Bob Weir, the legendary guitarist and founding member of the Grateful Dead, has passed away at the age of 78. His official Instagram account confirmed the sad news on Saturday.

According to the announcement, Weir died peacefully while surrounded by his family and friends. He had been battling cancer and ultimately succumbed to complications related to lung issues.

“It is with deep sorrow that we announce the passing of Bobby Weir,” the statement on Instagram read. “He departed this world peacefully, embraced by loved ones, having bravely fought cancer in his unique way. Unfortunately, he succumbed to complications with his lungs.”

In tribute to Weir’s lasting influence, the message continued, “Bobby will always be a beacon whose exceptional artistry transformed American music. His contributions went beyond just filling venues with sound; they brought warmth and light that touched the soul, creating a sense of community, a shared language, and a family feeling that fans across generations hold dear.”

Every chord he struck and every lyric he sang was a thread in the rich tapestry of stories he told. His music invited fans to feel, to question, to explore, and to find a sense of belonging.”

Weir had been diagnosed with cancer last summer, shortly before he was set to headline a series of concerts at San Francisco’s Golden Gate Park.

Grateful Dead guitarist and founding member Bob Weir has died at the age of 78, the news confirmed in a statement on his official Instagram account

The post revealed that Weir passed away peacefully, surrounded by family and friends, after battling cancer and ultimately succumbing to underlying lung issues; (Weir in 1970)

Weir had been diagnosed with cancer last summer, shortly before headlining a series of shows at Golden Gate Park in San Francisco; (The Grateful Dead pose on the corner of 20th and Connecticut in Potrero Hill, San Francisco, California, circa 1965. Left to right: Phil Lesh, Jerry Garcia (1942 – 1995), Ron ‘Pigpen’ McKernan (1946 – 1973), Bob Weir and Bill Kreutzmann)

His musical journey began at just 16, when he wandered into a Palo Alto music store following the sound of a banjo and met Jerry Garcia, who was strumming inside, per reports.

The pair played together all night, sparking the formation of The Grateful Dead alongside Ron ‘Pigpen’ McKernan, Phil Lesh, and Bill Kreutzmann –  the band’s five founding members.

Weir was born Robert Hall Weir in San Francisco on October 16, 1947, and was adopted as an infant. 

He grew up in the Bay Area, struggling with undiagnosed dyslexia and behavioral challenges, per reports.

He started playing guitar at 13 and performed at local folk clubs. 

In 1965, he met Garcia in the Palo Alto music store and the two formed Mother McCree’s Uptown Jug Champions, which later became the Warlocks and eventually the Grateful Dead. 

Weir briefly left the band in 1968 but returned to continue contributing to its mix of country-rock and improvisational music.

‘It is with profound sadness that we share the passing of Bobby Weir. He transitioned peacefully, surrounded by loved ones, after courageously beating cancer as only Bobby could. Unfortunately, he succumbed to underlying lung issues,’ the message read; (L-R: Bob Weir, Bill Kreutzmann, Jerry Garcia, Phil Lesh in 1968)

His musical journey began at just 16, when he wandered into a Palo Alto music store following the sound of a banjo and met Jerry Garcia, who was strumming inside; (Phil Lesh (L) and Bob Weir in 1993)

Weir was born Robert Hall Weir in San Francisco on October 16, 1947, and was adopted as an infant; (pictured 1997)

After the death of fellow founding member Ron ‘Pigpen’ McKernan in 1972, Weir assumed a larger role as a vocalist and songwriter. 

He released solo albums including Ace and Heaven Help the Fool and performed with several side projects, including Kingfish, the Bob Weir Band, Bobby and the Midnites, RatDog, Furthur, and The Other Ones. 

He also took on leadership roles within the band, helping guide its direction after Garcia’s health and addiction challenges. 

Weir pressed on after the sudden loss of Garcia, who died of a heart attack in 1995 at age 53, continuing to tour and record.

He fronted RatDog, a long-running project that mixed Grateful Dead staples with original material, and later stepped into singing Garcia’s songs with various post-Dead lineups, including the Other Ones, the Dead, and Furthur. 

In 2013, Weir collapsed during a Furthur show, and the following year RatDog dates were scrapped as he later acknowledged struggling with an addiction to prescription painkillers. 

He eventually returned to the spotlight, reuniting with fellow survivors Mickey Hart and Bill Kreutzmann for the Grateful Dead’s 50th anniversary Fare Thee Well concerts in 2015. 

That celebration led to the formation of Dead & Company, with John Mayer joining Weir, Hart, Kreutzmann and longtime Dead collaborators. 

In 2013, Weir collapsed during a Furthur show, and the following year RatDog dates were scrapped as he later acknowledged struggling with an addiction to prescription painkillers; (Weir, Bobby Keys of The Rolling Stones, and Grace Potter of Grace Potter and the Nocturnals perform in 2012)

Taylor Swift posed with Weir at the 67th Grammy Awards in 2025

The group carried the band’s catalog into a new era, wrapping a decade-long run with a 2023 ‘Final Tour’ and multiple residencies at Las Vegas’ Sphere. 

In December 2024, following the death of bassist Phil Lesh two months earlier, Weir and the remaining members were honored at the Kennedy Center. 

His final appearances came in August, when Dead & Company headlined three shows at Golden Gate Park marking the Grateful Dead’s 60th anniversary.

The statement announcing his death highlighted his long-term vision for the band’s legacy: ‘There is no final curtain here, not really… He often spoke of a 300-year legacy, determined to ensure the songbook would endure long after him. 

‘May that dream live on through future generations of Dead Heads.’