The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Rietbroek Robbert since 2025.
This trader's CIK number is 2002890.
At the time of last reporting, Rietbroek Robbert was the President and CEO of Graphic Packaging Holding Co. (stock ticker symbol GPK).
Also see all insider trading activities at Graphic Packaging Holding Co.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | PRMB | 8,285 | $199,834 | 0 | $0 | 0 | $0 |
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2026 | GPK | 44,278 | $501,094 | 0 | $0 | 0 | $0 |
2. Graphic Packaging Holding Co (GPK)
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-13 | PRMB | Buy | 8,285 | 24.12 | 199,834 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-03-04 | GPK | Buy | 44,278 | 11.32 | 501,094 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Rietbroek Robbert (President and CEO of Graphic Packaging Holding Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.