Mark Elliot Zuckerberg (born May 14, 1984) is an American businessman and programmer who co-founded the social media service Facebook and its parent company Meta Platforms. He is its chairman, chief executive officer (CEO), and controlling shareholder. Zuckerberg has been a central figure in the technology industry since the early 2000s, and his company has expanded into areas including artificial intelligence research and development.
Zuckerberg briefly attended Harvard College, where he launched Facebook in February 2004 with his roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. He took the company public in May 2012 with majority shares. He became the world's youngest self-made billionaire in 2008 at age 23 and has consistently ranked among the world's wealthiest people. According to Forbes, his estimated net worth stood at US$220 billion as of December 2025. He has used his funds to organize multiple large donations, including the establishment of the Chan Zuckerberg Initiative. A film based on his early career, The Social Network, was released in 2010. His prominence and fast rise in the technology industry has prompted political and legal attention, including lawsuits regarding the creation and ownership of the website and issues such as user privacy.
Early Life and Education
Zuckerberg was born in White Plains, New York, to Jewish parents Dr. Edward Zuckerberg, a dentist, and Karen (née Kempner), a psychiatrist. He and his three sisters (Arielle, Randi, and Donna) were raised in a Reform Jewish household in Dobbs Ferry, New York. Their great-grandparents were emigrants from Austria, Germany, and Poland. Zuckerberg initially attended Ardsley High School before transferring to Phillips Exeter Academy, where he was captain of the fencing team.
Zuckerberg learned computer programming in his childhood. At about age eleven, he created "ZuckNet," a program that allowed computers at the family home and his father's dental office to communicate. During high school, he built a music player called the Synapse Media Player, which used machine learning to learn the user's listening habits. The device was posted to Slashdot and received a rating of 3 out of 5 from PC Magazine. The New Yorker once said of Zuckerberg, "some kids played computer games. Mark created them." While still in high school, he attended Mercy College taking a graduate computer course on Thursday evenings.
Harvard and the Birth of Facebook
By the time Zuckerberg began classes at Harvard in 2002, he had already achieved a "reputation as a programming prodigy," according to The New Yorker. He studied psychology and computer science, resided in Kirkland House, and belonged to Alpha Epsilon Pi. In his second year, he wrote a program called CourseMatch, which allowed users to make class selection decisions based on the choices of other students and help them form study groups. Later, he created a different program initially called Facemash that let students select the best-looking person from a choice of photos. The site went up over a weekend, but by Monday morning, the college shut it down because its popularity had overwhelmed one of Harvard's network switches, preventing students from accessing the Internet. Many students complained that their photos were used without permission, and Zuckerberg apologized publicly.
In January 2004, Zuckerberg began writing code for a new website. On February 4, 2004, he launched "Thefacebook," originally located at thefacebook.com, in partnership with his roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes. An earlier inspiration may have come from Phillips Exeter Academy, which published its own student directory, "The Photo Address Book," referred to as "The Facebook." Six days after launch, three Harvard seniors - Cameron Winklevoss, Tyler Winklevoss, and Divya Narendra - accused Zuckerberg of intentionally misleading them into believing he would help build a social network called HarvardConnection.com, while using their ideas to build a competing product. They filed a lawsuit that resulted in a settlement of 1.2 million Facebook shares and $20 million in cash (equivalent to $28,047,543 in 2025).
Zuckerberg's Facebook started as a "Harvard thing" until he decided to spread it to other schools, enlisting the help of Dustin Moskovitz. They began with Columbia University, New York University, Stanford University, Dartmouth College, Cornell University, University of Pennsylvania, Brown University, and Yale University. Zuckerberg dropped out of Harvard in his second year to complete the project, and the co-founders moved to Palo Alto, California. Over the summer, Zuckerberg met Peter Thiel, who invested in the company. They got their first office in mid-2004. According to Zuckerberg, the group planned to return to Harvard but eventually decided to remain in California, where he appreciated the "mythical place" of Silicon Valley. The same year, speaking at Y Combinator's Startup School at Stanford, Zuckerberg made a controversial assertion that "young people are just smarter."
Facebook's Growth and Public Offering
Facebook expanded rapidly, and by July 21, 2010, Zuckerberg reported that the platform had reached the 500-million-user mark. In April 2009, he had sought the advice of former Netscape CFO Peter Currie regarding financing strategies. The company went public in May 2012, with Zuckerberg retaining majority shares. Over the years, Facebook acquired major platforms such as Instagram and WhatsApp, and it became a dominant force in social media and digital advertising. Zuckerberg's leadership has been marked by a focus on connecting people globally, but also by controversies over privacy, data handling, and the spread of misinformation.
Meta Platforms and Artificial Intelligence
In October 2021, Zuckerberg renamed the parent company to Meta Platforms, signaling a shift toward the metaverse and generative AI technologies. Under his direction, Meta has invested heavily in AI research, including large language models and deep learning. Meta's AI research labs have contributed to open-source projects and published papers in areas such as transformers and neural networks. Zuckerberg has stated that AI is central to Meta's future, from content recommendation to augmented reality. The company has also developed custom silicon for AI workloads, competing with other tech giants.
Zuckerberg's interest in AI predates Meta; his early Synapse player used machine learning, and he has consistently hired experts in the field. Meta's AI efforts include the development of the OPT and LLaMA language models, which are used in research and product features. These models are examples of large language models that rely on transformer architectures and multi-head attention. Meta has also explored reinforcement learning from human feedback and other techniques to improve model alignment.
Philanthropy and Public Influence
Zuckerberg and his wife, Priscilla Chan, established the Chan Zuckerberg Initiative in 2015, pledging to give away 99% of their Facebook shares over their lifetimes. The initiative focuses on education, health, and scientific research, including efforts to cure disease and personalize learning. Zuckerberg has donated to various causes, including COVID-19 relief and disaster response. His philanthropic work has been praised, though some critics have noted the influence of his wealth on public policy.
Zuckerberg's public persona has been shaped by his appearances before Congress and the European Parliament regarding privacy and election interference. He has also been the subject of documentaries and books, and The Social Network (2010) dramatized his early years. His leadership style and decisions continue to attract scrutiny, particularly regarding free speech, content moderation, and the impact of social media on democracy.
Legal Issues and Privacy Concerns
Zuckerberg has faced multiple lawsuits beyond the Winklevoss case. These include shareholder lawsuits, privacy complaints, and regulatory actions. The Cambridge Analytica scandal in 2018 revealed that user data was harvested without consent, leading to congressional hearings and a $5 billion fine from the Federal Trade Commission. Zuckerberg has testified that Facebook has improved its privacy practices, but ongoing legal challenges persist in various jurisdictions.
Personal Life and Legacy
Zuckerberg married Priscilla Chan in 2012, and they have two daughters. He is known for his casual attire and his personal goals, such as learning Mandarin and reading a book every two weeks. His legacy is tied to the transformation of social interaction and the rise of the digital economy. As of 2025, he remains one of the most influential figures in technology, with his company's AI research contributing to the broader field of artificial intelligence.
Zuckerberg's impact extends to the AI ecosystem, where Meta's open-source models have been used by researchers and startups. His investments in AI infrastructure, including data centers and chips, have positioned Meta as a major player in the AI race alongside companies like OpenAI and Google DeepMind. While his focus has shifted toward the metaverse and AI, his foundational role in social media remains his most enduring contribution.