In biological terms, “death is the permanent cessation of all vital functions in a living organism”. But what do you think, is this just the demise of a body? No, it is even the end of a soul and numerous other spirits that are connected with it.
On August 2, 2025, Saturday evening, the news of Kelley Mack’s death sparked media attention and deeply shocked her fans and well-wishers. NBC News first shared the unexpected report. Kelley Mack, known for her role in “The Walking Dead”, passed away at just 33 years old. When the news breaks, countless people are heartbroken. But who has control over death, right?
So, do you know how she died? What disorder was she battling against? Let’s know everything about her death and illness, as well as some facts about her lifestyle. Know if this also impacts her career life. Let’s not waste time. Here is your guide:
Table of Contents
About Kelley Mack
Kelley Mack is an American actress who is most popular for her iconic role as Addy in the series The Walking Dead in season 9. She also played significant roles in numerous popular films. Mack has also worked as a screenwriter and has worked on several projects with her mother. With thousands of followers on social media, she emerged as a talented actress in the industry. But after months of battling a dangerous disease, the genius passed away on August 2nd.
According to variety.com, Mack’s family states that she died on August 2, 2025, in her hometown of Cincinnati after a battle with glioma of the central nervous system.
Before knowing about her journey with the deadly cancer, here is some of her early life and career background. Also, have a glimpse of her lifestyle.
| Must-know facts about Kelley Mack | |
| Real Name | Kelley Lynne Klebenow |
| Known As | Kelley Mack |
| Date of Birth | July 10, 1992 |
| Birth Place | Cincinnati, Ohio, U.S. |
| Age | 33 at the time of her death |
| Gender | Female |
| Zodiac Sign | Cancer |
| Nationality | American |
| Ethnicity | Caucasian-American |
| Religion | N/A |
| Schooling | Hinsdale Central High School, Bachelor’s degree in cinematography from Dodge College of Film at Chapman University |
| Height | 5′ 3″ (1.60 m) |
| Weight | Approximately 100 lbs (45 kg) |
| Marital Status | Unmarried |
| Partner | Logan Lanier |
| Profession | Actress |
| Net Worth | $1 million to $2 million |
| Source of earning | Acting, producing, and voice-over work |
| Popular Role | Addy in “The Walking Dead” Season 9 |
| Years Active | 2008–2025 |
| Notable work | The Walking Dead |
| Died | August 2, 2025 |
| Reason of death | battle with glioma of the central nervous system |
Early Life & Background Story
Kelley Mack, who was born on July 10, 1992, in Cincinnati, a town in the U.S. She was born in a classic family that follows culture and customs. Kristen and Lindsay Klebenow are her parents, and she has two younger siblings, Kathryn and Parker. Parker Mack was Kelley Mack’s younger brother, who was now 28 years old and also connected to the acting industry.
Family Tree
| Grandparents | Lois Klebenow and Larry Klebenow |
| Parents | Kristen Klebenow and Lindsay Klebenow |
| Siblings | Kathryn Klebenow and Parker Klebenow |
| Partner | Logan Lanier (Boyfriend) |
About Education Life
Kelley graduated from Hinsdale Central High School in Illinois. After graduating, she attended the Dodge College of Film and Media Arts at Chapman University to pursue cinematography.
Kelley’s Early Interest
From her early age, Kelley has had a deep interest in the film industry. Her hobbies are hiking, biking, playing the piano, traveling, and pickleball. She was also described as someone who enjoyed collaborating with others and storytelling.
Let’s have a glimpse at her professional life, how did it run:
How was Her Career?
Early in her career, she started her journey through television commercials, but still wanted to perform in film production, which is her deep interest. She had a passion for filmmaking and performance from a young age, starting her career in commercials after receiving a video camera as a birthday gift.
Mack made her debut in 2008 with The Elephant Garden as a role, Chole, a short film, receiving acclaim that included an Acting Award from Tisch School of the Arts and the Student Visionary Award at the renowned Tribeca Film Festival. Mack was similarly dedicated to making films such as A Knock at the Door and Universal.
Kelley Mack also worked on various popular series like The Walking Dead, 9-1-1, and Chicago Med. Her other notable works are Profile—thriller film, Long Distance Trip—comedy film, Simón—short film, Mr. Manhattan—romantic film, Delicate Arch—horror film, etc.
Universal—a science fiction movie, which she starred in and executive produced at the time of her death. Mack’s last television commercial was for Rakuten with her mother. She was known to have spent the last 11 years of her life in Los Angeles, working in the film industry. She had been auditioning last in June 2025.
She was a voice match for Hailee Steinfeld’s character, Gwen Stacy, in the film “Spider-Man: Into the Spider-Verse.”
Kelley Mack’s Lifestyle & Personal Life
Kelley Mack spent a classic lifestyle and follows customs belonging to her family’s tradition. Throughout her life, she was known for her creative spirit and infectious enthusiasm.
Kelley maintained a good relationship with her sibling, who posted on social media about their close bonds. She was in a relationship with a partner named Logan Lanier. In various public places, both are connected to each other. In January 2025, Mack disclosed that she and Lanier had progressed in their relationship and shared an apartment together. Soon after that, she started to face health challenges.
Everything about Kelley Mack’s Death
August 2, 2025, Saturday, time of evening, surrounded by her family, Kelley Mack breathed her last.
Kelley Mack announced in January about her diagnosis. She was diagnosed with “diffuse midline glioma”, a very rare form of astrocytoma cancer. Diffuse midline gliomas are tumors of the central nervous system, indicating they originate in the brain or spinal cord. According to the National Cancer Institute (NCI), they undergo surgery, radiation therapy, and chemotherapy for treatment.
What is a Glioma?
A glioma is a tumor in the brain or spinal cord that arises from glial cells, which provide support and protection for nerve cells. These tumors can differ in their level of aggressiveness, ranging from slow-growing, low-grade gliomas to rapidly growing, high-grade gliomas that pose a risk to life. Glioma Symptoms are like Headaches, Vision changes, personality changes, Weakness or numbness, Difficulty speaking, Nausea, and vomiting.
Kelley Mack’s Recent Update – Related to Her Death
Kelley’s sister confirmed her sister’s death in an emotional Instagram post that was shared to her profile. According to her words, “It is with indelible sadness that we are announcing the passing of our dear Kelley. Such a bright, fervent light has transitioned to the beyond, where we all eventually must go,”
TMZ was reporting this, also stating that Kelley Mack had a “nice recovery” after undergoing treatment for glioma in February, shortly before her death.
In early July, Kelley said to her team that she needed to take a break from auditioning. She shared her cancer diagnosis with her Instagram followers on January 3, saying that she started suffering “persistent lower back pain” in September.
On March 14, Kelley revealed that she had completed proton radiation treatment and had been undergoing physical therapy. After 12 days, on March 26, Mack shared a video of herself proudly walking up some stairs with assistance, saying that “it’s a big deal” for her.
Months before her death, Kelley honored her partner, Logan Lanier, for his constant support in the entire battle.
Family & Fans’ Reaction to Kelley Mack’s sudden death
The family’s statements highlighted Mack’s warmth, creativity, and dedication to her work, and they shared that she “cherished time with her family and friends.” They also told a celebration of her life to be held in Ohio, with a separate memorial planned for Los Angeles.
- Fans and colleagues expressed their grief and condolences on social media. Many remembered her for her talent and “sweet soul.”
- Alanna Masterson, who also starred in “The Walking Dead,” paid tribute, writing, “What an incredible human. So proud to have fought alongside her in our final episode together.”
- The director of “The Walking Dead,” Michael E. Satrazemis, called her a “bright light on every level.”
- Other colleagues and fans shared their condolences, with one saying, “My deepest condolences, Kelley was such a sweet and happy soul, and I’m happy to have met her. She fought so hard.”
Final Thought
It was unbelievable that one of the most talented actresses was no longer with us. Her dedication and work exclusively touch our souls, especially as Addy in “The Walking Dead” TV show.
As an actress, she not only gained popularity but also achieved fame with lots of love from her family, friends, and fans. Kelley Mack accumulated 35 acting credits and five producing credits during her career. Her adolescence and performance will still exist with her fans.
Frequently Asked Questions (FAQs)
Who was Kelley Mack Dating?
Kelley Mack had a deep relationship with her boyfriend, Logan Lanier, who also provided constant support in her entire journey with the cancer.
Who are Kelley Mack’s Parents?
Kristen Klebenow and Lindsay Klebenow are Kelley Mack’s parents. Both are present when she breathed her last.
What is the Reason Behind Kelley Mack’s Death?
Kelley Mack died of “diffuse midline glioma,” an extremely rare form of astrocytoma cancer.
