Facebook Inc. sold 180 million of its shares in its initial public stock offering. Another 241.2 million came from existing stockholders, including the company's earliest investors and CEO Mark Zuckerberg. Except for Zuckerberg, those stockholders will be eligible to sell additional shares — up at 271 million combined — starting Thursday.

Here's a look at early Facebook Inc. investors who sold stock in the IPO:

— Mark Zuckerberg

Number of shares sold in IPO: 30.2 million

— James Breyer and Accel Partners, where he's a partner

Year invested in Facebook: 2005

Number of shares sold: 57.7 million

— Peter Thiel, managing partner at The Founders Fund and PayPal co-founder

Year invested in Facebook: 2004

Amount invested: $500,000

Number of shares sold in IPO: 16.8 million

— DST Global Ltd. and affiliates, a London-based investment firm focused on Internet companies, founded by Russian investor Yuri Milner

Year invested in Facebook: 2009 and late 2010

Number of shares sold in IPO: 45.7 million

— Goldman Sachs and affiliates, investment bank and one of the IPO's underwriters

Year invested in Facebook: 2011

Number of shares sold in IPO: 24.3 million

— Elevation Partners, private equity firm focused on media and technology and affiliates

Year invested in Facebook: Undisclosed

Number of shares sold: 4.6 million

— Greylock Partners, Silicon Valley venture capital firm and affiliates

Year invested in Facebook: 2006

Number of shares sold: 7.6 million

— Mail.ru Group Ltd., Russian Internet company

Year invested in Facebook: 2009

Number of shares sold: 19.6 million

— Mark Pincus, Zynga Inc. CEO

Year invested in Facebook: 2004

Number of shares sold: 1 million

— Meritech Capital Partners, venture capital firm focused on late-stage investments

Year invested in Facebook: 2006

Number of shares sold: 7 million

— Microsoft Corp.

Year invested in Facebook: 2007

Amount invested: $240 million

Number of shares sold: 6.6 million

— Reid Hoffman, co-founder of LinkedIn Corp. and affiliates

Year invested in Facebook: 2004

Number of shares sold: 942,784

— Tiger Global Management, New York-based investment firm

Year invested in Facebook: Undisclosed

Number of shares sold: 19.1 million

— Other, smaller stockholders are offered another 76,635 shares

Source: Facebook Inc. and Associated Press research