Evan Clark "Ev" Williams (born March 31, 1972) is an American billionaire technology entrepreneur.[1] He is a co-founder of Twitter, and was its CEO from 2008 to 2010, and a member of its board from 2007 to 2019.[2] He founded Blogger and Medium. In 2014, he co-founded the venture capital firm Obvious Ventures. As of February 2022, his net worth is estimated at US$2.1 billion.[2] Williams was born