6-K

UNITED STATES

SECURITIES AND EXCHANGECOMMISSION

Washington, D.C.20549

FORM 6-K

REPORT OF FOREIGNISSUERPURSUANT TO RULE 13a-16 OR 15d-16 UNDER

SECURITIES EXCHANGEACT OF 1934

For the month of March,2026

(Commission FileNo. 001-34429),

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

Argentina

(Jurisdiction ofincorporation or organization)

Maipú 1C1084ABACity of Buenos AiresArgentina

(Address of principalexecutive 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:

Exhibit1: Letter dated March 9, 2026 entitled “Call to General Ordinary and Extraordinary Shareholders’ Meeting to be held on April 7, 2026.”

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: March 9, 2026

FORWARD-LOOKINGSTATEMENTS

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.

Call to General Ordinary and Extraordinary Shareholders’Meeting to be held on April 7, 2026.

Pampa Energía S.A. calls a General Ordinary and Extraordinary Shareholders’ Meeting of the Company to be held on April 7, 2026, at 11 a.m., at the first call, and in the case of the General Ordinary Shareholders’ Meeting, at noon, a second call to be held virtually according to the terms of the article 30 of the Company’s bylaws by Microsoft Teams to deal with the following Agenda:

NOTE 1: Shareholders shallsend the relevant certificates evidencing the balance of their book-entry accounts, issued to such effect by Caja de Valores S.A., toMaipú 1, Ground Floor, City of Buenos Aires or by e-mail to [email protected], on any business day from 10.00 a.m. to6.00 p.m. until and including March 30, 2026. NOTE 2: According to the provisions of the Regulations of the Argentine SecuritiesCommission, as amended in 2013, when enrolling to participate at the Meeting, the Shareholder shall report the following data: first andlast name or complete corporate name; type and personal identity document number in the case of natural persons or registration data inthe case of legal entities, expressly indicating the Registry where they are registered with and its jurisdiction, domicile and type ofaddress and phone and e-mail. The same information must be filed by any person who attends the Meeting as representative of a shareholder. NOTE 3: The Meeting will be held by Microsoft Teams that guarantees: (i) accessibility to all registered shareholders,with voice and vote; (ii) simultaneous transmission of sound, images and words through the Meeting; and (iii) the recording of the Meetingwith digital support. We will send the instructions to connect to the Meeting to those who registered to the above-mentioned email. Proxysmust be sent FIVE (5) working days in advance of the Meeting to our email informed in item 1. NOTE 4: Shareholders are herebyreminded that, following the Regulations of the Argentine Securities Commission, as amended in 2013, in the event of shareholders thatare entities organized abroad, information shall be given about the ultimate beneficial owners of the shares that comprise the capitalstock of the foreign Company and the number of shares that they shall vote, stating first and last name, nationality, actual domicile,date of birth, national identity document or passport number, taxpayer identification number (CUIT), worker’s identification number(CUIL) or any other form of tax identification and occupation*. NOTE 5:** In addition, if the Shareholder is a trust or anyother similar entity, or a foundation or any other similar entity, whether public or private, it shall be required to comply with Section26, Chapter II, Title II of the Regulations of the Argentine Securities Commission, as amended in 2013. NOTE 6: The Shareholdersare hereby required to be present at least 15 minutes in advance of the time scheduled for holding the Meeting.*

María Agustina Montes

Head of Markets Relations