John Michael Osbourne was born on 3 December 1948 in Aston, Birmingham, one of six children in a working-class household. He left school at fifteen and worked in a slaughterhouse and a car factory before music. In 1967 he formed a band with the bassist Geezer Butler, joined by the guitarist Tony Iommi and the drummer Bill Ward; briefly called Earth, they became Black Sabbath. He died on 22 July 2025 at 76, having lived for years with Parkinson’s disease (Variety). What follows is the fifty-five years in between.

Birmingham in the late 1960s had a dense blues-rock scene and no money in it. Osbourne advertised himself with a note in a local record shop reading “Ozzy Zig needs gig”, which is how Butler found him. Black Sabbath spent 1968 and 1969 playing clubs in England and Germany on almost nothing, then recorded their first album in a single day for a few hundred pounds. It reached the UK top ten in February 1970 despite being dismissed by most of the music press (The Guardian).

The first three Black Sabbath albums did something almost no other records have done: they created a genre. War Pigs, Paranoid, Iron Man and Sweet Leaf set the template heavy metal has worked from ever since, and they have never stopped selling, which is why the catalogue still pays royalties half a century later. He was fired from the band in 1979, and the second career started almost immediately: Blizzard of Ozz arrived in 1981 with the guitarist Randy Rhoads and went platinum, led by Crazy Train. Thirteen solo studio albums followed.

He is one of a small number of artists inducted into the Rock and Roll Hall of Fame twice – with Black Sabbath in 2006 and as a solo artist in October 2024 (Rock & Roll Hall of Fame). He won five Grammy Awards across four decades, spanning Black Sabbath’s “Iron Man” and his own late solo work. Between them the two careers produced a body of work that outlived every genre that was supposed to replace it.

What the music paid him. Our estimate is that Osbourne’s own craft – records, songwriting and the stage – earned him roughly $200 million to $300 million gross across fifty-five years. Two catalogues drive it, and they pay very differently. The Black Sabbath records are credited to all four members, so his writer’s share of Paranoid or Iron Man is a quarter of the pool, and the band’s early contracts were the poor ones typical of 1970 Birmingham. The solo catalogue, thirteen studio albums with his name on the sleeve, paid him as the artist rather than as one of four. Touring is the third and largest line: he headlined arenas almost continuously from 1981 to 2018. The workings are below, and the assumption doing the most work is that quarter share of Sabbath.

The third career was television. The Osbournes ran on MTV from 2002 and won the Primetime Emmy for outstanding reality programme in its first year, turning a heavy metal singer into a mainstream figure in his fifties and reaching an audience that had never bought one of his records. Birmingham gave him a star on its Walk of Stars, and by the end of his life the city treated him as a civic figure rather than the local scandal he had been in the 1970s.

The television years made him bookable for advertising as he never had been. The best-known example was Best Buy’s first Super Bowl commercial in February 2011, in which he appeared with Justin Bieber (CBS News). He took a scattering of similar work through the 2000s. Campaigns of that scale typically pay a recognisable face in the low seven figures, which makes advertising a useful but minor line beside the music.

His most substantial business was Ozzfest, the travelling festival he and Sharon Osbourne created in 1996 after Lollapalooza turned him down. It ran almost every year until 2018, expanded to Britain, Germany, Belgium and Japan, and launched Slipknot, System of a Down and Limp Bizkit among others (Billboard). A festival the artist owns keeps the promoter’s margin as well as the performance fee, which made it structurally different from anything else he did.

He and Sharon Osbourne bought Welders House, a listed country property in Buckinghamshire, in the early 1990s, and it remained the family’s British base for more than thirty years. Their Los Angeles home, in Hancock Park, was listed for sale in 2022 at a reported asking price in the high teens of millions of dollars and later withdrawn. Taken together, our estimate puts the two houses at $25 million to $40 million. The larger asset is the music: a writing and performing share in four of the most durable albums in rock, which on the multiples the catalogue market paid through the 2020s would fetch a good deal more than the property.