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GGB · GERDAU S.A.

Everything on this page is public record — SEC Form 4 filings and congressional disclosures — alongside any INSIDER SCANNER research case for this company.

Open-market buys0
Open-market sells2
Research cases0
Last filing2026-09-23

Insider flow: Selling only — a count of disclosed transactions, not a rating or a recommendation.

Insider transaction timeline

Every reported transaction, positioned by trade date. Purchases sit above the axis, sales below; circle area is proportional to dollar value. No share-price line is drawn — this feed carries transaction prices only, and a price history inferred from them would imply market data the filings do not contain.

Open-market purchase Open-market sale
2026-09-17 — Lopes Rafael Gamboa · sold 51,800 @ $5.09 2026-09-23 — Johannpeter Claudio · sold 85,607 @ $4.94
2026-09-172026-09-23

Insider participation

One row per insider, one cell per reported transaction, shaded by value. Repeat buying and activity clustered in time are visible at a glance.

Lopes Rafael Gamboa Other
Johannpeter Claudio Other
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The analysis built on top of these filings

The filings above are public record and stay public here. What an account adds for $GGB is the reading of them — and for this company, that is what the list below says it is, no more.

  • Transaction timelineThe [{'transaction_date': '2026-09-23', 'insider_name': 'Johannpeter Claudio', 'insider_title': 'Other', 'transaction_type': 'Open-market sell', 'shares': 85607.0, 'price': 4.94, 'value': 422898.58, 'is_buy': False}, {'transaction_date': '2026-09-17', 'insider_name': 'Lopes Rafael Gamboa', 'insider_title': 'Other', 'transaction_type': 'Open-market sell', 'shares': 51800.0, 'price': 5.09, 'value': 263662.0, 'is_buy': False}] reported transactions plotted over the window rather than listed, so concentration is visible.

Not available for GGB today: no reported open-market purchases in this window, so there is no insider cost basis to compute; no research case — nothing here has cleared the scoring threshold. Both appear on this page on their own if that changes.

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Not financial advice. This page reports public filings and past research output. It is not a recommendation to buy or sell, and no price target here is a prediction. Trade at your own risk.