«According to court records, Zuckerberg owns more than 400 million shares of Facebook. That would value his holdings at a minimum of $68.2 billion, based on the company’s closing share on Friday of $170.54.Zuckerberg said he wanted to help solve global challenges “like curing all diseases in our children’s lifetime and personalizing education for every student.”»

Source : Zuckerberg nixes new Facebook share class after shareholder lawsuit