GGB
GERDAU S.A. · Manufacturing · Market cap $3.8B(Price slightly stale)
Insiders sold $1.3M net in the last 90 days ·5 sellers, 0 buyers· latest Form 4 filed Sep 25, 2026
Insider Buying
$782K
reported purchases (SEC code P)
Insider Selling
$5.9M
reported sales (SEC code S)
Unique Insiders
12
in the rolling window
Latest filing
Sep 25, 2026
Johannpeter Claudio
GERDAU S.A. (GGB) has 26 SEC Form 4 filings (28 transaction rows) in the rolling window, disclosed by 12 distinct insiders. Most recent filing: Sep 25, 2026.
Inside the rolling window, 12 insiders at GERDAU S.A. reported 1 open-market purchase totaling $782K and 25 open-market sales totaling $5.9M. The most active filer is Insider Wang Chia Yuan with 6 filings. Insiders have net sold $4.8M over the trailing 6 months. The most recent open-market filing is a sale of 85,607 shares by Insider Johannpeter Claudio, dated Sep 23, 2026, worth $423K.
- Industry:Steel
- CEO:Gustavo Werneck Da Cunha
- Employees:30,000
- HQ:São Paulo, SP, BR
- IPO:1999-03-10
| Source | |||||||
|---|---|---|---|---|---|---|---|
Johannpeter ClaudioFirst filing | Vice-Chairman of Board | Sale | 85,607 | $423K | Sep 25 | +8.0% | SEC ↗ |
Lopes Rafael GamboaFirst filing | Executive Vice President | Sale | 51,800 | $264K | Sep 21 | +4.8% | SEC ↗ |
Mattiello Marcos ZillesFirst filing | Senior Management | Sale | 10,387.111 | $53K | Aug 14 | +10.5% | SEC ↗ |
Johannpeter Andre Bier GerdauFirst filing | Chairman of Board of Directors | Sale | 99,200 | $490K | Aug 12 | +8.5% | SEC ↗ |
| VP, CFO and IR Officer | Sale | 10,000 | $51K | Aug 10 | +5.6% | SEC ↗ | |
| CEO and Board Member | Purchase | 165,224 | $782K | Jun 15 | +12.2% | SEC ↗ | |
| Senior Management | Sale | 30,935 | $139K | Jun 3 | +10.3% | SEC ↗ | |
| Executive Vice President | Sale | 7,000 | $34K | Jun 3 | +10.3% | SEC ↗ | |
| Executive Vice President | Sale | 5,000 | $24K | May 28 | +12.7% | SEC ↗ | |
Japur Rafael DornelesFirst filing | VP, CFO and IR Officer | Sale | 5,000 | $24K | May 26 | +12.0% | SEC ↗ |
Peres Cesar Obino da RosaFirst filing | Officer | Sale | 8,000 | $37K | May 22 | — | SEC ↗ |
| Executive Vice President | Sale | 5,000 | $24K | May 15 | — | SEC ↗ | |
| CEO and Board Member | Sale | 432,854 | $2.1M | May 12 | — | SEC ↗ | |
| Executive Vice President | Sale | 2,000 | $9K | May 8 | — | SEC ↗ | |
| Senior management | Sale | 40,000 | $190K | May 7 | — | SEC ↗ | |
| CEO and Board Member | Sale | 88,000 | $396K | May 5 | — | SEC ↗ | |
| Senior management | Sale | 20,000 | $91K | May 4 | — | SEC ↗ | |
| Insider | Sale | 76,700 | $344K | Apr 30 | — | SEC ↗ | |
| Insider | Sale | 1,000 | $5K | Apr 30 | — | SEC ↗ | |
Uhlein ClemirFirst filing | Senior Management | Sale | 38,276 | $173K | Apr 30 | — | SEC ↗ |
| Senior Management | Sale | 25,000 | $105K | Apr 14 | — | SEC ↗ | |
Wahrhaftig Marcos Eduardo FaracoFirst filing | Executive Vice President | Sale | 12,419 | $50K | Apr 13 | — | SEC ↗ |
Wang Chia YuanFirst filing | Senior management | Sale | 34,000 | $136K | Apr 10 | — | SEC ↗ |
Da Cunha Gustavo WerneckFirst filing | CEO and Board Member | Sale | 50,000 | $201K | Apr 10 | — | SEC ↗ |
Da Cunha Gustavo WerneckFirst filing | CEO and Board Member | Sale | 50,000 | $208K | Apr 10 | — | SEC ↗ |
Earnings: last 7 quarters
Frequently asked questions
How many SEC Form 4 insider filings does GGB have?
GERDAU S.A. (GGB) has 26 SEC Form 4 filings (28 transaction rows) in the rolling 365-day window, disclosed by 12 distinct insiders. Most recent filing: Sep 25, 2026.
When was the most recent SEC Form 4 filing for GGB?
The most recent Form 4 filing for GGB on Tracefour is dated Sep 25, 2026.
Who is the most active insider at GGB?
The most active SEC Form 4 filer at GGB in the rolling window is Insider Wang Chia Yuan, with 6 filings.
What is the net insider flow at GGB over the last 6 months?
Over the trailing 180 days, insiders at GGB have net sold $4.8M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at GGB in the current window?
Inside the rolling window, insiders at GGB bought $782K and sold $5.9M based on SEC Form 4 filings.
Can I get alerts for GGB insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at GERDAU S.A. (GGB). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
GERDAU S.A. is in the Manufacturing sector.