Jack Dorsey (born November 19, 1976) is an American programmer and businessman widely known as a co-founder of Twitter, and as the founder and CEO of Square, a mobile payments company.[4] In 2008, he was named to the MIT Technology Review TR35 as one of the top 35 innovators in the world under the age of 35.[5] For 2012, The Wall Street Journal gave him the "Innovator of the Year Award" for technology.[6]