GGB insider transaction filings
GERDAU S.A. — 26 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-09-21. Screen GGB transaction legs live →
Insider transaction summary — last 90 days
2026-06-25 to 2026-09-23, from the filings listed below: 5 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 4 legs across 4 filings by 4 insiders — 171,387 shares, $857,788 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 1.
- Largest priced transaction: sale of 99,200 shares @ $4.94 ($490,048) by Johannpeter Andre Bier Gerdau, filed 2026-08-12.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Johannpeter Andre Bier Gerdau | 1 | — | 1 leg · 99,200 sh · $490,048 | — |
| Lopes Rafael Gamboa | 1 | — | 1 leg · 51,800 sh · $263,662 | — |
| Mattiello Marcos Zilles | 1 | — | 1 leg · 10,387 sh · $53,078 | — |
| Japur Rafael Dorneles | 1 | — | 1 leg · 10,000 sh · $51,000 | — |
| Wahrhaftig Marcos Eduardo Faraco | 1 | — | — | 1 |
Recent Form 4 filings — GERDAU S.A.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-21 | 4 | Lopes Rafael Gamboa | Sale (S): 51,800 @ $5.09 | EDGAR |
| 2026-08-27 | 4 | Wahrhaftig Marcos Eduardo Faraco | Grant/award (A): 107,749 (derivative) @ $3.75 | EDGAR |
| 2026-08-14 | 4 | Mattiello Marcos Zilles | Sale (S): 10,387.11 @ $5.11 | EDGAR |
| 2026-08-12 | 4 | Johannpeter Andre Bier Gerdau | Sale (S): 99,200 @ $4.94 | EDGAR |
| 2026-08-10 | 4 | Japur Rafael Dorneles | Sale (S): 10,000 @ $5.10 | EDGAR |
| 2026-06-15 | 4 | Da Cunha Gustavo Werneck — CEO and Board Member | Purchase (P): 165,224 @ $4.73 | EDGAR |
| 2026-06-03 | 4 | Metz Mauricio | Sale (S): 7,000 @ $4.85 | EDGAR |
| 2026-06-03 | 4 | Wang Chia Yuan | Sale (S): 30,935 @ $4.49 | EDGAR |
| 2026-05-28 | 4 | Metz Mauricio | Sale (S): 5,000 @ $4.70 | EDGAR |
| 2026-05-26 | 4 | Japur Rafael Dorneles | Sale (S): 5,000 @ $4.75 | EDGAR |
| 2026-05-22 | 4 | Peres Cesar Obino da Rosa — Officer | Sale (S): 8,000 @ $4.60 | EDGAR |
| 2026-05-15 | 4 | Metz Mauricio | Sale (S): 5,000 @ $4.85 | EDGAR |
| 2026-05-12 | 4 | Da Cunha Gustavo Werneck — CEO and Board Member | Grant/award (A): 432,774 @ $0 · Sale (S): 432,854 @ $4.87 | EDGAR |
| 2026-05-08 | 4 | Metz Mauricio | Sale (S): 2,000 @ $4.69 | EDGAR |
| 2026-05-07 | 4 | Wang Chia Yuan | Sale (S): 40,000 @ $4.75 | EDGAR |
| 2026-05-05 | 4 | Da Cunha Gustavo Werneck — CEO and Board Member | Sale (S): 88,000 @ $4.50 | EDGAR |
| 2026-05-04 | 4 | Wang Chia Yuan | Sale (S): 20,000 @ $4.54 | EDGAR |
| 2026-04-30 | 4 | Metz Mauricio | Sale (S): 1,000 @ $4.53 | EDGAR |
| 2026-04-30 | 4 | Wang Chia Yuan | Sale (S): 76,700 @ $4.49 | EDGAR |
| 2026-04-30 | 4 | Uhlein Clemir | Sale (S): 38,276 @ $4.51 | EDGAR |
| 2026-04-14 | 4 | Wang Chia Yuan | Sale (S): 25,000 @ $4.21 | EDGAR |
| 2026-04-13 | 4 | Wahrhaftig Marcos Eduardo Faraco | Sale (S): 12,419 @ $4.06 | EDGAR |
| 2026-04-10 | 4 | Da Cunha Gustavo Werneck — CEO and Board Member | Sale (S): 50,000 @ $4.01 · Sale (S): 50,000 @ $4.16 | EDGAR |
| 2026-04-10 | 4 | Wang Chia Yuan | Sale (S): 34,000 @ $4 | EDGAR |
| 2026-03-25 | 4/A | Johannpeter Guilherme Chagas Gerdau | Sale (S): 85,607 @ $3.29 | EDGAR |
| 2026-03-24 | 4 | Johannpeter Guilherme Chagas Gerdau | Sale (S): 85,607 @ $3.29 | EDGAR |
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