & Disclaimer DeSoto Resources Limited ACN 658 510 242 (DeSoto or the Company) is the issuer of this presentation. The issue of this presentation is intended only for the person or entity to which it has been transmitted. These presentation materials and any accompanying verbal pres
Slide 3: One of West Africa's most accomplished teams returns to the Siguiri Basin
One of West Africa’s most accomplished teams returns to the Siguiri Basin Dominant 1,000km2 Historic Guinea's Siguiri Basin, one high-grade of the largest landholders & shallow drill hits NDI-02 18m @ 11.8 g/t Au (48m) incl. 1m @ 78.84 g/t Au (50m) Guinea’s golden team 3m @ 40.4 g/t Au (62m) Former
Slide 4: What's new: exploration, assays and alliances
What’s new: exploration, assays and alliances FUNDED FOR EXPLORATION ACROSS TWO CONTINENTS Fortuna Alliance Drilling now underway in Spectrum Drilling (Siguiri Basin, Guinea) Guinea (NT, Australia) Binding HOA executed with TSX-listed $14m strategic placement Exploration just got interesting Fortuna
Slide 5: Pro-Forma Capital Structure and Major Shareholders
Pro-Forma Capital Structure THE LEAD ERS IN WEST A FR I CA N GOLD D ISC OVER Y Subject to completion of the $14m Placement Announced 9 th October 2025 Share price (@ 10th Oct 25) $0.21 Paul Roberts Chris Swallow DES FPOS 276.7M Non-Executive Chairman Managing Director (post settlement of T1/T2 plac
Slide 6: Before Bankan, this team found gold all over West Africa
Before Bankan, this team found gold all over West Africa Other gold discoveries made by PDI with Paul Roberts as MD Ferkessedougou North (now ASX:MPK) 45m @ 3.16g/t Au (45.9m) incl. 9m @ 10.31g/t Au Boundiali (now ASX:AUE) 30m @ 8.30g/t Au & 28m @ 4.04 g/t Au Bongou 184,000Oz at 2.58g/t Au DE SOTO R
Slide 7: Supercharged Exploration in Guinea's Siguiri Basin
Supercharged Exploration in Guinea’s Siguiri Basin ONE OF THE WORLD’ S MOST PROLI FIC YET UND ER EXPLORED GOLD M IN IN G REGI ONS Binding HOA with TSX-listed Fortuna Mining Corp. executed September 20251 70/30 JV focused on Guinea’s Siguiri Basin DeSoto’s existing 100%-owned tenements excluded Fortu
Slide 8: Hunting for gold in elephant country
Hunting for gold in elephant country HOSTS SEVERAL OPERATING MINES AND MAJOR NEW DISCOVERIES In focus DeSoto Projects Dadjan & Tole Large gold-in soil anomalies Timbakouna 6km of unexplored strike with associated artisanal workings DE SOTO RE SO UR CE S. COM • ASX:DES 8
Slide 9: Drilling underway at Dadjan
SI GUIR I PROJECT S Drilling underway at Dadjan 1ASX Announcement: Results Confirm New and Coherent Zones at Tole (30 th September 2025)
Slide 10: Dadjan Project
SI GUIR I PROJECT S Dadjan Project 3.6 km-long NE-trending mineralised corridor at Dadjan Main Zone confirmed by trenching and mapping Rock-chip samples up to 18.44 g/t Au1 Channel highlights include1: • 6 m @ 1.17 g/t Au (incl. 2 m @ 2.1 g/t); and • 2 m @ 3.95 g/t Au Initial RC drilling scheduled t
Slide 11: Tole Project
SI GUIR I PROJECT S Tole Project 8.5 km east of the 3.6km-long Dadjan gold anomaly 2.3 km coherent gold-in-soil corridor mapped at NE Tole Key sampling results1: • 7.10 g/t Au (RK30005) • 3.05 g/t Au (RK30020) • 4.21 g/t Au (RK30019) • 3.41 g/t Au (RK30023) Soil and dump sampling is ongoing. NE Tole
Slide 12: Timbakouna Project
SI GUIR I PROJECT S Timbakouna Project Large untested N-S gold trends 6 km of strike covered by artisanal workings Historic drilling limited to the NE corner retuned high-grade gold1: • 18m @ 11.8 g/t Au from 48m (NDI-02), incl. - 1m @ 78.84 g/t Au from 50m, and - 3m @ 40.4g/t Au from 62m • 4m @ 10.
Slide 13: Ongoing Regional Exploration
Ongoing Regional Exploration Ongoing work over 934 km² Siguiri landholding with active programs across Tole, Moiko, Alamakono, Oromo, Falama and Dabidiana Broader reconnaissance advancing (artisanal mapping & BLEG) at Kassa Est, Mini, Oromo, Syncerus, Kantoumanina, Falama, Gbonko 2 & Balandougou DE
Slide 14: Strategic approach to gold discovery
Strategic approach to gold discovery The Siguiri Basin is both strongly gold- mineralised and very underexplored Minerals system approach Rolling out broad scale structural targeting across the portfolio Effective geochemistry bulk leach extractable gold (BLEG) stream sediment, soil geochemistry & p
Slide 15: Big next 6 months: investing in greenfields exploration
Big next 6 months: investing in greenfields exploration 10,000 m drilling program underway at Dadjan, Tole and Timbakouna, further power auger and soil sampling programs also underway at Tole, and soil sampling planned at Timbakouna Regional exploration early-stage exploration across Moiko, Alamakon
Slide 16: Guinea: An Emerging Mining Power House
Guinea: An Emerging Mining Power House Attracting major global investment for a rapidly expanding mining industry Simandou is the largest mining project in construction globally at >US$21B1 Uninterrupted mining by global groups for over 40 years Est mining code & fiscal regime Mining is a nationally
Slide 17: For Further Info
October 2025 D ESOT OR ESO UR C ES. COM ASX: DES FOR FURTHER INFO Chris Swallow E: cs@desotoresources.com PLEASE CONTACT Managing Director P: +61 412 174 882 Guinea’s Siguiri Basin Dominant Land Position Drilling imminent Elephant Country
Slide 18: Spectrum Project, Northern Territory
Spectrum Project, Northern Territory (DES earning into 70%) Shear-hosted REE-Au-Cu potential across one of Australia’s great underexplored mineralised shear zones DE SOTO RE SO UR CE S. COM • ASX: DES 18
Slide 19: Forward Program, Spectrum
Forward Program, Spectrum 2025 DRILLING PROGRAM COMPLETED, ASSAY COMING Ten (10) RC/DD holes drilled (totaling 4,298 m) across the Spectrum Project Sulphides intercepted over multiple intervals Assay results anticipated in October/ November 2025. Fig.1 – Photographs of diamond drill core from sulphi
Slide 20: DE SOTO RE SO UR CE S. COM • ASX: DES
DE SOTO RE SO UR CE S. COM • ASX: DES
Slide 21: Spectrum Project
Spectrum Project 8KM-LONG COPPER- I N - S OI L A N O MA L Y O V E R LA Y I N G E M C ON D UC T O R S & HISTORIC REE DISCOVERY, LOCATED INSIDE FENTON PROJECT Project Timeline 2025: Sulphides Drill permitted intercepted, REE received critical DES Acquired after change assays pending minerals designati
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