Tombill Mines Limited — Proxy Solicitation & Information Statement 2022

Apr 28, 2022

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Computershare Trust Company of Canada

510 Burrard Street, 3[rd] Floor Vancouver, British Columbia V6C 3B9 Telephone: (604) 661-9400 Facsimile: (604) 661-9403 www.computershare.com

April 27, 2022

To: All Applicable Commissions & Exchanges Dear Sirs/Mesdames:

Re: Tombill Mines Limited (“Company”)

We confirm that the following material was sent by non pre-paid mail on April 27, 2022 to the registered shareholders of Common shares of the subject Company:

• A. Notice of Annual and Special Meeting/Management Information Circular B. Proxy

• C. Supplemental Mailing List Return Card

• D. Return Envelope

We further confirm that copies of the above mentioned material were sent by courier to each intermediary holding shares of the Company who responded to the search procedures pursuant to Canadian Securities Administrators’ National Instrument 54-101 regarding communication with Beneficial Owners of Securities of a Reporting issuer.

Yours truly,

COMPUTERSHARE TRUST COMPANY OF CANADA

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Marissa Beintema Relationship Manager Emerging Issuer Solutions Direct line: (604) 661-9408