Brad Arnold, 47, the lead singer and co-founder of rock band 3 Doors Down, died Saturday following a battle with stage 4 clear cell renal cell carcinoma. Arnold had publicly shared his diagnosis in May 2025 and spoke openly about relying on his faith throughout the fight.

“We serve a mighty God, and he can overcome anything. So I have no fear,” Arnold said after his diagnosis, later adding, “God will continue to fight this [battle] for me…and God doesn’t fail.”

Arnold co-founded 3 Doors Down in 1996 and wrote the band’s breakout hit, “Kryptonite,” at age 15. The band announced his death on social media, noting he passed peacefully in his sleep with his wife Jennifer and family by his side.

“Brad’s songwriting became a cultural touchstone for a generation,” the band said. “He helped redefine mainstream rock music, blending post-grunge accessibility with emotionally direct songwriting.” Arnold’s contributions include some of the most enduring hits of the 2000s, cementing his place in modern rock history.