photo-sharing
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Nathan Sharp
Nathan Sharp is the Co-Founder and CEO of Retro, a friends-only photo journal app built on the belief that social media can be better - more intimate, more honest, more for the people you actually care about. A Harvard grad and Dartmouth Tuck MBA, Sharp spent six years at Meta where he helped launch Instagram Stories in 2016 before leaving to build Retro with his co-founder Ryan Olson. Backed by Thrive Capital, Dylan Field, and a constellation of top-tier VCs, Retro hit #1 photo app in Canada and broke into the US top charts in 2025, proving that people still want a social app that actually feels like talking to friends.
Stewart Butterfield
Stewart Butterfield is a Canadian technology entrepreneur and angel investor who co-founded Flickr (2004) and Slack (2013) — two landmark products that emerged as accidental pivots from failed multiplayer games. A self-taught coder with a Cambridge philosophy degree, Butterfield sold Flickr to Yahoo for ~$25 million in 2005 and Slack to Salesforce for $27.7 billion in 2021. His 'We Don't Sell Saddles Here' memo became a canonical document in Silicon Valley product thinking. Since departing Slack in January 2023, he has been active as an angel investor with 32+ portfolio companies.