# Osisko Gold Announces Formal Construction Decision and Development Update for the Cariboo Gold Project

Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a

Original source: https://www.globenewswire.com/news-release/2026/09/14/3360918/0/en/osisko-gold-announces-formal-construction-decision-and-development-update-for-the-cariboo-gold-project.html

Publisher: globenewswire

Original announcement: 2026-09-14T11:00:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: Unknown date

Atlas analysis updated: Unknown date

- Company: Osisko Gold Group Inc.

- Ticker: OGG

- Exchange: Unavailable

- Region: British Columbia, Canada

- Primary commodity: Gold

- Secondary commodities: None reported

- Document categories: Resource update, Production, Agreement transaction

- Extracted: 2026-09-14 12:33:59 UTC

Narrative sentiment: 0.90 · Bullish

## Minestarters Atlas summary

Osisko Gold Group Inc. has announced a formal positive construction decision for its 100%-owned Cariboo Gold Project in British Columbia, Canada, with first gold pour expected in Q1 2029. The decision is supported by a US$30 million private placement from Trafigura, concentrate and doré off-take agreements, and a potential US$120 million prepayment facility. The updated go-forward capital obligation is C$990 million, and project economics show a robust after-tax NPV5% of C$3.2 billion and IRR of 42.7% at spot gold prices, with all necessary permits already secured.

Reasoning: Osisko Gold has made a formal positive construction decision for its Cariboo Gold Project, backed by substantial financing agreements and updated project economics demonstrating strong returns, marking a significant de-risking and advancement towards production.

- Positive factor: Formal construction decision made for flagship project

- Positive factor: Significant financing secured through private placement and potential prepayment facility

- Positive factor: Offtake agreements in place for concentrate and doré

- Positive factor: Robust project economics with high NPV and IRR at current gold prices

- Positive factor: All necessary permits obtained for construction and operation

- Positive factor: Project completion progressing well

- Negative factor: Construction period extended slightly compared to prior estimates

- Negative factor: Potential for dilution from warrant exercise

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 30

## Classification and evidence

**Formal Construction Decision**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The Board of Directors has made a formal positive decision to proceed with the construction of the Company's 100%-owned Cariboo Gold Project.

Evidence · text

> Positive formal construction decision on the Cariboo Gold Project made by the Board of Directors

**Capital Raise**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The company announced a US$30 million strategic private placement from an affiliate of Trafigura and a potential prepayment facility of up to US$120 million.

Evidence · text

> US$30 million strategic private placement from an affiliate of Trafigura, concentrate and doré off-take from Trafigura, and potential prepayment facility of up to US$120 million

**Offtake Agreement**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: Offtake agreements are in place with Trafigura for 100% of the gold concentrate and gold doré for the first four years of production.

Evidence · text

> offtake agreements between Barkerville and Trafigura for 100% of the \(x\) gold concentrate for the first four years of production at the Cariboo Gold Project \(or until 80,000 dry metric tons of concentrate are delivered\) and \(y\) gold doré for the first four years of production

**Permitting Complete**

Polarity: positive

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The Project obtained all permits necessary for construction, operation, and closure in Q4 2024 with the receipt of the Mines Act \(British Columbia\) and Environmental Management Act \(British Columbia\) permits.

Evidence · text

> The Project obtained all permits necessary for construction, operation, and closure in Q4 2024 with the receipt of the Mines Act \(British Columbia\) and Environmental Management Act \(British Columbia\) permits.

**NI 43-101 Compliant**

Polarity: positive

Definition: Resource estimate prepared in compliance with NI 43-101 \(Canada\) — high reporting standard.

Why it applies: The mineral reserve and resource estimates follow the 2014 CIM Definition Standards and 2019 CIM Estimation Best Practice Guidelines, and the Cariboo Technical Report was prepared in accordance with NI 43-101.

Evidence · text

> The Cariboo Technical Report was prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects \(" NI 43-101 "\)

**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: Scott Smith, P. Geo., Carl Pelletier, P.Geo., and Tessa Scott, P.Geo. are named as qualified persons responsible for the scientific and technical information and mineral resource estimates.

Evidence · text

> The scientific and technical information contained in this news release has been reviewed, verified and approved by Scott Smith, P. Geo., Vice President, Exploration of Osisko Gold, a "qualified person" within the meaning of NI 43-101.

**Resource Update**

Polarity: neutral

Definition: Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The document includes detailed tables for the Cariboo Gold Project Mineral Reserves Statement \(April 10, 2025\) and Mineral Resources Statement \(April 22, 2025\).

Evidence · text

> Mineral Reserves Estimate – Cariboo Gold Project

**Infill Drilling**

Polarity: neutral

Story-specific tag

Definition: Confirmatory drilling to raise resource confidence, not new discovery.

Why it applies: Underground development is advancing to enable infill drilling to support resource conversion, expected to commence at the end of September 2026.

Evidence · text

> infill drilling to support resource conversion, which is expected to commence at the end of September 2026.

## Extracted facts

Stored fact records: 25. Some facts used in scoring do not have a stored record.

## Resource Estimates (25)

### probable

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-2)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Scott Smith, P. Geo.
- Resource group id: resource:ee69ce5a3608c1e2d4da
- Deposit or zone: Cow
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: probable
- Tonnes: 3999971
- Grade: 3.35
- Grade Unit: g/t
- Contained Metal: 430548
- Contained Unit: oz
- Cutoff Grade: 1.7
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-10

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Cow zone contributes a substantial portion to the overall probable mineral reserves with good gold grade.

- Positive factor: Significant probable reserve tonnage and grade

Evidence · table

> 3.35

Context: 3,999,971

#### 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 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

**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

**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

### probable

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-3)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Scott Smith, P. Geo.
- Resource group id: resource:3116a8bd2ae00159e80b
- Deposit or zone: Valley
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: probable
- Tonnes: 3238636
- Grade: 3.59
- Grade Unit: g/t
- Contained Metal: 374058
- Contained Unit: oz
- Cutoff Grade: 1.7
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-10

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Valley zone adds to the probable mineral reserves with a solid gold grade.

- Positive factor: Good probable reserve tonnage and grade

Evidence · table

> 3.59

Context: 3,238,636

#### 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 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

**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

**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

### probable

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-4)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Scott Smith, P. Geo.
- Resource group id: resource:908ffa6a3399ae1bf400
- Deposit or zone: Shaft
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: probable
- Tonnes: 8548295
- Grade: 3.72
- Grade Unit: g/t
- Contained Metal: 1021599
- Contained Unit: oz
- Cutoff Grade: 1.7
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-10

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Shaft zone is the largest contributor to the probable mineral reserves with the highest gold grade, significantly impacting the project's economics.

- Positive factor: Largest probable reserve tonnage and highest grade

Evidence · table

> 3.72

Context: 8,548,295

#### 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 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

**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

**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

### probable

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-5)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Scott Smith, P. Geo.
- Resource group id: resource:5330616d34c531db0a00
- Deposit or zone: Mosquito
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: probable
- Tonnes: 1105370
- Grade: 3.94
- Grade Unit: g/t
- Contained Metal: 140102
- Contained Unit: oz
- Cutoff Grade: 1.7
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-10

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Mosquito zone provides high-grade probable reserves, contributing to the overall project value.

- Positive factor: High-grade probable reserve

Evidence · table

> 3.94

Context: 1,105,370

#### 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 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

**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

**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

### probable

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-6)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Scott Smith, P. Geo.
- Resource group id: resource:e77411863ea87af22448
- Deposit or zone: Lowhee
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: probable
- Tonnes: 923162
- Grade: 3.52
- Grade Unit: g/t
- Contained Metal: 104491
- Contained Unit: oz
- Cutoff Grade: 1.7
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-10

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Lowhee zone contributes to the probable mineral reserves with a good gold grade.

- Positive factor: Probable reserve with good gold grade

Evidence · table

> 3.52

Context: 923,162

#### 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 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

**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

**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

### probable

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-7)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Scott Smith, P. Geo.
- Resource group id: resource:8f31db7b4a890ab1ee4e
- Deposit or zone: Total Proven & Probable
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: probable
- Tonnes: 17815435
- Grade: 3.62
- Grade Unit: g/t
- Contained Metal: 2070798
- Contained Unit: oz
- Cutoff Grade: 1.7
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-10

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Cariboo Gold Project has a substantial total probable mineral reserve, providing a strong foundation for the construction decision.

- Positive factor: Large total probable reserve with strong gold grade

Evidence · table

> 3.62

Context: 17,815,435

#### 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 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

**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

**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

### measured

[Link to this fact](https://atlas-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-8)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:e8d1c641dbc32b08f0d6
- Deposit or zone: Bonanza Ledge
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: measured
- Tonnes: 47000
- Grade: 5.06
- Grade Unit: g/t
- Contained Metal: 8000
- Contained Unit: oz
- Cutoff Grade: 3.5
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Bonanza Ledge zone contains a high-grade measured resource, indicating high confidence in this portion of the deposit.

- Positive factor: High-grade measured resource

Evidence · table

> 5.06

Context: 47

#### 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 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-9)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:0ea102df8a457c22c5f7
- Deposit or zone: Bonanza Ledge
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 32000
- Grade: 4.02
- Grade Unit: g/t
- Contained Metal: 4000
- Contained Unit: oz
- Cutoff Grade: 3.5
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Bonanza Ledge zone also contains a high-grade indicated resource, adding to the overall resource confidence.

- Positive factor: High-grade indicated resource

Evidence · table

> 4.02

Context: 32

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-10)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:6c2a742bb1b9bd0dc883
- Deposit or zone: BC Vein
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 1057000
- Grade: 3
- Grade Unit: g/t
- Contained Metal: 102000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The BC Vein zone contributes a moderate indicated resource with a good gold grade.

- Positive factor: Indicated resource with good gold grade

Evidence · table

> 3.00

Context: 1,057

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-11)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:5affe4f0e1c7abf6a4ef
- Deposit or zone: KL
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 527000
- Grade: 2.8
- Grade Unit: g/t
- Contained Metal: 47000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The KL zone provides an indicated resource with an economic gold grade.

- Positive factor: Indicated resource with economic gold grade

Evidence · table

> 2.80

Context: 527

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-12)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:4d55e826c783aa00e242
- Deposit or zone: Lowhee
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 1333000
- Grade: 2.76
- Grade Unit: g/t
- Contained Metal: 118000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Lowhee zone contributes an indicated resource with an economic gold grade.

- Positive factor: Indicated resource with economic gold grade

Evidence · table

> 2.76

Context: 1,333

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-13)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:e960dd813d71ef185341
- Deposit or zone: Mosquito
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 1553000
- Grade: 2.96
- Grade Unit: g/t
- Contained Metal: 148000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Mosquito zone provides a good indicated resource with a solid gold grade.

- Positive factor: Indicated resource with good gold grade

Evidence · table

> 2.96

Context: 1,553

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-14)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:378eca7436bf6ceffda6
- Deposit or zone: Shaft
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 6121000
- Grade: 2.92
- Grade Unit: g/t
- Contained Metal: 575000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Shaft zone is a major contributor to the indicated mineral resources with a good gold grade.

- Positive factor: Significant indicated resource with good gold grade

Evidence · table

> 2.92

Context: 6,121

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-15)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:a316bd8e00019f602294
- Deposit or zone: Valley
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 2718000
- Grade: 2.7
- Grade Unit: g/t
- Contained Metal: 236000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Valley zone provides a substantial indicated resource with an economic gold grade.

- Positive factor: Indicated resource with economic gold grade

Evidence · table

> 2.70

Context: 2,718

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-16)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:0cb8e29e57deceb82c22
- Deposit or zone: Cow
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 3991000
- Grade: 2.91
- Grade Unit: g/t
- Contained Metal: 374000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Cow zone contributes a significant indicated resource with a good gold grade.

- Positive factor: Significant indicated resource with good gold grade

Evidence · table

> 2.91

Context: 3,991

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-17)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:cec3f93ac117c3fb8a06
- Deposit or zone: Total Indicated Resources
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 17332000
- Grade: 2.88
- Grade Unit: g/t
- Contained Metal: 1604000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The project has a substantial total indicated mineral resource, providing a strong base for future development.

- Positive factor: Large total indicated resource with good gold grade

Evidence · table

> 2.88

Context: 17,332

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-18)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:a13e0419a906583a45cd
- Deposit or zone: Total Measured & Indicated
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: indicated
- Tonnes: 17380000
- Grade: 2.88
- Grade Unit: g/t
- Contained Metal: 1612000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The combined measured and indicated resources provide a high level of confidence for the project's economic viability.

- Positive factor: Large total measured and indicated resource with good gold grade

Evidence · table

> 2.88

Context: 17,380

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-19)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:c6b118e2b629a15527a7
- Deposit or zone: BC Vein
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 596000
- Grade: 3.17
- Grade Unit: g/t
- Contained Metal: 61000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The BC Vein zone contains an inferred resource with a good gold grade, indicating potential for future conversion.

- Positive factor: Inferred resource with good gold grade

Evidence · table

> 3.17

Context: 596

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-20)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:7a36b844875f755de146
- Deposit or zone: KL
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 2514000
- Grade: 2.53
- Grade Unit: g/t
- Contained Metal: 205000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The KL zone provides a substantial inferred resource with an economic gold grade, offering future exploration potential.

- Positive factor: Inferred resource with economic gold grade

Evidence · table

> 2.53

Context: 2,514

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-21)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:8bb34b777896abfbe683
- Deposit or zone: Lowhee
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 486000
- Grade: 3.01
- Grade Unit: g/t
- Contained Metal: 47000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Lowhee zone contains an inferred resource with a good gold grade, indicating potential for future conversion.

- Positive factor: Inferred resource with good gold grade

Evidence · table

> 3.01

Context: 486

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-22)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:b119c5471386056cf575
- Deposit or zone: Mosquito
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 1883000
- Grade: 3.08
- Grade Unit: g/t
- Contained Metal: 186000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Mosquito zone provides a good inferred resource with a solid gold grade, offering future exploration potential.

- Positive factor: Inferred resource with good gold grade

Evidence · table

> 3.08

Context: 1,883

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-23)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:1c687988531e4726d4b8
- Deposit or zone: Shaft
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 7457000
- Grade: 3.44
- Grade Unit: g/t
- Contained Metal: 826000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Shaft zone is the largest contributor to the inferred mineral resources with a strong gold grade, representing significant future potential.

- Positive factor: Largest inferred resource with strong gold grade

Evidence · table

> 3.44

Context: 7,457

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-24)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:e9ade1850c6d0fc9c3e0
- Deposit or zone: Valley
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 2470000
- Grade: 3.01
- Grade Unit: g/t
- Contained Metal: 239000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Valley zone provides a substantial inferred resource with a good gold grade, indicating potential for future upgrades.

- Positive factor: Inferred resource with good gold grade

Evidence · table

> 3.01

Context: 2,470

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-25)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:5c195512e3955e8a1f0f
- Deposit or zone: Cow
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 3368000
- Grade: 2.78
- Grade Unit: g/t
- Contained Metal: 301000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The Cow zone contributes a significant inferred resource with an economic gold grade, offering future exploration potential.

- Positive factor: Significant inferred resource with economic gold grade

Evidence · table

> 2.78

Context: 3,368

#### 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

**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

**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-extractions.minestarters.com/news/osisko-gold-announces-formal-construction-decision-and-development-update-for-th--e454a5f1-fb63-435a-b2c7-02332e09cf3a#fact-resource-facts-26)

Cariboo Gold Project · gold

#### Identity

- Project: Cariboo Gold Project
- Commodity: gold
- Region: canada\_bc
- Reported Region: British Columbia, Canada
- Ticker: OGG

#### Resource scope

- Estimate type: resource
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Carl Pelletier, P.Geo., Tessa Scott, P.Geo.
- Resource group id: resource:4e1937754bef13adff48
- Deposit or zone: Total Inferred Resources
- Mining method: underground
- Ownership percent: 100 %

#### Resource Data

- Category: inferred
- Tonnes: 18774000
- Grade: 3.09
- Grade Unit: g/t
- Contained Metal: 1864000
- Contained Unit: oz
- Cutoff Grade: 1.8
- Cutoff Unit: g/t Au

#### Prior Estimate

- Resource Date: 2025-04-22

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-09-14T00:00:00.000Z

Reasoning: The project has a substantial total inferred mineral resource, indicating significant long-term exploration potential.

- Positive factor: Large total inferred resource with good gold grade

Evidence · table

> 3.09

Context: 18,774

#### 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

**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

**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.