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TSX TLG OTCQX CHXMF FSE CM5R Fact Sheet Q2 2024 Fact Sheet Q3 2025 A Generational Scale Asset in a Tier 1 Jurisdiction THE TROILUS GOLD COPPER PROJECT VALUE PROPOSITION Favourable Mining Jurisdiction ESG Leadership Quebec ranked 5 globally by the Fraser Institute in 2023 ECOLOGO certified UNGC member Large Mineral Resource Quality Brownfield Site 11 21 Moz AuEq Ind 1 80 Moz AuEq Inf Among the largest undeveloped Au Cu deposits in N A Past producing mine 1996 2010 US 500M of inherited infrastructure 2024 Feasibility Study One of Canada s largest future gold copper operations 22 year 303 000 oz AuEq 2 2B 536 400 oz AuEq Avg Annual Production LOM Mine Life 74 900 WMT Avg Annual Production LOM Peak Annual Production Yr 7 Cumulative After Tax FCF 135 4 Mlbs CuEq Avg LOM annual production See AuEq disclosure at www troilusgold com AuEq production assumed a 92 recovery rate for all metals CuEq recovered metal assumes a 92 recovery rate for all metals SHARE STRUCTURE As of May 22nd 2025 Shares Outstanding Warrants Options RSU s 52 week high low Market Capitalization July 2nd 2025 Cash Marketable Securities January 31 2025 384M 41 01M Nil 20 4M 0 25 0 72 C 265M C 20 5M ANALYST COVERAGE Richard Gray Cormark Allison Carson Desjardins Pierre Vaillancourt Haywood Ron Stewart Red Cloud Securities Paul O Brien Velocity Trade Not including VanEck investment of 5 8m announced Feb 6 2025 8 Management Insiders SHARE OWNERSHIP 64 384M Institutional 50 Global Funds SHARES OUTSTANDING OF WHICH 28 Retail Other 12 ARE QUEBEC BASED To the best of Troilus knowledge

FEASIBILITY STUDY OVERVIEW PRODUCTION ECONOMICS Mine Life Daily Mill Throughput Annual Mill Throughput Avg Annual Metal Production Payable Years 1 5 Years 6 22 Life of Mine 22 years 50 000 tpd 18 3Mt year Gold Copper Silver koz 256 2 241 2 244 6 Mlbs 16 1 17 7 17 3 koz 475 2 438 3 446 4 Base Case Au 1 975 oz Cu 4 05 lb Ag 23 oz After tax NPV5 After tax IRR Payback 884 million 14 5 7 years 380 Mt containing 7 26 Moz AuEq Probable Reserves 6 02 Moz Au 484 Mlbs Cu 12 2 Moz Ag 0 59 g t AuEq Probable Average Grades 0 49 g t Au 0 058 Cu 1 0 g t Ag Strip Ratio Avg LOM Gold Copper Silver Recoveries 3 1 1 92 7 91 8 91 9 COST METRICS Initial Capital Expenditure Sustaining Capital Expenditure All in sustaining cost life of mine 1 074 million 276 6 million 1 109 oz INFRASTRUCTURE US 500M OF INHERITED VALUE MINE SITE LAYOUT Qualified Person This fact sheet reflects the technical information presented in the May 14 2024 press release Nicolas Guest P Geo Exploration Manager at Troilus Gold and Kyle Frank P Geo VP Exploration at Troilus Gold both of whom are Qualified Persons as defined by NI 43 101 have reviewed and approved the written disclosure in this presentation Board of Directors Chantal Lavoie Hon Pierre Pettigrew Diane Lai Fran ois Biron Brigitte Berneche Justin Reid Thomas Olesinski Senior Management Justin Reid CEO Director Andy Fortin Denis Rivard Susanna Milne Chris Sharpe Jacqueline Leroux J r me Girard Catherine Stretch Kyle Frank Contact Us Brianna Davies Daniel Bergeron Ian Pritchard Caroline Arsenault 715 Sq Victoria Suite 705 Mtl QC H2Y 2H7 1 647 276 0050 or info troilusgold com troilusgold com Follow Us