# EDGAR Filing Document

**Accession Number:** 0001997377
**File Stem:** 0001104659-25-077552
**Filing Date:** 2025-8
**Character Count:** 62043
**Document Hash:** d7aeed1be0eb3060dcd4148178917037
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-077552.hdr.sgml**: 20250813

**ACCESSION NUMBER**: 0001104659-25-077552

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 17

**FILED AS OF DATE**: 20250813

**DATE AS OF CHANGE**: 20250813

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** IsoEnergy Ltd.
- **CENTRAL INDEX KEY:** 0001997377
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS METAL ORES [1090]
- **ORGANIZATION NAME:** International Corp Fin
- **EIN:** 000000000
- **STATE OF INCORPORATION:** A6
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42611
- **FILM NUMBER:** 251211646

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 217 QUEEN STREET WEST, SUITE 401
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5V 0R2
- **BUSINESS PHONE:** 1-833-572-2333

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 217 QUEEN STREET WEST, SUITE 401
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5V 0R2

------

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM SD**

**Specialized Disclosure Report**

---

| |
|:---|
| **IsoEnergy Ltd.** |
| (Exact name of registrant as specified in its charter) |

---

---

| | | |
|:---|:---|:---|
| **Ontario, Canada** | **001-42611** | **N/A** |
| (State or other jurisdiction of incorporation) | (Commission File Number) | (I.R.S. Employer Identification No.) |

---

---

| | |
|:---|:---|
| **217 Queen Street West, Suite 401, Toronto, Ontario, Canada** | **M5V 0R2** |
| (Address of principal executive offices) | (Zip Code) |

---

---

| |
|:---|
| **Graham du Preez, Chief Financial Officer**<br>**1-833-572-2333** |
| (Name and telephone number, including area code, of the person to contact in connection with this report.) |

---

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

☐ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, <u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u>. <br> ☒ Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended December 31, 2024.

------

#### INFORMATION TO BE INCLUDED IN THE REPORT

#### Section 1 – Conflict Minerals Disclosure

#### Item 1.01 Conflict Minerals Disclosure and Report
Not applicable.

#### Item 1.02 - Exhibit
Not applicable.

#### Section 2 – Resource Extraction Issuer Disclosure

#### Item 2.01 Resource Extraction Issuer Disclosure and Report
IsoEnergy Ltd. ("**IsoEnergy**") is subject to Canada's Extractive Sector Transparency Measures Act ("**ESTMA**"). IsoEnergy is relying on the alternative reporting provision of Item 2.01 and providing its ESTMA report for the year ended December 31, 2024 to satisfy the requirements of Item 2.01. IsoEnergy's ESTMA report is available in the Investors – Annual and Interim Reports section of IsoEnergy's website at www.isoenergy.ca or on the Government of Canada's website at https://natural-resources.canada.ca/minerals-mining/services-mining-industry/extractive-sector-transparency/links-estma-reports. The payment disclosure required by Form SD is included as Exhibit 2.01 to this Form SD.

#### Section 3 – Exhibits

#### Item 3.01 Exhibits
The following exhibit is filed as part of this report.

---

| | | |
|:---|:---|:---|
| **Exhibit<br>Number** |  | **Description** |
| 2.01 |  | [Extractive Sector Transparency Measures Act - Annual Report for the year ended December 31, 2024.](isou-20250813xex2d01.htm) |

---

------

<sup>(1)</sup> The references to IsoEnergy's website and the Government of Canada's website are provided for convenience only, and their contents are not incorporated by reference into this Form SD or the ESTMA Report nor deemed filed with the U.S. Securities and Exchange Commission.

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

---

| | | |
|:---|:---|:---|
|  | **ISOENERGY LTD.** | **ISOENERGY LTD.** |
| Date: August 13, 2025 | By: | /s/ Graham du Preez |
|  |  | Graham du Preez |
|  |  | Chief Financial Officer |

---

------

## Exhibit 2.01

?xml version='1.0' encoding='ASCII'? IsoEnergy Ltd._2024-12-31

**Exhibit 2.01**

UNCLASSIFIED - NON CLASSIFIÉ

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Reporting Entity Name** | IsoEnergy Ltd. | IsoEnergy Ltd. | IsoEnergy Ltd. | IsoEnergy Ltd. | IsoEnergy Ltd. | IsoEnergy Ltd. | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Reporting Year** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**From** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2024-01-01 | **To:** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2024-12-31 | **Date submitted** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2025-05-30 | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Reporting Entity ESTMA Identification Number** | <br>E747416 | <br>E747416 | &nbsp;&nbsp;&nbsp;&nbsp;![Graphic](isou-20250813xex2d01002.jpg) Original Submission<br>![Graphic](isou-20250813xex2d01003.jpg) Amended Report | &nbsp;&nbsp;&nbsp;&nbsp;![Graphic](isou-20250813xex2d01002.jpg) Original Submission<br>![Graphic](isou-20250813xex2d01003.jpg) Amended Report |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Other Subsidiaries Included**(optional field) |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
|  |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Not Consolidated** |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
|  |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
| <br>**Not Substituted** |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
|  |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Attestation by Reporting Entity** |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
| <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | <br>*In accordance with the requirements of the ESTMA, and in particular section 9 thereof, I attest I have reviewed the information contained in the ESTMA report for the entity(ies) listed above. Based on my knowledge, and having exercised reasonable diligence, the information in the ESTMA report is true, accurate and complete in all material respects for the purposes of the Act, for the reporting year listed above.* | ![Graphic](isou-20250813xex2d01001.jpg) |
|  |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
|  |  |  |  |  |  |  | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Full Name of Director or Officer of Reporting Entity** | **Graham du Preez** | **Graham du Preez** | **Graham du Preez** | **Graham du Preez** | <br>**Date** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>*2025-05-30* | ![Graphic](isou-20250813xex2d01001.jpg) |
| **Position Title** | **Chief Financial Officer** | **Chief Financial Officer** | **Chief Financial Officer** | **Chief Financial Officer** | <br>**Date** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>*2025-05-30* | ![Graphic](isou-20250813xex2d01001.jpg) |

---

UNCLASSIFIED - NON CLASSIFIÉ

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** |
| **Reporting Year** | **From:** | 2024-01-01 | **To:** | &nbsp;&nbsp;&nbsp;2024-12-31 |
| **Reporting Entity Name** |  |  | IsoEnergy Ltd. | **Currency of the Report**<br> CAD |
| **Reporting Entity** **ESTMA** **Identification Number** |  |  | E747416 |  |
| **Subsidiary ReportingEntities (if necessary)** |  |  |  |  |
| **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** | **Payments by Payee** |

---

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Country** | **Payee Name**<sup>1</sup> | **Departments, Agency, etc…within Payee that ReceivedPayments**<sup>2</sup> | **Taxes** | **Royalties** | **Fees** | **Production Entitlements** | **Bonuses** | **Dividends** | **InfrastructureImprovement Payments** | **Total Amount paid toPayee** | **Notes**<sup>34</sup> |
| United States of America | U.S. Federal Government | U.S. Department of the Interior - Bureau of Land Management | - | - | 351938 | - | - | - | - | **351938** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| United States of America | State of Utah | Utah Trust Lands Administration | - | 323739 | 9117 | - | - | - | - | **332856** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| Canada - Saskatchewan | Ya'Thi Néné Lands & Resources | Athabasca Community Trust STF | - | - | 313534 | - | - | - | - | **313534** |  |
| Australia | Queensland Government | Department of Natural Resources and Mines, Manufacturing, and Regional and Rural Development | - | - | 134266 | - | - | - | - | **134266** | Paid in AUD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 0.9035. |
| Australia | Queensland Government | Queensland Revenue Office | 132346 | - | - | - | - | - | - | **132346** | Paid in AUD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 0.9035. |

---

**Additional Notes:**<br>

UNCLASSIFIED - NON CLASSIFIÉ

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** | **Extractive Sector Transparency Measures Act - Annual Report** |
| **Reporting Year** | **From:** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2024-01-01 | **To:** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2024-12-31 |  |  |
| **Reporting Entity Name** | IsoEnergy Ltd. | IsoEnergy Ltd. | IsoEnergy Ltd. | IsoEnergy Ltd. | **Currency of the Report** | CAD |
| **Reporting Entity ESTMAIdentification Number** | E747416 | E747416 | E747416 | E747416 |  |  |
| **Subsidiary Reporting Entities (ifnecessary)** |  |  |  |  |  |  |
| **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** | **Payments by Project** |

---

---

| | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Country** | **Project Name**<sup>1</sup> | **Taxes** | **Royalties** | **Fees** | **Production Entitlements** | **Bonuses** | **Dividends** | **Infrastructure Improvement Payments** | **Total Amount paid by Project** | **Notes**<sup>23</sup> |
| United States of America | Tony M | - | 307017 | 122485 | - | - | - | - | **429502** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| United States of America | Sage Plain | - | 6327 | 45926 | - | - | - | - | **52253** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| United States of America | Daneros | - | 10395 | 85583 | - | - | - | - | **95978** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| United States of America | RIM | - | - | 7344 | - | - | - | - | **7344** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| United States of America | Henry Mountains | - | - | 99717 | - | - | - | - | **99717** | Paid in USD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 1.3698. |
| Canada - Saskatchewan | Saskatchewan exploration projects | - | - | 313534 | - | - | - | - | **313534** | Payments made in regards to collaboration for exploration at properties in Saskatchewan located in the jurisdictions of the Ya'Thi Néné Lands & Resources. |
| Australia | Ben Lomond | - | - | 134266 | - | - | - | - | **134266** | Paid in AUD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 0.9035. |
| Australia | Queensland exploration projects | 132346 | - | - | - | - | - | - | **132346** | Paid in AUD and translated to CAD at the exchange rate at the date of the individual payment. The average exchange rate in the reporting year was 0.9035. |

---

**Additional Notes**<sup>3</sup>**:**<br>

## Exhibit 2.01

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          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="isou_QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Represents the information pertaining to Queensland Government, Department of Natural Resources and Mines, Manufacturing, and Regional and Rural Development.</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="isou_QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Queensland Government, Department of Natural Resources and Mines, Manufacturing, and Regional and Rural Development [Member]</label>
          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="isou_QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Queensland Government, Department of Natural Resources and Mines, Manufacturing, and Regional and Rural Development</label>
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          <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="isou_QueenslandGovernmentQueenslandRevenueOfficeMember_lbl" xml:lang="en-US" xmlns="http://www.xbrl.org/2003/linkbase">Queensland Government, Queensland Revenue Office [Member]</label>
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        </link:labelLink>
        <link:definitionLink xlink:role="http://xbrl.sec.gov/rxp/role/GovernmentsOnly" xlink:type="extended" xlink:title="Government Only">
          <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/rxp/2025/rxp-2025.xsd#rxp_AllGovernmentsMember" xlink:label="rxp_AllGovernmentsMember" xlink:title="rxp_AllGovernmentsMember" />
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          <link:loc xlink:type="locator" xlink:href="#isou_StateOfUtahUtahTrustLandsAdministrationMember" xlink:label="isou_StateOfUtahUtahTrustLandsAdministrationMember" xlink:title="isou_StateOfUtahUtahTrustLandsAdministrationMember" />
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          <link:loc xlink:type="locator" xlink:href="#isou_YaThiNeneLandsResourcesAthabascaCommunityTrustSTFMember" xlink:label="isou_YaThiNeneLandsResourcesAthabascaCommunityTrustSTFMember" xlink:title="isou_YaThiNeneLandsResourcesAthabascaCommunityTrustSTFMember" />
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          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllGovernmentsMember" xlink:to="isou_QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllGovernmentsMember To isou_QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember" order="4" priority="0" />
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        <link:definitionLink xlink:role="http://xbrl.sec.gov/rxp/role/ProjectsOnly" xlink:type="extended" xlink:title="Projects Only">
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          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="isou_ProjectTonyMMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To isou_ProjectTonyMMember" order="1" priority="0" />
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          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="isou_ProjectDanerosMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To isou_ProjectDanerosMember" order="3" priority="0" />
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          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="isou_ProjectRIMMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To isou_ProjectRIMMember" order="4" priority="0" />
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          <link:loc xlink:type="locator" xlink:href="#isou_SaskatchewanExplorationProjectsMember" xlink:label="isou_SaskatchewanExplorationProjectsMember" xlink:title="isou_SaskatchewanExplorationProjectsMember" />
          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="isou_SaskatchewanExplorationProjectsMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To isou_SaskatchewanExplorationProjectsMember" order="6" priority="0" />
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          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="isou_ProjectBenLomondMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To isou_ProjectBenLomondMember" order="7" priority="0" />
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          <link:definitionArc xlink:type="arc" xlink:from="rxp_AllProjectsMember" xlink:to="isou_QueenslandExplorationProjectsMember" use="optional" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:title="definition:rxp_AllProjectsMember To isou_QueenslandExplorationProjectsMember" order="8" priority="0" />
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    </xsd:appinfo>
  </xsd:annotation>
  <xsd:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
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  <xsd:import namespace="http://xbrl.sec.gov/snj/2025" schemaLocation="https://xbrl.sec.gov/snj/2025/snj-2025.xsd" />
  <xsd:element name="U.S.FederalGovernmentU.S.DepartmentOfInteriorBureauOfLandManagementMember" id="isou_U.S.FederalGovernmentU.S.DepartmentOfInteriorBureauOfLandManagementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StateOfUtahUtahTrustLandsAdministrationMember" id="isou_StateOfUtahUtahTrustLandsAdministrationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="YaThiNeneLandsResourcesAthabascaCommunityTrustSTFMember" id="isou_YaThiNeneLandsResourcesAthabascaCommunityTrustSTFMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember" id="isou_QueenslandGovernmentDepartmentOfNaturalResourcesAndMinesManufacturingAndRegionalAndRuralDevelopmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="QueenslandGovernmentQueenslandRevenueOfficeMember" id="isou_QueenslandGovernmentQueenslandRevenueOfficeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProjectTonyMMember" id="isou_ProjectTonyMMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="ProjectRIMMember" id="isou_ProjectRIMMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="SaskatchewanExplorationProjectsMember" id="isou_SaskatchewanExplorationProjectsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProjectBenLomondMember" id="isou_ProjectBenLomondMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="QueenslandExplorationProjectsMember" id="isou_QueenslandExplorationProjectsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
</xsd:schema>
</XBRL>

```