ASX Announcement Lac Gold Limited ASX: LAC ABN 82 110 884 252 1138 Hay Street, West Perth lacgold.com Western Australia 4 June 2026 MULTIPLE EXCEPTIONAL HIGH-GRADE GOLD INTERSECTIONS CONTINUE TO EXPAND ROUYN GOLD SYSTEM Broad mineralised halos, high-grade shoots and coarse gold continue to support the interpretation of a large structurally controlled gold system at Astoria Highlights • Multiple exceptional high-grade gold intersections* : Hole ID Interval Including AS-26-793 5.65m @ 141.29g/t Au (from 148.15m) 0.5m @ 1,580.00g/t Au AS-26-792 9.10m @ 6.31g/t Au (from 123.40m) 4.00m @ 10.41g/t Au AS-26-794 9.50m @ 2.25g/t (from 178.00m) 3.00m @ 6.72g/t Au AS-26-787 97.50m @ 1.04g/t Au (from 554.65m) 17.00m @ 3.58g/t Au AS-26-788 49.95m @ 1.12g/t Au (from 623.15m) 3.75m @ 7.00g/t Au, and 14.60m @ 2.11g/t Au, and 1.00m @ 12.78g/t Au • Exceptional assay results associated with previously reported visible gold occurrence in hole AS-26-793† • Multiple samples required additional screen metallicandgravimetric analysis due to coarsegold and elevated assay values • Results continue to confirm continuity of high-grade mineralisation within the current drilling area • Broad mineralised halos and high-grade shoots are consistent with a large and evolving gold system • Initial 15,000m Phase 1 drilling campaign completed and 15,000m Phase 2 drilling underway • Two diamond drill rigs currently operating with substantial assay results still pending * Intersections expressed as downhole lengths, true widths are unknown at this stage. † Refer ASX Announcement dated 29 April 2026 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p2 Comment from Lac Gold Managing Director Lac Gold Managing Director Andrew Stocks commented: “These exceptional high-grade results materially strengthen our confidence in the scale and high- grade potential of the Rouyn gold system. Importantly, the high-grade intersections reported in this announcement are associated with broad mineralised halos and structurally controlled alteration zones, supporting our interpretation of a large and evolving orogenic gold system. The coexistence of broad mineralised envelopes and discrete higher-grade shoots continues to strengthen our confidence in the geological model and the growth potential of the Astoria deposit. The correlation between previously reported visible gold and these assay results is particularly encouraging and reinforces the significance of the mineralisation being intersected at Astoria. With the initial 15,000 metre Phase 1 drilling program completed, a further 15,000 metre Phase 2 program underway and a substantial volume of assays still pending, we believe Rouyn demonstrates the characteristics of a significant and expanding high-grade gold system.” Lac Gold Limited (ASX: LAC) (“Lac Gold” or “the Company”) is pleased to report additional assay results from its ongoing diamond drilling program at the Astoria deposit, part of the Rouyn Gold Project in Québec, Canada. Results reported in this announcement are from drill holes AS-26-787 to AS-26-794. The latest assay results continue to confirm the continuity of gold mineralisation at Astoria within the current Mineral Resource Estimate (MRE) area. Phase 1 drilling was designed to define higher-grade zones, test extensions to mineralisation along the margins of the existing block model and improve understanding of geological controls. Results continue to demonstrate both narrow high-grade intervals (>6g/t Au over 1 to 4 metres) and broader mineralised zones (2.0–3.5g/t Au over 10 to 15 metres), consistent with a large structurally controlled orogenic gold system associated with the Cadillac-Larder Lake Break. Figures 1 and 2 – Visible gold in quartz veining, drill hole AS-26-793 (~152.05m down hole), Astoria, Rouyn† ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p3 Exceptional High-Grade Results Continue to Expand Astoria Recent drilling at Astoria has intersected multiple zones of high-grade gold mineralisation associated with intense carbonate-albite-mica-tourmaline alteration, further confirming the strength and continuity of the hydrothermal system. Gold mineralisation occurs within quartz and quartz-carbonate veins, stockworks, and hydrothermal breccias hosted by ultramafic volcanic and sedimentary rocks. Highlighting the latest results, hole AS-26-793 returned 1,580 g/t Au over 0.5 metres, representing the highest-grade intercept reported to date from the current drilling campaign. The intercept was encountered along the hanging-wall contact between deformed ultramafic volcanic rocks of the Piché Group and sedimentary units of the Temiskaming Group, a favourable structural setting interpreted to include a subtle flexure of the contact. The high-grade mineralisation is located approximately 25 metres below historical underground development at a vertical depth of approximately 150 metres. It is hosted within a chlorite-silica alteration zone characterized by quartz veining and hydrothermal brecciation. Notably, the gold mineralisation is not associated with significant sulphide concentrations, highlighting the importance of alteration and structural controls in the localisation of high-grade gold within the Astoria system. Importantly, the latest drilling continues to demonstrate the coexistence of: • Broad continuous mineralised halos • Steeply plunging higher-grade shoots • Localised exceptionally high-grade gold domains. The consistency and continuity of mineralisation encountered across multiple drill holes continue to strengthen confidence in the geological model and support the interpretation of a laterally and vertically extensive gold system. These results highlight the potential for further resource growth through the expansion of known mineralised zones and the delineation of additional high-grade shoots within the deposit. Figure 3 – Astoria core being logged by Explo-Logik ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p4 Summary of Significant Intersections Hole ID From (m) Interval (m)* Au (g/t) AS-26-787 554.65 97.50 1.04 563.10 3.90 1.82 585.00 2.00 1.49 592.00 5.50 1.18 625.00 5.60 3.01 634.00 17.00 3.58 AS-26-788 623.15 49.95 1.12 625.25 3.75 7.00 649.00 7.00 2.38 699.00 14.60 2.11 699.00 1.00 12.78 706.00 3.15 4.33 746.30 12.70 0.64 747.70 2.70 2.03 756.00 1.50 1.42 AS-26-789 216.40 1.25 3.25 AS-26-790 7.50 45.50 0.70 21.00 9.00 1.83 AS-26-791 217.00 43.55 0.48 221.00 4.70 1.16 233.55 3.15 2.25 AS-26-792 123.40 9.10 6.31 126.50 4.00 10.41 AS-26-793 148.15 5.65 141.29 151.80 0.50 1,580.00 AS-26-794 178.00 9.50 2.25 181.90 3.00 6.72 255.00 17.45 0.56 262.00 2.15 2.82 In addition to the exceptional high-grade intervals, several drill holes intersected broad mineralised halos consistent with previous drilling at Astoria. These broader envelopes continue to support interpretation of a large hydrothermal gold system surrounding localized higher-grade shoots. ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p5 Coarse Gold and Analytical Follow-Up Several samples associated with the reported high-grade intersections required additional analytical follow-up, including screen metallic and gravimetric analysis, due to the presence of coarse gold and elevated assay values. The Company previously reported visible gold in hole AS-26-793† . The latest assay results correlate strongly with the observed visible gold occurrence and further support the significance of the mineralisation being intersected within the Astoria system. The additional analytical procedures extended laboratory processing times but are considered important to support representative assay reporting and quality assurance protocols. Geological Interpretation The latest drilling results are consistent with the geological model developed for Astoria and are further refining understanding of the controls on higher-grade mineralisation. Drilling completed to date continues to support the interpretation of Astoria as a large structurally controlled orogenic gold system located along the Cadillac-Larder Lake Break. The distribution of mineralisation highlights two principal controls: Hydrothermal Alteration Envelopes Broad mineralised intervals define extensive shear-hosted hydrothermal alteration zones. These zones are characterized by pervasive quartz-carbonate veining, silica flooding, iron-carbonate-sericite alteration, and disseminated pyrite-arsenopyrite mineralization developed within volcanic host rocks and along adjacent deformed sedimentary contacts. Structurally Controlled High-Grade Zones Higher-grade mineralised intervals intersected in holes AS-26-792 and AS-26-793 are associated with localized brittle structural zones interpreted to have acted as fluid-decompression pathways within the broader hydrothermal system. These structures generally dip steeply to the north and northwest and host irregular lens-shaped quartz-carbonate vein arrays developed within carbonatised ultramafic rocks of the Piché Group, as well as biotite-tourmaline altered sedimentary units. The spatial relationship between the broad alteration envelopes and discrete high-grade mineralised shoots is consistent with the structural architecture of major orogenic gold deposits. Mineralisation appears to be controlled by a principal shear zone developed along favourable stratigraphic contacts, with higher-grade gold concentrations localized within secondary and tertiary structures that provided enhanced pathways for fluid flow and gold deposition. ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p6 Drilling Program Update Status Holes Metres Drilled 45 15,259 Logged 34 9,596 Sampled & Dispatched 30 8,642 Assays Received 18 5,095 Pending at Laboratory 12 3,547 Following completion of the initial 15,000 metre Phase 1 drilling campaign, which successfully confirmed the continuity of mineralisation and strengthened confidence in the Company's geological model, the Company has commenced a further 15,000 metre Phase 2 program aimed at expanding the existing Mineral Resource Estimate at Astoria, testing the continuity and extent of mineralisation, and advancing additional targets along the Cadillac Break corridor. Drilling activities continue to focus on: • Extending known mineralisation at Astoria, with an emphasis on demonstrating the continuity of high-grade zones along strike and down-plunge • Testing the down-dip continuity of the mineralised system between depths of 400 metres and 1,000 metres • Advancing additional targets within the Cadillac Break corridor, primarily aimed at expanding and linking existing gold showings. The Company continues to incorporate incoming assay results into updated geological and structural models to refine targeting and support future resource growth assessments. Next Steps • Execution of the 15,000 metre Phase 2 drilling program aimed at extending known mineralisation at Astoria and testing additional targets along the Rouyn corridor • Compilation and validation of historical project data, including databases, geological interpretations, models, and resource estimates • Review and refinement of interpretations related to mineralised structures, host lithologies, alteration patterns, and structural controls • Concurrent multi-scale data integration and targeting studies using advanced artificial intelligence tools to identify and prioritize new exploration targets • Integration of new assay results into updated geological and structural models • Additional assay results anticipated in the near term • Continued evaluation of resource growth opportunities and potential development scenarios. • Ongoing testing of multiple exploration targets along the Rouyn corridor. ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p7 Figure 3 – Drill Hole Collar Plan, Astoria Area, Rouyn Gold Project ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p8 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p9 This announcement has been authorised for release by the Board of Lac Gold Limited. Further information Andrew Stocks Managing Director Matthew Keegan Executive Director Tel: +61 8 6184 5938 investors@lacgold.com Engage with this announcement at the Lac Gold Investor Hub. More information is available from the Company’s website. About Lac Gold Limited Lac Gold Limited is a Canadian-focused gold company advancing the Rouyn Gold Project in Québec and the Pickle Lake Gold Project in Ontario. The Rouyn Gold Project is located on the Cadillac Break within the Abitibi gold region and hosts a large existing Mineral Resource Estimate (refer ASX:ADV announcement dated 10 October 2025). The Pickle Lake Gold Project includes the historic Golden Patricia Mine and a district-scale landholding within the Uchi Geological Subprovince of Ontario. The Company is focused on disciplined project advancement through targeted exploration, technical evaluation, responsible development and strong local partnerships. Forward Looking Statements This announcement contains forward-looking statements regarding future events, including planned technical studies, metallurgical programs, optimization work, permitting activities and development outcomes. Forward-looking statements are subject to risks, uncertainties and assumptions that could cause actual results to differ materially from those expressed or implied in such statements. No assurance can be given that future studies or evaluations will support development of the Rouyn Gold Project or that anticipated outcomes will be achieved. Competent Persons Statement Rouyn Gold Project – Exploration Results The information in this report that relates to Exploration Results at the Rouyn Gold Project is based on, and fairly represents, information and supporting documentation prepared by Ms Suzie Tremblay, P.Geo., a member of the Ordre des géologues du Québec (OGQ), a Recognised Professional Organisation (RPO). Ms Tremblayisa full-time employee of Explo-Logik Inc.,an independent geological consulting firm engaged by Lac Gold Limited. Ms Tremblay has sufficient experience relevant to the style of mineralisation and type of deposit under consideration and to the activity being reported to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p10 The Competent Person has reviewed the underlying data and confirms that it fairly represents the exploration results reported. Ms Tremblay consents to the inclusion in this report of the matters basedon this information in the form and context in which it appears. Competent Person’s Statement Mineral Resource Estimate – Rouyn Gold Project, Québec The information in this announcement that relates to Mineral Resources for the Rouyn Gold Project has been extracted from the ASX announcement titled “Ardiden and Lac Gold to Create a Leading Canadian Gold Exploration and Development Company” released on 10 October 2025 and available at www.asx.com.au. Lac Gold Limited confirms that it is not aware of any new information or data that materially affects the information included in that announcement, and that all material assumptions and technical parameters underpinning the estimates in that announcement continue to apply and have not materially changed. Lac Gold Limited also confirms that the form and context in which the Competent Person’s findings are presented have not been materially modified from that announcement. Mineral Resource Estimate – Rouyn Gold Project, Québec Classification Material type Au cut- off (g/t) Tonnage (Mt) Gold (g/t) Gold Ounces (koz) Indicated Ultramafic 1.72 8.5 3.29 898 Argillite 2.07 0.7 3.43 78 Total Indicated 9.2 3.30 976 Inferred Ultramafic 1.72 5.6 3.13 565 Argillite 2.07 1.0 3.86 126 Total Inferred 6.6 3.24 690 Total Resource (Indicated & Inferred) 15.8 3.28 1,666 Note: Due to effects of rounding, totals may not represent the sum of all components. The Rouyn Gold Project currently hosts a Mineral Resource Estimate (JORC 2012), previously announced to the ASX on 10 October 2025. Recent drilling has targeted extensions beyond the current Mineral Resource envelope. ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p11 APPENDIX A: COLLAR INFORMATION FOR COMPLETED DRILL HOLES Hole ID Prospect / Target Azimuth Dip Hole Length (m) Easting (UTM NAD83 Zone 17) Northing (UTM NAD83 Zone 17) RL (m) Status AS-26-787 Astoria West 210 -80 744 645964 5340059 306 Completed AS-26-788 Astoria West 196 -86 852 645963 5340058 305 Completed AS-26-789 Astoria West 180 -55 252 645923 5339904 302 Completed AS-26-790 Astoria West 180 -45 175 645943 5339845 307 Completed AS-26-791 Astoria West 180 -65 510 645914 5339950 303 Completed AS-26-792 Astoria East 180 -45 294 646353 5339875 300 Completed AS-26-793 Astoria West 180 -65 291 645971 5339924 305 Completed AS-26-794 Astoria West 0 -65 273 645884 5339703 301 Completed APPENDIX B: DRILLING RESULTS Significant intercepts are reported using a lower cut-off of 0.2g/t Au and a minimum intercept length of 0.3m. Hole # From (m) To (m) Core Length (m) AU (g/t) AS-26-787 36.50 38.00 1.50 2.04 148.80 150.00 1.20 0.68 156.00 157.50 1.50 0.24 402.00 403.30 1.30 0.23 554.65 555.50 0.85 0.28 555.50 556.50 1.00 0.27 556.50 557.60 1.10 0.32 561.45 562.50 1.05 0.58 562.50 563.10 0.60 0.47 563.10 564.00 0.90 2.47 564.00 565.00 1.00 1.59 565.00 566.00 1.00 1.63 566.00 567.00 1.00 1.66 582.10 583.30 1.20 0.69 584.00 585.00 1.00 0.36 585.00 586.00 1.00 1.53 586.00 587.00 1.00 1.45 587.00 588.00 1.00 0.22 589.50 590.00 0.50 0.51 590.00 591.00 1.00 0.29 591.00 592.00 1.00 0.30 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p12 Hole # From (m) To (m) Core Length (m) AU (g/t) 592.00 593.00 1.00 1.44 594.00 595.00 1.00 0.71 595.00 595.50 0.50 3.52 595.50 596.50 1.00 0.42 596.50 597.50 1.00 2.03 597.50 598.50 1.00 0.76 598.50 599.35 0.85 0.34 600.00 601.00 1.00 0.32 601.00 602.00 1.00 0.33 618.70 620.00 1.30 0.21 625.00 626.00 1.00 13.70 629.55 630.60 1.05 2.95 634.00 635.00 1.00 1.88 635.90 636.60 0.70 11.50 639.00 640.50 1.50 7.84 640.50 641.40 0.90 3.20 641.40 642.60 1.20 0.69 642.60 644.00 1.40 0.78 644.00 645.25 1.25 0.39 645.25 646.30 1.05 10.00 646.30 647.50 1.20 11.20 647.50 648.70 1.20 0.83 648.70 650.00 1.30 5.86 650.00 651.00 1.00 0.99 733.00 734.00 1.00 0.23 735.90 736.95 1.05 0.33 738.00 739.00 1.00 0.31 AS-26-788 28.50 30.00 1.50 0.37 623.15 624.20 1.05 0.54 624.20 625.25 1.05 0.48 625.25 625.75 0.50 1.82 625.75 626.85 1.10 7.90 626.85 627.95 1.10 9.12 627.95 629.00 1.05 6.31 630.00 631.00 1.00 0.24 639.00 640.00 1.00 0.52 643.00 644.00 1.00 0.36 644.00 645.00 1.00 0.37 646.00 647.00 1.00 0.30 647.00 648.00 1.00 0.43 648.00 649.00 1.00 0.39 649.00 650.00 1.00 3.55 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p13 Hole # From (m) To (m) Core Length (m) AU (g/t) 651.00 652.00 1.00 3.28 652.00 653.00 1.00 3.30 653.00 654.00 1.00 1.63 654.00 655.00 1.00 0.31 655.00 656.00 1.00 4.57 656.00 657.00 1.00 0.35 657.00 658.00 1.00 0.30 659.00 660.00 1.00 1.21 660.00 661.00 1.00 0.73 661.00 662.00 1.00 0.32 662.00 663.00 1.00 0.35 663.95 665.00 1.05 0.77 665.00 666.00 1.00 0.43 666.00 667.00 1.00 0.43 667.00 668.00 1.00 0.51 668.00 669.00 1.00 0.60 671.30 672.10 0.80 1.08 672.10 673.10 1.00 1.45 677.80 678.95 1.15 0.50 693.00 694.00 1.00 0.44 695.00 695.90 0.90 0.46 695.90 696.90 1.00 0.34 699.00 700.00 1.00 12.78 705.00 706.00 1.00 0.29 706.00 706.80 0.80 4.44 706.80 707.65 0.85 7.58 708.15 708.65 0.50 3.82 708.65 709.15 0.50 3.14 710.65 711.60 0.95 2.68 711.60 712.60 1.00 1.10 712.60 713.60 1.00 0.23 742.00 743.50 1.50 0.23 747.50 748.00 0.50 0.56 748.00 748.50 0.50 3.10 749.00 749.50 0.50 0.41 749.50 750.40 0.90 3.41 756.00 757.50 1.50 1.42 783.10 783.85 0.75 0.66 787.50 789.00 1.50 0.27 789.00 790.50 1.50 0.20 AS-26-789 112.50 114.00 1.50 0.68 119.40 120.90 1.50 0.90 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p14 Hole # From (m) To (m) Core Length (m) AU (g/t) 122.30 123.40 1.10 0.22 129.40 130.90 1.50 0.24 132.40 133.70 1.30 0.45 133.70 135.05 1.35 0.29 162.00 163.50 1.50 0.31 165.00 166.50 1.50 0.27 171.50 173.00 1.50 0.22 174.50 176.00 1.50 0.35 176.00 177.50 1.50 0.26 179.00 180.50 1.50 0.31 180.50 182.00 1.50 0.30 182.00 183.50 1.50 0.67 209.60 211.10 1.50 0.76 215.20 216.40 1.20 0.44 216.40 217.65 1.25 3.25 AS-26-790 13.50 15.00 1.50 0.25 15.00 16.50 1.50 0.69 16.50 18.00 1.50 0.78 18.00 19.50 1.50 0.77 19.50 21.00 1.50 0.68 21.00 22.50 1.50 2.76 22.50 24.00 1.50 2.35 24.00 25.50 1.50 0.60 25.50 27.00 1.50 1.40 27.00 28.50 1.50 2.13 28.50 30.00 1.50 1.73 31.50 33.00 1.50 0.38 33.00 34.50 1.50 0.54 34.50 36.00 1.50 0.42 36.00 37.50 1.50 0.47 37.50 39.00 1.50 0.63 39.00 40.50 1.50 0.68 40.50 42.00 1.50 0.57 42.00 43.00 1.00 0.52 43.00 44.00 1.00 0.50 44.00 45.00 1.00 0.76 45.00 46.50 1.50 0.65 49.50 51.00 1.50 0.64 51.00 52.00 1.00 0.21 AS-26-791 47.00 48.00 1.00 0.23 76.90 77.40 0.50 0.62 88.50 90.0 1.50 0.28 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p15 Hole # From (m) To (m) Core Length (m) AU (g/t) 217.00 218.15 1.15 0.76 219.20 220.00 0.80 0.60 221.00 222.00 1.00 1.09 222.00 222.70 0.70 3.25 222.70 223.40 0.70 1.11 223.40 224.20 0.80 0.21 225.00 225.70 0.70 1.42 229.00 230.00 1.00 0.26 230.00 231.00 1.00 0.94 233.55 235.00 1.45 1.10 235.00 236.00 1.00 3.43 236.00 236.70 0.70 2.94 240.70 241.35 0.65 0.52 241.35 241.90 0.55 0.27 241.90 242.55 0.65 0.68 242.55 243.10 0.55 0.06 249.00 250.50 1.50 0.23 250.50 251.65 1.15 0.48 251.65 252.70 1.05 0.53 252.70 254.00 1.30 0.46 255.00 256.50 1.50 0.65 310.65 311.95 1.30 0.98 316.40 316.90 0.50 1.09 316.90 317.85 0.95 0.87 451.45 451.95 0.50 0.29 AS-26-792 123.40 124.85 1.45 5.84 124.85 125.80 0.95 4.69 125.80 126.50 0.70 2.90 126.50 127.00 0.50 33.10 127.00 127.50 0.50 3.82 127.50 128.15 0.65 9.66 128.15 128.65 0.50 2.47 129.20 129.70 0.50 0.42 129.70 130.50 0.80 19.30 130.50 131.40 0.90 0.40 131.40 132.50 1.10 0.41 156.00 157.00 1.00 0.42 157.90 158.50 0.60 1.56 188.70 189.20 0.50 0.22 190.30 191.40 1.10 0.23 226.75 227.25 0.50 0.28 228.15 228.90 0.75 0.23 ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p16 Hole # From (m) To (m) Core Length (m) AU (g/t) 280.00 280.50 0.50 0.32 AS-26-793 148.15 148.85 0.70 0.70 148.85 149.90 1.05 2.49 149.90 150.50 0.60 3.36 150.50 151.20 0.70 1.62 151.20 151.80 0.60 0.69 151.80 152.30 0.50 1,580.00 152.30 152.80 0.50 0.97 152.80 153.80 1.00 1.15 AS-26-794 162.90 163.45 0.55 0.18 178.00 179.00 1.00 0.28 179.00 180.50 1.50 0.26 181.90 183.00 1.10 3.18 183.00 183.70 0.70 21.30 183.70 184.90 1.20 1.45 255.00 255.80 0.80 0.57 262.00 263.05 1.05 3.52 263.05 264.15 1.10 2.15 264.15 265.20 1.05 0.28 265.20 266.00 0.80 0.21 266.00 267.30 1.30 0.49 267.30 268.25 0.95 0.46 268.25 269.20 0.95 0.26 270.00 271.50 1.50 0.33 271.50 272.45 0.95 0.37 JORC CODE, 2012 EDITION – TABLE 1 JORC Code Table 1 Criteria - The table below summarises the assessment and reporting criteria used for the Rouyn Gold Project sampling techniques and data guidelines in Table 1 of The Australasian Code for the Reporting of Exploration Results, Mineral Resources and Ore Reserves (the JORC Code, 2012). Section 1 Sampling Techniques and Data Criteria JORC Code explanation Commentary Sampling techniques • Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as downhole gamma sondes, or handheld XRF instruments, etc.). These samples should not be taken as limiting the broad meaning of sampling. • Include reference to measures taken to ensure sample representivity and the appropriate • Samples have been collected by diamond drilling techniques (see below). • Drillholes are orientated perpendicular to the interpreted strike of the mineralised trend except where limited access necessitates otherwise. • Diamond core sampled in intervals of ~1 m where possible, otherwise intervals less than 1 m selected based on geological boundaries. • The core was logged, cut, and sampled by qualified personnel at Explo-Logik core shack in Val D’Or and ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p17 Criteria JORC Code explanation Commentary calibration of any measurement tools or systems used. • Aspects of the determination of mineralisation that are Material to the Public Report. • In cases where ‘industry standard’ work has been done this would be relatively simple (e.g. ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information. samples submitted to AGAT Laboratories (AGAT) in Québec. • The same side of the core was consistently sampled to avoid selective sampling bias. • Gold was analysed by fire assay (50 g) with atomic absorption finish, while base metals were analysed by four-acid digestion with ICP-OES finish. All samples received by AGAT were crushed to 90% passing 2-10 mm mesh sieve. This was then riffle split to a 250 g sample which was pulverised to 90% passing 75 microns. • Samples with gold grades greater than 10 g/t are reprocessed using gravity finish. The processed material is split and analysed by fire assay with ICP- OES finish to extinction. A separate split is prepared to independently analyse mineralized intervals with a target grade greater than 1.00% Cu-Zn using a Na₂O₂ fusion with ICP-OES or ICP-MS finish. • All samples containing visible gold were sent for metallic screen analysis. • These techniques are considered appropriate for the mineralisation expected at all properties. Drilling techniques • Drill type (e.g. core, reverse circulation, open- hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face- sampling bit or other type, whether core is oriented and if so, by what method, etc). • All samples and geological information have been derived from diamond core using standard equipment of NQ size (47.6 mm diameter). • The drill holes were completed by Forage Val d’Or of Québec in 2026. • The drill core was oriented by Forage Val d’Or and verified by Explo-Logik of Québec. Drill sample recovery • Method of recording and assessing core and chip sample recoveries and results assessed. • Measures taken to maximise sample recovery and ensure representative nature of the samples. • Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material. • All drill core was measured and compared to actual drilled depths on a run-by-run basis by the company geologist and driller to determine core recovery and Rockmass Quality Data (RQD). Recoveries averaged higher than 98% with the only loss of material coming from the overburden. This horizon is not considered prospective for Lac Gold Limited’s purposes. • Core recovery through the mineralized zones is greater than 98%. • No sample bias was observed. Logging • Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies. • Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography. • The total length and percentage of the relevant intersections logged. • All diamond core has been marked up, inspected, logged and photographed by suitably trained and qualified personnel of Explo-Logik. • Logging detail includes depth, hole orientation, lithology, alteration, veining, mineralogy, mineralisation, RQD, magnetic susceptibility and structure. These methods involve a combination of both qualitative and quantitative determinations. • Diamond core was logged in its entirety. Sub-sampling techniques and sample preparation • If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry. • For all sample types, the nature, quality and appropriateness of the sample preparation technique. • Quality control procedures adopted for all sub- sampling stages to maximise representivity of samples. • Measures taken to ensure that the sampling is representative of the in-situ material collected, including for instance results for field duplicate/second-half sampling. • All samples have been derived from NQ diamond core and have been cut in half or quarter using a standard core saw. Foliation is aligned perpendicular to the cut. This technique is considered appropriate for the mineralisation observed at the properties. • Crushing stage duplicates have been submitted to the assay laboratory at a rate of 1:20 to evaluate the sampling technique as per standard industry practise. • Lac Gold has retained and stored all remaining half- core samples for future reference/use. • Sample preparation follows industry best practice standards and is conducted by internationally ASX Announcement ASX: LAC | lacgold.com | investors@lacgold.com p18 Criteria JORC Code explanation Commentary • Whether sample sizes are appropriate to the grain size of the material being sampled. recognised and certified laboratories. • Quality control samples inserted include field duplicates (1 in 20), standards (1 in 20) and blanks (1 in 50). • Sample sizes are consistent with industry standards and are considered appropriate for the mineralisation. Quality of assay data and laboratory tests • The nature, quality and appropriateness of the assaying and laboratory procedures used and whethe