Fortuna Establishes Presence in the Guyana Shield Through Quartzstone Earn-In Agreement

VANCOUVER, British Columbia, April 20, 2026 (GLOBE NEWSWIRE) -- FortunaMining Corp. (NYSE: FSM | TSX: FVI) is pleased to announce it has entered into an earn-in agreement with Qstone Inc., a private Guyanese company, pursuant to which Fortuna may earn up to a 70% interest in the Quartzstone Project, a large land package comprising 29,600 hectares located in the greenstone belt of north central Guyana. Jorge A. Ganoza, President and CEO of Fortuna, commented, “We are excited to establish a presence in the Guyana Shield, a highly prospective region with a strong history of gold discoveries.” Mr. Ganoza continued, “The Quartzstone Project, where historical drilling has identified multiple high grade zones of near-surface gold mineralization, is located in a prolific exploration camp, and this transaction provides Fortuna with a staged path to unlock its potential through systematic exploration and drilling.” Previous Drill Highlights A total of 183 diamond core drill holes, comprising 23,190 meters, were completed between 2010 and 2017. Drilling along a five-kilometer corridor identified multiple zones of high grade near-surface gold mineralization. Drill highlights include: DQS-016: 27.78 g/t Au 41.10 g/t Au 89.90 g/t Au over a width of 5.6 meters from 23.0 meters, including over a width of 1.1 meters from 25.6 meters and over a width of 1.0 meter from 26.7 meters DQS-043: 4.31 g/t Au 15.58 g/t Au 12.45 g/t Au over a width of 12.7 meters from 42.7 meters, including over a width of 1.6 meters from 44.6 meters and over a width of 1.3 meters from 54.1 meters DQS-052: 12.65 g/t Au over a width of 4.0 meters from 51.6 meters DQS-057: 15.93 g/t Au 74.72 g/t Au 81.96 g/t Au over a width of 13.2 meters from 92.2 meters, including over a width of 1.0 meter from 94.9 meters and over a width of 1.0 meter from 95.9 meters DQS-070: 10.13 g/t Au 19.33 g/t Au 16.63 g/t Au over a width of 5.0 meters from 105 meters, including over a width of 2.0 meters from 105 meters, and over a width of 1.0 meter from 108 meters DQS-071: 10.82 g/t Au 37.84 g/t Au over a width of 6.7 meters from 89.2 meters, including over a width of 0.8 meters from 94.2 meters DQS-088: 9.91 g/t Au 101.58 g/t Au over a width of 13.1 meters from 242.7 meters, including over a width of 1.0 meter from 246.7 meters       Refer to Appendix 1 for full details of the drill holes and assay results for this historical program. Project location and geological setting Figure 1: Location of Quartzstone Project, Guyana The Quartzstone Project is located approximately 120 kilometers west of Georgetown and 35 kilometers northwest of G Mining’s Oko West project (refer to Figure 1). The Project hosts an orogenic gold system along the contact between a granitoid complex and Lower Proterozoic greenstone rocks within the Guyana Shield, a geological setting known for significant gold deposits. Local geology comprises granitoids, metavolcanic, and metasedimentary rocks, cut by a west-dipping, north-south striking thrust and shear zone that extends over 26 kilometers. Gold mineralization is hosted in quartz-tourmaline-carbonate veins and breccias within a high-strain corridor up to 100 meters wide along the principal north-south shear and associated northeast-trending structures. Drilling to date has tested only approximately 5 kilometers of the 26 kilometer shear zone within the concession area. Several geochemical anomalies along northeast-southwest trending cross-structures also remain untested and will be prioritized by the exploration program. Planned Exploration Fortuna’s initial exploration program, budgeted at approximately US$5.5 million, will focus on advancing priority targets already defined at Quartzstone, while generating additional targets along the highly prospective 26 kilometer main shear zone. Planned work includes airborne magnetic surveys to develop a detailed structural framework, supported by high-resolution satellite imagery and digital elevation modelling. Field programs will include infill geochemical sampling, auger drilling, and detailed geological and regolith mapping over prospective geophysical targets and known anomalous areas. An initial 5,000 meter diamond drilling program is planned to test historical targets and workings, as well as priority structural corridors along the main contact and northeast-trending intersections. Earn-in Agreement Terms Fortuna may earn an initial 51% interest in the Quartzstone Project by completing a minimum of 60,000 meters of drilling within four years, while paying all license fees and funding all related expenditures. Upon exercise of the first option, Fortuna will form a joint venture with Qstone. Fortuna may earn an additional 19% interest in the Quartzstone Project, for an aggregate 70% interest, by solely funding a feasibility study within three years of exercising the first option and continuing to pay all license fees. Upon signing the Earn-In Agreement, the Company paid Qstone a non-refundable cash option premium of US$5 million. In addition to royalties payable to the State on gold production, the Quartzstone Project is subject to a 4.5% net smelter returns royalty in favour of a prior owner, which may be repurchased at a price to be determined by the parties at any time. Quality Assurance & Quality Control for previous exploration drill program All diamond drilling (DD) drill holes started with PQ sized diameter (85 mm core), before reducing to HQ diameter (63.5 mm core) diamond drill bits on intersecting fresh rock. The core was logged, marked up for sampling using standard lengths of one meter or to a geological boundary. Samples were then cut into equal halves using a diamond saw. One half of the core was left in the original core box and stored in a secure location at the core yard at the project site. The other half was sampled, catalogued, and placed into sealed bags and securely stored at the site until shipment. All DD samples were prepared by WBDG at the in-house sample preparation facility at the Quartzstone camp where samples were dried and crushed to 95% passing a 10-mesh screen. Following crushing, samples were riffled to 500 gram and pulverised to 80% passing a 150-mesh screen to produce a final 50-gram pulp sample. Prior to 2013, pulps were securely transported to either Loring Laboratories Ltd., in Georgetown, Guyana, or Acme laboratory located in Santiago, Chile, for assay analysis. Samples were analyzed by fire assay using 50 gram sample charge with atomic absorption spectroscopy finish. If the result was >1.0 g/t Au the sample was re-assayed by fire assay with gravimetric finish. The 2013 exploration program used the Acme Laboratory in Abidjan, Ivory Coast, and ALS Laboratory in Lima, Peru. Acme assayed samples using the bulk leach extractable gold method with solvent residue assayed using a standard fire assay with atomic absorption spectroscopy finish using 50 gram sample charges. ALS used gold by bulk extended leach cyanide using 1 kilogram sample charges. Since 2015 Activation Laboratories Canada (Actlabs), with a laboratory in Georgetown, Guyana, used for analysis by fire assay with gravimetric finish and leachwell 500 gram sample charges. In 2016 Actlabs were used for re-analysis of rejects by leachwell 500 gram sample charges. The 2017 drilling was analyzed at Actlabs in Georgetown, Guyana, by metallic screens and fire assay with gravimetric finish. Quality control procedures included the systematic insertion of blanks, duplicates and sample standards into the sample stream. In addition, the laboratories inserted their own quality control samples. Qualified Person Paul Weedon, Senior Vice President, Exploration for Fortuna Mining Corp., is a Qualified Person as defined by National Instrument 43-101 being a member of the Australian Institute of Geoscientists (Membership #6001). Mr. Weedon has reviewed and approved the scientific and technical information contained in this news release. Mr. Weedon conducted a site visit to the Quartzstone Project in June 2025, where mineralized intervals of drill core were examined; surface exposures of mineralization were visited, and discussions held with geology staff regarding historical sampling and analytical techniques underlying the drilling data. To further verify the data, original assay certificates were compared to the database and independent sampling of core was performed that confirmed the presence of gold in randomly selected mineralized intervals. There were no limitations to the verification process. About Fortuna Mining Corp. Fortuna Mining Corp. is a Canadian precious metals mining company with three operating mines and a portfolio of exploration projects in Argentina, Côte d’Ivoire, Mexico, and Peru, as well as the Diamba Sud Gold Project in Senegal. Sustainability is at the core of our operations and stakeholder relationships. We produce gold and silver while creating long-term shared value through efficient production, environmental stewardship, and social responsibility. For more information, please visit our website at www.fortunamining.com. ON BEHALF OF THE BOARD Jorge A. Ganoza President, CEO, and Director Fortuna Mining Corp. Investor Relations: Carlos Baca | [email protected] | fortunamining.com | X | LinkedIn | YouTube | Instagram | TikTok Forward looking Statements This news release contains forward-looking statements which constitute “forward-looking information” within the meaning of applicable Canadian securities legislation and “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995 (collectively, “Forward-looking Statements”). All statements included herein, other than statements of historical fact, are Forward-looking Statements and are subject to a variety of known and unknown risks and uncertainties which could cause actual events or results to differ materially from those reflected in the Forward-looking Statements. The Forward-looking Statements in this news release include, without limitation, statements pertaining to the ability of Fortuna to satisfy the conditions to earn an initial 51% interest, and an additional 19% interest, in the Quartzstone Project; statements regarding the ability to acquire the 4.5% NSR; statements regarding the Company’s proposed initial exploration program, including planned drilling, camp and access upgrades, and other work; statements about the Company’s business strategies, plans and outlook; the Company’s plans for its mines and mineral properties; changes in general economic conditions and financial markets; the impact of inflationary pressures on the Company’s business and operations; the future results of exploration activities; expectations with respect to metal grade estimates and the impact of any variations relative to metals grades experienced; assumed and future metal prices; the merit of the Company’s mines and mineral properties; and the future financial or operating performance of the Company. Often, but not always, these Forward-looking Statements can be identified by the use of words such as “estimated”, “potential”, “open”, “future”, “assumed”, “projected”, “proposed”, “used”, “detailed”, “has been”, “gain”, “planned”, “reflecting”, “will”, “anticipated”, “estimated” “containing”, “remaining”, “to be”, or statements that events, “could” or “should” occur or be achieved and similar expressions, including negative variations. Forward-looking Statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance, or achievements of the Company to be materially different from any results, performance or achievements expressed or implied by the Forward-looking Statements. Such uncertainties and factors include, among others, operational risks associated with mining and mineral processing; uncertainty relating to Mineral Resource and Mineral Reserve estimates; uncertainty relating to capital and operating costs, production schedules and economic returns; risks relating to the Company’s ability to replace its Mineral Reserves; risks related to the conversion of Mineral Resources to Mineral Reserves; risks associated with mineral exploration and project development; uncertainty relating to the repatriation of funds as a result of currency controls; environmental matters including obtaining or renewing environmental permits and potential liability claims; uncertainty relating to nature and climate conditions; laws and regulations regarding the protection of the environment (including greenhouse gas emission reduction and other decarbonization requirements and the uncertainty surrounding the interpretation of omnibus Bill C-59 and the related amendments to the Competition Act (Canada);risks associated with political instability and changes to the regulations governing the Company’s business operations; changes in national and local government legislation, taxation, controls, regulations and political or economic developments in countries in which the Company does or may carry on business; risks associated with war, hostilities or other conflicts, such as the Ukrainian - Russian, Iran - Israel and US, Israel - Hamas conflicts, and the impacts they may have on global economic activity; risks relating to the termination of the Company’s mining concessions in certain circumstances; developing and maintaining relationships with local communities and stakeholders; risks associated with losing control of public perception as a result of social media and other web-based applications; potential opposition to the Company’s exploration, development and operational activities; risks related to the Company’s ability to obtain adequate financing for planned exploration and development activities; property title matters; risks related to the ability to retain or extend title to the Company’s mineral properties; risks relating to the integration of businesses and assets acquired by the Company; impairments; risks associated with climate change legislation; reliance on key personnel; adequacy of insurance coverage; operational safety and security risks; legal proceedings and potential legal proceedings; uncertainties relating to general economic conditions; risks relating to a global pandemic, which could impact the Company’s business, operations, financial condition and share price; competition; fluctuations in metal prices; risks associated with entering into commodity forward and option contracts for base metals production; fluctuations in currency exchange rates and interest rates; tax audits and reassessments; risks related to hedging; uncertainty relating to concentrate treatment charges and transportation costs; sufficiency of monies allotted by the Company for land reclamation; risks associated with dependence upon information technology systems, which are subject to disruption, damage, failure and risks with implementation and integration; labor relations issues; as well as those factors discussed under “Risk Factors” in the Company's Annual Information Form for the fiscal year ended December 31, 2025. Although the Company has attempted to identify important factors that could cause actual actions, events, or results to differ materially from those described in Forward-looking Statements, there may be other factors that cause actions, events or results to differ from those anticipated, estimated or intended. Forward-looking Statements contained herein are based on the assumptions, beliefs, expectations and opinions of management, including, but not limited to, the accuracy of the Company’s current Mineral Resource and Mineral Reserve estimates; that the Company’s activities will be conducted in accordance with the Company’s public statements and stated goals; that there will be no material adverse change affecting the Company, its properties or its production estimates (which assume accuracy of projected ore grade, mining rates, recovery timing, and recovery rate estimates and may be impacted by unscheduled maintenance, labor and contractor availability and other operating or technical difficulties); the duration and effect of global and local inflation; the duration and impacts of geo-political uncertainties on the Company’s production, workforce, business, operations and financial condition; the expected trends in mineral prices, inflation and currency exchange rates; that all required approvals and permits will be obtained for the Company’s business and operations on acceptable terms; that there will be no significant disruptions affecting the Company's operations and such other assumptions as set out herein. Forward-looking Statements are made as of the date hereof and the Company disclaims any obligation to update any Forward-looking Statements, whether as a result of new information, future events, or results or otherwise, except as required by law. There can be no assurance that these Forward-looking Statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, investors should not place undue reliance on Forward-looking Statements. Cautionary Note to United States Investors Concerning Estimates of Reserves and Resources All reserve and resource estimates included in this news release have been prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101") and the Canadian Institute of Mining, Metallurgy, and Petroleum Definition Standards on Mineral Resources and Mineral Reserves. NI 43-101 is a rule developed by the Canadian Securities Administrators that establishes standards for public disclosure by a Canadian company of scientific and technical information concerning mineral projects. All Mineral Reserve and Mineral Resource estimates contained in the technical disclosure have been prepared in accordance with NI 43-101 and the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards on Mineral Resources and Reserves. Canadian standards, including NI 43-101, differ significantly from the requirements of the Securities and Exchange Commission, and mineral reserve and resource information included in this news release may not be comparable to similar information disclosed by U.S. companies. Appendix 1: Quartzstone historical program drill holes and assay results HoleID Easting (PSAD56_21N) Northing (PSAD56_21N) Elev. (m) EOH1,2 Depth (m) UTM Azimuth Dip Depth2 From (m) Depth2,3 To (m) Drilled2,4 Width (m) Au (g/t) Hole Type5 Area 1-1 248485.93 727799.3 97.15 160.6 132 -60 46.30 47.10 0.80 6.00 DD South West 1-1             72.30 77.80 5.50 0.81 DD South West 1-2 248435.21 727842.85 112.02 160.8 132 -60 NSI       DD South West 124-1 251490.52 731180.19 151.17 170 90 -60 NSI       DD Soddam North 1-3 248545.58 727747.63 101.86 160.6 132 -60 62.80 65.80 3.00 0.67 DD South West 162-1 251706.09 734956.64 105.01 200 90 -60 NSI       DD Zone 164 164-1 251677.76 735185.91 122.91 64 60 -60 NSI       DD Zone 164 164-2 251853.97 735258.29 92.74 61.6 270 -60 NSI       DD Zone 164 164-3 251909.89 735258.04 90.29 113 270 -60 NSI       DD Zone 164 164-4 251562.46 735188.93 132.63 50 90 -60 20.50 21.50 1.00 7.84 DD Zone 164 164-5 251540.36 735188.44 134.01 180 90 -60 42.00 50.60 8.60 0.92 DD Zone 164 164-5             80.60 81.60 1.00 6.50 DD Zone 164 164-5             134.00 134.70 0.70 5.28 DD Zone 164 164-5             156.60 166.60 10.00 1.67 DD Zone 164 164-5           including 163.50 164.20 0.70 10.44 DD Zone 164 164-6 251907.73 735088.1 98.01 210 270 -60 NSI       DD Zone 164 168-1 250712.52 734737.25 190.14 150 0 -90 NSI       DD Regional 168-2 251271.39 734940.91 210.36 150 0 -90 NSI       DD Regional 169-1 251296.38 735680.67 162.03 133.5 0 -90 NSI       DD Main Pit 169-2 251225.56 735675.85 184.98 81.9 90 -60 NSI       DD Main Pit 169-3 251477.76 735665.07 105.07 120 90 -60 NSI       DD Main Pit 169-4 251319.08 735660.89 155.55 200 93 -60 NSI       DD Main Pit 169-5 251310.67 735717.12 151.35 210 105 -60 131.60 134.60 3.00 0.62 DD Main Pit 172-1 251934.1 735934.22 101.05 100 270 -60 NSI       DD Regional 172-2 251218.81 735942.28 165.48 211.5 90 -60 NSI       DD Main Pit 180-1 251603.27 736764.44 119.42 176.3 90 -60 66.90 74.00 7.10 0.87 DD Blue South 180-2 251453.3 736759.74 130.53 210 90 -60 NSI       DD Blue South 180-3 251719.28 736776.34 104.74 150.7 270 -60 NSI       DD Blue South 184-1 251812.35 737168.4 101.78 227 90 -60 NSI       DD Blue Pit 184-2 251892.61 737159.57 109.2 150 90 -60 0.00 6.50 6.50 3.87 DD Blue Pit 184-2           including 3.50 4.20 0.70 20.70 DD Blue Pit 184-3 251629.92 737171.91 106.07 182 90 -60 NSI       DD Blue Pit 184-4 251704.07 737171.11 86.27 180.2 90 -60 NSI       DD Blue Pit 184-6 251992.22 737168.7 90.42 110 270 -60 NSI       DD Blue Pit 190-1 252090.47 737729.98 89.76 205 90 -60 NSI       DD Intermediate 192-1 252345.49 737965.12 90.92 201 260 -60 NSI       DD Intermediate 196-1 251798.66 738367.11 88.81 161 90 -60 NSI       DD Eikle 196-2 251710.39 738367.34 112.11 209 90 -60 NSI       DD Eikle 196-3 252144.73 738368.56 103.71 239 270 -60 6.50 9.50 3.00 2.32 DD Eikle 196-3             117.00 122.50 5.50 0.83 DD Eikle 196-3           including 117.00 117.50 0.50 5.13 DD Eikle 196-4 252223.95 738367.21 93.46 167 270 -60 NSI       DD Eikle 196-5 252063.75 738365.43 121.3 185 270 -60 3.00 4.00 1.00 8.20 DD Eikle 196-5             52.50 53.00 0.50 28.40 DD Eikle 196-5             127.50 128.00 0.50 6.63 DD Eikle 197-1 251845.41 738474.78 87.23 95 90 -60 NSI       DD Eikle 197-2 252077.65 738430.53 104.85 130 260 -60 4.00 7.00 3.00 0.95 DD Eikle 197-3 252149.1 738435.35 102.82 245 260 -60 63.80 65.00 1.20 5.20 DD Eikle 197-3             207.50 208.80 1.30 6.10 DD Eikle 198-1 251844.59 738556.69 90.46 179 90 -60 NSI       DD Eikle 198-10 251902.05 738553.15 106.2 40.1 90 -60 NSI       DD Eikle 198-11 251894.77 738590.02 107.19 50.4 90 -60 NSI       DD Eikle 198-2 251769.13 738548.84 98.61 200 90 -60 87.00 90.00 3.00 1.22 DD Eikle 198-2             103.00 106.00 3.00 10.63 DD Eikle 198-2           including 105.00 106.00 1.00 15.90 DD Eikle 198-2             117.00 121.00 4.00 4.09 DD Eikle 198-2           including 120.00 121.00 1.00 15.10 DD Eikle 198-3 251691.33 738540.79 84.34 221 90 -60 NSI       DD Eikle 198-4 251622.14 738539.51 84.93 260 90 -60 NSI       DD Eikle 198-5 252131.79 738548.22 98.14 200 270 -60 NSI       DD Eikle 198-6 252049.57 738551.3 89.1 179 270 -60 NSI       DD Eikle 198-7 251535.84 738548.09 98.1 130 90 -60 NSI       DD Eikle 198-8 251449.61 738555.44 109.37 190 90 -60 NSI       DD Eikle 198-9 251893.31 738507.63 105.66 45.1 90 -60 NSI       DD Eikle 199-1 251874.94 738644.74 118.26 89 90 -60 NSI       DD Eikle 199-2 251907.45 738644.86 119.08 145 90 -60 NSI       DD Eikle 200-1 251865.58 738771.43 91.14 152 90 -60 59.00 64.25 5.25 0.76 DD Eikle 200-2 251784.8 738765.72 96.85 167 90 -60 145.60 146.10 0.50 9.77 DD Eikle 200-3 251650.63 738763.53 121.69 248 90 -60 235.00 236.50 1.50 8.54 DD Eikle 200-4 252010.14 738771.06 99.79 148 270 -60 NSI       DD Eikle 2-1 248662.96 727975.56 127.22 160.6 132 -60 NSI       DD South West 2-2 248614.65 728019.66 116.62 160 132 -60 NSI       DD South West 2-3 248705.71 727933.71 127.36 160.6 132 -60 14.40 19.20 4.80 1.12 DD South West 3-1 248816.6 728167.78 119.29 160.6 132 -60 31.10 35.30 4.20 0.66 DD South West 3-2 248764.59 728216.67 108.95 160.6 132 -60 NSI       DD South West 3-3 248871.28 728116.78 130.09 160 132 -60 NSI       DD South West 54-1 251419.14 724166.05 118.43 199 90 -60 NSI       DD Barrakad 64-1 251324.23 725170.27 108.58 166 90 -60 NSI       DD Barrakad 64-2 251240.42 725164.29 109.63 226 90 -60 NSI       DD Barrakad 70-1 251258.07 725762.86 124.54 100 90 -60 NSI       DD Barrakad 70-2 251164.28 725765.92 123.17 150 90 -60 NSI       DD Barrakad BC-1-1 252388.87 723711.5 90.26 150 225 -60 NSI       DD Barrakad BC-1-2 252336.79 723658.51 90.15 151 225 -60 NSI       DD Barrakad BC-1-2A 252342.22 723660.43 89.37 48 225 -60 NSI       DD Barrakad BC-2-1 252367.54 724109.2 109.97 114.55 225 -60 NSI       DD Barrakad BC-2-2 252328.84 724071.7 113.51 185 225 -60 NSI       DD Barrakad BC-2-3 252271.96 724013.81 107.12 165 225 -60 NSI       DD Barrakad BC-2-4 252214.43 723956.57 92.55 225 225 -60 210.50 211.00 0.50 14.50 DD Barrakad BC-2-5 252135.46 723877.81 95.11 150 225 -60 NSI       DD Barrakad BC-2-6 252130.65 723871.62 95.3 120 45 -60 NSI       DD Barrakad DQS-001 251840.99 737172.83 106.59 65 118 -60 51.90 56.40 4.50 0.67 DD Blue Pit DQS-002 251864.9 737206.01 96.13 50 118 -60 NSI       DD Blue Pit DQS-003 251796.36 737196.94 103.02 110 118 -60 88.80 89.80 1.00 8.87 DD Blue Pit DQS-004 251820.38 737140.42 97.55 65 118 -60 NSI       DD Blue Pit DQS-005 251845.12 737127.8 98.71 35 118 -60 NSI       DD Blue Pit DQS-006 251889.53 737193.31 99.06 39 118 -60 12.00 15.00 3.00 0.78 DD Blue Pit DQS-007 251886.57 738525.13 100.62 50 90 -60 32.10 40.10 8.00 1.68 DD Eikle DQS-007           including 38.30 39.00 0.70 9.54 DD Eikle DQS-008 251885.22 738486.99 103.64 40.5 90 -60 NSI       DD Eikle DQS-009 251877.72 738567.19 99.25 59.2 90 -60 35.80 46.50 10.70 1.16 DD Eikle DQS-009           including 37.50 38.20 0.70 7.90 DD Eikle DQS-010 251842.69 738525.5 87.89 80.6 90 -60 27.70 33.50 5.80 2.00 DD Eikle DQS-010           including 31.20 31.90 0.70 7.85 DD Eikle DQS-010             40.40 41.00 0.60 12.73 DD Eikle DQS-011 251837.3 738567.63 92.34 89 90 -60 NSI       DD Eikle DQS-012 251878.57 738615.14 112.99 76.6 90 -60 53.70 59.60 5.90 3.69 DD Eikle DQS-012           including 53.70 54.60 0.90 10.30 DD Eikle DQS-013 251832.72 738615.03 113.14 108 90 -60 71.50 79.50 8.00 3.59 DD Eikle DQS-013           including 72.50 73.50 1.00 14.60 DD Eikle DQS-014 251743.78 738590.05 90.41 151.6 90 -60 128.40 129.40 1.00 13.50 DD Eikle DQS-015 251686.8 738638.67 109.15 200 90 -60 157.90 161.20 3.30 7.12 DD Eikle DQS-015           including 158.90 159.60 0.70 25.90 DD Eikle DQS-016 251664.7 736778.03 112.4 45 90 -60 23.00 28.60 5.60 27.78 DD Blue South DQS-016           including 25.60 26.70 1.10 41.10 DD Blue South DQS-016           and 26.70 27.70 1.00 89.90 DD Blue South DQS-017 251672.4 736816.93 106.15 45 90 -60 23.40 24.10 0.70 7.55 DD Blue South DQS-018 251667.79 736740.62 120.67 36 90 -60 15.60 26.10 10.50 1.07 DD Blue South DQS-019 251572.96 736957.17 103.54 115.6 90 -60 NSI       DD Blue South DQS-020 251896.18 737368.37 99.4 36 90 -60 NSI       DD Blue South DQS-021 251327.36 735783.21 121.78 150 108 -60 91.60 94.60 3.00 12.48 DD Main Pit DQS-021           including 91.60 92.60 1.00 29.56 DD Main Pit DQS-022 251479.42 736333.26 147.23 55 90 -60 33.50 40.50 7.00 0.87 DD Zone 176-3 DQS-023 251484.73 736371.3 151.86 90 90 -60 19.40 26.10 6.70 0.75 DD Zone 176-3 DQS-024 251481.03 736411.19 167.21 60 90 -60 NSI       DD Zone 176-3 DQS-025 251413.82 736329.07 157.34 100 90 -60 NSI       DD Zone 176-3 DQS-026 251410.8 736368.09 164.54 115.6 90 -60 91.10 94.20 3.10 1.33 DD Zone 176-3 DQS-027 251475.45 736449.2 176.6 60 90 -60 NSI       DD Zone 176-3 DQS-028 251469.45 736288.22 150.95 61.4 90 -60 NSI       DD Zone 176-3 DQS-029 251411.16 736412.63 173.7 112.5 90 -60 99.80 103.90 4.10 0.50 DD Zone 176-3 DQS-030 251685.67 736329.09 105.26 54 90 -60 NSI       DD Zone 176-3 DQS-031 251659.84 735205.27 117.94 120 90 -60 NSI       DD Zone 164 DQS-032 251543.3 735212.55 124.72 61.5 90 -60 37.00 40.20 3.20 1.81 DD Zone 164 DQS-033 251514.18 735252.2 131.73 97.6 90 -60 87.60 90.60 3.00 1.14 DD Zone 164 DQS-034 251550.23 735145.14 144.01 65.2 90 -60 40.50 47.30 6.80 1.55 DD Zone 164 DQS-035 251558.94 735108.26 151.17 57 90 -60 NSI       DD Zone 164 DQS-036 251558.38 735070.33 149.96 60 90 -60 38.00 40.00 2.00 9.46 DD Zone 164 DQS-037 251546.7 735025.63 145.68 60 90 -60 NSI       DD Zone 164 DQS-038 251589.5 734064.43 207.52 75 90 -60 NSI       DD Zone 153 DQS-039 251587.67 734099.08 203.33 60 90 -60 NSI       DD Zone 153 DQS-040 251598.1 734022.55 208.51 60 90 -60 NSI       DD Zone 153 DQS-041 251601.2 734186.12 186.63 60 90 -60 NSI       DD Zone 153 DQS-042 251618.73 733939.69 201.38 56.2 90 -60 NSI       DD Zone 153 DQS-043 251603.74 733976.64 205.08 66 90 -60 42.70 55.40 12.70 4.31 DD Zone 153 DQS-043           including 44.60 46.20 1.60 15.58 DD Zone 153 DQS-043           and 54.10 55.40 1.30 12.45 DD Zone 153 DQS-044 251608.46 733891.62 197.83 65 90 -60 NSI       DD Zone 153 DQS-045 251623.28 736823.07 107.56 70.6 90 -60 47.40 55.90 8.50 3.15 DD Blue South DQS-045           including 53.00 54.00 1.00 11.49 DD Blue South DQS-046 251601.25 736784.64 112.77 85 90 -60 NSI       DD Blue South DQS-047 251593.07 736739.11 125.46 90.4 90 -60 74.60 78.20 3.60 7.88 DD Blue South DQS-047           including 75.60 77.60 2.00 13.38 DD Blue South DQS-048 251666.6 736656.91 142.57 56 90 -60 NSI       DD Blue South DQS-049 251660.13 736697.68 132.21 55 90 -60 27.60 28.60 1.00 5.17 DD Blue South DQS-049             34.30 38.30 4.00 1.99 DD Blue South DQS-050 251650.55 736620.72 154.4 75 90 -60 NSI       DD Blue South DQS-051 251659.9 736582.35 154.21 60.1 90 -60 NSI       DD Blue South DQS-052 251609.1 736861.71 96.69 80 90 -60 51.60 55.60 4.00 12.65 DD Blue South DQS-053 251532.13 736961.69 110.38 106.6 90 -60 NSI       DD Blue South DQS-054 251614.74 736894.97 91.74 75 90 -60 49.70 58.40 8.70 4.84 DD Blue South DQS-054           including 49.70 51.50 1.80 9.94 DD Blue South DQS-054           and 52.90 53.70 0.80 13.05 DD Blue South DQS-055 251625.84 736999.57 102.82 75 90 -60 NSI       DD Blue South DQS-056 251649.31 736896.44 97.81 50 90 -60 NSI       DD Blue South DQS-057 251339.48 735818.75 118.14 140 100 -60 92.20 105.40 13.20 15.93 DD Main Pit DQS-057           including 94.90 95.90 1.00 74.72 DD Main Pit DQS-057           and 95.9 96.9 1.00 81.96 DD Main Pit DQS-057             110.10 116.40 6.30 0.77 DD Main Pit DQS-058 251359.25 735865.4 125.67 132 90 -60 101.80 113.70 11.90 0.45 DD Main Pit DQS-059 251477.73 735208.09 158.23 110 90 -60 94.10 97.30 3.20 0.64 DD Zone 164 DQS-060 251480.73 735150.39 169.93 129 90 -60 NSI       DD Zone 164 DQS-061 251489.83 735109.5 177.54 130.6 90 -60 87.80 92.20 4.40 1.15 DD Zone 164 DQS-062 251792.3 734956.42 96.15 70.6 270 -60 NSI       DD Main South DQS-063 251771.43 734876.66 112.15 79.6 270 -60 NSI       DD Main South DQS-064 251645.32 730918.31 119.19 76.6 270 -60 2.80 6.50 3.70 4.31 DD Soddam North DQS-064           including 4.80 5.70 0.90 8.28 DD Soddam North DQS-065 251579.09 731180.07 125.77 80 280 -60 NSI       DD Soddam North DQS-066 251623.71 735486.72 114.93 74 0 -60 NSI       DD Camp DQS-067 251330.18 735816.26 118.6 235.5 0 -90 135.60 139.30 3.70 0.63 DD Main Pit DQS-068 251321.63 735783.25 121.89 149 0 -80 NSI       DD Main Pit DQS-069 251608.8 736871.17 96.35 105.5 0 -90 77.10 77.80 0.70 6.36 DD Blue South DQS-070 251583.2 736739.3 125.59 128 0 -90 105.00 110.00 5.00 11.13 DD Blue South DQS-070           including 105.00 107.00 2.00 19.33 DD Blue South DQS-070           and 108.00 109.00 1.00 16.63 DD Blue South DQS-071 251599.37 736819.93 104.84 104 0 -90 89.20 95.90 6.70 10.82 DD Blue South DQS-071           including 94.20 95.00 0.80 37.84 DD Blue South DQS-072 251687.04 738648.97 109.69 323 0 -90 269.00 275.00 6.00 0.97 DD Eikle DQS-073 251650.07 738773.92 122.63 400 0 -90 NSI       DD Eikle DQS-074 251885.34 737730.36 84.19 62 90 -60 NSI       DD Mango Tree DQS-075 251519.36 736824.08 103.64 179.6 0 -90 NSI       DD Blue South DQS-076 251518.32 736829.81 103.7 242 270 -70 NSI       DD Blue South DQS-077 251352.1 735869.66 125.72 167.3 0 -90 142.20 146.30 4.10 4.72 DD Main Pit DQS-077           including 145.30 146.30 1.00 16.30 DD Main Pit DQS-078 251362.02 735916.5 135.86 173 100 -60 NSI       DD Main Pit DQS-079 251360.75 735916.71 135.8 242 0 -90 NSI       DD Main Pit DQS-080 251313.29 735864.27 121.07 164 100 -60 142.50 146.50 4.00 1.76 DD Main Pit DQS-081 251366.29 735782.52 110.45 90 100 -60 66.80 72.80 6.00 1.15 DD Main Pit DQS-081             77.50 80.60 3.10 4.52 DD Main Pit DQS-081           including 78.30 79.00 0.70 15.95 DD Main Pit DQS-083 251222.6 735785 161.3 260 90 -75 NSI       DD Main Pit DQS-084 251392.32 735814.29 108.15 89 90 -60 67.40 75.10 7.70 9.04 DD Main Pit DQS-084           including 70.20 71.20 1.00 46.44 DD Main Pit DQS-085 251426.89 735637.84 106.31 60 0 -60 NSI       DD Main Pit DQS-086 251422.32 735639.82 106.25 60 330 -60 37.80 41.90 4.10 6.66 DD Main Pit DQS-086           including 38.80 39.80 1.00 22.48 DD Main Pit DQS-087 251243.76 735867.83 144.3 230 90 -70 200.00 208.00 8.00 0.84 DD Main Pit DQS-088 251242.92 735867.88 144.24 281 0 -90 222.10 223.10 1.00 12.36 DD Main Pit DQS-088             230.00 237.60 7.60 1.64 DD Main Pit DQS-088           including 236.70 237.60 0.90 7.47 DD Main Pit DQS-088             242.70 255.80 13.10 9.91 DD Main Pit DQS-088           including 246.70 247.70 1.00 101.58 DD Main Pit DQS-089 251427.9 735830.5 106.2 62 90 -60 37.70 40.80 3.10 1.99 DD Main Pit DQS-090-1 251909.11 738611.97 114.25 45 90 -60 20.80 30.60 9.80 0.96 DD Eikle DQS-091 251899.17 738588.18 107.06 44 90 -60 22.20 23.20 1.00 5.24 DD Eikle DQS-092 251912.41 738569.38 103.25 29 90 -60 11.10 11.80 0.70 9.77 DD Eikle DQS-092             17.40 21.50 4.10 4.59 DD Eikle DQS-092           including 19.80 20.50 0.70 13.30 DD Eikle DQS-093-2 251910.76 738548.85 103.43 27.4 90 -60 20.10 24.20 4.10 2.61 DD Eikle DQS-093-2           including 23.50 24.20 0.70 10.69 DD Eikle DQS-094 251907.91 738525.71 103.76 27.4 90 -60 8.00 14.00 6.00 2.17 DD Eikle DQS-094           including 8.00 9.10 1.10 6.11 DD Eikle DQS-094             19.00 24.30 5.30 2.05 DD Eikle DQS-094           including 23.50 24.30 0.80 9.55 DD Eikle DQS-096 251927.08 738614.4 111.4 30.5 90 -60 2.60 9.00 6.40 0.98 DD Eikle DQS-097 251903.59 738633.58 118.78 57.5 90 -60 32.40 37.40 5.00 3.72 DD Eikle DQS-097           including 32.40 33.40 1.00 16.13 DD Eikle DQS-097             42.40 49.00 6.60 0.59 DD Eikle DQS-098 251891.64 738645.22 118.47 69 90 -60 54.70 60.50 5.80 1.51 DD Eikle DQS-101 251154.13 735863.83 178.41 452 0 -90 311.00 316.00 5.00 1.70 DD Main Pit DQS-102 251257.37 735815.12 140.23 324 0 -90 102.00 105.00 3.00 3.51 DD Main Pit DQS-102             221.40 226.60 5.20 0.96 DD Main Pit DQS-102             238.90 240.90 2.00 10.90 DD Main Pit DQS-103 251216.66 735815.42 157.4 316 0 -90 266.40 269.40 3.00 2.45 DDH Main Pit DQS-103             273.20 283.00 9.80 1.26 DDH Main Pit Notes: 1. EOH: End of hole 2. Depths and widths reported to nearest significant decimal place 3. NSI: No significant intercepts 4. True widths cannot be estimated currently, as the orientation of mineralization is unknown. 5. RC: reverse circulation drilling | DD: diamond drilling tail | RCD: reverse circulation drilling with diamond tail A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/7267336f-e571-43b5-a628-f0ae9b6442df A PDF accompanying this announcement is available at http://ml.globenewswire.com/Resource/Download/674835e3-3324-4522-a8a9-7595c470e04a Figure 1 Location of Quartzstone Project, Guyana © 2026 Canjex Publishing Ltd. All rights reserved.