In May 2012, Facebook went public with an Initial Public Offering (IPO), selling company shares on the NASDAQ stock exchange.It raised over $16 billion,making it the third-largest IPO in U.S.history.While founder Mark Zuckerberg sold some 30 million shares during the offering (for $1.15 billion),he continues to own approximately 22 percent of the company,but has power over 57 percent of the voting stock, effectively giving him control of the company.