Southern Copper director plans $87K stock sale

Director Luis Miguel Palomino Bonilla plans to sell 400 Southern Copper shares, worth about $87,000, on or after Sept. 1, 2026.

Rhea-AI Filing Summary

SOUTHERN COPPER CORPORATION (SCCO) received a Form 144 notice relating to planned sales of its common stock by director Luis Miguel Palomino Bonilla. The notice covers 400 shares of Southern Copper common stock, with an aggregate market value of 87000, to be sold through Inteligo SAB on the NYSE on or after 09/01/2026.

The shares were originally received on 04/30/2024 under Southern Copper’s Directors Stock Award Plan as compensation for board service, described as an exempt transaction under Rule 16b-3(d). The filing also lists several prior sales of Southern Copper common stock during the preceding three months by Inteligo SAB on behalf of the same account, including transactions on 06/02/2026, 06/05/2026, 07/24/2026, 08/04/2026, and 08/05/2026.

Key Figures

Shares to be sold: 400 shares of common stock Aggregate market value of planned sale: 87000 Date shares were acquired: 04/30/2024 +3 more

6 metrics

Shares to be sold 400 shares of common stock Planned sale under Rule 144 through Inteligo SAB on or after 09/01/2026

Aggregate market value of planned sale 87000 Associated with the 400 shares covered by the Form 144 notice

Date shares were acquired 04/30/2024 Shares received under Southern Copper Corporation’s Directors Stock Award Plan

Prior sale on 06/02/2026 100 shares for 20000 One of several sales of Southern Copper common stock in the past three months

Prior sale on 07/24/2026 100 shares for 17900 Listed in the three-month sale history section

Prior sale on 08/05/2026 100 shares for 19830 Another example of recent sales via Inteligo SAB

Key Terms

Rule 144, Directors Stock Award Plan, Rule 16b-3(d), Attorney-in-Fact

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Directors Stock Award Plan financial

"Received pursuant to Issuer's Directors Stock Award Plan for services as a director"

Rule 16b-3(d) regulatory

"exempt transaction under Rule 16b-3(d)."

Rule 16b-3(d) is a narrow SEC safe-harbor that shields company insiders (officers, directors and large shareholders) from liability for short‑swing profits when their buys or sells of company stock are made under a pre-established, written plan or contract that removes the insider’s ability to time trades. For investors, this matters because it permits predictable, automated insider transactions — like scheduled sales for diversification or payroll withholding — without triggering forced disgorgement, so such planned trades are treated differently from opportunistic insider trading.

Attorney-in-Fact regulatory

"Signature | /s/ Andres Carlos Ferrero, Attorney-in-Fact"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

What does the Form 144 filing for SCCO disclose about planned stock sales?

The Form 144 states that a director’s account plans to sell 400 shares of Southern Copper Corporation common stock, with an aggregate market value of 87000, through Inteligo SAB on the NYSE on or after 09/01/2026 under Rule 144.

Who is the SCCO insider involved in this Form 144 filing?

The notice relates to sales for the account of Luis Miguel Palomino Bonilla, identified as a director of Southern Copper Corporation. The filing is signed by /s/ Andres Carlos Ferrero, Attorney-in-Fact on 09/01/2026.

How were the SCCO shares in this Form 144 originally acquired?

The 400 shares covered by the Form 144 were received on 04/30/2024 pursuant to Southern Copper’s Directors Stock Award Plan for services as a director, described as an exempt transaction under Rule 16b-3(d).

What recent SCCO stock sales are listed in the Form 144?

The filing lists several prior sales of Southern Copper common stock during the past three months by Inteligo SAB, including a sale of 100 shares for 20000 on 06/02/2026 and other sales on 06/05/2026, 07/24/2026, 08/04/2026, and 08/05/2026.

What trading venue is indicated for the SCCO shares in this Form 144?

The Form 144 identifies the market for the planned sale of Southern Copper Corporation common stock as the NYSE, with the securities information section showing trading on that exchange as of 09/01/2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/01/2026 - 07:04 PM Accepted by SEC EDGAR 09/01/2026 - 07:03 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001284489
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SOUTHERN COPPER CORPORATION
SEC File Number	001-14066
Address of Issuer	7310 NORTH 16TH ST SUITE 135 PHOENIX ARIZONA 85020
Phone	(602) 264-1375
Name of Person for Whose Account the Securities are To Be Sold	Luis Miguel Palomino Bonilla
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Inteligo SAB Av. Rivera Navarrete Nro. 50, piso 21 San Isidro Lima R5 15046	400	87000	834328506	09/01/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	04/30/2024	Received pursuant to Issuer's Directors Stock Award Plan for services as a director- exempt transaction under Rule 16b-3(d).	Southern Copper Corporation			400	04/30/2024	Securities acquired under the Directors Stock Award Plan of Southern Copper Corproation for services as a director.

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Inteligo SAB Av. Rivera Navarrete Nro. 501, piso 21 San Isidro Lima R5 15046	Common Stock	06/02/2026	100	20000
Inteligo SAB Av. Rivera Navarrete Nro. 501, piso 21 San Isidro Lima R5 15046	Common Stock	06/05/2026	4	724
Inteligo SAB Av. Rivera Navarrete Nro. 501, piso 21 San Isidro Lima R5 15046	Common Stock	07/24/2026	100	17900
Inteligo SAB Av. Rivera Navarrete Nro. 501, piso 21 San Isidro Lima R5 15046	Common Stock	08/04/2026	100	19500
Inteligo SAB Av. Rivera Navarrete Nro. 501, piso 21 San Isidro Lima R5 15046	Common Stock	08/05/2026	100	19830
Inteligo SAB Av. Rivera Navarrete Nro. 501, piso 21 San Isidro Lima R5 15046	Common Stock	08/05/2026	100	20000

144: Remarks and Signature

Remarks	Securities acquired pursuant to Directors' Stock Award Plan of Southern Copper Corporation.
Date of Notice	09/01/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Andres Carlos Ferrero, Attorney-in-Fact
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)