Mark Zuckerberg is an American technology entrepreneur and philanthropist. He is best known as the co-founder and CEO of Facebook, which he launched in 2004 while studying at Harvard University. Under Zuckerberg’s leadership, Facebook has grown into one of the largest social networking companies in the world, with over 2.8 billion monthly active users. In addition to his work at Facebook, Zuckerberg is also involved in several philanthropic efforts, including the Chan Zuckerberg Initiative, which he founded with his wife, Priscilla Chan, to advance human potential and promote equality. He has an estimated net worth of over $100 billion.