Gazprom Neft attempted a merger with Yukos that would have created Russia's largest oil company, YukosSibneft. The first attempt in 1998 failed over a management dispute, while second time round Sibneft's shareholders called off the deal in November 2003 after the federal government cracked down on Yukos despite the process already being well under way. In September 2005, Gazprom bought 75.7% of Sibneft's shares from Millhouse Capital (Roman Abramovich’s investment vehicle) for US$13.1 billion in Russia's largest corporate takeover. In May 2006, Sibneft was renamed Gazprom Neft. In 2006 Alexander Dyukov was elected as CEO of the company and in 2008 he
Gazprom from his position as the Chairman of the Gazprom board. The Russian Government's stock in Gazprom gave Putin the power to vote out Vyakhirev. Chernomyrdin and Vyakhirev were replaced by Dmitry Medvedev and Alexei Miller. They were Putin's prior employees in Saint Petersburg. Putin's actions were aided by the shareholder activism of Hermitage Capital Management Chief Executive Officer William Browder, and the former Russian Finance Minister Boris Fyodorov. Miller and Medvedev were to stop asset stripping at Gazprom and to recover losses. Itera was denied access to Gazprom's pipelines and came close to bankruptcy. Itera agreed to return stolen assets