Key facts
- This page summarizes Rafael Gamboa Lopes's Form 4 filing for GERDAU S.A. (GGB).
- 1 reported transaction and 6 derivative rows are listed below.
- Accepted by SEC: 21 Sep 2026, 16:30.
Rafael Gamboa Lopes - 17 Sep 2026 Form 4 Insider Report for GERDAU S.A. (GGB)
- Reporting relationship
- Executive Vice President
- Issuer ticker
- GGB
- Reported as of
- 17 Sep 2026
- Net transaction value
- -$263,662
- SEC form
- 4
- Accepted by SEC
- 21 Sep 2026, 16:30:47 UTC
- Prior SEC filing
- 18 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/Rafael Gamboa Lopes
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Filing notes and source
Key filing fact
Rafael Gamboa Lopes filed Form 4 for GERDAU S.A. (GGB) on 21 Sep 2026.
Change
- Previous filing in this sequence was filed on 18 Mar 2026.
- Current net transaction value: -$263,662.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002120169
Primary reporting owner
Lopes Rafael Gamboa
- Relationship
- Executive Vice President
- Address
- AVENUE DOUTORA RUTH DE CARDOSO, 8501, 8TH FLOOR, PINHEIROS, SAO PAULO
- Signature
- /s/Rafael Gamboa Lopes
- Signature date
- 21 Sep 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
GGB
transaction
Preferred shares
Sale
- Transaction value
- -$263,662
- Shares
- -51,800
- Change %
- -38%
- Price
- $5.09
- Shares after
- 83,399
- Date
- 17 Sep 2026
- Ownership
- Direct
- Footnotes
- F1
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
GGB
holding
Derivative
Restricted Stock Units
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,570
- Date
- 17 Sep 2026
- Ownership
- Direct
- Underlying class
- Preferred shares
- Underlying amount
- 3,570
- Exercise price
- $3.78
- Footnotes
- F1
GGB
holding
Derivative
Restricted Stock Units
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 25,646
- Date
- 17 Sep 2026
- Ownership
- Direct
- Underlying class
- Preferred shares
- Underlying amount
- 25,646
- Exercise price
- $3.78
- Footnotes
- F1
GGB
holding
Derivative
Restricted Stock Units
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,540
- Date
- 17 Sep 2026
- Ownership
- Direct
- Underlying class
- Preferred shares
- Underlying amount
- 5,540
- Exercise price
- $3.56
- Footnotes
- F1
GGB
holding
Derivative
Restricted Stock Units
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 4,987
- Date
- 17 Sep 2026
- Ownership
- Direct
- Underlying class
- Preferred shares
- Underlying amount
- 4,987
- Exercise price
- $3.56
- Footnotes
- F1
GGB
holding
Derivative
Restricted Stock Units
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 34,356
- Date
- 17 Sep 2026
- Ownership
- Direct
- Underlying class
- Preferred shares
- Underlying amount
- 34,356
- Exercise price
- $3.56
- Footnotes
- F1
GGB
holding
Derivative
Restricted Stock Units
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 6,683
- Date
- 17 Sep 2026
- Ownership
- Direct
- Underlying class
- Preferred shares
- Underlying amount
- 6,683
- Exercise price
- $4.04
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote 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.