Putin’s Palace – Wikipedia

Construction of “Putin’s Palace” – estimated cost of construction $1 billion, sold by Nikolai Shamalov for $350 million to Alexander Ponomarenko in 2011, Purchase of shares in Bank Rossiya by Nikolai Shamalov and Dmitry Gorelov. Total share as of 2006: Dmitry Gorelov 12.6%, Nikolay Shamalov 12.6% (see: history of Bank Rossiya).

https://en.wikipedia.org/wiki/Putin%27s_Palace