SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K 

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13A-16 OR 15D-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2026

Commission File Number: 001-12102 

YPF Sociedad Anónima

(Exact name of registrant as specified in its charter)

Macacha Güemes 515

C1106BKK Buenos Aires, Argentina

(Address of principal executive office)

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 ☒ Form 40-F ☐ 

YPF Sociedad Anónima

TABLE OF CONTENT

ITEM 1      Translation of letter to the Argentine Securities Commission (Comisión Nacional de Valores) dated August 10, 2026.

Buenos Aires, August 10, 2026.

COMISIÓN NACIONAL DE VALORES (“CNV”)

25 de Mayo 175

Buenos Aires

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

Sarmiento 299

Buenos Aires

A3 MERCADOS S.A. (“A3 Mercados”)

Maipú 1210

Buenos Aires

Ref.: Changes in the Board of Directors of YPF S.A.

Ladies and Gentlemen,

We are writing to you in order to comply with the CNV Rules and the corresponding regulations of ByMA and A3 Mercados.

In this regard, we hereby inform that the Board of Directors, at its meeting on August 10, 2026, acknowledged receipt of the communication sent by the Class A shareholder, the Argentine National State - Secretariat of Energy - Ministry of Economy, appointing Mr. Diego Cesar Santilli as a Director representing the Class A Shares. It is hereby noted that Mr. Diego Cesar Santilli has expressly and irrevocably waived, for the entire duration of his appointment, the right to receive any remuneration, fees, per diem, compensation, travel allowance, or any other form of financial payment to which he might be entitled for the performance of that position.

Sincerely,

Margarita Chun

Market Relations Officer

YPF S.A.

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.