Kelley Mack Passes Away, All About The 'Chicago Med' Star's Glioma, Career, Net Worth And Family

Kelley Mack was a well-known American actress who rose to fame for her role as 'Addy' in the popular TV show, The Walking Dead. The actress made a space for herself with her contagious bright smile and impeccable acting skills. Kelley hailed from Cincinnati, Ohio and was born on July 10, 1992. She fell in love with the creative arts at a very young age and started acting when she was a teenager, soon finding her passion for performing. However, before becoming a well-known television persona, she started her career by starring in several short films, commercials, and independent projects. 

Kelley Mack was a super talented actress with her skills branching across production, writing, and several other areas. While The Walking Dead brought her the limelight she deserved, projects like Chicago Med and 9-1-1 made her a household name. Aside from her work on screen, Kelley was also passionate about mental health and animal rights and would often share her thoughts and support good causes on social media. However, little did anyone know that her journey on earth would be cut short by a deadly glioma. The actress was diagnosed with a rare type of cancer, and she passed away on August 2, 2025.

Kelley Mack's early life, family and love for cinema

Kelley Mack was a skilled actress. She was born in Ohio to businessman and real estate agent, Lindsay Jay Klebenow and actress, Kristen Mack. She has two younger siblings, a brother, Parker Mack, who is also an actor and a sister, Kathryn Klebenow. Her unfortunate demise left her entire family heartbroken. She is now survived by her parents, siblings, grandparents, Lois and Larry Klebenow, and her boyfriend, Logan Lanier.

Coming to her love for the performing arts, she began acting in commercials from a very young age. However, it was when she was gifted her first mini video camera that she realised that she was extremely passionate about storytelling. Despite her natural talent as an actress, Kelley decided to focus on her education and earned a degree in film production and cinematography.

Kelley Mack's journey in the entertainment industry and net worth

Kelley Mack rose to fame with the well-known series, The Walking Dead. The actress appeared in the show during Season 9 as 'Addy' in five episodes of AMC's show. In the finale of Season 9, 'Addy', along with 10 other characters, was abducted by the 'Whisperers', leading to fatal consequences. The actress thereafter appeared in 9-1-1 as 'Penelope Jacobs', she played the character once again on Season 8 of Chicago Med as well. Kelley also made an appearance in the Modern Family spinoff, Schooled, and multiple miniseries. She appeared in feature films such as Broadcast Signal Intrusion opposite Harry Shum Jr., Mr. Manhattan, in which she essayed the role of 'Alice'.

Kelley Mack gave her best to every act she did. She made her film debut in 2008 with The Elephant Garden and even received an Acting Award from Tisch School of the Arts for her role as 'Chloe'. The film did exceptionally well, and she was also awarded the Student Visionary Award at the Tribeca Film Festival. The actress has lived in Los Angeles for the past 11 years, working in film, TV, commercials, and doing voice-over work. Mack provided the voice match for Hailee Steinfeld's 'Gwen Stacy' in the Oscar-winning Spider-Man: Into the Spider-Verse.

However, it's not just her work as an actor that has earned praises, but her stint as a producer has been exceptionally fruitful for Kelley Mack as well. Some of her short film productions include the 2016 Festival Award winner, A Knock at the Door. The film was honoured with the title at the Atlanta Horror Film Festival and received two nominations at FilmQuest. Mack served as executive producer on Universal, an upcoming feature by writer-producer, Stephen Portland, and she will also be starring in the film. Coming to her net worth, while there is no definitive number, it's safe to say that Kelley was steadily building her path.

Kelley Mack had a rare type of brain cancer, which led to her untimely demise

It was in January 2025 when Kelley Mack first opened up about her diagnosis. The actress shared how she had a persistent back pain since September 2024. However, she thought it was because of a slipped disc. She shared that it was in October 2024 that the pain became unbearable, and she went for an emergency MRI, and the mass on her spine was found. Kelley shared her journey on her social media explaining how the glioma biopsy led her to lose function in her right leg and half of the function in her left leg. 

Kelly was diagnosed with a rare type of astrocytoma called diffuse midline glioma. For the unversed, a report by the Cleveland Clinic stated that a glioma is a tumour that forms when glial cells (also known as the 'glue' of the neurons) grow out of control. Normally, these cells support nerves and help your central nervous system work. Gliomas usually grow in the brain, but can also form in the spinal cord. The website further explained about the glioma of the central nervous system and stated:

"Gliomas are malignant (cancerous), but some can be very slow-growing. They’re primary brain tumours, meaning they originate in the brain tissue."

Kelley Mack fought a tough battle with the glioma and underwent extreme treatments. Unfortunately, despite the best of efforts, she passed away at the age of 33 on August 2, 2025, in Cincinnati. The Mack Family shared a statement about the actress's passing on Mack's CaringBridge page, along with information about 'a recognition and remembrance of Kelley's life' in Glendale, Ohio, on August 16, 2025. They further shared that a celebration of life is planned for an unspecified date in Los Angeles.

What are your thoughts on the life of Kelley Mack and the deadly glioma that took her life?

Next Read: Inside Pamela Anderson, Jon Peters' Marriage Of 12 Days, Will Be Leaving Her 10 Million US Dollars

AWESOME NEWS! Now you can download BollywoodShaadis app and never miss a story. Get App

AWESOME NEWS! Now you can download BollywoodShaadis app and never miss a story. Choose your device Android or IOS (Apple)