Sean Parker (born December 3, 1979) is an American entrepreneur and philanthropist best known for co-founding the file-sharing service Napster and serving as the first president of Facebook. He has founded or co-founded several other technology companies, including Plaxo, Causes, Airtime.com, and Brigade. Parker is also the founder and chairman of the Parker Foundation, which focuses on life sciences, global public health, and civic engagement. As of May 2025, Forbes estimated his net worth at US$3.0 billion.
Parker has been an active investor in technology startups, including those in the field of Artificial intelligence. His investments have spanned various sectors, and he has shown particular interest in ventures that leverage Machine learning and Deep learning technologies.
Early Life and Education
Parker was born in Herndon, Virginia, to Diane Parker, a TV advertising broker, and Bruce Parker, a U.S. government oceanographer. At age seven, his father taught him programming on an Atari 800. In his teens, Parker developed hobbies in hacking and programming, which led to an FBI visit when he was 16 after hacking into a Fortune 500 company's network; he was sentenced to community service.
He attended Oakton High School and later Chantilly High School, where he persuaded administrators to count coding time as a foreign language class. He won the Virginia state computer science fair for developing a web crawler and was recruited by the CIA. By his senior year, he was earning over $80,000 annually through various projects, leading his parents to allow him to skip college. He later referred to his Napster experience as "Napster University," where he learned intellectual property law, corporate finance, and entrepreneurship.
Napster and Early Ventures
At age 15, Parker met Shawn Fanning online, and they later co-founded Napster in June 1999. Parker raised the initial $50,000, and the service grew to tens of millions of users within a year. Lawsuits from the recording industry eventually shut it down, but Napster is credited with revolutionizing the music industry and is considered a precursor to services like iTunes.
In November 2002, Parker launched Plaxo, an online address book and social networking service that integrated with Microsoft Outlook. Plaxo was one of the first products to build virality into its launch, reaching 20 million users. Two years later, Parker was ousted by financiers Sequoia Capital and Ram Shriram in an acrimonious exit.
Facebook Presidency
In 2004, Parker discovered "The Facebook" through a friend and met with Mark Zuckerberg and Eduardo Saverin. He joined the five-month-old company as its president. Parker brought on Peter Thiel as the first investor and negotiated for Zuckerberg to retain control of the board, allowing Facebook to remain private. He championed the clean user interface and developed the photo-sharing function.
In 2005, Parker was arrested on suspicion of drug possession at a party but was not charged. This event pressured him to resign as president, though he continued to meet regularly with Zuckerberg. In 2017, Parker expressed concerns about Facebook's role in society, saying it "exploit[s] a vulnerability in human psychology" through a "social-validation feedback loop."
Later Ventures and Investments
In 2006, Parker became a managing partner at Founders Fund, a venture-capital fund founded by Peter Thiel. He invested in companies like Quantcast, Path, and Knewton before stepping down in 2014. In 2010, he invested in Spotify after being introduced to the Swedish music-streaming service, furthering Napster's music-sharing mission legally.
Parker has also founded Brigade, an online platform for civic engagement, and has been involved in various philanthropic efforts through the Parker Foundation. His interest in Generative AI and related technologies has led to investments in startups working on Large language model systems and other advanced AI applications.
Philanthropy and AI Interest
Through the Parker Foundation, Parker has funded initiatives in life sciences, global public health, and civic engagement. He has also supported research in Neural network technologies and has been a vocal advocate for responsible AI development. His investments in AI-related companies reflect his broader interest in transformative technologies that can reshape industries.
Parker's career has been marked by both controversy and innovation, from the disruptive impact of Napster to his role in scaling Facebook. His ongoing work in venture capital and philanthropy continues to influence the technology landscape, particularly in areas related to Artificial intelligence and its applications.