Billionaire Profile
Stewart Butterfield
Global Rank
#2657

Image: Unknown Author | CC BY 2.0 | via Wikimedia Commons

Stewart Butterfield

CEO, Messaging software
CANADA
Real-Time Net Worth
$1.493B
Estimated based on Messaging software stock value as of April 20, 2026
0% (24h)
Age
53
Source
Messaging software
Industry
Technology
Citizenship
CANADA

Biography

Stewart Butterfield is a Canadian billionaire businessman, best known for co-founding the photo-sharing website Flickr and the team-messaging application Slack. Born in Lund, British Columbia, in 1973, Butterfield's wealth source is primarily from Messaging software. His career began with website design and led to the co-founding of Ludicorp, which created Flickr. He then founded Tiny Speck, which developed the team communication platform Slack. Slack was acquired by Salesforce in 2021 for $27.7 billion. Butterfield's achievements include being named the Wall Street Journal's Technology Innovator in 2015 and his inclusion in the Time 100 list in 2006. He is married to Jen Rubio and has three children. As of 2024, his estimated net worth is $1.5 billion.

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

Wealth Over Time

In-Depth Profile

Early Life

Daniel Stewart Butterfield, born Dharma Jeremy Butterfield on March 21, 1973, in Lund, British Columbia, Canada, experienced a unique upbringing. He spent his early years in a log cabin without running water or electricity, living on a commune after his father fled the US to avoid the Vietnam War draft. He moved to Victoria at age five and began teaching himself to code, later changing his name to Stewart at 12. He attended St. Michaels University School and designed websites during his university years. He earned a B.A. in philosophy from the University of Victoria in 1996 and a Master of Philosophy from Clare College, Cambridge, in 1998.

Rise to Success

Butterfield co-founded Ludicorp in 2002, initially planning a massively multiplayer online game. However, the company shifted to photo-sharing, leading to Flickr's creation in 2004. Flickr revolutionized image sharing and was acquired by Yahoo! in 2005 for approximately $30 million. Butterfield remained as General Manager of Flickr until 2008. After leaving Yahoo!, he founded Tiny Speck, which developed Slack, a team communication platform. Slack was initially an internal tool used for a game called Glitch.

Key Business Strategies

Butterfield's strategic moves included pivoting from a failing game to creating Slack, which became a highly successful communication tool. Slack's growth was driven by its user-friendly interface, integration capabilities, and ability to replace email. The company adopted an equity-heavy compensation structure. It went public in 2019 and was later acquired by Salesforce for $27.7 billion in 2021.

Philanthropy

In 2021, Butterfield co-donated $25 million to UNICEF.

Career Milestones

2002

Co-founded Ludicorp

Co-founded Ludicorp, which later created Flickr.

2004

Co-founded Flickr

Launched photo-sharing website, which transformed the way people shared images.

2005

Flickr acquired by Yahoo!

Flickr was acquired by Yahoo for around $30 million; Butterfield became General Manager.

2009

Founded Tiny Speck

Founded Tiny Speck, which later developed Slack.

2013

Launched Slack

Launched Slack, a communication platform that rapidly gained popularity.

2019

Slack IPO

Slack went public through a direct listing on the NYSE.

2021

Slack acquired by Salesforce

Salesforce acquired Slack for $27.7 billion.

2022

Stepped down as CEO of Slack

Butterfield stepped down as CEO of Slack.

Philanthropy & Social Impact

Education and Technology

UNICEF Donation

$25M

Co-donated to UNICEF in 2021.

Business Philosophy & Leadership

Notable Quotes

"We may have failed, but we were incredibly productive."

Leadership Principles

Customer Focus

Prioritizing and responding to customer needs and feedback.

Product Design

Emphasis on human-centered communication and user experience.

Controversies & Challenges

2020

Abduction of Daughter

Butterfield's 16-year-old daughter went missing, but was found alive and a man was arrested for abduction.