Gerdau S.A. ADR (GGB): Congress and insider trades
Who in Congress and inside the company traded GGB, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Gerdau S.A. ADR (GGB) is a listed stock on NYSE.
- Insiders filed 1 open market buy worth $782K and 21 sells worth $3.4M, the latest filed 2026-09-25 (25 September 2026).
- Across 1 scored buy, Insiders averaged +5.3% against the S&P 500 (SPY) over the 90 days after disclosure, with 100% of them ahead of the index. That result is too few trades to tell.
- Data as of 2026-09-29 (29 September 2026).
Insider trades in GGB
as of 2026-09-25| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 25 Sep 2026 | Johannpeter Claudio | sell | 85,607 | $4.94 | $423K | n/a |
| 14 Aug 2026 | Mattiello Marcos Zilles | sell | 10,387 | $5.11 | $53.1K | n/a |
| 12 Aug 2026 | Johannpeter Andre Bier Gerdau | sell | 99,200 | $4.94 | $490K | n/a |
| 10 Aug 2026 | Japur Rafael Dorneles | sell | 10,000 | $5.10 | $51.0K | n/a |
| 15 Jun 2026 | Da Cunha Gustavo Werneck | buy | 165,224 | $4.73 | $782K | +5.3% |
| 3 Jun 2026 | Metz Mauricio | sell | 7,000 | $4.85 | $34.0K | n/a |
| 3 Jun 2026 | Wang Chia Yuan | sell | 30,935 | $4.49 | $139K | n/a |
| 26 May 2026 | Japur Rafael Dorneles | sell | 5,000 | $4.75 | $23.8K | n/a |
| 22 May 2026 | Peres Cesar Obino da Rosa | sell | 8,000 | $4.60 | $36.8K | n/a |
| 7 May 2026 | Wang Chia Yuan | sell | 40,000 | $4.75 | $190K | n/a |
| 5 May 2026 | Da Cunha Gustavo Werneck | sell | 88,000 | $4.50 | $396K | n/a |
| 4 May 2026 | Wang Chia Yuan | sell | 20,000 | $4.54 | $90.8K | n/a |
| 30 Apr 2026 | Metz Mauricio | sell | 1,000 | $4.53 | $4.5K | n/a |
| 30 Apr 2026 | Uhlein Clemir | sell | 38,276 | $4.51 | $173K | n/a |
| 30 Apr 2026 | Wang Chia Yuan | sell | 76,700 | $4.49 | $344K | n/a |
| 14 Apr 2026 | Metz Mauricio | sell | 1,000 | $4.24 | $4.2K | n/a |
| 14 Apr 2026 | Wang Chia Yuan | sell | 25,000 | $4.21 | $105K | n/a |
| 13 Apr 2026 | Wahrhaftig Marcos Eduardo Fara | sell | 12,419 | $4.06 | $50.4K | n/a |
| 10 Apr 2026 | Wang Chia Yuan | sell | 34,000 | $4.00 | $136K | n/a |
| 10 Apr 2026 | Da Cunha Gustavo Werneck | sell | 50,000 | $4.01 | $201K | n/a |
| 10 Apr 2026 | Da Cunha Gustavo Werneck | sell | 50,000 | $4.16 | $208K | n/a |
| 24 Mar 2026 | Johannpeter Guilherme Chagas G | sell | 85,607 | $3.29 | $282K | n/a |
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Frequently asked questions
Who has bought GGB?
0 Congress buys by 0 members and 1 insider buy are on file. The tables on this page list every one.
Did buying GGB after a disclosure beat the market?
Across 1 scored buy, Insiders averaged +5.3% against the S&P 500 (SPY) over the 90 days after disclosure, with 100% of them ahead of the index. That result is too few trades to tell. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.