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

June 4, 2026

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 Bolsas y Mercados Argentinos S.A. (BYMA) dated on June 4, 2026.

Autonomous City of Buenos Aires, June 4^th^ 2026

To BYMA

Dear Sirs,

In response to your request, we are pleased to inform you that, as of this date, we have not received notice from Banco Central de la República Argentina regarding the approval of the transaction for the acquisition of all outstanding shares representing 100% of the capital stock and voting rights of Banco Sáenz S.A.

Furthermore, we hereby inform that once said approval is received, it will be promptly disclosed to public investors.

Best regards,

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: June 4, 2026