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 21, 2026 entitled “Relevant
event. Adherence to the Incentive Regime for Large Investments (“RIGI”) of the RDA Project.”
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 21, 2026
| Pampa Energía S.A. |
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| By: |
/s/ Gustavo Mariani
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Name: Gustavo Mariani
Title: Chief Executive Officer |
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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 21th, 2026
BOLSAS Y MERCADOS ARGENTINOS S.A.
COMISIÓN NACIONAL DE VALORES
Ref.: Relevant event. Adherence to
the Incentive
Regime for Large Investments (“RIGI”) of the RDA
Project.
Dear Sirs,
I am writing to you in
my capacity as Head of Market Relations at Pampa Energía S.A, in order to inform that, to inform you that, on the date hereof,
the Ministry of Economy published Resolution No. 1025/2026 in the Official Gazette, pursuant to which it approved the adherence to the
Incentive Regime for Large Investments (“RIGI”) of the RDA Project, submitted by Pampa Energía S.A. – RDA Project
Dedicated Branch (the “Branch”), qualifying it as a Long-Term Strategic Export Project.
The RDA Project consists
of the development of the Vaca Muerta formation in the Rincón de Aranda block, which covers an area of 237 km². The project
contemplates the drilling and completion of a total of 259 horizontal wells with lateral lengths of up to 3,000 meters, distributed across
three productive horizons. In parallel, a 45,000 bbl/d crude oil treatment and conditioning plant and an 800,000 m³/d gas processing
facility will be constructed, together with the oil and gas pipelines required for production evacuation and the final disposal of fracturing
water.
In accordance with the
provisions of Decree No. 105/2026, the Company’s existing wells are excluded from the scope of the approved RIGI project, and only
the new wells to be drilled by the Branch following the filing of the application for adherence are included.
The total estimated investment
in the RDA Project amounts to US$4.522 billion and will be executed in accordance with the approved investment plan through 2041.
The RDA Project will serve
as a strategic driver to strengthen Argentina’s hydrocarbon production and export capacity, contributing to the consolidation of
the country’s position in the international energy market. In this regard, 100% of crude oil production is expected to be exported,
generating estimated export revenues of approximately US$17 billion over the life of the project.
Sincerely yours,
_____________________________
María Agustina Montes
Head of Market Relations