Macro Bank (NYSE: BMA) director details direct and indirect stakes

Rhea-AI Filing Summary

Macro Bank Inc. director Brito Constanza filed an initial statement of holdings in the company’s securities. The filing reports direct ownership of 500 American depositary shares. Each American depositary share represents ten Class B ordinary shares of Banco Macro S.A.

The filing also lists indirect interests through Sanbay S.A., including 24 Class A ordinary shares, 1,010,266 Class B ordinary shares, and 1,244 American depositary shares. The reporting person disclaims beneficial ownership of securities held by Sanbay S.A., except to the extent of their pecuniary interest.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Brito Constanza

(Last) (First) (Middle)

AV. EDUARDO MADERO 1182

(Street)

BUENOS AIRES C1106ACY

(City) (State) (Zip)

ARGENTINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
Macro Bank Inc. [ BMA ]

3a. Foreign Trading Symbol
[BMA]

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
American depositary shares(1)	500	D
Class A ordinary shares	24	I	By Sanbay S.A.(2)
Class B ordinary shares	1,010,266	I	By Sanbay S.A.(2)
American depositary shares(1)	1,244	I	By Sanbay S.A.(2)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Each American depositary share represents ten (10) Class B ordinary shares of Banco Macro S.A.

2. The reported amount represents the Reporting Person's proportionate interest in securities held by Sanbay S.A. The Reporting Person disclaims beneficial ownership of the securities held by Sanbay S.A. except to the extent of such Reporting Person's pecuniary interest therein.

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Paola Beatriz Gayoso, as Attorney-in-Fact for Constanza Brito	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Macro Bank Inc. (BMA) disclose in Brito Constanza’s Form 3?

The Form 3 discloses Brito Constanza’s initial holdings in Macro Bank Inc. securities, including direct American depositary shares and indirect interests via Sanbay S.A. It establishes baseline ownership levels as the person becomes a reporting insider.

How many Macro Bank (BMA) American depositary shares does Brito Constanza hold directly?

Brito Constanza directly holds 500 American depositary shares of Macro Bank Inc. This position is reported as direct ownership in the filing and serves as part of the starting point for future insider ownership updates.

What indirect Macro Bank (BMA) holdings are reported through Sanbay S.A.?

The filing shows indirect interests through Sanbay S.A. of 24 Class A ordinary shares, 1,010,266 Class B ordinary shares, and 1,244 American depositary shares. These amounts reflect the reporting person’s proportionate interest in securities held by Sanbay S.A.

What is the ADS to Class B ordinary share ratio for Macro Bank (BMA)?

Each Macro Bank American depositary share represents ten Class B ordinary shares. This ratio is specified in the footnotes and explains how ADS holdings relate to the underlying Class B ordinary share position reported in the filing.

Does Brito Constanza fully own the Macro Bank (BMA) shares held by Sanbay S.A.?

The filing states that Brito Constanza disclaims beneficial ownership of securities held by Sanbay S.A., except for their pecuniary interest. This means the reported amounts reflect an economic interest, not full beneficial ownership of all Sanbay S.A. holdings.