NexGen Energy Ltd. — Proxy Solicitation & Information Statement 2022

May 19, 2022

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Need assistance?

Phone:

1300 850 505 (within Australia) +61 3 9415 4000 (outside Australia)

Online:

www.investorcentre.com/contact

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YOUR VOTE IS IMPORTANT

For your vote to be effective it must be received by 9:00am (Australian Western Standard Time) on Monday, 20 June 2022.

CDI Voting Instruction Form

How to Vote on Items of Business

Each CHESS Depositary Interest (CDI) is equivalent to one share of Company Common Stock, so that every 1 (one) CDI registered in your name at Monday, 9 May 2022 entitles you to one vote.

You can vote by completing, signing and returning your CDI Voting Instruction Form. This form gives your voting instructions to CHESS Depositary Nominees Pty Ltd, which will vote the underlying shares on your behalf. You need to return the form no later than the time and date shown above to give CHESS Depositary Nominees Pty Ltd enough time to tabulate all CHESS Depositary Interest votes and to vote on the underlying shares.

Lodge your Form:

Online:

Lodge your vote online at www.investorvote.com.au using your secure access information or use your mobile device to scan the personalised QR code.

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Your secure access information is

SIGNING INSTRUCTIONS FOR POSTAL FORMS

Individual: Where the holding is in one name, the securityholder must sign.

Joint Holding: Where the holding is in more than one name, all of the securityholders should sign.

Power of Attorney: If you have not already lodged the Power of Attorney with the Australian registry, please attach a certified photocopy of the Power of Attorney to this form when you return it.

Companies: Only duly authorised officer/s can sign on behalf of a company. Please sign in the boxes provided, which state the office held by the signatory, ie Sole Director, Sole Company Secretary or Director and Company Secretary. Delete titles as applicable.

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Control Number: 999999 SRN/HIN: I9999999999 PIN: 99999

For Intermediary Online subscribers (custodians) go to www.intermediaryonline.com

By Mail:

Computershare Investor Services Pty Limited GPO Box 242 Melbourne VIC 3001 Australia

By Fax:

1800 783 447 within Australia or +61 3 9473 2555 outside Australia

PLEASE NOTE: For security reasons it is important that you keep your SRN/HIN confidential.

You may elect to receive meeting-related documents, or request a particular one, in electronic or physical form and may elect not to receive annual reports. To do so, contact Computershare.

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Change of address. If incorrect, mark this box and make the correction in the space to the left. Securityholders sponsored by a broker (reference number commences with ‘ X ’) should advise your broker of any changes. I 9999999999

CDI Voting Instruction Form

Please mark to indicate your directions

Step 1 CHESS Depositary Nominees Pty Ltd will vote as directed

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Voting Instructions to CHESS Depositary Nominees Pty Ltd

I/We being a holder of CHESS Depositary Interests of NexGen Energy (Canada) Ltd hereby direct CHESS Depositary Nominees Pty Ltd to vote the shares underlying my/our holding at the Annual General and Special Meeting of shareholders of the Company to be held at NexGen Office, Suite 3150, 1021 West Hastings Street, Vancouver on June 23, 2022 at 2:00 pm (Pacific Time), and at any adjournment or postponement of that meeting.

By execution of this CDI Voting Form the undersigned hereby authorises CHESS Depositary Nominees Pty Ltd to appoint such proxies or their substitutes to vote in their discretion on such business as may properly come before the meeting.

PLEASE NOTE: If you mark the Abstain box for an item, you are directing CHESS Depositary Nominees Pty Ltd or their appointed proxy not to vote on your behalf on a show of hands or a poll and your votes will not be counted in computing the required majority.

Items of Business

Step 2

1.

Number of Directors

1.	Number of Directors
										For	Against
To	set the number of Directors	at nine (9).
2.	Election of Directors
		For	Withhold			For	Withhold			For	Withhold
01.	Leigh Curyer			02.	Christopher McFadden			03.	Richard Patricio
04.	Trevor Thiele			05.	Warren Gilman			06.	Sybil Veenman
07.	Karri Howlett			08.	Brad Wall			09.	Don Roberts

3. Appointment of Auditors

For Withhold

Appointment of KPMG LLP as independent auditors of the Company for the ensuing year and authorizing the Directors to fix their remuneration.

4. Re-Approval of the Stock Option Plan

For Against

Approve the continuation of the Company's current Stock Option Plan.

Step 3 Signature of Securityholder(s)

This section must be completed.

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Individual or Securityholder 1 Securityholder 2 Securityholder 3
/ /
Sole Director & Sole Company Secretary Director Director/Company Secretary Date
Update your communication details (Optional) By providing your email address, you consent to receive future Notice
Mobile Number Email Address of Meeting & Proxy communications electronically
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