Omai Gold Files NI 43-101 Technical Report Supporting a Preliminary Economic Assessment Indicating After-Tax NPV5% of $4.0 Billion at a $3,600/oz Gold Price for its Omai Gold Project

Original announcement by newsfile on

Company
Omai Gold Mines Corp.
Ticker
OMG
Exchange
Unavailable
Region
Guyana
Primary commodity
Gold
Secondary commodities
None reported
Document categories
Other, Resource update
Extracted
2026-10-05 13:02:30 UTC

Analysis by Minestarters Atlas

Atlas analysis published:

Minestarters Atlas analysis

Summary

Omai Gold Mines Corp. has filed a NI 43-101 Technical Report supporting a Preliminary Economic Assessment (PEA) for its Omai Gold Project in Guyana. The PEA indicates an after-tax NPV5% of $4.0 billion and a 24% IRR based on a $3,600/oz gold price, with projected life-of-mine production of 6.3 million ounces of gold.

Reasoning: The filing of a NI 43-101 Technical Report supporting a PEA with high economic indicators (NPV, IRR) for a large-scale gold project is a major value-driving milestone.

Positive factors

  • High NPV of $4.0 billion at $3,600/oz gold
  • Strong 24% after-tax IRR
  • Significant LOM gold production of 6.3 million ounces
  • Existing infrastructure and past producer status

Negative factors

  • PEA includes significant Inferred resource component
  • High initial capital requirement of $1.427 billion

Facts used in scoring: 2

Classification and evidence

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: The technical report supports a Preliminary Economic Assessment (PEA).

Evidence · text

“in support of the Preliminary Economic Assessment ("PEA")”

NI 43-101 Compliantpositive

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

Why it applies: The report is filed in accordance with NI 43-101 standards.

Evidence · text

“National Instrument 43-101 Technical Report”

Extracted facts

Stored fact records: 2. Some facts used in scoring do not have a stored record.

Resource Estimates (2)

indicatedOmai Gold Project · goldTonnes: 38100000Grade: 2.04Grade Unit: g/tContained Metal: 2.5Contained Unit: mozView all details
Link to this fact

Identity

Project
Omai Gold Project
Commodity
gold
Region
guyana
Reported Region
Guyana
Ticker
OMG

Resource scope

Estimate type
resource
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
David M. Robson, Goran Andric, Jeff Sepp, Linda Dufour, Stephan Theben, Alan J. San Martin, Elaine Ellingham
Resource group id
resource:9acb19d1d27ce8d05fa9
Deposit or zone
Wenot and Gilt
Mining method
combined
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
indicated
Tonnes
38100000
Grade
2.04
Grade Unit
g/t
Contained Metal
2.5
Contained Unit
moz

Prior Estimate

Resource Date
2026-04-14

Review

Needs Review
No
Historical
No

Dates

Event date
2026-10-05T00:00:00.000Z

Reasoning: Indicated resource component provides a strong foundation for the PEA.

Positive factors

  • Solid Indicated resource base

Evidence · text

“2.5 million ounces Indicated averaging 2.04 g/t Au in 38.1 million tonnes”

Tags used in scoring

Indicated Resourcepositive

Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.

Why it applies: category is "indicated"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

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 Compliantpositive

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

Why it applies: reporting_standards includes ni_43_101

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

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

inferredOmai Gold Project · goldTonnes: 106600000Grade: 1.59Grade Unit: g/tContained Metal: 5.5Contained Unit: mozView all details
Link to this fact

Identity

Project
Omai Gold Project
Commodity
gold
Region
guyana
Reported Region
Guyana
Ticker
OMG

Resource scope

Estimate type
resource
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
David M. Robson, Goran Andric, Jeff Sepp, Linda Dufour, Stephan Theben, Alan J. San Martin, Elaine Ellingham
Resource group id
resource:ef02a08d3a887b42a225
Deposit or zone
Wenot and Gilt
Mining method
combined
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
inferred
Tonnes
106600000
Grade
1.59
Grade Unit
g/t
Contained Metal
5.5
Contained Unit
moz

Prior Estimate

Resource Date
2026-04-14

Review

Needs Review
No
Historical
No

Dates

Event date
2026-10-05T00:00:00.000Z

Reasoning: Large inferred component adds scale but limits economic certainty in the PEA.

Positive factors

  • Large scale of inferred resource

Negative factors

  • High proportion of inferred material

Evidence · text

“5.5 million ounces Inferred averaging 1.59 g/t Au in 106.6 million tonnes”

Tags used in scoring

Inferred Resourcenegative

Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.

Why it applies: category is "inferred"

Cut-off Undisclosednegative

High-grade interval reported without stating the cut-off grade used for compositing.

Why it applies: no cutoff_grade was stated

QP/CP Signedpositive

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 Compliantpositive

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

Why it applies: reporting_standards includes ni_43_101

PEA-Supportingneutral

Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.

Why it applies: the release names the study this estimate supports

DFS-Supportingneutral

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.