Mark Elliot Zuckerberg is an American programmer, Internet entrepreneur, executive, and philanthropist. He is the chairman, chief executive officer, and co-founder of social networking website Facebook. His net worth is estimated to be US$54.5 billion as of September 2016, ranking him as the 5th richest person in the world.
Together with his college roommates and fellow Harvard University students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, he launched Facebook from Harvard’s dormitory rooms. The group then introduced Facebook to other campuses. Facebook expanded rapidly, with one billion users by 2012. Zuckerberg was involved in various legal disputes that were initiated by others in the group, who claimed a share of the company based upon their involvement during the development phase of Facebook.
In December 2012, Zuckerberg and his wife Priscilla Chan announced they would give the majority of their wealth over the course of their lives to “advancing human potential and promoting equality” in the spirit of The Giving Pledge. On December 1, 2015, they announced they would give 99% of their Facebook shares (worth about $45 billion at the time) to the Chan Zuckerberg Initiative.Source: Everipedia