Jack Dorsey

Jack Patrick Dorsey is an American computer programmer and Internet entrepreneur who is the co-founder and CEO of Twitter, and the founder and CEO of Square, a mobile payments company.

  • Tattooed entrepreneur Jack Dorsey has been CEO of both social media firm Twitter and small business payments company Square since 2015.
  • Dorsey cofounded Twitter in 2006 with Ev Williams, Biz Stone and Noah Glass, and was CEO until 2008. He returned in 2015.
  • Dorsey cofounded Square with Jim McKelvey in 2009, then took it public in 2015.
  • Before gravitating to tech, Dorsey was a certified masseur and dabbled in fashion design.
  • In 2016, Dorsey gave one third of his Twitter shares to employees.