Goldquest Mining Corp. · TSXV:GQC
Goldquest Mining — Investor Presentation (September 2025)
28 slides from Goldquest Mining's investor presentation, September 2025
Slide 1: An Emerging Gold-Copper Developer with Exploration Upside in the Dominican Republic
An Emerging Gold-Copper Developer with Exploration Upside in the Dominican Republic CORPORATE PRESENTATION | SEPT 2025
Slide 2: Forward-Looking Statements
FORWARD-LOOKING STATEMENTS This presentation, and the information contained herein, has been provided to you by GoldQuest Mining Corp. (“GoldQuest” or the “Company”) solely for information purposes. While the information contained in this presentation is believed to be accurate, GoldQuest expressly
Slide 3: Developing Romero and Unlocking the Next Discovery
GOLDQUEST Developing Romero and Unlocking the Next Discovery ▪ Romero Au/Cu discovery (2012) with multi-million-ounce potential. ▪ 2025 Milestones: Environmental and Social Impact Assessment (“ESIA”) started Aug 2025 and Bankable Feasibility Study (“BFS”) for completion in H1 2026. ▪ Latest PFS No
Slide 4: Romero Project Location
ROMERO PROJECT LOCATION The Dominican Republic Changes to the Dominican environmental regulations made in 2024 removed the requirement for presidential approval of the Environmental Terms of Reference Romero is strategically application. positioned to benefit from DR’s robust economic GQC received t
Slide 5: Exploring the Tireo Belt
EXPLORING THE TIREO BELT +250 km long belt hosting high-grade Au-Cu mineralization Underexplored Belt with +5 Moz Au endowment: ▪ Total endowment of the belt is ~ 5 Moz Au + unknown or unreported endowment in Haiti (former Newmont projects) TSXV: GQC ▪ Our concessions holds significant potential to
Slide 6: Management Team and Board of Directors
MANAGEMENT TEAM BOARD OF DIRECTORS Veteran Team with DR Experience Technical & Financial Expertise Luis Santana, CEO Frank Balint, Chair - P.Geo • Veteran mining executive >35 years incl. INMET, • Former CEO Cardinal Namdini – Ghana director of Dore Copper. • Former CEO Veladero – Argentina • Former
Slide 7: Romero: Gold-Copper Starter Mine
ROMERO Gold-Copper Starter Mine 2016 PFS mine plan considers 35% of current Indicated Mineral Resource(1) Remaining Mineral Resources ▪ 2,800 tpd – 75% Longhole ▪ Large Stopes (up to 20m x 20m x 50m) ▪ Options to expand mine as metal prices rise (1)Refer to “Romero Mineral Resource Estimate” in the
Slide 8: Romero PFS
ROMERO PFS 2016 Prefeasibility Study Provides Conservative Base Case at Current Prices – Rerate Opportunity NPV 5% * IRR* AISC* PAYBACK The planned 2,800 tpd underground mine focuses on the high-grade gold and $203M 28% $595/OZ 2.5 YRS copper “core” of Romero AFTER TAX Produces saleable copper AuEq.
Slide 9: The Romero Project: Responsible Mine Design
THE ROMERO PROJECT PFS: Responsible Mine Design to Continue into BFS Minimal Surface Impact ▪ Small surface footprint over underground mine, thus minimal affect on landscape Return Wasterock Underground ▪ 65% of waste rock will be returned underground as backfill No use of Cyanide ▪ A gold/copper co
Slide 10: Focused on Responsible Development
FOCUSED ON RESPONSIBLE DEVELOPMENT Commitment to Social & Community Development ▪ Strengthening relationships with local communities through sustainable initiatives. ▪ Sponsoring the province’s eco-tourism development plan, fostering economic diversification. ▪ Leading a reforestation program for th
Slide 11: GoldQuest Capital Structure
GOLDQUEST CAPITAL STRUCTURE Strong Support from In-Country Investors Shareholders Share Information TSXV:GQC Dominican Republic Group Market Capitalization** ~C$208 M 20.4% Shares Outstanding (Basic) 341,023,141 Shares Outstanding (Fully Diluted) 363,943,140 Retail C$27.6 M Agnico Eagle Cash* 41.4%
Slide 12: Romero Development
ROMERO DEVELOPMENT Permitting in the Dominican Republic Advancing the Romero Project – Sedgman and SRK Engaged for BFS ▪ Developing a streamlined, scalable mining plan – a 7 Mt Mineral Reserve with a simple, efficient “starter mine” approach (1). ▪ 2016 PFS outlined a ramp-accessed underground mine,
Slide 13: GoldQuest Romero Project PFS (2016)
GOLDQUEST ROMERO PROJECT PFS (2016) Romero Mineral Reserve Estimate Mine Reserves Tonnes Au Ag Cu Au Eq⁽¹⁾ (1) Au equivalent metal prices: Au $1,300/oz Cu $2.50/lb Ag $20.00/oz (Cutoff $70 NSR)⁽²⁾ (g/t) (oz) (g/t) (oz) (%) (M lb) (g/t) (oz) (2) Cutoff NSR metal prices: Cu Au $1,250/oz $2.50/lb Ag $1
Slide 14: Exploration
EXPLORATION Tireo Belt Concessions The Romero Project is only part of GoldQuest’s emerging Tireo Mining District Romero Project TSXV: GQC goldquestcorp.com | 14
Slide 15: Ongoing Exploration Program
ONGOING EXPLORATION PROGRAM Unlocking our full value ▪ +37 Km long property holding with Romero Reserves potential to deliver growth to our investors. ▪ Targets occur along the mineralized Romero South Resources trend hosting the Romero Deposits and the Cachimbo Discovery. ▪ These deposits occur in
Slide 16: Geological Model of the Tireo Belt
GEOLOGICAL MODEL OF THE TIREO BELT Gold-Rich VMS Clan 167.5 g/t Au at surface Au Zn-Au Au Au Cachimbo Zn-Au Discovery Cu-Au Romero Project Cu-Au Cu-Au Image modified from Dubé, B; Gosselin, P; Mercier- Langevin, P; Hannington, M; Galley, 2007. Mineral deposits of Canada: a synthesis of major deposit
Slide 17: Project Portfolio
PROJECT PORTFOLIO Strategic Road to Discovery ▪ Reserves: Romero (7 Mt @ 3.72 ppm Au, 4.33 ppm Ag and 0.88% Cu, or 4.9 ppm AuEq – 1.117 MOz) ▪ Resources: Romero and Romero Sur (Total indicated 20.23 Mt @ 3.48 ppm AuEq – 2.265 Moz AuEq, Total Inferred 3 Mt @ 2.47 ppm AuEq – 0.24 Moz AuEq) ▪ Advanced
Slide 18: Romero: Mineral Reserves Open at Depth
ROMERO Mineral Reserves – Open at Depth ▪ Additional drilling planned to unlock Romero full value. ▪ Drilling at depth along plunge planned for 2025. ▪ Metallurgical and Geotechnical drilling will be completed to support BFS efforts. Open at Depth and to NW along the plunge TSXV: GQC goldquestcorp.c
Slide 19: Romero Gap Target
Romero Reserves ROMERO GAP TARGET GAP Target New Drill Test Concept: ▪ GAP Target is between Romero and Romero South: ▪ High chargeability anomaly. ▪ ZTEM low resistivity at depth. Romero South ▪ Locally magnetometry NW trending (~Romero). Resources ▪ Historical drilling ended up in high-grade miner
Slide 20: 2025 Exploration Program
2025 EXPLORATION PROGRAM Exploring the Tireo Belt ▪ 2025 Exploration program started in April ▪ Up to 5,000 metres of drilling across five priority VMS targets starting in Q3, GQC’s first drilling since 2018: ▪ Los Ganchos, ▪ Cañada La Vaca, ▪ Los Mineros, ▪ Cachimbo SE, and ▪ Cachimbo NW ▪ Compleme
Slide 21: Cachimbo
2017 VMS Discovery - the sub-seafloor CACHIMBO copper-gold rich feeder system, analogous to the core of Romero, has not Open along trend and plunge – 3D View yet been located at Cachimbo. ▪ Cachimbo VMS zone returned high grades of precious and base metals on three horizons ▪ Located 20.5 km south o
Slide 22: Cachimbo: Targeting Our Next Mineral Resource
CACHIMBO Targeting to Our Next Mineral Resource ▪ A large, >7.5 km anomalous corridor encompasses Cañana La Vaca, Los Ganchos and Cachimbo. ▪ Earlier drilling discovered a new, high- grade target at Cachimbo ▪ At Cachimbo, we are now focused on delivering value by additional drilling to delineate a
Slide 23: Our Vision for the Belt
OUR VISION FOR THE BELT 100% Owned 50 km Long Land Position Reactivating Exploration in the Tireo Belt ▪ Advancing exploration following the promising Cachimbo discovery (2017). ▪ Resuming drilling in multiple high-potential targets across the Tireo Belt. ▪ First drilling since the 2018 campaign pla
Slide 24: GoldQuest: Summary and Catalysts
GOLDQUEST: SUMMARY AND CATALYSTS Advancing Strategic Asset and Restarting Exploration ▪ With strong local and government support, Romero is now advancing to feasibility ▪ District upside: 50-km district-scale trend anchored by existing Romero and Romero South resources. ▪ Financial position and back
Slide 25: Peer Comparison
PEER COMPARISON EV/Au Eq. M&I Resources (US$/oz) Au Eq. M&I Grade 3.4 0.5 2.1 1.2 0.8 1.0 0.5 0.4 3.5 1.6 1.0 1.0 (g/t) $383 $364 Peer Median: $124/oz $202 $182 $169 $124 $117 $111 $59 $20 $20 $17 G2 Cabral Omai AbraSilver Lavras Meridian Sonoro Rio2 GoldQuest Unigold TriStar Belo Goldfields Sun Not
Slide 26: Thank You
THANK YOU Contact Information Corporate Head Office Telephone: (809) 385-2260 Luis Santana, CEO (809) 224-0629 lsantana@goldquestcorp.com Deborah Honig, IR Deborah@adcap.ca General Email investorrelations@goldquestcorp.com Share Information For up to date share information, please visit our website
Slide 27: Romero Mine After-Tax NPV and IRR Sensitivity to Gold Price
ROMERO MINE After-Tax NPV & IRR Sensitivity to Gold Price 2016 PFS Highlights After Tax NPV5% After Tax IRR $350 35% Low Capex, High IRR, Scalable Deposit $300 30% After Tax NPV5% (US$M) PFS SummaryResults PFS Summary Results $250 25% At At US$1300 Au/ /US$2.50.lb US$1300 Au US$2.50.lbCu Cu After Ta
Slide 28: 50 km Tireo Project Potential
50 KM TIREO PROJECT POTENTIAL How Does Romero Help to Find More Gold? RESISITIVITY MAG MAPPING IP CHARGEABILITY LOW LOW RHYOLITES+ HIGH ALTERATION Romero Romero South TSXV: GQC goldquestcorp.com | 28
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