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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
\nPursuant to Rule 27a-16 or 15d-16
\nunder the Securities Exchange Act of 1934

For the month of October, 2026

Commission File Number: 001-38376

Central Puerto S.A.

(Exact name of registrant as specified in its charter)\n

Port Central S.A.

(Translation of registrant’s\nname into English)

Avenida Thomas Edison 2701

C1104BAB Buenos Aires

Republic of Argentina

+54 (11) 4317-5000

(Address of principal executive offices)

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

Form\n20-F [X] Form 40-F [_]

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

Yes\n[_] No [X]

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

Yes\n[_] No [X]

$\"\"$

BUENOS\nAIRES, October 15, 2026

COMISIÓN\nNACIONAL DE VALORES (“CNV”)
Issuing Companies deputy management
25 de Mayo 175
Buenos Aires City
Attn.:\nManagement of Issuing Companies
Present

BOLSAS\nY MERCADOS ARGENTINOS S.A. (“BYMA”)
Sarmiento 299
Buenos Aires City
Present

MERCADO\nABIERTO ELECTRÓNICO (“MAE”)
San Martin 344
Buenos Aires City
Present

Ref.:\nRelevant Event

Dear Sirs:

I am pleased to address you in my capacity as the Principal Officer in Charge of Investor Relations of\nCentral Puerto S.A. (the “Company” or “CPSA,” as applicable), in compliance with the provisions of Article 11,\nSection II, Chapter I, Title II of the Rules of the Comisión Nacional de Valores (N.T. 2013), in order to inform you that the Company\nand Proener S.A.U. (“Proener”), a wholly owned subsidiary of CPSA, have acquired treasury shares issued by the Company pursuant\nto the terms of Article 64 et seq. of Capital Markets Law No. 26,831 and the regulations of the Comisión Nacional de Valores.

In this regard, we hereby inform you that both the Company and Proener have acquired their own book-entry\nordinary shares, with a par value of $1 (one Peso) and carrying 1 (one) vote per share (the “Shares”), as set forth below:

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

Entity

Market

Transaction Date

Trade completion Date

Number of Shares / ADRs

Equivalent Number of Shares

Average Price

Total

Cash

Amount

CPSA

BYMA

10/15/2026

10/16/2026

120,000

AR$ 2,068.22

AR$ 248,187,004

Proener

NYSE

10/15/2026

10/16/2026

30,000

300,000

USD 12.83

USD 385,067.12

Furthermore, please be advised that the acquisitions made on the same day did not exceed 25% of the average\ndaily trading volume of the Company’s shares during the previous ninety (90) business days.

Yours\nsincerely,

Leonardo Marinaro

Head of Market Relations

Central Puerto S.A.

Avda. Tomás A.\nEdison 2701 – C1104BAB – Ciudad de Buenos Aires – Argentina

Teléfono (54\n11) 4317 5000 – Fax (54 11) 4317 5099

SIGNATURES

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

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

","zhKind","complete","CEPU","公司与财报","回购","aihot","/items/p2p2bwcla84k5s2bi1dszk3lk","https://www.sec.gov/Archives/edgar/data/1717161/000129281426004944/0001292814-26-004944-index.htm","rss-sec-xbrl","name","SEC · EDGAR 财务披露","kind","rss","firstParty","iconUrl","/api/img-proxy?u=https%3A%2F%2Fwww.sec.gov%2Fthemes%2Fcustom%2Fuswds_sec%2Fassets%2Fimg%2Ffavicons%2Fapple-touch-icon.png&mode=avatar&exp=1792368000&sig=7b6974b5a67903ec","iconSrcSet","/api/img-proxy?u=https%3A%2F%2Fwww.sec.gov%2Fthemes%2Fcustom%2Fuswds_sec%2Fassets%2Fimg%2Ffavicons%2Fapple-touch-icon.png&mode=avatar-48&exp=1792368000&sig=85dc13f192a3fa85 48w, /api/img-proxy?u=https%3A%2F%2Fwww.sec.gov%2Fthemes%2Fcustom%2Fuswds_sec%2Fassets%2Fimg%2Ffavicons%2Fapple-touch-icon.png&mode=avatar-96&exp=1792368000&sig=7b2f7276301ea6d9 96w","changelogVersion","2026-10-01T08:00"]

Central Puerto S.A.

Date: October 16, 2026

\n
/s/ Leonardo\n Marinaro

Leonardo Marinaro

Attorney-in-Fact