Company: SCCO
Filing Date: 2025-04-16
Form Type: DEFA14A
Source: 0001558370-25-004911
Chunk: 0

Company: SOUTHERN COPPER CORP/
Filing Date: 2025-04-16
Form: DEFA14A
Chunk 0
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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 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box:

| ☐ | Preliminary Proxy Statement |

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

| ☐ | Definitive Proxy Statement |

| ☒ | Definitive Additional Materials |

| ☐ | Soliciting Material under § 240.14a-12 |

Southern Copper Corporation (Name of Registrant as Specified in Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check all boxes that apply):

| ☒ | No fee required. |

| ☐ | Fee paid previously with preliminary materials. |

| ☐ | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

Supplement to Proxy Statement For the Annual Meeting of Stockholders to be Held May 23, 2025 This supplement (the “Supplement”) amends and supplements the definitive proxy statement on Schedule 14A (the “Proxy Statement”) filed by Southern Copper Corporation (the “Company”) with the Securities and Exchange Commission on April 11, 2025 in connection with the Company’s annual meeting of stockholders (the “Annual Meeting”), to be held virtually via live webcast atwww.virtualshareholdermeeting.com/SCCO2025 at 9:00 a. m. Mexico City Time on Friday, May 23, 2025. The purpose of this Supplement is to clarify certain statements and correct certain inadvertent errors in the Proxy Statement regarding voting standard information and the effect of broker non-votes and abstentions on certain proposals. Other than these clarifications and corrections, the Proxy Statement remains unchanged, and this Supplement does not otherwise amend, supplement, or affect the Proxy Statement. From and after the date of this Supplement, any references to the “Proxy Statement” are to the Proxy Statement as supplemented by this Supplement. This Supplement should be read in conjunction with the Proxy Statement and the other proxy materials previously made available to stockholders in connection with the Annual Meeting. If you have already voted your shares, you do not