Eminence Capital Sends Letter to GPK Board of Directors Seeking Immediate Reinstatement of Mike Doss as CEO

Eminence Capital, LP (“Eminence”), a private investment firm that beneficially owns approximately 4.2% of Graphic Packaging Holding Company (NYSE: GPK) (“GPK” or the “Company”) today announced it sent a letter to GPK’s Board of Directors (the “Board”) on December 15, 2025 following the Board’s seemingly inexplicable and clearly rushed decision to replace long-standing CEO Mike Doss with Robbert Reitbroek.

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