Mark Elliot Zuckerberg (born May 14, 1984) is an American businessman and programmer, best known as the co-founder, chairman, and CEO of Meta Platforms (formerly Facebook). Zuckerberg launched Facebook in February 2004 with roommates while attending Harvard University. He dropped out of Harvard to pursue Facebook full-time and moved the company to Palo Alto, California. Facebook rapidly gained users, attracting attention from major tech companies, but Zuckerberg declined offers to sell. Zuckerberg took Meta public in May 2012, retaining majority shares. His estimated net worth is around $220 billion as of late 2025, consistently ranking him among the world's wealthiest individuals.
Zuckerberg's leadership has been pivotal in Meta's growth and expansion into areas like virtual reality and artificial intelligence. He changed Facebook's name to Meta in 2021, signaling a focus on the metaverse, integrating physical and digital realms through virtual reality. Meta has launched virtual 3D spaces and is investing heavily in AI, including plans to build a large data center in Louisiana. Zuckerberg and his wife, Priscilla Chan, established the Chan Zuckerberg Initiative (CZI) in 2015, pledging to donate 99% of their Facebook shares to philanthropy, focusing on promoting equality and advancing human potential. CZI is directing significant resources towards biomedical AI research, including a recent $50 million donation to Sacramento State University for STEM and AI facilities. Zuckerberg has also reportedly grown closer to former U.S. President Donald Trump in his second term, visiting Trump's Mar-a-Lago club.