Company · CIK 0001073404 · SIC 3310 — Steel Works, Blast Furnaces & Rolling & Finishing Mills · NYSE
GERDAU S.A. · GGB
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 23, 2026 SForm 4 → | Sep 25, 4:32 pm EDT | Claudio JohannpeterOther | 85,607 | $4.94 | $422,899 | 0 | −100% | |
| Sep 17, 2026 SForm 4 → | Sep 21, 4:30 pm EDT | Rafael Gamboa LopesOther | 51,800 | $5.09 | $263,662 | 83,399 | −38.3% | |
| Aug 10, 2026 SForm 4 → | Aug 12, 4:46 pm EDT | Andre Bier Gerdau JohannpeterOther | 99,200 | $4.94 | $490,048 | 247,380 | −28.6% | |
| Aug 6, 2026 SForm 4 → | Aug 10, 4:16 pm EDT | Rafael Dorneles JapurOther | 10,000 | $5.10 | $51,000 | 86,967 | −10.3% | |
| Jun 12, 2026 PForm 4 → | Jun 15, 4:39 pm EDT | Gustavo Werneck Da CunhaCEO and Board Member | 165,224 | $4.73 | $781,510 | 165,224 | — | |
| Jun 8, 2026 SForm 4 → | Aug 14, 8:55 am EDT | Marcos Zilles MattielloOther | 10,387 | $5.11 | $53,078 | 0 | −100% | late |
| Jun 2, 2026 SForm 4 → | Jun 3, 4:54 pm EDT | Chia Yuan WangOther | 30,935 | $4.49 | $138,898 | 0 | −100% | |
| Jun 2, 2026 SForm 4 → | Jun 3, 4:27 pm EDT | Mauricio MetzOther | 7,000 | $4.85 | $33,950 | 22,536 | −23.7% |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 15, 2026 AForm 4 → | Aug 27, 5:00 pm EDT | Marcos Eduardo Faraco WahrhaftigOther | 107,749 | $3.75 | $404,059 | 107,749 | — | late |