Co-founder of Facebook with Harvard roommate Mark Zuckerberg.
He graduated with honors from Harvard University with a Bachelor of Arts in history and literature.
He helped run Barack Obama's 2008 presidential campaign social network My.BarackObama.com.
He married Sean Elridge in 2012. His father Arlen Hughes was a paper salesman, and his mother Brenda Hughes taught at a nearby public school.
He was portrayed by actor Patrick Mapel in the Academy Award-nominated film The Social Network, written by Aaron Sorkin.