Robert Stein is an angel investor based in New York, United States with 9 known investments: PolyPid, Immunogenesis, Flame Biosciences, Isosceles Pharmaceuticals, Inc., Merck Sharp & Dohme, MiroBio Ltd, Protagenic Therapeutics (PTIX), Taro Pharmaceutical Industries and Washington University Saint Louis School of Medicine.
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Investment focus
- Stage
- Series B
- Sector
- Healthcare
- Focus
- BiotechCellular TherapyDrug DiscoveryEHRImmunotherapyPharmaceuticalsPrecision Medicine
Contacts
Robert Stein portfolio companies (9)
- PolyPid
- Immunogenesis
- Flame Biosciences
- Isosceles Pharmaceuticals, Inc.
- Merck Sharp & Dohme
- MiroBio Ltd
- Protagenic Therapeutics (PTIX)
- Taro Pharmaceutical Industries
- Washington University Saint Louis School of Medicine
Investor Profile
The known portfolio sits in sector Healthcare, and focus areas Biotech, Cellular Therapy, Drug Discovery and EHR.
Robert Stein appears in Series B rounds across the known deals.
The portfolio and focus above give founders context on whether Robert Stein matches their raise.
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Frequently asked questions
Who is Robert Stein?
Robert Stein is an angel investor based in New York, United States with 9 known investments on file, among them PolyPid, Immunogenesis and Flame Biosciences. The sections above list the sectors and stages attached to that record.
What does Robert Stein invest in?
Listed sectors include Healthcare; listed focus areas include Biotech, Cellular Therapy, Drug Discovery and EHR. 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 Robert Stein invest at?
The known deals of Robert Stein include Series B 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 Robert Stein?
An email address, a phone number and a LinkedIn page are on file for Robert Stein. 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 5 September 2026 · How this data is built · Report a correction or request removal