A Hancock county jury reached that finding late Wednesday afternoon.
19-year-old Travis Ruggiero was charged with aggravated assault.
Police say the stabbing in Sedgwick started out as a domestic dispute between Roggiero, his ex girlfriend, and the 22-year-old victim who was with her at a home on the mines road.
Roggiero’s lawyer claimed it was self defense.
The jury also found Roggiero guilty of violating a condition of his release on a previous charge.