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

November 2, 2023

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 November 2, 2023.

Autonomous City of Buenos Aires, November 2, 2023

To

Comisión Nacional De Valores

Bolsas Y Mercados Argentinos S.A.

Mercado Abierto ElectrónicoS.A.

Dear Sirs,

I write to you in the name and on behalf of Banco Macro S.A. (hereinafter referred to as the “Bank”), in connection with the share sale and purchase agreement carried out by and between Itaú Unibanco S.A., through its affiliates Itaú Unibanco S.A., Banco Itaú BBA S.A. and Itaú Consultoría de Valores Mobiliários e Participações S.A. (hereinafter collectively referred to as “Itaú”), on August 23^rd^ 2023, in order to inform that on the date hereof Banco Central de la República Argentina has notified us its authorization for the transaction by which the Bank shall acquire the shares representing 100% of the capital stock and votes of Banco Itaú Argentina S.A., and the shares of Itaú Asset Management S.A. and Itaú Valores S.A. which shall, directly and indirectly, grant the Bank 100% of the capital stock and votes of each of the above mentioned companies.

Sincerely,

Jorge F. Scarinci

Head of Market Relations

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: November 2, 2023