UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 6-K

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Report of Foreign Private Issuer

Pursuant to Rule 27a-16 or 15d-16

under the Securities Exchange Act of 1934

For the month of October, 2023

Commission File Number: 001-38376

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Port Central S.A.

(Translation of registrant’s name into English)

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Avenida Thomas Edison 2701

C1104BAB Buenos Aires

Republic of Argentina

+54 (11) 4317-5000

(Address of principal executive offices)

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

Form 20-F ☒     Form 40-F ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Yes ☐     No ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes ☐     No ☒

CENTRAL PUERTO S.A

BUENOS AIRES, October 17, 2023

 Notice: CPSA-GG-N-0439/23/AL

COMISIÓN NACIONAL DE VALORES (“CNV”)

Deputy Management of Issuing Companies

25 de Mayo 175

City of Buenos Aires

To Issuance Companies

BOLSAS Y MERCADOS ARGENTINOS S.A. (“BYMA”)

Sarmiento 299

City of Buenos Aires

MERCADO ABIERTO ELECTRÓNICO (“MAE”)

San Martin 344

City of Buenos Aires

Subject: Material News

Dear Mr./Mrs.,

It is a pleasure to contact you in my capacity as Head of Market Relations of Central Puerto S.A. (the “Company”) in compliance of Article 11, Section II, Chapter I, Title II of CNV Regulations (N.T. 2013) regarding the plan on the acquisition of own shares, which was approved by the Company’s Board of Directors at the meeting held on August 24, 2023 (the “Plan”) so as to inform you that the Company’s Board of Directors decided to change the terms and conditions established in point (iv) of the Plan by increasing the maximum price to be paid in ARS: from ARS 605 to ARS 800 per common share in Bolsa y Mercados Argentinos (“BYMA”). The maximum price to be paid in US dollars remains unaltered (USD 8 per American Depositary Receipt (“ADR”) in the New York Stock Exchange (“NYSE”).

Yours sincerely,

Leonardo Marinaro

Head of Market Relations

Central Puerto S.A.

SIGNATURES

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.