Gazprom Boris Yeltsin, the Russian President, appointed Chernomyrdin, Gazprom's Chairman, his Prime Minister, the company's political influence increased. Rem Viakhirev took the chairmanship of Gazprom's Board of Directors and Managing Committee. Following the Decree of the President of the Russian Federation of 5 November 1992 and the Resolution of the Government of Russia of 17 February 1993, Gazprom became a joint-stock company. Gazprom began to distribute shares under the voucher method. (Each Russian citizen received vouchers to purchase shares of formerly state-owned companies). By 1994, 33% of Gazprom's shares had been bought by 747,000 members of the public, mostly in exchange
Gazprom Neft These companies are developing fields in the Yamalo-Nenets and Khanty-Mansi autonomous areas and the Omsk, Tomsk, Tyumen and Irkutsk regions. Gazprom Neft also holds 50% stakes in three dependent companies: Slavneft, Tomskneft and Salym Petroleum Development. In 2010, Gazprom Neft partnered with Novatek to acquire 51%of SeverEnergia which owns Arktikgaz and Urengoil companies. In 2012, Gazprom Neft refined 43.3 million tonnes of oil. The company wholly or partly owns 5 oil refineries (the Omsk Oil Refinery, Moscow Oil Refinery, Slavneft-Yaroslavnefteorgsintez (YANOS) and two oil refineries in Pančevo and Novi Sad that belong to Naftna Industrija Srbije). The company operates around