Aris Mining Corporation — Proxy Solicitation & Information Statement 2021

Apr 26, 2021

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Notice-and-Access

The Canadian securities regulators have adopted rules which permit the use of notice-and-access for proxy solicitation instead of the traditional physical delivery of material. This new process provides the option to post meeting related materials including management information circulars, as well as annual financial statements and management’s discussion and analysis on a website in addition to SEDAR. Under notice-and-access, meeting related materials will be available for viewing for up to 1 year from the date of posting and a paper copy of the material can be requested at any time during this period.

Gran Colombia Gold Corp. has elected to utilize notice-and-access and provide you with the following information: Meeting Date and Time: May 27, 2021 at 9:00 a.m. (EDT) Meeting Location: Virtual Meeting URL: https://web.lumiagm.com/205152606 Password: colombia2021

Meeting materials are available electronically at www.sedar.com and also on https://docs.tsxtrust.com/2045

If you wish to receive a paper copy of the Meeting materials or have questions about notice-and-access please call 1-866-6005869 or email TMXEInvestorServices@tmx.com. In order to receive a paper copy in time to vote before the meeting, your request should be received by May 17, 2021.

Please follow the instructions accompanying the Voting Instruction Form you receive with respect to returning it.

Disclosure regarding matters to be voted on may be found in the following Sections of the Information Circular.

1. Number of Directors 2. Election of Directors 3. Appointment of Auditor 4. Alteration Resolution 5. Share Issuance Resolution

You should review the Information Circular before voting.

www.tsxtrust.com VANCOUVER CALGARY TORONTO MONTRÉAL

(Detach and Retain top for your records)   Gran Colombia Gold Corp. Request for Financial Statements (“Corporation”) 2021 In accordance with National Instrument 51-102 – Continuous Disclosure Obligations, registered and beneficial security holders may elect annually to receive a copy of our annual financial statements and corresponding management discussion and analysis (“MD&A”). IF YOU WISH TO RECEIVE THESE DOCUMENTS BY MAIL, PLEASE Rather than receiving the financial statements by mail, you may choose to view these DETACH THIS PORTION AND RETURN THIS COMPLETED FORM TO : documents on the SEDAR website at www.sedar.com. TSX Trust Company I HEREBY CERTIFY that I am a registered and/or beneficial holder of the Corporation, and as such, 301 - 100 Adelaide Street West request that my name be placed on the Corporation’s Mailing List in respect to its annual and the Toronto ON M5H 4H1 corresponding MD&A for the current financial year. Or by fax to: 416-595-9593 Please send me:  Annual Financial Statements with MD&A FIRST NAME LAST NAME ADDRESS CITY PROVINCE/STATE POSTAL/ZIP CODE COUNTRY

IF YOU WISH TO RECEIVE THESE DOCUMENTS BY MAIL, PLEASE Rather than receiving the financial statements by mail, you may choose to view these DETACH THIS PORTION AND RETURN THIS COMPLETED FORM TO : documents on the SEDAR website at www.sedar.com. TSX Trust Company I HEREBY CERTIFY that I am a registered and/or beneficial holder of the Corporation, and as such, 301 - 100 Adelaide Street West request that my name be placed on the Corporation’s Mailing List in respect to its annual and the Toronto ON M5H 4H1 corresponding MD&A for the current financial year. Or by fax to: 416-595-9593 Please send me:  Annual Financial Statements with MD&A

Signature of Security holder DATE (MM/DD/YYYY)