Sean Duffy is an angel investor and operator angel based in San Francisco, California, United States. The known portfolio is one company, Big Health.
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Investment focus
- Stage
- Seed
- Sector
- AIConsumerHealthcare
- Focus
- Behavioural ScienceBiotechChronic Disease PreventionDiabetesDigital HealthDigital TherapeuticsMedication AdherenceTelehealth
Contacts
Sean Duffy portfolio company (1)
- Big Health
Investor Profile
The listing covers sectors AI, Consumer and Healthcare, and focus areas Behavioural Science, Biotech, Chronic Disease Prevention and Diabetes. Startups operating in these areas may find Sean Duffy relevant.
Sean Duffy is listed for Seed rounds in the database.
The portfolio and focus above give founders context on whether Sean Duffy matches their raise.
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Frequently asked questions
Who is Sean Duffy?
Sean Duffy is an angel investor and operator angel based in San Francisco, California, United States with one known investment on file, Big Health. The sections above list the sectors and stages attached to that record.
What does Sean Duffy invest in?
Listed sectors include AI, Consumer and Healthcare; listed focus areas include Behavioural Science, Biotech, Chronic Disease Prevention and Diabetes. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Sean Duffy invest at?
The database lists Sean Duffy for Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
How do I contact Sean Duffy?
An email address, a phone number and a LinkedIn page are on file for Sean Duffy. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 6 September 2026 · How this data is built · Report a correction or request removal