STOCK TITAN

Gerdau EVP sells 51,800 preferred shares at $5.09

An executive vice president of GGB sold preferred shares while retaining a sizable direct and RSU-based position.

(Moderate)
(Negative)
Form Type
4

Rhea-AI Filing Summary

GERDAU S.A. (GGB) reports that Executive Vice President Rafael Gamboa Lopes sold 51,800 preferred shares on September 17, 2026 at $5.09 per share, leaving him with 83,399 preferred shares held directly. He also holds several tranches of restricted stock units linked to preferred shares with exercise prices translated from Brazilian reais.

Positive

  • None.

Negative

  • None.
Insider Lopes Rafael Gamboa
Role Insider
Sold 51,800 shs ($264K)
Type Security Shares Price Value
Sale Preferred shares F1 51,800 $5.09 $264K
holding Restricted Stock Units F1 -- -- --
holding Restricted Stock Units F1 -- -- --
holding Restricted Stock Units F1 -- -- --
holding Restricted Stock Units F1 -- -- --
holding Restricted Stock Units F1 -- -- --
holding Restricted Stock Units F1 -- -- --
Holdings After Transaction: Preferred shares — 83,399 shares (Direct); Restricted Stock Units — 80,782 contracts (Direct)
Footnotes (1)
  1. F1. The price is denominated in Brazilian reais and has been translated into U.S. dollars at the September 17, 2026 selling rate of R$5.1521 per US$1.00, as reported by the Central Bank of Brazil.
Shares sold 51,800 preferred shares Sale by Executive Vice President on September 17, 2026
Sale price per share $5.09 per preferred share September 17, 2026 insider sale; price translated from Brazilian reais
Shares held after transaction 83,399 preferred shares Direct holdings of Rafael Gamboa Lopes following the September 17, 2026 sale
Exchange rate used R$5.1521 per US$1.00 Rate applied to translate transaction and RSU prices on September 17, 2026
RSU exercise price (2027-02-12 and 2027-02-22) $3.78 per underlying preferred share Restricted stock units with 3,570 and 25,646 underlying shares
RSU underlying shares (2028-02-21) 34,356 underlying preferred shares Restricted stock units expiring February 21, 2028 at $3.56 exercise price
RSU exercise price (2029-02-12) $4.04 per underlying preferred share Restricted stock units with 6,683 underlying preferred shares expiring February 12, 2029
Restricted Stock Units financial
"The insider holds several tranches of Restricted Stock Units linked to 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.
Preferred shares financial
"sold 51,800 preferred shares on September 17, 2026 at $5.09 per share"
Preferred shares are a type of investment that gives investors priority over common shareholders when it comes to receiving dividends and getting their money back if a company is sold or liquidated. Think of them as a safer, more predictable way to earn income from a company's profits, similar to a fixed-return investment, but without voting rights. This makes preferred shares appealing to those seeking stable income with a higher claim on assets than regular stockholders.
exercise price financial
"restricted stock units linked to preferred shares with exercise prices translated from Brazilian reais"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
Central Bank of Brazil financial
"reported by the Central Bank of Brazil"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did GGB report for Executive Vice President Rafael Gamboa Lopes?

GERDAU S.A. reported that Rafael Gamboa Lopes sold 51,800 preferred shares on September 17, 2026, at $5.09 per share, and now directly holds 83,399 preferred shares.

At what price were the GGB preferred shares sold in this Form 4 filing?

The 51,800 GERDAU S.A. preferred shares were sold at $5.09 per share. The filing notes this price was translated from Brazilian reais using an exchange rate of R$5.1521 per US$1.00 as of September 17, 2026.

How many GGB preferred shares does the insider hold after the reported sale?

After the sale, Executive Vice President Rafael Gamboa Lopes directly holds 83,399 preferred shares of GERDAU S.A., as reported in the Form 4 filing for the September 17, 2026 transaction.

Does the GGB Form 4 mention a Rule 10b5-1 trading plan for this sale?

No. The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed and provides no footnote stating that the September 17, 2026 sale was made under a Rule 10b5-1 trading plan.

What restricted stock unit positions linked to GGB preferred shares are reported?

The insider holds several restricted stock units tied to preferred shares, including blocks with 3,570 and 25,646 underlying shares at an exercise price of $3.78, plus additional blocks at $3.56 and $4.04 with expirations between 2027 and 2029.

In what currency were GGB insider transaction prices originally denominated?

The filing states that prices were originally denominated in Brazilian reais and translated into U.S. dollars using the September 17, 2026 selling rate of R$5.1521 per US$1.00, as reported by the Central Bank of Brazil.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Lopes Rafael Gamboa

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

(Street)
SAO PAULOSAO PAULO05425-070

(City)(State)(Zip)

BRAZIL

(Country)
2. Issuer Name and Ticker or Trading Symbol
GERDAU S.A. [ GGB ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
Officer (give title below)XOther (specify below)
Executive Vice President
2a. Foreign Trading Symbol
[GGBR]
3. Date of Earliest Transaction (Month/Day/Year)
09/17/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Preferred shares09/17/2026S51,800D$5.09(1)83,399D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units$3.78(1)02/12/202702/12/2027Preferred shares3,5703,570D
Restricted Stock Units$3.78(1)02/22/202702/22/2027Preferred shares25,64625,646D
Restricted Stock Units$3.56(1)04/01/202704/01/2027Preferred shares5,5405,540D
Restricted Stock Units$3.56(1)02/12/202802/12/2028Preferred shares4,9874,987D
Restricted Stock Units$3.56(1)02/21/202802/21/2028Preferred shares34,35634,356D
Restricted Stock Units$4.04(1)02/12/202902/12/2029Preferred shares6,6836,683D
Explanation of Responses:
1. The price is denominated in Brazilian reais and has been translated into U.S. dollars at the September 17, 2026 selling rate of R$5.1521 per US$1.00, as reported by the Central Bank of Brazil.
/s/Rafael Gamboa Lopes09/21/2026
** 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 4 (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 4: SEC 1474 (03-26)

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