Billionaire Profile
Stewart Butterfield
Global Rank
#2494

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

Stewart Butterfield

CEO, Messaging software
CANADA
Real-Time Net Worth
$1.517B
Estimated based on Messaging software stock value as of March 6, 2026
+0.7% (24h)
Age
52
Source
Messaging software
Industry
Technology
Citizenship
CANADA

Biography

Stewart Butterfield is a Canadian entrepreneur and visionary leader in the tech industry, best known for co-founding Flickr, the pioneering photo-sharing platform, and Slack, a team communication software that revolutionized workplace collaboration. Born on March 21, 1973, Butterfield has a net worth of $1.7 billion as of March 2024. His source of wealth stems from his innovative contributions to messaging software and his leadership in these successful ventures. Butterfield's career is marked by his ability to identify opportunities, pivot from initial concepts, and build products that resonate with users. He holds degrees in philosophy from the University of Victoria and the University of Cambridge. Butterfield is married and has three children.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life and Education

Dharma Jeremy Butterfield, now known as Stewart Butterfield, was born on March 21, 1973, in Lund, British Columbia, Canada. He spent his early childhood in a remote log cabin, an experience that shaped his unique perspective. At the age of 12, he legally changed his first name to Stewart. Butterfield pursued higher education, earning a Bachelor of Arts degree in philosophy from the University of Victoria in 1996, followed by a Master of Philosophy from Clare College, Cambridge, in 1998.

Rise to Success

Butterfield's career began with website design during the early days of the internet. He later co-founded Ludicorp with Caterina Fake and Jason Classon in 2002. Initially, they aimed to create an online video game, but the project was unsuccessful. However, the team's ability to pivot led them to develop Flickr, a photo-sharing platform launched in 2004. Flickr quickly gained popularity, and in 2005, Yahoo! acquired Ludicorp and Flickr for a reported $20 million. Butterfield served as the General Manager of Flickr at Yahoo! until 2008.

In 2009, Butterfield co-founded Tiny Speck and began working on a multiplayer game called Glitch. While Glitch didn't achieve significant success, the internal communication tool created for its development became the foundation for Slack. Launched publicly in February 2014, Slack quickly transformed workplace communication with its user-friendly interface and integration capabilities. By 2015, Slack had a valuation exceeding $1 billion and was named Inc. Magazine's Company of the Year.

Key Business Strategies

Butterfield's success can be attributed to several key business strategies. He has emphasized creating products that people enjoy using, even in a business context. He fostered a culture of innovation, allowing for developer integrations and custom apps. Butterfield also embraced the ability to pivot and recognize unexpected opportunities, as demonstrated by his transitions from Game Neverending to Flickr and from Glitch to Slack. Customer feedback played a central role in shaping Slack's development, and Butterfield has been known for his transparent and direct communication style.

Philanthropy

Stewart Butterfield is committed to philanthropy. He has pledged to share a significant portion of his wealth for good causes. He has supported initiatives related to fighting climate change, alleviating poverty, and promoting education.

Career Milestones

2004

Co-founded Flickr

Launched the photo-sharing website Flickr, which revolutionized online photo sharing.

2005

Flickr Acquired by Yahoo!

Flickr was acquired by Yahoo! for a reported $20 million, and Butterfield became General Manager.

2009

Co-founded Tiny Speck

Founded Tiny Speck, which led to the development of Slack.

2013

Launched Slack

Released Slack, a team communication tool, which quickly gained popularity.

2015

Slack Achieved Unicorn Status

Slack reached a valuation exceeding $1 billion.

2021

Slack Acquired by Salesforce

Salesforce acquired Slack for $27.7 billion.

2022

Departed Salesforce

Butterfield stepped down as CEO of Slack and left Salesforce.

Philanthropy & Social Impact

Environmental

Fighting Climate Change

Unknown

Supports efforts to combat climate change

Social

Poverty Alleviation

Unknown

Supports initiatives to help those in poverty

Education

Promoting Education

Unknown

Supports educational causes

Business Philosophy & Leadership

Notable Quotes

"It's very difficult to design something for someone if you have no empathy."

"There's a lot of automation that can happen that isn't a replacement of humans but of mind-numbing behavior."

Leadership Principles

Empathy

Butterfield emphasizes putting himself in the shoes of his employees to understand their perspectives.

Customer Focus

Prioritizing customer feedback to create products people enjoy.

Embrace Failure

View failure as a learning opportunity to pivot and find success.

Transparency

Be honest and transparent with employees.