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

April 30, 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 the CNV dated on April 30, 2026.

Autonomous City of Buenos Aires, April 30^th^ 2026

CNV/BYMA/A3Mercados

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 $ 138,956,468,470 (amount expressed in constant currency as of 31 December 2025), in cash or in kind, as requested by the Bank, which distribution shall be made under the terms provided for in the rules and regulations on "Distribution of Profits" currently in force.

Pursuant to Communication “A” 8410, such amount shall be paid in 3 monthly, equal and non-cumulative installments, in constant currency as of the date of the shareholders' meeting. The amount of the dividend expressed in constant currency as of February 28, 2026 amounts to AR $147,101,261,954.

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: April 30, 2026