SOUTHERN COPPER CORP/

This proxy statement is furnished as part of the solicitation by the Board of Directors (the “Board of Directors” or “Board”) of Southern Copper Corporation (“SCC,” “us,” “our,” or the “Company”), 7310 North 16th Street, Suite 135, Phoenix, AZ 85020, USA; Avenida Caminos del Inca No. 171, Chacarilla del Estanque, Santiago de Surco, C.P. 15038, Peru; and Edificio Parque Reforma, Campos Eliseos No. 400, 12 th Floor, Col. Lomas de Chapultepec, Delegacion Miguel Hidalgo, Mexico City, C.P. 11000 Mexico, of the proxies of all holders of SCC’s common stock (the “Common Stockholders” or “you”) to vote at the Annual Meeting to be held on May 29, 2026 (the “Annual Meeting”), and at any adjournment thereof. The Annual Meeting will be conducted exclusively by webcast. No physical meeting will be held. On or about April 17, 2026, we began mailing a Notice of Internet Availability of Proxy Materials (the “Notice”) to shareholders of record as of April 2, 2026 (the “Record Date”), and we posted our proxy materials on the website www.proxyvote.com.

Your vote is important. Whether or not you plan to attend the virtual Annual Meeting, please submit your proxy and voting instructions online or complete, sign, date and return a proxy card as soon as possible. We encourage stockholders to vote and submit their proxies in advance of the meeting, either via the internet or by mail to prevent processing delays. Your cooperation is appreciated.

As more fully described in the Notice, shareholders may choose to access our proxy materials at www.proxyvote.com or may request a printed set of our proxy materials on or before May 15, 2026. In addition, the Notice and website provide information regarding how you may request to receive proxy materials on an ongoing basis, in print form by mail, or electronically by email. Those who previously requested printed proxy materials or electronic materials on an ongoing basis will receive those materials as requested.

You are entitled to attend the virtual Annual Meeting only if you were a stockholder of the Company as of the close of business on the Record Date, or if you hold a valid proxy for the meeting. To attend the annual meeting, cast your vote, and submit questions, please visit www.virtualshareholdermeeting.com/SCCO2026 and enter your 16-digit control number to access the meeting. You may submit a question in advance of the meeting at www.proxyvote.com after logging in with the control number found next to the label for postal mail recipients or within the body of the email sending you the Proxy Statement. Live questions may be submitted online beginning shortly before the start of the Annual Meeting through www.virtualshareholdermeeting.com/SCCO2026.

If you are not a stockholder of record but own shares through an intermediary, such as a bank or broker, you may need to provide proof of ownership. This could include your most recent account statement dated as of the Record Date, a copy of the voting instruction form provided by your broker, bank, trustee, or nominee, or other similar evidence of ownership. Failure to comply with these requirements will result in denial of access to the virtual Annual Meeting. We encourage you to access the meeting prior to the start time to leave ample time to check in. The virtual meeting will begin promptly at 9:00 A.M. Mexico City time.

Any proxy in the enclosed form given pursuant to this solicitation and received in time for the Annual Meeting will be voted with respect to all shares represented by it and in accordance with the instructions, if any, provided in such proxy. If we receive a signed proxy with no voting instructions, such shares will be voted for the proposal to elect directors, for the proposal to ratify the selection by the Audit Committee of Galaz, Yamazaki, Ruiz Urquiza S.C., a member firm of Deloitte Touche Tohmatsu Limited (“DTT”), as our independent accountants for the calendar year 2026, and for the approval of our executive compensation as described in this proxy statement. Any proxy may be revoked at any time prior to its exercise thereof (i) by sending written notice to our Secretary, (ii) submitting a written ballot at the virtual meeting, or (iii) delivering a proxy card bearing a later date. If your shares are held in street name, you must contact your broker to revoke your proxy.

Our outstanding shares consist of common stock, par value $0.01 per share (the “Common Stock”). At the close of business on the Record Date, we had 826,065,041 shares of Common Stock outstanding and entitled to vote at our Annual Meeting.

Unless stated otherwise, references herein to “dollars” or “$” are to U.S. dollars; references to “S/” are to Peruvian soles; and references to “peso”, “pesos”, or “Ps.” are to Mexican pesos.