American Ethane Company website nor by its publications although these foreigners have significant interests in American Ethane. Finally, Konstantin Nikolaev is a partner and close associate of Vladimir Putin's inner circle through Igor Levitin, Alexey Mordashov, Arkady Rotenberg, and Gennady Timchenko. American Ethane Company American Ethane Company, LLC (AEC) is the largest producer of ethane in the United States. It is a Houston, Texas, based American petroleum company established in January 2014 with offices in New Orleans. It is privately held with large investments from Russian oligarchs who are close to Vladimir Putin's inner circle. As of July 2018, Konstantin Nikolaev, Mikhail Yuriev,
Arkady Rotenberg of Rotenberg's real estate, including four villas in Sardinia and Tarquinia, and a hotel in Rome. The Russian State Duma then proposed a bill, known as the Rotenberg Law, allowing sanctioned Russians to get compensated by the state, but it was declined. Rotenberg's personal wealth has been estimated in 2018 at $3.1 billion. He was formerly married to his second wife Natalia Rotenburg, who is about 30 years his junior. They were divorced about 2015 in the U.K. While the financial details of the divorce are private, the agreement includes division of the use of a £35 million Surrey mansion