Founders

Jack Patrick Dorsey is an American Internet entrepreneur, philanthropist, and programmer, who is a co-founder and former CEO of Twitter, Inc. from 2015 until 2021, as well as co-founder, principal executive officer and chairperson of Block, Inc., which is the developer of the Square financial services platform.

In addition to his work with Twitter, Dorsey is also a co-founder, principal executive officer, and chairperson of Block, Inc., the company behind the Square financial services platform.