INSIDER
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Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

RH CHAIN…
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
01Overview02Daily Brief03Live04Congress05Corporate Insiders06Government Money07Political Influence08Institutions09Washington Network10Follow the Power11Disclosure Clock12AI Investigator13Watchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
OverviewDaily BriefLiveCongressCorporate InsidersGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenMethodologyMatch reviewLaunch readiness
Data sources
SEC FORM 45h ago
HOUSE PTR5h ago
SEC 13F5h ago
ROBINHOOD CHAIN5h ago
Public company

GGBGERDAU S.A.

CIK 0001073404

EDGAR filingsOpen in network
Disclosed transactions28
Buys / sells1 / 25
Max Insider Score61
Connections11with evidence

GGB · disclosed activity on price

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
44
JC
Johannpeter ClaudioVice-Chairman of Board
GGBGERDAU S.A.
Open-market sale
SELL$423K
85.6K sh
Sep 23, 2026Sep 25, 2026
traded Sep 23, 2026
+2dSEC FORM 4

Evidence

Verified connections

  • ← Insider ofevidence
    Johannpeter ClaudioVice-Chairman of Board · Sep 25, 2026
  • ← Insider ofevidence
    Lopes Rafael GamboaExecutive Vice President · Sep 21, 2026
  • ← Insider ofevidence
    Mattiello Marcos ZillesSenior Management · Aug 14, 2026
  • ← Insider ofevidence
    Johannpeter Andre Bier GerdauChairman of Board of Directors · Aug 12, 2026
40
LG
Lopes Rafael GamboaExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL
$264K
51.8K sh
Sep 17, 2026
Sep 21, 2026
traded Sep 17, 2026
+4d
SEC FORM 4

Evidence

26
WF
Wahrhaftig Marcos Eduardo FaracoExecutive Vice President
GGBGERDAU S.A.
Grant or award
A$404K
107.7K sh
Jul 15, 2026Aug 27, 2026
traded Jul 15, 2026
+43dSEC FORM 4

Evidence

61
MZ
Mattiello Marcos ZillesSenior Management
GGBGERDAU S.A.
Open-market sale
SELL$53K
10.4K sh
Jun 8, 2026Aug 14, 2026
traded Jun 8, 2026
+67dSEC FORM 4

Evidence

40
JG
Johannpeter Andre Bier GerdauChairman of Board of Directors
GGBGERDAU S.A.
Open-market sale
SELL$490K
99.2K sh
Aug 10, 2026Aug 12, 2026
traded Aug 10, 2026
+2dSEC FORM 4

Evidence

29
JD
Japur Rafael DornelesVP, CFO and IR Officer
GGBGERDAU S.A.
Open-market sale
SELL$51K
10.0K sh
Aug 6, 2026Aug 10, 2026
traded Aug 6, 2026
+4dSEC FORM 4

Evidence

54
DW
Da Cunha Gustavo WerneckCEO and Board Member
GGBGERDAU S.A.
Open-market purchase
BUY$782K
165.2K sh
Jun 12, 2026Jun 15, 2026
traded Jun 12, 2026
+3dSEC FORM 4

Evidence

40
MM
Metz MauricioExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL$34K
7,000 sh
Jun 2, 2026Jun 3, 2026
traded Jun 2, 2026
+1dSEC FORM 4

Evidence

47
WY
Wang Chia YuanSenior Management
GGBGERDAU S.A.
Open-market sale
SELL$139K
30.9K sh
Jun 2, 2026Jun 3, 2026
traded Jun 2, 2026
+1dSEC FORM 4

Evidence

36
MM
Metz MauricioExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL$24K
5,000 sh
May 26, 2026May 28, 2026
traded May 26, 2026
+2dSEC FORM 4

Evidence

36
JD
Japur Rafael DornelesVP, CFO and IR Officer
GGBGERDAU S.A.
Open-market sale
SELL$24K
5,000 sh
May 22, 2026May 26, 2026
traded May 22, 2026
+4dSEC FORM 4

Evidence

54
PR
Peres Cesar Obino da RosaOfficer
GGBGERDAU S.A.
Open-market sale
SELL$37K
8,000 sh
May 19, 2026May 22, 2026
traded May 19, 2026
+3dSEC FORM 4

Evidence

36
MM
Metz MauricioExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL$24K
5,000 sh
May 13, 2026May 15, 2026
traded May 13, 2026
+2dSEC FORM 4

Evidence

53
DW
Da Cunha Gustavo WerneckCEO and Board Member
GGBGERDAU S.A.
Open-market sale
SELL$2.11M
432.9K sh
May 8, 2026May 12, 2026
traded May 8, 2026
+4dSEC FORM 4

Evidence

17
DW
Da Cunha Gustavo WerneckCEO and Board Member
GGBGERDAU S.A.
Grant or award
A—
432.8K sh
May 8, 2026May 12, 2026
traded May 8, 2026
+4dSEC FORM 4

Evidence

38
MM
Metz MauricioExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL$9,380
2,000 sh
May 5, 2026May 8, 2026
traded May 5, 2026
+3dSEC FORM 4

Evidence

47
WY
Wang Chia YuanSenior management
GGBGERDAU S.A.
Open-market sale
SELL$190K
40.0K sh
May 5, 2026May 7, 2026
traded May 5, 2026
+2dSEC FORM 4

Evidence

56
DW
Da Cunha Gustavo WerneckCEO and Board Member
GGBGERDAU S.A.
Open-market sale
SELL$396K
88.0K sh
Apr 28, 2026May 5, 2026
traded Apr 28, 2026
+7dSEC FORM 4

Evidence

43
WY
Wang Chia YuanSenior management
GGBGERDAU S.A.
Open-market sale
SELL$91K
20.0K sh
Apr 30, 2026May 4, 2026
traded Apr 30, 2026
+4dSEC FORM 4

Evidence

51
UC
Uhlein ClemirSenior Management
GGBGERDAU S.A.
Open-market sale
SELL$173K
38.3K sh
Apr 28, 2026Apr 30, 2026
traded Apr 28, 2026
+2dSEC FORM 4

Evidence

32
MM
Metz MauricioExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL$4,530
1,000 sh
Apr 28, 2026Apr 30, 2026
traded Apr 28, 2026
+2dSEC FORM 4

Evidence

46
WY
Wang Chia YuanSenior Management
GGBGERDAU S.A.
Open-market sale
SELL$344K
76.7K sh
Apr 28, 2026Apr 30, 2026
traded Apr 28, 2026
+2dSEC FORM 4

Evidence

39
WY
Wang Chia YuanSenior Management
GGBGERDAU S.A.
Open-market sale
SELL$105K
25.0K sh
Apr 10, 2026Apr 14, 2026
traded Apr 10, 2026
+4dSEC FORM 4

Evidence

36
MM
Metz MauricioExecutive Vice President
GGGERDAU S.A.
Open-market sale
SELL$4,240
1,000 sh
Apr 10, 2026Apr 14, 2026
traded Apr 10, 2026
+4dSEC FORM 4

Evidence

51
WF
Wahrhaftig Marcos Eduardo FaracoExecutive Vice President
GGBGERDAU S.A.
Open-market sale
SELL$50K
12.4K sh
Apr 9, 2026Apr 13, 2026
traded Apr 9, 2026
+4dSEC FORM 4

Evidence

43
WY
Wang Chia YuanSenior management
GGBGERDAU S.A.
Open-market sale
SELL$136K
34.0K sh
Apr 8, 2026Apr 10, 2026
traded Apr 8, 2026
+2dSEC FORM 4

Evidence

43
DW
Da Cunha Gustavo WerneckCEO and Board Member
GGBGERDAU S.A.
Open-market sale
SELL$208K
50.0K sh
Apr 9, 2026Apr 10, 2026
traded Apr 9, 2026
+1dSEC FORM 4

Evidence

47
DW
Da Cunha Gustavo WerneckCEO and Board Member
GGBGERDAU S.A.
Open-market sale
SELL$201K
50.0K sh
Apr 8, 2026Apr 10, 2026
traded Apr 8, 2026
+2dSEC FORM 4

Evidence

  • ← Insider ofevidence
    Japur Rafael DornelesVP, CFO and IR Officer · May 26, 2026
  • ← Insider ofevidence
    Peres Cesar Obino da RosaOfficer · May 22, 2026
  • ← Insider ofevidence
    Uhlein ClemirSenior Management · Apr 30, 2026
  • ← Insider ofevidence
    Metz MauricioExecutive Vice President · Apr 14, 2026
  • ← Insider ofevidence
    Wahrhaftig Marcos Eduardo FaracoExecutive Vice President · Apr 13, 2026
  • ← Insider ofevidence
    Da Cunha Gustavo WerneckCEO and Board Member · Apr 10, 2026
  • ← Insider ofevidence
    Wang Chia YuanSenior management · Apr 10, 2026