Complex sentence: The company was founded in the early 1990's by Vladimir Potanin and Mikhail Prokhorov, and the primary owner is Vladimir Potanin, with Mikhail Prokhorov having departed in 2007.
Split into simpler sentences: The company was founded in the early 1990's by Vladimir Potanin and Mikhail Prokhorov. The primary owner is Vladimir Potanin, with Mikhail Prokhorov having departed in 2007.