Robbert Rietbroek insider trades: Graphic Packaging Holding (GPK) stock purchases
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Robbert reports to the SEC
Open-market buys and sales
2 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Mar 4, 2026 | GPK | ↑ Buy | 44,278 | $11.32 | $501K | Direct | Mar 4, 2026 (0d) |
| Aug 13, 2025 | PRMB | ↑ Buy | 8,285 | $24.12 | $200K | Direct | Aug 14, 2025 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other GPK insiders
Open-market trades in the last 12 months
About Robbert Rietbroek's insider trades
Robbert Rietbroek is President and CEO at Graphic Packaging Holding (GPK). Since Aug 13, 2025, Robbert has reported 2 open-market purchases worth $701K and no sales on SEC Form 4. In the last 12 months: 1 buy ($501K).
Their filings also include grants and awards (4 filings), shares withheld for taxes (1 filing), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every GPK insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.