Jack Patrick Dorsey (born November 19, 1976) is an American businessperson, who is a co-founder of Twitter, Inc., and was its CEO during 2007–2008 and 2015–2021 as well as co-founder, principal executive officer and chairman of Block, Inc. (developer of the Square financial services platform). He is also the founder of Bluesky. As of May 2025, Forbes estimated his net worth to be $3.8 billion. Early life. Dorsey was born and raised in St. Louis, Missouri. His father is Timothy G. Dorsey and his mother is Marcia A. Dorsey (née Smith).
https://en.wikipedia.org/wiki/Jack_Dorsey