Mikhail Prokhorov is the former Vice-President of Onexim Group.
In 2016, Prokhorov ran afoul of Putin when his media group Onexim, specifically RBC Media, published articles and news reports on the Panama Papers and Putin's son-in-law Kirill Shamalov's connections and offshore assets
 In April 2008, Prokhorov sold his 25% plus two shares stake in Norilsk Nickel to United Company RUSAL, another mining conglomerate controlled by his fellow billionaire Oleg Deripaska, in exchange for some 14% of Rusal stock, about US$5 billion in cash, and additional payment obligations of US$2 billion

