Form 3 Filing by JCP Investment Entities and James C. Pappas for DENNY'S Corp

This Form 3 filing, submitted by JCP Investment Partnership, LP, JCP Investment Partners, LP, JCP Investment Holdings, LLC, JCP Investment Management, LLC, and James C. Pappas, reports their ownership of DENNY'S Corp common stock. As of October 17, 2025, these entities collectively owned more than 10% of the company's outstanding shares. However, by October 21, 2025, their ownership dropped below 10%. The filing details the ownership structure, with JCP Partnership directly owning 455,717 shares and managed accounts of JCP Management owning 373,774 shares. The Reporting Persons disclaim beneficial ownership of shares owned by other members of their Section 13(d) group.