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

May 12, 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’sprincipal executive offices)

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 May 12, 2023.

Autonomous City of Buenos Aires, May 12 2023

Comisión Nacional de Valores/

Bolsas y Mercados Argentinos S.A./

Mercado Abierto Electrónico S.A.

Dear sirs,

Please be advised that on the date hereof the Superintendencia de Entidades Financieras y Cambiarias of the Central Bank of the Republic of Argentina informed us that it has decided to authorize Banco Macro S.A. to distribute profits for an aggregate amount of AR $75,040,918,000, as requested by the Bank, which distribution shall be carried out in 6 monthly equal and consecutive installments.

Yours 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: May 12, 2023