UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.     )
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McEwen Mining Inc.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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 The Sample Company 000004 + MC 12M345M678M90 MM ENDORSEMENT_LINE______________ SACKPACK_____________ MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 ADD 6 Online Go to www.envisionreports.com/MUX or scan the QR code — login details are located in the shaded bar below. Shareholder Meeting Notice1234 5678 9012 345 Important Notice Regarding the Availability of Proxy Materials for the McEwen Mining Inc. Shareholder Meeting to be Held on June 28, 2021 Under Securities and Exchange Commission rules, you are receiving this notice that the proxy materials for the annual shareholders’ meeting are available on the Internet. Follow the instructions below to view the materials and vote online or request a copy. The items to be voted on and location of the annual meeting are on the reverse side. Your vote is important! This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The proxy statement and annual report to shareholders are available at: www.envisionreports.com/MUX Easy Online Access — View your proxy materials and vote. Step 1:Go to www.envisionreports.com/MUX. Step 2:Click on Cast Your Vote or Request Materials. Step 3:Follow the instructions on the screen to log in. Step 4:Make your selections as instructed on each screen for your delivery preferences. Step 5:Vote your shares. When you go online, you can also help the environment by consenting to receive electronic delivery of future materials. Obtaining a Copy of the Proxy Materials – If you want to receive a copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. Please make your request as instructed on the reverse side on or before June 16, 2021 to facilitate timely delivery. MMMMMMMMM 03GAKB 2 N O T C O Y+

 Shareholder Meeting Notice The 2021 Annual Meeting of Shareholders of McEwen Mining, Inc. will be held on June 28, 2021 at 4:00 p.m. ET, virtually via the internet at www.meetingcenter.io/236635772. 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. The password for this meeting is — MUX2021. Proposals to be voted on at the meeting are listed below along with the Board of Directors’ recommendations. The Board of Directors recommends that you vote FOR the following proposals: Election of Directors: Nominees: – ROBERT R. MCEWEN – ALLEN V. AMBROSE – MICHELE L. ASHBY – RICHARD W. BRISSENDEN – ROBIN E. DUNBAR – GREGORY P. FAUQUIER – DONALD R.M. QUICK – MICHAEL L. STEIN To adopt an amendment to the Company’s Second Amended and Restated Articles of Incorporation to increase the number of shares of common stock authorized to be issued from 500,000,000 to 675,000,000. To adopt an amendment to the Company’s Amended and Restated Equity Incentive Plan to increase the number of shares authorized to be issued under the Plan from 17,500,000 to 30,000,000 and to extend the expiration date of the Plan to April 15, 2031. TO RATIFY THE APPOINTMENT OF ERNST & YOUNG LLP AS THE COMPANY’S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE YEAR ENDING DECEMBER 31, 2021. Other Business To transact such other business as may properly come before the meeting or any adjournment thereof. PLEASE NOTE – YOU CANNOT VOTE BY RETURNING THIS NOTICE. To vote your shares you must go online or request a paper copy of the proxy materials to receive a proxy card. If you wish to attend and vote at the meeting, please save this notice and use the control number to access the meeting. Here’s how to order a copy of the proxy materials and select delivery preferences: Current and future delivery requests can be submitted using the options below. If you request an email copy, you will receive an email with a link to the current meeting materials. PLEASE NOTE: You must use the number in the shaded bar on the reverse side when requesting a copy of the proxy materials. Internet – Go to www.envisionreports.com/MUX. Click Cast Your Vote or Request Materials. Phone – Call us free of charge at 1-866-641-4276. Email – Send an email to investorvote@computershare.com with “Proxy Materials McEwen Mining Inc.” in the subject line. Include your full name and address, plus the number located in the shaded bar on the reverse side, and state that you want a paper copy of the meeting materials. To facilitate timely delivery, all requests for a paper copy of proxy materials must be received by June 16, 2021.