Facebook Founder Mark Zuckerberg makes $1.2BILLION on his 31st birthday..
. Mark Zuckerberg celebrated his 31st birthday with a billion dollar gift - $1.2billion, to be exact.
Facebook's shares jumped $2.93 yesterday to $81.37, translating into a billion dollar gain for it's founder and CEO, who happens to own 426.3 million of them.
The stock's rise was the cherry on top of Zuckerberg's 30th year, which saw his shares jump $9.4billion in value in addition to his $610,455 annual salary, according to USA Today Money.
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