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 March, 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]

~~BUENOS~~Relevant ~~AIRES,~~part ~~March~~of ~~19,~~the ~~2026~~Minutes of Central Puerto S.A.

~~Note:~~Board ~~CPSA-GG-N-0103/26-AL~~of Directors’ Meeting held on March 5, 2026

~~COMISIÓN~~Minutes ~~NACIONAL~~No. DE430: ~~VALORES~~In the City of Buenos Aires, on March 5, 2026, at 9.00 am, the Board of Directors of CENTRAL PUERTO S.A. (~~"CNV"~~the “Company” or “CPSA”, indistinctly) meet, with the presence of Directors Osvaldo RECA, Miguel DODERO, Diego PETRACCHI, Tomas WHITE, Marcelo Atilio SUVA, José Luis MOREA, Martin LHEZ, Martina BLANCO, and Jorge Eduardo VILLEGAS, and the members of the Company’s Statutory Audit Committee, Cesar HALLADJIAN, Eduardo EROSA and Juan NICHOLSON. Mr. RECA informs that the Meeting is held via videoconference pursuant to Section 23 of CPSA’s Bylaws, which section states that the Board of Directors can hold meetings with members communicated via videoconference. Quorum being sufficient to hold the meeting, (...) the tenth item in the Agenda is open for discussion: ANNUAL GENERAL SHAREHOLDER’S MEETING CALL. Mr. Osvaldo Reca takes the floor and moves to call the Annual General Shareholders’ Meeting of Central Puerto S.A. on April 30 at 11.00 a.m. on first call, and at 12.00 p.m. on that same day on second call, should the first call fail, which will be held remotely, in order to consider the following agenda:

~~Deputy~~1. ~~Manager~~Appointment of ~~Issuing~~two ~~Companies~~shareholders to sign the minutes.

~~May~~2. 25Consideration of the Annual Report and its exhibit, ~~175~~the Consolidated Statement of Income, the Consolidated Statement of Comprehensive Income, the Consolidated Balance Sheet, the Consolidated Statement of Changes in Equity, the Consolidated Statement of Cash Flows, the Notes to the Consolidated Financial Statements and Exhibits, the Individual Statement of Income, the Individual Statement of Comprehensive Income, the Individual Balance Sheet, the Individual Statement of Cash Flows, the Notes to the Individual Financial Statements, the Brief, the Auditor Reports, and the Statutory Audit Committee Report, all of them for the fiscal year ended December 31, 2025.

~~City~~3. AConsideration of the income (loss) for the fiscal year and the Board of Directors’ proposal to allocate the accumulated retained earnings for the creation of an optional reserve to be used, indistinctly: (i) for the distribution of dividends based on the evolution of the financial position of the Company and the Company’s provisions related to dividends distribution in force, and to delegate to the Board of Directors the power to partially or totally release such reserve for the distribution of dividends and the determination of the time, currency, terms and other conditions related to the payment, pursuant to the scope of the delegation granted by the Shareholders’ Meeting, and (ii) for the acquisition of the Company’s treasury shares, delegating to the Board of Directors the power to determine the time, terms and conditions of its release, whether partial or total, to be applied to such end. Consideration and approval of ~~Buenos~~the ~~Aires~~payment of the Profit-Sharing Bond under Sections 12 and 33 of the Bylaws. Consideration of the allocation of the statutory reserve surplus for the amount of ARS 29,273,279 [thousands].

At4. ~~Issuer~~Consideration ~~office~~of the Board of Directors performance during the fiscal year ended December 31, 2025.

~~Present~~5. Consideration of the Statutory Audit Committee performance during the fiscal year ended December 31, 2025.

~~BOLSAS~~6. YConsideration ~~MERCADOS~~of ~~ARGENTINOS~~the Sremuneration of the Company’s Board of Directors for the fiscal year ended December 31, 2025, within the limits of the profit, pursuant to Section 261 of the Business Entities Act and CNV Regulations.A. ~~("BYMA")~~Consideration of the advanced payment of fees to the Board of Directors for the next fiscal year ending December 31, 2026.

~~Sarmiento~~7. ~~299~~Consideration of the remuneration of the members of the Statutory Audit Committee for the fiscal year ended December 31, 2025 and the fee scheme for the next fiscal year ending December 31, 2026.

~~City~~8. APartial renewal of the Board of Directors. Appointment of ~~Buenos~~3 ~~Aires~~(three) directors and 3 (three) deputy directors, for the term of 3 (three) periods, pursuant to Section 17 of the Bylaws. Continuity of the current Chairman until the appointment to be made by the Board of Directors of the Company.

~~Present~~9. Appointment of the Statutory Audit Committee members and deputy members for the next fiscal year ending December 31, 2026.

A10. 3Consideration ~~MERCADOS~~of Sthe remuneration of the Company’s certifying accountant regarding the annual accounting documents for the fiscal year 2025.A.

~~Paraguay~~11. ~~777~~Appointment of the certifying accountant and of the deputy certifying accountant for the next fiscal year ending December 31, 2026 and the fixing of their remuneration.

~~Rosario~~12. Approval of the Annual Budget for the functioning of the Supervisory Committee.

~~Present~~13. Granting of authorizations.

~~Ref~~Notes: Shareholders are reminded that in order to attend the Annual General Meeting they have to submit the book-entry shares certificate issued by Caja de Valores S.A. before the Company until April 24, 2026 as described on item (2) of this Note. In the case of shares deposited in securities accounts, holders of such shares must request such certificate to the corresponding depositor. Taking into account Section 14 of the Company’s Bylaws, the Annual General Meeting will be held remotely via videoconference in accordance with the terms of such regulations, among others, under the following conditions: ~~Relevant~~(i) ~~Fact~~to ensure free access to the meetings to all Shareholders with the right to voice and vote; and (ii) to allow for the simultaneous transmission of sound, images and words during the whole meeting, as well as its recording in digital format. To such effect, it is informed that: (1) the system to be used shall be provided by ZOOM, which can be accessed through the link to be sent together with the instructions on Meeting access and development to the Shareholders informing their attendance via e-mail in accordance with the following item. (2) Shareholders shall communicate their attendance to the Meeting with the instruments required by the regulations in force via e-mail to the following e-mail address: AsambleaCPSA@centralpuerto.com, no ater than 3 (three) business days before the Annual General Meeting; i.e. until April 24, 2026 inclusively. Unless otherwise stated and to inform the videoconference link, the email address will be the one used by each Shareholder to inform their attendance. (3) In case of attending through proxy, the duly authenticated authorization instrument must be sent to the Company 5 (five) days before the Meeting is held (i.e. until April 22, 2026 inclusively). (4) When entering the Meeting, the following data of the Shareholder must be given: full name or complete corporate name; type and number of ID of human persons, or registration data of the business entities stating where they are registered and their jurisdiction; address, stating its type. Such information shall be also given by the person attending the Meeting on behalf of a Shareholder. (5) When voting, each Shareholder shall be asked about the motions proposed so as to cast their vote with audio and image, ensuring its verification at any stage; and (6) The documents to be discussed are available on CNV website (Financial Information Highway), and (7) Shareholders covered by Section 24 of Chapter II, Title II of CNV Regulations, amended by CNV General Resolution No. 687 dated February 16, 2017 are reminded that they shall inform the Company about their beneficial owners with the scope stated in such resolution. Osvaldo Reca is the Company’s Chairman as per the Board of Directors’ Meeting held on May 9, 2025. The proposal of Mr. Reca is approved unanimously. (…)

~~From~~Before mythe ~~consideration:~~Meeting is adjourned, the Statutory Auditor, Mr. Cesar Halladjian, takes the floor on behalf of the Statutory Audit Committee, and expressly states the lawfulness of the decisions adopted at the Meeting pursuant to the Bylaws, the Business Entities Act and CNV General Resolution No. 830/20. There being no further business to transact, the meeting is adjourned at 09.50 a.m.

I am pleased to write to you, in my capacity as Head of Market Relations of Central Puerto S.A. (the "Company") in order to inform you that the Board of Directors of the Company has resolved to submit to the consideration of the shareholders the following proposals, regarding the items on the agenda of the Ordinary General Meeting to be held on April 30, 2026, which are detailed below:

3. Consideration of the results of the year, and of the proposal of the Board of Directors consisting of allocating the accumulated unallocated results to the constitution of an optional reserve to be used indistinctly: (i) for the payment of dividends based on the evolution of the Company's financial condition and the provisions of the Company's current dividend distribution policy, and that the Board of Directors of the Company be delegated its total or partial disaffection to be applied to the payment of the dividend and the determination of the opportunity, currency, terms and other terms and conditions of the payment in accordance with the scope of the delegation provided by the meeting, and (ii) for the acquisition of own shares of the Company, delegating to the Board of Directors of the Company the opportunity, terms and conditions of its disaffection, whether total or partial, to apply it for this purpose. Consideration and approval of the payment of the Participation Bonus provided for in articles 12 and 33 of the Bylaws. Consideration of the use to be given to the surplus of the legal reserve in the amount of thousands of pesos $29,273,279.

Avda. Tomás A. Edison 2701 – C1104BAB – City of Buenos Aires – ArgentinaPhone (54 11) 4317 5000 – Fax (54 11) 4317 5099

The Board of Directors proposes to the shareholders: a) to allocate the accumulated unallocated results and the sum of the legal reserve that is in excess of the amount established by the applicable regulations and the bylaws, in the amount of thousands of pesos $29,273,279, to the constitution of an optional reserve to be used indistinctly: (i) for the payment of dividends based on the evolution of the Company's financial condition and the provisions in the company's current dividend distribution policy, and that the Company's Board of Directors delegate its total or partial disallocation to be applied to the payment of the dividend and the determination of the opportunity, currency, terms and other terms and conditions of payment in accordance with the scope of the delegation provided by the meeting, and (ii) for the acquisition of the Company's own shares, delegating to the Company's Board of Directors the opportunity, terms and conditions of their disposal, whether total or partial, to apply it for that purpose, and b) the participation bonus of the Company's personnel is paid, in accordance with Articles 12 and 33 of the Bylaws, delegating to the board of directors the conditions of its payment.

6. Consideration of the remuneration of the members of the Board of Directors of the Company, corresponding to the fiscal year ended December 31, 2025 within the limit with respect to profits, in accordance with Article 261 of the General Law of Companies and the Regulations of the National Securities Commission. Consideration of the advance of fees to the Board of Directors for the year ending December 31, 2026.

The Board of Directors proposes to the shareholders that: a) the advances of fees received by the Board of Directors during the year ended December 31, 2025 for the total amount of $ 213,320,640 be ratified in consideration of their competence and professional reputation; and b) the members of the Board of Directors are authorized to continue to receive advances of fees ad referendum after their subsequent approval by the corresponding shareholders' meeting.

Avda. Tomás A. Edison 2701 – C1104BAB – City of Buenos Aires – ArgentinaPhone (54 11) 4317 5000 – Fax (54 11) 4317 5099

7. Consideration of the remuneration of the members of the Company's Supervisory Committee, corresponding to the financial year ended December 31, 2025, and fee regime for the year ending December 31, 2026.

The Board of Directors proposes to the shareholders that: a) the advances of fees received during the fiscal year ended December 31, 2025 by the Auditors for a total of $ 27,704,000 be approved; and b) the members of the Supervisory Committee are authorized to continue to receive advances on fees ad referendum after their subsequent approval by the corresponding shareholders' meeting.

8. Partial renewal of the Board of Directors. Appointment of three (3) regular directors and three (3) alternate directors, for a period of three (3) years, in accordance with the provisions of art. seventeenth of the bylaws. Continuity of the current president until the appointment to be made by the Board of Directors of the company.

The Board of Directors of the Company proposes to the shareholders the appointment of Mr. Miguel DODERO, José Luis MOREA and Tomás José WHITE, as titular directors, and Mr. Juan Manuel ORTIZ, Adrián Gustavo SALVATORE, and Martín OROZCO, as alternate directors to exercise their functions for three (3) years.

10. Consideration of the remuneration of the Company's accountant, corresponding to the annual accounting documentation for the 2025 financial year.

The Company's Board of Directors proposes to the shareholders that the remuneration of the external auditors for the 2025 financial year be approved in the amount of $1,053,090,478 for audit services and $64,155,674 for tax services.

Avda. Tomás A. Edison 2701 – C1104BAB – City of Buenos Aires – ArgentinaPhone (54 11) 4317 5000 – Fax (54 11) 4317 5099

11. Appointment of the regular and alternate accountant for the financial year ending on 31 December 2026 and setting of their remuneration.

The Board of Directors of the Company proposes to the shareholders the firm EY as independent auditors for the fiscal year 2025 and the appointment of Mr. Pablo Gabriel Decundo (C.P.C.E.C.A.B.A. T°286, F°106) partner of said firm, as Titular Auditor, and Mr. Diego Hernan Christensen (C.P.C.E.C.A.B.A. T°410, F°165) as Alternate Accounting Accountant of the aforementioned financial statements, respectively.

12. Approval of the Annual Budget for the operation of the Audit Committee.

The Board of Directors of the Company proposes to the shareholders that an item of $ 4,600,000 be assigned for the operation of the Audit Committee.

Sincerely,

Avda. Tomás A. Edison 2701 – C1104BAB – City of Buenos Aires – Argentina

Phone (54 11) 4317 5000 – Fax (54 11) 4317 5099

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: March 19, 2026	By:	/s/ Leonardo Marinaro
Date: March 26, 2026	By:	/s/ Leonardo Marinaro
	Name:	Leonardo Marinaro
	Title:	Attorney-in-Fact

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