7 insiders reported 18 Form 4 transactions for GERDAU S.A. (GGB) over the past 18 months (most recent 2026-06-03). Recent activity: Wang Chia Yuan (Insider) Sell 30,935 shares, Metz Mauricio (Insider) Sell 7,000 shares, Peres Cesar Obino da Rosa (Officer) Sell 8,000 shares, Metz Mauricio (Insider) Sell 5,000 shares, Da Cunha Gustavo Werneck (CEO and Board Member) Buy 432,774 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-03 | Wang Chia Yuan | Insider | Sell | 30,935 | $138,898 |
| 2026-06-03 | Metz Mauricio | Insider | Sell | 7,000 | $33,950 |
| 2026-05-22 | Peres Cesar Obino da Rosa | Officer | Sell | 8,000 | $36,800 |
| 2026-05-15 | Metz Mauricio | Insider | Sell | 5,000 | $24,250 |
| 2026-05-12 | Da Cunha Gustavo Werneck | CEO and Board Member | Buy | 432,774 | $0 |
| 2026-05-12 | Da Cunha Gustavo Werneck | CEO and Board Member | Sell | 432,854 | $2.1M |
| 2026-05-08 | Metz Mauricio | Insider | Sell | 2,000 | $9,380 |
| 2026-05-07 | Wang Chia Yuan | Insider | Sell | 40,000 | $190,000 |
| 2026-04-30 | Uhlein Clemir | Insider | Sell | 38,276 | $172,625 |
| 2026-04-30 | Wang Chia Yuan | Insider | Sell | 76,700 | $344,383 |
| 2026-04-30 | Metz Mauricio | Insider | Sell | 1,000 | $4,530 |
| 2026-04-14 | Wang Chia Yuan | Insider | Sell | 25,000 | $105,250 |
| 2026-04-13 | Wahrhaftig Marcos Eduardo Faraco | Insider | Sell | 12,419 | $50,421 |
| 2026-04-10 | Wang Chia Yuan | Insider | Sell | 34,000 | $136,000 |
| 2026-04-10 | Da Cunha Gustavo Werneck | CEO and Board Member | Sell | 50,000 | $200,500 |
| 2026-04-10 | Da Cunha Gustavo Werneck | CEO and Board Member | Sell | 50,000 | $208,000 |
| 2026-03-25 | Johannpeter Guilherme Chagas Gerdau | Insider | Sell | 85,607 | $281,647 |
| 2026-03-24 | Johannpeter Guilherme Chagas Gerdau | Insider | Sell | 85,607 | $281,647 |
Source: SEC Form 4 filings · as of 2026-06-03