Great Pacific Gold Corp. · TSXV:GPAC
Great Pacific Gold — Technical Presentation (March 2026)
67 slides from Great Pacific Gold's technical presentation, March 2026
Slide 1: Leading Gold-Copper Development in Papua New Guinea
TSX-V: GPAC OTCQX: GPGCF FSE: 0B3 Leading Gold-Copper Development in Papua New Guinea Wild Dog Project Technical Review Session 1 MARCH 2026
Slide 2: Forward-Looking Statements
Forward-Looking Statements No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained on this presentation. This presentation is not an offer to purchase securities and does not constitute an offering document under Securities legisla
Slide 3: GPAC Focus on Papua New Guinea
GPAC Focus on Papua New Guinea * Reserves + Resources ** Inferred resource Source: Reserves and Resources listed at company websites as of Jan. 20, 2026. 3
Slide 4: Major Projects - PNG
Major Projects - PNG Deposit (PNG) Company Deposit type Past production (headline) Contained metal (published) Avg grade (published) Geology / style Large alkalic epithermal system in a volcanic/caldera Lihir (New Ireland) Newmont Au (epithermal) ~0.81 Moz Au in 2024 Reserves: 17.5 Moz Au 2.51 g/t A
Slide 5: Wild Dog Location and Infrastructure
Wild Dog Location and Infrastructure • ~ 50km from Wild Dog • Access via 12km sealed Island of New Britain, PNG road & 38km Rabaul Port paved highway Kokopo Tokua • 45km from Wild Dog Airport • Multiple daily commercial flights EL2516 to Port Moresby Warangoi Hydropower Station EL2761 • Local, provi
Slide 6: GPAC Technical Leadership – Proven PNG & Global Experience
GPAC Technical Leadership – Proven PNG & Global Experience Callum Spink – VP Exploration 15+ year in exploration & resource development – Gold, Copper, VHMS, IRGS Significant experience in Papua New Guinea. Drill program planning & execution. Team leadership, mentoring & stakeholder engagement. Paul
Slide 7: Geological Context: New Guinea Orogen - A Long-Lived Accretionary Margin
Geological Context: New Guinea Orogen - A Long-Lived Accretionary Margin The New Guinea Orogen – Terrane Accretion, Compression & Continuous Magmatism Australian Passive Margin (Paleozoic–Early Cretaceous) • Northern extension of Australian craton • Thick marine sedimentary basin (Papuan Basin) Wild
Slide 8: Geological Context: Gazelle Peninsula – A Long-Lived Island Arc Corridor
Geological Context: Gazelle Peninsula – A Long-Lived Island Arc Corridor Tectonic Setting • Part of the Bismarck island arc system • Formed above active subduction of the Solomon Sea Plate Sinivit • Late Eocene to Recent calc-alkaline arc magmatism Arc Foundation & Growth (Late Eocene–Oligocene) • E
Slide 9: Wild Dog Project Structural Setting
Wild Dog Project Structural Setting Late Oligocene-early Miocene Structure - Development of the Nengmutka Vein System along major district-scale structures - Two dominant NNE-trending, sub-parallel structural corridors - Sinivit Structure: ~10 km strike, most continuous and strongly silicified/vein-
Slide 10: Wild Dog: Exploration & Development History
Wild Dog: Exploration & Development History 1940s–1983 | Discovery & Regional Exploration 1942: First recorded mineralisation at Sinivit. 1960s–1980s: Regional stream sediment, pan concentrate and mapping programs by CRA, BHP and others. 1983: Esso PNG discovers the Wild Dog epithermal gold system,
Slide 11: Wild Dog Low Sulphidation Epithermal Potential
Wild Dog Low Sulphidation Epithermal Potential The Surface Expression Example of 020°-trending, vertical Type I vein in the Sinivit Central pit and crustiform Schematic model illustrating the relations between low-and high-sulfidation chalcedonic silica bands in Type IV veins from the Central Sinivi
Slide 12: Low Sulphidation Epithermal Potential cont…
Low Sulphidation Epithermal Potential cont… WDG012 @ 179.6m 5.8m @ 6.23g/t AuEq from 177m (5.12g/t Au, 15.29g/t Ag, 0.59% Cu) Gold Silver Tellurides Coliform/Crustiform Chalcopyrite Banding Pyrite WDG012 @ 128.4m Saccharoidal Quartz 5.9m @ 14.38g/t AuEq (15.96g/t Au, 12.41g/t Ag, 0.18% Cu) Pyrite Mu
Slide 13: Wild Dog High Sulphidation Epithermal (and Hybrid) Potential
Wild Dog High Sulphidation Epithermal (and Hybrid) Potential System Complexity & Overprinting Model to account for varying hydrothermal fluids that Example of a Type I vein (yellow contribute towards the dashes) cut by Type II (orange development of hybrid high dashes) and Type III (red dashes) sulp
Slide 14: High Sulphidation Epithermal and Hybrid Potential cont…
High Sulphidation Epithermal and Hybrid Potential cont… WDG008 @ 155.5m Complex Brecciation 8.4m @ 49.9g/t AuEq from 154m (46.46g/t Au, 66.3g/t Ag, 1.69% Cu) Sulphide Vuggy Fracture Infill Chalcopyrite Gold Silver Tetrahedrite Tellurides WDG012 @ 181.3m 5.8m @ 6.23g/t AuEq from 177m (5.12g/t Au, 15.
Slide 15: Wild Dog Porphyry Cu–Au Potential
Wild Dog Porphyry Cu–Au Potential Foundation of the System Outcrop of the Magiabe monzodiorite in Magiabe creek. Note silicification of the host intrusion, and incipient breccia veins containing quartz-pyrite (boxwork) and chalcopyrite blebs. Photograph taken by the QP (Frank Bierlein) Main stages o
Slide 16: Wild Dog Stratigraphy & Major Rock Types
Wild Dog Stratigraphy & Major Rock Types Basement & Pre-Mineral Framework Late Eocene – Oligocene Island Arc Basement Baining & Merai Volcanics – volcaniclastic arc sequence Dioritic plutonism (embryonic island arc setting) Accreted Inner Melanesian Arc terranes and Regional NNW-trending extensional
Slide 17: Stratigraphy & Major Rock Types Continued
Stratigraphy & Major Rock Types Continued 17
Slide 18: Wild Dog Project: District-Scale Au–Cu Mineral System Footprint
Wild Dog Project: District-Scale Au–Cu Mineral System Footprint Regional Cu surface anomalism. Combined Soil/sediment (Cu>60ppm - Circles) and rock chips Regional Au surface anomalism. Combined Soil/sediment in ppb (Au>5ppb; Circles) and rock (Cu>100ppm - Triangles) chips in ppm (Au>0.3ppm; Triangle
Slide 19: Large-Scale Au–Cu Mineral System Footprint
Large-Scale Au–Cu Mineral System Footprint Geological map of the Nengmutka vein system, Gazelle Peninsula, east New Britain. After Lindley (1990a, 1998) 19
Slide 20: Wild Dog MobileMT – Enhancing Target Definition
Wild Dog MobileMT – Enhancing Target Definition Airborne MT Long-Section Kavursuki - Wild Dog – Regess Vein System Regional Interpretation with Lineament Analysis (Red – Sulphide, Blue - Oxide) Wild Dog and Magiabe Airborne Magnetics Image Magiabe Porphyry 3DIP Cross-Section and Funnel Shaped 20 Cor
Slide 21: Wild Dog Project Target Pipeline
Wild Dog Project Target Pipeline Reconnaissance Target Definition Objectives Conceptual ta rget d efin ed by geo physics/ge ological Detailed ta rget scale evaluation Target Testing Advanced Target interpr eta tion (mapp ing, ro ck/cha nnel Staged dr illing to establish the Resource sampling, geophy
Slide 22: Sinivit Target: High-Grade Au-Cu Exposed in Historic Pit
Sinivit Target: High-Grade Au-Cu Exposed in Historic Pit Main Vein exposed in historic Southern Pit Copper-bearing black silica and stage 3/4 quartz veining - 0.8 m @ 127 g/t AuEq (122 g/t Au, 2.7% Cu, 88 g/t Ag) - 2.4 m @ 22 g/t AuEq (17.2 g/t Au, 2.3% Cu, 94 g/t Ag) Top: Panoramic photo of Wild Do
Slide 23: Sinivit Target: Historical Resources & Reserves (Non-Compliant)
Sinivit Target: Historical Resources & Reserves (Non-Compliant) Sinivit (Wild Dog) – 1987–2006 Estimates Multiple internal and consultant resource estimates prepared during ownership changes (Esso JV, Highlands Gold, Macmin, GMNH, New Guinea Gold). These were pre-CIM / pre-JORC compliant and based o
Slide 24: Sinivit Target: Historic IP Geophysics
Sinivit Target: Historic IP Geophysics 3D IP Outcomes – Defined Sulphide Envelopes & Drill Targets Mengmut Block • Gold mineralised quartz veins associated with chargeability envelope • Broad low-intensity (≈4 ms) anomaly interpreted as: - Clay alteration - Pyrite halo • Suggested extensions of mine
Slide 25: Sinivit Target: Fluid Inclusions – A Deep, Magmatic Hydrothermal System
Sinivit Target: Fluid Inclusions – A Deep, Magmatic Hydrothermal System What Was Done Fluid inclusion studies were completed in 1992 on quartz vein samples from the Nengmutka / Wild Dog vein system. Work included: • Petrographic fluid inclusion analysis • Microthermometry measurements • Salinity and
Slide 26: Sinivit Target Drill Program
Sinivit Target Drill Program 2025 Program: 2026 Program: • 16 drill holes, ~3,000 m • Expansion of Northern Long Section Looking West Sulphide ore shoot • Discovered 2 main high-grade shoots: South Gram Meters resource (open at depth & AuEq Oxide & Northern Sulphide to north) • Identified high-grade
Slide 27: Sinivit Target – Expansion of Northern Sulphide Shoots
Sinivit Target – Expansion of Plan View Northern Sulphide Shoots Cross Sections Looking North* B C D A WDG007 10.0 meters @ 4.0 g/t AuEq WDG009 WDG008 8.4 m @ WDG015 WDG014 50.1 g/t AuEq WDG016 WDG018 13.48 m @ 9.5 m @ WDG017 8.08 g/t AuEq 13.75 g/t AuEq *Sections looking NNE +/-10m 27
Slide 28: Sinivit Target: Hydrothermal Alteration Zoning
Sinivit Target: Hydrothermal Alteration Zoning Alteration Architecture Wild Dog displays a well-developed, vertically zoned epithermal alteration system consistent with a low-sulphidation fluid regime transitioning upward and outward into overprinting events. Core Zone – Silicification • Intense sil
Slide 29: Sinivit Target: Proposed Ore Genesis
Sinivit Target: Proposed Ore Genesis Multi-Stage Hydrothermal Evolution Early Low-Sulphidation Stage – Structural Preparation • Dilute, near-neutral meteoric-dominated fluids • Quartz–adularia–illite veining (Type I milky microcrystalline quartz) • Broad silicification forming structural framework •
Slide 30: Sinivit Target : Ore Mineralogy – (Type II–IV Veins)
Sinivit Target : Ore Mineralogy – (Type II–IV Veins) - Vein-hosted Au–Cu mineralisation - Chalcopyrite-dominant sulphide assemblage± bornite, chalcocite - Minor pyrite, tetrahedrite - Gold hosted mainly in Au–Ag tellurides - Calaverite, - petzite, - Sylvanite - Native tellurium present - Micron-scal
Slide 31: Sinivit Target: High-Grade Au-Cu Mineralization – Key Intercepts
Sinivit Target: High-Grade Au-Cu Mineralization – Key Intercepts WDG-08 intercepted: 8.4 m @ 49.9 g/t AuEq from 154m (46.5 g/t Au, 1.7% Cu, 66.3 g/t Ag), Including: 3.8m @ 105 g/t AuEq from 154m (93.3 g/t Au, 6.6% Cu, 142 g/t Ag). 55.2g/t 9.2% 27g/t 1.3% 7.83g/t 12.9% 322g/t 4.3% 1.1g/t 31
Slide 32: High-Grade Au-Cu Mineralization – Key Intercepts cont…
High-Grade Au-Cu Mineralization – Key Intercepts cont… WDG-14 intercepted: 9.5 m @ 13.8 g/t AuEq from 200.77 m (12.61 g/t Au, 0.62% Cu, 14.63 g/t Ag); including: 3.9 m @ 32.16 g/t AuEq from 204.3 m (29.62 g/t Au, 1.39% Cu, 31.25 g/t Ag). 32
Slide 33: Sinivit Target: Summary of Key Intercepts to Date
Sinivit Target: Summary of Key Intercepts to Date Hole ID From (m) To (m) Interval1 (m) Gold (g/t) Silver (g/t) Copper (%) Gold Eq. 2 (g/t) WDG-02 65.00 72.00 7.00 5.49 68.84 2.96 10.93 including 65.00 67.00 2.00 10.73 114.64 2.23 15.55 WDG-03 102.00 104.30 2.30 1.68 6.48 0.12 1.94 including 103.55
Slide 34: Beyond Sinivit…15 km Structural Corridor
Beyond Sinivit…15 km Structural Corridor Gram Meters AuEq Structural Corridor - Long Section Looking West 34
Slide 35: Kavursuki Target – Extension of Sinivit Epithermal Mineralization to the North
Kavursuki Target – Extension of Sinivit Epithermal Mineralization to the North Key Geological Evidence Kavursuki Target • Historic drilling (46 holes, ~2,900m) highlights: • 15.6 m @ 2.5 g/t Au Target Overview • 17.2 m @ 5.8 g/t Au • Epithermal vein system ~1 km north of Sinivit (along same drilling
Slide 36: Kavursuki Target: IP Geophysical Interpretation
Kavursuki Target: IP Geophysical Interpretation Oblique view looking NW Kavasuki 8-10ms Sinivit (Northern 6-8ms Sulphide) Chargeability 100m under topography 3D chargeability mesh of 6-8ms and 8-10ms with historic drilling, trenching and 2026 target points (green circles) 36
Slide 37: Target Review
Target Review & ¥, Kabaifvein va g J sf - re Ge = Beans f High Priority Target - Resource Definition High Priority Target - Advanced Target 2026 Target Advancement - Advanced Target Future Target Advancement & Recon Rig1 Rig 2 37
Slide 38: Mengmut Target – High-Grade Vein at Surface
Mengmut Target – High-Grade Vein at Surface Location & Setting • Located ~1.5–2.0 km south of the Sinivit Deposit. • Part of the Wild Dog mineralised corridor. • Defined >500 m strike (mapping indicates up to ~650 m) with widths to 30 m. Outcrop Trench Geological Framework 19.1 g/t Au, 1.25% Cu 4m @
Slide 39: Mengmut Target: Exploration Strategy
Mengmut Target: Exploration Strategy Phase 1 – Refine Geometry (Now) • Detailed structural mapping • Additional rock chip sampling • Confirm east-dipping vein orientation • Define highest-grade plunge position Trench: 4m @ 2.58g/t Au Phase 2 – Initial Drill Test (Imminent) 2km radius • 3 holes (~250
Slide 40: Kasie Ridge – Lithocap Target Definition
Kasie Ridge – Lithocap Target Definition Kasie Ridge Overview & Geological Model • Largest preserved advanced argillic system identified at Wild Dog • Located at the northern end of the 15 km Wild Dog Structural Corridor • Interpreted as a structurally controlled lithocap developed above a potential
Slide 41: Structural & Geophysical Target Definition cont…
Structural & Geophysical Target Definition cont… Alteration mineral assemblage map at Kasie Ridge LiDAR-derived structural interpretation highlighting NW–NNW lineament convergence and highlighting advanced argillic zones including geomorphic features at Kasie Ridge. alunite, pyrophyllite, diaspore a
Slide 42: Magiabe Target – Southern Extension of Sinivit(?)
Magiabe Target – Southern Extension of Sinivit(?) Location & Setting High Grade Vein Outcrop • Interpreted southern extension of the Wild Dog Deposit system, located 123ppm Au, 66ppm Ag, 4.01% Cu ~700m to the NE. 137ppm Au, 76ppm Ag, 3.97% Cu • Located at the headwaters of Kamorok Creek. 113ppm Au,
Slide 43: Steel Creek Target – High-Grade Veins at Surface
Steel Creek Target – High-Grade Veins at Surface Location & Setting • Au–Cu prospect ~5.5 km SW of the Wild Dog Deposit; interpreted southern strike extension of the Sinivit Deposit. • Near the Regess intrusion, a probable magmatic source for metal leakage Steel Creek Veins at Steel Creek. Geologica
Slide 44: Wild Dog Porphyry Upside – District-Scale System
Wild Dog Porphyry Upside – District-Scale System Wild Dog – Multiple district-scale porphyry targets • Located within a proven PNG Cu–Au magmatic arc • District-scale alteration and geophysical signatures indicate fertile magmatic plumbing • Deep porphyry potential largely untested by drilling Compe
Slide 45: Wild Dog Porphyry Upside – Disciplined Target Advancement
Wild Dog Porphyry Upside – Disciplined Target Advancement Phase 1 – Target Definition & Vectoring • Corridor-scale structural and alteration mapping • Systematic rock chip and soil geochemistry (Cu–Mo–Au- Ag-Te) pathfinders) • Lithogeochemical fertility assessment (Sr/Y, Cu/Mo, Nb/Y) • Integration o
Slide 46: Magiabe Porphyry Target – Geological Framework
Magiabe Porphyry Target – Geological Framework Location & Setting • Intrusive centre within Wild Dog structural corridor • Monzodiorite stock with ~1 km magnetic footprint • Positioned along major NNE-trending structural corridor Geological Framework Wild Dog • Aeromagnetics indicate intrusive exten
Slide 47: Mt Regess Porphyry Target (South of Sinivit)
Mt Regess Porphyry Target (South of Sinivit) Location & Setting • Southern Wild Dog corridor, adjacent to Regess Mountain 5m @ 24.0g/t Au (rock chip) • Spatially associated with interpreted magnetic intrusive body 4m @ 3.40g/t Au (rock chip) • Positioned along major NNE-trending structural corridor
Slide 48: Wild Dog: World-Class Analogues
Wild Dog: World-Class Analogues This comparison benchmarks Sinivit and the broader Wild Dog corridor against well-endowed low- to intermediate-sulphidation epithermal systems globally 48
Slide 49: Wild Dog: World-Class Analogues cont….
Wild Dog: World-Class Analogues cont…. What the Global Models Show • World-class epithermal deposits are shoot-controlled systems, not uniformly mineralised veins. • Mineralisation occurs as discrete high-grade shoots within broader structural corridors. Typical shoot dimensions globally:~150m verti
Slide 50: Wild Dog: Comparisons With Other Epithermal Systems Worldwide
Wild Dog: Comparisons With Other Epithermal Systems Worldwide 50
Slide 51: Wild Dog MobileMT – AIMEX Geophysics Interpretation
Wild Dog MobileMT – AIMEX Geophysics Interpretation Scope of Work • Integrated interpretation of 2025 Airborne MobileMT, magnetics, VLFRe-interpretation of historical 2010 ground 3DIP / resistivity survey • Magnetic filtering (RTP, 1VD, AGC, TILT, Analytic Signal) • 3D voxel conductivity modelling a
Slide 52: Wild Dog MobileMT – SGC Interpretation
Wild Dog MobileMT– SGC Interpretation Scope of Work • Independent review and modelling of Airborne MobileMT dataset3D resistivity inversion modelling • Lithostructural domain interpretation • Structural corridor mapping and intrusive boundary definition • Integration with geological controls Key Tec
Slide 53: Wild Dog MobileMT – SGC Interpretation Continued
Wild Dog MobileMT– SGC Interpretation Continued Strategic Implication SGC work adds: - Structural confidence - Depth continuity modelling - Independent validation of porphyry–epithermal linkage Together with AIMEX, it provides: - A coherent 3D magmatic–structural framework from surface oxide to deep
Slide 54: SGC Interpretation Continued
SGC Interpretation Continued Top Right: RTP Magnetic image (L). Top left: RTP 2VD Analytic Signal Image with several of the discrete (NL). Bottom right: 200 m depth slice of MMT magnetic bodies interpreted as intrusives circled Bottom left: Analytic signal image (L). in yellow 54
Slide 55: Wild Dog LiDAR – Phase 1 Interpretation Update
Wild Dog LiDAR – Phase 1 Interpretation Update Survey Status • Airborne LiDAR survey completed over ~194 km² • All core LiDAR deliverables received, including: - Classified point cloud - Raster elevation products (DTM/DSM) - Accuracy and validation report (pending) - Orthophoto mosaic Phase 1 Interp
Slide 56: Wild Dog Project Exploration Strategy
Wild Dog Project Exploration Strategy Objective Establish a disciplined, data-driven pathway to advance the Wild Dog district from a collection of historical prospects into a coherent, ranked portfolio of epithermal and porphyry targets. The 2026 regional program is designed to: • Upgrade and valida
Slide 57: Wild Dog Project Technical Roadmap (Next 2–3 Years)
Wild Dog Project Technical Roadmap (Next 2–3 Years) System-Scale Vectoring & Fertility Assessment - Quantify magmatic fertility (Sr/Y, Eu anomaly, Ti/Sr, Ba/Zr, REE patterns) - Trace-element vectors: Au–Sb–As (LS) → Te–Mo–W–Cu (HS–Porphyry transition) - Vertical metal zonation modelling (Au–Ag caps
Slide 58: Wild Dog Exploration: Two-Rig Drilling Program
Wild Dog Exploration: Two-Rig Drilling Program Strategic PNG Drilling Partner – Zenex Drilling • 25+ years operating in PNG • 86% PNG national workforce • 5.06M LTI-free hours • Operational bases in Lihir and Lae Rig 1: Sandvik DE810 – Diamond/RC Rig • Primary Resource & Deep Exploration Platform •
Slide 59: Wild Dog Exploration: Community Relations
Wild Dog Exploration: Community Relations Early, Proactive Engagement GPAC hosted a major community bung at Rieit Village, bringing together thousands from the Baining and Tolai regions, local settlers, and visitors. Our Focus • Clear communication: exploration, not mining • Transparency on environm
Slide 60: Community Relations Photos
Community Relations Photos 60
Slide 61: Wild Dog Exploration: Infrastructure & Operational Readiness
Wild Dog Exploration: Infrastructure & Operational Readiness Established Base of Operations • Renovated operations house at Rieit/Accommodation infrastructure • Power/Internet • Purpose-built coreshed facility completed • Newly hand-built 60-person camp for drill expansion • Locally sourced timber a
Slide 62: Great Pacific Gold Corp
GREAT PACIFIC GOLD CORP info@gpacgold.com TSX-V: GPAC +1778 262 2331 OTCQX: GPGCF www.gpacgold.com FRA: V3H info@gpacgold.com TSX-V: GPAC +1 778 262 2331 OTCQX: GPGCF www.gpacgold.com | FRA: V3H 7
Slide 63: Kavursuki Target: Veins and Drilling Strategy
Kavursuki Target: Veins and Drilling Strategy Initial Structural Confirmation Phase • First three holes test the interpreted 55° east-dipping vein geometry • 30 m step-downs designed to confirm vertical continuity • Holes collared east of the vein to optimise true structural intercept • Drilling tar
Slide 64: Magiabe Track Update
Magiabe Track Update Track Development Progress • Tree felling commenced 7 December • ~600 m cleared (~46% of corridor) • Tree clearing nearing completion • Earthworks to commence following completion at Kavasuki Earthworks Readiness • Earthworks JSA completed • Excavator scheduled to mobilise next
Slide 65: Safety Systems – Complete & Operational
Safety Systems – Complete & Operational Raising Our Safety Standards Across PNG • WHSMS finalized and aligned with ISO45001 and PNG Mining Act • Seven structured folders: Legislation, Policies, Procedures, Registers, Forms, Contractors, Templates • Central Document Register established with over 100
Slide 66: Epithermal Shoot Target Pipeline
Epithermal Shoot Target Pipeline Kasie Rid ge Mengmut Vein Mo rgan Vein Main Cam p Langmute River Wild Dog West Cut Hand C reek 2026 Target Advancement - Advanced Target Rig 2 66
Slide 67: References
References Lihir – Epithermal Gold Operator: Newmont Corporation https://operations.newmont.com/papua-new-guinea/lihir https://www.newmont.com/investors/reports-and-filings/default.aspx https://www.sec.gov/edgar/browse/?CIK=1164727 Porgera – High-Grade Gold Operator: Barrick Gold / Zijin Mining http
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