Bob Rosin is a Partner at Defy.vc, an early-stage venture capital firm with $400M under management focused on emerging. See sector focus and contact routes.
Bob Rosin is a Partner at Defy.vc, an early-stage venture capital firm with $400M under management focused on emerging technology businesses, where he has served since August 2020. His investment thesis targets pre-seed through Series A companies in SaaS, sales and CRM, security, cloud infrastructure, and consumer internet, primarily within the United States. Typical check sizes range from $3 million to $10 million, though his specific lead or follow behavior is not explicitly documented. Notable portfolio companies include Stripe, which became a unicorn, as well as Tenor (acquired by Google), MindMeld (acquired by Cisco), and Cursor Data. Rosin distinguishes himself through extensive operating experience as a former VP of Business Development at LinkedIn, Head of Partnerships at Stripe, and VP at Microsoft/Skype, having also founded three startups that raised over $130M. He currently serves as Managing Partner at Antler US, focusing on pre-seed investments and co-founder matching after leaving Defy.vc in 2025.
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