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% |
Reported at this company — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.