Karl Handelsman is an angel investor and operator angel based in San Francisco, California, United States with 5 known investments: Zymergen, Caribou Biosciences, Clear Labs, Millennium Pharmaceuticals and RiffRaff.
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Investment focus
- Stage
- Seed
Contacts
Karl Handelsman portfolio companies (5)
- Zymergen
- Caribou Biosciences
- Clear Labs
- Millennium Pharmaceuticals
- RiffRaff
Affiliated funds' portfolios
Founder & Managing Partner at Codon Capital, whose known portfolio counts 8 companies
- Pivot Bio
- Zag Bio
- EpiBiologics
- Ansa Biotechnologies
- AIRNA
- Seismic Therapeutic
- Good Therapeutics
- Bonum Therapeutics
Investor Profile
Founders in the listed sectors Agriculture, Climate and Healthcare, and focus areas Biotech, Digital Health, Drug Discovery and EHR will recognize the pattern in this portfolio.
Stage-wise, the known deals cluster around Seed rounds.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is Karl Handelsman?
Karl Handelsman is an angel investor and operator angel based in San Francisco, California, United States with 5 known investments on file, among them Zymergen, Caribou Biosciences and Clear Labs. The sections above list the sectors, stages and firms attached to that record.
What does Karl Handelsman invest in?
Listed sectors include Agriculture, Climate and Healthcare; listed focus areas include Biotech, Digital Health, 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 Karl Handelsman invest at?
The known deals of Karl Handelsman include 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 Karl Handelsman listed at?
Karl Handelsman is listed as Founder & Managing Partner at Codon Capital, whose known portfolio counts 8 companies.
How do I contact Karl Handelsman?
An email address, a phone number and a LinkedIn page are on file for Karl Handelsman. 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