Canaccord Genuity Group Inc. — Proxy Solicitation & Information Statement 2021

Jun 25, 2021

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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• ¨ Preliminary Proxy Statement

• ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

• ¨ Definitive Proxy Statement

• x Definitive Additional Materials

• ¨ Soliciting Material under §240.14a-12

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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• x No fee required. ¨ Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

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MCEWEN MINING REMINDER OF THE ANNUAL MEETING OF SHAREHOLDERS

Tune in and Learn About Our Progress

TORONTO, June 22, 2021 - McEwen Mining Inc. (NYSE: MUX) (TSX: MUX) reminds investors that its annual meeting of shareholders will be held virtually at:

www.meetingcenter.io/236635772

on June 28, 2021

at 4:00 p.m. Eastern Time.

The formal part of the meeting will be followed by a company presentation by management providing an update on our operations, project developments and expansion plans, and by a question-and-answer session.

The event will be archived and become available on our company’s website at

https://www.mcewenmining.com/media.

ABOUT MCEWEN MINING

McEwen Mining is in the midst of a turnaround. It is a diversified gold and silver producer and explorer focused in the Americas, with operating mines in Nevada, Canada, Mexico and Argentina. It also owns a large copper deposit in Argentina.

CONTACT INFORMATION:

Investor Relations: Website: www.mcewenmining.com (866)-441-0690 Toll Free (647)-258-0395 Facebook: facebook.com/mcewenmining Facebook: facebook.com/mcewenrob Mihaela Iancu ext. 320 Twitter: twitter.com/mcewenmining info@mcewenmining.com Twitter: twitter.com/robmcewenmux Instagram: instagram.com/mcewenmining

150 King Street West Suite 2800, P.O. Box 24 Toronto, ON, Canada M5H 1J9