# EDGAR Filing Document

**Accession Number:** 0001698535
**File Stem:** 0001062993-26-001426
**Filing Date:** 2026-3
**Character Count:** 8297
**Document Hash:** 2005143b9b29446f2bc5187c796f382b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001062993-26-001426.hdr.sgml**: 20260313

**ACCESSION NUMBER**: 0001062993-26-001426

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20260306

**FILED AS OF DATE**: 20260313

**DATE AS OF CHANGE**: 20260313

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NexGen Energy Ltd.
- **CENTRAL INDEX KEY:** 0001698535
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS METAL ORES [1090]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 840123707
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38072
- **FILM NUMBER:** 26753558

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 1021 WEST HASTINGS STREET
- **CITY:** VANCOUVER
- **PROVINCE COUNTRY:** A1
- **ZIP:** V6E 0C3
- **BUSINESS PHONE:** (604) 428-4112

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 1021 WEST HASTINGS STREET
- **CITY:** VANCOUVER
- **PROVINCE COUNTRY:** A1
- **ZIP:** V6E 0C3

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**UNITED STATES**<br>**SECURITIES AND EXCHANGE COMMISSION**<br>Washington, D.C. 20549

**FORM 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 <br>UNDER THE SECURITIES EXCHANGE ACT OF 1934**

For the month of <u>**March 2026**</u>

Commission File Number: <u>**001-38072**</u>

**<u>NexGen Energy Ltd.</u>**<br>(Translation of registrant's name into English)

**Suite 3150 - 1021 West Hastings Street,<u><br>Vancouver, BC, V6E 0C3</u>**<br>(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☐ Form 40-F ☒

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**<u>INCORPORATION BY REFERENCE</u>**

Exhibit 99.1 to this Report on Form 6-K is hereby incorporated by reference as Exhibits to the Registration Statement on Form F-10 of NexGen Energy Ltd. (File No. 333.266575).

**<u>SUBMITTED HEREWITH</u>**

<u>Exhibits</u>

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| | |
|:---|:---|
| **Exhibit** | **Description** |
| [99.1](exhibit99-1.htm) | [Notice of Change of Auditor](exhibit99-1.htm) |

---

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**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 undersigned, thereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **NEXGEN ENERGY LTD.** | **NEXGEN ENERGY LTD.** |
|  | (Registrant) | (Registrant) |
| Date: March 13, 2026 | By: | */s/ Benjamin Salter* |
|  |  | Benjamin Salter |
|  | Title: | Chief Financial Officer |

---

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## Exhibit 99.1

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**NOTICE OF CHANGE OF AUDITOR**

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| | |
|:---|:---|
| TO: | KPMG LLP |
| AND TO: | PricewaterhouseCoopers LLP |
| AND TO: | British Columbia Securities Commission |
|  | Alberta Securities Commission |
|  | Autorité des marchés financiers |
|  | Financial and Consumer Affairs Authority of Saskatchewan |
|  | Financial and Consumer Services Commission (New Brunswick) |
|  | Financial and Consumer Services Division (Prince Edward Island) |
|  | Manitoba Securities Commission |
|  | Nova Scotia Securities Commission |
|  | Office of the Superintendent of Securities Service Newfoundland and Labrador |
|  | Office of the Superintendent of Securities, Nunavut |
|  | Office of the Superintendent of Securities, Northwest Territories |
|  | Office of the Superintendent of Securities, Yukon |
|  | Ontario Securities Commission |

---

The audit committee (the "**Audit Committee**") of NexGen Energy Ltd. (the "**Company**") has conducted a comprehensive request for proposal process with respect to the Company's external auditor engagement, which process was initiated by the Audit Committee in accordance with its mandate and with a view to best corporate governance practices, including consideration of auditor tenure.

Following completion of that process, and upon the recommendation of the Audit Committee, the board of directors of the Company (the "**Board**") requested that KPMG LLP (the "**Former Auditor**") tender its resignation as auditor of the Company and approved the appointment of PricewaterhouseCoopers LLP (the "**Successor Auditor**") as auditor of the Company.

In accordance with Section 4.11 of National Instrument 51-102 - *Continuous Disclosure Obligations* ("**NI 51-102**"), the Company reports as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. **Date of termination and appointment** - The resignation of the Former Auditor and the appointment of the Successor Auditor each became effective on March 5, 2026, being the date on which the Board requested the resignation of the Former Auditor and appointed the Successor Auditor.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. **Reason for change of auditor** - The change of auditor occurred at the request of the Company following completion of a competitive request for proposal process conducted by the Audit Committee.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. **Former Auditor's reports** - The Former Auditor's reports on the audited consolidated financial statements of the Company for the two most recently completed financial years ended December 31, 2025 and December 31, 2024 did not contain a modified opinion.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. **Reportable events** - There are no "reportable events" (as such term is defined in NI 51- 102) between the Company and the Former Auditor.

DATED this 6<sup>th</sup> day of March, 2026.

---

| | |
|:---|:---|
| **NEXGEN ENERGY LTD.** | **NEXGEN ENERGY LTD.** |
| By: |  |
|  | ***"Benjamin Salter"*** |
|  | Benjamin Salter |
|  | Chief Financial Officer |

---

------

---

| | |
|:---|:---|
| To: | British Columbia Securities Commission |
|  | Alberta Securities Commission |
|  | Autorité des marchés financiers |
|  | Financial and Consumer Affairs Authority of Saskatchewan |
|  | Financial and Consumer Services Commission (New Brunswick) |
|  | Financial and Consumer Services Division (Prince Edward Island) |
|  | Manitoba Securities Commission |
|  | Nova Scotia Securities Commission |
|  | Office of the Superintendent of Securities Service Newfoundland and Labrador |
|  | Office of the Superintendent of Securities, Nunavut |
|  | Office of the Superintendent of Securities, Northwest Territories |
|  | Office of the Superintendent of Securities, Yukon |
|  | Ontario Securities Commission |

---

March 6, 2026

Dear Sir/Madam

**Re: Notice of Change of Auditors of NexGen Energy Ltd.**

We have read the Notice of NexGen Energy Ltd. dated March 6, 2026 and are in agreement with the statements contained in such Notice.

Yours very truly,

![](exhibit99-1x3x1.jpg)

Chartered Professional Accountants

March 6, 2026

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![](exhibit99-1xu001.jpg)

March 10, 2026

To:<br>British Columbia Securities Commission<br>Alberta Securities Commission<br>Autorité des marchés financiers<br>Financial and Consumer Affairs Authority of Saskatchewan<br>Financial and Consumer Services Commission (New Brunswick)<br>Financial and Consumer Services Division (Prince Edward Island)<br>Manitoba Securities Commission<br>Nova Scotia Securities Commission<br>Office of the Superintendent of Securities Service Newfoundland and Labrador<br>Office of the Superintendent of Securities, Nunavut<br>Office of the Superintendent of Securities, Northwest Territories<br>Office of the Superintendent of Securities, Yukon<br>Ontario Securities Commission

We have read the statements made by NexGen Energy Ltd. in the attached copy of change of auditor notice dated March 6, 2026, which we understand will be filed pursuant to Section 4.11 of National Instrument 51-102.

We agree with the statements concerning PricewaterhouseCoopers LLP in the change of auditor notice dated March 6, 2026.

Yours very truly,

**/s/PricewaterhouseCoopers LLP**

Chartered Professional Accountants

PricewaterhouseCoopers LLP

PwC Place, 250 Howe Street, Suite 1400

Vancouver, British Columbia, Canada V6C 3S7

T.: +1 604 806 7000, F.: +1 604 806 7806

Fax to mail: ca_vancouver_main_fax@pwc.com

**www.pwc.com/ca**

"PwC" refers to PricewaterhouseCoopers LLP, an Ontario limited liability partnership.

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