Jonathan Rothberg

Investor profile

Jonathan Rothberg

Angel, Operator angel & Founder and Chairman at 4catalyzer

Miami·Florida·United States1known investment

Jonathan Rothberg is an angel investor and operator angel based in Miami, Florida, United States. The known portfolio is one company, Butterfly Network.

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Investment focus

Stage
Seed

Contacts

joi***@***.comLinkedIn profile on fileAvailable after registration.
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Jonathan Rothberg portfolio company (1)

  • Butterfly Network

Affiliated funds' portfolios

Founder and Chairman at 4catalyzer, whose known portfolio counts 4 companies

  • Hyperfine
  • Butterfly Network
  • Quantum SI
  • OrphAI Therapeutics

Investor Profile

The listing covers sectors Hardware and Healthcare, and focus areas Biotech, Biotech Accelerator, Digital Health and MedTech. Startups operating in these areas may find Jonathan Rothberg relevant.

The stage tag on this profile is Seed.

The portfolio and focus above give founders context on whether Jonathan Rothberg matches their raise.

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Frequently asked questions

Who is Jonathan Rothberg?

Jonathan Rothberg is an angel investor and operator angel based in Miami, Florida, United States with one known investment on file, Butterfly Network. The sections above list the sectors, stages and firms attached to that record.

What does Jonathan Rothberg invest in?

Listed sectors include Hardware and Healthcare; listed focus areas include Biotech, Biotech Accelerator, Digital Health and MedTech. 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 Jonathan Rothberg invest at?

The database lists Jonathan Rothberg 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.

Which firm is Jonathan Rothberg listed at?

Jonathan Rothberg is listed as Founder and Chairman at 4catalyzer, whose known portfolio counts 4 companies.

How do I contact Jonathan Rothberg?

An email address and a LinkedIn page are on file for Jonathan Rothberg. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.

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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal