# STK: North American Conference Presentation Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2 Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03142611 Publisher: asx Original announcement: 2026-09-22T23:05:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-09-23T00:26:33.449Z Atlas analysis updated: 2026-09-23T00:26:33.449Z - Company: Strickland Metals Limited - Ticker: STK - Exchange: ASX - Region: Serbia - Primary commodity: Gold - Secondary commodities: Copper, Silver, Lead, Zinc - Document categories: Resource update, Drill results - Extracted: 2026-09-23 00:26:34 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Strickland Metals Limited presented an update on its Rogozna Project in Serbia, showcasing a significant JORC 2012 Mineral Resource Estimate of 9.25 million ounces of gold equivalent \(AuEq\). The project, backed by strategic investor Zijin Mining, demonstrates substantial resource growth and is fully funded for Pre-Feasibility Studies and ongoing exploration. While the resource base is large, a considerable portion remains in the Inferred category, with the company focusing on infill drilling to upgrade confidence and further exploration. Reasoning: The presentation highlights a substantial and growing JORC 2012 compliant gold-equivalent resource base of 9.25 Moz for the Rogozna Project, supported by a strategic investor and strong funding for PFS and exploration. New discoveries and open mineralization indicate significant upside potential. However, the high proportion of Inferred resources and some inconsistencies in reported contained metal values warrant caution. - Positive factor: Large and growing resource base of 9.25 Moz AuEq - Positive factor: Strategic investment from Zijin Mining validates asset quality - Positive factor: Fully funded for Pre-Feasibility Studies and exploration programs - Positive factor: High-grade gold system identified at Gradina - Positive factor: New discoveries at Red Creek and Kotlovi demonstrate exploration upside - Positive factor: JORC 2012 compliant resource estimates provide high reporting standard - Negative factor: A significant portion of the total resource \(8.00 Moz AuEq\) is in the Inferred category, indicating lower geological confidence - Negative factor: Discrepancy in reported contained zinc for Shanac Inferred resource \(2.30 kt Zn for 130 Mt at 0.34% Zn\) suggests a potential typo in the source table - Negative factor: Different metal price and recovery assumptions used for AuEq calculations across various deposits may complicate direct comparisons Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 50 ## Classification and evidence **Tonnage Growth** Polarity: positive Definition: Significant tonnage increase \(≥15%\) vs prior estimate with grade maintained or improved. Why it applies: The Rogozna project has shown significant resource growth, reaching 9.25 Moz AuEq, as depicted in the "Rogozna Resource Growth" chart. Evidence · text > 9.25Moz AuEq JORC Resources **Contained Metal Growth** Polarity: positive Definition: True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes. Why it applies: The overall contained metal for the Rogozna project has increased to 9.25 Moz AuEq, indicating growth in the resource base. Evidence · text > 9.25Moz AuEq JORC Resources **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: The presentation includes a Competent Persons Statement, confirming the technical parameters and assumptions for the Mineral Resource Estimates and Exploration Results. Evidence · text > Competent Persons Statement **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: All Mineral Resource Estimates are reported in accordance with JORC 2012 requirements. Evidence · text > JORC 2012 Mineral Resource Estimates **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: The project total includes 8.00 Moz AuEq in the Inferred category, representing a significant portion of the overall resource. Evidence · table > 8.00 Context: Inferred **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: The company has a strong balance sheet to fund Pre-Feasibility Studies for the project. Evidence · text > Fully Funded Studies and Exploration: Strong balance sheet with ~A$58.6m in cash to fund Pre-Feasibility Studies **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: The document provides updated Mineral Resource Estimates for Shanac, Gradina, Medenovac, and Copper Canyon deposits. Evidence · text > Appendix 1: Rogozna Mineral Resource Estimates **Step-Out Extension** Polarity: positive Definition: Mineralization extended beyond the previously known limit. Why it applies: The drill results at Gradina, Shanac, Medenovac, Red Creek, and Kotlovi indicate that mineralization remains open along strike and at depth, and new discoveries are being made, suggesting step-out extensions. Evidence · text > Mineralisation open along strike and at depth **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: The Competent Persons Statement covers exploration results, implying that QA/QC procedures are in place and disclosed. Evidence · text > Competent Persons Statement ## Extracted facts Stored fact records: 50. Some facts used in scoring do not have a stored record. ## Drill Results (9) ### ZRSD25233 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-41) Rogozna · gold #### Identity - Hole ID: ZRSD25233 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 4 - Grade Unit: g/t - Intercept: 4 m - From: 44 m - To: 48 m - Intercept Depth: 44 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD25233:44-48 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 4 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This intercept represents a high-grade discovery in the Red Creek zone, indicating significant exploration potential and adding to the project's overall value. - Positive factor: High AuEq grade of 4.0 g/t - Positive factor: Discovery hole in a new zone - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 4.0m @ 4.0g/t AuEq from 44.0m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD25233 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-42) Rogozna · gold #### Identity - Hole ID: ZRSD25233 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 2.3 - Grade Unit: g/t - Intercept: 53 m - From: 514.4 m - To: 567.4 m - Intercept Depth: 514.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD25233:514.4-567.4 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 2.3 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This long and good-grade intercept from a discovery hole at Red Creek indicates significant mineralization at depth, enhancing the project's exploration upside. - Positive factor: Significant intercept length of 53.0m - Positive factor: Good AuEq grade of 2.3 g/t - Positive factor: Discovery hole in a new zone - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 53.0m @ 2.3g/t AuEq from 514.4m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD25233 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-43) Rogozna · gold #### Identity - Hole ID: ZRSD25233 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 3.1 - Grade Unit: g/t - Intercept: 35 m - From: 518.4 m - To: 553.4 m - Intercept Depth: 518.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD25233:518.4-553.4 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 3.1 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This high-grade sub-interval within a broader discovery intercept at Red Creek further confirms significant mineralization and enhances the exploration potential. - Positive factor: High AuEq grade of 3.1 g/t within a broader intercept - Positive factor: Significant sub-interval length of 35.0m - Positive factor: Discovery hole in a new zone - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 35.0m @ 3.1g/t AuEq from 518.4m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD21136 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-44) Rogozna · gold #### Identity - Hole ID: ZRSD21136 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 5.1 - Grade Unit: g/t - Intercept: 97.7 m - From: 321 m - To: 418.7 m - Intercept Depth: 321 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD21136:321-418.7 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 5.1 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This exceptional and very long intercept at Medenovac confirms a high-grade core, significantly contributing to the deposit's potential, though it's a previously reported result. - Positive factor: Exceptional AuEq grade of 5.1 g/t - Positive factor: Very long intercept length of 97.7m - Positive factor: Structurally-controlled high-grade core - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 97.7m @ 5.1g/t AuEq from 321.0m \(ZRSD21136\) #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD24157 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-45) Rogozna · gold #### Identity - Hole ID: ZRSD24157 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 5.6 - Grade Unit: g/t - Intercept: 50 m - From: 271.5 m - To: 321.5 m - Intercept Depth: 271.5 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD24157:271.5-321.5 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 5.6 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This exceptional and long intercept at Medenovac further confirms a high-grade core, significantly contributing to the deposit's potential, though it's a previously reported result. - Positive factor: Exceptional AuEq grade of 5.6 g/t - Positive factor: Long intercept length of 50.0m - Positive factor: Structurally-controlled high-grade core - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 50.0m @ 5.6g/t AuEq from 271.5m \(ZRSD24157\) #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD24159 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-46) Rogozna · gold #### Identity - Hole ID: ZRSD24159 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 4.6 - Grade Unit: g/t - Intercept: 43.4 m - From: 357.2 m - To: 400.6 m - Intercept Depth: 357.2 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD24159:357.2-400.6 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 4.6 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This high-grade and long intercept at Medenovac reinforces the presence of a high-grade core, contributing to the deposit's potential, though it's a previously reported result. - Positive factor: High AuEq grade of 4.6 g/t - Positive factor: Long intercept length of 43.4m - Positive factor: Structurally-controlled high-grade core - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 43.4m @ 4.6g/t AuEq from 357.2m \(ZRSD24159\) #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD25189 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-47) Rogozna · gold #### Identity - Hole ID: ZRSD25189 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 1.3 - Grade Unit: g/t - Intercept: 277.3 m - From: 337.4 m - To: 614.7 m - Intercept Depth: 337.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD25189:337.4-614.7 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Metal Eq. Grade: 1.3 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This exceptionally long and good-grade intercept from the new Kotlovi discovery indicates a significant and extensive mineralized zone, greatly enhancing the project's exploration upside. - Positive factor: Exceptional intercept length of 277.3m - Positive factor: Good AuEq grade of 1.3 g/t - Positive factor: New Kotlovi discovery with growing mineralization footprint - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 277.3m @ 1.3g/t AuEq from 337.4m \(ZRSD25189\) #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD25189 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-48) Rogozna · gold #### Identity - Hole ID: ZRSD25189 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 2.9 - Grade Unit: g/t - Intercept: 33.5 m - From: 339.4 m - To: 372.9 m - Intercept Depth: 339.4 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD25189:339.4-372.9 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This high-grade sub-interval within a broader discovery intercept at Kotlovi further confirms significant gold mineralization and enhances the exploration potential. - Positive factor: High gold grade of 2.9 g/t within a broader intercept - Positive factor: Significant sub-interval length of 33.5m - Positive factor: New Kotlovi discovery with growing mineralization footprint - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 33.5m @ 2.9g/t Au from 339.4m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ### ZRSD25206 [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-drill-facts-49) Rogozna · gold #### Identity - Hole ID: ZRSD25206 - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: serbia - Ticker: STK #### Geometry - Grade: 2.2 - Grade Unit: g/t - Intercept: 34.9 m - From: 324.2 m - To: 359.1 m - Intercept Depth: 324.2 m #### Classification - Program: exploration - Sample Type: drill - Group ID: ZRSD25206:324.2-359.1 #### QA/QC - QA/QC Methods: standards #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: This good-grade and significant intercept from the new Kotlovi discovery further expands the known mineralization footprint, adding to the project's exploration upside. - Positive factor: Good gold grade of 2.2 g/t - Positive factor: Significant intercept length of 34.9m - Positive factor: New Kotlovi discovery with growing mineralization footprint - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · text > 34.9m @ 2.2g/t Au from 324.2m \(ZRSD25206\) #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. Why it applies: qaqc\_disclosed is not true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: proximity is offered as the value premise: "For personal use only 12 Red Creek – High Grade Gold + Base Metals Discovery Significant potential with limited drilling" ## Resource Estimates (41) ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-0) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:146d7f8edbdbfa59dc58 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.83 - Grade Unit: g/t - Contained Metal: 0.8 - Contained Unit: moz - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Shanac deposit's Indicated resource shows a solid gold grade and contained metal, contributing significantly to the project's overall value with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Good gold grade for a large tonnage deposit - Positive factor: JORC 2012 compliant with QP sign-off Evidence · table > 0.83 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-1) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:146d7f8edbdbfa59dc58 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.13 - Grade Unit: % - Contained Metal: 39 - Contained Unit: kt - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Indicated copper resource at Shanac adds to the polymetallic value, with a moderate grade and contained metal, contributing to the overall project economics. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Contributes to polymetallic nature of the deposit Evidence · table > 0.13 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-2) Rogozna · silver #### Identity - Project: Rogozna - Commodity: silver - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:146d7f8edbdbfa59dc58 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 7.2 - Grade Unit: g/t - Contained Metal: 6.9 - Contained Unit: moz - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Indicated silver resource at Shanac, with a good grade and contained metal, enhances the polymetallic nature and overall economic potential of the deposit. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Significant contained silver adds to polymetallic value Evidence · table > 7.20 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-3) Rogozna · lead #### Identity - Project: Rogozna - Commodity: lead - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:146d7f8edbdbfa59dc58 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.29 - Grade Unit: % - Contained Metal: 87 - Contained Unit: kt - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Indicated lead resource at Shanac, with a moderate grade and contained metal, adds to the polymetallic value of the project. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Contributes to polymetallic nature of the deposit Evidence · table > 0.29 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-4) Rogozna · zinc #### Identity - Project: Rogozna - Commodity: zinc - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:146d7f8edbdbfa59dc58 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.36 - Grade Unit: % - Contained Metal: 108 - Contained Unit: kt - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Indicated zinc resource at Shanac, with a moderate grade and contained metal, adds to the polymetallic value of the project. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Contributes to polymetallic nature of the deposit Evidence · table > 0.36 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-5) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:146d7f8edbdbfa59dc58 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Contained Metal: 1.25 - Contained Unit: moz - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 1.3 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Indicated AuEq resource at Shanac represents a substantial contribution to the project's overall value, with transparent metal equivalent calculations. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Significant AuEq grade and contained metal - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · table > 1.30 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-6) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:f0ee244afe29c8e6a357 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 130000000 - Grade: 0.55 - Grade Unit: g/t - Contained Metal: 2.3 - Contained Unit: moz - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Shanac Inferred gold resource adds substantial tonnage and contained metal to the project, but its lower confidence category means further drilling is required for de-risking. - Positive factor: Large tonnage contributes significantly to overall resource - Positive factor: Good contained gold for an Inferred resource - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.55 Context: 130 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-7) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:f0ee244afe29c8e6a357 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 130000000 - Grade: 0.11 - Grade Unit: % - Contained Metal: 143 - Contained Unit: kt - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Inferred copper resource at Shanac contributes to the polymetallic nature of the deposit, but its lower confidence category requires further validation. - Positive factor: Large contained copper adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.11 Context: 130 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-8) Rogozna · silver #### Identity - Project: Rogozna - Commodity: silver - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:f0ee244afe29c8e6a357 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 130000000 - Grade: 6.1 - Grade Unit: g/t - Contained Metal: 25.5 - Contained Unit: moz - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Inferred silver resource at Shanac, with substantial contained metal, enhances the polymetallic value, but its confidence level is lower. - Positive factor: Significant contained silver adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 6.10 Context: 130 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-9) Rogozna · lead #### Identity - Project: Rogozna - Commodity: lead - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:f0ee244afe29c8e6a357 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 130000000 - Grade: 0.21 - Grade Unit: % - Contained Metal: 442 - Contained Unit: kt - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Inferred lead resource at Shanac contributes to the polymetallic nature of the deposit, but its confidence level is lower. - Positive factor: Large contained lead adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.21 Context: 130 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-10) Rogozna · zinc #### Identity - Project: Rogozna - Commodity: zinc - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:f0ee244afe29c8e6a357 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 130000000 - Grade: 0.34 - Grade Unit: % - Contained Metal: 2.3 - Contained Unit: kt - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Inferred zinc resource at Shanac adds to the polymetallic potential, but the reported contained metal value is highly questionable due to a likely typo in the source document, and its confidence level is lower. - Positive factor: Contributes to polymetallic nature of the deposit - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Reported contained metal value appears to be a typo, significantly understating the calculated contained metal Evidence · table > 0.34 Context: 130 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-11) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-04-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:f0ee244afe29c8e6a357 - Deposit or zone: Shanac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 130000000 - Contained Metal: 4.1 - Contained Unit: moz - Cutoff Grade: 0.6 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 0.98 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Inferred AuEq resource at Shanac is a major component of the project's total, but its lower confidence category highlights the need for further de-risking. - Positive factor: Large contained AuEq adds significantly to overall resource - Positive factor: Assumptions for metal equivalent calculation are disclosed - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.98 Context: 130 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-12) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-05-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e795144f02b0965a86ee - Deposit or zone: Gradina - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 20000000 - Grade: 2.8 - Grade Unit: g/t - Contained Metal: 1.8 - Contained Unit: moz - Cutoff Grade: 1.5 - Cutoff Unit: g/t Au #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Gradina Inferred resource presents a high-grade gold system with substantial contained metal, making it a key asset for the project, though further drilling is needed to upgrade confidence. - Positive factor: High gold grade of 2.8 g/t - Positive factor: Significant contained gold of 1.8 Moz - Positive factor: JORC 2012 compliant with QP sign-off - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 2.8 Context: 20 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-13) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-05-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e795144f02b0965a86ee - Deposit or zone: Gradina - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 20000000 - Contained Metal: 1.8 - Contained Unit: moz - Cutoff Grade: 1.5 - Cutoff Unit: g/t Au #### Metal Equivalent - Metal Eq. Grade: 2.8 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Gradina Inferred AuEq resource highlights a high-grade system with substantial contained metal, with transparent metal equivalent calculations, but requires further confidence upgrade. - Positive factor: High AuEq grade of 2.8 g/t - Positive factor: Significant contained AuEq of 1.8 Moz - Positive factor: Assumptions for metal equivalent calculation are disclosed - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 2.8 Context: 20 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-14) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2025-02-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:894e59b9130453d97b37 - Deposit or zone: Medenovac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 21000000 - Grade: 0.77 - Grade Unit: g/t - Contained Metal: 0.52 - Contained Unit: moz - Cutoff Grade: 1 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Medenovac Inferred gold resource adds to the project's total, but its lower confidence and older effective date suggest it may require further work and updating. - Positive factor: Contributes to overall project resource base - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Estimate is older \(February 2025\) Evidence · table > 0.77 Context: 21 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-15) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2025-02-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:894e59b9130453d97b37 - Deposit or zone: Medenovac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 21000000 - Grade: 0.27 - Grade Unit: % - Contained Metal: 57 - Contained Unit: kt - Cutoff Grade: 1 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Medenovac Inferred copper resource adds to the polymetallic value, but its lower confidence and older effective date suggest it may require further work. - Positive factor: Contributes to polymetallic nature of the deposit - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Estimate is older \(February 2025\) Evidence · table > 0.27 Context: 21 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-16) Rogozna · silver #### Identity - Project: Rogozna - Commodity: silver - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2025-02-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:894e59b9130453d97b37 - Deposit or zone: Medenovac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 21000000 - Grade: 6.3 - Grade Unit: g/t - Contained Metal: 4.3 - Contained Unit: moz - Cutoff Grade: 1 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Medenovac Inferred silver resource adds to the polymetallic value, but its lower confidence and older effective date suggest it may require further work. - Positive factor: Contributes to polymetallic nature of the deposit - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Estimate is older \(February 2025\) Evidence · table > 6.3 Context: 21 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-17) Rogozna · lead #### Identity - Project: Rogozna - Commodity: lead - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2025-02-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:894e59b9130453d97b37 - Deposit or zone: Medenovac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 21000000 - Grade: 0.11 - Grade Unit: % - Contained Metal: 23 - Contained Unit: kt - Cutoff Grade: 1 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Medenovac Inferred lead resource adds to the polymetallic value, but its lower confidence and older effective date suggest it may require further work. - Positive factor: Contributes to polymetallic nature of the deposit - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Estimate is older \(February 2025\) Evidence · table > 0.11 Context: 21 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-18) Rogozna · zinc #### Identity - Project: Rogozna - Commodity: zinc - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2025-02-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:894e59b9130453d97b37 - Deposit or zone: Medenovac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 21000000 - Grade: 1.54 - Grade Unit: % - Contained Metal: 320 - Contained Unit: kt - Cutoff Grade: 1 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Medenovac Inferred zinc resource, with substantial contained metal, enhances the polymetallic value, but its confidence level and age suggest further work is needed. - Positive factor: Significant contained zinc adds to polymetallic nature of the deposit - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Estimate is older \(February 2025\) Evidence · table > 1.54 Context: 21 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-19) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2025-02-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:894e59b9130453d97b37 - Deposit or zone: Medenovac - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 21000000 - Contained Metal: 1.28 - Contained Unit: moz - Cutoff Grade: 1 - Cutoff Unit: g/t AuEq #### Metal Equivalent - Metal Eq. Grade: 1.9 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Medenovac Inferred AuEq resource adds to the project's total, but its lower confidence and older effective date suggest it may require further work and updating. - Positive factor: Contributes to overall project resource base - Positive factor: Assumptions for metal equivalent calculation are disclosed - Negative factor: Inferred category indicates lower geological confidence - Negative factor: Estimate is older \(February 2025\) Evidence · table > 1.9 Context: 21 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-20) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:84a347d5f708beda9ae4 - Deposit or zone: Copper Canyon - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 16000000 - Grade: 1.3 - Grade Unit: g/t - Contained Metal: 0.65 - Contained Unit: moz - Cutoff Grade: 76 - Cutoff Unit: US$/t NSR #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Copper Canyon Inferred gold resource provides a recent and significant contribution to the project, with a good grade, but its confidence level needs to be upgraded. - Positive factor: Good gold grade and contained metal - Positive factor: Recent estimate \(July 2026\) - Positive factor: JORC 2012 compliant with QP sign-off - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 1.3 Context: 16 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-21) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:84a347d5f708beda9ae4 - Deposit or zone: Copper Canyon - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 16000000 - Grade: 0.45 - Grade Unit: % - Contained Metal: 72 - Contained Unit: kt - Cutoff Grade: 76 - Cutoff Unit: US$/t NSR #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Copper Canyon Inferred copper resource provides a recent and significant contribution to the project, with a good grade, but its confidence level needs to be upgraded. - Positive factor: Good copper grade and contained metal - Positive factor: Recent estimate \(July 2026\) - Positive factor: Contributes to polymetallic nature of the deposit - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.45 Context: 16 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-22) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:84a347d5f708beda9ae4 - Deposit or zone: Copper Canyon - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 16000000 - Contained Metal: 0.82 - Contained Unit: moz - Cutoff Grade: 76 - Cutoff Unit: US$/t NSR #### Metal Equivalent - Metal Eq. Grade: 1.6 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Copper Canyon Inferred AuEq resource provides a recent and significant contribution to the project, with transparent metal equivalent calculations, but its confidence level needs to be upgraded. - Positive factor: Good AuEq grade and contained metal - Positive factor: Recent estimate \(July 2026\) - Positive factor: Assumptions for metal equivalent calculation are disclosed - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 1.6 Context: 16 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Disclosed** Polarity: positive Definition: Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. Why it applies: cutoff\_grade is stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-23) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e04c90e9be33f148e41b - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.83 - Grade Unit: g/t - Contained Metal: 0.8 - Contained Unit: moz #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Indicated gold resource represents a solid foundation with reasonable geological confidence and good contained metal, contributing positively to the overall project. - Positive factor: Indicated category provides reasonable geological confidence for a significant portion of the total resource - Positive factor: Good gold grade and contained metal Evidence · table > 0.83 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-24) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e04c90e9be33f148e41b - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.13 - Grade Unit: % - Contained Metal: 39 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Indicated copper resource adds to the polymetallic value with reasonable confidence, contributing to the overall project economics. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Contributes to polymetallic nature of the project Evidence · table > 0.13 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-25) Rogozna · silver #### Identity - Project: Rogozna - Commodity: silver - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e04c90e9be33f148e41b - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 7.2 - Grade Unit: g/t - Contained Metal: 6.9 - Contained Unit: moz #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Indicated silver resource, with a good grade and contained metal, enhances the polymetallic nature and overall economic potential with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Significant contained silver adds to polymetallic value Evidence · table > 7.20 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-26) Rogozna · lead #### Identity - Project: Rogozna - Commodity: lead - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e04c90e9be33f148e41b - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.29 - Grade Unit: % - Contained Metal: 87 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Indicated lead resource adds to the polymetallic value with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Contributes to polymetallic nature of the project Evidence · table > 0.29 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-27) Rogozna · zinc #### Identity - Project: Rogozna - Commodity: zinc - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e04c90e9be33f148e41b - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Grade: 0.36 - Grade Unit: % - Contained Metal: 108 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Indicated zinc resource adds to the polymetallic value with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Contributes to polymetallic nature of the project Evidence · table > 0.36 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### indicated [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-28) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:e04c90e9be33f148e41b - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: indicated - Tonnes: 30000000 - Contained Metal: 1.25 - Contained Unit: moz #### Metal Equivalent - Metal Eq. Grade: 1.3 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Indicated AuEq resource represents a solid and transparent contribution to the overall value with reasonable confidence. - Positive factor: Indicated category provides reasonable geological confidence - Positive factor: Significant AuEq grade and contained metal - Positive factor: Assumptions for metal equivalent calculation are disclosed Evidence · table > 1.30 Context: 30 #### Tags used in scoring **Indicated Resource** Polarity: positive Definition: Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. Why it applies: category is "indicated" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-29) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:af20f9fec88f9dea4f84 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 187000000 - Grade: 0.88 - Grade Unit: g/t - Contained Metal: 5.27 - Contained Unit: moz #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Inferred gold resource adds substantial tonnage and contained metal, but its lower confidence category means further drilling is required for de-risking. - Positive factor: Large tonnage contributes significantly to overall resource - Positive factor: Good contained gold for an Inferred resource - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.88 Context: 187 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-30) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:af20f9fec88f9dea4f84 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 187000000 - Grade: 0.14 - Grade Unit: % - Contained Metal: 272 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Inferred copper resource contributes to the polymetallic nature, but its lower confidence category requires further validation. - Positive factor: Large contained copper adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.14 Context: 187 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-31) Rogozna · silver #### Identity - Project: Rogozna - Commodity: silver - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:af20f9fec88f9dea4f84 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 187000000 - Grade: 4.95 - Grade Unit: g/t - Contained Metal: 29.8 - Contained Unit: moz #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Inferred silver resource, with substantial contained metal, enhances the polymetallic value, but its confidence level is lower. - Positive factor: Significant contained silver adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 4.95 Context: 187 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-32) Rogozna · lead #### Identity - Project: Rogozna - Commodity: lead - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:af20f9fec88f9dea4f84 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 187000000 - Grade: 0.16 - Grade Unit: % - Contained Metal: 296 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Inferred lead resource contributes to the polymetallic nature, but its confidence level is lower. - Positive factor: Large contained lead adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.16 Context: 187 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-33) Rogozna · zinc #### Identity - Project: Rogozna - Commodity: zinc - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:af20f9fec88f9dea4f84 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 187000000 - Grade: 0.41 - Grade Unit: % - Contained Metal: 762 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Inferred zinc resource, with substantial contained metal, enhances the polymetallic value, but its confidence level is lower. - Positive factor: Significant contained zinc adds to polymetallic potential - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 0.41 Context: 187 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-34) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:af20f9fec88f9dea4f84 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 187000000 - Contained Metal: 8 - Contained Unit: moz #### Metal Equivalent - Metal Eq. Grade: 1.35 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The project's total Inferred AuEq resource is a major component, but its lower confidence category highlights the need for further de-risking. - Positive factor: Large contained AuEq adds significantly to overall resource - Positive factor: Assumptions for metal equivalent calculation are disclosed - Negative factor: Inferred category indicates lower geological confidence Evidence · table > 1.35 Context: 187 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-35) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:8b2c0cdd8a280cc3b801 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 217000000 - Grade: 0.87 - Grade Unit: g/t - Contained Metal: 6.07 - Contained Unit: moz #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Rogozna project boasts a very large total gold resource, but the high proportion of Inferred material indicates that significant work is still needed to upgrade confidence. - Positive factor: Very large total tonnage and contained gold - Positive factor: JORC 2012 compliant with QP sign-off - Negative factor: High proportion of Inferred resources \(8.00 Moz AuEq out of 9.25 Moz AuEq total\) Evidence · table > 0.87 Context: 217 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-36) Rogozna · copper #### Identity - Project: Rogozna - Commodity: copper - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:8b2c0cdd8a280cc3b801 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 217000000 - Grade: 0.14 - Grade Unit: % - Contained Metal: 311 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Rogozna project's total copper resource is substantial, enhancing its polymetallic nature, but the high proportion of Inferred material indicates lower confidence. - Positive factor: Significant total contained copper adds to polymetallic value - Negative factor: High proportion of Inferred resources Evidence · table > 0.14 Context: 217 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-37) Rogozna · silver #### Identity - Project: Rogozna - Commodity: silver - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:8b2c0cdd8a280cc3b801 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 217000000 - Grade: 5.26 - Grade Unit: g/t - Contained Metal: 36.7 - Contained Unit: moz #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Rogozna project's total silver resource is substantial, enhancing its polymetallic nature, but the high proportion of Inferred material indicates lower confidence. - Positive factor: Significant total contained silver adds to polymetallic value - Negative factor: High proportion of Inferred resources Evidence · table > 5.26 Context: 217 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-38) Rogozna · lead #### Identity - Project: Rogozna - Commodity: lead - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:8b2c0cdd8a280cc3b801 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 217000000 - Grade: 0.18 - Grade Unit: % - Contained Metal: 383 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Rogozna project's total lead resource is substantial, enhancing its polymetallic nature, but the high proportion of Inferred material indicates lower confidence. - Positive factor: Significant total contained lead adds to polymetallic value - Negative factor: High proportion of Inferred resources Evidence · table > 0.18 Context: 217 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-39) Rogozna · zinc #### Identity - Project: Rogozna - Commodity: zinc - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:8b2c0cdd8a280cc3b801 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 217000000 - Grade: 0.4 - Grade Unit: % - Contained Metal: 870 - Contained Unit: kt #### Metal Equivalent - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Rogozna project's total zinc resource is substantial, enhancing its polymetallic nature, but the high proportion of Inferred material indicates lower confidence. - Positive factor: Significant total contained zinc adds to polymetallic value - Negative factor: High proportion of Inferred resources Evidence · table > 0.40 Context: 217 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ### inferred [Link to this fact](https://atlas-staging.minestarters.com/news/stk-north-american-conference-presentation--e5923b22-a8b4-4b34-b886-00fadf9ab1d2#fact-resource-facts-40) Rogozna · gold #### Identity - Project: Rogozna - Commodity: gold - Region: serbia - Reported Region: Serbia - Ticker: STK #### Resource scope - Estimate type: resource - Effective date: 2026-07-01T00:00:00.000Z - Reporting standards: jorc - QP Signed: Yes - Resource group id: resource:8b2c0cdd8a280cc3b801 - Deposit or zone: Project Total - Mining method: underground - Ownership percent: 100 % #### Resource Data - Category: inferred - Tonnes: 217000000 - Contained Metal: 9.25 - Contained Unit: moz #### Metal Equivalent - Metal Eq. Grade: 1.33 - Metal Eq. Unit: g/t AuEq - Assumptions Disclosed: Yes #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: The Rogozna project's total AuEq resource is very large, but the high proportion of Inferred material indicates that significant work is still needed to upgrade confidence. - Positive factor: Very large total AuEq resource of 9.25 Moz - Positive factor: Assumptions for metal equivalent calculation are disclosed - Negative factor: High proportion of Inferred resources \(8.00 Moz AuEq out of 9.25 Moz AuEq total\) Evidence · table > 1.33 Context: 217 #### Tags used in scoring **Inferred Resource** Polarity: negative Definition: Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. Why it applies: category is "inferred" **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated **QP/CP Signed** Polarity: positive Definition: Qualified Person \(QP\) or Competent Person \(CP\) named and signed off — a member of a recognized professional association \(e.g., AusIMM, SME, AIG, P.Geo\) with relevant experience. Why it applies: qp\_signed is true **JORC Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with JORC Code \(Australia\) — high reporting standard. Why it applies: reporting\_standards includes jorc **Resource Update** Polarity: neutral Definition: Revised estimate for an existing resource — compare to prior to assess progress. Why it applies: the release compares against a previous estimate **PEA-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. Why it applies: the release names the study this estimate supports **PFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. Why it applies: the release names the study this estimate supports **DFS-Supporting** Polarity: neutral Definition: Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. Why it applies: the release names the study this estimate supports ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.