What does Stewart Butterfield invest in?

We have not verified a stated sector or stage focus for Stewart Butterfield (San Francisco, California, United States). The profile lists the organization, location and investors we track alongside them.

How do I contact Stewart Butterfield?

Stewart Butterfield's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.

Where is Stewart Butterfield based?

Stewart Butterfield is based in San Francisco, California, United States.

Stewart Butterfield — Investor Profile, Portfolio & Contact

About Stewart Butterfield

Stewart Butterfield is a Canadian entrepreneur and angel investor best known as the co-founder and former CEO of Slack, with a background that includes creating Flickr and holding advanced degrees in philosophy from Cambridge University. His investment thesis concentrates on early-stage companies in collaboration tools, developer infrastructure, and workplace technology, reflecting his own expertise in how teams communicate. He typically invests as an angel or through small syndicates, favoring founders with strong product quality and those who have learned from prior failures. Notable portfolio companies include Netlify, Carta, and Viktor, an enterprise AI firm where he holds a significant Series A exposure. Butterfield does not seek to build a personal investor brand, instead quietly backing founders who demonstrate genuine pattern recognition in their domains. His distinctive point of view emphasizes that distribution is as critical as product and that second-time founders often outperform first-timers due to their resilience.

Stewart Butterfield at a glance

Location: San Francisco, California, United States
Investor type: Individual/Angel
Portfolio companies listed: 29
Investments recorded: 31

Frequently asked about Stewart Butterfield

What does Stewart Butterfield invest in?: We have not verified a stated sector or stage focus for Stewart Butterfield (San Francisco, California, United States). The profile lists the organization, location and investors we track alongside them.
How do I contact Stewart Butterfield?: Stewart Butterfield's published profile links (website, LinkedIn or X where available) are listed on the StartupFundraising.com investor profile.
Where is Stewart Butterfield based?: Stewart Butterfield is based in San Francisco, California, United States.

This profile is part of the StartupFundraising investor database: focus, portfolio history, disclosed location and contact routes, refreshed as new filings and rounds are ingested. Founders use it to check fit before reaching out and to find investors in San Francisco.

Stewart Butterfield

About Stewart Butterfield

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