Investor profile
David Langer
Angel, Operator angel & Founder & Managing Partner at Lionheart Ventures
An angel investor and operator angel based in San Francisco, California, United States, David Langer has 12 known investments: Calm, Groww, Hint Health, Aspire, CareRev, Pelago, BibliU, Quit Genius, Zamna, museai, Josi Health and Lucid Computing.
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Investment focus
- Stage
- Seed
- Sector
- AIFinTechHealthcareSaaS
Contacts
David Langer portfolio companies (12)
- Calm
- Groww
- Hint Health
- Aspire
- CareRev
- Pelago
- BibliU
- Quit Genius
- Zamna
- museai
- Josi Health
- Lucid Computing
Affiliated funds' portfolios
Founder & Managing Partner at Lionheart Ventures, whose known portfolio counts 11 companies
- Calm
- Breathwrk
- Trek Health
- Xylo Bio
- Homecoming
- Clerkenwell Health
- Momentu
- Piramidal
- WellSet
- Carbon Crusher
- Cognigenics
Investor Profile
Founders in the listed sectors AI, FinTech, Healthcare and SaaS, and focus areas Biotech, Developer Tools, Digital Health 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.
Colleagues at Lionheart Ventures
Brandon Goldman
Partner
Los Angeles, United States
Chris Ingham Brooke
Investor
Nosara, Costa Rica
Conor B. Murphy
Founding Limited Partner and Scientific Advisor
San Francisco, United States
Milan Griffes
Principal
Berkeley, United States
Shelby Clark
Partner
Costa Rica
Catherine Elyssa Brown
Chief Executive Officer
Naples, United States
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Frequently asked questions
Who is David Langer?
David Langer is an angel investor and operator angel based in San Francisco, California, United States with 12 known investments on file, among them Calm, Groww and Hint Health. The sections above list the sectors, stages and firms attached to that record.
What does David Langer invest in?
Listed sectors include AI, FinTech, Healthcare and SaaS; listed focus areas include Biotech, Developer Tools, Digital Health 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 David Langer invest at?
The known deals of David Langer 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 David Langer listed at?
David Langer is listed as Founder & Managing Partner at Lionheart Ventures. 6 other people in the database share a firm with David Langer.
How do I contact David Langer?
An email address, a phone number and a LinkedIn page are on file for David Langer. 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