MarketPeel
Insider Trading Intelligence
CD

Cunha Gustavo Werneck Da

GGB
CEO AND BOARD MEMBER · GERDAU S.A. · CIK 0002120774
FILING MIX · LIFETIME20%/80%
BUYS
1
SELLS
4
TOTAL VALUE
$2.91M
COMPANIES
1
ACTIVE SINCE
Apr 2026
HOLDINGS NOW
432,854
AVG SELL PX
$4.69
TRADE KIND
SHOWING 5 / 5
Trades · vs SPY
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Performance · forward returns vs SPY
4 backtested trades · 8 horizons · 21 pending
Forward-return performance of every backtestable P/S trade by Cunha Gustavo Werneck Da, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d4+25.00%+3.40%+2.27%+1.13%+1.72%
14d4+25.00%+3.46%+4.38%+1.75%+2.49%
30d4(1 pending)+0.00%+13.99%+8.80%+10.30%+10.30%
60d4(4 pending)
90d4(4 pending)
180d4(4 pending)
1y4(4 pending)
2y4(4 pending)
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
GGB · 432,854 shares · as of May 8, 2026
0108,214216,427324,641432,854SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2026
FLOW · 1 buys / 4 sellsCOVERAGE · 1 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILED
GGB
GERDAU S.A.
PURCHASEGRANT
Stock grant
432,774432,854May 8, 2026May 12, 2026
GGB
GERDAU S.A.
SALE
CEO and Board Member
432,854$4.87$2.11M0May 8, 2026May 12, 2026
GGB
GERDAU S.A.
SALE
CEO and Board Member
88,000$4.50$396.0K80Apr 28, 2026May 5, 2026
GGB
GERDAU S.A.
SALE
CEO and Board Member
50,000$4.16$208.0K88,080Apr 9, 2026Apr 10, 2026
GGB
GERDAU S.A.
SALE
CEO and Board Member
50,000$4.01$200.5K138,080Apr 8, 2026Apr 10, 2026
Other insiders · GGB
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About this filer
CIK 0002120774
ROLE
CEO and Board Member
PRIMARY
GGB
COMPANIES
1
ACTIVE SINCE
Apr 2026
MARKETPEEL · /INSIDER/0002120774DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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