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Gerdau S.A. (New York Stock Exchange:GGB)
BR · Delayed Price · Currency is USD
Basic Materials · Steel
4.76-0.34 (-6.57%)
Insider Score
––Not scored
GGB Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
GGB Stock Insider Trading Activity
GGB stock’s insider trading shows 1 purchase for an estimated $781.51K and 19 sales on the open market for an estimated $4.88M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$0 bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Johannpeter Claudio Other | Sell | 85,607 | $4.94 | $422.90K | 100% | 0 | Sep 23, 2026 | — | Form 4 |
| Lopes Rafael Gamboa Other | Sell | 51,800 | $5.09 | $263.66K | 38.3% | 83,399 | Sep 17, 2026 | — | Form 4 |
| Johannpeter Andre Bier Gerdau Other | Sell | 99,200 | $4.94 | $490.05K | 28.6% | 247,380 | Aug 10, 2026 | — | Form 4 |
| Japur Rafael Dorneles Other | Sell | 10,000 | $5.10 | $51.00K | 10.3% | 86,967 | Aug 6, 2026 | — | Form 4 |
| Da Cunha Gustavo Werneck CEO | Buy | 165,224 | $4.73 | $781.51K | New | 165,224 | Jun 12, 2026 | AFirst BuyCEO Buy | Form 4 |
| Mattiello Marcos Zilles Other | Sell | 10,387 | $5.11 | $53.08K | 100% | 0 | Jun 8, 2026 | — | Form 4 |
| Metz Mauricio Other | Sell | 7,000 | $4.85 | $33.95K | 23.7% | 22,536 | Jun 2, 2026 | — | Form 4 |
| Wang Chia Yuan Other | Sell | 30,935 | $4.49 | $138.90K | 100% | 0 | Jun 2, 2026 | — | Form 4 |
| Metz Mauricio Other | Sell | 5,000 | $4.70 | $23.50K | 14.5% | 29,536 | May 26, 2026 | — | Form 4 |
| Japur Rafael Dorneles Other | Sell | 5,000 | $4.75 | $23.75K | 4.9% | 96,967 | May 22, 2026 | — | Form 4 |
| Peres Cesar Obino da Rosa Other | Sell | 8,000 | $4.60 | $36.80K | 99.9% | 8 | May 19, 2026 | — | Form 4 |
| Metz Mauricio Other | Sell | 5,000 | $4.85 | $24.25K | 12.6% | 34,536 | May 13, 2026 | — | Form 4 |
| Da Cunha Gustavo Werneck CEO | Sell | 432,854 | $4.87 | $2.11M | 100% | 0 | May 8, 2026 | — | Form 4 |
| Da Cunha Gustavo Werneck CEO | Award | 432,774 | — | — | 540968% | 432,854 | May 8, 2026 | — | Form 4 |
| Wang Chia Yuan Other | Sell | 40,000 | $4.75 | $190.00K | 55.4% | 32,195 | May 5, 2026 | — | Form 4 |
| Metz Mauricio Other | Sell | 2,000 | $4.69 | $9.38K | 4.8% | 39,536 | May 5, 2026 | — | Form 4 |
| Wang Chia Yuan Other | Sell | 20,000 | $4.54 | $90.80K | 21.7% | 72,195 | Apr 30, 2026 | — | Form 4 |
| Wang Chia Yuan Other | Sell | 76,700 | $4.49 | $344.38K | 45.4% | 92,195 | Apr 28, 2026 | — | Form 4 |
| Uhlein Clemir Other | Sell | 38,276 | $4.51 | $172.62K | 100% | 0 | Apr 28, 2026 | — | Form 4 |
| Da Cunha Gustavo Werneck CEO | Sell | 88,000 | $4.50 | $396.00K | 99.9% | 80 | Apr 28, 2026 | — | Form 4 |
| Metz Mauricio Other | Sell | 1,000 | $4.53 | $4.53K | 2.4% | 41,536 | Apr 28, 2026 | — | Form 4 |
| Wang Chia Yuan Other | Sell | 25,000 | $4.21 | $105.25K | 12.9% | 168,895 | Apr 10, 2026 | — | Form 4 |
| Metz Mauricio Other | Sell | 1,000 | $4.24 | $4.24K | 2.3% | 42,536 | Apr 10, 2026 | — | Form 4 |
| Wahrhaftig Marcos Eduardo Faraco Other | Sell | 12,419 | $4.06 | $50.42K | 100% | 0 | Apr 9, 2026 | — | Form 4 |
| Da Cunha Gustavo Werneck CEO | Sell | 50,000 | $4.16 | $208.00K | 36.2% | 88,080 | Apr 9, 2026 | — | Form 4 |
| Wang Chia Yuan Other | Sell | 34,000 | $4.00 | $136.00K | 14.9% | 193,895 | Apr 8, 2026 | — | Form 4 |
| Da Cunha Gustavo Werneck CEO | Sell | 50,000 | $4.01 | $200.50K | 26.6% | 138,080 | Apr 8, 2026 | — | Form 4 |
| Johannpeter Guilherme Chagas Gerdau Other | Sell | 85,607 | $3.29 | $281.65K | 100% | 0 | Mar 20, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.