GERDAU (GGB) stock: insider trades, news & valuation
Net sellingShare price and insider trades
GERDAU insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $782K and 12 sold $6.1M of GGB stock on the open market.
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GGB insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $1.2M | 4 |
| Q2 2026 | $782K | 1 | $4.4M | 21 |
| Q1 2026 | — | 0 | $563K | 2 |
Valuation, profit and volume
Summary
Over the past 12 months, 1 GERDAU S.A. insider reported open-market purchases totaling $782K, while 12 insiders reported sales totaling $6.1M. 0 of 27 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 25SEC | Claudio JohannpeterChair | Sell | 85,607 | $4.94 | $423K | +3.6% | — |
| Sep 21SEC | Rafael Gamboa LopesPresident | Sell | 51,80083,399 held (−38%) | $5.09 | $264K | +0.6% | — |
| Aug 14SEC | Marcos Zilles MattielloSenior Management | Sell | 10,387 | $5.11 | $53K | +0.2% | — |
| Aug 12SEC | Andre Bier Gerdau JohannpeterChair | Sell | 99,200247,380 held (−29%) | $4.94 | $490K | +3.6% | — |
| Aug 10SEC | Rafael Dorneles JapurCFO | Sell | 10,00086,967 held (−10%) | $5.10 | $51K | +0.4% | — |
| Jun 15SEC | Cunha Gustavo Werneck DaCEO | Buy | 165,224new position | $4.73 | $782K | +8.2% | — |
| Jun 3SEC | Chia Yuan WangSenior Management | Sell | 30,935 | $4.49 | $139K | +14.0% | — |
| Jun 3SEC | Mauricio MetzPresident | Sell | 7,00022,536 held (−24%) | $4.85 | $34K | +5.6% | — |
| May 28SEC | Mauricio MetzPresident | Sell | 5,00029,536 held (−14%) | $4.70 | $24K | +8.9% | — |
| May 26SEC | Rafael Dorneles JapurCFO | Sell | 5,00096,967 held (−5%) | $4.75 | $24K | +7.8% | — |
| May 22SEC | Cesar Obino Da Rosa PeresOfficer | Sell | 8,0008 held (−100%) | $4.60 | $37K | +11.3% | — |
| May 15SEC | Mauricio MetzPresident | Sell | 5,00034,536 held (−13%) | $4.85 | $24K | +5.6% | — |
| May 12SEC | Cunha Gustavo Werneck DaCEO | Sell | 432,854 | $4.87 | $2.1M | +5.1% | — |
| May 8SEC | Mauricio MetzPresident | Sell | 2,00039,536 held (−5%) | $4.69 | $9K | +9.2% | — |
| May 7SEC | Chia Yuan WangSenior Management | Sell | 40,00032,195 held (−55%) | $4.75 | $190K | +7.8% | — |
| May 5SEC | Cunha Gustavo Werneck DaCEO | Sell | 88,00080 held (−100%) | $4.50 | $396K | +13.8% | — |
| May 4SEC | Chia Yuan WangSenior Management | Sell | 20,00072,195 held (−22%) | $4.54 | $91K | +12.8% | — |
| Apr 30SEC | Chia Yuan WangSenior Management | Sell | 76,70092,195 held (−45%) | $4.49 | $344K | +14.0% | — |
| Apr 30SEC | Clemir UhleinSenior Management | Sell | 38,276 | $4.51 | $173K | +13.5% | — |
| Apr 30SEC | Mauricio MetzPresident | Sell | 1,00041,536 held (−2%) | $4.53 | $5K | +13.0% | — |
| Apr 14SEC | Chia Yuan WangSenior Management | Sell | 25,000168,895 held (−13%) | $4.21 | $105K | +21.6% | — |
| Apr 14SEC | Mauricio MetzPresident | Sell | 1,00042,536 held (−2%) | $4.24 | $4K | +20.8% | — |
| Apr 13SEC | Marcos Eduardo Faraco WahrhaftigPresident | Sell | 12,419 | $4.06 | $50K | +26.1% | — |
| Apr 10SEC | Cunha Gustavo Werneck DaCEO | Sell | 50,00088,080 held (−36%) | $4.16 | $208K | +23.1% | — |
| Apr 10SEC | Cunha Gustavo Werneck DaCEO | Sell | 50,000138,080 held (−27%) | $4.01 | $200K | +27.7% | — |
| Apr 10SEC | Chia Yuan WangSenior Management | Sell | 34,000193,895 held (−15%) | $4.00 | $136K | +28.0% | — |
| Mar 25SEC | Guilherme Chagas Gerdau JohannpeterChair | Sell | 85,607 | $3.29 | $282K | +55.6% | — |
| Mar 24SEC | Guilherme Chagas Gerdau JohannpeterChair | Sell | 85,607 | $3.29 | $282K | +55.6% | — |
Insiders at GERDAU S.A.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Cunha Gustavo Werneck DaCEO | $782K | $2.9M | Jun 15, 2026 | — |
| Chia Yuan WangSenior Management | — | $1.0M | Jun 3, 2026 | — |
| Guilherme Chagas Gerdau JohannpeterChair | — | $563K | Mar 25, 2026 | — |
| Andre Bier Gerdau JohannpeterChair | — | $490K | Aug 12, 2026 | — |
| Claudio JohannpeterChair | — | $423K | Sep 25, 2026 | — |
| Rafael Gamboa LopesPresident | — | $264K | Sep 21, 2026 | — |
| Clemir UhleinSenior Management | — | $173K | Apr 30, 2026 | — |
| Mauricio MetzPresident | — | $100K | Jun 3, 2026 | — |
| Rafael Dorneles JapurCFO | — | $75K | Aug 10, 2026 | — |
| Marcos Zilles MattielloSenior Management | — | $53K | Aug 14, 2026 | — |
| Marcos Eduardo Faraco WahrhaftigPresident | — | $50K | Apr 13, 2026 | — |
| Cesar Obino Da Rosa PeresOfficer | — | $37K | May 22, 2026 | — |
GGB stock: common questions
Are GERDAU S.A. insiders buying GGB stock?
In the past 12 months, 1 insiders reported open-market purchases of GGB worth $782K. The latest was CEO Cunha Gustavo Werneck Da bought $782K of GGB at $4.73 — first open-market purchase in our records; opens a new position.
Are GERDAU S.A. insiders selling GGB stock?
12 insiders reported sales worth $6.1M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is GGB's 52-week range?
Over the past year GGB has traded between $3.08 and $5.17. It last closed at $5.12 on Oct 9, 2026.