Semyon Mikhailovich Vainshtok (born October 5, 1947) is a Russian-Israeli industrialist, former head of the state-controlled companies Transneft (1999–2007) and Olympstroy [ru] (2007–2008).

[5] Deputy Chairman of the Accounts Chamber of Russia Valery Goreglyad confirmed "serious violations," resulting in damages of about 3.5 billion rubles.

[6] However, Chairman Sergei Stepashin denied Navalny's claim of $4 billion stolen, stating that "after the violations were eliminated, the project was implemented quite well.

From September 11, 2007 to April 17, 2008, he was president of the State Corporation for the Construction of Olympic Facilities and Development of Sochi as a Mountain Climatic Resort.

[8] In August 2010, Vainshtok became chairman of the board of directors of the Israeli company Israel's Financial Levers ("Manofim Finansim Le-Israel").