After Howard Sark's death, Obadiah Stane became interim CEO of Stark Industries until Tony Stark took over officially shortly after. Stane's jealousy of the younger Stark led to him betraying Stark by joining forces with the Ten Rings to organize a failed attempt to assassinate him. He gave the Ten Rings Stark Industries weapons. He eventually executed Ten Rings due to their failure to kill Stark. He used Tony's mk1 armor and became Iron Monger, tried to kill Stark, leading to his own death.