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 15, 2024

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 November 15, 2024.

Autonomous City of Buenos Aires, November 15^th^ 2024

To

CNV/BYMA/MAE

Ref.: Relevant event

Dear Sirs,

Please be advised that, on the date hereof, we have been given notice of the registration with the Public Registry of the merger of Banco BMA S.A.U. into Banco Macro S.A., the latter being the surviving company and Banco BMA S.A.U. the merged company.

Yours 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 15, 2024