McEwen Inc. — Proxy Solicitation & Information Statement 2022

May 3, 2022

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Your vote matters – here’s how to vote!

You may vote online or by phone instead of mailing this card.

Online

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Go to If no electronic voting, www.envisionreports.com/MUX or delete QR code and control # scan the QR code — login details areΔ ≈ located in the shaded bar below.

Phone

Call toll free 1-800-652-VOTE (8683) within the USA, US territories and Canada

Using a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas.

Save paper, time and money! Sign up for electronic delivery at www.envisionreports.com/MUX

Annual Meeting Proxy Card

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• IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE. �

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Proposals — T he Board of Directors recommend a vote HE BOARD OF DIRECTORS RECOMMENDS THATFOR THE SHAREHOLDERS Vall the nominees listed, OTE FOR“FOR” THEProposals X – X and for every ELECTION OF EACH OF THE NX YEARS OMINEESon Proposal X.
A
FOR DIRECTOR, AND “FOR” PROPOSALS 2 and 4 AND “3 YEARS” ON PROPOSAL 3.
1. ELECTION OF DIRECTORS: +
01 - Robert R. McEwen 02 - Allen V. Ambrose 03 - Richard W. Brissenden 04 - Robin E. Dunbar
05 - Donald R.M. Quick 06 - Merri Sanchez 07 - William M. Shaver 08 - Ian Ball
Mark here to vote FOR all nominees Mark here to WITHHOLD vote from all nominees
01 02 03 04 05 06 07 08
For All EXCEPT - To withhold a vote for one or more nominees, mark the
box to the left and the corresponding numbered box(es) to the right.
For Against Abstain 1 Year 2 Years 3 Years Abstain
2. To approve on an advisory (non-binding) basis the 3. To approve on an advisory (non-binding) basis the
compensation of the Company’s named executive officers. frequency upon which shareholders of the Company
will be entitled to vote on the compensation of the
named executive officers.
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1. To ratify the appointment of Ernst & Young LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2022.

2. To transact such other business as may properly come before the meeting.

B Authorized Signatures — This section must be completed for your vote to count. Please date and sign below.

Please sign exactly as your name appears on this card. When shares are held by joint tenants, both should sign. If signing as attorney, guardian, executor, administrator or trustee, please give full title as such. If a corporation, please sign in the corporate name by the president or other authorized officer. If a partnership, please sign in the partnership name by an authorized person. Date (mm/dd/yyyy) — Please print date below. Signature 1 — Please keep signature within the box. Signature 2 — Please keep signature within the box.

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The 2022 Annual Meeting of Shareholders of McEwen Mining Inc. will be held on Thursday, June 30, 2022 at 11:00 a.m. ET, virtually via the internet at www.meetnow.global/MJXJLV6.

To access the virtual meeting, you must have the information that is printed in the shaded bar located on the reverse side of this form.

Small steps make an impact. Help the environment by consenting to receive electronic delivery, sign up at www.envisionreports.com/MUX

• IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE. �

Proxy — McEwen Mining Inc.

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned, having duly received the Notice of Annual Meeting and the proxy statement dated April 28, 2022, hereby revokes any and all proxies previously granted and appoints Robert R. McEwen and Carmen L. Diges or either of them, as proxies (each with the power to act alone and with the power of substitution and revocation) to represent the undersigned and to vote, as designated herein, all shares of common stock of McEwen Mining Inc. held of record by the undersigned on April 28, 2022, at the Annual Meeting of Shareholders to be held on June 30, 2022 at 11:00 a.m. Eastern Time virtually at www.meetnow.global/MJXJLV6, and at any adjournment thereof.

This proxy, when properly executed, will be voted in the manner directed on the proxy by the undersigned shareholder. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED FOR THE LISTED DIRECTORS, FOR THE APPROVAL OF COMPENSATION OF THE NAMED EXECUTIVE OFFICERS, TO HOLD THE ADVISORY VOTE ON EXECUTIVE COMPENSATION EVERY THREE YEARS AND FOR THE RATIFICATION OF ERNST & YOUNG LLP AS THE COMPANY’S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE YEAR ENDING DECEMBER 31, 2022.

PLEASE MARK, SIGN, DATE AND RETURN THIS PROXY CARD PROMPTLY USING THE ENCLOSED RETURN ENVELOPE OR IF YOU ARE ELIGIBLE FOR AND PREFER INTERNET OR TELEPHONE VOTING, PLEASE RETURN YOUR PROXY BY FOLLOWING THE INSTRUCTIONS ON THE REVERSE SIDE OF THIS CARD.

(Items to be voted appear on reverse side)

C Non-Voting Items Change of Address — Please print new address below.

IF VOTING BY MAIL, YOU MUST COMPLETE SECTIONS A - C ON BOTH SIDES OF THIS CARD.