Zynga recently filed papers for 1.9 million shares of Series B-2 Preferred Stock. They’re seeking an issue price of $12.87 per share, implying a value of about $4 billion for the company based on the estimated 320 million outstanding shares.

This sort of issuance typically happens around a strategic partnership. Between games like FarmVille and Mafia Wars, Zynga has millions of players via Facebook.

Source: Business Insider