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Rietbroek Robbert

In the past year, 1 open-market purchase filing worth $501.2K and no sales.

Current role at each company

Open-market trades in the past year

Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.

Bought
$501.2K
1 filing
Sold
–
0 filings
Net
+$501.2K
Bought minus sold
Companies
1
With open-market trades

Trades

Every Form 4 that lists Rietbroek Robbert as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.

GPK Graphic Packaging Holding Co

President and CEO1 trade

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 4, 2026 (view filing)Mar 4Same dayRietbroek RobbertPresident and CEOPPurchase+44.3K$11.32+$501.2KNew position44.3K after

PRMB Primo Brands Corp

Chief Executive Officer1 trade

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 14, 2025 (view filing)Aug 131 dayRietbroek RobbertChief Executive OfficerPPurchaseClass A Common Stock+8.29K$24.12+$199.8K+1.4%586.3K after