GERDAU S.A. (GGB)
$4.63-$0.07 (-1.38%) Today
Cunha Gustavo Werneck da - Officer
Chia Yuan Wang
Mauricio MetzMauricio MetzGerdau SA produces steel and steel products. The company operates in civil construction, agriculture, automotive, iron ore, exports, research and development, and home steel products sectors. It offers products such as Semi-finished products (Billets, Blooms and Slabs), Special bar quality, Common Long Rolled Products, Dawn products, Merchant bar, Beams, Rebar, Piling, Iron Ore and Others. The company's geographical segment includes Brazil Segment; North America Segment; and South America Segment. It derives the majority of its revenue from the Brazil Operations segment, which includes the long, flat and special steel operations and the iron ore operation located in Brazil and joint ventures and associated companies located in Brazil.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 1 | 165,224 | $782K |
| Open-market sale | 5 | 157,522 | $767K |
| Grant or award | 1 | 107,749 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
23 Form 4 filings on record, the earliest from Mar 24, 2026, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
 Marcos Eduardo Faraco Wahrhaftig | Grant or award | Restricted Stock Units | 107,749 | $3.75 | $404K | |
| Marcos Zilles Mattiello | Open-market sale | Preferred shares | 10,387 | $5.11 | $53K | |
| Andre Bier Gerdau Johannpeter | Open-market sale | Preferred shares | 99,200 | $4.94 | $490K | |
| Rafael Dorneles Japur | Open-market sale | Preferred shares | 10,000 | $5.10 | $51K | |
| Cunha Gustavo Werneck da - Officer | Open-market purchase | Preferred shares | 165,224 | $4.73 | $782K | |
| Chia Yuan Wang | Open-market sale | Preferred shares | 30,935 | $4.49 | $139K | |
| Mauricio Metz | Open-market sale | Preferred shares | 7,000 | $4.85 | $34K | |
| Mauricio Metz | Open-market sale | Preferred shares | 5,000 | $4.70 | $24K | |
| Rafael Dorneles Japur | Open-market sale | Preferred shares | 5,000 | $4.75 | $24K | |
| Cesar Obino da Rosa Peres - Officer | Open-market sale | Preferred shares | 8,000 | $4.60 | $37K | |
| Mauricio Metz | Open-market sale | Preferred shares | 5,000 | $4.85 | $24K | |
| Cunha Gustavo Werneck da - Officer | Grant or award | Preferred shares | 432,774 | $0.00 | - | |
| Cunha Gustavo Werneck da - Officer | Open-market sale | Preferred shares | 432,854 | $4.87 | $2.11M | |
| Mauricio Metz | Open-market sale | Preferred shares | 2,000 | $4.69 | $9K | |
| Chia Yuan Wang | Open-market sale | Preferred shares | 40,000 | $4.75 | $190K | |
| Cunha Gustavo Werneck da - Officer | Open-market sale | Preferred shares | 88,000 | $4.50 | $396K | |
| Chia Yuan Wang | Open-market sale | Preferred shares | 20,000 | $4.54 | $91K | |
| Mauricio Metz | Open-market sale | Preferred shares | 1,000 | $4.24 | $4K | |
| Chia Yuan Wang | Open-market sale | Preferred shares | 25,000 | $4.21 | $105K | |
| Marcos Eduardo Faraco Wahrhaftig | Open-market sale | Preferred shares | 12,419 | $4.06 | $50K | |
| Cunha Gustavo Werneck da - Officer | Open-market sale | Preferred shares | 50,000 | $4.01 | $201K | |
| Cunha Gustavo Werneck da - Officer | Open-market sale | Preferred shares | 50,000 | $4.16 | $208K | |
| Chia Yuan Wang | Open-market sale | Preferred shares | 34,000 | $4.00 | $136K | |
 Guilherme Chagas Gerdau Johannpeter | Open-market sale | Preferred shares | 85,607 | $3.29 | $282K | |
| Guilherme Chagas Gerdau Johannpeter | Open-market sale | Preferred shares | 85,607 | $3.29 | $282K |
GERDAU S.A. (GGB) had 7 insider filings in the last 90 days, with the most recent on 2026-08-27. The full record for GGB runs to 23 Form 4 filings, the earliest from 2026-03-24. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
1 insider purchase of GGB was filed in the last 90 days, totaling $782K.
5 insider sales of GGB were filed in the last 90 days, totaling $767K.
This page tracks GGB Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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