Overview

• Kelley Mack passed away peacefully on August 2 in Cincinnati after battling a rare central nervous system glioma.
• Her sister, Kathryn Klebenow, confirmed the death in an Instagram post on August 5, highlighting Kelley’s courage and love for her fans.
• Mack was best known for her role as Addy on AMC’s The Walking Dead and also appeared on 9-1-1, Chicago Med and Schooled, plus national commercials.
• She publicly shared her diagnosis early in 2025 and underwent proton radiation therapy as part of her treatment journey.
• A public memorial service is set for August 16 at the Glendale Lyceum in Ohio to celebrate her life and career.