Jack Osbourne, son of legendary Black Sabbath frontman Ozzy Osbourne, has spoken out for the first time since his father’s death on July 22, 2025, one week after the rock icon’s emotional funeral in Birmingham, England. The 39-year-old television personality shared a poignant Instagram post on August 6, mourning the loss of the “Prince of Darkness,” who died at 76 from a heart attack, with coronary artery disease and Parkinson’s as contributing factors, per Fox News. Jack’s tribute, accompanied by rare family photos and videos, has resonated deeply with fans, amplifying the outpouring of grief for the heavy metal pioneer.

In his post, Jack wrote, “I haven’t really wanted to post anything since the passing of my father. My heart has hurt too much.” He kept it brief, noting Ozzy’s dislike for “long rambling speeches,” and expressed gratitude for being among the few who called him “Dad.” He added, “I got 14,501 days with that man, and I know that is such a blessing.” The tribute included a 1997 clip from The Howard Stern Show, where a young Jack described having Ozzy as a dad as “cool,” and ended with a Hunter S. Thompson quote: “Life should not be a journey to the grave… but rather to skid in broadside… loudly proclaiming, ‘Wow! What a ride!’” Jack concluded, “That was my dad. He lived his life fully.”

The post, reported by TMZ, comes after Ozzy’s funeral on July 30, where thousands lined Birmingham’s streets to honor him. Sharon Osbourne, Jack’s mother, tearfully placed flowers at the Black Sabbath bench, per The Independent. The family’s grief was compounded by a death certificate revealing a heart attack as the primary cause, contradicting earlier reports attributing Ozzy’s death solely to Parkinson’s, per Fox News. Fans on X expressed shock, with one writing, “Jack’s words hit hard—Ozzy was a legend, but also a dad.”

Jack, who rose to fame alongside Ozzy on The Osbournes (2002-2005), shared a close bond with his father, collaborating on shows like Ozzy & Jack’s World Detour. His tribute reflects the personal loss behind Ozzy’s public persona, which included selling over 100 million records and earning two Rock and Roll Hall of Fame inductions. Tributes from Metallica and Elton John, per Rolling Stone, underscored Ozzy’s global impact.

As the Osbourne family navigates their loss, Jack’s words offer a glimpse into their private pain. “My heart is full of so much sadness and sorrow, but also so much love,” he wrote. Fans continue to rally around them, ensuring Ozzy’s legacy as a rock icon and devoted father endures.