Kelley Mack, Star of The Walking Dead, Passes Away at 33: Cause of Death & Net Worth
Kelley Mack, the talented actress who gained fame through her role as Addy in AMC’s hit series The Walking Dead, has tragically passed away at the young age of 33. Her family confirmed that she died over the weekend after enduring a prolonged health battle.
What Caused Kelley Mack’s Death?
On August 2, Kelley Mack died in her hometown Cincinnati, Ohio. According to an official statement from her family, the actress had been courageously battling a glioma, a type of tumor affecting the central nervous system.
Earlier this year in January, Kelley had publicly shared her diagnosis of astrocytoma, a cancerous growth that began with back pain and gradually led to weakness in her legs and upper body. As her condition worsened, she lost mobility and had to rely on a wheelchair and walker.
Despite undergoing surgery and radiation therapy, Kelley’s condition sadly did not improve. She frequently updated fans about her journey, showing immense strength, hope, and positivity until the very end.
Kelley Mack’s Age and Personal Background
Kelley was born July 10, 1992, in Cincinnati. At the time of her death, she was 33 years old.
Her full name was Kelley Lynne Klebenow, and she was known for her passion for the arts from a very young age. She is survived by her parents Kristen and Lindsay Klebenow, her siblings Kathryn and Parker, and grandparents Lois and Larry Klebenow.
A Brief Look at Her Career
After completing high school, Kelley pursued Cinematography at Chapman University, graduating with honors in 2014. She later moved to Los Angeles to launch her career in acting and filmmaking.
She found success across various platforms — from independent films to television and voiceover work. Her breakout moment came in 2018 when she joined the cast of The Walking Dead Season 9.
Her Other Notable Roles
- TV Series: Chicago Med, 9-1-1
- Films: Broadcast Signal Intrusion, Delicate Arch
- Voiceover: Gwen Stacy in Spider‑Verse related content
Creative Work Behind the Camera
Kelley also explored storytelling as a writer and director. She created short films such as Positive and The Kingdom. Her final project, Universal (2025), highlighted her full range of talents as lead actress and executive producer.
Kelley Mack’s Net Worth
At the time of her death, Kelley Mack’s net worth was estimated between $1 million and $2 million. Her income came from her work as a film and television actress, voice artist, and independent producer.
A Lasting Legacy
Kelley Mack may be gone, but her legacy as a passionate artist and resilient soul lives on. Whether through her unforgettable role in The Walking Dead, her moving short films, or her battle against illness, Kelley continues to inspire many.
May she rest in peace.