# Decimus Announces 2025 Year End Financial Results And Reserves

Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4

Original source: https://orestocks.com/company/WCSB.V/press-releases/5412212368677312

Publisher: orestocks

Original announcement: 2026-05-01T03:15:00.000Z

Analysis by Minestarters Atlas

Atlas analysis published: 2026-10-01T04:00:45.583Z

Atlas analysis updated: 2026-10-01T04:00:45.583Z

- Company: Decimus Oil Corp.

- Ticker: WCSB

- Exchange: Unavailable

- Region: Southern Alberta

- Primary commodity: Oil equivalent

- Secondary commodities: Crude oil, Ngl, Natural gas

- Document categories: Resource update

- Extracted: 2026-10-01 04:00:46 UTC

Narrative sentiment: 0.10 · Bullish

## Minestarters Atlas summary

Decimus Oil Corp. announced its 2025 year-end financial results and reserve evaluation, reporting significant increases in reserve volumes across all categories \(PDP up 29%, TP up 18%, TPP up 14%\). Despite this, the net present value of these reserves, discounted at 10% before tax, saw substantial declines \(PDP down 61%, TP down 18%, TPP down 10%\), primarily due to lower commodity prices and higher fixed costs. The company highlighted successful waterflood activities and cost reduction initiatives contributing to the reserve growth.

Reasoning: Decimus Oil Corp. reported strong growth in reserve volumes for 2025, indicating successful operational initiatives. However, this positive volume growth was significantly offset by a substantial decline in the net present value of these reserves, primarily due to challenging commodity prices and increased fixed costs, leading to a mixed but slightly positive overall outlook given the underlying operational improvements.

- Positive factor: Significant reserve volume growth across all categories \(PDP +29%, TP +18%, TPP +14%\)

- Positive factor: Positive results from waterflood activities contributing to reserve growth and economic life extension

- Positive factor: Increased cash flow from operating activities by 230%

- Negative factor: Substantial decrease in Net Present Value \(NPV\) of reserves \(PDP -61%, TP -18%, TPP -10%\)

- Negative factor: NPV decline attributed to lower commodity prices and higher fixed costs

Facts used in scoring: 20

## Classification and evidence

**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 that the reserve evaluation adheres to 'National Instrument 51-101 –Standards of Disclosure for Oil and Gas Activities\(NI 51-101\)'.

Evidence · text

> National Instrument 51-101 –Standards of Disclosure for Oil and Gas Activities\(NI 51-101\)

**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: The reserve evaluation is based on 'Trimble Engineering Associates Ltd. December 31, 2025, forecast prices and costs', indicating a third-party qualified person's involvement.

Evidence · text

> Based on the Trimble Engineering Associates Ltd. December 31, 2025, forecast prices and costs.

**Tonnage Growth**

Polarity: positive

Definition: Significant tonnage increase \(≥15%\) vs prior estimate with grade maintained or improved.

Why it applies: Proved developed producing reserves increased by 29%, Total Proved reserves increased by 18%, and Total proved plus probable reserves increased by 14%.

Evidence · table

> 29%

Context: Proved developed producing

**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: Reserve volumes in MBOE increased across all categories: PDP by 29%, TP by 18%, and TPP by 14%.

Evidence · table

> 29%

Context: Proved developed producing

**Reserve Update**

Polarity: neutral

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The document provides an update on the company's year-end reserves evaluation for 2025.

Evidence · text

> highlights of the Company’s year-end reserves evaluation.

**NPV Decline**

Polarity: negative

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The NPV of reserves discounted at 10% before-tax decreased by 61% for PDP, 18% for Total Proved, and 10% for Total proved plus probable.

Evidence · table

> \(61%\)

Context: Proved developed producing

**Commodity Price Impact**

Polarity: negative

Story-specific tag

Definition: No canonical definition is currently available.

Why it applies: The decline in NPV was attributed to 'lower WTI AECO commodity prices' and 'lower commodity prices' in the narrative.

Evidence · text

> lower WTI AECO commodity prices

## Extracted facts

Stored fact records: 20. Some facts used in scoring do not have a stored record.

## Resource Estimates (20)

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-0)

Western Canadian Sedimentary Basin · crude oil

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: crude oil
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 122.6
- Contained Unit: mmbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This is a substantial volume of proved developed producing crude oil reserves, contributing positively to the company's asset base.

- Positive factor: Represents a significant portion of the company's proved developed producing reserves

Evidence · table

> 122.6

Context: Proved developed producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-1)

Western Canadian Sedimentary Basin · ngl

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: ngl
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 1.6
- Contained Unit: mbbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This represents a smaller but still positive contribution of NGLs to the proved developed producing reserve base.

- Positive factor: Adds to the company's proved developed producing reserves portfolio

Evidence · table

> 1.6

Context: Proved developed producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-2)

Western Canadian Sedimentary Basin · natural gas

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: natural gas
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 1614.1
- Contained Unit: mmcf

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This is a substantial volume of proved developed producing natural gas reserves, contributing positively to the company's asset base.

- Positive factor: Significant volume of proved developed producing natural gas reserves

Evidence · table

> 1,614.1

Context: Proved developed producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-3)

Western Canadian Sedimentary Basin · oil equivalent

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: oil equivalent
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 393.2
- Contained Unit: mboe

#### Prior Estimate

- Resource Date: 2025-12-31
- Prior Contained Metal: 304.9

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: The 29% increase in proved developed producing reserves \(MBOE\) is a strong positive signal, demonstrating successful conversion and additions to the most confident reserve category.

- Positive factor: Significant increase in proved developed producing reserves \(29%\)

- Positive factor: Indicates successful operational activities and reserve additions

Evidence · table

> 393.2

Context: Proved developed producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

**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: 393.2 against 304.9 previously

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-4)

Western Canadian Sedimentary Basin · crude oil

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: crude oil
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 39.7
- Contained Unit: mmbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This represents a solid volume of proved developed non-producing crude oil reserves, indicating future production potential.

- Positive factor: Adds to the company's proved developed non-producing crude oil reserves

Evidence · table

> 39.7

Context: Proved developed non-producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-5)

Western Canadian Sedimentary Basin · ngl

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: ngl
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 0.9
- Contained Unit: mbbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: A small but positive contribution of NGLs to the proved developed non-producing reserve base.

- Positive factor: Contributes to the proved developed non-producing NGL reserves

Evidence · table

> 0.9

Context: Proved developed non-producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-6)

Western Canadian Sedimentary Basin · natural gas

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: natural gas
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 2043.8
- Contained Unit: mmcf

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This represents a substantial volume of proved developed non-producing natural gas reserves, indicating future production potential.

- Positive factor: Significant volume of proved developed non-producing natural gas reserves

Evidence · table

> 2,043.8

Context: Proved developed non-producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-7)

Western Canadian Sedimentary Basin · oil equivalent

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: oil equivalent
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 381.2
- Contained Unit: mboe

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This volume of proved developed non-producing reserves contributes to the company's future production profile.

- Positive factor: Adds to the company's proved developed non-producing reserves, indicating future production potential

Evidence · table

> 381.2

Context: Proved developed non-producing

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-8)

Western Canadian Sedimentary Basin · crude oil

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: crude oil
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 162.2
- Contained Unit: mmbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This is a significant volume of total proved crude oil reserves, underpinning the company's long-term asset value.

- Positive factor: Represents a substantial total proved crude oil reserve base

Evidence · table

> 162.2

Context: Total Proved

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-9)

Western Canadian Sedimentary Basin · ngl

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: ngl
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 2.5
- Contained Unit: mbbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: A modest but positive contribution of NGLs to the total proved reserve base.

- Positive factor: Contributes to the total proved NGL reserves

Evidence · table

> 2.5

Context: Total Proved

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-10)

Western Canadian Sedimentary Basin · natural gas

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: natural gas
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 3658
- Contained Unit: mmcf

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This is a significant volume of total proved natural gas reserves, underpinning the company's long-term asset value.

- Positive factor: Represents a substantial total proved natural gas reserve base

Evidence · table

> 3,658.0

Context: Total Proved

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

### proven

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-11)

Western Canadian Sedimentary Basin · oil equivalent

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: oil equivalent
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:df2a78c65d7247dce4c9

#### Resource Data

- Category: proven
- Contained Metal: 1155.7
- Contained Unit: mboe

#### Prior Estimate

- Resource Date: 2025-12-31
- Prior Contained Metal: 655

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: The 18% increase in total proved reserves \(MBOE\) is a strong positive, indicating successful reserve additions and upgrades to a high confidence category.

- Positive factor: Significant increase in total proved reserves \(18%\)

- Positive factor: Demonstrates successful reserve additions and upgrades

Evidence · table

> 1,155.7

Context: Total Proved

#### Tags used in scoring

**Proven Reserve**

Polarity: positive

Definition: Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

**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

**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: 1155.7 against 655 previously

**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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-12)

Western Canadian Sedimentary Basin · crude oil

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: crude oil
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 174
- Contained Unit: mmbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This represents a substantial volume of probable crude oil reserves, contributing to the company's long-term resource base.

- Positive factor: Adds to the company's probable crude oil reserves, indicating future potential

Evidence · table

> 174

Context: Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-13)

Western Canadian Sedimentary Basin · ngl

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: ngl
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 0.9
- Contained Unit: mbbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: A small but positive contribution of NGLs to the probable reserve base.

- Positive factor: Contributes to the probable NGL reserves

Evidence · table

> 0.9

Context: Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-14)

Western Canadian Sedimentary Basin · natural gas

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: natural gas
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 931.5
- Contained Unit: mmcf

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This represents a solid volume of probable natural gas reserves, contributing to the company's long-term resource base.

- Positive factor: Adds to the company's probable natural gas reserves, indicating future potential

Evidence · table

> 931.5

Context: Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-15)

Western Canadian Sedimentary Basin · oil equivalent

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: oil equivalent
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 1930.1
- Contained Unit: mboe

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This represents a substantial volume of probable reserves, contributing to the company's long-term resource base.

- Positive factor: Significant volume of probable reserves, indicating future potential

Evidence · table

> 1,930.1

Context: Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-16)

Western Canadian Sedimentary Basin · crude oil

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: crude oil
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 336.2
- Contained Unit: mmbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This is a significant volume of total proved plus probable crude oil reserves, underpinning the company's long-term asset value.

- Positive factor: Represents a substantial total proved plus probable crude oil reserve base

Evidence · table

> 336.2

Context: Total Proved plus Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-17)

Western Canadian Sedimentary Basin · ngl

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: ngl
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 3.4
- Contained Unit: mbbls

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: A modest but positive contribution of NGLs to the total proved plus probable reserve base.

- Positive factor: Contributes to the total proved plus probable NGL reserves

Evidence · table

> 3.4

Context: Total Proved plus Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-18)

Western Canadian Sedimentary Basin · natural gas

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: natural gas
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 4589.5
- Contained Unit: mmcf

#### Prior Estimate

- Resource Date: 2025-12-31

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: This is a significant volume of total proved plus probable natural gas reserves, underpinning the company's long-term asset value.

- Positive factor: Represents a substantial total proved plus probable natural gas reserve base

Evidence · table

> 4,589.5

Context: Total Proved plus Probable

#### 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

### probable

[Link to this fact](https://atlas-staging.minestarters.com/news/decimus-announces-2025-year-end-financial-results-and-reserves--6dcc7c5c-3175-47bf-8650-fbe8d8c75fe4#fact-resource-facts-19)

Western Canadian Sedimentary Basin · oil equivalent

#### Identity

- Project: Western Canadian Sedimentary Basin
- Commodity: oil equivalent
- Region: canada\_ab
- Reported Region: Southern Alberta
- Ticker: WCSB

#### Resource scope

- Estimate type: reserve
- Reporting standards: ni\_43\_101
- QP Signed: Yes
- Qualified person names: Trimble Engineering Associates Ltd.
- Resource group id: resource:05020166d4103f91371a

#### Resource Data

- Category: probable
- Contained Metal: 3085.8
- Contained Unit: mboe

#### Prior Estimate

- Resource Date: 2025-12-31
- Prior Contained Metal: 966.7

#### Location

- Loc. Confidence: inferred

#### Review

- Needs Review: No
- Historical: No

#### Dates

- Event date: 2026-05-01T00:00:00.000Z

Reasoning: The 14% increase in total proved plus probable reserves \(MBOE\) is a positive indicator of overall reserve growth and future potential.

- Positive factor: Significant increase in total proved plus probable reserves \(14%\)

- Positive factor: Demonstrates overall growth in the company's reserve base

Evidence · table

> 3,085.8

Context: Total Proved plus Probable

#### 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

**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: 3085.8 against 966.7 previously

**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.
