Lopes Rafael Gamboa sold $264K of GGB
Lopes Rafael Gamboa sold 51,800 shares of GERDAU S.A. (GGB) at $5.09 ($0.26M total) on 2026-09-17.
How this was made
The 30-second read
Why it matters
The insider sale is a standard disclosure with modest size; traders may monitor for further insider activity.
Market read
Provides a fresh primary source of insider selling; limited trading relevance.
What to watch
Potential upcoming corporate actions or personal liquidity needs not disclosed.
Background
GERDAU S.A. (ticker GGB) is a major steel producer listed on the NYSE.
Ticker impact
Insider Lopes Rafael Gamboa sold 51,800 shares of GERDAU S.A. for $263,662 on Sep 17, 2026.
Minor downward pressure on GGB price in the short term.
Form 4 filings are primary sources; the transaction size is modest relative to market cap, so impact is limited.
Market effects
None significant; the sale is company‑specific.
No broader regional effect.
Limited to investors tracking insider activity.
Counterpoint
The sale may be routine portfolio rebalancing, not a negative signal.
Key entities
- InsiderLopes Rafael Gamboa
Reporter of the Form 4 transaction.
- CompanyGERDAU S.A.
Issuer of the shares sold.

