Omai Gold Mines Corp. · TSXV:OMG
Omai Gold Mines — Investor Presentation (May 2026)
29 slides from Omai Gold Mines's investor presentation, May 11, 2026
Slide 1: Rapid Discovery and Path to Development at a World Class Gold Project in Guyana
2.5 km produced 1.4 m oz produced 2.4 m oz Rapid Discovery and Path to Development at a World Class Gold Project in Guyana OMG.V OMGGF: OTCQB 1
Slide 2: Forward-looking Statements, Technical Disclosure & Cautionary Language
This presentation contains “forward-looking statements” within the meaning of applicable Canadian securities legislation. Forward-looking statements include, but are not limited to, statements with respect to the future price of gold, copper and other minerals and metals, the estimation of mineral r
Slide 3: Two World-Class Orogenic Gold Deposits at a Large Past-Producer
Two World-Class Orogenic Gold Deposits at a Large Past-Producer 8 million ounces 2.5 Moz Indicated @ 2.04 g/t Au 5.5 Moz Inferred @ 1.59 g/t Au Wenot Deposit 2.5 km Gilt Creek Deposit produced 1.4 m oz produced Shear-hosted deposit with 2.4 m oz Intrusion-hosted with wide multiple vertical gold zone
Slide 4: Omai Presents a Unique Opportunity
Omai Presents a Unique Opportunity Potential for Large-Scale, Long-life Mine with Road Access in Mining Friendly Jurisdiction Management Expertise and Track Record Significant Project Size with Further Upside • Management with decades of gold exploration, • Two large adjacent orogenic gold deposits:
Slide 5: Outstanding Track Record of Discovery & Resource Expansion
Outstanding Track Record of Discovery & Resource Expansion New! Announced April 2026: Apr. 2026 2.5 Moz Indicated @ 2.04 g/t Au 2.5 5.5 +23 % 5.5 Moz Inferred @ 1.59 g/t Au Aug. 2025 2.1 4.4 +51 % • Expanded Gold Resources by Feb. 2024 2.0 2.3 86% growth in just over 2 years • Five NI 43-101 Indepen
Slide 6: Road Access Along Guyana’s Major Trade Corridor to Brazil
Road Access Along Guyana’s Major Trade Corridor to Brazil Georgetown, Guyana Georgetown Gas to Energy Plant Planned (300 MW) Berbice Deep Water Oko-Aremu Port G2 Berbice-Linden road planned Oko-West GMIN • 10 km from major infrastructure corridor Linden • Road access to Guyana’s two largest cities P
Slide 7: Guyana: A Top Mining-Friendly Jurisdiction
Guyana: A Top Mining-Friendly Jurisdiction Pro-Mining Government • British legal framework; stable democracy since 1966 Guyana • Top 10 globally for mining investment (Fraser Institute 2025) • Long history of gold & bauxite mining; Omai’s CEO Elaine Ellingham with ~50,000 legal small-scale miners Gu
Slide 8: Proven Prolific Geology and Benefits of a Brownfields Project
Proven Prolific Geology and Benefits of a Brownfields Project The Right Geology Benefits of a Brownfields Project • Omai at the heart of the prolific Guyana Greenstone Belt • Geology hosts several >10 million oz Au deposits • Orogenic gold deposits are large and typically deep • Long history of gold
Slide 9: Omai – A Large Gold Camp with Significant Exploration Upside
Omai – A Large Gold Camp with Significant Exploration Upside GILT DEPOSIT WENOT DEPOSIT MAJOR REGIONAL SHEAR CORRIDOR Wenot -> multiple subparallel near-vertical gold zones • Wenot Shear Corridor = Regional deformation zones across >7 km, straddles contact between Volcanic rocks and Sedimentary rock
Slide 10: WENOT: Drilling Continues to Expand Limits & Upgrade for PFS/FS
WENOT: Drilling Continues to Expand Limits & Upgrade for PFS/FS Multiple Gold Zones Holes intersect multiple impressive gold zones: Volcanic-hosted zones Hole 25ODD-102 (splays) 28.04 g/t Au over 9.3m 2 8.90 g/t Au over 5.0m Dike Corridor 3.36 g/t Au over 12.5m 4.55 g/t Au over 7.0m Central Qtz Fsp
Slide 11: WENOT: Multiple Vertical Gold Zones Across Shear Corridor
WENOT: Multiple Vertical Gold Zones Across Shear Corridor 2026 MRE PIT -400m -400m -400m -400m -400m -400m -400m -400m 11
Slide 12: WENOT: Large Footprint from Surface that Extends to Depth
WENOT: Large Footprint from Surface that Extends to Depth Near-Surface (-75m) • Historic pit was small, very selective mining when gold was <$400/oz & bottomed at ~$250/oz • Significant unmined zones remain at shallow levels along strike and on flanks • West Wenot “starter pit” potential >1 Moz 76%
Slide 13: WENOT: Grades & Widths Increase with Depth
WENOT: Grades & Widths Increase with Depth 2.4 km ~ 700m Wenot Resources by 100m Vertical Slice Deep 2025 hole confirms extension of Wenot shear with gold mineralization 700m below known deposit >1.5 Moz per 100 m vertical slices, open along strike Deeper grades and widths support underground option
Slide 14: Demonstrated Depth Potential of Gold-Bearing Wenot Shear
Demonstrated Depth Potential of Gold-Bearing Wenot Shear A Gilt Gold Deposit A’ 2,014m drill hole in 2025 intersected the Wenot Hole 122 2.4 Moz past production Wenot Gold Deposit shear corridor and gold zones at -1200m depth 1.4 Moz past production ▪ Intersected 275m wide Wenot shear corridor ▪ Wen
Slide 15: GILT – Compact Underground Gold Deposit
GILT – Compact Underground Gold Deposit Shallow: 80% of resource 300-600m depth Top View Large Footprint: 500m x 275m “cylindrical” High endowment: 4,600 oz per vertical m (-300m to 275m -600m) Good grades: Average 3.3 g/t Au @ 1.5 g/t cutoff or 5.2 g/t @ 2.75 g/t cutoff (still >1moz) Compact: 500m
Slide 16: Omai Gold Deposits Show Distinct Geophysics Signatures
Omai Gold Deposits Show Distinct Geophysics Signatures “The Handle” Exploration Target • Magnetic feature on NE structure off the Wenot deposit • Magnetic high • Corresponds with deep topographic feature • Two initial holes completed, results pending Airborne Magnetics shows Omai has a Distinct Eye-
Slide 17: Expanding Key Components towards PEA and PFS
Expanding Key Components towards PEA and PFS Community Economic Tailings Redevelopment Engagement & Expansion Plans Assessment EIA Work Baseline Environmental Studies Metallurgical Gilt Creek ramp & testwork (selective, underground mine building on historical) design Rock Mechanics: Downhole 3-D Tel
Slide 18: On the Permitting Path
On the Permitting Path • Brownfield status sets different considerations • ERM International engaged & ex-Detour consultants • Applied for EIA, Terms & Scope for EIA pending • Completed Community Consultation, met with Municipal, Regional and Sr Government (Dec/Jan) • Many baseline studies already c
Slide 19: 2026 – A Catalyst-Rich Year Ahead
2026 – A Catalyst-Rich Year Ahead Significant Near-term Milestones • Updated Mineral Resource Estimate (MRE) COMPLETED • PEA – larger mine plan to incorporate Gilt Creek underground + much expanded Wenot superpit (Q3-26) • 50,000m drill program underway (Q1-26 to Q4-26) • Filling undrilled gaps with
Slide 20: Corporate Snapshot
Corporate Snapshot Capital Structure Share Price Performance Basic Shares Outstanding (M) 672 OMG.V OMGGF: OTCQB Warrants (M) 2 Options (M) 55 1 yr + 438 % Fully Diluted Shares Outstanding (M) 728 Share Price (52-week high C$2.59) C$2.59 Basic Market Capitalization (@ C$1.35B Feb 19) C$1.7B Cash Pos
Slide 21: Omai Stands Out Among the Large Undeveloped Gold Projects
Omai Stands Out Among the Large Undeveloped Gold Projects DEPOSIT GRADE (g/t) 2.0 OMAI 8.0 Moz Economic Cut-Off Grade for WENOT Open Pit Mine 0.3 g/t Au DEPOSIT SIZE (M+I+I – million oz Au) *Projects that are primarily open-pit Source: Company Reports, Cormark Securities 21
Slide 22: Undervalued Versus Tier-1 Developer Peers
Undervalued Versus Tier-1 Developer Peers ▪ Omai is significantly undervalued on a relative basis compared to global Tier-1 developer peers ▪ Omai trades at a discount to its peers and is poised to re-rate following delivery of the upcoming Omai PEA C$/oz vs Tier-1 Peers P/NAV vs Tier-1 Peers Tier-1
Slide 23: Management & Board
Management & Board Management Board of Directors Elaine Ellingham, President & CEO, and Executive Chairman Elaine has over 30 years of mining leadership spanning exploration, Derek Macpherson production, and corporate development. Former National Leader, Mining at Lead Director TSX; Lead Director an
Slide 24: CONTACT US
CONTACT US ELAINE ELLINGHAM GARY NASSIF President & CEO Corporate Development & elaine@omaigoldmines.com Technical Advisor gnassif@omaigoldmines.com JASON BREWSTER VP, Operations jbrewster@omaigoldmines.com TSX.V: OMG | OTCQB: OMGGF 24
Slide 25: Omai – Large Historical Producer Closed in Low Gold Price Era
Omai – Large Historical Producer Closed in Low Gold Price Era Gold Price Brief History: Gilt • Omai operated 1993-2005 with gold price < Creek Wenot US$400/oz • Produced 3.8 million ounces • Decision in 2003 to relocate mill to Suriname Ope (Rosebel) • Operator acquired by Iamgold 2006 • Reclaimed a
Slide 26: WENOT – Open Pit Blast Hole Data, -40m Elevation
WENOT – Open Pit Blast Hole Data, -40m elevation Plan map showing gold zones Using blast hole data 500m Felsic-Diorite dyke corridor Volcanics Sediments Sediment-hosted Zones Central Contact QFP 26
Slide 27: Wenot – Open Pit Expansion and Conversion
Wenot – Open Pit Expansion and Conversion Wenot: Drilling Achieved our Objectives Proved successful conversion: Apr. 2026 1.43 4.00 +15% • Added 483,000 ounces to Indicated which increased to 1.45 million ounces (+49%), and • Increased the grade of Indicated from 1.46 g/t Au to 1.59 Aug. 2025 0.97 3
Slide 28: Gilt – New Holes & Remodelling for PEA Mine Planning
Gilt – New Holes & Remodelling for PEA Mine Planning 3.33 g/t Au 3.22 g/t Au Apr. 2026 1.0 1.5 +28% Gilt: Refined Model & Expanded MRE by 38% Aug. 2025 1.2 0.7 • Increased overall Gilt MRE by 700,000 ounces to 2.4m oz Feb. 2024 1.2 0.7 • Refined zones to optimize mine design for PEA • Removal of lar
Slide 29: OMAI GOLD PROJECT
N GILT OMAI GOLD PROJECT DEPOSIT Guyana Dike Corridor Zone WENOT DEPOSIT CQFP Zone North Volcanic & Splay Zones Sediment-Hosted Zones SQFP Zone 29