Kate Walsh Mourns ‘Grey’s Anatomy’ Co-Star Eric Dane Following ALS Battle

Kate Walsh, known for her role as Dr. Addison Montgomery on Grey’s Anatomy, has publicly shared her grief following the death of former co-star Eric Dane. Dane, best known for portraying Dr. Mark “McSteamy” Sloan, passed away on February 20, 2026, at the age of 53 after a battle with Amyotrophic Lateral Sclerosis (ALS).

Walsh Reflects on Early Days of ‘Grey’s Anatomy’

Walsh took to Instagram to express her sadness, remembering her early days working with Dane on the hit medical drama. She recalled their first scene together, an elevator scene, noting that it was likely Dane’s first appearance on the show as well. “He was so handsome and I thought ‘but can this guy act?’ 😂 and of course he could, and did, and the rest is history,” Walsh wrote in her post. US Magazine reports Walsh described Dane as sensitive, intelligent, and deeply supportive.

ALS Diagnosis and Impact

Dane publicly revealed his diagnosis of ALS in January 2026, just ten months before his death. Parade reports that his family shared the news of his passing following complications related to the incurable neurodegenerative disease. Walsh acknowledged the devastating nature of ALS, calling it an “awful disease” and encouraging her followers to support research efforts, specifically mentioning Target ALS.

Tributes and Support for the Dane Family

Walsh extended her condolences to Dane’s daughters, Billie and Georgia, and his wife, Rebecca Gayheart. A GoFundMe page was established by friends of the Dane family to honor his memory, receiving a significant donation of $27,000 from filmmaker Sam Levinson and his wife, Ashley. As of Saturday morning, the fundraiser had raised over $80,000. PerthNow reports Walsh, who now resides in Perth, Australia, shared her emotional statement via Instagram.

Dane’s Legacy

Eric Dane’s portrayal of Dr. Mark Sloan on Grey’s Anatomy and his subsequent role in Euphoria cemented his place as a recognizable and respected actor. His passing has prompted an outpouring of grief from fans and colleagues alike, highlighting the impact he had on the entertainment industry and those who knew him.