BillionaireNet
Dorsey
Jack Dorsey
Rank #834
UNITED STATESSocial MediaTwitter, Block Inc.

Jack Dorsey

Net Worth
$4.87B
+0.63% (24h)
Jack Dorsey is an American entrepreneur and programmer. He is best known as the co-founder of Twitter (now X) and the founder of Block, Inc. (formerly Square). Dorsey's source of wealth is primarily derived from his stake in Block, Inc., and his previous involvement with Twitter. As of May 2025, his net worth is estimated at $3.8 billion. His career has been marked by significant achievements in the tech industry. He is known for his leadership in these companies. Dorsey is also involved in philanthropy, with a focus on global crisis relief, girls' health and education, and open internet development.

The Full Dossier

Early Life

Jack Patrick Dorsey was born on November 19, 1976, in St. Louis, Missouri. He was raised in a Catholic family and attended Bishop DuBourg High School. From a young age, Dorsey displayed a keen interest in computers and communications. He began programming at the age of 14, developing dispatch software.

Rise to Success

Dorsey's entrepreneurial journey began with the idea of Twitter while he was studying at New York University. He co-founded Twitter in 2006, serving as CEO from 2007 to 2008 and again from 2015 to 2021. Under his leadership, Twitter experienced substantial growth and became a prominent platform for communication and news. In 2009, he co-founded Square, Inc. (now Block, Inc.), a financial services company. Square's Square payment platform enabled merchants to accept debit and credit card payments on mobile devices.

Key Business Strategies

Dorsey's strategies have been marked by a focus on simplicity and innovation. With Twitter, he emphasized brevity and real-time communication, establishing a new form of social interaction. At Square, he simplified financial transactions for small businesses. He has also shown a commitment to decentralization and the potential of blockchain technology.

Philanthropy

Dorsey is actively involved in philanthropy through his initiative #startsmall, which supports global crisis relief, girls' health and education, and open internet development. He has donated millions to various causes, including COVID-19 relief and research. Dorsey has donated $750,000 to BBC Media Action for their work with independent media around the world. KANPE has received a generous donation of $5 million from Dorsey to support their work in Haiti. Dorsey’s #startsmall initiative has also invested $1 million into Camp Fire.

Career Timeline

2015-2021

CEO of Twitter

Returned as CEO of Twitter, leading the company through a period of significant change and growth.

2012

Innovator of the Year Award

Awarded "Innovator of the Year" for technology by The Wall Street Journal.

2009

Co-founded Square (now Block, Inc.)

Co-founded a financial services and mobile payment company.

2007-2008

CEO of Twitter

Served as the CEO of Twitter, overseeing the initial growth and development of the platform.

2006

Co-founded Twitter

Co-founded the social media platform that would revolutionize online communication.

Philanthropic Impact

Global Crisis Relief$1B

#StartSmall

A philanthropic initiative focusing on global crisis relief, girls' health and education, and open internet development.

Clean Water and Sanitation$4.7M

Water.org

Donation to support Water.org's initiatives for safe water and sanitation.

Media and Journalism$0.75M

BBC Media Action

Donation to support BBC Media Action's work with independent media around the world

Youth Development$1M

Camp Fire

Funding to support inclusive youth development nonprofit Camp Fire.

Empowering Women and Girls$5M

KANPE

To support KANPE's work of empowering girls and women in Haiti's Central Plateau

Wealth Trajectory