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Extractive Sector Transparency Measures Act - Annual Report  
Reporting Entity Name NexGen Energy Ltd.  
Reporting Year From  2024-01-01 To:  2024-12-31 Date submitted 2025-05-28  
Reporting Entity ESTMA Identification Number E186014 Original Submission
Amended Report		    
Other Subsidiaries Included
(optional field)		    
   
Not Consolidated    
   
Not Substituted    
   
Attestation by Reporting Entity    
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.  
   
   
Full Name of Director or Officer of Reporting Entity Benjamin Salter Date 2025-05-28  
Position Title Chief Financial Officer  


Extractive Sector Transparency Measures Act - Annual Report
Reporting Year From:  2024-01-01 To:  2024-12-31    
Reporting Entity Name NexGen Energy Ltd. Currency of the Report CAD
Reporting Entity ESTMA Identification Number E186014    
Subsidiary Reporting Entities (if necessary)      
Payments by Payee
Country  Payee Name1 Departments,
Agency, etc —
within Payee that
Received
Payments2		  Taxes Royalties  Fees Production
Entitlements		 Bonuses  Dividends Infrastructure
Improvement
Payments		 Total
Amount paid
to Payee		 Notes34
Canada Government of Canada Canadian Nuclear Safety Commission ("CNSC")     1,411,434.11          1,411,434  CNSC fees
Canada Government of Canada Receiver General for Canada - Health Canada      13,985.19          13,985  Dosimeter fees
Canada Government of Canada Receiver General for Canada - Innovation, Science and Economic Development Canada (Radio)     5,446.38          5,446  Radio Annual License
Canada Government of Canada Receiver General for Canada - Statistics Canada      830.01          830  Custom Census
Canada Government of Canada Receiver General for Canada - Natural Resources Canada     3,163.50         3,164   
Canada Government of British Columbia Ministry of Finance 541,076.37              541,076   
Canada Government of Saskatchewan Ministry of Environment     24,826.26          24,826  Payment for Sand and Gravel Lease
Canada Birch Narrows Dene Nation       449,304.29          449,304  Community Support and MBA Commitments
Canada Buffalo River Dene Nation       676,551.85          676,552  Community Support and IBA Commitments 
Canada Clearwater River Dene Nation       778,619.63          778,620  Community Support and IBA Commitments
Canada Ya'thi Néné Land and Resource Office       38,725.00          38,725  Engagement and Technical Support
Canada Métis Nation Saskatchewan (MN-S)       10,000.00         10,000  Community Support and IBA Commitments 
Canada Clearwater Clearlake Metis Economic Development Corporation       1,527,000.00          1,527,000  Community Support and IBA Commitments
Canada MLTC Program Services Inc       1,100.00          1,100 Community Events and Engagement Support
Canada Northern Village of Buffalo Narrows and Community       28,000.00          28,000 Community Events and Engagement Support 
Canada National Coalition of Chiefs       20,000.00          20,000 Event Supports
Canada Northern Hamlet of Turnor Lake and Community       53,500.00          53,500  Community Events and Engagement Support 
Canada ACFN Dene Lands & Resource Management Co       8,702.99          8,703  Community Events and Engagement Support
Canada Northern Village of La Loche and Community       353,207.47          353,207  Community Events and Engagement Support 
                       
                       
                       
                       
 Additional Notes: As required by Canada's Extractive Transparency Measures Act ("ESTMA"), NexGen Energy Ltd. has reported to the Canadian government payments made to governments in Canada and the United States. These payments include fees paid during a year by NexGen Energy Ltd. to various levels of government related to commercial development. Under ESTMA commercial development captures the exploration and extraction of minerals.

Extractive Sector Transparency Measures Act - Annual Report
Reporting Year From:  2024-01-01 To:  2024-12-31    
Reporting Entity Name NexGen Energy Ltd Currency of the Report CAD
Reporting Entity ESTMA Identification Number E186014    
Subsidiary Reporting Entities (if necessary)      
Payments by Project
Country Project Name1  Taxes Royalties  Fees  Production Entitlements  Bonuses  Dividends Infrastructure
Improvement Payments		 Total Amount paid
by Project 		Notes23
Canada Rook I 541,076    5,404,397          5,945,473   
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
                     
 Additional Notes3: As required by Canada's Extractive Transparency Measures Act ("ESTMA"), NexGen Energy Ltd. has reported to the Canadian government payments made to governments in Canada and the United States. These payments include fees paid during a year by NexGen Energy Ltd. to various levels of government related to commercial development. Under ESTMA commercial development captures the exploration and extraction of minerals.