# Cameco Increases Ownership Stake in Cigar Lake Mine Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/cameco-increases-ownership-stake-in-cigar-lake-mine--3fbd441d-06eb-4e20-ab13-5c339b32e213 Original source: https://money.tmx.com/en/quote/CCO/news/7949174415906739/cameco-increases-ownership-stake-in-cigar-lake-mine Publisher: tmx Original announcement: 2026-06-01T10:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Cameco - Ticker: CCO - Exchange: TSX - Region: Saskatchewan - Primary commodity: Uranium - Secondary commodities: None reported - Document categories: Resource update, Agreement transaction - Extracted: 2026-09-17 14:56:32 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Cameco and Orano have agreed to acquire TEPCO's 5% interest in the Cigar Lake uranium mine for approximately $115.75 million. This transaction will increase Cameco's ownership to 57.4% and Orano's to 42.6%. The announcement also provides an update on the project's high-grade uranium reserves and resources as of December 31, 2025. Reasoning: Cameco is acquiring a 5% interest in the Cigar Lake JV for $115.75M, increasing its stake to 57.4%. The announcement also re-discloses high-grade uranium reserves and resources as of end-2025. - Positive factor: Strategic increase in ownership of a tier-one asset - Positive factor: High-grade uranium reserves and resources confirmed - Positive factor: Clear path to mine life extension to 2036 Facts used in scoring: 5 ## Classification and evidence **agreement\_transaction** Polarity: positive Story-specific tag Definition: No canonical definition is currently available. Why it applies: Cameco and Orano are acquiring TEPCO's 5% interest in the Cigar Lake JV. Evidence · text > Cameco \(TSX: CCO; NYSE: CCJ\) and Orano Canada Inc. \(Orano\) have reached agreement with TEPCO Resources Inc. \(TEPCO\) to acquire TEPCO’s 5% participating interest in the Cigar Lake Joint Venture. **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: Kirk Lamont and Scott Bishop are named as Qualified Persons for the technical information. Evidence · text > The technical and scientific information discussed in this document for Cigar Lake was approved by the following individuals who are qualified persons for the purposes of NI 43-101: Kirk Lamont, general manager, Cigar Lake, Cameco Scott Bishop, director, technical services, Cameco **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: The document explicitly states the technical information was approved by QPs for the purposes of NI 43-101. Evidence · text > qualified persons for the purposes of NI 43-101 ## Extracted facts Stored fact records: 4. Some facts used in scoring do not have a stored record. ## Resource Estimates (4) ### probable [Link to this fact](https://atlas-extractions.minestarters.com/news/cameco-increases-ownership-stake-in-cigar-lake-mine--3fbd441d-06eb-4e20-ab13-5c339b32e213#fact-resource-facts-1) Cigar Lake · uranium Historical result Needs review: historical\_restatement #### Identity - Project: Cigar Lake - Commodity: uranium - Region: canada\_sk - Reported Region: Saskatchewan - Ticker: CCO #### Resource scope - Estimate type: reserve - Effective date: 2025-12-31T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Kirk Lamont, Scott Bishop - Resource group id: resource:6bed2ceea593947b0753 - Deposit or zone: Cigar Lake - Mining method: underground #### Resource Data - Category: probable - Tonnes: 479000 - Grade: 16.33 - Grade Unit: % U3O8 - Contained Metal: 172.4 - Contained Unit: mlb u3o8 #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-12-31T00:00:00.000Z #### Dates - Event date: 2026-06-01T00:00:00.000Z Reasoning: Re-disclosure of high-grade reserves as of Dec 31, 2025. - Positive factor: Exceptional uranium grades Evidence · table > 16.33 Context: 479.0 #### Tags used in scoring **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: category is "probable" **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 **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release ### measured [Link to this fact](https://atlas-extractions.minestarters.com/news/cameco-increases-ownership-stake-in-cigar-lake-mine--3fbd441d-06eb-4e20-ab13-5c339b32e213#fact-resource-facts-2) Cigar Lake · uranium Historical result Needs review: historical\_restatement #### Identity - Project: Cigar Lake - Commodity: uranium - Region: canada\_sk - Reported Region: Saskatchewan - Ticker: CCO #### Resource scope - Estimate type: resource - Effective date: 2025-12-31T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Kirk Lamont, Scott Bishop - Resource group id: resource:076bcb159ad7f9739dd9 - Deposit or zone: Cigar Lake - Mining method: underground #### Resource Data - Category: measured - Tonnes: 263700 - Grade: 17.06 - Grade Unit: % U3O8 - Contained Metal: 99.2 - Contained Unit: mlb u3o8 #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-12-31T00:00:00.000Z #### Dates - Event date: 2026-06-01T00:00:00.000Z Reasoning: Re-disclosure of high-grade reserves as of Dec 31, 2025. - Positive factor: Exceptional uranium grades Evidence · table > 17.06 Context: 263.7 #### Tags used in scoring **Measured Resource** Polarity: positive Definition: Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. Why it applies: category is "measured" **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 **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release ### indicated [Link to this fact](https://atlas-extractions.minestarters.com/news/cameco-increases-ownership-stake-in-cigar-lake-mine--3fbd441d-06eb-4e20-ab13-5c339b32e213#fact-resource-facts-3) Cigar Lake · uranium Historical result Needs review: historical\_restatement #### Identity - Project: Cigar Lake - Commodity: uranium - Region: canada\_sk - Reported Region: Saskatchewan - Ticker: CCO #### Resource scope - Estimate type: resource - Effective date: 2025-12-31T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Kirk Lamont, Scott Bishop - Resource group id: resource:45868c61067c0441a258 - Deposit or zone: Cigar Lake - Mining method: underground #### Resource Data - Category: indicated - Tonnes: 153800 - Grade: 5.07 - Grade Unit: % U3O8 - Contained Metal: 17.2 - Contained Unit: mlb u3o8 #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-12-31T00:00:00.000Z #### Dates - Event date: 2026-06-01T00:00:00.000Z Reasoning: Re-disclosure of indicated resources as of Dec 31, 2025. Evidence · table > 5.07 Context: 153.8 #### 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 **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release ### inferred [Link to this fact](https://atlas-extractions.minestarters.com/news/cameco-increases-ownership-stake-in-cigar-lake-mine--3fbd441d-06eb-4e20-ab13-5c339b32e213#fact-resource-facts-4) Cigar Lake · uranium Historical result Needs review: historical\_restatement #### Identity - Project: Cigar Lake - Commodity: uranium - Region: canada\_sk - Reported Region: Saskatchewan - Ticker: CCO #### Resource scope - Estimate type: resource - Effective date: 2025-12-31T00:00:00.000Z - Reporting standards: ni\_43\_101 - QP Signed: Yes - Qualified person names: Kirk Lamont, Scott Bishop - Resource group id: resource:3ee63ad7d2604f42af39 - Deposit or zone: Cigar Lake - Mining method: underground #### Resource Data - Category: inferred - Tonnes: 163400 - Grade: 5.55 - Grade Unit: % U3O8 - Contained Metal: 20 - Contained Unit: mlb u3o8 #### Prior Estimate - Resource Date: 2025-12-31 #### Review - Needs Review: Yes - Review Reason: historical\_restatement - Historical: Yes - Historical Source Date: 2025-12-31T00:00:00.000Z #### Dates - Event date: 2026-06-01T00:00:00.000Z Reasoning: Re-disclosure of inferred resources as of Dec 31, 2025. Evidence · table > 5.55 Context: 163.4 #### 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 **NI 43-101 Compliant** Polarity: positive Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard. Why it applies: reporting\_standards includes ni\_43\_101 **No QP/CP Disclosure** Polarity: negative Definition: No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. Why it applies: no Qualified or Competent Person is named anywhere in the release ## 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.