Stanford Sigma Nu Startup Tracker

Companies founded and led by members of the Stanford chapter of Sigma Nu - from Instagram and Change.org to today’s stealth startups. Search, filter, and explore.

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About the data. Compiled from the Stanford Sigma Nu alumni roster (members listing a Founder / Co-Founder / CEO role) plus three current-student ventures (Travo, Semble AI, Paratus Health). Company details were researched from public sources. Figures marked with an asterisk (*) are estimated or unverified - funding, stage, and status for smaller/stealth companies may be approximate. Class year reflects Sigma Nu initiation year, not graduation.

Built as a static site - last compiled July 2026. Verify any figure before relying on it.