Sam Feinburg is an Investor at Helena, whose known portfolio counts 11 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Investor at Helena, whose known portfolio counts 11 companies
- Positron
- Aether Diamonds
- Matter
- Lykos Therapeutics
- Phaidra
- Twin Health
- Cruz Foam
- OCEANIX
- Commonwealth Fusion
- The Consilience Project
- Universal Digital
Investor Profile
Sam Feinburg is listed against sectors AI, Climate, Hardware and Healthcare, and focus areas AI Applications, Alt Materials, Automotive and Biotech in the database.
Stage-wise, the deals at Helena cluster around Growth, Late-Stage and Seed rounds.
What the affiliated firm has backed is the closest available signal on whether Sam Feinburg is worth approaching.
Colleagues at Helena
Frequently asked questions
Who is Sam Feinburg?
Sam Feinburg is a family office investor and syndicate member based in Los Angeles, California, United States, listed as Investor at Helena. The known portfolio of that firm counts 11 companies. That portfolio belongs to the firm, not to Sam Feinburg personally.
What does Sam Feinburg invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include AI Applications, Alt Materials, Automotive and Biotech. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Sam Feinburg invest at?
Helena appears in Growth, Late-Stage and Seed rounds across its known deals, and Sam Feinburg is listed there as Investor. 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 Sam Feinburg listed at?
Sam Feinburg is listed as Investor at Helena. 2 other people in the database share a firm with Sam Feinburg.
How do I contact Sam Feinburg?
A LinkedIn page is on file for Sam Feinburg. It is readable inside RaiseHunt after you create an account. The database holds no email address and 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