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Jack Dorsey


Jack Patrick Dorsey (born November 19, 1976) is an American computer programmer and Internet entrepreneur who is co-founder and CEO of Twitter, and founder and CEO of Square, a mobile payments company.

Dorsey was born and raised in St. Louis, Missouri, the son of Tim and Marcia (nee Smith) Dorsey. He is of English, Irish and Italian descent. His father worked for a company that developed mass spectrometers and his mother was a homemaker He was raised Catholic, and his uncle is a Catholic priest in Cincinnati. He attended the Catholic Bishop DuBourg High School.

While working on dispatching as a programmer, Dorsey moved to California. In 2000, Dorsey started his company in Oakland to dispatch couriers, taxis, and emergency services from the Web. His other projects and ideas at this time included networks of medical devices and a "frictionless service market". In July 2000, building on dispatching and inspired in part by LiveJournal and by AOL Instant Messenger, he had the idea for a Web-based realtime status/short message communication service.

On October 16, 2008, Williams took over as CEO, while Dorsey became chairman of the board. On March 28, 2011, Dorsey returned to Twitter as Executive Chairman after Dick Costolo replaced Williams as CEO. On June 10, 2015, Costolo announced that he was resigning as CEO of Twitter, effective July 1, 2015. Dorsey would assume the post of Interim CEO upon Costolo's departure. He was named permanent CEO of Twitter on October 5, 2015. On the day after the controversy about Twitter's new algorithms for tweets, Dorsey said it was only a hoax.

In March 2018, Dorsey announced that an improved version of the verification system is coming to Twitter. The purpose of redesigning verification is to let people verify more facts about themselves, emphasizing proof of identity. The overhaul was not in place before the U.S midterm election of 2018 to help in verifying the identities of the candidates.

Dorsey, along with co-founder Jim McKelvey, developed a small business platform to accept debit and credit card payments on a mobile device called Square, released in May 2010. The small, square-shaped device attaches to iPhone, iPad, iPod Touch, or Android devices via the headphone jack, and as a mini card reader, allows a person to swipe their card, choose an amount to transfer to the recipient and then sign their name for confirmation. Square is also a system for sending paperless receipts via text message or email, and is available as a free app for iOS and Android OS. The company grew from 10 employees in December 2009 to over 100 by June 2011. Square's office is on Market Street in San Francisco. In September 2012, Business Insider magazine valued Square Inc. at US$3.2 billion. Dorsey is CEO of Square, Inc. On October 14, 2015, Square filed for an IPO to be listed on the New York Stock Exchange. As of that date, Dorsey owned 24.4% of the company.

In 2012, Dorsey moved to the Sea Cliff neighborhood of San Francisco with sweeping views of the Golden Gate, Marin Headlands and Pacific Ocean. He walks five miles to work each morning and calls it a "very clearing time". He is a fan of Kendrick Lamar's music and of French radio station FIP. In late 2017, Dorsey completed ten days of meditation known as Vipassana taught by followers of S. N. Goenka.