the public relations firm Brunswick in Vienna.
According to information compiled by the activists, P&A Corporate Trust is based at Proksch's Liechtenstein office.
Activ Solar emerged in 2008 from a string of transactions including an investment vehicle and a shell company that trace back to a firm owned by Sergiy Klyuev and his brother Andriy, Yanukovich's chief of staff. Its chief executive is Kaveh Ertefai, a former UBS investment banker and Sergiy Klyuev's son-in-law.
In a statement filed with Austrian authorities on Feb. 18, Activ Solar said that its business decisions are based on "demonstrably economic considerations rather than on family relationships."
Proksch said the company needed foreign corporate entities to make it easier for it to acquire solar technology.
In general, he said, the purpose of using companies outside Ukraine to transact business in the Ukraine or hold assets there was "to simplify things."
Proksch said he is in the running for a top counterterrorism post with the United Nations in Vienna.
He said repeatedly that there is voluminous financial documentation at his Liechtenstein office, which authorities will want to see.
"We have all the communications in Liechtenstein," he said.
The U.S. Treasury declined comment, and Liechtenstein authorities were not immediately available for comment.