Facebook announced that Digital Sky Technologies (DST), one of the leading internet investment groups globally with significant stakes in Eastern European and Russian internet businesses, has made a $200 million investment in Facebook in exchange for preferred stock, representing a 1.96% equity stake at a $10 billion valuation.

In addition, DST has indicated that it is planning to offer to purchase at least $100 million of Facebook common stock from existing common stockholders that would facilitate liquidity for current and former employees’ vested shares in the company. The details of the plan are expected to be announced to eligible participants during the summer. Consistent with Facebook’s practice with other recent investors, DST will not be represented on the Facebook board or hold special observer rights.

“This investment demonstrates Facebook’s ongoing success at creating a global network for people to share and connect,” said Facebook CEO Mark Zuckerberg.

Based in London and Moscow, DST is a well-respected investor in a number of successful internet companies, holding significant interests in Russia and Eastern Europe, such as Mail.ru, Forticom and vKontakte. DST’s main assets account for over 70 percent of all page views in the Russian-speaking internet and its social networks are the market leaders in more than 13 countries, addressing a combined population of more than 350 million.

DST is a privately held holding company backed by leading Russian and Western financial institutions. DST has offices in Moscow and London.