Pampa Energía ends Los Nihuiles hydro concession

Pampa Energía S.A. reports the termination of the concession for the Los Nihuiles Hydroelectric System in Mendoza, Argentina.

Rhea-AI Filing Summary

Pampa Energía S.A. reports the termination of the concession for the Los Nihuiles Hydroelectric System in Mendoza, Argentina. The transition period under the Concession Agreement, as extended by Law No. 9,630, came to an end on July 31, 2026.

On that date, Hidroeléctrica Los Nihuiles S.A. (HINISA), as concessionaire, and the Province of Mendoza, as grantor represented by its Minister of Energy and Environment, executed a Handover Certificate that formalizes the delivery of the assets allocated to the concession.

Key Figures

Concession transition end date: July 31, 2026 Law extending concession transition: Law No. 9,630 Commission File Number: 001-34429

3 metrics

Concession transition end date July 31, 2026 End of transition period for Los Nihuiles Hydroelectric System concession

Law extending concession transition Law No. 9,630 Law that extended the Los Nihuiles concession transition period in Mendoza Province

Commission File Number 001-34429 U.S. SEC file number for Pampa Energía S.A. as foreign issuer

Key Terms

Concession Agreement, Handover Certificate, grantor

3 terms

Concession Agreement regulatory

"the transition period contemplated under the Concession Agreement for the Los Nihuiles"

A concession agreement is a contract where a government or owner gives a company the right to operate, maintain, or exploit a public asset or service (like a road, port, or utility) for a set period in exchange for payments, investments, or sharing revenue. Think of it like renting and running a storefront on behalf of the property owner: the company collects income but must meet rules and invest in upkeep. For investors, these deals shape a firm’s long-term revenue, upfront costs, regulatory risk and cash-flow predictability.

Handover Certificate regulatory

"executed the corresponding Handover Certificate for the Concession Assets."

grantor regulatory

"the Province of Mendoza, in its capacity as grantor and represented by the Minister"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Pampa Energía S.A. (PAM) disclose about the Los Nihuiles concession?

Pampa Energía S.A. disclosed that the concession for the Los Nihuiles Hydroelectric System has ended. The transition period concluded and a formal Handover Certificate was executed to deliver the concession assets to the Province of Mendoza under applicable contractual and regulatory provisions.

When did the Los Nihuiles concession transition period end for Pampa Energía (PAM)?

The transition period for the Los Nihuiles Hydroelectric System concession ended on July 31, 2026. This end date followed an extension granted under Law No. 9,630 and a prior resolution issued by the Minister of Energy and Environment of Mendoza Province.

Who are the parties involved in the Los Nihuiles Hydroelectric System concession for PAM?

The concession involves Hidroeléctrica Los Nihuiles S.A. (HINISA) as concessionaire and the Province of Mendoza as grantor. Mendoza acted through its Minister of Energy and Environment and executed with HINISA the Handover Certificate for the assets allocated to the concession.

What formal document was executed regarding the Los Nihuiles concession assets of PAM?

HINISA and the Province of Mendoza executed a Handover Certificate for the Concession Assets. This document formally records the delivery of the assets allocated to the Los Nihuiles Hydroelectric System concession in accordance with the relevant contractual and regulatory framework.

Which law governed the extension of the Los Nihuiles concession transition for Pampa Energía (PAM)?

The extension of the Los Nihuiles Hydroelectric System concession transition period was governed by Law No. 9,630. That law extended the transition period, which ultimately expired on July 31, 2026, pursuant to a resolution from the Minister of Energy and Environment of Mendoza.

What prior material events related to the Los Nihuiles concession has Pampa Energía (PAM) referenced?

The company referenced prior material events disclosed on June 4, 2024, June 11, 2024, October 22, 2024, January 7, 2025, and July 8, 2025. These earlier disclosures provide background to the final termination and handover of the Los Nihuiles concession.

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Available on EDGAR 07/31/2026 - 04:17 PM Accepted by SEC EDGAR 07/31/2026 - 04:16 PM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

SECURITIES EXCHANGE ACT OF 1934

For the month of July, 2026

(Commission File No. 001-34429),

PAMPA ENERGIA S.A.
(PAMPA ENERGY INC.)

Argentina

(Jurisdiction of incorporation or organization)

Maipú 1
C1084ABA
City of Buenos Aires
Argentina

(Address of principal executive offices)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

Form 20-F ___X___ Form 40-F ______

(Indicate by check mark whether the registrant by furnishing the
information contained in this form is also thereby furnishing the
information to the Commission pursuant to Rule 12g3-2(b) under
the Securities Exchange Act of 1934.)

Yes ______ No ___X___

(If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b): 82- .)

This Form 6-K for Pampa Energía S.A. (“Pampa” or the “Company”) contains:

Exhibit 1: Letter dated July 31, 2026 entitled “Relevant Event. Termination of the Hidroeléctrica Los Nihuiles S.A. concession.”

SIGNATURE

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

Date: July 31, 2026

Pampa Energía S.A.
By:	/s/ Gustavo Mariani
	Name: Gustavo Mariani Title:   Chief Executive Officer

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements. These statements are statements that are not historical facts, and are based on management's current view and estimates offuture economic circumstances, industry conditions, company performance and financial results. The words "anticipates", "believes", "estimates", "expects", "plans" and similar expressions, as they relate to the company, are intended to identify forward-looking statements. Statements regarding the declaration or payment of dividends, the implementation of principal operating and financing strategies and capital expenditure plans, the direction of future operations and the factors or trends affecting financial condition, liquidity or results of operations are examples of forward-looking statements. Such statements reflect the current views of management and are subject to a number of risks and uncertainties. There is no guarantee that the expected events, trends or results will a ctually occur. The statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, and operating factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations.

 

City of Buenos Aires, July 31, 2026

BOLSAS Y MERCADOS ARGENTINOS S.A.

COMISIÓN NACIONAL DE VALORES

Ref.: Relevant event. Termination of the Hidroeléctrica Los Nihuiles S.A. concession.

Dear Sirs,

I am writing to the Comisión Nacional de Valores and Bolsas y Mercados Argentinos S.A. in my capacity as Head of Market Relations of Pampa Energía S.A. (“Pampa”), with reference to the material events disclosed on June 4, 2024 under ID No. 3209068, on June 11, 2024 under ID No. 3212089, on October 22, 2024 under ID No. 3270211, on January 7, 2025 under ID No. 3302758, and on July 8, 2025, in order to inform that, on July 31, 2026, the transition period contemplated under the Concession Agreement for the Los Nihuiles Hydroelectric System, as extended by Law No. 9,630 and set to expire on that date pursuant to a resolution issued by the Minister of Energy and Environment of the Government of the Province of Mendoza, came to an end.

Within this framework, Hidroeléctrica Los Nihuiles S.A. ("HINISA"), in its capacity as concessionaire, and the Province of Mendoza, in its capacity as grantor and represented by the Minister of Energy and Environment, executed the corresponding Handover Certificate for the Concession Assets.

Such certificate formalizes the delivery of the assets allocated to the concession, in accordance with the applicable contractual and regulatory provisions.

Sincerely,

_____________________________

María Agustina Montes

Head of Market Relations

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EX-99.1 4.5 KB