Mackay Gold & Silver Corp. · TSXV:MACK
Mackay Gold & Silver — Investor Presentation (September 2026)
22 slides from Mackay Gold & Silver's investor presentation, Sep 15, 2026
Slide 1: Reawakening the Comstock
TSX-V: MACK | OTCQB: MKGSF REAWAKENING THE COMSTOCK ONE OF AMERICA’S RICHEST HISTORIC MINING DISTRICTS SEPTEMBER 15, 2026
Slide 2: Disclaimer
DISCLAIMER No person should make any investment decision in relation Mackay All forward‐looking information contained in this presentation is given Gold & Silver "Mackay," or the “Company”) based solely on this as of the date hereof and is based on the opinions and estimates of presentation. This pr
Slide 3: The Opportunity
The Opportunity WORLD-CLASS SIZE OF MARQUEE TOP MINING DISTRICT THE PRIZE MANAGEMENT JURISDICTION One of the world’s Target >5Moz Proven mine Comstock District, great epithermal finders with deep Nevada gold-silver systems Initial focus on the experience and Highway access, parallel, historically kn
Slide 4: Capital Structure
Capital Structure Commenced trading April 24, 2026 Shareholders Capitalization and Balance Sheet Institutional 30% Shares I&O 87.7 M Backed by Options1 5.7 M Leading Institutions RSUs 2.1 M Warrants2 0.3 M Retail/Other Shares Fully Diluted 95.5 M 56% Cash US$38 M C$53 M Market Capitalization (@ US $
Slide 5: Leadership Team
Leadership Team A leading Nevada exploration team Darwin Green MSc., PGeo Jeff Pontius, MSc Ron Ho, CPA, CA, CFA Ron Largent, P.Eng., MBA Michael Gray, MSc CEO & Director Chairman (Independent) Director (Independent) Director (Independent) Director (Independent) Dr. Moira Smith, PGeo David Rhys MSc.
Slide 6: Comstock Lode – America's Highest Grade +8Moz Gold District
Comstock Lode – AMERICA’S HIGHEST GRADE +8Moz GOLD DISTRICT GOLD SILVER 8.2M OZ 192M OZ 35 G/T 726 G/T historic historic production production GRADE ENDOWMENT EXTENT >10x the avg. UG >10Moz >1km deep, >5km global mine grade Gold Equivalent long & 10’s of m thick Comstock District mackay gold & silve
Slide 7: Fragmented claim parcels a barrier to modern exploration – until now
underexplored in modern times 1859 1926 PRESENT discovered last major UG modern district operations consolidation FRAGMENTED CLAIM PARCELS A BARRIER TO MODERN EXPLORATION – UNTIL NOW 1878 era claim map of Comstock District mackay gold & silver |TSX-V:MACK |OTCQB: MKGSF 7
Slide 8: An iconic district – all under one roof
an ICONIC district – all under one roof CONSOLIDATION KEY TO UNLOCKING MODERN EXPLORATION OF THE COMSTOCK DISTRICT ▪ Many companies own a district-scale property, there are few that own an actual District ▪ Mackay controls all major historical mines within the District – a first in the Comstock Dist
Slide 9: What we own
What we own 16.5KM OF EPITHERMAL VEINS (LODES) ▪ Comstock Lode (6km) ▪ Occidental-Brunswick Lode (4.5km) ▪ Silver City Lode (6km) ~2MOZ IN HISTORICAL ESTIMATES1 ▪ Lucerne & Dayton gold deposits (605koz M&I + 297koz Inf) ▪ UCM & Merger Mine deposit (~1Moz at 5 g/t AuEq2, 1920’s era) PERMITTED HEAP LE
Slide 10: An economic powerhouse
An economic powerhouse Longitudinal section showing the Comstock Lode’s bonanza deposits COMSTOCK BONANZAS GENERATED MORE THAN $55 BILLION1 IN MODERN VALUE LOOKING WEST Ophir Bonanza 0.17M tons Wells Haulage Tunnel $0.83B Au $3.51B Ag Chollar – Potosi Bonanzas Sutro Tunnel 0.56M tons $0.54B Au $0.35
Slide 11: Exploration Strategy
EXPLORATION Strategy Path to building a multi-million-ounce resource base 1 OCCIDENTAL SOUTH – HIGH-GRADE SHALLOW OXIDE ▪ Shallow, high-grade oxide Au-Ag zone ▪ Proof of concept – first drill holes returned 59.4 m at 1.00 g/t Au, 47.2 m at 1.15 g/t Au, 48.8 m at 0.97 g/t Au, open in all directions ▪
Slide 12: 2026 Phase Drill Program - Occidental
2026 PHASE 1 DRILL PROGRAM - occidental Systematic exploration of the Occidental-Brunswick Lode – fully funded to significantly expand scale RC DRILLING AT OCCIDENTAL SOUTH CORE DRILLING AT SUTRO TARGET 15,000 m: Underway (over 5000m complete) 5,000 m: Underway Target: Shallow high-grade oxide gold
Slide 13: Comstock Lode Long Section – 8.2 Moz Au and 192 Moz Ag
COMSTOCK LODE LONG SECTION – 8.2 Moz Au @ 35 g/t and 192 Moz AG @ 726 g/t Big Bonanza 1.1Mt @ 87 g/t Au & 1834 g/t Ag 1 KM 8.2 MOZ AU Sutro Tunnel 192 MOZ AG NEWLY ACQUIRED GROUNDS 4.5 KM Mackay Property OCCIDENTAL-BRUNSWICK LODE LONG SECTION – 1 KM Brunswick Mine 6000 2026 Shallow RC Occidental Min
Slide 14: Occidental South – strong first drill results
Occidental south – strong First drill results Zone expanded by 250m nearly doubling strike length to 550m with thick oxide intersections grading ~1 g/t gold Mineralization open in all directions Reawakening the Comstock | mackay gold & silver Long section A–A’ for Occidental South drill area, lookin
Slide 15: Occidental South – zone is associated with strong gold-in-soils
Occidental SOUTH – zone is associated with strong GOLD-IN-SOILS Initial 1000m x 400m Drill Target Area OCCIDENTAL SOUTH DRILL PLAN ▪ Very strong gold-in-soil anomaly on trend of known mineralization; expansion of soil survey underway ▪ First drill results confirm excellent correlation between strong
Slide 16: Lucerne and Dayton Deposits – oxide gold and silver
LUCERNE AND DAYTON DEPOSITS – oxide GOLD AND SILVER Recently acquired gold-silver deposits defined by historical estimates (SK1300), open to expansion Planning underway for bringing into compliance as resource estimates under NI43-101 includes potential confirmation and expansion drilling Lucerne De
Slide 17: Comstock Lode – residual 'low' grade mineralization
Comstock Lode – residual ‘low’ grade mineralization In the 1920s – 60 Years after mining began, companies returned to define ~1 Moz of residual “low grade” mineralization in the upper Comstock 5-6MT ~1 MOZ 5.0 G/T Historical 1920’s estimated residual historical gold recovered gold era ‘reserve’ equi
Slide 18: Comstock Lode – residual 'low' grade mineralization
Comstock lode – residual ‘low’ grade mineralization Strong evidence there is more to be found UCM and Merger Mines’ historical 1920’s era “reserve bodies”1 were defined by thousands of underground channel samples and meticulously documented on level plans and cross sections, which Mackay is incorpor
Slide 19: 24 month plan to position Mackay as the leading Nevada gold explorer
24 month plan to position mackay as the leading Nevada gold explorer Targeting a 2-3 Moz AuEq near-term resource base with path to >5Moz TARGET Phase I Drilling: Phase II & III Drilling : OCCIDENTAL/ Occidental South Oxide expansion Expansion and definition of Oxide Zone and Occidental mid-depth bon
Slide 20: One of the last great American gold silver districts to see modern exploration
ONE OF THE LAST GREAT STRONG AMERICAN GOLD SILVER DISTRICTS BALANCE SHEET TO SEE MODERN EXPLORATION USD$38M LAND CONSOLIDATION KEY LEADING NEVADA TO UNLOCKING THE DISTRICT EXPLORATION TEAM TSX-V: MACK | OTCQB: MKGSF
Slide 21: Appendix – structural model and district undiscovered bonanzas
Appendix – structural model and District Undiscovered bonanzas ▪ Characteristics of the known bonanzas are the blueprint for locating additional bonanzas ▪ Steeper angle, hanging wall veins and faults have the potential to control bonanzas proximal to the low angle lodes ▪ Target by: ▪ Compiling his
Slide 22: Appendix – American Flats heap leach processing facility
Appendix American Flats heap leach processing facility (included in acquisition that closed August 24, 2026) FULLY PERMITTED 4500 TPD PROCESS FACILITIES ▪ Two-stage crushing circuit, including agglomeration drum and stacker, a heap leach facility, and a Merrill Crowe processing facility ▪ Facilities
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