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 17, 2026 entitled “Relevant event. FID Fertilizers Project – Granting
of Guarantee for EPC Contract”
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 17, 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 17th, 2026
BOLSAS Y MERCADOS ARGENTINOS S.A.
COMISIÓN NACIONAL DE VALORES
Ref.: Relevant event. FID Fertilizers Project
– Granting of Guarantee for EPC Contract.
.
Dear Sirs,
I am writing to you in my capacity
as Head of Market Relations at Pampa Energía S.A. (the “Company”) in order to report the following:
(1) The Company, through its wholly-owned
subsidiary Fértil Pampa S.A.U. (“Fértil Pampa”), in which it holds 100% of the capital stock, has been
evaluating the development of a single project for the construction, operation and management of a production complex with a capacity
of 6,000 tons per day of granulated urea (or 2,100,000 tons per year), which will produce urea and ammonia, and will require an investment
of approximately US$2.7 billion (the “Project”);
(2) On April 21, 2026 and June
10, 2026, Fértil Pampa filed applications for the adherence of the Project to the Incentive Regime for Large Investments (“RIGI”)
and to the Strategic Investments Regime of the Province of Buenos Aires (“REPIE”), respectively, the approvals of which
are essential for the Project and, in the case of RIGI, its lack of approval entitles the Company to exercise certain rights under the
EPC Contract.
(3) After conducting a comprehensive
analysis of the Project, the Board of Directors of the Company, at a meeting held on the date hereof, resolved to approve the final investment
decision of the Project (“FID”);

(4) The Project will be built and
developed within a period of approximately 41 months, through the execution of an engineering, procurement, construction and commissioning
contract (the “EPC Contract”) to be entered into on a lump-sum "turnkey" basis, between Fértil
Pampa, as owner, and Tecnimont SPA and SACDE S.A., as contractors (the “Contractors”), who were awarded the construction
of the Project pursuant to an open international bidding process, having complied with all the conditions of the tender documents and
having submitted the most competitive offer from a technical and economic standpoint.
(5) Additionally, the Board of
Directors resolved to approve the granting by the Company of certain parent company guarantees in favor of the Contractors under
the EPC Contract, in order to secure the performance of all payment obligations of Fértil Pampa under said contract. Such guarantees
are structured in line with market standards for this type of project and shall in no event affect the Company's or its subsidiaries'
ability to meet their financial commitments, nor alter their risk profile.
(6) Given that one of the guarantees
will be granted in favor of SACDE S.A., a related party of the Company, and that the guaranteed amount exceeds 1% of the Company's net
worth, on the date hereof the Audit Committee issued and approved, pursuant to Section 72 of the Capital Markets Law No. 26,831, a report
on related-party transactions, in which it was stated that, in the opinion of the Audit Committee, the terms of the guarantee are reasonably
framed within normal and customary market conditions. The opinion of the Audit Committee is available to shareholders who so request at
the Company's registered office.
The Project constitutes a strategic
initiative for the integration of the Company's business segments. It should be noted that the Project will require significant consumption
of natural gas and electricity, which are critical inputs for its operation and will be supplied mainly by the Company. Together, the
cost of such inputs accounts for approximately 70% of the Project's cost structure, which underscores the strategic relevance of its integration
and efficient management, as well as its direct impact on the Project's competitiveness and economic sustainability.

Furthermore, given the structural
deficit in the regional fertilizer trade balance, as evidenced by the high annual import volumes of urea in both Argentina and Brazil
(South America imports approximately 11.5 million tons of urea per year), the Project will have a regional scope that will enable both
the Company —through Fértil Pampa— and the Argentine Republic to position themselves as relevant players in the regional
urea market. With a strong export profile, the Project will generate a sustained flow of foreign currency throughout its useful life,
with expected exports exceeding US$24 billion and import substitution estimated at over US$16 billion, which would translate into a cumulative
foreign exchange surplus in excess of US$40 billion.
In the current context of high
imports from outside the region, the development of the Project is strategic, as it will contribute to import substitution, strengthen
security of supply and reduce dependence on external sources. To date, supply is highly concentrated in Middle Eastern producers, which
accounted for 34% of global urea exports in 2025, along with growing exposure to the volatility of international prices associated with
armed conflicts. Accordingly, the Project will have a positive impact on the competitiveness and stability of the regional market, supporting
the supply of a key input for the agro-industry.
Sincerely yours,
_____________________________
María Agustina Montes
Head of Market Relations