Overview
- Representatives confirmed Dane died on February 19 from complications of ALS, saying he passed peacefully among close friends, his wife Rebecca Gayheart, and daughters Billie and Georgia, and requesting privacy.
- After revealing his diagnosis in April 2025, his condition progressed quickly, with media reports noting wheelchair use and speech difficulties by October.
- Dane became a prominent voice for ALS awareness and research during the past year and received an ALS Advocate of the Year recognition in September 2025.
- He was widely known for portraying Dr. Mark Sloan on Grey’s Anatomy and Cal Jacobs on HBO’s Euphoria, with other credits including The Last Ship and X‑Men: The Last Stand.
- A posthumous memoir titled Book of Days is expected in 2026 with Maria Shriver’s involvement, and outlets report he will appear in Euphoria’s forthcoming third season.