To: Kirk © who wrote (91 ) 2/17/2012 6:26:57 PM From: Glenn Petersen 2 Recommendations Read Replies (2) | Respond to of 3779 Peter Thiel reportedly invested $500,000 in Facebook at a $4.8 million valuation. An alternative version of the story has him lending $700,000 to Mark Zuckerberg and eventually converting it into a 7.5% position in Facebook. Regardless of which version is correct, at the time of the S-1 filing he owned a 2.5% position. Not a bad return. I have yet to find a clean valuation time line. This one is not bad: Another from November 2010: May 2005: Facebook raises $12.7 million in venture capital from Accel Partners, at a rumored valuation of $100 million . April 2006: Facebook raises $27.5 million from Greylock Partners and Meritech Capital, for a reported $525 million pre-money valuation. October 2007: Microsoft invests $240 million for a 1.6% stake in Facebook, valuing the company at $15 billion . May 2009: Digital Sky Technologies invests $200 million for a 1.96% stake, bringing Facebook's value to $10 billion , a drop of more than $5 billion from Microsoft's investment. January 2010: Offers to buy Facebook's private company stock on SecondMarket place Facebook's valuation at $14 billion . June 2010: A report by Elevation Partners pegged Facebook's value at $23 billion . July 2010: A report by Next Up Research pegged Facebook's value at $12 billion . August 2010: Shareholder trading values Facebook at more than $33 billion . November 15, 2010: Facebook's worth pegged at $41 billion . November 19, 2010: Facebook shares sold at a $34 billion valuation. November 22, 2010: Investors sell portion of stake in Facebook at a price valuing Facebook at $35 billion . November 30, 2010: Facebook reaches value of $50 billion based on private market transactions. fastcompany.com