Amil Participações' founder Dr. Edson Bueno and his business partner, Dulce Pugliese currently own approximately 70 percent of Amil Participações. Bueno and Pugliese will retain 10 percent shares of Amil Participações. In addition, Bueno will purchase shares in United Health Group worth $470 million, and agrees to keep his shares in the company for at least five years. He will continue to serve as chairman and CEO of Amil Participações and will join the board of directors of United Health Group.