Bouriko, 40, joins a very small group of high-level women executives in the metal and mining industry. She had been Rusal’s CFO since October 2013, before which she was deputy CEO at En+. Prior to joining En+, Bouriko spent 16 years with KPMG in Russia and Canada, including as a partner.

Deripaska’s, Rusal and En+ press services declined to comment.

Deripaska decided to step down from the non-operational roles after the companies achieved targets he had set, the people said. He will focus on the strategic development of other companies and the resignation isn’t linked to the conflict with Vladimir Potanin over MMC Norilsk Nickel, they said. The decision also isn’t connected to a video posted by opposition leader Alexei Navalny, the people said.