6-K

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

April 8, 2026

Commission File Number: 001-32827

MACROBANK INC.

(Translation of registrant’s name intoEnglish)

Av. Eduardo Madero 1182

Buenos Aires C1106ACY

Tel: 54 11 5222 6500

(Address of registrant’s principal executiveoffices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or 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):

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):

INDEX

Translation of a submission from Banco Macro to the CNV dated on April 8, 2026.

Buenos Aires, April 8th 2026

To

Comisión Nacional de Valores (ArgentineSecurities Exchange Commission)

Please be advised that the Board of Directors, in its meeting held on the date hereof, has designated the regular members of the Audit Committee, which shall therefore be composed as follows: Messrs. Mario Luis Vicens, Fabián Alejandro de Paul and Sebastián Palla.

We also inform the designation of Mr. Fabián Alejandro de Paul as Financial Expert of the Bank's Audit Committee, under the terms established by the Sarbanes Oxley Act of 2002.

Sincerely,

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, thereto duly authorized.

Date: April 8, 2026