Cameron Winklevoss

Cameron Howard Winklevoss was born on August 21, 1981, in Southampton, New York, and raised in Greenwich, Connecticut. He is the son of Carol (née Leonard) and Howard Winklevoss. Howard was an adjunct professor of actuarial science at the Wharton School of the University of Pennsylvania. At an early age, he (left-handed) and his identical "mirror-image" twin brother Tyler (right-handed) demonstrated a pattern of teamwork, building Lego together and playing musical instruments. At the age of 13, they taught themselves HTML and started a web-page company, which developed websites for businesses.

Winklevoss went to the Greenwich Country Day School before attending the Brunswick School for high school. He showed a fondness for the classics in high school, studying Latin and Ancient Greek. During his junior year, he co-founded the crew program with his brother.

On June 14, 2002, Winklevoss's older sister, Amanda, died from cardiac arrest induced by drug overdose.

He enrolled at Harvard University in 2000 for his undergraduate studies where he majored in economics, earning an AB degree and graduating in 2004. At Harvard, he was a member of the men's varsity crew, the Porcellian Club and the Hasty Pudding Club.

In 2009, Winklevoss entered the Saïd Business School at the University of Oxford where he obtained an MBA in 2010. While at Oxford he was an Oxford Blue, and rowed, in a losing effort, in the Blue Boat in the 156th Oxford-Cambridge Boat Race.

In the first half of 2025, Winklevoss and his brother Tyler each donated around $500,000 to MAGA Inc., a super PAC that supports Donald Trump.

In October 2025, Winklevoss and his brother Tyler were named by the White House as donors to the construction of the White House State Ballroom, a proposed 90,000-square-foot expansion of the East Wing.

Facebook lawsuits

In 2004, ConnectU filed a lawsuit against Facebook alleging that creator Mark Zuckerberg had broken an oral contract with them. The suit alleged that Zuckerberg had copied their idea and illegally used source code intended for the website he was hired to create. Facebook countersued in regard to Social Butterfly, a project put out by The Winklevoss Chang Group, an alleged partnership between ConnectU and i2hub, another campus service. It named among the defendants ConnectU, Cameron Winklevoss, Tyler Winklevoss, Divya Narendra, Winston Williams, and Wayne Chang, founder of i2hub. A settlement agreement for both cases was reached in February 2008, reportedly valued at $65 million. However, in May 2010, it was reported that ConnectU accused Facebook of securities fraud on the value of the stock that was part of the settlement and wanted to get the settlement undone. According to ConnectU's allegations, the value of the stock was worth $11 million instead of $45 million that Facebook presented at the time of settlement. This meant the settlement value, at the time, was $31 million, instead of the $65 million. On August 26, 2010, The New York Times reported that Facebook shares were trading at $76 per share in the secondary market, putting the total settlement value at close to $120 million. If the lawsuit to adjust the settlement to match the difference were to go through, the value would quadruple to over $466 million. According to Steven M. Davidoff, "Facebook never represented its valuation in this negotiation, and so there is no prior statement that the company needs to correct." Additionally, Cameron publicly announced that he fully supports Facebook.

After defeat at the appellate court level, the Winklevoss twins decided to petition the Supreme Court of the United States to hear the case, but in June 2011 announced that they had changed their minds.

Quinn Emanuel lawsuits

One of ConnectU's law firms, Quinn Emanuel, inadvertently disclosed the confidential settlement amount in marketing material by printing "WON $65 million settlement against Facebook". Quinn Emanuel sought $13 million of the settlement as its fee. ConnectU fired Quinn Emanuel and sued the law firm for malpractice. On August 25, 2010, an arbitration panel ruled that Quinn Emanuel "earned its full contingency fee". It also found that Quinn Emanuel committed no malpractice.