Insider trading

Period: 12 months Stock: GGB + Add filter Clear all
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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

27 decisions over 12 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

27 decisions over 12 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

27 decisions over 12 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

27 decisions over 12 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
27 decisions over 12 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
27 decisions over 12 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

27 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
23 Sep 2026
Johannpeter Claudio Vice-Chairman of Board
Sold at will
$422.90K 85,607 at 4.94
100%
Sold half or more
17 Sep 2026
Lopes Rafael Gamboa Executive Vice President
Sold at will
$263.66K 51,800 at 5.09
38.3%
Not planned
10 Aug 2026
Johannpeter Andre Bier Gerdau Chairman of Board of Directors
Sold at will
$490.05K 99,200 at 4.94
28.6%
Not planned
6 Aug 2026
Japur Rafael Dorneles VP, CFO and IR Officer
Sold at will
$51.00K 10,000 at 5.10
10.3%
Not planned
12 Jun 2026
Da Cunha Gustavo Werneck CEO and Board Member
Bought
$781.51K 165,224 at 4.73
opened
First buy on file
8 Jun 2026
Mattiello Marcos Zilles Senior Management
Sold at will
$53.08K 10,387 at 5.11
100%
Sold half or more
2 Jun 2026
Wang Chia Yuan Senior Management
Sold at will
$138.90K 30,935 at 4.49
100%
Sold half or more
2 Jun 2026
Metz Mauricio Executive Vice President
Sold at will
$33.95K 7,000 at 4.85
23.7%
Not planned
26 May 2026
Metz Mauricio Executive Vice President
Sold at will
$23.50K 5,000 at 4.70
14.5%
Not planned
22 May 2026
Japur Rafael Dorneles VP, CFO and IR Officer
Sold at will
$23.75K 5,000 at 4.75
4.9%
Not planned
19 May 2026
Sold at will
$36.80K 8,000 at 4.60
99.9%
Sold half or more
13 May 2026
Metz Mauricio Executive Vice President
Sold at will
$24.25K 5,000 at 4.85
12.6%
Not planned
8 May 2026
Da Cunha Gustavo Werneck CEO and Board Member
Sold at will
$2.11M 432,854 at 4.87
100%
Sold half or more
5 May 2026
Wang Chia Yuan Senior management
Sold at will
$190.00K 40,000 at 4.75
55.4%
Sold half or more
5 May 2026
Metz Mauricio Executive Vice President
Sold at will
$9.38K 2,000 at 4.69
4.8%
Not planned
30 Apr 2026
Wang Chia Yuan Senior management
Sold at will
$90.80K 20,000 at 4.54
21.7%
Not planned
28 Apr 2026
Da Cunha Gustavo Werneck CEO and Board Member
Sold at will
$396.00K 88,000 at 4.50
99.9%
Sold half or more
28 Apr 2026
Wang Chia Yuan Senior Management
Sold at will
$344.38K 76,700 at 4.49
45.4%
Not planned
28 Apr 2026
Uhlein Clemir Senior Management
Sold at will
$172.62K 38,276 at 4.51
100%
Sold half or more
28 Apr 2026
Metz Mauricio Executive Vice President
Sold at will
$4.53K 1,000 at 4.53
2.4%
Not planned
10 Apr 2026
Wang Chia Yuan Senior Management
Sold at will
$105.25K 25,000 at 4.21
12.9%
Not planned
10 Apr 2026
Metz Mauricio Executive Vice President
Sold at will
$4.24K 1,000 at 4.24
2.3%
Not planned
9 Apr 2026
Da Cunha Gustavo Werneck CEO and Board Member
Sold at will
$208.00K 50,000 at 4.16
36.2%
Not planned
9 Apr 2026
Wahrhaftig Marcos Eduardo Faraco Executive Vice President
Sold at will
$50.42K 12,419 at 4.06
100%
Sold half or more
8 Apr 2026
Da Cunha Gustavo Werneck CEO and Board Member
Sold at will
$200.50K 50,000 at 4.01
26.6%
Not planned
8 Apr 2026
Wang Chia Yuan Senior management
Sold at will
$136.00K 34,000 at 4.00
14.9%
Not planned
20 Mar 2026
Johannpeter Guilherme Chagas Gerdau Vice-Chairman of Board
Sold at will
$281.65K 85,607 at 3.29
100%
Sold half or more
Showing 1–27 of 27.