Seth Rosenberg
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Seth Rosenberg is a partner at Greylock, where he focuses on early-stage founders in fintech and artificial intelligence. He grew up in Winnipeg, Canada, spent summers starting businesses, and during college decided that software was the entrepreneurial opportunity for his generation. He then joined Facebook as a product manager, where he helped spin off Messenger as a standalone app and launch the AI bot platform before moving to Greylock. He is known for backing founders from non-traditional backgrounds and for his work with AI-focused companies such as Tome.
Updated 4 September 2026
Public sources: greylock.com
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