STOCK TITAN

GERDAU S.A. (GGB) insider discloses 18,119 RSU-linked preferred shares vesting in 2029

(Neutral)
(Neutral)
Form Type
3/A

Rhea-AI Filing Summary

GERDAU S.A. senior manager Marcos Zilles Mattiello reported his equity holdings, including Restricted Stock Units that are convertible into 18,119 preferred shares at a conversion price of $4.0400 per share. According to the disclosure, these restricted stock units vest on March 1, 2029 and are associated with American Depositary Receipts. The filing also lists direct holdings of preferred shares, with no new purchases or sales reported.

Positive

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Negative

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Insider Mattiello Marcos Zilles
Role Insider
Type Security Shares Price Value
holding Restricted Stock Units F2 -- -- --
holding Preferred shares -- -- --
holding Preferred shares F1 -- -- --
Holdings After Transaction: Restricted Stock Units — 18,119 shares (Direct); Preferred shares — 19,384.111 shares (Direct)
Footnotes (2)
  1. F1. American Depositary Receipts.
  2. F2. Restricted stock units vest on March, 1, 2029 (American Depositary Receipts).
Underlying preferred shares 18,119.0000 shares Underlying shares for Restricted Stock Units held directly by the insider
Conversion price $4.0400 per share Conversion or exercise price for the Restricted Stock Units
Vesting/expiration date 2029-03-01 Vesting date for the Restricted Stock Units and expiration date in derivative summary
RSU holdings entry 18,119.0000 units Total shares following transaction for Restricted Stock Units holding entry
Holding entries 3 Number of holding entries reported in transaction summary
Restricted Stock Units financial
"security_title: "Restricted Stock Units" with underlying preferred shares"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
American Depositary Receipts financial
"Footnote: "American Depositary Receipts." and RSUs vesting note"
A certificate traded on U.S. markets that represents ownership of shares in a foreign company, letting U.S. investors buy and sell that company as if it were listed domestically. Think of it as a local voucher for a foreign product: it makes price quotes in dollars, trades on familiar exchanges, and brings differences in liquidity, fees and legal protections that can affect returns and risk compared with buying the underlying foreign shares directly.
underlying preferred shares financial
"underlying_security_title: "Preferred shares" with 18,119.0000 underlying"

FAQ

What insider position did GERDAU S.A. (GGB) report for Marcos Zilles Mattiello?

The company reported that senior manager Marcos Zilles Mattiello holds Restricted Stock Units linked to 18,119 preferred shares and has direct holdings of preferred shares, with no new buy or sell transactions disclosed.

How many GERDAU S.A. (GGB) shares underlie the reported Restricted Stock Units?

The Restricted Stock Units are linked to 18,119 underlying preferred shares. These units represent a right to receive preferred shares in the future, subject to vesting conditions and the stated vesting date of March 1, 2029.

What is the conversion or exercise price of the GERDAU S.A. (GGB) Restricted Stock Units?

The Restricted Stock Units have a reported conversion or exercise price of $4.0400 per share. This price applies to the 18,119 underlying preferred shares associated with the units held directly by the senior manager.

When do the GERDAU S.A. (GGB) Restricted Stock Units for Marcos Zilles Mattiello vest?

The Restricted Stock Units are disclosed to vest on March 1, 2029. A footnote clarifies that these units relate to American Depositary Receipts, tying the vesting event to ADR-based equity compensation for the senior manager.

Are the reported GERDAU S.A. (GGB) holdings American Depositary Receipts (ADRs)?

A footnote specifies that the preferred shares and related Restricted Stock Units are associated with American Depositary Receipts. This means the equity interests are represented in ADR form rather than directly as local Brazilian shares.

Does the GERDAU S.A. (GGB) Form 3/A show any insider buying or selling activity?

No new buying or selling activity is shown. The filing presents holding entries only, detailing existing Restricted Stock Units and preferred share positions, with transaction directions marked as unknown and no buy or sell codes reported.

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Learn about SEC filing dates
SEC Form 3
FORM 3UNITED 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
OMB APPROVAL
OMB Number:3235-0104
Estimated average burden
hours per response:0.5
1. Name and Address of Reporting Person*
Mattiello Marcos Zilles

(Last)(First)(Middle)
AVENUE DOUTORA RUTH DE CARDOSO, 8501
8TH FLOOR, PINHEIROS

(Street)
SAO PAULOSAO PAULO05425-070

(City)(State)(Zip)

BRAZIL

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
08/06/2026
3. Issuer Name and Ticker or Trading Symbol
GERDAU S.A. [ GGB ]
3a. Foreign Trading Symbol
[GGBR]
5. If Amendment, Date of Original Filed (Month/Day/Year)
03/17/2026
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
Officer (give title below)XOther (specify below)
Senior management
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
Preferred shares8,997D
Preferred shares(1)10,387.111D
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 ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units03/01/202903/01/2029Preferred shares(2)18,119$4.04D
Explanation of Responses:
1. American Depositary Receipts.
2. Restricted stock units vest on March, 1, 2029 (American Depositary Receipts).
/s/ Marcos Zilles Mattiello08/14/2026
** Signature of Reporting PersonDate
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)