Sperb was last seen at his home in the 47000 block of east Clausen Road in Estacada, Oregon on the afternoon of October 1, 2000. He lived with his mother and stepfather at the time of his disappearance. His mother saw him as she was leaving for work. Sperb walked away from home, reportedly en route to a neighbor's residence, but never arrived. He has never been heard from again. He left behind his wallet, identification and all his other belongings. His family didn't report him missing until October 19. Foul play is suspected in Sperb's case, which remains unsolved.