Mark Zuckerberg owns 28.2% of Facebook, Peter Thiel has 2.5%

Facebook CEO Mark Zuckerberg owns 28.2 percent of the company, according to Facebook’s just-released IPO S-1 filing with the Securities and Exchange Commission.
Facebook’s initial public offering is one of the most hyped technology events of the year, and the company is expected to debut on the stock market in May. Its stock ticker symbol will be “FB.” The company has not yet named a starting price has yet been named, but Facebook said in the filing that it expects to raise at least $5 billion in the IPO.