Bob Weir, Grateful Dead co-founder, dies aged 78

Bob Weir, co-founder of the Grateful Dead, has died at 78; his family said he transitioned peacefully and asked for privacy.

Bob Weir, co-founder of the Grateful Dead, has died at age 78, his family's post announced. The post said he transitioned peacefully, surrounded by loved ones, and asked for privacy. Weir helped found the Grateful Dead in 1965 and maintained a career that spanned more than six decades. The band's music became closely associated with San Francisco's 1960s counterculture and later received formal recognitions. Key details: - The family said he "transitioned peacefully" and expressed appreciation for the outpouring of support while requesting privacy. - Weir co-founded the Grateful Dead in 1965 and performed for more than 60 years. - The Grateful Dead were inducted into the Rock and Roll Hall of Fame in 1994 and received a Grammy Lifetime Achievement Award in 2007. - He was diagnosed with cancer in July, continued to perform while undergoing treatment, and the post said he had beaten cancer before his death; the type of cancer was not specified. - Weir took part in later formations such as Dead & Company, which had a residency at the Las Vegas Sphere in 2024 and 2025. Summary: Bob Weir's passing marks the loss of a long-standing figure in the Grateful Dead and in American rock music. His family has asked for privacy and thanked people for their messages of support. Details about services or any public commemorations are undetermined at this time.