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

March 7, 2025

Commission File Number: 001-32827

MACRO BANK 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 Comisión Nacional de Valores (Argentine Securities Exchange Commission) “CNV” dated on March 7, 2025.

City of Buenos Aires, March 7^th^, 2025

To

Comisión Nacional de Valores (Argentine Securities Exchange Commission)

Ref.: Relevant event

We write to you in order to inform that on the date hereof the Board of Directors received a letter from Mr. Delfín Jorge Ezequiel Carballo, as shareholder of Banco Macro S.A., and Mr. Martín Culeddu acting jointly with Mr. Mariano García, as attorneys-in-fact of Banco de Servicios y Transacciones S.A., trustee of the shareholder of Banco Macro S.A., Fideicomiso de Garantía JHB BMA, by which they advised the Board that, at the next General and Special Shareholders’ Meeting to be held by the Bank, at which the shareholders shall discuss among other matters the appointment of new members of the Board, they intend to nominate as (i) regular directors for three fiscal years, Messrs. Jorge Pablo Brito, Carlos Alberto Giovanelli, Nelson Damián Pozzoli and Fabián Alejandro de Paul; and (ii) alternate directors for three fiscal years, Messrs. Santiago Horacio Seeber and Juan Ignacio Catalano.

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: March 7, 2025