Gerdau S.A., together with its subsidiaries, operates as a steel producer company. It operates through Brazil Business, North America Business, and South America Business segments. The company offers rebars, bars, wires, thick plates, hot rolled coils, billets, blooms, plates, wire rods, and structural profiles. It also provides special steel products for agricultural, automotive, construction, distribution, energy, industrial, and mining markets.

In addition, it operates mines that produce iron ore located in Brazil. The company was founded in 1901 and is headquartered in São Paulo, Brazil.

Insider Transactions

Open-market activity and option exercises

Insider Activity Summary

Insider trading activity for Gerdau S.A. (GGB) between Mar 20, 2026 and Sep 23, 2026 consists of 28 total transactions. Among these, company executives and board members conducted 14 buys (totaling 470,941 shares) and 14 sells (totaling 1,187,979 shares). This activity resulted in a net change of -717,038 shares, reflecting net selling pressure with an estimated net acquisitions value of $477.56M.

28 insider transactions found. Showing 10 of 28 transactions.

Show:entries

Insider Name	Relation to Company	Shares Changed	Price	Transaction Date
Johannpeter Claudio	Vice-Chairman of Board	-85,607	$4.94	Sep 23, 2026
Lopes Rafael Gamboa	Executive Vice President	-51,800	$5.09	Sep 17, 2026
Unknown Insider	Insider	-99,200	$4.94	Aug 10, 2026
Unknown Insider	CEO and Board Member	165,224	$4.73	Jun 12, 2026
MATTIELLO MARCOS ZILLES	Unknown	10,387	$0.05	Jun 8, 2026
METZ MAURICIO	Executive Vice President	7,000	$33950.00	Jun 2, 2026
WANG CHIA YUAN	Other Executive	30,935	$0.14	Jun 2, 2026
Unknown Insider	Insider	-30,935	$4.49	Jun 2, 2026
JAPUR RAFAEL DORNELES	Chief Financial Officer	5,000	$23750.00	May 22, 2026
METZ MAURICIO	Executive Vice President	5,000	$24250.00	May 13, 2026

Page 1 of 3 (28 total transactions)

Explore More Analysis for GGB

Additional research, tools, and technical breakdowns

Stock Analyzer Report

Deep-dive automated research and stock rating report.

DCF Fair Value Calculator

Discounted cash flow model and intrinsic value projection.

AI Price Predictions

Multi-scenario price predictions and consensus targets.

Insider Activity Tracker

Track buying/selling behavior of corporate insiders.

Earnings Calendar

Track upcoming and historical corporate earnings reports.

Market Insights & Research

Read the latest analysis articles and expert research.

Analysis Tools

→ Run GGB Stock Analyzer → GGB DCF Fair Value Calculator → GGB Algorithmic Stock Forecast → Earnings Calendar → Insider Activity Tracker

Insights & Resources

→ Latest Market Insights & Research → Market News & Bulletins → How Tickzen Forecasting Works → Frequently Asked Questions

Gerdau S.A.(GGB)Company Profile & BusinessNYSE

Business, leadership and ownership

Company Profile

Business Overview