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Investor profile

Rich Aldrich

Angel, Operator angel & Venture Partner at Longwood Fund

Key Biscayne·Florida·United States8known investments

An angel investor and operator angel based in Key Biscayne, Florida, United States, Rich Aldrich has 8 known investments: Grail, Fundamental Research Labs, Bicycle Therapeutics, TScan Therapeutics, Verastem Oncology, ArcherDX, Lassen Therapeutics and Mitobridge.

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Investment focus

Contacts

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Rich Aldrich portfolio companies (8)

  • Grail
  • Fundamental Research Labs
  • Bicycle Therapeutics
  • TScan Therapeutics
  • Verastem Oncology
  • ArcherDX
  • Lassen Therapeutics
  • Mitobridge

Affiliated funds' portfolios

Venture Partner at Longwood Fund, whose known portfolio counts 10 companies

  • Avenzo Therapeutics
  • Solu Therapeutics
  • AAVantgarde Bio
  • Crystalys Therapeutics
  • Be Biopharma
  • Sidewinder Therapeutics
  • Coultreon Biopharma
  • Mediar Therapeutics
  • Neomorph
  • Newleos Therapeutics

Investor Profile

Founders in the listed sector Healthcare, and focus areas Biotech, Drug Development, Drug Discovery and Gene Therapy will recognize the pattern in this portfolio.

Stage-wise, the known deals cluster around Pre-Seed and Seed rounds.

The portfolio and focus above give founders context on whether Rich Aldrich matches their raise.

Colleagues at Longwood Fund

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Frequently asked questions

Who is Rich Aldrich?

Rich Aldrich is an angel investor and operator angel based in Key Biscayne, Florida, United States with 8 known investments on file, among them Grail, Fundamental Research Labs and Bicycle Therapeutics. The sections above list the sectors, stages and firms attached to that record.

What does Rich Aldrich invest in?

Listed sectors include Healthcare; listed focus areas include Biotech, Drug Development, Drug Discovery and Gene Therapy. 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 Rich Aldrich invest at?

The known deals of Rich Aldrich include Pre-Seed and 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.

Which firm is Rich Aldrich listed at?

Rich Aldrich is listed as Venture Partner at Longwood Fund. 6 other people in the database share a firm with Rich Aldrich.

How do I contact Rich Aldrich?

An email address, a phone number and a LinkedIn page are on file for Rich Aldrich. 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