Jack Patrick Dorsey (born November 19, 1976)[4] is an American Internet entrepreneur, philanthropist, programmer who is a co-founder and former CEO of Twitter, Inc., as well as co-founder, principal executive officer and chairperson[5] of Block, Inc., which is the developer of the Square financial services platform. He is also on the board of directors of Bluesky Social.[3] As of October 2023, For