Gennady Timchenko, a long-time ally of Russian President Vladimir Putin, resigned from the board at gas producer Novatek on Monday after he was targeted by sanctions over Russia's military campaign in Ukraine.
Novatek, Russia's largest private natural gas producer, did not provide a reason for his resignation. A representave of Timchenko, who had served on the company's board of directors since 2009, declined to comment.
