Billionaire Profile
Jack Dorsey
Global Rank
#644

Image: Public domain | via Wikimedia Commons

Jack Dorsey

CEO, Twitter
UNITED STATES
Real-Time Net Worth
$6.411B
Estimated based on Twitter stock value as of April 20, 2026
+2.04% (24h)
Age
49
Source
Twitter, Square
Industry
Social Media
Citizenship
UNITED STATES

Biography

Jack Dorsey is a prominent American businessman, entrepreneur, and philanthropist, best known as the co-founder of Twitter (now X) and the founder and chairman of Block, Inc. (formerly Square). Born in St. Louis, Missouri, on November 19, 1976, Dorsey's career has been marked by innovation in the tech industry. His source of wealth stems from his ventures in Twitter and Square, with a current estimated net worth of $5.7 billion. Dorsey is recognized for his leadership and contributions to the fields of social media and financial technology.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life

Jack Dorsey was born and raised in St. Louis, Missouri. From a young age, he showed a keen interest in computers and communication. He attended Bishop DuBourg High School and developed software for dispatch logistics, which was used by taxicab companies. He briefly attended the University of Missouri–Rolla and later transferred to New York University, but dropped out before graduating to focus on his entrepreneurial pursuits.

Rise to Success

Dorsey's breakthrough came with the co-founding of Twitter in 2006, which quickly became a global platform for real-time communication. He served as CEO of Twitter from 2007 to 2008, and again from 2015 to 2021. In 2009, Dorsey co-founded Square (now Block, Inc.), a financial services and mobile payment company. Square's success further solidified his position in the tech industry.

Key Business Strategies

Dorsey is known for his focus on simplicity and user experience. He emphasized iterative product development and a commitment to details. His leadership style often included an emphasis on decentralization and empowering users. He stepped down as Twitter CEO in 2021, which allowed him to focus on Block, Inc. and Bitcoin initiatives. Dorsey has also shown a strong interest in the future of the internet and open-source development.

Philanthropy

Dorsey has engaged in significant philanthropic efforts, notably through his #startsmall initiative. In 2020, he committed to donating $1 billion (28% of his wealth) to various causes, including COVID-19 relief, girls' health and education, and universal basic income programs. He has made several donations to organizations like Water.org and Good Sports.

Career Milestones

2006

Co-founded Twitter

Co-founded the social media platform that revolutionized communication.

2009

Co-founded Square (now Block, Inc.)

Launched a financial services company focused on mobile payments.

2012

Named Innovator of the Year

Received the Innovator of the Year Award from the Wall Street Journal for his work in technology.

2015

Returned as Twitter CEO

Returned as the CEO of Twitter and led the company for six more years.

2021

Stepped down as Twitter CEO

Focused on Block, Inc. and other ventures.

Philanthropy & Social Impact

Various

#StartSmall

$1B

A philanthropic initiative focused on global COVID-19 relief, girls' health and education, and efforts toward Universal Basic Income.

Global Health

Water.org

$4.7M

Donation to Water.org to provide access to safe water and sanitation as part of his #StartSmall initiative.

Youth Development

Camp Fire

$1M

Donation to support inclusive youth development and expanding opportunities.

Youth Sports

Good Sports

$1M

Funds will support the She Who Plays initiative which focuses on creating gender equity in youth sports.

Business Philosophy & Leadership

Notable Quotes

"“Make every detail perfect and limit the number of details to perfect.”"

"“Expect the unexpected. And whenever possible, be the unexpected.”"

"“You don't have to start from scratch to do something interesting.”"

Leadership Principles

Focus on Simplicity

Prioritizing essential features and user experience.

Embrace Constraints

Using limitations as a catalyst for creativity and innovation.

Prioritize Execution

Focus on turning ideas into reality through effective action.

Controversies & Challenges

2008

Ousting as Twitter CEO

Dorsey was removed as CEO of Twitter in 2008, which was later described as painful.

Various

Twitter's Growth and Challenges

Dorsey faced criticism over Twitter's growth, content moderation, and user engagement during his tenure as CEO.