The Law Offices of Frank R. Cruz Announces Investigation of Graphic Packaging Holding Company (GPK) on Behalf of Investors

Core Viewpoint - The Law Offices of Frank R. Cruz is investigating potential claims against the board of directors of Graphic Packaging Holding Company regarding possible breaches of fiduciary duties to shareholders [1][2]. Group 1: Investigation Details - A shareholder owning 4.2% of Graphic Packaging's stock issued a letter in December 2025, responding to the announcement of Robbert E. Rietbroek as the new CEO, replacing Michael Doss [2]. - Following the CEO transition, the Company's Executive Vice President and General Counsel also departed from their roles, raising concerns about the board's management and fiduciary responsibilities [2]. Group 2: Shareholder Engagement - Shareholders who purchased Graphic Packaging shares before December 2025 are encouraged to discuss their rights and interests regarding the investigation with the Law Offices of Frank R. Cruz [4].