Venture capital investors in Facebook include Accel Partners, Andreessen Horowitz, Elevation Partners, Founders Fund, Greylock Partners, Kleiner Perkins Caufield & Byers, Meritech Capital Partners, Millennium Technology Value Partners and Technology Crossover Ventures.
Link to S-1/A registration statement: http://www.sec.gov/Archives/edgar/data/1326801/000119312512208192/d287954ds1a.htm
Links to prior posts on Facebook:
http://www.allenlatta.com/1/post/2012/05/facebook-roadshow-imminent-ipo-target-may-18.html
http://www.allenlatta.com/1/post/2012/04/facebook-targeting-may-17-ipo-date-techcrunch.html http://www.allenlatta.com/1/post/2012/04/the-rationale-behind-facebooks-acquisition-of-instagram.html
http://www.allenlatta.com/1/post/2012/03/facebooks-updated-ipo-registration-statement.html
http://www.allenlatta.com/1/post/2012/2/facebook-files-for-ipo.html