The Law Offices of Frank R. Cruz is investigating potential claims against the board of directors of Graphic Packaging Holding Company (“Graphic Packaging” or the “Company”) (NYSE: GPK) concerning whether the board breached its fiduciary duties to shareholders.

If you are a shareholder, click here to participate.

In December 2025, a shareholder owning 4.2% of the Company’s stock issued a letter in response to Graphic Packaging’s announcement that Robbert E. Rietbroek would replace Michael Doss as CEO. Weeks later, the Company’s Executive Vice President and General Counsel departed her roles.

Our investigation concerns whether the Company’s board of directors breached its fiduciary duties to shareholders and/or grossly mismanaged the Company in connection with the above events.

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If you still hold Graphic Packaging shares purchased before December, 2025 and wish to discuss this matter with us, or have any questions concerning your rights and interests with regards to this matter, please contact Frank R. Cruz, of The Law Offices of Frank R. Cruz, 2121 Avenue of the Stars, Suite 800, Los Angeles, California 90067 at 310-914-5007, by email to info@frankcruzlaw.com, or visit our website at www.frankcruzlaw.com. If you inquire by email please include your mailing address, telephone number and number of shares purchased.

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