5N Plus Inc. — Proxy Solicitation & Information Statement 2026

Mar 31, 2026

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Notice of Availability of Proxy Materials for 5N PLUS INC. Annual General Meeting

Meeting Date and Location:

When: May 7, 2026
10:00 am (Eastern Time)

Where: https://meetnow.global/MYJXF5P In person
venue: Le Centre Sheraton Montreal, 1201
René-Lévesque Blvd. West. Montréal. Quebec

You are receiving this notice to advise that the proxy materials for the above noted securityholders' meeting are available on the Internet. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We remind you to access and review all of the important information contained in the information circular and other proxy materials before voting.

The information circular and other relevant materials are available at:

www.envisionreports.com/5NPlus2026

OR

www.sedarplus.ca

How to Obtain Paper Copies of the Proxy Materials

Securityholders may request to receive paper copies of the current meeting materials by mail at no cost. Requests for paper copies may be made using your Control Number as it appears on your enclosed Voting Instruction Form. To ensure you receive the materials in advance of the voting deadline and meeting date, all requests must be received no later than April 27, 2026. If you do request the current materials, please note that another Voting Instruction Form will not be sent; please retain your current one for voting purposes.

Request materials by calling Toll Free, within North America - 1-877-907-7643 or direct, from Outside of North America - 1-303-562-9305 and entering your control number as indicated on your Voting Instruction Form.

To obtain paper copies of the materials after the meeting date, please contact 514-856-0644, email: invest@5nplus.com

Broker
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Securityholder Meeting Notice

The resolutions to be voted on at the meeting are listed below along with the Sections within the

Voting

PLEASE NOTE - YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your securities you must vote using the methods reflected on your enclosed Voting Instruction Form. Your Voting Instruction Form must be received by 5:00 pm, Eastern Time on May 5, 2026.

PLEASE VIEW THE INFORMATION CIRCULAR PRIOR TO VOTING

Annual Financial statement delivery
- No Annual Report (or Annual Financial Statements) is (are) included in this mailing