# Mark Zuckerberg, founder and CEO of the social networking site Facebook, was the 52nd richest men in the world in 2011 (according to Forbes) His personal fortune was estimated at $ 13.5 billion.

*business · news · 2026-04-13 · MarketScreener*

## Key points

- Mark Zuckerberg's personal fortune increased from $4 billion in 2010 to $13.5 billion in 2011.
- Microsoft acquired a 1.7% stake in Facebook for $280 million in 2007.
- A Chinese billionaire purchased approximately 0.8% of Facebook for $120 million.
- Facebook's revenue reached $500 million in 2009 with 500 million users by 2010.

**Companies:** Facebook, Microsoft
**Countries:** United States

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