MARTENS PHILIP R (CIK 1190851) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-21). Recent activity: Buy GPK (16,261 shares), Sell GPK (56,737 shares), Sell GPK (7,015 shares), Buy GPK (7,015 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-21 | GRAPHIC PACKAGING HOLDING CO (GPK) | Director | Buy | 16,261 | $0 |
| 2025-08-05 | GRAPHIC PACKAGING HOLDING CO (GPK) | Director | Sell | 56,737 | $1.2M |
| 2025-08-05 | GRAPHIC PACKAGING HOLDING CO (GPK) | Director | Sell | 7,015 | $152,927 |
| 2025-05-22 | GRAPHIC PACKAGING HOLDING CO (GPK) | Director | Buy | 7,015 | $0 |
Source: SEC Form 4 filings · as of 2026-05-21