Jack Osbourne's heart is 'full of so much sadness' Jack Osbourne has shared a poignant tribute to his late father Ozzy Osbourne and admitted his heart is "full of so much sadness" following his death last month. 6 August 2025 Jack Osbourne's heart is "full of so much sadness" following the death of his dad Ozzy Osbourne. Jack Osbourne has shared a poignant tribute to his dad Ozzy Osbourne The Black Sabbath star died on July 22 - just two weeks after he reunited with his bandmates for a huge reunion show in his hometown of Birmingham - and the tragedy left his son Jack, 39, totally devastated.