Onyx Gold Corp. · TSXV:ONYX
Onyx Gold — Investor Presentation (November 2025)
26 slides from Onyx Gold's investor presentation, November 2025
Slide 1: November 2025 Corporate Presentation
NOVEMBER 2025 CORPORATE PRESENTATION TSXV ONYX OTCQX ONXGF www.onyxgold.com
Slide 2: Forward Looking Statements
ONYX GOLD CORP | FORWARD LOOKING STATEMENTS Forward looking statements: This presentation contains certain “forward-looking information within the meaning of Canadian securities legislation and "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform
Slide 3: Value Creation Through Exploration
ONYX GOLD CORP | VALUE CREATION THROUGH EXPLORATION DISCOVERY-FOCUSED EXPLORER IN TWO OF CANADA’S TOP GOLD JURISDICTIONS TIMMINS CAMP ONTARIO Becoming The Go-To Explorer in Canada’s #1 Gold Camp • 442 km2 land position in proven district with excellent infrastructure • Argus North – New gold discove
Slide 4: Corporate Snapshot
ONYX GOLD CORP | CORPORATE SNAPSHOT Capitalization and Balance Sheet (C$) Shareholder Registry Shares Outstanding1 85.1M 9.9% 21% Warrants Outstanding 0 TOP INSTITUTIONS 11% Options Outstanding 4.2M ($0.20 to $0.90 per share) ONYX Restricted Share Units (RSUs)2 1.7M And Others Ownership Fully Dilute
Slide 5: Why Invest in the Timmins Gold Camp
ONYX GOLD CORP | WHY INVEST IN THE TIMMINS GOLD CAMP CANADA’S PREMIER GOLD PRODUCING REGION World-Class Gold Endowment • World’s Largest Archean Orogenic Gold Camp – Produced over 76.0 Moz of Gold • >100 Years of Gold Production • Ongoing Gold Discoveries Highlight the District’s Remaining Potential
Slide 6: Excess Milling Capacity Within the Camp
ONYX GOLD CORP | EXCESS MILLING CAPACITY WITHIN THE CAMP GROWING DEMAND FOR MILL FEED TO DRIVE M&A ACTIVITY Average Milling Grade in 2024 was 2.9 g/t Au, Excluding Macassa Existing mills looking for feed significantly reduces: FY2024 Results Threshold of Discovery Ounces 16,000 Required Tonnes of Or
Slide 7: Becoming the Go-To Explorer in Timmins
ONYX GOLD CORP | BECOMING THE GO-TO EXPLORER IN TIMMINS STRATEGICALLY LOCATED PROPERTIES IN A TIER-1 MINING-FRIENDLY JURISDICTION 5+ years consolidating mining claims in prime locations at the right time in the market On or near major productive geological structures Untouched for significant
Slide 8: Munro-Croesus Property, Timmins
ONYX GOLD CORP | MUNRO-CROESUS PROPERTY, TIMMINS LARGE LAND PACKAGE WITH 3 NEW OROGENIC GOLD DISCOVERIES IN TWO YEARS Munro-Croesus Property Overview: 109 km2 land position located 75 km east of Timmins – proximal to one producing mine and two multimillion- ounce development projects Munro-Croesus P
Slide 9: Munro-Croesus Property
Croesus Munro-Croesus Property GM Vein N Pipestone Fault Arial Argus Main Argus North Argus North Drill Rig Trench Barton Creek Fault Drill Rig Wedge Fault Argus West TSXV ONYX OTCQX ONXGF 2
Slide 10: Argus North Zone
ONYX GOLD CORP | ARGUS NORTH ZONE TIMMINS CAMP’S NEWEST GOLD DISCOVERY MC24-163: 265.5 – 300.0 m – 34.5 m of 5.4 g/t Au Strong Continuity of grade throughout Argus North Highlights: Intense Silica-Albite Alteration and New gold discovery located 100 m to the north of the Pyrite Stringers in Variolit
Slide 11: Argus North Plan Map & Long Section
ONYX GOLD CORP | ARGUS NORTH PLAN MAP & LONG SECTION LATEST DRILL RESULTS TSXV ONYX OTCQX ONXGF 11
Slide 12: Argus North Trench
ONYX GOLD CORP | ARGUS NORTH TRENCH HIGH-GRADE MINERALIZATION PROJECTING TO SURFACE TSXV ONYX OTCQX ONXGF 12
Slide 13: 50,000-Meter Drill Plan for Munro-Croesus
ONYX GOLD CORP | 50,000-METER M DRILL PLAN FOR MUNRO-CROESUS Drill Plan Highlights: Near-term focus is on a 5 km trend of underexplored variolitic basalts – the same unit that hosts the Argus Main and Argus North Zones Key Objectives: • Expand Argus North along strike & plunge • Test fault-offset bl
Slide 14: An Underexplored 8 km Corridor
ONYX GOLD CORP | AN UNDEREXPLORED 8KM CORRIDOR TSXV ONYX OTCQX ONXGF 14
Slide 15: Munro-Croesus Gold Targets
ONYX GOLD CORP | MUNRO-CROESUS GOLD TARGETS NUMEROUS UNDEREXPLORED GOLD TARGETS CONSOLIDATED IN RECENT YEARS Strong Pipeline of Targets: 35+ near-surface gold prospects and occurrences with gold values ranging from 1.03 g/t Au to 41.1 g/t Au, 57.8 g/t Au, and 2,500 g/t Au TSXV ONYX OTCQX ONXGF 15
Slide 16: Argus Discovery 2.5 km Off the Highway
ONYX GOLD CORP | ARGUS DISCOVERY 2.5 KM OFF THE HIGHWAY Argus North & Argus Main Paved Road Access From Highway Black Fox Complex – 3.0 Moz Au of Production Mayfair Gold – 4.5 Moz Au TSXV ONYX OTCQX ONXGF 16
Slide 17: Yukon's Eastern Tombstone Gold Belt
ONYX GOLD CORP | YUKON’S EASTERN TOMBSTONE GOLD BELT COMMANDING LAND POSITION IN A RISING RESOURCE DISTRICT Yukon Portfolio Highlights Four gold properties, totaling 227 km2 located close to Snowline Gold’s Valley gold discovery & Fireweed Metals Macpass base metals & Mactung tungsten deposits All p
Slide 18: King Tut Property, Yukon
ONYX GOLD CORP | KING TUT PROPERTY, YUKON MULTIPLE INTRUSIVE-RELATED GOLD TARGETS King Tut Highlights 127 km2 property with multiple large-scale coincident gold-in-soil and rock geochemical anomalies associated with prospective intrusions Golden Mask, Ra, and Main Tut are the highest- priority drill
Slide 19: Ra Target
ONYX GOLD CORP | RA TARGET MULTI-KILOMETER-LONG INTRUSION-RELATED GOLD TARGET Ra Target Highlights Intrusion-related gold target covering multigenerational gold-bearing sheeted quartz veins within an exposed, 3 km by 2 km intrusion Previous drilling in 1996 returned: 21 m of 1.0 g/t Au1 * associated
Slide 20: Sheeted Vein Look-Alikes
ONYX GOLD CORP | SHEETED VEIN LOOK-ALIKES TSXV ONYX OTCQX ONXGF 20
Slide 21: Golden Mask Target
ONYX GOLD CORP | GOLDEN MASK TARGET INTRUSION-RELATED GOLD TARGET 9 KM WEST OF RA Golden Mask Highlights Large, 2,300 x 1,500 m gold-in-soil anomaly associated with a partially outcropping granitic intrusion Maiden 2023 drill program (7 holes, ~1,500) validated a bulk-tonnage reduced intrusion syste
Slide 22: 2025 Exploration Summary
ONYX GOLD CORP | 2025 EXPLORATION SUMMARY Timmins Exploration Yukon Exploration 25,000 m drill program at Munro-Croesus Analysis and interpretation of 3D inversion recently completed – 81 drill holes – 36 models made from the magnetic reported to date geophysical survey flown over King Tut 50,
Slide 23: Contact
Contact TSXV Brock Colterjohn, MBA, BSc ONYX President & CEO, Director OTCQX ONXGF Nicole Hoeller Partner, NIKLI Communications Information@onyxgold.com
Slide 24: Meet the Team
ONYX GOLD CORP | MEET THE TEAM BROCK COLTERJOHN DARWIN GREEN IAN CUNNINGHAM-DUNLOP CONOR MCKINLEY ARIS MORFOPOULOS President & CEO Executive Chairman Executive VP VP Exploration CFO 13 years of experience in Entrepreneurial mining Seasoned mining 15 years of experience Executive and equity capital m
Slide 25: Argus Main Zone
ONYX GOLD CORP | ARGUS MAIN ZONE RAPIDLY GROWING GREENFIELD DISCOVERY Croesus Mine GM Vein Discovery Argus Main Zone Highlights: N Outcropping, bulk-tonnage gold discovery hosted within highly-silicified variolitic mafic volcanics containing 1-3% sulphide stringers 15 holes (~5,400 m) completed to d
Slide 26: Argus North Cross Sections
ONYX GOLD CORP | ARGUS NORTH CROSS SECTIONS ‘Discovery Hole’ Section – Looking East 50 m Step-out Section – Looking East TSXV ONYX OTCQX ONXGF 26