Mark Elliot Zuckerberg (born May 14, 1984) is an American computer programmer and Internet entrepreneur. He is the chairman, chief executive officer, and co-founder of Facebook. His net worth is estimated to be US$58.6 billion as of March 2017, ranking him the fifth richest person in the world.
Zuckerberg launched Facebook from his Harvard University dormitory room on February 4, 2004. He was assisted by his college roommates and fellow Harvard students Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. The group then introduced Facebook to other college campuses. Facebook expanded rapidly, reaching one billion users by 2012. Meanwhile, Zuckerberg was involved in various legal disputes brought 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 that over the course of their lives they would give the majority of their wealth to “advancing human potential and promoting equality” in the spirit of The Giving Pledge. On December 1, 2015, they announced they would eventually give 99 percent of their Facebook shares (worth about US$45 billion at the time) to the Chan Zuckerberg Initiative.