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

~~January 22~~February 18, 2026

Commission File Number: 001-32827

MACRO BANK INC.

(Translation of registrant’s name into English)

Av. Eduardo Madero 1182

Buenos Aires C1106ACY

Tel: 54 11 5222 6500

(Address of registrant’s principal 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.

Form 20-F x Form 40-F ¨o

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):

Yes ¨o No x

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):

Yes ¨o No x

INDEX

Translation of a submission from Banco Macro to the ~~Comisión Nacional de Valores (Argentine Securities Exchange Commission) “~~CNV” dated on ~~January 22~~February 18, 2026.

~~Av.~~Payment of ~~Eduardo~~Cash ~~Madero 1182 – C1106ACY Ciudad Autónoma de Buenos Aires República Argentina www.macro.com.ar~~Dividend

~~Autonomous~~We ~~City~~hereby inform to the Shareholders of ~~Buenos~~Banco ~~Aires~~Macro S.A. that, ~~January 22~~pursuant to (i) the resolutions adopted by the General and Special Shareholders’ Meeting held on April 4th 2025, (ii) Communique “A” 8214 authorizing the financial entities with authorization of the Central Bank of the Republic of Argentina to distribute dividends in 10 equal and consecutive monthly instalments expressed in constant currency, (iii) the authorization by the Superintendency of Financial and Exchange Entities of the Central Bank of the Republic of Argentina obtained last June 4th, and (iv) the resolutions adopted by the Board of Directors at the meeting held on February 18th 2026, Banco Macro S.A. shall make available and pay to its shareholders instalment No. 9 of the cash dividend of AR $ 40,601,848,516.49, (i.e., AR $ 63.5008827206 per share representing 6,350.0882% of the outstanding capital stock of AR $639,390,301).

ToAvailable as of: 02/26/2026

~~Comisión~~Record ~~Nacional~~date: ~~De Valores~~02/25/2026

~~Bolsas~~As yto ~~Mercados~~the ~~Argentinos~~aggregate amount of dividends Banco Macro S.A. shall distribute, please be advised that such amount is subject to a 7% withholding under section 97 of the Income Tax Law as revised in 2019.

A3Such ~~Mercados~~cash dividend shall be made available as of the above stated date at Caja de Valores S.A. located in 25 de Mayo 362, Autonomous City of Buenos Aires, Mondays to Fridays from 10 AM to 3 PM.

~~Re.:~~Shareholders ~~Relevant~~holding ~~Event~~American Depositary Receipts (ADRs) shall receive the relevant dividend under the applicable depositary agreement through The Bank of New York Mellon, as depositary agent of such certificates’ underlying Class B Shares as of the relevant date under the rules applicable in the jurisdiction in which such ADRs of the Company are listed.

Dear Sirs:

We are pleased to inform you that on the date hereof Banco Macro S.A. (“Banco Macro”) has entered into a master agreement with Telecom Argentina S.A. (“Telecom”) and its direct and indirect controlled companies Micro Fintech Holding LLC (“Micro Fintech”) and Micro Sistemas S.A.U. (“Micro Sistemas”) aimed at enhancing the growth and expansion of the business of Micro Sistemas, a payment service provider operating under the brand “Personal Pay”.

This alliance will create a comprehensive and differentiated value proposition for customers operating on the “Personal Pay” platform, while expanding the range of financial products and services to more clients, backed by the industry-leading support of Banco Macro.

To this end, Banco Macro will contribute its expertise in financial products, while Micro Sistemas will provide its extensive base of active customers and recurring use cases with genuine transactionality, driving a more efficient and broader market with a customer-centric approach.

Under the terms of this agreement, Banco Macro is making a capital contribution, and therefore subscribing to shares representing 50% (fifty percent) of the capital stock and voting rights of Micro Sistemas for an amount in Pesos equivalent to US$ 75,000,000 (seventy-five million United States Dollars).

The transaction is subject to approval by the relevant Antitrust Authority, in accordance with applicable regulations.

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: ~~January 22~~February 18, 2026

MACRO BANK INC. By: /s/ ~~Juan~~Jorge MF. ~~Parma~~Scarinci Name: ~~Juan~~Jorge MF. ~~Parma~~Scarinci Title: Chief ~~Executive~~Financial Officer

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