GGBGERDAU S.A.
- Market cap
- $10.00B
- as of 2026-10-23
- Latest close
- $5.10
- as of 2026-10-23
- Sector
- Basic Materials
- as of 2026-10-24
- Industry
- Steel
- as of 2026-10-24
Cluster
No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).
Form 4 historysince 2026-03-25
Dashed line = amended filing (Form 4/A)
| Insider | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Johannpeter Claudio | Sep 23 | Sep 25 | S | 85,607 | $4.94 | Sale −$422,899 | not reported | No | Form 4 |
| Lopes Rafael Gamboa | Sep 17 | Sep 21 | S | 51,800 | $5.09 | Sale −$263,662 | 83,399 | No | Form 4 |
| Wahrhaftig Marcos Eduardo Faraco | Jul 15 | Aug 27 | A · derivative | 107,749 | $3.75 | $404,059 | 107,749 | No | Form 4 |
| Mattiello Marcos Zilles | Jun 8 | Aug 14 | S | 10,387.11 | $5.11 | Sale −$53,078 | not reported | No | Form 4 |
| Johannpeter Andre Bier Gerdau | Aug 10 | Aug 12 | S | 99,200 | $4.94 | Sale −$490,048 | 247,380 | No | Form 4 |
| Japur Rafael Dorneles | Aug 6 | Aug 10 | S | 10,000 | $5.10 | Sale −$51,000 | 86,967 | No | Form 4 |
| Da Cunha Gustavo WerneckCEO and Board Member | Jun 12 | Jun 15 | P | 165,224 | $4.73 | Purchase +$781,510 | 165,224 | No | Form 4 |
| Wang Chia Yuan | Jun 2 | Jun 3 | S | 30,935 | $4.49 | Sale −$138,898 | not reported | No | Form 4 |
| Metz Mauricio | Jun 2 | Jun 3 | S | 7,000 | $4.85 | Sale −$33,950 | 22,536 | No | Form 4 |
| Metz Mauricio | May 26 | May 28 | S | 5,000 | $4.70 | Sale −$23,500 | 29,536 | No | Form 4 |
| Japur Rafael Dorneles | May 22 | May 26 | S | 5,000 | $4.75 | Sale −$23,750 | 96,967 | No | Form 4 |
| Peres Cesar Obino da RosaOfficer | May 19 | May 22 | S | 8,000 | $4.60 | Sale −$36,800 | 8 | No | Form 4 |
| Metz Mauricio | May 13 | May 15 | S | 5,000 | $4.85 | Sale −$24,250 | 34,536 | No | Form 4 |
| Da Cunha Gustavo WerneckCEO and Board Member | May 8 | May 12 | A | 432,774 | $0.00 | $0 | 432,854 | No | Form 4 |
| Da Cunha Gustavo WerneckCEO and Board Member | May 8 | May 12 | S | 432,854 | $4.87 | Sale −$2,107,999 | not reported | No | Form 4 |
| Metz Mauricio | May 5 | May 8 | S | 2,000 | $4.69 | Sale −$9,380 | 39,536 | No | Form 4 |
| Wang Chia Yuan | May 5 | May 7 | S | 40,000 | $4.75 | Sale −$190,000 | 32,195 | No | Form 4 |
| Da Cunha Gustavo WerneckCEO and Board Member | Apr 28 | May 5 | S | 88,000 | $4.50 | Sale −$396,000 | 80 | No | Form 4 |
| Wang Chia Yuan | Apr 30 | May 4 | S | 20,000 | $4.54 | Sale −$90,800 | 72,195 | No | Form 4 |
| Uhlein Clemir | Apr 28 | Apr 30 | S | 38,276 | $4.51 | Sale −$172,625 | not reported | No | Form 4 |
| Wang Chia Yuan | Apr 28 | Apr 30 | S | 76,700 | $4.49 | Sale −$344,383 | 92,195 | No | Form 4 |
| Metz Mauricio | Apr 28 | Apr 30 | S | 1,000 | $4.53 | Sale −$4,530 | 41,536 | No | Form 4 |
| Wang Chia Yuan | Apr 10 | Apr 14 | S | 25,000 | $4.21 | Sale −$105,250 | 168,895 | No | Form 4 |
| Metz Mauricio | Apr 10 | Apr 14 | S | 1,000 | $4.24 | Sale −$4,240 | 42,536 | No | Form 4 |
| Wahrhaftig Marcos Eduardo Faraco | Apr 9 | Apr 13 | S | 12,419 | $4.06 | Sale −$50,421 | not reported | No | Form 4 |
| Da Cunha Gustavo WerneckCEO and Board Member | Apr 9 | Apr 10 | S | 50,000 | $4.16 | Sale −$208,000 | 88,080 | No | Form 4 |
| Wang Chia Yuan | Apr 8 | Apr 10 | S | 34,000 | $4.00 | Sale −$136,000 | 193,895 | No | Form 4 |
| Da Cunha Gustavo WerneckCEO and Board Member | Apr 8 | Apr 10 | S | 50,000 | $4.01 | Sale −$200,500 | 138,080 | No | Form 4 |
| Johannpeter Guilherme Chagas Gerdau | Mar 20 | Mar 254/A | S | 85,607 | $3.29 | Sale −$281,647 | not reported | No | Form 4/A |