Mark Zuckerberg
Technology executive · Computer programmer · Entrepreneur
b. 1984 · Born in White Plains, New York, United States · 3 min read
- Last verified: 12 November 2026
- Sources: 4
- Independently reviewed before publication
American programmer who co-founded Facebook in 2004 at Harvard and now leads Meta Platforms as chairman and CEO, owner of Facebook, Instagram and WhatsApp.
Early Life
Mark Elliot Zuckerberg was born on 14 May 1984 in White Plains, New York, and grew up in nearby Dobbs Ferry. He attended Phillips Exeter Academy, where he worked on software projects with classmates, and enrolled at Harvard University in 2002. At Harvard he studied computer science and psychology and became known as a prolific student programmer before leaving in 2004 to run Facebook full time.
Education
Zuckerberg attended Phillips Exeter Academy and enrolled at Harvard University in 2002, studying computer science and psychology. He left Harvard in 2004 without completing his degree. Harvard awarded him an honorary doctorate in 2017, when he delivered the commencement address.
Career
At Harvard, where he enrolled in 2002 to study computer science and psychology, Zuckerberg created campus software projects, including Facemash in 2003. On 4 February 2004 he launched thefacebook.com with fellow students Eduardo Saverin, Dustin Moskovitz, Chris Hughes and Andrew McCollum. He left Harvard in 2004 to run the company full time, moved it to Palo Alto, California, and renamed it Facebook in 2005. The company went public in May 2012. Under his leadership as chairman and chief executive, Facebook acquired Instagram in 2012 for about $1 billion and WhatsApp in 2014 for about $19 billion. In October 2021 the parent company was renamed Meta Platforms. In 2018 he testified before the United States Congress after reports that the data firm Cambridge Analytica had obtained Facebook user data. He remains chairman and chief executive of Meta Platforms as of November 2026.
Achievements
Zuckerberg's central achievement is building Facebook from a Harvard dormitory project into a global communications platform. Launched as thefacebook.com on 4 February 2004, it grew into the world's largest social network, and under his leadership the company acquired Instagram in 2012 and WhatsApp in 2014, and went public in May 2012. In October 2021 he renamed the parent company Meta Platforms to reflect a long-term focus on the metaverse and immersive technologies. With his wife, Priscilla Chan, he co-founded the Chan Zuckerberg Initiative in December 2015, pledging to give away 99% of their Facebook shares during their lifetimes to work in science, education and health.
Legacy
Zuckerberg is one of the defining technology founders of the social-media era: Facebook changed how billions of people communicate, share news and maintain relationships, and Meta's acquisitions made it one of the largest platform companies in the world. His career is also closely tied to public debate about privacy, data use, misinformation and competition in social media, including the Cambridge Analytica controversy and the antitrust scrutiny of Meta's acquisitions. Because he is a living person whose company and public roles change frequently, this profile records only documented milestones and will need regular updating from reliable sources.
Major Achievements
- Co-founded Facebook in 2004 while a student at Harvard University, and built it into the world's largest social network
- Took Facebook public in May 2012 and led its growth into Meta Platforms, owner of Facebook, Instagram, WhatsApp and Threads
- Oversaw the acquisitions of Instagram (2012), WhatsApp (2014) and Oculus (2014)
- Renamed the parent company Meta Platforms in October 2021 to focus on the metaverse and immersive technologies
- Co-founded the Chan Zuckerberg Initiative with Priscilla Chan in December 2015, pledging to give away 99% of their Facebook shares during their lifetimes
Contributions
Zuckerberg's work turned the college social directory into a global platform. Facebook's news feed, groups and messaging, together with Instagram and WhatsApp, made social networking a daily habit for billions of people, and Meta's shift toward virtual and augmented reality and artificial intelligence carries the same platform approach into new technologies.
Notable Works
- Facebook (co-founder, 2004)
- Meta Platforms (chairman and chief executive)
- Instagram (acquired 2012)
- WhatsApp (acquired 2014)
- Chan Zuckerberg Initiative (co-founder, 2015)
Milestones
- 1984 — Born on 14 May in White Plains, New York, United States Source: Encyclopaedia Britannica
- 2002 — Enrolled at Harvard University Source: Encyclopaedia Britannica
- 2004 — Launched thefacebook.com with fellow Harvard students Source: Encyclopaedia Britannica
- 2004 — Left Harvard to run Facebook full time Source: Encyclopaedia Britannica
- 2012 — Facebook went public in May; acquired Instagram Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)
- 2014 — Facebook acquired WhatsApp Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)
- 2015 — Co-founded the Chan Zuckerberg Initiative with Priscilla Chan Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)
- 2018 — Testified before the United States Congress after the Cambridge Analytica data controversy Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)
- 2021 — Parent company renamed Meta Platforms Source: Encyclopaedia Britannica
Timeline
- 14 May 1984
Born in White Plains, New York, United States
Source: Encyclopaedia Britannica - 2002
Enrolled at Harvard University to study computer science and psychology
Year only — exact date unknown Source: Encyclopaedia Britannica - 4 February 2004
Launched thefacebook.com with fellow Harvard students
Source: Encyclopaedia Britannica - 2004
Left Harvard to run Facebook full time; the company moved to Palo Alto, California
Year only — exact date unknown Source: Encyclopaedia Britannica - 2012-05
Facebook went public; married Priscilla Chan on 19 May 2012
Approximate date Source: Encyclopaedia Britannica; A Touch of Business biography - 2012
Facebook acquired Instagram
Year only — exact date unknown Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg) - 2014
Facebook acquired WhatsApp
Year only — exact date unknown Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg) - 2015-12
Co-founded the Chan Zuckerberg Initiative with Priscilla Chan
Approximate date Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg) - 2018
Testified before the United States Congress after the Cambridge Analytica data controversy
Year only — exact date unknown Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg) - 2021-10
Parent company renamed Meta Platforms
Approximate date Source: Encyclopaedia Britannica
Related Personalities
Frequently Asked Questions
Who is Mark Zuckerberg?
Mark Zuckerberg (born 1984) is an American technology executive and programmer who co-founded Facebook in 2004 while a student at Harvard University. He is chairman and chief executive of Meta Platforms, the parent company of Facebook, Instagram, WhatsApp and Threads.
Source: Encyclopaedia BritannicaWhen was Facebook founded?
Zuckerberg and fellow Harvard students launched thefacebook.com on 4 February 2004 as a directory for Harvard students. He left Harvard later that year to run the company, which was renamed Facebook in 2005 and opened to the general public in 2006.
Source: Encyclopaedia BritannicaWhat does Meta own?
Meta Platforms owns Facebook, Instagram, WhatsApp, Messenger and Threads, as well as the Reality Labs virtual- and augmented-reality business. Instagram was acquired in 2012 and WhatsApp in 2014.
Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)What is the Chan Zuckerberg Initiative?
The Chan Zuckerberg Initiative is a philanthropic organisation co-founded by Zuckerberg and his wife, Priscilla Chan, in December 2015. They pledged to give away 99% of their Facebook shares during their lifetimes, with work focused on science, education and health.
Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)Did Mark Zuckerberg graduate from Harvard?
No. He left Harvard in 2004, during his second year, to run Facebook full time. Harvard awarded him an honorary doctorate in 2017, when he delivered the commencement address.
Source: Encyclopaedia Britannica; Wikipedia (Mark Zuckerberg)Sources & References
- Mark Zuckerberg — Encyclopaedia Britannica — Encyclopaedia Britannica (accessed 12 November 2026)
- Mark Zuckerberg — Wikipedia (cross-check) — Wikipedia (accessed 12 November 2026)
- Mark Zuckerberg — EBSCO Research Starters biography — EBSCO (accessed 12 November 2026)
- File:Mark Zuckerberg (2025) (cropped).jpg — Wikimedia Commons (portrait file page) — Wikimedia Commons (accessed 12 November 2026)
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