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EX-99.1

2 scco-20260428xex99d1.htm

EX-99.1

Exhibit 99.1

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Investor Relations:

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Raul Jacob

Victor Pedraglio

Bertin Galarreta

+(602) 264-1375

southerncopper@southernperu.com.pe

www.southerncoppercorp.com

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April 28, 2026

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Southern Copper Corporation

(NYSE and BVL: SCCO)

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●1Q26 net sales were $4,251.4 million, which represented growth of 36.2% with regard to 1Q25's figure. Expansion was primarily fueled by an increase in sales volumes for silver (+11.6%) and zinc (+16.4%), and by an uptick in metal prices for all our products.

●1Q26 Net income was $1,576.9 million, which represented a new Company record and an improvement of 66.7% compared to the $945.9 million registered in 1Q25. The net income margin in 1Q26 was 37.1%, versus 30.3% in 1Q25. The 1Q26 Net Income increased 20.6% versus the $1,307.9 million registered in 4Q25.

●1Q26 adjusted EBITDA was $2,712.8 million, which represented an increase of 55.4% over the $1,745.5 million registered in 1Q25. The adjusted EBITDA margin in 1Q26 was 63.8%, versus 55.9% in 1Q25.

●Cash flow from operating activities in 1Q26 was $1,694.5 million, which represented an increase of 135.0% versus the $721.4 million posted in 1Q25. This improvement was mainly attributable to strong cash generation at our operations, which was driven by higher sales and a $448.8 million decrease in operating assets and liabilities requirements.

●Copper production registered a decrease of 4.0% in 1Q26 compared to 1Q25. This outcome was primarily driven by lower production at our Peruvian operations (-9.8%), which fell due to lower ore grades and recoveries and in line with the annual plan. These results were primarily offset by an increase in production at our La Caridad (+5.5%) mine. The Company expects a recovery in ore grades by the end of 2026 and follows in the next years.

●By-product production: Mined silver production rose 11.1% in 1Q26 compared to 1Q25, driven primarily by growth in production at La Caridad (+22.1%), Buenavista (+20.7%) and IMMSA (+10.8%) mines. Mined zinc production increased 2.0% this quarter, mainly due to higher production at the IMMSA (+9.1%) operations. Molybdenum production decreased 2.2% in 1Q26, driven primarily by lower production at the Buenavista (-19.2%).

●1Q26 Operating cash cost per pound of copper, net of by-product revenue credits, was -$0.11 in 1Q26, which represented a decrease of 114.0% compared to the $0.77 reported in 1Q25. This reduction was mainly driven by higher by-product revenue credits (+87.4%), due to higher sales volumes for silver and zinc as well as better prices for silver, molybdenum and zinc.

●1Q26, we spent $441.9 million on capital investments, up 39.0% compared to 1Q25 and 4.6% versus the figure in 4Q25. Capital expenditure represented 28.3% of net income this quarter.

●Dividends: On April 23, 2026, the Board of Directors authorized a quarterly cash dividend of $1.00 per share of common stock and a stock dividend of 0.0100 shares of common stock per share of common stock, payable on May 29, 2026, to shareholders of record at the close of business on May 13, 2026.

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FIRST QUARTER 2026 RESULTS

SOUTHERN COPPER

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In lieu of fractional shares, cash will be distributed to each shareholder who would otherwise have been entitled to receive a fractional share, based on a share price of $187.45, which is the average of the high and low share price on April 23, 2026.

Mr. German Larrea, Chairman of the Board, commenting on the Company´s progress and current circumstances, said:

"╬ On April 7, 2026, Grupo Mexico lost one of the principals of its organization, Oscar Gonzalez Rocha, who served as Executive President, Chief Executive Officer of SCCO and member of the Board of Directors. Over a period spanning 50 years, Oscar worked tirelessly to further the Company’s objectives as he scaled the corporate ladder to CEO. From this position, he managed the company with intelligence, unwavering loyalty and commitment to meeting and exceeding targets. Oscar was one of the most influential leaders in the mining industry. We will miss him deeply.

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On April 23, 2026, the Company’s Board of Directors appointed Mr. Leonardo Contreras Lerdo de Tejada as Chief Executive Officer of SCCO. Over the past eight years, Mr. Contreras has held leadership roles within the Company, working closely with highly valued members of the management team and contributing with expertise in operations, human capital, and finance. He successfully led Asarco’s operations as CEO, where he delivered outstanding results prior to assuming leadership of one of Minera México’s business units. Mr. Contreras served as Commercial Director of AMC, moved up to CFO, and eventually became CEO in 2024. Mr. Contreras brings more than ten years of experience in private equity, investment banking, and entrepreneurship. He holds a Bachelor of Science in Industria

SOUTHERN COPPER CORPORATION_January 27, 2026 0001001838false00010018382026-01-272026-01-27 ​ ​

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): January 28, 2026 (January 27, 2026)

SOUTHERN COPPER CORPORATION

(Exact name of registrant as specified in its charter) ​

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Delaware ​ ​ ​ 1-14066 ​ ​ ​ 13-3849074

(State or Other Jurisdiction of Incorporation) ​ (Commission File Number) ​ (IRS Employer Identification Number)

​ 7310 N. 16th Street, Suite 135, Phoenix, AZ 85020 (Address of principal executive offices, including zip code) (602) 264-1375 (Registrant’s telephone number, including area code) Not Applicable (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): ​

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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​ ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

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​ ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

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​ ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

​ Securities registered pursuant to Section 12(b) of the Act: ​

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Title of each class: ​ ​ ​ Trading Symbol ​ ​ ​ Name of each exchange on which registered:

Common stock, par value $0.01 per share

SCCO

​ New York Stock Exchange Lima Stock Exchange

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ ​ ​ ​ ​

ITEM 2.02     Results of Operations and Financial Condition On January 27, 2026, Southern Copper Corporation (“SCC”) issued a press release announcing financial results for the fourth quarter and full year ended on December 31, 2025. In this press release, SCC reported that on January 22, 2026, the Board of Directors authorized a quarterly cash dividend of $1.00 per share of common stock and a stock dividend of 0.0085 shares of common stock per share of common stock payable on February 27, 2026, to shareholders of record at the close of business on February 10, 2026. In lieu of fractional shares, cash will be distributed to each shareholder who would otherwise have been entitled to receive a fractional share based on a share price of $179.93, which is the average of the high and low share price on January 22, 2026. A copy of this press release is attached hereto as Exhibit 99.1. The information in this report and the exhibit attached hereto are being furnished and shall not be deemed as “filed” for purposes of Section 18 of the Securities Act of 1934. Accordingly, this information will not be incorporated by reference into any registration statement or other document filed by Southern Copper Corporation pursuant to the Securities Act of 1933 or the Securities Exchange Act of 1934, except as expressly stated in such filing. ​ ITEM 9.01     Financial Statements and Exhibits (d) Exhibits:

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99.1 Press release of Southern Copper Corporation dated January 27, 2026, furnished pursuant to Item 2.02 of this Form 8- K.

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104.1 Cover Page Interactive Data File (embedded within the inline XBRL document)

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INDEX TO EXHIBITS

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Exhibits ​ ​ ​

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99.1 ​ Press release of Southern Copper Corporation dated January 27, 2026, furnished pursuant to Item 2.02 of this Form 8-K.

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104.1 ​ Cover Page Interactive Data File (embedded within the inline XBRL document)

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​

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SOUTHERN COPPER CORPORATION

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​ By: /s/ Andres Carlos Ferrero

​ Name: Andres Carlos Ferrero

​ Title: General Counsel

​ Date: January 28, 2026 ​

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