UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer
Pursuant to Rule 27a-16 or 15d-16
under the Securities Exchange Act of 1934

For the month of April, 2026

Commission File Number: 001-38376

Central Puerto S.A.

(Exact name of registrant as specified in its charter)

Port Central S.A.

(Translation of registrant’s name 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 will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F [X] 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 [X]

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 [X]

CENTRAL PUERTO ANNOUNCES FIRST QUARTER 2026 RESULTS DATE

Buenos Aires – April 28, 2026 – Central Puerto SA ("Central Puerto" or the "Company") (BYMA: CEPU), the largest private power energy generation company in Argentina, will release the results for the first quarter of 2026 on Tuesday, May 12, 2026. The Company's leadership team will host a conference call to discuss the Company's financial results on Wednesday, May 13, 2026 at 11:00 A.M. ET (12:00 P.M. BAT).

To register and access the conference call, access the following link: Click here

Conference call link will be also available at Central Puerto’s "Investors" section at www.centralpuerto.com. Please save extra time before the call to visit the website and download any software that may be needed to listen to the webcast. The call will then be available for replay on the Central Puerto website in the "Investors" section.

Contact:

[email protected]

Phone: +54 11 4317-5000

Av. Tomás Alba Edison 2701

Dock E – Port of Buenos Aires

(C1104BAB) City of Buenos Aires

Argentina

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.

Central Puerto S.A.

Date: April 28, 2026

/s/ Leonardo Marinaro

Leonardo Marinaro

Attorney-in-Fact

CENTRAL PUERTO S.A. 6-K